Cov Txheej Txheem Ntawm Cov Roj Hmab
Aug 11, 2021
1. Cov muaj pes tsawg leeg ntawm cov roj hmab mis
Muaj ntau cov khoom xyaw hauv cov roj hmab tsim, thiab cov khoom xyaw no tseem hu ua cov tshuaj sib xyaw ua ke. Txhua qhov kev tivthaiv muaj qhov sib txawv hauv cov tshuaj. Nws yog vim qhov tshwm sim tshwm sim ntawm ntau tus neeg sawv cev sib xyaw uas cov roj hmab sib xyaw muaj cov yam ntxwv ntawm lub cev thiab cov khoom siv thiab tsim khoom thiab ua cov yam ntxwv. Cov roj hmab sib xyaw ua ke muaj cov hauv qab no.
(1) Roj hmab nyoos: Nws yog cov khoom siv tseem ceeb ntawm cov mis, tab sis nws yog ib hom roj hmab, nws kuj tseem tuaj yeem ua ke ntawm ob lossis ntau hom roj hmab, lossis cov roj hmab-yas sib xyaw. Pawg ntawm cov roj hmab nyoos thiab cov ntsiab lus hauv cov mis txiav txim siab cov yam ntxwv tseem ceeb tshaj plaws ntawm cov roj hmab. Piv txwv li, cov roj hmab nyoos hauv cov mis yog roj hmab ntuj. Elasticity; cov roj hmab nyoos yog roj hmab nitrile, cov roj hmab formula muaj cov roj ua haujlwm zoo, thiab lwm yam.
(2) Vulcanization system: Muaj cov tshuaj ua kom lub cev ua kom nrawm, ua kom nrawm dua thiab ua haujlwm nquag. Vulcanizing cov neeg sawv cev xws li leej faj, peroxides, tus pub pub leej faj, thiab lwm yam, tau siv hauv kev tsim los tsim cov kab sib txuas sib txuas ntawm cov roj hmab macromolecules los tsim lub network-zoo li peb-txheej qauv, kom cov roj hmab muaj zog dua, muaj zog thiab lwm yam khoom siv lub cev khoom. Cov txiaj ntsig ntawm cov tshuaj nrawm hauv qhov tsim yog los txhawb tus nqi vulcanization thiab txo lub sij hawm vulcanization. Nws pawg suav nrog thiazoles, sulfenamides, thiurams, guanidines thiab thioureas, thiab lwm yam; cov nyhuv ntawm tus neeg sawv cev nquag yog txhawm rau txhim kho tus nrawm. Cov dej num, tseem hu ua booster. Cov pawg tseem ceeb yog hlau oxides xws li zinc oxide thiab organic acids xws li stearic acid. Peb hom vulcanizing cov neeg sawv cev, ua kom nrawm dua, thiab cov neeg sawv cev ua haujlwm sib koom ua ke txhawm rau ua kom cov roj hmab sib xyaw mus txog qhov ua kom txaus vulcanization nrog qee yam khoom siv lub cev thiab cov tshuab.
(3) Kev tiv thaiv kab ke: Lub luag haujlwm tseem ceeb hauv kev tsim qauv yog txhawm rau tiv thaiv kev puas tsuaj ntawm cov khoom lag luam roj hmab vim qhov cuam tshuam ntawm lub teeb, cua sov, thiab oxygen nyob hauv huab cua thaum khaws cia thiab siv, lossis txuas ntxiv kev sib txuas, tawv thiab lwm yam teeb meem kev laus . Nws cov pawg tseem ceeb suav nrog ntau yam amines thiab hloov pauv phenols.
(4) Txhim kho cov txheej txheem: Tus neeg sawv cev txhawb nqa muaj ntau hom carbon dub thiab dawb carbon dub, uas muaj qhov cuam tshuam ntxiv hauv cov roj hmab sib xyaw. Lub zog tensile, tensile kev nyuaj siab, hardness thiab lwm yam khoom siv zog ntawm cov roj hmab tuaj yeem ua kom zoo dua qub; cov khoom ntim xws li av nplaum, calcium carbonate, silica fume, thiab lwm yam hauv cov roj hmab feem ntau yog siv rau kev sau thiab txo nqi, uas muaj kev cuam tshuam rau lub cev thiab cov khoom siv dag zog. Kev mob siab rau me me.
(5) Cov kab ke ua haujlwm: Nws lub luag haujlwm yog txhawm rau txhim kho kev sib txuas ntawm cov roj hmab thiab cov khoom siv xws li cov hlua hlau, cov xov paj thiab cov ntaub, xws li resorcinol formaldehyde dawb carbon dub system, cobalt ntsev system, resorcinol acetaldehyde resin (RE) System lossis resorcinol formaldehyde cob thiab cobalt ntsev sib xyaw ua ke, thiab lwm yam.
(6) Kev pab ua haujlwm: Muaj ntau yam roj ua, peptizers, homogenizers, dispersants, thiab lwm yam. Lub luag haujlwm tseem ceeb hauv kev tsim qauv yog txhawm rau txhim kho qhov yooj yim ntawm kev ua cov roj hmab, txo kev siv zog, txhawb cov roj nplua nyeem, tackifiers, thiab kho qhov nyuaj ntawm roj hmab vulcanized. Xws li ntau yam roj av-based softeners, hluavtaws hluavtaws-based cov khoom siv roj hmab, ntws raws phenolic resins, ntxhiab tsw disulfides, pentachlorothiophenol thiab lwm yam saponin, roj av resin alkyl phenolic resins, ntxhiab disulfides, pentachlorothiophenol Tos.
(7) Lwm yam khoom siv:
Xws li cov xim sib xyaw, cov neeg ua haujlwm sib txuas, cov tshuaj tiv thaiv antistatic, cov tshuaj ua npuas, cov tshuaj hnyav, thiab lwm yam.