TPR ili ndi ubwino wotsatirawu: (1) Ikhoza kusinthidwa ndi makina opangira thermoplastic, monga jekeseni, jekeseni wa extrusion, kuwombera, kuponderezana, ndi nkhungu kutengerapo;(2) Ikhoza kutenthedwa ndi makina opangira jakisoni wa mphira, ndipo nthawiyo ikhoza kufupikitsidwa kuchokera pa 20min mpaka osachepera 1min;(3) Ikhoza kuumbidwa ndikusinthidwa ndi makina osindikizira, ndikuthamanga mofulumira komanso nthawi yochepa ya vulcanization;(4) Zinyalala zomwe zimapangidwira popanga (kuthawa ma burrs ndi mphira wochotsa zinyalala) ndi zinyalala zomaliza zitha kubwezeredwa mwachindunji kuti zigwiritsidwenso ntchito: (5) Zinthu zakale za TPR zitha kusinthidwanso ndikugwiritsiridwanso ntchito kuchepetsa kuipitsidwa kwa chilengedwe ndikukulitsa. gwero la kukonzanso zinthu;(6) Palibe vulcanization chofunika kupulumutsa mphamvu.Tengani mphamvu yogwiritsira ntchito mphamvu yopangira payipi yothamanga kwambiri monga chitsanzo: 188MJ / kg ya rabara ndi 144MJ / kg ya TPR, yomwe ingapulumutse mphamvu zoposa 25%;(7) Kudzilimbitsa nokha ndikwabwino, ndipo chilinganizocho chimakhala chosavuta kwambiri, kotero kuti chikoka cha chophatikizira pa polima chimachepetsedwa kwambiri, ndipo magwiridwe antchito amakhala osavuta kudziwa;(8) Imatsegula njira zatsopano zopangira mphira ndikukulitsa gawo logwiritsira ntchito lazamalonda.Choyipa ndichakuti kukana kwa kutentha kwa TPR sikuli kofanana ndi mphira, ndipo katundu wakuthupi amachepetsa kwambiri ndi kuwonjezeka kwa kutentha, kotero kuchuluka kwa ntchito kumakhala kochepa.Panthawi imodzimodziyo, kuponderezana, kukhazikika ndi kukhazikika kumakhala kotsika kwambiri kuposa mphira, ndipo mtengo wake nthawi zambiri umakhala wapamwamba kusiyana ndi mphira wofanana.Komabe, zambiri, zabwino za TPR zikadali zabwino kwambiri, pomwe zovuta zake zikukulirakulira.Monga mtundu watsopano wa zinthu zopulumutsa mphamvu komanso zokomera mphira, TPR ili ndi chiyembekezo cha chitukuko.
Polyurethane (PU), dzina lonse ndi polyurethane, ndi polima pawiri.Linapangidwa ndi Otto Bayer mu 1937.Polyurethane imagawidwa m'magulu awiri: mtundu wa polyester ndi polyether mtundu.Zitha kupangidwa kukhala mapulasitiki a polyurethane (makamaka mapulasitiki okhala ndi thovu), ulusi wa polyurethane (wotchedwa spandex ku China), mphira wa polyurethane ndi elastomers.
Soft polyurethane makamaka ndi thermoplastic linear structure, yomwe imakhala ndi kukhazikika bwino, kukana kwa mankhwala, kulimba mtima komanso makina amakina kuposa zida za thovu la PVC, ndipo imakhala ndi kupindika pang'ono.Ili ndi kutchinjiriza bwino kwamafuta, kutsekereza kwamawu, kukana kugwedezeka komanso magwiridwe antchito a anti-virus.Chifukwa chake, imagwiritsidwa ntchito ngati kuyika, kutsekereza mawu, zinthu zosefera.
Pulasitiki yolimba ya polyurethane ndi yopepuka, yodziwika bwino pakutchinjiriza mawu komanso kutsekemera kwamafuta, kukana mankhwala, mphamvu zamagetsi zamagetsi, kukonza kosavuta, komanso kuyamwa kwamadzi otsika.Amagwiritsidwa ntchito kwambiri pomanga, magalimoto, makampani oyendetsa ndege, zida zopangira matenthedwe.
Kuchita kwa polyurethane elastomer kuli pakati pa pulasitiki ndi mphira, kukana kwamafuta, kukana kuvala, kukana kutentha, kukana kukalamba, kulimba kwambiri komanso kulimba.Amagwiritsidwa ntchito makamaka m'makampani a nsapato ndi mafakitale azachipatala.Polyurethane itha kugwiritsidwanso ntchito kupanga zomatira, zokutira, zikopa zopangira, etc.
Polyurethane anawonekera mu 1930s.Pambuyo pazaka pafupifupi 80 za chitukuko chaukadaulo, izi zakhala zikugwiritsidwa ntchito kwambiri pantchito yopangira nyumba, zomangamanga, zofunikira zatsiku ndi tsiku, zoyendera, ndi zida zapanyumba.
