Organic binders hauvcov khoom sib txhuam- phenolic resins
Phenolic resin yog ib qho khoom siv feem ntau siv hauv cov ntaub ntawv sib txhuam uas muaj cov organic binders. Nws yog ib hom polymer ua los ntawm phenolic tebchaw thiab aldehyde tebchaw raws li raw cov ntaub ntawv thiab acid los yog alkali raws li catalysts los ntawm cov tshuaj tiv thaiv polymer polycondensation. Ntawm lawv, phenolic resin tsim los ntawm polycondensation ntawm phenol thiab formaldehyde yog qhov tseem ceeb tshaj plaws.
Dab tsi yog cov cai tshwj xeeb rau cov resins hauv cov ntaub ntawv sib txhuam:
1. Cov cua sov zoo, zoo thermal decomposition kub thiab thermal poob qis.
2. Lub fineness ntawm hmoov resin yuav tsum siab, feem ntau 100-200 mesh, uas yog zoo rau cov uniformity ntawm dispersion ntawm cov sib tov thiab txo tus nqi ntawm resin nyob rau hauv cov mis.
3. Tsawg cov ntsiab lus phenol dawb.
4. Qhov tsim nyog curing ceev yog 40-60s thiab ntws nrug yog 40-80mm.
Cov resins hauv cov ntaub ntawv sib txhuam tau muab faib ua cov thermoplastic thiab thermosetting phenolic resins raws li hom catalyst.
