Imichilo yokuvala uphawu ye-PVC isiyintandokazi yezicabha zensimbi zepulasitiki nemicu yokuvala amafasitela ngoba ayiqhekeki futhi kulula ukuyishisela. Kodwa eminyakeni engu-2-3 kuphela, inkinga yavela. Ukuhlukaniswa kwama-PVC plasticizers, inkinga enzima yezimboni zamazwe ngamazwe, kuboniswe ngokucacile emigqeni yokuvala i-PVC.
Ngenxa yokuhlukaniswa kwe-plasticizer, iphrofayili ingcoliswa yi-rubber strip, ubude bufinyeziwe, isigaba esiphukile sifinyeziwe, futhi izinkinga zokuvala uphawu ezimbi ziningi. Kodwa-ke, ukucutshungulwa kweshabhu elincane lesitayela samaShayina, ukuncishiswa kwezindleko zesitayela samaShayina, kanye nokuncintisana kwentengo ephansi kwesitayela samaShayina ngabakhiqizi bemicu yokuvala umnyango nefasitela kuye kwaholela ekusetshenzisweni kwamapulasitiki anesici kanye ne-PVC egaywe kabusha, eye yandisa izinkinga zayo yonke imboni yokuvala uphawu. Ukuphela komugqa wokuvala we-PVC kuyaqala ukuvela.
I-EPDM EPDM sealing strips Ekuqaleni kuka-2000, izwe lakhipha umyalelo womphakathi wokukhawulela ukusetshenziswa kwemichilo yokuvala ye-PVC ye-polyvinyl chloride, futhi yakhuthaza ukusetshenziswa kwemichilo yokuvala ye-EPDM EPDM kanye nemichilo yokuvala irabha ye-MVQ silicone. I-EPDM sealing strip, umugqa wokuvala wezinga eliphezulu osetshenziswa ezimotweni nasezitimeleni, ekugcineni usumukelwe imboni yezokwakha.
Eqinisweni, yayisetshenziswa kabanzi embonini yomnyango nefasitela ngemuva kuka-2002. Ngaleso sikhathi, iminyango namafasitela angena kancane kancane enkathini yama-alloys e-aluminium ephukile. I-EPDM yafana nemigqa yokuvala yezinga eliphezulu ngenxa yezakhiwo zayo eziphakeme zomzimba kanye nokumelana nokuguga okuhle. Ngo-2011, ethintekile amafutha omhlaba kanye nezinye izici, intengo ye-ethylene propylene yakhuphuka, futhi ubusika bezintambo zokuvala ze-EPDM zafika, ngakho ukuhlakanipha kwamaShayina kwafika, irabha ebuyiselwe yaqala ukusetshenziswa ngobuningi, futhi yonke imakethe ye-strip strip yayinesiphithiphithi. Ama-seal amahle kunzima ukuwathola. Umkhiqizi womugqa wokuvala umnyango newindi@门Window气气调板厂家Isifunda esithile e-China siyisisekelo semicu yasekhaya yokuvala, futhi cishe u-70% wemicu yokuvala yebhilidi le-EPDM yaseChina ivela kulesi sifunda. Kukhona umqashi owenza umsebenzi ofanayo kulesi sifunda, futhi u-70% wemicu yezwe yokuvala i-ethylene-propylene ivela kithi.
Umugqa wokuvala irabha we-Silicone awuyona into yakamuva kakhulu yokuvala imichilo, kodwa akunjalo. Irabha ye-Silicone inomlando wamashumi eminyaka e-China. Abakhiqizi bemigqa yokuvala umnyango newindi bayizintandokazi zenjoloba eminyakeni embalwa edlule, futhi bathambile kakhulu. Eminyakeni yamuva, izindleko ziye zehla kancane kancane, futhi kancane kancane ziye zasetshenziswa ekwakheni izimpawu.
Uma kuqhathaniswa nerabha ye-ethylene-propylene, inzuzo yerabha ye-silicone yokuvaleka ukuthi inokuncipha okungcono nokusebenza kwe-deformation kunerabha ye-ethylene-propylene, ngakho-ke ukusebenza kokuvala kuba ngcono, futhi kusukela kumgomo wokulingana kwezinga lokushisa, irabha ye-silicone ingakwazi ukumelana namazinga okushisa afika ku-300 ° C, futhi imelana ne-ethylene-propylene. Irabha isezingeni eliphakeme kakhulu lika-180°C. Ngaphansi kwezinga lokushisa elifanayo, impilo yerabha ye-silicone iphindwe kabili kune-ethylene propylene rubber, futhi impilo yesevisi yinde. Futhi ine-inertia enhle kakhulu ye-physiological, engeyona enobuthi, ayinambitheki, irabha ye-silicone nayo inokumelana nokushisa okuhle kakhulu, ukumelana nokubanda, izakhiwo ze-dielectric, ukumelana ne-ozone kanye nokumelana nokuguga komkhathi kanye neminye imisebenzi, umsebenzi ovelele wenjoloba ye-silicone ukusetshenziswa kokushisa okubanzi, ingasebenzisa umkhiqizi womnyango kanye nefasitela lokuvala uphawu isikhathi eside ku -60 ° C (noma izinga lokushisa elingaphansi kuka-250 ° C) ukuya +2 ° C (noma izinga lokushisa eliphansi). Ngakho-ke irabha ye-silicone iyisinqumo esihle sokwakha izimpawu esikhathini samanje.
Isikhathi sokuthumela: Sep-01-2023