Ubwino: PVC yolimba ndi imodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri ndi pulasitiki.PVC zakuthupi ndi mtundu wa zinthu sanali crystalline.
Pogwiritsidwa ntchito kwenikweni, zida za PVC nthawi zambiri zimawonjezeredwa ndi zokhazikika, zopaka mafuta, othandizira othandizira, ma pigment, othandizira ndi zina zowonjezera.
PVC zakuthupi sizimayaka, kulimba kwambiri, kukana nyengo komanso kukhazikika kwazithunzi.
PVC ili ndi kukana kwambiri kwa okosijeni, kuchepetsa wothandizila ndi ma asidi amphamvu.Komabe, imatha kuipitsidwa ndi ma acid okhala ndi oxidizing, monga sulfuric acid yoyikira ndi asidi wa nitric, ndipo siyenera kulumikizana ndi ma hydrocarbon onunkhira ndi ma hydrocarbon a chlorinated.
Zoipa: Makhalidwe otaya a PVC ndi osauka kwambiri, ndipo njira zake zimakhala zopapatiza kwambiri.Makamaka, zida za PVC zokhala ndi kulemera kwakukulu kwa mamolekyu ndizovuta kwambiri kukonza (zida zotere nthawi zambiri zimafunikira kuwonjezera mafuta kuti ziwongolere magwiridwe antchito), kotero zida za PVC zokhala ndi ma cell ang'onoang'ono zimagwiritsidwa ntchito.
Kuchepa kwa PVC ndikotsika kwambiri, nthawi zambiri 0, 2 - 0, 6%.
PVC ndiyosavuta kutulutsa mpweya wapoizoni pakuwumba.
Ubwino wa nayiloni:
1. Mphamvu zamakina apamwamba, kulimba kwabwino, kulimba kwamphamvu komanso kulimba mtima.Mphamvu yeniyeni yachitsulo ndi yapamwamba kuposa yachitsulo, ndipo mphamvu yeniyeni yophatikizira imafanana ndi yachitsulo, koma kulimba kwake kumakhala kochepa kuposa chitsulo.Mphamvu yamakokedwe ili pafupi ndi mphamvu zokolola, kuposa kawiri kuposa ABS.Kutha kuyamwa kwamphamvu ndi kugwedezeka kwa kupsinjika ndikwamphamvu, ndipo mphamvu yake ndiyokwera kwambiri kuposa mapulasitiki wamba, komanso kuposa utomoni wa acetal.
2. Kukana kutopa ndikwabwino kwambiri, ndipo mbali zake zimathabe kukhalabe ndi mphamvu zamakina zoyambirira zitapinda mobwerezabwereza.PA imagwiritsidwa ntchito nthawi zambiri pomwe kutopa kwanthawi ndi nthawi kwa ma escalator handrails ndi ma pulasitiki atsopano a njinga zamoto zimawonekera kwambiri.
3. Malo ochepetsetsa kwambiri komanso kukana kutentha (monga nayiloni 46, nayiloni yapamwamba ya crystalline imakhala ndi kutentha kwa kutentha kwapamwamba, komwe kungagwiritsidwe ntchito kwa nthawi yaitali pansi pa 150 ℃. Pambuyo pa kulimbitsa magalasi, PA66 ili ndi kutentha kwa kutentha kwapamwamba kuposa 150 ℃. 250 ℃).
4. Pansi yosalala, yolumikizana pang'ono, yosavala.Imadzipaka yokha ndipo imakhala ndi phokoso lochepa ikagwiritsidwa ntchito ngati chigawo cha makina osunthika.Itha kugwiritsidwa ntchito popanda lubricant pamene kugundana sikuli kokwera kwambiri;Ngati mafuta akufunikadi kuti achepetse kukangana kapena kuthandizira kutentha, madzi, mafuta, mafuta, ndi zina zotero.Choncho, monga gawo lopatsirana, limakhala ndi moyo wautali wautumiki.
5. Imagonjetsedwa ndi dzimbiri, zamchere ndi zamchere zambiri, asidi ofooka, mafuta a injini, mafuta, mafuta onunkhira a hydrocarbon ndi zosungunulira zambiri, zosakanikirana ndi mankhwala onunkhira, koma osagonjetsedwa ndi asidi amphamvu ndi okosijeni.Ikhoza kukana kukokoloka kwa mafuta, mafuta, mafuta, mowa, alkali ofooka, ndi zina zotero ndipo ali ndi mphamvu zotsutsa kukalamba.Itha kugwiritsidwa ntchito ngati kulongedza zinthu zamafuta opaka mafuta, mafuta, ndi zina.
Zoyipa:
1. Kusayamwa bwino kwa madzi ndi kukhazikika kwa mawonekedwe.
2. Kukana koyipa kwa kutentha kochepa.
3. The antistatic katundu ndi osauka.
4. Kukana kutentha kosakwanira.
Nthawi yotumiza: Feb-04-2023