Polyurethane foam with flame retardant

Polyurethane foam with flame retardant

The additive type flame retardant of polyurethane foam is dispersed in the polyurethane matrix in the physical way, and no chemical reaction between the polyurethane matrix and its reaction material is produced. Additive type flame retardant is a kind of polyurethane foam fire retardant, which has liquid and solid flame retardant.

The stability of liquid flame retardants in polyurethane foam was reduced with time. However, the selection range is wide and easy to use. The polyurethane foam has a relatively small effect on polyurethane and is relatively economical and simple in process. Therefore, it is still an important flame retardant.

The inorganic flame retardants of polyurethane foam are generally filled with inorganic compounds into polyurethane matrix, which are decomposed after heat and absorb a large amount of heat, thus achieving the flame retardant purpose. The advantages of inorganic additive flame retardants are low toxicity, low volatility, good thermal stability, no precipitation, persistent flame retardant effects, low price and low smoke content; The disadvantage is that the amount and particle size of this type of flame retardant can affect the flame retardancy and physical properties of the material, and it can lead to a decrease in the performance and physical properties of the polymer.

This kind of flame retardant is commonly solid, has the strong polarity and hydrophilic, with nonpolar polymer compatibility is poor, with polyurethane matrix interface effect is poorer, difficult to form good combination and adhesive. Some flame retardant if added to the polyurethane matrix directly, will seriously affect the foam flame retardant effect, need for this type of flame retardant for chemical processing, such as surface modification, ultrafine, macromolecular bonding processing, thus to reduce consumption, reduce the amount of smoke and flame retardant foam plastics performance.

Soft polyurethane foam vinegar, referred to as "soft foam polyurethane vinegar or cool polyamine soft foam, is has certain flexibility, resilience, permeability, bubble hole for more open groove, and deformation is reversible and have a cool load resistance of polyurethane foam plastic, it is one of the largest a poly dosage of ammonia in the cool products, mainly used for household mattresses, cushion material, vehicle seat cushion, etc.

Cool rigid polyurethane foam plastics, hereinafter referred to as hard foam polyurethane rigid cool or get together ammoniac cool, is better than high strength, light weight, low thermal conductivity, good effect of heat insulation, sound insulation sex good, bubble hole is close pass more, ability, larger load and the load is too large deformation irreversible polyamine cool foam plastics. Usage of hard foam in polyamine cool product to less than soft foam, but compared with other plastic foam, dosage is bigger, its craft is simple, construction is convenient, and expand the application range of it in construction and insulation industry.



Triphenyl Phosphate (TPP)

Flame retardant tpp This product has good transparency , flexibility and good benefits antimicrobial resistance, with water, oil, electrical insulation and compatibility. Mainly for the cellulose resin, a vinyl resin, natural rubber and synthetic rubber flame retardant plasticizers may also be used for acetate and glycerol triacetate film thin , rigid polyurethane foam , phenolic resin, and engineering plastics such as resistance PPO burning plasticized . Flame Retardant tpp manufacturer price mainly in Jiangsu .

Flame retardant TPP has many advantages, such as excellent transparency, softness, bacterial resistance, and water proof, grease-proof, good electric insulation, as well as good compatibility. Flame retardant TPP is mainly used as the flame-retardant plasticizer for cellulose resin, vinyl resin, natural rubber and synthetic rubber. And it may also be used as the flame-retardant plasticizer for glyceryl triacetate thin ester and film, rigid polyurethane foam, phenolic aldehyde resin, and PPO, etc.

Flame retardant TPP is a kind of halogen-free environment-friendly flame retardant with phosphorus element. Most of the products in the market are self-colored flaky crystal, our product is self-colored crystalline powder, and is more soluble in organic solvents. TPP is not soluble in water, but soluble in benzene, chloroform, ether and acetone, and slightly soluble in Z alcohol. Flame retardant TPP is nonflammable with slight aromatic odor and slight deliquescence. The fusion point is about 50 ℃, and fast melts to hoop-shape when heated. The lubricate effect is excellent, and it is often used as the flame retardant plasticize lubricant. What is more, it is used as the flame retardant for many plastics and resins, such as phenolic aldehyde resin, epoxy resin and so on.


Semi-rigid polyuredofoam plastic, which is between soft bubble and soft bubble, has a good cushioning and good impact resistance. Is mainly used in the buffer material, packaging material, car bumper, floating, dashboard lining core and industrial shock, etc., can also be used from the heat insulation packaging materials, such as thermal insulation fish tank, ice cream cups, etc.

Special polyuream cool foam plastic, which is the performance of the products can meet the special requirements of special conditions, such as ultra-low density, ultra-soft and so on, such a kind of polyuremide foam plastic,

Polyurethane plastics are widely used in all walks of life. It can get a plastic foam, elastomer, coating, fiber, synthetic leather, adhesives, waterproof materials and auxiliary materials, and other products form used in transportation, vehicles, ships, aircraft, road, bridge), construction, machinery, electronics, food processing equipment, furniture, clothing, textile, synthetic leather, printing, mining, petrochemical industry, water conservancy, national defense, sports, and many other fields.

Polyurethane insulation materials have been developed rapidly in the field of construction and civil engineering, and have been applied to the thermal insulation of concrete DAMS in the field of water conservancy and hydropower engineering. Compared with the current polyurethane insulation material, spraying polyurethane hard foam has its own advantages and disadvantages.

Advantages: (1) polyurethane materials and water without any chemical reaction, after water insoluble, corrosion, good durability, also won't fall off, for dam water level changing area is a good thermal insulation moisture materials. (2) the pu material with spray process construction, save work time saving, better comprehensive economic performance, and the spraying process can form a complete whole on surface of the dam, can prevent the infiltration of water outside, at the same time also maintain the internal concrete humidity; (3) the appearance can adjust the color of the polyurethane hard foaming, making the dam more clean and beautiful overall; (4) the polyurethane hard foam has more thermal conductivity than the benzene plate, and its thermal insulation performance is more prominent.

Disadvantages: (1) organic polymer materials generally have flammable molecular structure, and polyurethane is no exception, generally only B2 or B3 grade combustion performance. In the field of water resources and hydropower engineering, no clear requirements on the dam is the fire rating of external thermal insulation of polyurethane materials, but from the perspective of fire safety research fire prevention is the inevitable trend of high performance polyurethane materials; (2) in terms of water conservancy, its intensity is not enough.

Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd 

http://www.yaruichem.com