Shanghai Daoqin Plastics Co., Ltd.

is what need add antioxidant

antioxidant is types can has reduce plastics material oxidation reaction speed degree, plastics material aging degradation plastics additives. 广义 说, large more low also agent is resistant oxidation agent, is according to industrial applications different selection suitable antioxidant, this its in has chemical and material stability property high, also has property low low also agent, it can used as formulation in resistant oxidation agent. 例如, in plastics, combined formed fiber, and other polymer/macromolecule material in, this polymer/macromolecule material easy hot oxidation degradation, add antioxidant can maintain polymer/macromolecule material excellent property can, long its use lifespan. resistant oxidation agent application 几乎涉 and has polymer product, plastics use antioxidant usually 包括酚 type antioxidant, type antioxidant and metal 离子钝化 agent and other, antioxidant application product types and add amount main/primary different plastics 材质, processing process and applications 决定.

antioxidant is most commonly used additives 之一, in plastics processing in add a small amount of antioxidant, can anti or aging process, from long plastics products use lifespan. however upper, very more for resistant oxidation agent understanding, solution elastomer yellowing has methods is is add resistant oxidation agent and outer absorption agent, can has anti and yellowing. resistant oxidation agent types type more, from in selection combined product need Technical Support and experience 积累. formed elastomer oxidation yellowing important causes is outer 线, outer main/primary 自于太 cationic light. therefore, especially is for product need in outer use 客户, 我们建议 in product in add 入一定 amount outer absorption agent, can has absorption outer and 延缓变黄, and outer absorption agent and resistant oxidation agent use, can to function, can to 1 add 1 large 于2 效果.

antioxidant function

1.协同 function

amine type and type resistant oxidation agent and oxidation material separation understanding agent combined use, can large large improve/increase material heat resistant property, resistant oxidation property and anti-aging property, this is function, it separation 子间协同 function and separation inner function. has 人提出 separation 子间协同 function uniform 协同效应 and non uniform 协同效应 concept. uniform 协同效应 is types mechanism same active property different combined material between function. non uniform 协同效应 is types or types different mechanism resistant oxidation agent between function. separation inner function by is 自协同 function, it is types has more can stabilizer, it between tool has function.

当酚 type antioxidant and type antioxidant combined use 时, ratio mono use type resistant oxidation agent tool has more high long anti oxidation 效果. antioxidant can separation understanding oxidation hydrogen, in processing in main/primary used as antioxidant. due to processing temperature degree different, processing stability property different. 例如, in high temperature lower, use resistant oxidation agent and type resistant oxidation agent use, type resistant oxidation agent can oxidation hydrogen, make resistant oxidation agent more add stability, from performance 出协同 function. 例如, has machine acid ester and retardant poly type type antioxidant use 时, 捕获 自由基数 amount large large increase.

2. use 断链式 antioxidant polymer stability property

for antioxidant dry reaction active property types mechanism, 即段链式施主 mechanism and 段链式受体 mechanism. 段链式施主 mechanism type is oxidation 自由基团 and made agent type, its is amine type between reaction. from made agent in 生出 自由基 can reaction that 样消灭一 oxidation material 基团.    

3. use antioxidant high polymer stability property

预 anti property or antioxidant can separation understanding hydrogen oxidation material, 而不形 formed 自由基 in material, therefore, it can anti hydrogen oxidation material separation understanding is 自由基 is 导致 链 支化.