izindaba

Njengento ehlanganisiwe,unsaturated polyester resinisetshenziswe kahle ekukhoneni, amapulasitiki aqiniswe nge-fiber fiber, amatshe okwenziwa, imisebenzi yezandla, neminye imikhakha.Kodwa-ke, ukuphuzi kombala kwama-resin angasetshenzisiwe bekulokhu kuyinkinga kubakhiqizi.Ngokusho kochwepheshe, izimbangela ezivamile zokuphuzi kwe-resin unsaturated zihlanganisa okulandelayo:

1. Ngesikhathi senqubo ye-esterification synthesis ye-resin unsaturated, ngenxa yokuguga okuphuzi okubangelwa ukushisa okuphezulu, izinga lokushisa elijwayelekile le-esterification le-resin unsaturated liyi-180 ~ 220 ° noma ngaphezulu, kulokhu kushisa i-resin kulula ukuphenduka ibe phuzi ngenxa. ekugugeni okushisayo, okuthinta ukubukeka kwemikhiqizo ye-resin.

2. Ukubaphuzi okubangelwa ukuchayeka kweresin emisebeni ye-ultraviolet ikakhulukazi kubangelwa ukuba khona kwezindandatho ze-benzene kunhlaka (okuhlanganisa ama-aromatic dibasic acid/anhydrides namaringi e-benzene ethulwe yi-styrene), okungenzeka kube ngenxa yokushiswa kwe-oxidation yephunga elimnandi. ama-compounds emazingeni okushisa aphezulu.Ukuwohloka, kuthambekele ekuguqukeni kwe-elekthronikhi, okwenza i-resin ibe phuzi.

3. Enqubweni yokukhiqizwa kwe-resin, izinto zokusetshenziswa zivezwa umoya-mpilo ngenxa yokusebenza kabi kokuvalwa kwedivayisi.Iketango lamangqamuzana e-polyester evamile engagcwalisiwe ayiqukethe kuphela amaqembu e-ester, amaqembu e-meridian, namaqembu e-antelope, kodwa futhi namabhondi aphindwe kabili namasongo anuka kamnandi.Ithola ukuwohloka kwe-oxidative eshisayo, futhi ukusebenza okusobala ukuthi umbala we-resin uphenduka ophuzi.

4. Ithonya lezithasiselo ezifana nama-antioxidants, i-polymerization inhibitors, ama-ejenti okwelapha, njll. Ama-antioxidants e-amine aguqulwa kalula abe ama-radicals mahhala we-nitroxide ukuze afake umbala womkhiqizo.Ama-polymerization inhibitors asetshenziswa kakhulu, njenge-hydroquinone, ayi-Oxidation ibe amaquinone phambi kwama-quinone, wona ngokwawo anombala, ngaleyo ndlela athinte umbala we-resin.Abanye abakhiqizi bezinto ezelaphayo basasebenzisa izinhlelo ze-acyl peroxide-tertiary amine kanye nezinhlelo zensipho yensimbi ye-ketone peroxide.I-resin enombala, elula ukuyifaka umbala.

Yiqiniso, kunezinye izizathu ezenza i-resin ibe phuzi.Ngokuvamile, umoya-mpilo oshisayo kanye nemisebe ye-ultraviolet yizona zizathu eziyinhloko zokuphuzi.I-saturated dibasic acid (noma i-acid anhydride) isetshenziswa esikhundleni se-aromatic dibasic acid (noma i-asidi anhydride), nakuba ingasetshenziswa ngezinga elithile, umbala we-resin ungenziwa ube lula, kodwa uma kucatshangelwa izici ezihlukahlukene ezifana nokusebenza kwe-resin kanye nokusebenza kwe-resin. izindleko, le ndlela ayilungile.

Ngokusho kochwepheshe, ngaphezu kokugcwalisa igesi ye-inert ekukhiqizeni nasekugcinweni kwenqubo yokuvimbela ukuthintana ne-oksijini ngangokunokwenzeka, indlela ephumelela kakhulu yokwengeza ama-antioxidants nama-absorber ultraviolet, okungavimbela ngokuphumelelayo ukuphuzi kwe-polyester ephuzile.Izixazululo ezinconywe ngochwepheshe zokulwa nokuphuzi zama-resin angagcwele yilezi:

Ama-Antioxidants angenawo ama-amine akhethiwe, futhi ama-antioxidants ayinhloko nasizayo asetshenziswa ngokuhlangene.Ama-antioxidants ayinhloko ngokuvamile ama-phenols avinjiwe, angabamba ama-radicals mahhala e-peroxide;ama-antioxidant asizayo angama-phosphite, okuthi Nakuba i-hydroperoxide ibola, ingaphinda ihlaziye ama-ion ensimbi ukuvimbela inhlaka ekushintsheni kombala we-oxidative.Uma ufuna ukuthuthukisa ngokwengeziwe ukumelana nokuphuzi kanye nokumelana nesimo sezulu, kutuswa ukuthi wengeze isibambisi se-UV.Ukwengeza i-absorber ye-UV kungavimbela ngokuphumelelayo ukwenzeka okuphuzi kwezinto ze-polymer ngaphansi kwesenzo semisebe ye-ultraviolet, futhi kunikeze isivikelo esihle kakhulu kumkhiqizo, ukuvimbela ngokuphumelelayo Ukunciphisa isicwebezelisi, ukukhiqizwa kokuqhekeka, ama-bubbles, kanye ne-delamination kungathuthukisa kakhulu ukumelana nesimo sezulu. yomkhiqizo, futhi unomphumela omuhle we-synergistic uma usetshenziswa kanye nama-antioxidants.Vele, ukusetshenziswa kwama-antioxidant nama-absorbers we-UV akukwazi ukuxazulula inkinga yokuba phuzi, kepha phakathi kwebanga elithile, kusengakwazi ukuvimbela ngempumelelo ukuphuzi kwe-oxidative kwemikhiqizo ye-polyester engagcwalisiwe, kugcine umbala wamanzi womkhiqizo usobala, futhi uthuthukise ikhwalithi yomkhiqizo.ibanga.

Eyethuunsaturated polyester resinsatholakala kumamodeli ahlukahlukene, kanye nama-resin angaphuzi, kanje:

Siphinde sikhiqizei-fiberglass i-roving eqondile,amacansi e-fiberglass, I-fiberglass mesh, futhifiberglass nokwelukiweyo roving.

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