Nucleating tus neeg saib xyuas yog ib hom tshiab ua haujlwm ntxiv uas tuaj yeem txhim kho lub cev thiab lub zog ntawm cov khoom xws li pob tshab, nto gloss, tensile zog, rigidity, kub distortion kub, cuam tshuam tsis kam, creep resistance, thiab lwm yam los ntawm kev hloov cov crystallization cwj pwm ntawm resins. . Nws yog dav siv nyob rau hauv cov txheej txheem zus tau tej cov crystalline plastics tsis tiav xws li polyethylene thiab polypropylene hauv tsheb, khoom siv hauv tsev, khoom noj khoom haus, hluav taws xob, thiab kev kho mob. Piv txwv li, tus neeg sawv cev nucleating yog cov khoom siv tseem ceeb hauv kev tsim cov khoom muaj txiaj ntsig zoo xws li cov kua nplaum siab polypropylene, tshiab high-rigidity, high-toughness, thiab high-crystallinity polypropylene, β-crystalline polypropylene, thiab hloov cov ntaub ntawv polypropylene rau tsheb. nyias-walled applications. Los ntawm kev ntxiv cov tshuaj tshwj xeeb nucleating, resins nrog txhim kho pob tshab, rigidity, thiab toughness tuaj yeem tsim. Nrog rau kev nce ntxiv hauv kev tsim khoom hauv tsev ntawm cov khoom siv ua haujlwm siab polypropylene uas yuav tsum tau ntxiv cov nucleating cov neeg ua haujlwm thiab kev loj hlob sai hauv kev thov rau lub tsheb teeb pom kev zoo thiab lithium roj teeb cais, muaj peev xwm loj heev rau kev lag luam nucleating hauv.
Muaj ntau homcov tshuaj nucleating, thiab lawv cov khoom ua tau zoo txuas ntxiv txhim kho. Raws li cov ntaub ntawv sib txawv ntawm cov khoom siv lead ua los ntawm cov nucleating agents, lawv tuaj yeem muab faib ua α-crystalline nucleating agents thiab β-crystalline nucleating agents. Thiab α-crystalline nucleating cov neeg ua haujlwm tuaj yeem muab faib ntxiv rau hauv inorganic, organic, thiab polymer hom raws li lawv cov qauv sib txawv. Inorganic nucleating agents feem ntau suav nrog cov neeg ua haujlwm ntxov tsim nucleating xws li talc, calcium oxide, thiab mica, uas pheej yig thiab yooj yim kom tau txais tab sis muaj cov pob tshab tsis zoo thiab lub ntsej muag gloss. Organic nucleating agents mas muaj xws li carboxylic acid hlau ntsev, phosphate hlau ntsev, sorbitol benzaldehyde derivatives, thiab lwm yam. Ntawm lawv, sorbitol benzaldehyde derivatives yog tam sim no cov neeg laus laus nucleating agents, nrog rau kev ua tau zoo heev thiab tsis tshua muaj nqi, thiab tau dhau los ua ntau hom kev tsim, , thiab loj tshaj plaws-ntim hom nucleating cov neeg ua haujlwm ob leeg hauv tsev thiab thoob ntiaj teb. Polymer nucleating agents feem ntau yog high-melting-point polymeric nucleating agents, xws li polyvinylcyclohexane thiab polyvinylpentane. β-crystalline nucleating agents mas muaj ob hom: ib tug me me ntawm polycyclic tebchaw nrog quasi-planar qauv, thiab cov uas muaj xws li ib co dicarboxylic acids thiab oxides, hydroxides, thiab ntsev ntawm hlau los ntawm pab pawg neeg IIA ntawm lub periodic rooj. β-crystalline nucleating cov neeg ua haujlwm ua kom cov thermal deformation kub ntawm cov khoom thaum txhim kho lawv cov kev cuam tshuam.
Piv txwv ntawm cov khoom muaj nuj nqi thiab kev siv ntawm Nucleating Agents
| Cov khoom | Function Description | Daim ntawv thov |
| Transparent Nucleating Agent | Nws tuaj yeem txhim kho qhov pom tseeb ntawm cov resin, txo haze ntau tshaj 60%, thaum ua kom kub distortion kub thiab crystallization kub ntawm cov resin los ntawm 5 ~ 10 ℃, thiab txhim kho cov flexural modulus los ntawm 10% ~ 15%. Nws kuj shortens lub voj voog molding, txhim khu ntau lawm efficiency, thiab tswj cov khoom seem stability. | High Melt Index Polypropylene (los yog High MI Polypropylene) |
| Rigidifying Nucleating Agent | Nws tuaj yeem txhim kho cov cuab yeej cuab tam ntawm cov cob, nrog kev nce hauv flexural modulus thiab khoov lub zog ntawm ntau dua 20%, nrog rau qhov nce ntawm qhov kub ntawm qhov kub thiab txias ntawm 15 ~ 25 ℃. Kuj tseem muaj kev txhim kho zoo thiab sib npaug ntawm ntau yam xws li crystallization kub thiab cuam tshuam lub zog, uas ua rau kom sib npaug shrinkage thiab txo warpage deformation ntawm cov khoom. | High Melt Index Polypropylene, Tshiab High-Rigidity, High-Toughness, thiab High-Crystallization Polypropylene, Hloov Polypropylene Cov Khoom Siv rau Automotive Thin-Wall Daim Ntawv Thov |
| β-Crystalline Toughening Nucleating Agent | Nws tuaj yeem cuam tshuam qhov tsim ntawm β-crystalline polypropylene, nrog β-crystalline hloov pauv ntau dua 80%, txhim kho qhov cuam tshuam lub zog ntawm polypropylene cob, thiab kev txhim kho tuaj yeem ncav cuag ntau dua 3 zaug. | High Melt Index Polypropylene, Tshiab High-Rigidity, High-Toughness, thiab High-Crystallization Polypropylene, β-Crystalline Polypropylene |
Post lub sij hawm: Aug-23-2024