Kev hloov ntawm cov khoom ua tau zoo thiab "peb yam" ntawm vulcanization los ntawm nruas vulcanizers
Hauv cov txheej txheem tsim khoom, vulcanization yog txheej txheem kawg (vulcanization cov cuab yeej feem ntau suav nrog lub nruas vulcanizers, ca vulcanizers, inner tube vulcanizers, thiab lwm yam). Hauv cov txheej txheem no, cov roj hmab tau dhau los ua cov tshuaj lom neeg tsis sib haum, hloov pauv los ntawm cov qauv linear mus rau lub cev qauv, poob lub plasticity ntawm cov roj hmab sib xyaw thiab tau txais cov elasticity siab ntawm cov roj hmab sib txuas, yog li tau txais cov khoom zoo ntawm lub cev thiab cov khoom siv. , Thaum tshav kub kub Resistance Sex, hnyav kuj thiab corrosion kuj txhim kho tus nqi siv thiab daim ntawv thov ntau yam ntawm cov khoom siv roj hmab.
Ua ntej vulcanization: linear qauv, molecules cuam tshuam nrog van der Waals quab yuam;
Kev ua tau zoo: siab plasticity, siab elongation, soluble;
Thaum lub sij hawm vulcanization: cov molecules pib thiab cov tshuaj tiv thaiv kev sib txuas tshwm sim;
Tom qab vulcanization: network qauv, cov molecules yog chemically bonded;
qauv:
(1) chemical bond;
(2) Txoj hauj lwm ntawm crosslink;
(3) degree ntawm kev sib txuas;
(4) Crosslink ceev;
kev ua haujlwm:
(1) Mechanical zog (txiav txim siab tensile zog, hardness tensile zog, elongation, elasticity);
(2) Lub cev muaj zog;
(3) tshuaj stability tom qab vulcanization;
Kev hloov pauv ntawm cov roj hmab: noj cov roj hmab ntuj ua piv txwv, nrog rau kev nce qib ntawm vulcanization;
(1) Kev hloov pauv ntawm cov khoom siv kho tshuab (elasticity. Tear strength. elongation strength. tear strength. hardness) nce (elongation. compression deformation. Fatigue heat generation) txo;
(2) Kev hloov pauv hauv lub cev, huab cua permeability thiab dej permeability txo tsis tuaj yeem yaj, tsuas yog o thiab kub ua haujlwm tuaj yeem txhim kho;
(3) Kev hloov pauv hauv tshuaj lom neeg ruaj khov Cov tshuaj lom neeg ruaj khov yog txhim kho, yog vim li cas:
a. Cov tshuaj tiv thaiv kab mob sib txuas ua rau cov tshuaj lom neeg ua haujlwm lossis cov atoms tsis muaj lawm, ua rau nws nyuaj rau kev ua cov tshuaj tiv thaiv kev laus; .
b. Cov qauv network cuam tshuam qhov diffusion ntawm qis molecules, ua rau nws nyuaj rau cov roj hmab dawb radicals kom diffuse.
Kev xaiv thiab kev txiav txim siab ntawm roj hmab vulcanization tej yam kev mob
1. Vulcanization siab
(1) Cov khoom siv roj hmab yuav tsum tau siv lub zog thaum lawv vulcanized. Lub hom phiaj yog:
a. Tiv thaiv npuas hauv cov khoom siv roj hmab thiab txhim kho cov compactness ntawm cov khoom siv roj hmab;
b. Ua cov khoom siv roj hmab ntws thiab sau cov pwm ua cov khoom nrog cov qauv ntshiab;
c. Txhim kho qhov adhesion ntawm txhua txheej (nplaum txheej thiab daim ntaub txheej lossis txheej hlau, txheej ntaub thiab ntaub txheej) hauv cov khoom, thiab txhim kho lub cev ntawm cov roj hmab vulcanized (xws li flex resistance).
(2) Feem ntau, kev xaiv vulcanization siab yuav tsum tau txiav txim siab raws li cov khoom lag luam, formulation, plasticity thiab lwm yam.
(3) Raws li txoj cai, cov cai hauv qab no yuav tsum tau ua raws li: cov yas yog loj, lub siab yuav tsum me dua; cov khoom yog tuab, tus naj npawb ntawm cov txheej yog loj, thiab cov qauv yog complex. Lub siab yuav tsum siab dua; Ob peb:
(1) Lub twj tso kua mis hydraulic xa lub siab mus rau pwm los ntawm lub tshuab vulcanizing tiaj tus, thiab tom qab ntawd cov pwm xa mus rau cov roj hmab;
(2) Ncaj nraim los ntawm vulcanization nruab nrab (xws li chav);
(3) Pressurized los ntawm compressed cua;
(4) Txhaj los ntawm lub tshuab txhaj tshuaj.
Curing kub thiab curing lub sij hawm
Qhov kub ntawm vulcanization yog qhov tseem ceeb ntawm cov tshuaj tiv thaiv vulcanization. Qib ntawm vulcanization kub tuaj yeem cuam tshuam ncaj qha rau vulcanization ceev, cov khoom zoo thiab cov txiaj ntsig kev lag luam ntawm kev lag luam. High vulcanization kub, ceev vulcanization ceev thiab ntau lawm efficiency; txwv tsis pub, tsawg ntau lawm efficiency.
Qhov kub ntawm vulcanization tuaj yeem ua rau muaj teeb meem hauv qab no;
(1) Ua rau cov roj hmab molecular saw tawg thiab vulcanize rov qab mus rau qhov qub, ua rau txo qis hauv cov khoom siv ntawm cov roj hmab;
(2) Txo lub zog ntawm textiles hauv cov khoom siv roj hmab;
(3) Lub sij hawm scorch ntawm cov khoom siv roj hmab yog luv, lub sij hawm txhaws yog txo, thiab cov khoom yog ib feem tsis muaj kua nplaum;
(4) Vim tias cov khoom tuab yuav ua rau qhov sib txawv ntawm qhov sib txawv ntawm sab hauv thiab sab nraud ntawm cov khoom, ua rau tsis sib xws vulcanization.
Kev xaiv ntawm vulcanization kub yuav tsum ua tib zoo xav txog yam xws li hom roj hmab, vulcanization system thiab cov qauv khoom.
Qhov haum vulcanization kub ntawm ntau yam roj hmab feem ntau yog:
NR<143°C; SBR<180°C; IR, BR, CR<151°C; IIR< 170°C; NBR< 180°C
