replace substitute alternative Sb2O3 antimony trioxide flame retardant synergist

New type inorganic flame retardant synergist RTP-501

Overview: RTP-501 is a new type of superfine powder additive inorganic flame retardant synergist with excellent performance.    It is a mineral powder material that is made of wollastonite 600 meters below ground, through high-tech surface treatment agents and nano-modification technology, and was jointly developed by the R&D team of our company, Tsinghua University and relevant China national academicians.  

Product advantages: 

1. Reduce customer’s production cost.

2. little of non-eco ingredients.

3. Reduction of product density

4. Reduce the amount of titanium dioxide needed for light-colored products.

5. Shorten the process of injection molding.

6. Increase the heat distortion temperature of the final product

Main ingredients: Magnesium Oxide/Silica/etc

Properties: This product is a white powder, whiteness ﹥98%, average particle size 1.1um, loss on ignition ﹤5.  It has the characteristics of high whiteness, high fineness, and high purity.     It has a large specific surface area, and the surface effect and volume effect of ultra-fine particles.  No skin irritation, no ordor, and no corrosion.

Application range：suitable for PA, PBT, PP, PET, ABS, PVC and PC/ABS……

Usage: This product is a new type of superfine additive inorganic flame retardant with excellent performance.

It can be used:

1. in halogen + antimony trioxide flame retardant system,  to replace part of antimony trioxide.

2. in antimony trioxide flame retardant system alone (no halogen flame retardant involved), to replace part of antimony trioxide.

Thermal decomposition temperature of RTP501 is 340°C.

Thanks to its special surface treatment, RTP501 achieves excellent compatibility and adhesion with plastic resins, has a great viscosity reduction effect;

RTP501 has good dipping performance with glass fiber and thus less mixing time ;

Allow good flowability and molding performance of the compound.

When used together with Sb2O3, the dosage of Sb2O3 can be greatly reduced, while

＞90% of the mechanical properties can be maintained.

Thanks to the high whiteness of RTP501, the amount of titanium dioxide (TiO2) needed for the production of white products can also be reduced, thus furtherly help cutting customer’s production cost.

Flame-retardant mechanism: This product can play an acid catalysis effect during the combustion of polymers, making the whole system partially cross-linked and carbonized, thus forming a char protective layer, to prevent the release of volatile decomposition products.  At the same time, RTP-50 can also reduce the decomposition temperature of antimony oxyhalide generated during the reaction between halogen flame retardants and Sb2O3, so as to achieve the purpose of assisting flame retardancy.

Features:

1. Excellent high-temperature resistance and thermal stability. TGA is only 0.5‰wt within 400℃.

2. Good compatibility with modified plastic products such as PA, PBT, PP, PET, ABS, PVC and PC+ABS alloy, therefore the mechanical properties of the final products can be well maintained.

3. RTP501 can replace Sb2O3 by 40%～60%wt, and at the same time no influence to the flame retardant performance.     Thus saving much production costs.

4. With no more than 3% addition of RTP501, flowability of the plastic compound can can be significantly improved, thereby improving the dimensional stability and surface smoothness of the final product.

RTP501 can also help significantly improve the electrical properties ( dielectrical strength and CTI) of the product.

RTP501 can help maintain the mechanical and electrical properties of the product under high temperature and high humidity circumstances.