Qhov zoo ntawm BIBP crosslinking tus neeg saib xyuas thiab daim ntawv thov DCP

Oct 26, 2023 Tso lus

Organic peroxides tsis yog tsuas yog haum rau crosslinking roj hmab elastomers, tab sis kuj rau crosslinking thermoplastic plastics. Hauv kev lag luam, lawv tsuas yog siv rau crosslinking polyethylene thiab nws cov copolymer. Cov khoom siv polyethylene crosslinked nrog peroxides tsis tsuas yog tswj cov rwb thaiv tsev zoo, tab sis kuj muaj cov cua sov ua haujlwm siab thiab cov khoom siv kho tshuab thiab lub cev. Yog li ntawd, ntau tshaj 90% ntawm cov yas insulating siv rau cov xov hlau thiab cables yog styrene thiab nws cov copolymer crosslinked nrog peroxide. Tam sim no, feem ntau siv hom organic peroxide crosslinking tus neeg sawv cev yog dicumyl peroxide (DCP), uas muaj kev sib txuas ua haujlwm siab, tsis tshua muaj hluav taws xob, thiab zoo pob tshab thiab kub tsis kam ntawm cov khoom. Txawm li cas los xij, vim yog qhov decomposition ntawm DCP thaum lub sij hawm crosslinking txheej txheem, uas ua rau muaj teeb meem acetophenone rau tib neeg noj qab haus huv, muaj teeb meem ib puag ncig muaj kuab paug thaum lub sij hawm siv thiab kev ua hauj lwm, thiab cov cross-linked cov khoom muaj residual tsw.

BIBP cross-linking tus neeg sawv cev yog tus neeg sawv cev siab kawg thiab tshiab ib puag ncig tus phooj ywg sib txuas. Daim ntawv thov teb thiab kev ua tau zoo ntawm cov khoom yog qhov sib npaug rau DCP. Cov khoom no muaj kev sib txuas ua haujlwm siab, ua haujlwm zoo thaum tshav kub kub, tsis tshua muaj kub yooj, thiab siab deformation tsis kam ntawm cov khoom. BIPB crosslinking tus neeg sawv cev tuaj yeem siv los ua tus neeg sawv cev sib txuas rau cov roj hmab thiab cov yas xws li polyethylene (PE), ethylene vinyl acetate copolymer (xws li EVA ua npuas ncauj), chlorinated polyethylene roj hmab (CPE), ethylene propylene diene monomer (EPDM), chlorosulfonated polyethylene, tetrafluoroethylene roj hmab (TP-2), saturated hydrogenated nitrile roj hmab (HNBR), silicone roj hmab, thiab lwm yam. Nyob rau hauv tib lub crosslinking nyhuv, tus nqi ntawm BIPB crosslinking tus neeg sawv cev ntxiv yog hais txog 2/3 ntawm dicumyl peroxide (DCP). Tsis muaj ntxhiab tsw ntxhiab thaum ua haujlwm thiab hauv cov khoom tiav. Tshwj xeeb tshaj yog tsim rau silicone roj hmab moulded vulcanization nyob rau hauv tsev saj zawg zog hlau rwb thaiv tsev cross-linking thiab EVA ua npuas ncauj khoom, xws li roj hmab sheathed cables rau cua txias, EVA ua npuas ncauj cov khoom ua si, thiab lwm yam.

Qhov txiaj ntsig loj tshaj plaws ntawm BIBP ua tus neeg sawv cev sib txuas piv rau DCP yog tias thaum lub sij hawm sib txuas, DCP yuav tsim cov phenylethyl ketones nrog cov ntxhiab tsw. Cov ntxhiab tsw yuav nyob twj ywm hauv cov khoom sib txuas, thiab BIBP crosslinking tus neeg sawv cev tsis muaj qhov tsis zoo no. Yog li ntawd, nws yog hu ua "odorless DCP".

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