Polyurethane Spraying Technology For Interior And Exterior Walls

 Polyurethane spraying is a high-pressure polyurethane spraying equipment. Because the material of the high-pressure polyurethane spraying equipment hits at high speed and rotates violently in the mixing chamber with a small space, the mixing is very abundant. The high-speed moving material forms fine mist droplets at the nozzle of the spray gun, and sprays them evenly onto the surface of the object.

It should be noted that polyurethane can be divided into hard foam and soft foam. Hard foam is generally used for wall insulation, and soft foam is more used for filling. For example, the commonly used beautifying agent in life is soft foam.

Due to the simple molding process and remarkable thermal insulation effect, polyurethane spraying is widely used in building roof and wall insulation. It has been popular in developed countries for more than 40 years. Some countries even adopt legislation or establish standards to encourage the development of polyurethane spraying.

How to do polyurethane spraying for interior wall insulation?

For general houses, the common practice of polyurethane spraying is to set the keel on the wall, and spray it evenly on the wall with the polyurethane foaming agent prepared on site.

After waiting for it to foam completely, use a special tool to sand it flat, and finally fix the decorative panel on the keel.

What are the advantages of polyurethane spraying?

1. Better insulation effect

Compared with traditional thermal insulation materials such as extruded board and polystyrene board, polyurethane has better thermal insulation performance. In the southern region, only a thickness of 5cm is needed to meet the wall heat transfer requirements of ultra-low energy consumption buildings.

2. High bonding strength

Polyurethane itself has a certain viscosity, and after foaming, it can be stably bonded to the wall surface, and the insulation material will not fall off in the later use.

3. Short construction period

The construction efficiency is high. Generally, the construction can be completed in one day, and the next decoration process can be entered after 24 hours of polyurethane spraying.

What are the disadvantages of polyurethane spraying?

1. High cost

Polyurethane rigid foam of the same thickness is more than three times more expensive than extruded board. Due to price factors, it is generally only used in certain high-end projects.

2. Restricted by the external environment

Polyurethane foaming on site has certain requirements for the temperature and humidity of the environment. Generally, the construction temperature should not be lower than 10°C, and the relative humidity should be less than 80%. It cannot be constructed in rainy days.

Application of polyurethane spraying in HVAC industry

After the introduction of polyurethane spraying into China, it is widely used in all walks of life.

Due to its high price, the application of polyurethane spraying in the HVAC industry is mainly concentrated in cold storage, refrigerated trucks and other fields with relatively high insulation requirements.

By the way, YG also provides other spraying machines such as mortar spraying machine, shotcrete spraying machine, GRC spraying machine ,gypsum spray machine,and other equipment.

In addition, some high-end real estate projects may use polyurethane spraying for wall insulation for the purpose of applying for national certification subsidies such as ultra-low energy buildings.

It is very rare for general owners to directly use polyurethane spraying for interior wall insulation at home.

in conclusion

For ordinary residences, using extruded boards for interior wall insulation is very cost-effective; and if you are relatively less concerned about cost, then polyurethane spraying is indeed a better solution.

It is recommended that you choose which solution to use according to your actual situation.

How to use the soil spraying machine to green the slope?

With the vigorous development of infrastructure, many slopes are exposed. Exposed slopes are not only unsightly, but can also be dangerous. Therefore, it is imperative to green the slope to improve the environment and soil quality of the slope. The most important equipment for greening the slope is the Hydromulching Machine. The foreign soil seeding machine is first to mix the soil, adhesive, grass seeds and other materials for spraying evenly, and then spray the soil spraying machine to the slope.

 

Steps for greening slope with soil sprayer:

 

1. Before spraying, we need to clean the slope surface first, and smooth the gravel, pumice, dangerous rock, etc. on the slope. Unevenness will cause trouble for bolting and hanging nets.​

2. The next step is to hit the anchor rod, the main function is to fix the slope and facilitate the hanging of the net. Hanging beams with too steep slopes.

