Chiboliboli cha pulasitiki ndi chidule cha chiboliboli chophatikizana chomwe chimagwiritsidwa ntchito popanga makina opondereza, kupanga makina otulutsa, kupanga jakisoni, kupanga makina opumira ndi kupanga thovu lochepa. Kusintha kogwirizana kwa ziboliboli zozungulira ndi zopingasa ndi makina othandizira kupanga zinthu kumatha kukonza magawo angapo a pulasitiki okhala ndi mawonekedwe osiyanasiyana komanso kukula kosiyanasiyana. Ziboliboli za pulasitiki ndiye mayi wa mafakitale, ndipo zinthu zatsopano tsopano zikuphatikiza mapulasitiki.
Makamaka chimaphatikizapo nkhungu yachikazi yokhala ndi malo osinthika okhala ndi gawo lophatikizana la nkhungu yachikazi, gawo la nkhungu yachikazi ndi bolodi la makadi lophatikizana la nkhungu yachikazi, ndi gawo lophatikizana la nkhungu yozungulira, gawo la nkhungu yozungulira, bolodi la makadi lophatikizana la nkhungu yachimuna, gawo lodula m'mimba ndi A punch yokhala ndi pakati losinthasintha lopangidwa ndi mbale zophatikizika zodulidwa mbali.
Pofuna kukonza magwiridwe antchito a pulasitiki, zinthu zosiyanasiyana zothandizira, monga zodzaza, zopaka pulasitiki, zodzola, zokhazikika, zopaka utoto, ndi zina zotero, ziyenera kuwonjezeredwa ku polima kuti zikhale pulasitiki yokhala ndi magwiridwe antchito abwino.
1. Utomoni wopangidwa ndiye chinthu chofunikira kwambiri pa pulasitiki, ndipo kuchuluka kwake mu pulasitiki nthawi zambiri kumakhala 40% mpaka 100%. Popeza kuchuluka kwake ndi kwakukulu, ndipo mtundu wa utomoni nthawi zambiri umatsimikizira mtundu wa pulasitiki, anthu nthawi zambiri amaona utomoni ngati chinthu chofanana ndi pulasitiki. Mwachitsanzo, kusokoneza utomoni wa polyvinyl chloride ndi mapulasitiki a polyvinyl chloride, ndi utomoni wa phenolic ndi mapulasitiki a phenolic. Ndipotu, utomoni ndi pulasitiki ndi malingaliro awiri osiyana. Utomoni ndi polima wosakonzedwa womwe sumagwiritsidwa ntchito popanga mapulasitiki okha, komanso zinthu zopangira zokutira, zomatira, ndi ulusi wopangidwa. Kuwonjezera pa gawo laling'ono kwambiri la mapulasitiki okhala ndi utomoni wa 100%, mapulasitiki ambiri amafunikira zinthu zina kuwonjezera pa utomoni waukulu.
2. Filler Filler imatchedwanso filler, yomwe ingathandize kulimbitsa mphamvu ndi kukana kutentha kwa pulasitiki ndikuchepetsa ndalama. Mwachitsanzo, kuwonjezera ufa wa matabwa ku phenolic resin kungachepetse kwambiri mtengo, zomwe zimapangitsa pulasitiki ya phenolic kukhala imodzi mwa pulasitiki zotsika mtengo kwambiri, komanso kukonza kwambiri mphamvu ya makina. Fillers zitha kugawidwa m'mitundu iwiri: organic fillers ndi inorganic fillers, yoyamba monga ufa wa matabwa, nsanza, mapepala ndi ulusi wosiyanasiyana wa nsalu, ndipo yachiwiri monga ulusi wagalasi, diatomaceous earth, asbestos, ndi carbon black.
3. Mapulasitiki Opangira Mapulasitiki amatha kuwonjezera kusinthasintha kwa pulasitiki, kuchepetsa kusweka, ndikupangitsa kuti mapulasitiki azikhala osavuta kuwakonza ndi kuwapanga. Mapulasitiki nthawi zambiri ndi mankhwala owiritsa kwambiri omwe amasakanikirana ndi utomoni, osapha poizoni, opanda fungo, komanso okhazikika ku kuwala ndi kutentha. Omwe amagwiritsidwa ntchito kwambiri ndi ma phthalate esters. Mwachitsanzo, popanga mapulasitiki a polyvinyl chloride, ngati mapulasitiki ambiri awonjezedwa, mapulasitiki ofewa a polyvinyl chloride angapezeke; ngati palibe mapulasitiki owonjezera kapena ochepa omwe awonjezedwa (kuchuluka <10%), mapulasitiki olimba a polyvinyl chloride angapezeke.
4. Chokhazikika Kuti utomoni wopangidwa usawonongeke ndi kuwala ndi kutentha panthawi yokonza ndi kugwiritsa ntchito, komanso kuti ukhale wautali, chokhazikikacho chiyenera kuwonjezeredwa ku pulasitiki. Zomwe zimagwiritsidwa ntchito kwambiri ndi stearate ndi epoxy resin.
5. Zopaka utoto Zopaka utoto zimatha kupanga mapulasitiki kukhala ndi mitundu yosiyanasiyana yowala komanso yokongola. Utoto wachilengedwe ndi utoto wosapangidwa ndi zinthu zachilengedwe umagwiritsidwa ntchito kwambiri ngati zopaka utoto.
6. Mafuta Opaka Ntchito ya mafuta opaka ndikuletsa pulasitiki kuti isamamatire ku nkhungu yachitsulo panthawi yopaka, komanso nthawi yomweyo kupangitsa pamwamba pa pulasitiki kukhala yosalala komanso yokongola. Mafuta opaka omwe amagwiritsidwa ntchito nthawi zambiri amaphatikizapo stearic acid ndi mchere wake wa calcium ndi magnesium. Kuwonjezera pa zowonjezera zomwe zili pamwambapa, zinthu zoletsa moto, zinthu zotulutsa thovu, zinthu zoletsa kutentha, ndi zina zotero zitha kuwonjezeredwa ku pulasitiki.
Nthawi yotumizira: Disembala-03-2020