Gutegura nibiranga polyurethane igice cya-rigid ifuro kubikorwa byimodoka nyinshi.
Ukuboko kwimbere imbere yimodoka nigice cyingenzi cya cab, igira uruhare rwo gusunika no gukurura urugi no gushyira ukuboko kwumuntu mumodoka. Mugihe habaye ibyihutirwa, mugihe imodoka nigongana ryintoki, polyurethane yoroshye yintoki kandi yahinduwe PP (polypropylene), ABS (polyacrylonitrile - butadiene - styrene) nibindi bikoresho bya pulasitike bikomeye, birashobora gutanga ubuhanga bworoshye na buffer, bityo bikagabanya imvune. Intoki za polyurethane zoroshye zishobora gutanga ikiganza cyiza hamwe nuburyo bwiza bwubuso, bityo bikazamura ubwiza nubwiza bwa cockpit. Kubwibyo, hamwe niterambere ryinganda zitwara ibinyabiziga no kunoza ibyo abantu bakeneye kubikoresho byimbere, ibyiza bya polyurethane yoroshye ifuro mumaboko yimodoka bigenda bigaragara cyane.
Hariho ubwoko butatu bwa polyurethane yoroshye yintoki: kwihanganira ifuro ryinshi, kwifata ubwinshi hamwe nigice cya kabiri. Ubuso bwinyuma bwamaboko maremare yihanganira uruhu rwa PVC (polyvinyl chloride), naho imbere ni polyurethane ifata imbaraga nyinshi. Inkunga ya ifuro irakomeye cyane, imbaraga ni nkeya, kandi gufatana hagati yifuro nuruhu birahagije. Intoki yifitemo uruhu ifite uruhu runini rwuruhu, igiciro gito, urwego rwo hejuru rwo kwishyira hamwe, kandi rukoreshwa cyane mumodoka yubucuruzi, ariko biragoye kuzirikana imbaraga zubuso hamwe nibyiza muri rusange. Semi-rigid armrest itwikiriwe nuruhu rwa PVC, uruhu rutanga gukorakora neza no kugaragara, kandi ifuro ryimbere ryimbere rifite ibyiyumvo byiza, birwanya ingaruka, kwinjiza ingufu hamwe no gusaza, bityo rero birakoreshwa cyane mugukoresha imodoka itwara abagenzi imbere.
Muri iyi nyandiko, formulaire yibanze ya polyurethane igice cya-rigid ifuro yimodoka yimodoka yarateguwe, kandi iterambere ryayo ryizwe hashingiwe.
Igice cyubushakashatsi
Ibikoresho by'ibanze
Polyether polyol A (hydroxyl agaciro 30 ~ 40 mg / g), polymer polyol B (hydroxyl agaciro 25 ~ 30 mg / g): Wanhua Chemical Group Co, LTD. MDI yahinduwe [diphenylmethane diisocyanate, w (NCO) ni 25% ~ 30%], cataliste ikomatanya, ikwirakwiza amazi (Agent 3), antioxydeant A: Wanhua Chemical (Beijing) Co, LTD., Maitou, nibindi.; Gukwirakwiza ibishishwa (Umukozi 1), gukwirakwiza amazi (Agent 2): Byke Chemical. Ibikoresho fatizo byavuzwe haruguru ni urwego rwinganda. Uruhu rwa PVC: Changshu Ruihua.
Ibikoresho n'ibikoresho nyamukuru
Ubwoko bwa Sdf-400 bwihuta bwivanga, ubwoko bwa AR3202CN buringaniza bwa elegitoronike, ifumbire ya aluminiyumu (10cm × 10cm × 1cm, 10cm × 10cm × 5cm), itanura ryamashanyarazi ya 101-4AB, imashini ya KJ-1065 imashini ya tension ya 501A thermostat.
Gutegura formulaire yibanze hamwe nicyitegererezo
Ifatizo ryibanze rya polyurethane ifuro yerekana igice cya 1.
Gutegura imiterere yikigereranyo cyikigereranyo: compte polyether (A material) yateguwe ukurikije formulaire yo gushushanya, ivanze na MDI yahinduwe muburyo runaka, ikomatanya nigikoresho cyihuta cyane (3000r / min) kuri 3 ~ 5s , hanyuma asuka mubibumbano bihuye nifuro, hanyuma akingura ifumbire mugihe runaka kugirango abone icyitegererezo cya polyurethane igice cya kabiri.
