Fiberglass reinforced nylon and polyester with halogen free flame retardants

Fiberglass reinforced nylon and polyester with halogen free flame retardants

The characteristics, composition, application scope and application of fiberglass reinforced nylon and polyester special halogen flame retardants were introduced. Fiberglass reinforced nylon and polyester are divided into two categories with halogen free flame retardants, the first class is used in fiberglass nylon. The second type is used in fiberglass polyester. The above EPFR series phospho-nitrogen expansive green flame retardant has the advantages of no red phosphorus, low smoke, low toxicity, high efficiency, good compatibility and little influence on the properties of substrate.

With respect to life, more and more responsible manufacturers are choosing halogen free flame retardant materials. The responsible manufacturer needs to reach UL94 - where V0 flame retardant, satisfies the requirement of hot wire, all kinds of superior performance, the price is right of glass fiber reinforced nylon and polyester with halogen free flame retardant and halogen free flame retardant glass fiber reinforced polyester.

The existing problems of flame retardants for fiberglass reinforced nylon and polyester:

1. Halogen flame retardant system. The most important of which is also one of the most widely used abroad is the styrene brominated polymer, it has extremely excellent thermal stability, and because it is melting can be mixed with nylon, therefore in the process of processing has good liquidity. In addition, the flame retardant nylon prepared with it has superior electrical performance and better physical mechanical properties. The limitation of this kind of flame retardant is poor in light stability, and it is not fully compatible with nylon, and its cost is higher than that of ten brominated biphenyls which are widely used in China.

At present, the most widely used flame retardant in China is decabromodiphenyl ether, which is the most economical flame retardant due to its high bromine content and high flame retardant efficiency for nylon. But since it is a type of filler flame retardant, it has a great negative effect on the physical mechanical properties of the processing fluidity and the products. Especially in the increasingly complex products such as electrical connectors, the processing liquidity requirements for resins are also increasing. Illiquid resin can not meet the requirements of processing small and complex parts, so you can imagine such filling type flame retardant applied it in the field of high-end, in addition, the thermal stability and light stability is poor.



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.


In recent years, people have developed in the aspect of nylon and polyester flame retardant used a new flame retardants for 10 bromine diphenyl oxide, with ten bromine biphenyl ether with the same efficiency of bromine content and the same high flame retardant, in addition, it also has good thermal stability and light stability. Its limitation is that it is similar to the same type of packing type flame retardant as decabromoether, which is poor in compatibility with the polymer, so the physical mechanical properties of the processed fluidity and products are poor.

2. No halogen flame retardant system. Red phosphorus is one of the most widely used non-halogen flame retardants in nylon and polyester. It has the advantages of little addition and wide use. Ordinary red phosphorus is easy to absorb moisture and poor compatibility with high polymer materials, which can cause spontaneous combustion and can not be used in practice. Microencapsulated red phosphorus flame retardant, reduced the activity of red phosphorus, solved the compatibility, red phosphorus content was around 85%, but the spontaneous combustion problem was not effectively solved, and the dust pollution was serious.

The red phosphorus is a dark red particle which is used by the inorganic flame retardants, such as the red phosphorus and aluminum hydroxide and the expanded graphite, and the safety problems are solved.

The flame retardant system is low in smoke and flame retardant efficiency; No dust pollution, excellent processing performance; Low density, good thermal stability, less physical properties of products; No frost, no migration, no corrosion of molds during processing. In particular, the products have high resistance to leakage index (CTI), which has obvious advantages in electronic appliance application. The main disadvantage of red phosphorus is the color problem, which can not be given more color choice except dark red and black.

Ammonium polyphosphate (APP) with high phosphorus content, the characteristic such as adding quantity is little, also be used for the preparation of flame retardant nylon and polyester, but the main drawback of the APP is strong moisture absorption, low thermal stability of NH3 process (at 230 ℃ has occurred), in the process of nylon and polyester easy decomposition, lead to products foaming discoloration.

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