Mhedzisiro yevulcanization pane chimiro uye zvivakwa:
Mukugadzira zvigadzirwa zverabha, vulcanization ndiyo yekupedzisira danho rekugadzirisa. Mukuita uku, rabha inosangana neyakaomarara kuita kwemakemikari, kushanduka kubva kune mutsara dhizaini kuenda kune chimiro chemuviri, kurasikirwa nepurasitiki yerabha yakasanganiswa uye kuve nepamusoro elasticity yerabha yakabatanidzwa, nekudaro inowana yakanakisa yemuviri uye michina. zvivako, kupisa kupisa Kushanda, kupikisa kwekugadzirisa uye kusagadzikana kwekuora kunovandudza kukosha kwekushandisa uye kushandiswa kwemhando yezvigadzirwa zverabha.
Pamberi pevulcanization: mutsara chimiro, intermolecular interaction by van der Waals force;
Zvivakwa: plastiki yakakura, kureba kwepamusoro, uye kunyungudika;
Munguva yevulcanization: iyo molecule inotangwa, uye kemikari-cross-linking reaction inoitika;
Mushure mokunge vulcanization: network structure, intermolecular nemakemikari bonds;
Chimiro:
(1) Chemical bond;
(2) Position ye-cross-linking bond;
(3) Dhigirii yekuyambuka-kubatanidza;
(4) Cross-linking; .
Properties:
(1) Mechanical properties (nguva dzose elongation simba. Kuoma. Kusimba simba. Elongation. Elasticity);
(2) Zvimiro zvemuviri
(3) Kugadzikana kwemakemikari mushure mevulcanization;
Kuchinja kwezvinhu zverubha:
Kutora rabha yechisikigo semuenzaniso, nekuwedzera kwedhigirii revulcanization;
(1) Shanduko dzema mechanical properties (elasticity. Tear strength. Elongation simba. Tear strength. Hardness) kuwedzera (elongation. Compression set. Kuneta heat generation) kuderera
(2) Shanduko yezvimiro zvemuviri, kupenya kwemhepo uye kupera kwemvura kuderera, haigone kunyungudika, kungozvimba, kunatsiridza kupisa kupisa.
(3) Kuchinja kwekugadzikana kwemakemikari
Kuwedzera kugadzikana kwemakemikari, zvikonzero
a. Iyo cross-linking reaction inoita kuti mapoka emakemikari anoshanda kana maatomu arege kuvapo, zvichiita kuti zviome kuti kuchembera kuenderere mberi.
b. Iyo network chimiro inotadzisa kupararira kwemamorekuru akaderera, zvichiita kuti zviome kuti radicals yerabha ipararire.
Kusarudzwa uye Kutemerwa kweRubber Vulcanization Mamiriro
1. Vulcanization pressure
(1) Dzvinyiriro inoda kuiswa kana zvigadzirwa zverabha zvave vulcanized. Chinangwa ndechekuti:
a. Dzivirira rabha kubva pakugadzira mabhubhu uye uvandudze compactness yerabha;
b. Ita kuti rubber zvinhu zviyerere uye uzadze mold kuti uite zvigadzirwa nemaitiro akajeka
c. Kuvandudza kunamatira pakati pega rega (adhesive layer uye jira rejira kana simbi dhizaini, jira rejira uye jira rejira) muchigadzirwa, uye uvandudze hunhu hwemuviri (senge flexural resistance) yevulcanizate.
(2) Kazhinji kutaura, kusarudzwa kwekudzvanywa kwevulcanization kunofanirwa kutariswa zvinoenderana nerudzi rwechigadzirwa, fomula, plastiki uye zvimwe zvinhu.
(3) Muchidimbu, mitemo inotevera inofanira kuteverwa: plastiki yakakura, kudzvinyirira kunofanira kuva kuduku; kukora kwechigadzirwa, nhamba yezvikamu, uye chimiro chakaoma chinofanira kunge chakakura; kudzvinyirirwa kwezvigadzirwa zvitete kunofanira kunge kuri kudiki, uye kunyangwe kudzvanywa kwakajairika kunogona kushandiswa
Pane nzira dzinoverengeka dzevulcanization uye kudzvanywa:
(1) Iyo hydraulic pombi inotamisa kudzvanywa kune mold kuburikidza neflat vulcanizer, uye yobva yaendesa kudzvanywa kune yerubha komboni kubva mukuumbwa.
(2) Kudzvinyirirwa zvakananga nevulcanizing medium (senge steam)
(3) Kudzvinyirirwa nemhepo yakamanikidzwa
(4) Jekiseni nemuchina wejekiseni
2. Vulcanization tembiricha uye kurapa nguva
Iyo tembiricha yevulcanization ndiyo inonyanya kukosha mamiriro eiyo vulcanization reaction. Iyo tembiricha yevulcanization inogona kukanganisa zvakananga vulcanization kumhanya, mhando yechigadzirwa uye mabhenefiti ehupfumi ebhizinesi. Iyo tembiricha yevulcanization yakakwira, iyo vulcanization kumhanya inokurumidza, uye kugona kwekugadzira kwakakwira; kana zvisina kudaro, kubudirira kwekugadzira kwakaderera.
Kuwedzera tembiricha yevulcanization kunogona kukonzera matambudziko anotevera;
(1) Inokonzeresa kutsemuka kwerabha molecular cheni uye vulcanization reversion, zvichikonzera kudzikira kwemakanika emukomboni werabha.
(2) Deredza kusimba kwemachira mune zvigadzirwa zverabha
(3) Nguva yekupisa yekomboni yerubha inopfupikiswa, nguva yekuzadza inoderedzwa, uye chigadzirwa hachina chikamu muglue.
(4) Nekuti zvigadzirwa zvakakora zvichawedzera mutsauko wekushisa pakati pemukati nekunze kwechigadzirwa, zvichikonzera kusaenzana vulcanization.
Nguva yekutumira: May-18-2022
