Raws li ib qho ntawm tsib lub hom phiaj dav dav, polypropylene (PP) yog siv dav hauv txhua qhov chaw ntawm lub neej. Txawm li cas los xij, cov yam ntxwv flammable ntawm PP kuj txwv nws qhov chaw thov thiab cuam tshuam kev txhim kho ntxiv ntawm PP cov ntaub ntawv. Yog li ntawd, cov nplaim hluav taws kub nyhiab ntawm PP Hloov Kho tau ib txwm ua kom pom tseeb.
Flame retardant yog lub zog rau cov khoom siv hluavtaws polymer. Kev siv cov nplaim hluav taws kub hnyiab tuaj yeem siv rau cov khoom siv hluav taws xob hluav taws xob hluav taws xob, kom tsis txhob muaj cov khoom siv hluav taws xob thiab tiv thaiv kev sib kis ntawm hluav taws, thiab txhawb cov khoom siv hluavtaws kom muaj cov pa taws tua hluav taws, tiv thaiv tus kheej thiab nplaim hluav taws. Tam sim no, cov nplaim retardants feem ntau siv rau polypropylene feem ntau suav nrog hlau hydroxide nplaim retardants, boron-raws li nplaim retardants, silicon-raws li nplaim retardants, phosphorus-raws li nplaim retardants, nitrogen-based nplaim retardants, thiab intumescent nplaim retardants.
1. Hlau hydroxide nplaim retardant
Cov pa roj carbon activated nyob rau hauv cov hlau hydroxide nplaim retardant muaj ib tug loj cheeb tsam ntawm lub nto thiab yog nplua nuj nyob rau hauv kev ua hauj lwm pab pawg neeg, uas yuav ua tau zoo ua ke nrog cov hydroxyl pab pawg neeg ntawm cov sodium magnesium hydroxide hais, zoo deg polarity ntawm magnesium hydroxide thiab txo nws cov tshwm sim. . Qhov muaj peev xwm ntawm agglomeration txhim kho kev sib raug zoo ntawm sodium magnesium hydroxide nrog PP matrix, kom cov nplaim hluav taws kub nyhiab ntawm cov khoom yog txhim kho.
2. Boron nplaim retardant
Nyob rau hauv PP / BN @ MGO composite, vim cov txheej txheem txheej thiab alkylation hloov kho ntawm BN @ MGO nplaim retardant, nws alkyl saw grafting efficiency siab, thiab cov ntsiab lus carbon yuav enriched nyob rau saum npoo ntawm cov muab tub lim, uas ho txhim khu kev qha. Qhov kev sib raug zoo ntawm BN @ MGO nplaim taws retardant thiab PP lub cev ua rau nws muaj peev xwm faib tau zoo sib xws hauv PP matrix.
3. Silicon nplaim taws retardant
HNTs-Si nyob rau hauv silicon-raws li nplaim retardants tuaj yeem tswj cov qauv tubular nyob rau hauv qhov kub thiab txias, thiab tuaj yeem sib tw nrog cov thermally degraded PP saw los tsim ib "fibrous" tuab carbon txheej, uas zoo inhibits qhov kub ntawm PP. Thaum tshav kub kub, huab hwm coj thiab pa luam yeeb hloov mus.
4. Phosphorus nplaim retardant
Nyob rau hauv phosphorus-raws li nplaim retardants, sorbitol muaj ntau pawg hydroxyl, uas yog ib qho yooj yim los tsim ib tug carbonized txheej thaum combustion, thaum ammonium polyphosphate decomposes thaum rhuab los tsim phosphoric acid tebchaw, uas ntxiv txhim kho cov carbonization ntawm sorbitol, thiab tiam. ntawm carbon txheej yog ncua. Kev sib kis ntawm tshav kub, thiab kev sib cais ntawm cov pa oxygen, txhim kho cov nplaim hluav taws kub ntawm cov khoom.
5. Nitrogen nplaim retardant
MPP yuav tsim cov pa roj carbon monoxide (xws li NH3, NO thiab H2O) thiab qee cov phosphorus-muaj cov khoom siv thaum lub sij hawm combustion, thaum AP tuaj yeem tso tawm cov roj ntsha txhuas phosphate Al2 (HPO4) 3 thiab phosphine (PH3) gases ntawm qhov kub thiab txias, cov pa roj no tsis yog nws tuaj yeem dilute. flammable gases nyob rau hauv cov huab cua, thiab muaj peev xwm ua raws li ib tug gas shield rau saum npoo ntawm cov khoom, thiaj li txo combustion.
6. Intumescent nplaim retardant
NiCo2O4 muaj qhov zoo ntawm kev tswj cov morphology, thaj chaw loj tshwj xeeb, ntau qhov chaw ua haujlwm, thiab kev npaj yooj yim thiab ntau yam. Raws li cov nickel-based compound, NiCo2O4 muaj cov pa roj carbon catalytic zoo heev, uas tsis tsuas yog txo cov khoom siv hluav taws xob thiab txhim kho cov nplaim hluav taws.
