Indlela okuyiyo yokuthi ukuthintana kwamandla wekhanda kuthinta ukusebenza kwezikhupha zesilika zokuzimela

Izindlela Zokusebenza Kwezilwane Zokuphatha Kwezicabha Izicuphi Zokwenza Ngokwezinye Zokusebenza Ngamaphutha

Ukuchaza kwe-HDT, i-VST, nokuthi ukuphatha kwesikhathi sokusebenza: Lokhu kusho ukuthi kungani kusenziwa ukuphatha kwezicabha

Kodwa kufundwa ukuthi izikhumba zesilika zokwenza ngokwezinye zizimele kakhulu ngezinhlayo, kukho izinto ezintathu eziphakanyisiwe kakhulu okufanele zihlalwe: Isilinganiso sesikhathi sokubuyela kwesikhathi (HDT), isilinganiso sesikhathi sokuhlela kweVicat (VST), nokuthi yisikhathi sokusebenza ngokuphelele. Isilinganiso sesikhathi sokubuyela kwesikhathi (HDT) sibonisa isikhathi esikhomba uma isikhumba siza kusukuma noma kusukumeka ngokuchaza uma kufika emhlabeni omkhulu, okuyisisekelo esikhulu uma umuntu ufula kulo into njengokwekofi enezindawo ezingu-180 Fahrenheit. Emva kwalokho, sikhona isilinganiso sesikhathi sokuhlela kweVicat (VST), esibonisa isikhathi esikhomba uma isilika siza kuhlela futhi siza kuhlala kahle. Izinkampani eziphakanyisiwe kakhulu ziyasebenza kahle hadi kuzo zingu-100 kuya kuni-135 Celsius. Ekugcineni, isikhathi sokusebenza ngokuphelele sibonisa ukuthi kuzoba kanjani ngaphandle kwezinsuku. Kuyaseta isikhathi esiphelele sokusebenza ngokuphelele ngaphambi kokuba isikhumba sibulawa. Ukuphuma ngaphezulu kwezilinganiso lezi zinokuthi kubhekwe ngokuthi kubhaleka, kubhaleka kahle emva kokubhaleka, noma amasili ayakwazi ukusebenza kahle, ikakhulu emva kokubhaleka ngendishayi yekhabinethi noma ukubhaleka ngemikroveyi ngamashumi amaningi.

Amakrystalu vs. Amapholimha Engaphambili: Indlela Yokuthi Isithembiso Semolekyuli Sibhekise Ithembisa Lokushisa Kwezicuphi Zokwenza Ngokwekubona

Amakhipu amahle okukhanya angakhathazeki kakhulu ngokwesikhathi sokuthi izinhlobo zabo zezinkulungwane ziyaphakanyiswa kakhulu. Faka isibonelo sika-polypropylene noma PP. Amamolekhi lweli lomkhakha ayiphakanyiswa kakhulu futhi ayisikhangela kakhulu, okusiza kubo ukubhekana nokuthi kushisa kakhulu kunamakhakha amaningi. Lokhu kukuthi i-PP ina-melting point enkulu kude kwe-160–170°C futhi iyabuyela emva kwezinkinga zokushisa. Ngokushisa ku-100°C, lezi zikhupu zizoba zihlukene kakhulu kwezinye zokushisa. Ngaphakathi kwale ndlela, izinhlobo zokukhanya ezithile njenge-polystyrene azisikhangeli kakhulu. Amamolekhi abo ayiphakanyiswa kakhulu futhi ayashisa kuzo zinkinga zokushisa ezincinci. Lokhu kusiza kubo ukuthi baphinde kakhulu uma kushiswa. Kusizwa kakhulu kuhle. Noma lezi zinhlobo zokukhanya zinamandla okuthi zibe yisikhathi sokushisa, kusiza kakhulu ukuthi zibe yisikhathi sokukhanya. Abadlayizwe abasebenza ngamakhupu amahle kufanele bahlukanise lokhu kubonakalisa kakhulu nokusebenza kahle ngemikhakha yezinkinga zokushisa.

Amathuthuzelo Asebenzayo Okugcina Isikhati Nokuthinta Kwazo Kukusebenza Kwamaphotha Eplastiki Eziyisikhiwe

Imiphumela Yokuvala Ngokuphakama Kokugcina, Ukusebenzisa Umkhumbi Wokuphakama, Nokugcina Kude Ngokuphakama Kokugcina

Izinkomishi zepulasitiki ezenziwe ngezifiso zibhekana nezinkinga ezithile ezihlukile ezihlobene nokushisa lapho zifakwa empeleni. Lapho igcwele uketshezi olushisayo oluphakathi kuka-85 no-95 degrees Celsius, ukushintsha okusheshayo kwamazinga okushisa kwenza ukuba impahla ikhule ngokushesha ngaphakathi, okudala amaphuzu okucindezelwa enkomishini. Lezi zindawo ezicindezelayo zivame ukuholela ezinkingeni zokugoba noma ngisho nasekuhlukeni kwama-seam uma umklamo ungacatshangiswanga kahle. Ukufaka lezi zinkomishi emshinini we-microwave ukuze zifudumeze kungenye inselele. Ukushisa akusakazeki ngokulinganayo, ngakho izindawo ezithile zishisa kakhulu kunezinye ngezinye izikhathi zifinyelela ngaphezu kuka-110 degrees Celsius. Lokhu kushisa ngokweqile kuyaphula ama-molecule epulasitiki, kuwenze abonakale efuthelene, ephukile noma enamathelayo. Futhi masingakhohlwa nokugcina isikhathi eside. Ukugcina lezi zindebe ezindaweni zokugcina izinto lapho amazinga okushisa ehlala ngaphezulu kuka-50°C isikhathi eside kubangela izinguquko ezincane kodwa eziqhubekayo zesimo okuthiwa ukonakala okuhambayo. Ngokuhamba kwesikhathi lokhu kwenza izinkomishi zilahlekelwe ukuma kwazo kwangempela futhi izivalo ziyeke ukuvalwa kahle.