Gutegura icyitegererezo cyo guhuza imikorere yikizamini: urwego rwuruhu rwa PVC rushyirwa murupapuro rwo hasi rwibibumbano, hamwe na polyether hamwe hamwe na MDI yahinduwe ivangwa mukigereranyo, ikangurwa nigikoresho cyihuta cyihuta (3 000 r / min ) kuri 3 ~ 5 s, hanyuma igasukwa hejuru yuruhu, hanyuma ifunga rigafungwa, kandi ifuro ya polyurethane hamwe nuruhu ibumbabumbwa mugihe runaka.
Ikizamini cyimikorere
Ibikoresho bya mashini: 40% CLD (gukomera kwikomye) ukurikije ikizamini gisanzwe cya ISO-3386; Imbaraga zingana no kurambura kuruhuka bigeragezwa ukurikije ISO-1798; Imbaraga zamarira zirageragezwa ukurikije ISO-8067. Imikorere yo guhuza: Imashini ya elegitoroniki yisi yose ikoreshwa mugukuraho uruhu nifuro 180 ° ukurikije igipimo cya OEM.
Imikorere yubusaza: Gerageza gutakaza ibintu byubukanishi hamwe nubusabane nyuma yamasaha 24 yo gusaza kuri 120 ℃ ukurikije ubushyuhe busanzwe bwa OEM.
Ibisubizo n'ibiganiro
Umutungo wa mashini
Muguhindura igipimo cya polyether polyol A na polymer polyol B muburyo bwibanze, hasuzumwe ingaruka za dosiye zitandukanye za polyether kumiterere yubukanishi bwa polyurethane ifuro ya kabiri, nkuko bigaragara mu mbonerahamwe ya 2.
Birashobora kugaragara mubisubizo biri mu mbonerahamwe ya 2 ko igipimo cya polyether polyol A na polymer polyol B gifite ingaruka zikomeye kumiterere yubukorikori bwa polyurethane. Iyo igipimo cya polyether polyol A na polymer polyol B cyiyongereye, kurambura kuruhuka byiyongera, ubukana bwo kwikuramo bugabanuka kurwego runaka, kandi imbaraga zingutu nimbaraga zo kurira zihinduka bike. Urunigi rwa molekile ya polyurethane igizwe ahanini nigice cyoroshye nigice gikomeye, igice cyoroshye kiva muri polyol nigice gikomeye kiva mububiko bwa karbamate. Ku ruhande rumwe, uburemere bwa molekuline ugereranije na hydroxyl agaciro ka polyole zombi ziratandukanye, kurundi ruhande, polymer polyol B ni polyether polyol yahinduwe na acrylonitrile na styrene, kandi gukomera kwicyiciro cyumunyururu byateye imbere bitewe nu kubaho kw'impeta ya benzene, mugihe polymer polyol B irimo ibintu bito bya molekile, byongera ubwinshi bwifuro. Iyo polyether polyol A ari ibice 80 na polymer polyol B nibice 10, imiterere yubukanishi bwuzuye ifuro iba nziza.
Guhambira umutungo
Nkigicuruzwa gifite inshuro nyinshi zikanda, intoki zizagabanya cyane ihumure ryibice niba ifuro nuruhu rwuruhu, bityo rero birasabwa guhuza imikorere ya polyurethane ifuro nuruhu. Hashingiwe ku bushakashatsi bwavuzwe haruguru, hiyongereyeho imiti itandukanye ikwirakwiza kugira ngo isuzume imiterere y’ifuro n’uruhu. Ibisubizo bigaragara mu mbonerahamwe ya 3.
Birashobora kugaragara kuva ku mbonerahamwe ya 3 ko imiti itandukanye ikwirakwiza igira ingaruka zigaragara ku mbaraga zo gukuramo hagati yifuro nuruhu: Gusenyuka kwifuro bibaho nyuma yo gukoresha inyongeramusaruro 2, zishobora guterwa no gufungura cyane ifuro nyuma yo kongeramo inyongeramusaruro. 2; Nyuma yo gukoresha inyongeramusaruro 1 na 3, imbaraga zo kwambura icyitegererezo ntizifite ubwiyongere runaka, kandi imbaraga zo kwambura inyongeramusaruro 1 ziri hejuru ya 17% ugereranije n’icyitegererezo cyambaye ubusa, kandi imbaraga zo kwambura inyongera 3 ni hafi 25% hejuru yicyitegererezo cyubusa. Itandukaniro riri hagati yinyongera 1 ninyongeramusaruro 3 riterwa ahanini nubudasa bwubushuhe bwibintu bigize ibintu hejuru. Muri rusange, kugirango dusuzume ububobere bwamazi yibikomeye, guhuza Angle nikintu cyingenzi cyo gupima ubuso bwubuso. Kubwibyo, guhuza Inguni hagati yibikoresho hamwe nuruhu nyuma yo kongeramo ibice bibiri byavuzwe haruguru byageragejwe, ibisubizo byerekanwe mubishusho 1.
