Shanghai Daoqin Plastics Co., Ltd.

waste plastics products in use process in due to to outer conditions effect/influence and light and hot function, already has different degree aging, its in various additives has different degree loss 失, recycling waste soft polyvinyl chloride (PVC) in increase agent loss relatively large, use it production recycled products, its property can ratio use new material production products 差. is can can improve/increase recycled products quality, in again made process in has necessary heavy new add amount additives, 以改进 waste plastics molding processing, machine 械, hot and electrical and other property can.

　　 in again products formulation 时应当考虑 to below/following 几点:

　　　(1) additives types type selection.
　　　(2) additives add amount 确定.
　　　(3) formulation adjustment.

　　1. additives types type selection 　 additives selection is according to plastics product types and aging degree and other 确定.

　　 polyolefin new material in processing molding generally add a small amount of additives, antioxidant, outer absorption agent and other, its waste material recycled 时, generally add a small amount of color agent can, therefore formulation difficult 确定. remove non this category of plastics heavy aging, hard 发脆, need according to specific 情况确定配 material formed.

　　 polyvinyl chloride (PVC) plastics formed comparison complex, especially is soft polyvinyl chloride (PVC), additives types type relatively more, has increase agent, stabilizer, outer absorption agent, lubricant and material and other, its in increase agent is 主, use amount most more. its products in use process in to light, hot and other gas conditions effect/influence, increase agent 逐渐渗出, products hard 化, especially is its physical properties large large decline, aging, can meet/satisfy use requirements formed is waste product. utilizing this category of waste products recycled must 补充足够数 amount increase agent and other additives, most large degree its mechanical properties, therefore, combined 理确定 formulation separation important.

　　 increase agent add amount main/primary recycled polyvinyl chloride (PVC) products requirements hardness 而定, is 此应考虑 recycling polyvinyl chloride (PVC) waste products in hard and soft ratio/proportion. polyvinyl chloride (PVC) film, 人造革 and and other soft products and hard pipe/tube, type and other products in increase agent amount very same, therefore, need will hard and soft recycling material versus use, adjustment 二者 掺 mixed ratio/proportion, can made requirements hardness recycled products, can decrease/reduce increase agent use amount, 甚至不 use increase agent.

　　 in material selection additives 总原则 is ensure recycled products tool has property can, combined use requirements, also 不致于 cost high. generally 说, need 考虑如 lower 几点:

　　(1) due to waste plastics and recycled products price relatively low, therefore using/adopting additives price need 便宜.
　　(2) positive is waste plastics is various color waste material mixed combined material, in recycled processing generally add deep color color agent, for selection additives appearance color requirements high.
　　(3) additives can meet/satisfy recycled products property can requirements.