Application knowledge of PVC processing aids

1, impact modifier: plastic processing, such as not adding impact modifier, plastic products will become very brittle and hard, a little impact, there will be cracks, can not guarantee the quality and service life. The role of impact modifiers is to make plastic products more resistant to external environmental forces.

2, heat stabilizer: plastic processing molding will be heated, in the heating process, the plastic will inevitably appear the phenomenon of unstable performance. Add heat stabilizer is to stabilize the performance of PVC materials in the heating process.

3, improved processing aids: the so-called improved, as the name suggests, is to improve some of the performance of PVC processing, including improving the poor fluidity of PVC, easy to stick in the equipment on the coking, so in the production of plastic profiles need to add a certain amount of processing aids to overcome the shortcomings of the plastic profile itself.

4, filler: filler is a solid additive in the composition and structure of the plastic with different, also known as filler. To improve certain physical and mechanical properties of plastics and reduce the cost of plastics have obvious effects and economic value. Plastic profile production formula to add fillers, plastic profiles can make the heating of the size of the profile to reduce the rate of change, improve the impact strength, rigidity increase, while also reducing production costs.

5, light stabilizers: light stabilizers can inhibit the polymer photo-oxidative degradation reaction by shielding and absorbing ultraviolet rays, bursting the excitation energy to capture free radicals, thus giving the products a good light stabilization effect and extend their service life.

6, lubricant: the main role of the lubricant is to reduce the polymer and processing equipment and polymer internal molecules between the mutual friction, preventing the resin degradation caused by excessive frictional heat, and improve the efficiency of heat stabilizers.