Khoom npe:phenolic cob

Molecular hom:

CAS Nr.:9003-35-4

Cov khoom siv molecular:

Chemical Properties:

Phenol-formaldehyde resin yog npaj raws li hauv qab no:
C6H5OH+H2C=O —> [-C6H2(OH)CH2-]n
Ib-theem Resins.Qhov piv ntawm formaldehyde rau phenol yog siab txaus kom tso cai rau cov txheej txheem thermosetting coj qhov chaw yam tsis muaj qhov sib ntxiv ntawm lwm qhov chaw ntawm kev sib txuas.
Ob-theem Resins.Qhov piv ntawm formaldehyde rau phenol yog tsawg txaus los tiv thaiv cov tshuaj tiv thaiv thermosetting tshwm sim thaum lub sij hawm tsim cov resin.Lub sijhawm no, cov resin hu ua novolac resin.Tom qab ntawd, hexamethylenetetramine tau muab tso rau hauv cov khoom siv los ua qhov chaw ntawm cov tshuaj sib txuas sib txuas thaum lub sijhawm ua haujlwm molding (thiab hloov mus rau lub thermoset lossis kho lub xeev).

Hom ntawmphenolic cobs:

1, Phenolic Resins rau cov khoom sib txhuam
2 、 Cov log tsheb roj hmab resins
3, Phenolic resins rau cemented abrasives
4, Phenolic resins rau xyoob thiab ntoo cov ntaub ntawv
5, Phenolic Resins rau Oilfield
6, Phenolic resins rau molding tebchaw
7, Phenolic resins rau impregnated cov ntaub ntawv
8, Resins rau txheej kev lag luam
9, Phenolic resins rau thermal rwb thaiv tsev cov ntaub ntawv
10, Phenolic resins rau coated abrasives

Daim ntawv thov:

Phenolic resins yog siv rau cov nqi qis uas yuav tsum muaj cov khoom siv hluav taws xob zoo, tiv thaiv tshav kub, lossis tshuaj lom neeg.Qhov nruab nrab lub neej txee ntawm cov khoom no yog li 1 lub hlis ntawm 21.1 ° C.Qhov no tuaj yeem txuas ntxiv los ntawm kev khaws cia hauv lub tub yees ntawm 1.6 txog 10 ° C.Kev sib txawv ntawm cov catalyst (raws li cov thickness ntawm cov cam khwb cia) thiab tsa qhov kub thiab txias rau 93 ° C yuav hloov kho lub sij hawm ntev li ntawm 8 h mus rau luv li 15 min.
Qee qhov shrinkage tshwm sim hauv qhov ua tiav casting (0.012 txog 0.6 mm / mm), nyob ntawm seb muaj pes tsawg tus muab tub lim, tus nqi ntawm cov catalyst, thiab kev kho mob.Kev kho mob sai dua ua rau ntau dua ntawm shrinkage.Txij li thaum lub voj voog kho tau beaccelerated, phenolics tau siv rau hauv kev ua haujlwm luv luv.
Cam khwb cia phenolic qhov chaw tau yooj yim tshem tawm ntawm pwm yog tias cov neeg siv khoom siv tau pom zoo los ntawm tus neeg muag khoom.Posteuring txhim kho cov yam ntxwv ntawm qhov ua tiav casting.