Hauv cov yas, cov khoom ntxiv ua lub luag haujlwm tseem ceeb hauv kev txhim kho thiab hloov kho cov yam ntxwv ntawm cov ntaub ntawv. Cov neeg sawv cev nucleating thiab cov neeg sawv cev clarifying yog ob qho khoom ntxiv uas muaj lub hom phiaj sib txawv hauv kev ua tiav cov txiaj ntsig tshwj xeeb. Txawm hais tias lawv ob leeg pab txhim kho kev ua tau zoo ntawm cov khoom yas, nws yog ib qho tseem ceeb kom nkag siab txog qhov sib txawv ntawm ob tus neeg sawv cev no thiab lawv pab li cas rau cov khoom kawg.

Pib nrogcov neeg sawv cev nucleating, cov tshuaj ntxiv no yog siv los ua kom cov txheej txheem crystallization ntawm cov yas ua haujlwm sai dua. Crystallization tshwm sim thaum cov saw hlau polymer tau teeb tsa ua ib qho kev teeb tsa, ua rau muaj cov qauv khov kho dua. Lub luag haujlwm ntawm tus neeg sawv cev nucleating yog los muab qhov chaw rau cov saw hlau polymer kom lo rau, txhawb kev tsim cov siv lead ua thiab ua rau tag nrho cov crystallinity ntawm cov khoom siv. Los ntawm kev ua kom cov siv lead ua sai dua, cov neeg sawv cev nucleating txhim kho cov khoom siv kho tshuab thiab thermal ntawm cov yas, ua rau lawv nyuaj dua thiab tiv taus cua sov ntau dua.

Ib qho ntawm cov neeg sawv cev nucleating uas siv ntau yog talc, ib yam khoom uas paub txog nws lub peev xwm los ua kom muaj crystal tsim. Talc ua haujlwm ua tus neeg sawv cev nucleating, muab cov chaw nucleation rau cov saw polymer los teeb tsa ib puag ncig. Nws ntxiv ua rau muaj kev nce ntxiv ntawm crystallization thiab cov qauv crystal zoo dua, ua rau cov khoom siv muaj zog dua thiab ruaj khov dua. Nyob ntawm qhov xav tau tshwj xeeb thiab cov yam ntxwv ntawm cov khoom yas, lwm cov neeg sawv cev nucleating xws li sodium benzoate, benzoic acid thiab cov ntsev hlau kuj tseem siv tau.

Cov tshuaj ua kom pom tseeb, ntawm qhov tod tes, yog cov khoom ntxiv uas ua rau kom pom tseeb ntawm cov yas los ntawm kev txo cov pa phem. Pa phem yog qhov tawg ntawm lub teeb hauv cov khoom siv, ua rau pom tseeb lossis pom tseeb. Lub luag haujlwm ntawm cov neeg sawv cev ua kom pom tseeb yog hloov kho cov polymer matrix, txo qhov tsis zoo thiab txo cov teebmeem tawg ntawm lub teeb. Qhov no ua rau cov khoom siv meej dua, pob tshab dua, uas yog qhov zoo tshaj plaws rau cov ntawv thov xws li ntim khoom, cov iav kho qhov muag thiab cov zaub.

Ib qho ntawm cov tshuaj uas siv ntau tshaj plaws yog sorbitol, ib hom cawv qab zib uas kuj ua haujlwm ua tus neeg sawv cev nucleating. Ua tus neeg sawv cev clarifying, sorbitol pab tsim cov khoom siv me me, zoo-txhais hauv cov yas matrix. Cov khoom siv no txo ​​qhov kev tawg ntawm lub teeb, uas txo qhov haze. Sorbitol feem ntau siv ua ke nrog lwm cov neeg sawv cev clarifying xws li benzoin thiab triazine derivatives kom ua tiav qhov kev pom tseeb thiab kev pom tseeb ntawm cov khoom kawg.

Txawm hais tias ob qho tib si nucleating thiab clarifying agents muaj lub hom phiaj sib xws ntawm kev txhim kho cov khoom ntawm cov yas, nws yuav tsum tau sau tseg tias lawv cov txheej txheem ntawm kev ua haujlwm sib txawv.Cov neeg sawv cev nucleatingua kom cov txheej txheem crystallization sai dua, yog li txhim kho cov khoom siv kho tshuab thiab thermal, thaum cov neeg sawv cev clarifying hloov kho cov polymer matrix kom txo cov teeb scattering thiab ua kom pom tseeb dua.

Xaus lus, cov neeg sawv cev nucleating thiab cov neeg sawv cev clarifying yog cov khoom ntxiv tseem ceeb hauv kev lag luam yas, thiab txhua yam khoom ntxiv muaj lub hom phiaj tshwj xeeb. Cov neeg sawv cev nucleating txhim kho cov txheej txheem crystallization, yog li txhim kho cov khoom siv kho tshuab thiab thermal, thaum cov neeg sawv cev clarifying txo cov pa phem thiab ua kom pom tseeb dua. Los ntawm kev nkag siab txog qhov sib txawv ntawm ob tus neeg sawv cev no, cov chaw tsim khoom tuaj yeem xaiv cov khoom ntxiv kom raug kom ua tiav qhov tshwm sim xav tau rau lawv cov khoom yas, txawm tias nws yog kev ua kom muaj zog ntxiv, tiv taus cua sov lossis pom tseeb dua.