3. Hang the net. To build a drainage ditch at the top of the slope, it is best to press the net under the drainage ditch to prevent landslides and theft; the overlap between the net and the net pressure is 1-2 cm and fixed with U-shaped nails or iron wires;

4. Use a soil sprayer to spray the mixed material onto the slope. The spraying should be done as far as possible from top to bottom and left to right, avoiding overhead spraying.

5. After spraying, use non-woven fabric to cover the slope from top to bottom to facilitate moisturizing and prevent erosion.

6. After spraying, maintenance and management should be carried out regularly. The main work is water spraying and irrigation.

7. 10 to 20 days after spraying, the non-woven fabric will be uncovered after plants grow on the slope.

 

Features of soil sprayer:

The soil sprayer is a special equipment for seed soaking, germination and sprinkler irrigation, which is a special equipment for mixing and spraying various types of grass seeds, flowers, crop seeds, etc., with water as the carrier and diesel internal combustion engine as the power.

In addition to stirring liquids and semi-fluids, the equipment can also spray all kinds of fertilizers, so the equipment can also be used for spraying special equipment.

The soil seeding machine has small mobile and large vehicle-mounted seeding machines to meet the needs of customers with different engineering quantities.

The equipment adopts the original Changchai engine, which is well-made, easy to operate and has the characteristics of good mobility.

The machine is equipped with a fully functional operation panel, and the non-slip work platform has a detachable 1250px height with a closed guardrail to ensure the safety of the console and the gun operator and other staff.

Spraying Process Of GRC Cement Components

 GRG material is a new type of decorative material. It not only has the advantages of waterproof performance, green environmental protection performance, and good ornamental performance, but also has excellent impact resistance, sound, and light performance. , the randomness of its shape is more followed by the architects, let's take a look at the GRC spray machine

 

Introduction to the spraying process of GRC cement components

 

According to the thickness of the GRC material and different surface treatment methods, good sound insulation and sound absorption effects can be achieved. In addition, its lightweight and high strength make it more resistant to the shock of earthquakes than other materials.

GRC architectural detail decoration components are often called GRC components because the name is too long to remember. Due to the popular custom in Europe in recent years, it is often called GRC Roman columns, GRC European components, GRC cornice lines, GRC decorative lines, GRC molding lines, GRC door and window covers, GRC vase railings, etc.

The non-load-bearing GRC Roman column installation method is the same as pouring concrete from the upper opening after installation. The difference is that load-bearing GRC Roman columns should be installed first and then covered, otherwise concrete cannot be poured, while non-load-bearing GRC Roman columns can be decorated with buildings first, and then decorated with GRC Roman columns. 

After the GRC components are installed, they are protected with waterproof paint or paint, mainly to prevent internal moisture from evaporating. On the other hand, it is necessary to avoid contact with the air, which will cause the internal steel bars to corrode and lose their function; of course, this coating will be weathered off after a period of time, so it needs to be reused.

YG also provides spraying equipment such as mortar spraying machine and shotcrete machine.

In which fields is GRC applied?

Customers who are not familiar with this industry have such questions. At present, GRC components have the characteristics of corrosion, fire prevention, high-temperature resistance, crack resistance, and low permeability. Therefore, it is widely used in construction, docks, tunnels and other industries. The installation method of non-load-bearing GRC Roman columns is the same as pouring concrete from the upper opening after installation. The difference is that load-bearing GRC Roman columns should be installed first and then covered, otherwise concrete cannot be poured, while non-load-bearing GRC Roman columns can be decorated with buildings first, and then decorated with GRC Roman columns.

The GRC industry chain is mainly composed of raw material suppliers, GRC product uses consulting and effect designers, GRC product design, production and sales, GRC product installation and construction manufacturers, and end users who take personalized GRC product demand as the terminal. The GRC industrial value chain is the structural form of value organization and creation behind the industrial chain. It represents the value attribute of the industrial chain and reflects the transfer and creation of value. 

