Yadda za a inganta yanayin juriya na roba?
Juriya ga tsufa na iska mai zafi ko tsufa na zafi yana ƙara zama mahimmanci, musamman a cikin aikace-aikacen mota inda aka fi amfani da sassan roba a wurare da aka rufe tare da yanayin yanayin zafi. Masana'antun kera motoci sun ji ƙara matsa lamba don ƙaddamar da tsawon rayuwar sabis don sassan robansu. Anaerobic zafin tsufa Properties da zafi da iska tsufa Properties ne daban-daban. Roba yana da mafi kyawun juriya na zafi, amma har yanzu bazai jure harin oxygen ba.
Lura: Waɗannan ƙa'idodin gwajin gaba ɗaya ƙila ba za su yi amfani da kowane takamaiman shari'a ba. Duk wani sauye-sauyen da zai iya inganta juriyar tsufa na iska ko juriya mai zafi zai shafi sauran kaddarorin, ko dai don mafi kyau ko mafi muni.
1. Perfluoroelastomer
Idan ana buƙatar kayan roba don samun kyakkyawan juriya na zafi, ya kamata ku zaɓi roba mai lalata. An ba da rahoton cewa zafin amfani da perfluoroelastomer ya kai 316 ℃.
2. Fluorine roba
FKM roba Fluorine yana da kyakkyawan juriya na zafi, kuma ana iya amfani dashi a yanayin zafi har zuwa 260 ℃. Domin kara ƙarfafa high zafin jiki juriya na fluorine roba, kana bukatar ka zabi da hakkin acid yarda (acid absorbent), kamar low aiki magnesium oxide, high aiki magnesium oxide, alli oxide, alli hydroxide, tutiya oxide, da dai sauransu Fluoroelastomer ta zafi resistant iska tsufa yi yana da kyau sosai, da amfani da zafin jiki na iya zama kamar yadda 200℃. Ta hanyar zabar bisphenol AF a matsayin tsarin vulcanization, yanayin zafi mai zafi na roba zai fi kyau. An yi amfani da shi a cikin yanayi mai tsauri na injin mai, zafin tsufa na juriya na ternary fluoroelastomer da aka yi daga vinylidene fluoride, tetrafluoroethylene da propylene ya fi na janar fluoroelastomer. Wannan shi ne saboda maye gurbin hexafluoropropylene ta hanyar propylene a cikin tsarin polymerization.
3, HNBR
Mafi girman matakin hydrogenation, mafi kyawun juriya na zafi na HNBR, saboda kusan babu haɗin haɗin kai biyu mara kyau akan babban sarkar da ba ta da ƙarfi. Wasu HNBRs har yanzu ana iya lalata su tare da sulfur saboda har yanzu suna da wasu shaidu biyu marasa cikakken ƙarfi. Duk da haka, idan vulcanized tare da peroxide, da zafi juriya na fili za a inganta. Don robar HNBR, TOTM na iya ba da mafi kyawun juriya na zafi fiye da DOP saboda ƙarancin ƙarancin ƙarfi da nauyin ƙwayoyin ƙwayoyin waɗannan masu filastik trioctyl.
4. Neoprene
W-type neoprene yana da mafi kyawun juriya na tsufa fiye da nau'in G-neoprene. Diphenylamine octanoate shine mafi kyawun antioxidant don neoprene, wanda zai iya inganta haɓakar zafi sosai.
5. EPDM
EPDM har yanzu zai sami kyakkyawan juriya na zafi a 125 ℃ bayan dacewa da dacewa. Amfani da peroxide vulcanized EPDM, na iya sa roba ya fi zafi juriya.
6. Low danko tururi lokaci hanya EPDM
High ethylene abun ciki da matsananci-low danko tururi lokaci EPDM, za a iya cika da babban adadin fillers, saboda high ethylene abun ciki, aiki ba ya bukatar shiga aiki da zafi-resistant iska tsufa m da guduro, har yanzu iya sa roba da kyau sarrafa Properties, don haka da ainihin zafi juriya na roba ne inganta.
7. Ka guji amfani da guduro mai styrene
Guji ƙara babban resin sitirene a cikin roba da ake amfani da shi a cikin matsanancin zafin jiki.
8. Talcum foda
A cikin EPDM tiyo roba, maye gurbin 40% na carbon baki tare da talcum foda, wanda zai iya inganta zafi tsufa juriya na roba. Wasu maki na talcum foda suna da fa'idodi masu ban sha'awa fiye da lãka da aka yi da su ko ba a kula da su ba a wannan batun.
9. High danko plasticizer
Daga cikin masu yin robobi, manyan ƙwanƙwasa filastik na iya ba da mafi kyawun juriya na tsufa fiye da ƙarancin ɗanɗanowar filastik. Saboda babban danko filastik yawanci yana da babban nauyin kwayoyin halitta, ba sauƙin canzawa ba, don haka kyakkyawan kwanciyar hankali da kyakkyawan juriya na zafi.
10.Feden man iri ga neoprene
Don yin neoprene ya sami mafi kyawun juriya, ana buƙatar man canola saboda yana da ƙananan danko, wanda ya sa roba ya kasance da ƙananan hysteresis da ƙananan rashin ƙarfi, wanda zai iya sa roba ya sami kyakkyawan juriya na tsufa.
11, m EV/Semi-tasiri SEV vulcanization tsarin
A cikin tsarin vulcanization mai tasiri ko rabin tasiri, rabon hanzari da sulfur yana da girma, wato 'high promotion and low sulfur system, with 'sulfur to the body' maimakon guda sulfur, a cikin wannan tsarin vulcanization, rabon guda sulfur bond da sau biyu sulfur bond a cikin vulcanized sulfur bond a cikin vulcanized rubber rabo daga cikin vulcanized rabo daga cikin vulcanized rabo daga cikin vulcanized rabo daga cikin vulcanized rabo. kuma nau'in sulfur guda biyu ya fi girma fiye da na nau'in sulfur mai yawa, sabili da haka, an inganta kwanciyar hankali na zafi na roba kuma an inganta juriya na zafi.
12. Zinc oxide
Vulcanization / sub-sulfuramide vulcanization tsarin na roba, cike da karin zinc oxide, zai iya ba da roba mafi kyau zafi tsufa Properties kuma mafi juriya ga post-sulfur.
13, Peroxide vulcanized EPDM roba
A cikin fili na EPDM na peroxide vulcanized, an zaɓi ZMTI a matsayin antioxidant, wanda zai iya ba da fili mafi girma modules da zafi juriya.
