Plasitiki ya Polyurethane (PU)
* Polyurethane (PU) ni incamake ya polyurethane, polyisocyanate na polyhydroxy polymer polymerization, iri mu ruhererekane rw'ingenzi rwa polymer irimo ibice byinshi by'uruhererekane rwa urethane (-NHCOO-) by'ibinyabutabire bya polymer.
* Ibikoresho bya pulasitiki bya PU byihariye
Polyurethane, izwi kandi nka polyurethane na polyurethane, ni ubwoko bw'uturemangingo tunini tugizwe n'ibice byihariye bya urethane mu munyururu mukuru. Ubu bwoko bw'ibikoresho bya polymer bufite ubushobozi bwo gukomera nk'ubwa rubber ndetse n'imbaraga n'imikorere myiza ya pulasitiki, kandi bufite akamaro kanini mu bice birindwi by'ingenzi bya pulasitiki, rubber, foam, fibre, coatings, kole na polymers zikora. Mu nganda ikoreshwa cyane mu mapine yihuta cyane, gaskets, matelas z'imodoka n'ahandi. Mu buzima bwa buri munsi, polyurethane ikoreshwa mu gukora ubwoko butandukanye bwa foam na sponge ya pulasitiki.
Ni iki ushobora gukora ukoresheje PU Plastike?
Elastome za polyurethane ni ubwoko bw'ibikoresho bifite imiterere ya kabutura na pulasitiki, bifite imbaraga zo gukurura, imbaraga zo gucika, imbaraga zo kurwanya ingaruka, imbaraga zo kwangirika, imbaraga zo kurwanya ikirere, imbaraga zo kurwanya hydrolysis, imbaraga zo kurwanya amavuta n'ibindi byiza.
Ikoreshwa cyane cyane nk'ibikoresho by'ubwubatsi (nk'imiyoboro, gaskets, imikandara, roller, gears, imiyoboro, nibindi), insulator, inkweto zo hejuru n'amapine akomeye. Urugero, nk'isahani yo gucukura, ifite urusaku ruto, ubushobozi bwo kwinjira cyane no kudashira kurusha isahani isanzwe y'icyuma. Byongeye kandi, polyurethane ifite ubushobozi bwo guhuza neza ibintu, nk'ibikoresho bya biomedical, ishobora gukoreshwa mu bikoresho bifasha mu muvuduko w'amaraso, imiyoboro y'amaraso y'ubukorano, amagufwa y'ubukorano, nibindi.
Ibi bikurikira ni bimwe mu bikorwa bya Polyurethane (PU)
- Ubwikorezi
- Ubwubatsi
- Imashini
- Ibikoresho by'ikoranabuhanga
- Ibikoresho byo mu nzu
- Gutunganya ibiribwa
- Imyenda n'imyenda
- Uruhu rw'ubukorikori
- Gucapa
- Inganda za peteroli
- Siporo
- Ubuvuzi
Ibiranga Polyurethane (PU)
* Ifuro rya polyurethane rigabanyijemo ubwoko bubiri: ifuro rikomeye n'ifuro ryoroshye, rifite uburimbane bwiza, uburebure, imbaraga zo gukanda no koroha, ndetse n'ubudahangarwa bwiza bwa shimi. Byongeye kandi, ifuro rya polyurethane rifite ubushobozi bwo gutunganya neza, gufatana, gukingira n'ibindi, bigizwe n'imikorere myiza y'ibikoresho byo gupfuka.
Elastomer ya polyurethane bitewe n'imiterere yayo ifite ibice by'iminyururu ibiri byoroshye kandi bikomeye, bityo uruhererekane rw'ibintu rushobora gutegurwa kugira ngo ruhe ibikoresho imbaraga nyinshi, gukomera neza, kudashira, kudashira amavuta n'indi miterere myiza, izwi nka "rubber idashira" polyurethane icyarimwe hamwe n'ubudashira bwa rubber n'ubudashira bwa pulasitiki.
* Ibikoresho bya polyurethane bifite polarity ikomeye, ituma bishobora gufatana neza n'ibikoresho byinshi kandi bishobora gukoreshwa nk'ubukorikori mu rwego rwo gufatana.
* Kole ya polyurethane ikoreshwa cyane cyane mu gupakira, kubaka, imbaho, imodoka, n'inganda z'inkweto.
Ibikoresho bya Polyurethane (PU) bikorwa bite?
Bitewe n’uko polyurethane ishobora gushonga cyane mu mazi, hagomba gukoreshwa uburyo bushya bwo gukora emulsion ya PU, uburyo bwo gukora emulsion ya polyurethane ikomoka mu mazi ahanini ni ubu bukurikira: ① hakoreshejwe oligomer polyol, chain extender, diisocyanate kugira ngo habeho molekile nyinshi ya PU pre-polymer; ② irangizwa nyuma y’uko pre-polymer ivanzwe mu mazi kugira ngo habeho ikwirakwira.
Uburyo bwo gutegura emulsion ya polyurethane bufite ibyiciro bibiri by'ingenzi: uburyo bwo gukurura emulsification hanze n'uburyo bwo gukurura emulsification imbere.
1. Uburyo bwo gukurura imyuka yo hanze ni uburyo bwo gukurura imyuka yo mu bwoko bwa emulsifier mu gihe hari emulsifier, ikase cyane.
2. Uburyo bwo kwihuza bukorwa hifashishijwe amatsinda akunda amazi mu gice cy’umubiri cya polyurethane.
Amatsinda akunda amazi yinjizwa mu gitereko cya molekile cya PU binyuze mu kwaguka k'uruhererekane rw'ama-monomer akunda amazi, agizwe n'amatsinda akunda umunyu n'ibitera umunyu.
Gukoresha pulasitiki ya polyurethane (PU) mu kongera gukoresha
- Gusubiramo ibyakozwe muri pulasitiki ya polyurethane (PU) Bishobora gushyirwa mu byiciro bibiri: kongera gukoresha ibikoresho mu buryo bufatika n'ibikomoka ku miti.Gusubiramo ibintu mu buryo bufatika bitanga uburyo bwiza kandi buhendutse bwo kongera gukoresha ifuro rikomeye rya polyurethane n'ibivanze. Ingano y'uduce tw'ibicuruzwa bya polyurethane foam bya mbere ibanza kugabanuka ikagera ku rugero rusanzwe rushobora kongera gukoreshwa mu buryo bwa kabiri. Ibikoresho byasubiwemo, cyangwa ibyakuwe mu bikorwa byo gukora, birangirika bigahinduka imiterere y'ingirakamaro nk'uduce duto, utunyangingo cyangwa ifu.Gusubiramo imiti ni uburyo bwo kugabanya ifuro rya polyurethane mu bikoresho fatizo bya polyurethane cyangwa ibindi bikoresho fatizo bya shimi hakoreshejwe alcohol, amineysis, hydrolysis cyangwa pyrolysis. Polyurethane foam ifite imigozi ya urethane na urea. Mu gihe cyo gukoresha alcohol, aminolysis na alkali hydrolysis, imigozi ya urethane na urea muri molekile ya polyurethane irashwanyagurika ikavungukamo polyols, polyamines aromatic, dioxyde de carbone n'ibindi.
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