Kev siv cov yas yas hauv cov khoom siv polyurethane
Jun 02, 2021
Lub luag haujlwm tseem ceeb ntawm cov yas yas yog: txo cov viscosity ntawm cov khoom thiab pab kev sib xyaw; nyob twj ywm hauv cov khoom, ua kom cov khoom hloov tau yooj yim, ua kom cov elongation, txo qhov hardness, thiab txo cov brittleness; txo tus nqi; nyob rau hauv lub reactive polyurethane system, nws muaj peev xwm ncua lub lauj kaub lub neej. Kev ua haujlwm kub ntawm MOCA hnyav tuaj yeem siv rau hauv chav tsev kub kho, thiab lwm yam. Ib qho tsim nyog ntawm plasticizers nrog kev sib raug zoo tuaj yeem txhim kho cov khoom lag luam, thaum siv cov plasticizers tsis raug yuav ua rau kev ua haujlwm ntawm cov ntaub ntawv polymer.
Tshiab environmentally friendly plasticizer
Tam sim no, polyurethane ua npuas ncauj yog dav siv. Mos ua npuas ncauj yas yog siv rau ntau yam ntaub ntawv cushioning thiab suab rwb thaiv tsev ntaub ntawv rau rooj tog thiab tsheb; rigid foam plastics feem ntau yog siv rau cov khoom siv hauv tsev thaum tshav kub kub rwb thaiv tsev txheej, ru tsev rwb thaiv tsev thiab cov dej tsis muaj dej tsis zoo, cov ntaub ntawv rwb thaiv tsev, cov khoom siv hauv tsev, cov tub yees tsheb thiab cov khoom siv txias txias, thiab lwm yam .; semi-rigid foam plastics yog siv nyob rau hauv tsheb dashboards, kauj log, thiab lwm yam.
Muaj ntau hom ua npuas ncauj yas sib xyaw cov ntaub ntawv (ob lub ntsiab lus premix) nyob rau hauv kev ua lag luam, uas yog tsuas yog siv rau (txias curing) siab resilience ua npuas ncauj, semi-rigid ua npuas ncauj, casting thiab txau rigid ua npuas ncauj, thiab lwm yam Polyurethane elastomer muaj peev xwm muaj siab. elasticity thiab lub zog, zoo heev hnav tsis kam, roj kuj, qaug zog thiab kev co kuj nyob rau hauv ib tug ntau yam ntawm hardness, thiab yog hu ua "coj-resistant roj hmab".
Txawm hais tias cov zis ntawm polyurethane elastomer hauv cov khoom siv polyurethane yog me me, polyurethane elastomer muaj cov khoom zoo heev thiab tau siv dav hauv metallurgy, roj av, tsheb, ntxhia ua, dej txuag, textile, luam ntawv, kho mob, kev ua si, khoom noj khoom haus, kev tsim kho thiab lwm yam. industrial sectors.
Polyurethane nws tus kheej tuaj yeem hloov nws qhov nyuaj los ntawm kev kho cov khoom siv raw. Plasticizers yog siv nyob rau hauv polyurethane roj hmab tebchaw. Lub hom phiaj ntawm kev siv yog ua kom cov plasticity ntawm cov roj hmab sib txuas, txhim kho kev ua haujlwm thiab kev ua haujlwm kub ntawm cov roj hmab vulcanized, thiab txo qhov hardness ntawm cov roj hmab vulcanized. Tensile zog. Tus nqi ntawm plasticizer yuav tsum tsis txhob loj dhau, txwv tsis pub nws yuav txo qhov hnav tsis kam ntawm vulcanizate. Environmentally Friendly Plasticizer
Phthalates tuaj yeem siv rau hauv cov mos mos elastomers thiab muaj kev tsiv teb tsaws zoo heev.
Fatty acid diacid esters muaj qhov ua tau zoo txias thiab feem ntau yog siv rau hauv cov khoom uas xav tau qhov kub thiab txias, thiab tseem tuaj yeem siv los ua cov roj nplua nyeem kub.
Dioctyl terephthalate muaj cov khoom siv hluav taws xob zoo thiab ua haujlwm txias, tsis tshua muaj hluav taws xob, siab plasticizing efficiency dua li DOP, thiab cov ntim me me. Nws yog siv rau cov khoom uas muaj rwb thaiv tsev siab, extraction kuj, kub tsis kam thiab yooj. Nws yog tsim los ua cov yas yas rau polyurethane thiab polyvinyl chloride resin.
