Sei rubber ichida kupiswa? Ndezvipi zvakanakira vulcanizing rabha?
Kunyange zvazvo rabha raw rabha iinewo mamwe maitiro anobatsira ekushandisa, ine zvakare akawanda anokanganisa, senge kuderera kwesimba uye kuderera kwekusagadzikana; Kutonhora kunoita kuti zviome, kupisa zvinonamira; Nyore kuchembera, etc. Kare kumakore ekuma1840, zvakaonekwa kuti rabha inogona kupinda muchinjika-inobatanidza nekuipisa pamwe chete nesarufa. Naizvozvo, kusvika parizvino, kunyangwe rabha inogona kusanganiswa kwete nesarufa chete, asiwo nemamwe akawanda emakemikari ekuyambuka maajenti uye nzira dzemuviri nemakemikari, muindasitiri yerabha, yagara iri tsika kutaura nezve rubber crosslinking se "vulcanization", nepo. iyo indasitiri yekugadzira mapurasitiki dzimwe nguva inoreva kuyambuka kuita sekurapa. Vulcanization inonatsiridza zvakanyanya kuita kwerabha mbishi, inowedzera huwandu hwekushandiswa kwerabha, uye inoisa hwaro hwehukuru hwekugadzira maindasitiri uye kushandiswa kwerabha.
Rubber vulcanization ndeimwe yemaitiro makuru mukugadziriswa kwechigadzirwa cherabha, uye idanho rekupedzisira rekugadzirisa mukugadzirwa kwechigadzirwa cherabha. Mukuita uku, rabha inopinda munhevedzano yekuchinja kwekemikari yakaoma, kubva musanganiswa wepurasitiki kuenda kune yakanyungudika kana yakaoma muchinjiko-yakabatana rabha, kuitira kuti iwane yakakwana yemuviri, mechanika uye kemikari zvivakwa, uye kuvandudza nekuwedzera kukosha kwekushandisa uye kushandiswa. huwandu hwezvinhu zverubha. Naizvozvo, vulcanization ine kukosha kukuru pakugadzira nekushandiswa kwerabha uye zvigadzirwa zvayo.
Pfungwa yevulcanization
Vulcanization inoreva iyo semi-yapedzwa chigadzirwa chakagadzirwa kubva kumidziyo yerabha ine imwe purasitiki uye viscosity (raw mbishi, musanganiswa wepurasitiki, yakasanganiswa rabha) kuburikidza nekugadzirisa kwakakodzera (sekukunguruka, extrusion, kuumba, nezvimwewo) pasi pemamwe mamiriro ekunze, kuburikidza nemakemikari. zvinhu (senge vulcanization system) kana zvinhu zvemuviri (senge γ Iyo nzira yekushandura mhedzisiro yemwaranzi kudzoka kuita yakapfava elastic rabha zvigadzirwa kana yakaoma rabha zvigadzirwa kuti uwane kushanda mukati. Kushandiswa panguva ye vulcanization, mamiriro ekunze (akadai sekudziya kana radiation) anokonzera kemikari kuita pakati perabha yakasvibirira muzvikamu zvezvinhu zverabha uye vulcanizing agent kana pakati perabha yakasvibirira nerabha yakasvibirira, zvichikonzera kusanganisa kwerabha. linear rabha macromolecules kuita matatu-dimensional network yakarongeka macromolecules.
Kuburikidza nekuita uku, zvakasiyana siyana zverabha zvakagadziridzwa zvakanyanya, zvichiita kuti zvigadzirwa zverabha zviwane zvemuviri, zvemuchina, uye zvimwe zvivakwa zvinokwanisa kuzadzisa zvinodiwa nekushandiswa kwechigadzirwa. Izvo zvakakosha zvevulcanization ndeyekuyambuka-kubatanidza, inova maitiro ekushandura linear rabha mamorekuru zvimiro kuita spatial network zvimiro.
Sulfurization nzira
Mushure mekuyera huwandu hwerabha yakasanganiswa uye vulcanizing agent, nhanho inotevera ndeyekuwedzera vulcanizing agent. Zvinokurudzirwa kutevera matanho anotevera kuti upedze.
1. Chekutanga, chenesa chigayo chekuvhura kuti uve nechokwadi chekuchena kwayo kudzivirira kusanganiswa kweimwe tsvina. Zvadaro gadzirisa kukwidibira kweguyo rekuvhura kusvika kushoma uye wodira rabha yakasanganiswa muchigayo chekuvhura kuti ipfuure. Mushure mekunge pfumbu yakaonda yapedzwa, iyo roll spacing yemusanganisi inofanirwa kukwidziridzwa kuti ive nechokwadi chekuti rabha yakasanganiswa yakaputirwa zvakaenzana pamapumburu. Kupisa kwepamusoro kwerabha yakasanganiswa kunofanira kunge kunenge 80oC.
2. Nekugadzirisa kuputika kwemvura uye zvakakodzera kutonhora mvura, kutonhora kwerabha yakasanganiswa kunodzorwa kumativi e60-80 ° C. Panguva ino, vulcanizing agent inotanga kuwedzerwa kune yakasanganiswa rubber.
Nguva yekutumira: Oct-25-2023