Birashobora kugaragara kuva ku gishushanyo cya 1 ko guhuza Inguni yubusa ari nini cyane, ni 27 °, naho guhuza Angle ya agent auxiliant 3 ni ntoya, ni 12 ° gusa. Ibi birerekana ko gukoresha inyongeramusaruro 3 bishobora kuzamura ubushuhe bwibintu bigize uruhu hamwe nuruhu kurwego runini, kandi biroroshye gukwirakwira hejuru yuruhu, bityo gukoresha inyongeramusaruro 3 bifite imbaraga zikomeye zo gukuramo.
Umutungo ushaje
Ibicuruzwa bya Handrail bikanda mumodoka, inshuro nyinshi izuba riva ni ryinshi, kandi imikorere yo gusaza nikindi gikorwa cyingenzi polyurethane igice cya-rigid handrail ifuro igomba gutekereza. Kubwibyo, gusaza imikorere yuburyo bwibanze bwarageragejwe kandi ubushakashatsi bwo kunoza bwakozwe, ibisubizo byagaragaye mu mbonerahamwe ya 4.
Mugereranije amakuru ari mu mbonerahamwe ya 4, urashobora gusanga imiterere yubukanishi hamwe nuburyo bwo guhuza imiterere yibanze bigabanuka cyane nyuma yubusaza bwumuriro kuri 120 ℃: nyuma yo gusaza kuri 12h, gutakaza imitungo itandukanye usibye ubucucike (kimwe hepfo) ni 13% ~ 16%; Gutakaza imikorere yo gusaza 24h ni 23% ~ 26%. Byerekanwe ko ubushyuhe bwo gusaza imitungo yibanze ntabwo ari nziza, kandi imitungo ishaje yubushyuhe bwa formula yumwimerere irashobora kunozwa neza wongeyeho A urwego rwa antioxydeant A kuri formula. Mubihe bimwe byubushakashatsi nyuma yo kongeramo antioxydeant A, gutakaza imitungo itandukanye nyuma ya 12h byari 7% ~ 8%, naho gutakaza imitungo itandukanye nyuma ya 24h byari 13% ~ 16%. Kugabanuka kwimiterere yubukanishi biterwa ahanini nuruhererekane rwurunigi rwatewe no kuvunika kwa chimique hamwe na radicals yubusa ikora mugihe cyo gusaza k'ubushyuhe, bikavamo impinduka zifatika mumiterere cyangwa imitungo yibintu byumwimerere. Ku ruhande rumwe, kugabanuka kwimikorere yo guhuza biterwa no kugabanuka kwimiterere yubukanishi bwifuro ubwayo, kurundi ruhande, kubera ko uruhu rwa PVC rurimo umubare munini wa plasitiki, kandi plastisike yimukira hejuru mugihe cyibikorwa ya ogisijeni yumuriro ushaje. Kwiyongera kwa antioxydants birashobora kunoza imiterere yubusaza bwumuriro, cyane cyane ko antioxydants ishobora gukuraho radicals nshya yubusa, gutinda cyangwa kubuza inzira ya okiside ya polymer, kugirango igumane imiterere yumwimerere ya polymer.
Imikorere yuzuye
Ukurikije ibisubizo byavuzwe haruguru, formulaire nziza yarakozwe kandi imitungo yayo itandukanye irasuzumwa. Imikorere ya formula yagereranijwe nubwa polyurethane rusange ya rebound handrail ifuro. Ibisubizo bigaragara mu mbonerahamwe ya 5.
Nkuko bigaragara ku mbonerahamwe ya 5, imikorere yuburyo bwiza bwa semi-rigid polyurethane ifuro ifitemo ifu ifite inyungu zimwe na zimwe zifatizo zifatizo nizisanzwe, kandi ni ngirakamaro, kandi birakwiriye gukoreshwa muburyo bukomeye bwo gukora.
Umwanzuro
Guhindura ingano ya polyether hamwe no guhitamo ibyuya byujuje ubuziranenge hamwe na antioxydeant birashobora guha igice cya polyurethane ifuro igice cyiza cyane cyumukanishi, ibyiza byo gusaza neza nibindi nibindi. Ukurikije imikorere myiza yifuro, iki gicuruzwa cyinshi cya polyurethane igice cya-rigid ibicuruzwa gishobora gukoreshwa mubikoresho byimodoka nka handrail hamwe nameza yibikoresho.
Igihe cyo kohereza: Nyakanga-25-2024