PTFE Anti-dripping Agents

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PTFE Anti-dripping Agents

PTFE Anti-dripping agent is mainly used in plastic materials that require flame retardant grade up to V0. It can prevent melting dropping and improve flame retardant performance. It can still meet the requirements of standard UL V-0 when reducing the amount of flame retardant, and at the same time reduce costs and enhance product competitiveness. High molecular weight PTFE(molecular weight of about 4 million to 5 million) fibrosis under the shear force of the screw to form a network structure, thus playing a role in anti-dripping.

There are three main types of anti dripping agents: Pure powder type, Coated Type and Emulsion type.

Pure Powder Type

Pure powdered anti-dripping agent is pure PTFE particles. The dispersion and fluidity of PTFE can be improved by sintering the surface of the particles. When the anti-dripping additive is premixed with plastics, it has better dispersing function and avoids early fibrosis.

The advantage of pure powder anti-dripping agent is that the content of PTFE is 100%, and it can be added in a large amount without any other impurities.

Coated Type

Coated anti-dripping agent is a kind of polymer coated on the surface of PTFE particles, which makes it have better dispersion in the process of mixing plastic resin. The outer coated polymer is generally polyacrylonitrile, polystyrene and polymethyl methacrylate.

Compared with the pure powder and emulsion type anti dripping agents, the coated anti dripping additive has the advantages of good dispersibility, easy to use, no agglomeration at room temperature, easy to store, no crystal spots on the product surface, and high surface finish. However, the polymer coated on the outer layer of the final product belongs to impurities, which will have a certain impact on the performance of the product. In addition, the maximum dosage of coated anti dripping agent can only be 0.5%.

Emulsion Type

The emulsion type anti dripping agent is made of polytetrafluoroethylene dispersed in water under the action of dispersant and made into a polytetrafluoroethylene dispersion emulsion. Because the emulsion contains a lot of water, it has higher requirements for the equipment and technology when used.

Code	Type	Main Index	Main Features	Applications
TPD-405B	Coated Type	PTFE content: 50±2% Bulk Density: 350g/L	1. Excellent dispersibility, compatibility 2. Excellent operability 3. No agglomeration at room temperature	Suitable for thermoplastics, such as PC, ABS, PC/ABS, HIPS, Nylon, PPO, PBT, PP or their compounds that require to meet UL94 V0(1.6mm) standard.
TPD-450	Pure Powder Type	PTFE content: ≥99.99% Average Particle Size(µm): 200±50 Apparent density: 700g/L	1. Can be added in large amount 2. Excellent dispersibility and operability 3. No agglomeration at room temperature 4. Less impact on the impact strength	Suitable for thermoplastics, such as PC, ABS, PC/ABS or plastic alloy that require to meet UL94 V0 standard.
TPD-470	Pure Powder Type	PTFE content: ≥99.0% Average Particle Size(µm): 500±150 Bulk Density: 740g/L	1. Can be added in large amount 2. Excellent operability 3. No agglomeration at room temperature 4. Less impact on the impact strength	Suitable for thermoplastics, such as PC, ABS, PC/ABS or plastic alloy that require to meet UL94 V0 standard.