Shanghai Daoqin Plastics Co., Ltd.

 
       氨基 plastics is aldehyde and 脲, 硫脲, poly amine or amine shrink combined material. it commonly used fine powder, powder or and other as 填科． usually main/primary used as pressure parts or lamination products. full 部氨基 plastics raw materials 都会 has nitrogen and combined aldehyde ． rear can use acid 鉴定.
　　脲 or resin 脂 methods: milli Sample, add 入一滴 hot concentrated acid (约110℃), add hot dry. cooling rear, add 入一滴苯 amine, in 195℃ 油浴 in add hot 5 separation 钟. cooling, add 入三滴 dilute water (1: 1) and 5滴10％ 硫 acid solvent liquid. chlorine 仿一起摇荡, solvent liquid is color to color, table/sheet has or 硫脲存 in.

　　进行硫 鉴定 experiment/testing rear, can will and 硫脲区 separation 开.

　　三 poly amine resin can use hot understanding methods 鉴定. a small amount of Sample and concentrated salt acid hot understanding tube/pipe in, in 190~200℃ 油浴 in add hot. use rigid 果红试纸复 cover/cap tube/pipe 口, add hot, 直至试纸不 again color is 止. cooling, rear add 入几粒硫代硫 acid 钠 晶体 to cooling liquid in. hot understanding tube/pipe use 3％ oxidation hydrogen solvent liquid lubricating wet rigid 果红试纸 cover/cap good. in l60℃ 油浴 in add hot. in poly amine 时, 试纸就变 is color (脲 aldehyde resin 例脂不 reaction).

　　苯 amine 树指也 can use hot understanding methods 鉴定. will hot understanding gas 体通入次 chlorine acid or chlorine acid solvent liquid in, generate color or color is amine resin.