What belongs to plastic profiles
Plastic profile additives four: processing aids
Auxiliaries are mainly developed to improve the performance of plastic molding. Plastic profile processing temperature and decomposition temperature is close, poor mobility, easy to stick in the equipment on the coking, so the production of plastic profiles need to add a certain amount of processing aids to overcome the defects of plastic profiles themselves.
Plastic profile additive five: light stabilizer
The light stabilizer can inhibit the photooxidation degradation reaction of the polymer by shielding and absorbing ultraviolet rays, quenching and exciting energy to capture free radicals, so as to give the products a good light stabilizing effect and prolong their service life.
Plastic profile additives six: filler
The filler is a solid additive that is different in composition and structure from plastic, also known as fillers. To improve the physical and mechanical properties of plastic and reduce the cost of plastic has a significant effect and economic value. Plastic profile production formula to add filler, plastic profiles can be heated after the size of the change in the rate of change, increased impact strength, increased rigidity, while also reducing production costs.
Plastic profiles are used more: window frames, staircase handrails, troughs, wall feet, shaped tubes and so on. Raw materials are mainly hard PVC, a few are semi-hard PVC, soft PVC, polyurethane low foam and other materials.
Plastic profiles with its excellent thermal insulation performance is listed as one of China's key development of building materials. In the production of plastic profiles, the need to pay attention to what problems in order to ensure the quality of profiles and technology.
Plastic Profile A: Impact modifier
Plastic profiles, such as without impact modifier, plastic profiles will be very brittle, slightly collision, easy to break. Plastic profiles used in the production of anti-impact agent modifier mainly by the following three categories: chlorinated polyethylene, polyacrylates, ethylene - vinyl acetate copolymer.
Plastic profile additive two: heat stabilizer
Plastic profile is a thermosensitive plastic, so in the production and processing of plastic profiles, heat stabilizer is essential. The metal salt in the heat stabilizer absorbs the HCL from the PVC, so it can delay the decomposition rate of the plastic and prolong the decomposition time. The most commonly used in the production of plastic profiles is the compound lead salt, which has high thermal stability and low cost.
Plastic profile additives three: lubricant
The main role of the lubricant is to reduce the polymer and processing equipment and polymer molecules between the internal friction between the friction caused by excessive heat caused by resin degradation, improve the efficiency of heat stabilizer.
