Hauv plastics, additives ua lub luag haujlwm tseem ceeb hauv kev txhim kho thiab hloov kho cov khoom ntawm cov khoom. Nucleating agents thiab clarifying agents yog ob yam additives uas muaj lub hom phiaj sib txawv hauv kev ua tiav cov txiaj ntsig tshwj xeeb. Thaum 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 seb lawv pab txhawb rau cov khoom kawg.

Pib nrogcov tshuaj nucleating, cov additives no yog siv los ua kom cov txheej txheem crystallization ntawm plastics. Crystallization tshwm sim thaum cov saw hlau polymer tau teeb tsa hauv kev sib koom ua ke, ua rau muaj cov qauv nruj dua. Lub luag haujlwm ntawm tus neeg sawv cev nucleating yog los muab qhov chaw rau cov saw hlau polymer kom ua raws li, txhawb kev tsim cov siv lead ua thiab ua kom tag nrho cov crystallinity ntawm cov khoom. Los ntawm accelerating crystallization, nucleating agents txhim kho cov neeg kho tshuab thiab thermal zog ntawm cov yas, ua rau lawv nyuaj thiab kub-resistant.

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

Clarifiers, ntawm qhov tod tes, yog cov khoom siv ntxiv uas ua rau kom pom qhov pom tseeb ntawm cov yas los ntawm kev txo qis qis. Haze yog qhov tawg ntawm lub teeb nyob rau hauv ib yam khoom, uas ua rau muaj huab los yog translucent tsos. Lub luag haujlwm ntawm cov neeg ua kom pom tseeb yog hloov kho cov polymer matrix, txo qhov tsis xws luag thiab txo cov teeb meem tawg. Qhov no ua rau pom tseeb dua, cov ntaub ntawv pob tshab, uas yog qhov zoo tshaj plaws rau kev siv xws li ntim khoom, qhov muag qhov muag thiab cov lus qhia.

Ib qho ntawm feem ntau siv clarifying agents yog sorbitol, ib tug qab zib cawv uas kuj ua raws li ib tug nucleating neeg sawv cev. Raws li tus neeg saib xyuas kom meej, sorbitol pab tsim cov pob zeb me me, zoo txhais tau zoo hauv cov yas matrix. Cov crystals no txo ​​qhov tawg ntawm lub teeb, uas txo qis haze. Sorbitol feem ntau yog siv ua ke nrog lwm cov neeg ua kom pom tseeb xws li benzoin thiab triazine derivatives kom ua tiav qhov xav tau kom pom tseeb thiab pom tseeb ntawm cov khoom kawg.

Txawm hais tias ob qho tib si nucleating thiab clarifying agents muaj lub hom phiaj ntawm kev txhim kho cov khoom ntawm cov yas, nws yuav tsum tau muab sau tseg tias lawv cov txheej txheem ntawm kev ua txawv.Nucleating agentsua kom cov txheej txheem crystallization, yog li txhim kho cov khoom siv hluav taws xob thiab thermal, thaum cov neeg ua kom pom tseeb hloov kho cov polymer matrix kom txo tau lub teeb tawg thiab ua kom pom qhov pom tseeb.

Hauv kev xaus, nucleating agents thiab clarifying agents yog ib qho tseem ceeb additives nyob rau hauv lub teb ntawm plastics, thiab txhua additives muaj ib tug tshwj xeeb lub hom phiaj. Nucleating cov neeg ua haujlwm txhim kho cov txheej txheem crystallization, yog li txhim kho cov khoom siv hluav taws xob thiab thermal, thaum cov neeg ua kom pom tseeb txo qhov kub hnyiab thiab ua kom pom qhov pom tseeb. Los ntawm kev nkag siab txog qhov sib txawv ntawm ob tus neeg ua haujlwm no, cov tuam txhab tuaj yeem xaiv txoj cai additive kom ua tiav cov txiaj ntsig xav tau rau lawv cov khoom yas, txawm tias nws muaj zog ntxiv, tiv thaiv tshav kub lossis qhov pom tseeb.