izindaba

Njengezinto ezihlanganisiwe,i-resin ye-polyester engagcweleisetshenziswe kahle ekumbozeni, epulasitikini eliqiniswe ngefayibha yengilazi, ematsheni okwenziwa, emisebenzini yezandla, nakweminye imikhakha. Kodwa-ke, ukuba phuzi kombala kwama-resin angagcwali bekulokhu kuyinkinga kubakhiqizi. Ngokusho kochwepheshe, izimbangela ezivamile zokuphuzi kwama-resin angagcwali zifaka okulandelayo:

1. Ngesikhathi senqubo yokwenziwa kwe-esterification ye-resin engagcwalisiwe, ngenxa yokuguga okushisayo okubangelwa ukushisa okuphezulu, izinga lokushisa elijwayelekile le-esterification ye-resin engagcwalisiwe lingu-180 ~ 220 ° noma ngaphezulu, kuleli zinga lokushisa i-resin kulula ukuyishintsha ibe phuzi ngenxa yokuguga okushisayo, okuthinta ukubukeka kwemikhiqizo ye-resin.

2. Ukuphuzi okubangelwa ukuvezwa kwe-resin emisebeni ye-ultraviolet kubangelwa kakhulu ukuba khona kwezindandatho ze-benzene ku-resin (kufaka phakathi ama-aromatic dibasic acid/anhydride kanye nezindandatho ze-benzene ezilethwa yi-styrene), okungase kube ngenxa yokushiswa kwe-thermal kwama-aromatic compounds emazingeni okushisa aphezulu. Ukuwohloka, kuthambekele ekushintsheni kwe-elekthronikhi, okwenza i-resin ibe phuzi.

3. Enqubweni yokukhiqizwa kwe-resin, izinto zokusetshenziswa zivezwa ku-oxygen ngenxa yokusebenza kabi kokuvala kwedivayisi. Uchungechunge lwama-molecule lwe-polyester e-unsaturated evamile aluqukethe kuphela amaqembu e-ester, amaqembu e-meridian, namaqembu e-antelope, kodwa futhi luqukethe ama-double bond nama-rings aromatic. Ludlula ekuwohlokeni kwe-oxidative ekushiseni, futhi ukusebenza okusobala ukuthi umbala we-resin uphenduka ophuzi.

4. Ithonya lezithasiselo ezifana nama-antioxidants, ama-polymerization inhibitors, ama-curing agents, njll. Ama-antioxidant e-amine aguqulwa kalula abe ama-radicals amahhala e-nitrooxide ukuze afake umbala kumkhiqizo. Ama-polymerization inhibitors asetshenziswa kakhulu, njenge-hydroquinone, yi-Oxidation ibe ama-quinone lapho kukhona ama-quinone, wona ngokwawo anombala, ngaleyo ndlela athinta umbala we-resin. Abanye abakhiqizi bama-curing agents basasebenzisa izinhlelo ze-acyl peroxide-tertiary amine kanye nezinhlelo zensipho zensimbi ze-ketone peroxide. I-resin enombala, elula ukuyifaka umbala.

Yiqiniso, kunezinye izizathu ezibangela ukuba i-resin ibe phuzi. Ngokuvamile, i-thermal oxygen kanye nemisebe ye-ultraviolet yizona zizathu eziyinhloko zokuphuzi. I-saturated dibasic acid (noma i-acid anhydride) isetshenziswa esikhundleni se-aromatic dibasic acid (noma i-acid anhydride), nakuba ingasetshenziswa ngezinga elithile, umbala we-resin ungenziwa ube lula, kodwa uma ucabangela izici ezahlukahlukene ezifana nokusebenza kwe-resin kanye nezindleko, le ndlela ayifaneleki.

Ngokusho kochwepheshe, ngaphezu kokugcwalisa igesi engasebenzi enqubweni yokukhiqiza nokugcina ukuze kuvinjelwe ukuthintana nomoya-mpilo ngangokunokwenzeka, indlela ephumelela kakhulu ukufaka ama-antioxidants kanye nama-ultraviolet absorbers, okungavimbela ngempumelelo ukuphuzi kwe-polyester ephuzile. Izixazululo ezinconywe ngochwepheshe zokulwa nokuphuzi kwama-resins angagcwalisiwe yilezi:

Kukhethwa ama-antioxidants angenawo ama-amine, kanti ama-antioxidants ayisisekelo kanye nasizayo asetshenziswa ngokuhlanganiswa. Ama-antioxidants ayisisekelo ngokuvamile ama-phenol avinjiwe, angabamba ama-free radicals e-peroxide; ama-antioxidants asizayo angama-phosphites, okuthi ngenkathi ebolisa i-hydroperoxide, ingaphinde ikhiphe ama-ion ensimbi ukuvimbela i-resin ekushintsheni kombala we-oxidative. Uma ufuna ukuthuthukisa ukumelana nokuphuzi kanye nokumelana nesimo sezulu, kunconywa ukuthi wengeze i-UV absorber. Ukwengeza i-UV absorber kungavimbela ngempumelelo isimo sokuphuzi kwezinto ze-polymer ngaphansi kwesenzo semisebe ye-ultraviolet, futhi kuhlinzeke ngesivikelo esihle kakhulu kumkhiqizo, kuvimbele ngempumelelo ukunciphisa ukukhanya, ukukhiqizwa kwemifantu, amabhamuza, kanye ne-delamination kungathuthukisa kakhulu ukumelana nesimo sezulu somkhiqizo, futhi kunomphumela omuhle wokubambisana uma kusetshenziswa kanye nama-antioxidants. Vele, ukusetshenziswa kwama-antioxidants kanye nama-UV absorber akukwazi ukuxazulula inkinga yokuphuzi, kodwa ngaphakathi kobubanzi obuthile, kusengakwazi ukuvimbela ngempumelelo ukuphuzi kwemikhiqizo ye-polyester engagcwalisiwe, kugcine i-watercolor yomkhiqizo icacile, futhi kuthuthukise ikhwalithi yomkhiqizo.

Okwethuama-resin e-polyester angagcwelezitholakala kumamodeli ahlukahlukene, kanye nama-resins angephuzi, kanje:

Siphinde sikhiqizei-fiberglass eqondile ehambahambayo,omata be-fiberglass, i-fiberglass mesh, futhiukuzulazula okulukiwe kwe-fiberglass.

Xhumana nathi:

Inombolo yocingo: +8602367853804

Email:marketing@frp-cqdj.com

Iwebhu: www.frp-cqdj.com