Clean regularly. After a period of use, a lot of stains will appear on the surface of the GRC. We can use a high-pressure water gun below 80 for cleaning, but the strength should not be too high, otherwise, it will damage the parts. Special attention should be paid to this cleaning, which needs to be carried out regularly.

 

In which fields is GRC applied?

 

No matter it is night or day, the magnificent atmosphere of the GRC Roman column emerges spontaneously. Whether it is a city villa or a country villa, the European-style architecture decorated with GRC Roman columns gives people a sense of grandeur and solemnity.

 

What are the areas where GRC is applied? Let’s share it here. GRC materials are light, high-strength, high-toughness and water-resistant, non-combustible, sound-proof, heat-insulating, and easy to process, so I believe it will be more and more widely used.

What is the use of road shot blasting machine?

The road shot blasting machine is a machine that uses high-speed rotating grinding wheels to throw gravel, gravel, leaves, and other materials onto the road surface. This machine not only cleans the road, but also gives it a new look.

 

History of road shot blasting machine

 

Road shot blasting machine is a kind of mechanical equipment used to project high-pressure water flow to clean the road surface. It is usually towed by a car and has one or more barrels for spraying high-pressure water forward. The floor shot blaster widely used to remove dirt, obstacles, snow and frost, etc.

 

The role of road shot blasting machine

 

The road surface shot blasting machine is a machine specially used to clean the road surface, which can effectively remove the dirt, dust and sundries on the road surface, and make the road look brand new. In addition to cleaning the road, the shot blasting machine can also help protect the road surface from wear and tear.

 

The structure of road shot blasting machine

 

The structure of the road shot blasting machine includes the main body of the shot blasting machine, the shot blasting tank, the shot blasting pump and the control system. The main body of the shot blasting machine is the main part of the shot blasting machine, which consists of a shot blasting nozzle, a dust cover, an oil cylinder, a shot blasting cone, a shot blasting wheel and a driving wheel. The shot blasting tank is the storage container of the shot blasting machine, and the shot blasting pump is a pump that presses the shot blasting agent from the storage tank into the shot blasting cone. The control system controls the injection of the shot blasting agent by controlling the opening and closing of the shot blasting nozzle.

 

 

efficiency and cost

 

The road surface shot blasting machine is an efficient tool for cleaning the road surface. It can quickly and effectively remove dirt, oil stains and snowflakes from the road. The use of road surface shot blasting machines can help keep roads clean and clean, and can significantly reduce the cost of road cleaning.

 

 

Working principle of road surface shot blasting:

 

The impeller driven by the shot blasting motor generates wind force and centrifugal force during high-speed rotation, and the amount of shot blasting up to 200kg/min enters the high-speed rotating sub-grinding wheel. Driven by the centrifugal force, the projectiles are directly thrown from the sub-grinding wheel into the directional sleeve, and then passed through The directional sleeve (controlling the foaming direction of the sand material) is thrown out, picked up by the high-speed rotating blade, and continuously accelerated and thrown along the length and direction of the blade. The thrown projectile will form a certain fan-shaped stream, which will be The speed of 120m/s is thrown onto the road surface or the surface of the steel plate. The depth is also determined according to the type of abrasive, which can reach 1-5mm. The unevenness is 100% uniform. The throwing will clean and strengthen the surface. Dust, impurities.

 

The appearance of the road shot blasting machine has brought a new look to the road and also brought convenience to the traffic. The widespread use of road shot blasting machines is expected to improve the safety of road traffic.

 

Other Road Processing Machines

 

YG construction machinery manufacturer focuses on construction machinery production, research and development, manufacturing for more than 20 years, we provide a variety of road maintenance and treatment equipment. For example, road marking machine, thermoplastic road marking machine, crack sealing machine, Asphalt Coring Machine, Slipform Curb Machine, ect.

