Shanghai Daoqin Plastics Co., Ltd.

         antioxidant is type chemical material 质, 俗称“ anti agent ”, in polymer in add a small amount of antioxidant, antioxidant add amount —般 has 0.1-0.5份, can or made polymer oxidation process 进行, from retardant polymer aging long its use lifespan. for engineering plastics processing 说, antioxidant can anti certain polymer (如abs and other) processing process in hot oxidation degradation, make its molding processing can 顺利进行.

        理想 antioxidant tool below/following conditions: ①应 tool has high resistant oxidation can force: ② and resin versus property good, 不析出;③ processing properties good. in high poly material processing temperature degree lower 不挥发, separation understanding;④ resistant property good, solvent water and in;⑤本身 color most good is color or shallow color.以不污染 products;⑥无毒 or low 毒;⑦ price low 廉.

        事实 upper, 任何一 types antioxidant can full meet/satisfy this conditions, therefore, use in according to engineering plastics types type, applications and processing methods, utilizing various additives long, combined use, production 协同效应.

        随 engineering plastics industrial development, antioxidant use day 益广泛, demand amount increase, currently, application antioxidant engineering plastics has polyamide (PA), polyoxymethylene (POM), ABS modified material and other.

         antioxidant function mechanism

         according to polymer/macromolecule hot oxidation mechanism, in hot oxidation process in generate unstable 自由基 and hydrogen oxidation material is 引起材 material property can poor main/primary factors, antioxidant function mechanism positive is use active property 自由基 and separation understanding hydrogen oxidation material. tool has made 自由差连锁 reaction function 自由基抑 made agent is antioxidant, it amine type and type large series, used for engineering plastics main/primary is type antioxidant. tool has separation understanding hydrogen oxidation function hydrogen oxidation material separation understanding agent is antioxidant, main/primary 包括硫代 ester and acid ester large type, usually and antioxidant use.