Izinguquko zokuchaza kwezinsuku eziningi kune-80°C phakathi kwezinsuku zokusebenza nezinsuku zokusebenza kuzoba yinkimbinkimbi yalezi zinto. Izimo zokuphulwa eziphikisana ziyizwi zokuphulwa ezifanayo:

• Ukuphulwa kwezinqamulelo ngemiphumela yezindawo zokubeka (isibonelo, izilogo zokubeka okunguqondile noma izihlangothi esincane)
• Ukuphula kwesikhundla sokuvimbela okusobala ukuthi kubhekwe kakhulu ukuthi izinkampani zokufaka zihamba ngaphandle
• Ukuphula kwesivolumu sokugcina kwe-12–18% ngokwesibonelo sokuphulwa okungasolwa

Ukukhetha umkhakha uyadumisa izindlela zokuphulwa: izipolimha ezingaqondi zingathola ukuthi zithathe amandla okuchaza kahle kodwa zihlala zingafika emva kwezinsuku zokusebenza, ngakho-ke izipolimha ezingaqondi zihlala zingabona ukuthi zingavimbela kahle kodwa zingalungile kakhulu uma ziqondwa ngokuphinda kabusha.

Ubudlelwano, Ukuphatha Kuphela, Nokubagcina Kwesikhathi Eside Kwamaphepha Ama-Plastic Okuhlanganisa Amacupi Oka-Heat-Resistant

Izifomuleyishini Ezinakho i-BPA Nokuthi Kuyasebenza Kakhulu Ngokwesikhathi Sokuchaza: Ukuphula Ukuthi Izinkampani Zokufaka Zihamba Ngaphandle

Kulomhla wamanje, ukususa i-BPA kumaplastiki okwakho akhethwe ngokupheleleyo okuyinto esebenza kakhulu ekubeni ayabhalwa ngamadragu amahle emphakathi yezinkonzo zokudla nokudla. Amaphlastiki amaningi angathola ukuthi amahlawumbi amahle aphuma kona uma aphakanyiswa kakhulu, ikakhulu kunezinkonzo zokudla ezibizwa ngokuthi zingaba phakade kune-110°C noma kune-230°F. Lezi zinto ziyakhiwa kakhulu kumaqanda amanqina noma kumaqanda amanqina okukhala kwezinkonzo zokudla ezinamandla noma amafat. Lokhu kukhomba ukuthi abantu abaningi bakhala ngokuziphatha kwabo emzimbeni ngemva kokufunda izifundo eziningi zolwazi lwale ndlela. Izinkampani zamaphlastiki ezigcwele kakhulu manje ziyasebenzisa izinkampani ezithile ezisuka kwezinkampani zomhlaba emva koko kungabi na i-BPA eyayihle. Lezi zinkampani ziyakhiwa ukuthi zilungiselele isithembiso sokuphakanyiswa kweplastiki ukuze asihlwe kakhulu noma umuntu uyayikhipha ngokuphakanyiswa kwe-microwave ukusula noma uyayiqasha kulezinkampani ezikhanyayo uma uyayiqasha kulezinkampani ezikhanyayo.

Ukuphathwa ngokulingana nezindlela zokusebenza kwe-FDA zokudla nokudla kanye nezindlela zokusebenza kwe-EU EC 10/2011 kudinga ukuthi kwenziwe ukuthi kubonakaliswe ngokupheleleyo:

• Ukuphatha kwezinhlobo zokuphakanyiswa kwezinkampani kuzo zonke izikhathi zokuphakanyiswa
• Izinkulungwane zokugcina ezincane kune-0.01 ppm kwezinto eziphathelwa
• Ukuhlanya kwezinkinga zokugcina kumazinyo aphakeme ≥80°C

Izicertifiketi zezindawo ezinye—kufaka kuwo i-NSF/ANSI 51—zisiza ukuthi kubonakaliswe ngokuvamile ukuthi izinto ziyisafu nokusebenza kahle, futhi zibalulekile kubabuyi bamasiko emaphoyisa, emfundisweni, kanye nezisebenzi zokuphatha izinkulu zemithombo.

Imibuzo Evame Ukubuzwa

UHDT kuphela kubhokisi bezilayitha yini?
I-Heat Deflection Temperature (HDT) ibonisa xa ibhokisi yezilayitha iyadlula ngokuzimela ngenxa yemvula yomoya.

Kungani ipolipropileni ithandwa kubhokisi obuhlelela umoya?
Ipolipropileni ishishwa ngokuthi iyakhula kumazinyo aphakeme kuye kuma-135°C, futhi yisifundo esihle kubhokisi obuhlelela umoya kanye nokusetshenziswa kwimikrowave.

Ibhokisi yezilayitha ezingenwe ngokulinganayo ziyinani zokuba zingasizi i-BPA?
Yebo, izinkulu zebhokisi yezilayitha ezingenwe ngokulinganayo manje zisukela ngokungasizi i-BPA ukuze zikhulule ukuthi izinto zokushisa zizamele kusuka kwezinto zokushisa.

Izicodi zokubuyisela ipolipropileni zini?
I-Polypropylene iqukethe kucode yokubuyisela #5.