 

 

Asphalt road sealant of modified asphalt material

 Asphalt pavement cracks are a common disease on the road surface. If the cracks are not treated in time, the rainwater will enter the surface layer and the base layer through the cracks, and under the action of the traffic load, dynamic water will be formed to scour the structural layer, resulting in pumping or loose base layers. Such as water damage, resulting in cracks, potholes and other diseases on the road surface.

 

When cracks appear on the asphalt pavement, when they are first discovered, they should be dealt with in time to prevent problems before they happen. The use of asphalt road sealant to fill joints is an effective way to deal with cracks in asphalt pavement. It is recommended that road workers take measures as soon as possible. Next, we will introduce the joint filling characteristics of asphalt road sealant, performance characteristics of asphalt road sealant and construction attention points.

 

1. Filling characteristics of asphalt road sealant

 

After the cracks are slotted and before the joint glue is injected, the slot joints must be cleaned up to prevent the asphalt road sealant from being glued to the road surface and causing the glue to open or fall off. Use a high-pressure dust blower to remove the ash, Blow the soil to ensure that the asphalt road sealant is in full contact with the road surface and increase the adhesion, so that the filling effect is good, and it can be full, smooth, clean and beautiful.

 

The joint filling is basically not affected by the temperature during the construction period, and it can also be constructed at low temperature; the construction method is simple, easy to operate and master; the asphalt road sealant has better quality than hot asphalt filling joints, and has a long service life. Using this crack sealing machine and process for joint filling Once, the pavement can be maintained for more than two years without refilling. Compared with traditional hot asphalt manual filling once a year, the overall cost is reduced.

 

With better joint filling experience in future work, the use of asphalt road sealant to fill joints on asphalt concrete pavement has certain advantages not only in joint filling quality, service life, maintenance costs, etc., but also in daily highways. It has a good prospect of popularization and application in maintenance.

 

polyurethane road sealant

YG road sealant in polyurethane

 

2. Material characteristics of asphalt road sealant

 

1) Water resistance. Asphalt road sealant itself is insoluble in water, does not absorb water, and can prevent water from penetrating from top to bottom;

 

2) Adhesiveness. Asphalt road sealant has strong adhesion to the road surface, and when the road surface is cold or thermally expanded, it can still be firmly bonded with it, and the adhesive surface will not be glued when it encounters water;

 

3) Elastoplasticity. Asphalt road sealant has good elasticity, and its stretching capacity meets the deformation requirements of cracks and joints, and can expand and contract with the pavement layer to ensure that it will not be broken;

 

4) High temperature stability. Asphalt road sealant will not flow due to heat in summer, pollute the road surface, affect the driving of vehicles, and can maintain a certain degree of toughness;

 

5) Low temperature flexibility. Asphalt road sealant does not harden or brittle at low temperature in winter, and maintains a certain degree of flexibility;

 

6) Anti-embedding. Asphalt road sealant can resist the embedding of sand and gravel debris under driving conditions, and ensure that the expansion and contraction of pavement joints is not hindered

 

7) Hot melt. Asphalt road sealant is a hot-melt material that can be heated repeatedly during use. The remaining materials in the joint filling equipment do not need to be cleaned, and can continue to be used after heating.

 

3. Points for attention in the construction of asphalt road sealant

 

1) Construction temperature

 

The construction temperature is one of the reasons for the peeling off of the sealant. If the road surface is wet and the temperature is lower than 4°C, the cohesive force of the asphalt road sealant will be reduced and it will fall off easily.

 

The overall temperature of the road surface is low. After the sealant is filled, the temperature drops rapidly, and the asphalt road sealant shrinks significantly. The temperature stress between the asphalt road sealant and the groove wall is relatively large, which will reduce the adhesion between the asphalt road sealant and the road surface. .

 

2) Crack humidity

 

The road surface should be dry when filling joints. If it is wet, the adhesion between the asphalt road sealant and the road surface will be reduced, causing part of the asphalt road sealant to fall off.

 

3) Keep it clean

 

Before filling the joints, use an air compressor to remove the dust and debris in the cracks after the slots and the loose objects around them to keep the cracks clean.

