Shanghai Daoqin Plastics Co., Ltd.

antioxidant types type through its reaction principle can separation is 自由基抑 made agent, hydrogen oxidation material separation understanding agent, heavy metal 离子钝化 agent and other, lower 面精颜 chemical industry and large 家聊聊 this 3 types type type antioxidant, how use antioxidant and use need attention/notes 事项.

一, antioxidant types type

1.自由基抑 made agent

自由基抑 made agent, is main/primary antioxidant, amine type and type. amine type resistant oxidation agent 几乎都 is 芳香仲 amine material, main/primary 包括二芳基仲 amine, for amine, ketone amine, aldehyde type and other. it large more tool has relatively good resistant oxidation 功效, 但污染严 heavy, main/primary used for industrial. type antioxidant main/primary is retardant type, its resistant oxidation function generally low amine type antioxidant, 但无污染, main/primary used for plastics and shallow color products.

2. hydrogen oxidation material separation understanding agent

oxidation hydrogen separation understanding agent also 称辅助 antioxidant, main/primary 由硫代二丙 acid ester, acid ester and other ester formed. it main/primary used for polyolefin, and type antioxidant use generate function.

3. heavy metal 离子钝化 agent

polymer and heavy metal 接触会 in heavy metal catalytic function lower generate degradation reaction. cable material is copper, formed copper loss 伤, need add copper 离子钝化 agent. 如酰肼, 肟, aldehyde amine shrink combined material is heavy metal 离子钝化 agent.

二, add and use antioxidant types methods

1. in products combined formed rear 立即添 add antioxidant 保护材 material.

2. 材 material molding processing in small add, generally most good add 人, in combined formed stage/phase material drying front add 入, polyolefin especially is PP材 material, has this type of has stability 化处理 rear has application value.

三, use precautions

• 协同效果:  当两 types or types above antioxidant mixed combined use 时, resistant oxidation function large mono use, this type of phenomenon by is resistant oxidation agent function. generally is, this is is different resistant oxidation agent can in different stage/phase retardant 止油脂 oxidation reaction. types function, resistant oxidation agent and other resistant oxidation agent, metal 离子螯 combined agent composite/compounding combined, tool has resistant oxidation active property.

• 添 add time:   from resistant oxidation agent function mechanism can 看出, resistant oxidation agent can retardant 碍脂质 oxidation, 延缓开始 oxidation time, can 改变恶化 rear 果, therefore fast add resistant oxidation agent.

• solvent understanding dispersion property:   resistant oxidation agent in in solvent understanding degree effect/influence resistant oxidation 效果. 例如, water solvent property resistant bad acid can acid ester used for resistant oxidation agent, solvent property resistant oxidation agent use solvent agent will its melt 入油脂 in, in pure in add antioxidant, can in conditions lower concentrated solvent liquid 形式直接 add 入, in remove oxygen gas lower 搅拌一段 time, can ensure resistant oxidation system can uniform dispersion in in 各处.

• 适当 添 add amount:   and anti agent different, resistant oxidation agent add amount 并不总 is and resistant oxidation 效果呈 positive related, ultra- 一定 concentrated degree rear, 不但不会 reinforcement resistant oxidation function, 反而会 promote oxidation function.

• 避免 other factors effect/influence:   is make resistant oxidation agent separation function, must control effect/influence its also property various factors, this effect/influence factors is light, hot, oxygen, metal 离子以 and resistant oxidation agent in food in dispersion 状态, outer light and hot can promote resistant oxidation agent separation understanding 而失效.

• improve/increase resistant oxidation agent 效果:   渡元素 metal, especially is tool has oxidation also electrical 位 三价 or more 价 渡 metal, tool has very strong/high promote oxidation function, by is oxidation agent, therefore, amount and this mixed combined. usually in material in add resistant oxidation agent 时, also need meanwhile add acid property material 质, can significantly improve/increase resistant oxidation 效果, this acid property material by is resistant oxidation agent increase agent.