 

When cleaning cracks, in order to ensure that the asphalt road sealant and the crack wall are firmly bonded, the compressed air method and the wire brush method are often used to clean the cracks.

 

4) Filling range

 

If the rutting is serious, especially on the pavement with network cracks, it is not suitable to use this method to deal with cracks.

 

5) Filling material

 

The asphalt road sealant should have strong bonding ability with the seam wall, not stick to the wheel at high temperature, not brittle at low temperature, and have good durability.

 

6) Principles to be followed for joint filling

 

Asphalt pavement joint filling construction is to eliminate pavement diseases in the bud and achieve preventive maintenance. According to the long-term work experience, when using the joint filling machine to fill the joints on the asphalt pavement, the principle of filling the joints should be followed, so that every crack should not be missed to ensure the prevention of leakage.

 

When the crack width is more than 1cm, the effect of using asphalt road sealant is better, and when the crack width of asphalt pavement is less than 1cm, especially If the crack is less than 0.5cm, it is better to choose YG asphalt seam tape for seam treatment, because using YG asphalt seam tape for treatment will not cause artificial secondary damage to the asphalt pavement due to slotting, At the same time, it can also achieve the effect of partial micro-crack (healing).

What is concrete curb machine used for?

 Curb stone is a very important road facility, which refers to a stone object located on the edge of the road. The purpose of curbs is to separate roads and sidewalks and to protect structures, drainage systems and power lines below the road surface. In the process of urbanization, with the gradual improvement of traffic construction. The traditional way of operation and processing is realized through manual operation. Bricklayers invest a lot of personnel and have a heavy workload, and they also need to study the technical skills of the operators. Due to the technical level curve of personnel, the products produced are also good and bad, which is time-consuming and labor-intensive. Even the same personnel cannot guarantee that the quality of each processed product is qualified. The application of all synovial machines has gradually replaced manual processing.

What is a curb slipform machine?

 

 

The slipform curb machine is a machine and equipment used to build curbs and shoulders. It is often used in the construction of road curbs. The curb slipform machine can be used to lay curbs efficiently and standardizedly, and complete road construction and other work.

 

Prefabricated curb film machine, as the name implies, is a general term for the mechanical equipment used to construct automatic prefabricated film for curbs. Molding machine, prefabricated curb forming machine, etc. The core technology of this type of equipment is to add raw materials (cement concrete) into the hopper of the equipment, and then carry the corresponding mold according to the predetermined direction to achieve fast and high-quality sliding film operation .

 

Application advantages of curb slipform machine

 

Before the application of the curb slipform machine, the way of road curb construction was artificial prefabrication. The process of this method is relatively complicated. It is necessary to measure the construction mold first, and then carry out material preparation, mixing, mold loading, vibration, demoulding, etc. A series of work processes can prepare the curb stones, and after the curb stones are ready, they need to be installed. The whole process is complicated, lengthy, and consumes manpower and material resources.

 

The curb slipform machine automates this process, using machinery and equipment to complete the entire process of curb construction. There is no need to prefabricate the curb in advance. The machine goes through one molding process, which greatly saves labor costs, transportation costs, and consumable costs, and improves production. efficiency.

 

Working principle of curb slipform machine

 

The working principle of the curb slipform machine is not as complicated as imagined. The construction method is on-site pouring. After we set the relevant parameters of the equipment, the machine will continuously push the cement concrete into the mold and vibrate it through the motor of the equipment. , so that the concrete reaches a dense state, and then the curb slipform machine mold slides over the concrete road to form a strong and seamless curb. The machine equipment can repeat the action and complete the construction of the curb efficiently.

 

Other road construction machine

 

In order to meet the needs of other road construction and maintenance, YG also provides other road machinery. For example, road marking machine, thermoplastic road marking machine, manhole cover cutting machine, Asphalt Coring Machine, Shot Blasting Machine and other equipment. If you want to know more, please contact YG.