Sawa, reka dusobanure birambuye ihame ryo guhindura elastomer kugirango tunoze ubukana bwaimyenda idoda. Uru nurugero rusanzwe rwo kugera kumikorere yo hejuru "kugwiza imbaraga no kugabanya intege nke" ukoresheje ibintu bifatika.
Amahame remezo: Gukomera nubugome
Icya mbere, reka twumve "gukomera." Gukomera nubushobozi bwibikoresho byo gukuramo ingufu no guhinduka kwa plastike kugeza igihe ivunitse mukibazo. Ibikoresho bifite ubukana bwiza birakomeye kandi birashobora kwihanganira, bisaba akazi gakomeye kuvunika.
Ibikoresho bivunaguye (nka polypropilene idahinduwe): Mugihe cyimbaraga zo hanze, iminyururu ya molekile ntabwo iba ifite umwanya wo kongera gutondekanya, guhangayikishwa cyane nudusembwa, biganisha kumeneka vuba no kuramba mukiruhuko.
Ibikoresho bikomeye: Bitewe nimbaraga zo hanze, zirashobora gutanga umusaruro no guhinduka kwa plastike, bigakoresha ingufu nyinshi muribwo buryo, bityo bikarwanya kuvunika.
Intego yibanze yo guhindura elastomer ni uguhindura igice cya-kristaline polymers nka polypropilene kuva imyitwarire ivunaguye ikavamo imyitwarire ivunika.
Amahame arambuye yo Guhindura Elastomer
Ihame rishobora kumvikana kurwego rwa microscopique na macroscopique. Intangiriro iri mubice bya elastomer bikora nkibintu byo kwibandaho hamwe ningufu zikurura.
1.
Iri ni ihame rikomeye. Iyo imyenda ya spunbond ikorewe imbaraga zo hanze (nko gutanyagura cyangwa ingaruka), inzira zikurikira zibaho imbere:
a) Guhangayikishwa no Gutangiza
Elastomers (nka EPDM, POE) mubisanzwe ntibishobora kubangikanya cyangwa guhuza igice na matrike ya polypropilene. Kubwibyo, nyuma yo kuvanga, bikwirakwizwa nkibintu bito, bitatanye "birwa" mubice bikomeza bya polypropilene "inyanja".
Kubera ko modulus ya elastomer iri munsi cyane ugereranije na polypropilene, guhangayikishwa cyane biboneka mumirongo iri hagati yibyiciro byombi iyo ikorewe imbaraga ziva hanze.
Izi ngingo zo kwibandaho zihinduka intangiriro yo gusara. Crazing ntabwo ari igikoma, ahubwo ni microporome fibre bundle imiterere itandukanijwe nicyerekezo cyimyitwarire, iracyahujwe imbere na fibre fibre. Imiterere yo gusara ikurura imbaraga nyinshi.
b) Kurangiza Crazy no gushiraho Shear Band
Uruhare rwa kabiri rwingenzi rwibice bya elastomer nuguhagarika crazing. Iyo umusazi uhuye nuduce duto twa elastomer mugihe cyo gukwirakwira kwayo, umurima uhangayikishije cyane ku isonga ryawo urahuzagurika, bikarinda umusazi gukura mu bice bya macroscopique byica.
Icyarimwe, kwibanda kumaganya nabyo bitera imisatsi itanga matrike ya polypropilene. Ibi bivuga kunyerera ugereranije no guhinduranya iminyururu ya polypropilene iminyururu ihangayikishijwe no kwogoshesha, ikora imirongo yimyenda; iyi nzira nayo isaba ingufu zingirakamaro.
c) Uburyo bwo Gukwirakwiza Ingufu
Ubwanyuma, ingufu zikoreshwa hanze zisaranganywa cyane cyane munzira zikurikira:
Gukora crazing nyinshi: gukoresha ingufu.
Guhindura no kuvunika ibice bya elastomer ubwabyo: gukoresha ingufu.
Umusaruro wogosha wa matrix: gukoresha ingufu.
Interfacial debonding: ibice bya elastomer biva muri matrix, gukoresha ingufu.
Iyi nzira yongerera cyane imirimo isabwa kugirango ivunika ryibintu, macroscopique igaragare nkiterambere ryinshi ryingufu zingaruka no kurwanya amarira, mugihe kandi byongera cyane kurambura kuruhuka.
2. Impinduka zicyiciro cyimpinduka: Ingaruka kumyitwarire ya Crystallisation
Kwiyongera kwa elastomers ntabwo bikora nk "inyongera" yumubiri gusa ahubwo binagira ingaruka kuri microstructure ya polypropilene.
Gutunganya Spherulite: Uduce duto twa Elastomer turashobora gukora nka nucleation ya heterogeneous nucleation, bigahagarika gahunda isanzwe yiminyururu ya molekuline ya polypropilene bikabatera koroha muburyo bwiza, bwuzuye spherulite.
Kunoza Imigaragarire: Ukoresheje guhuza ibice, guhuza imiyoboro hagati ya elastomer na matrike ya polypropilene birashobora kunozwa, bigatuma impagarara zishobora kwimurwa neza kuva muri matrike zikajya mubice bya elastomer, bityo bikarushaho gutera inkeke no kogosha.
Porogaramu zihariye muri Spunbond Imyenda idoda
Gushyira mu bikorwa amahame yavuzwe haruguru mugukora imyenda ya spunbond idafite imyenda ifite ingaruka zikurikira:
Kongera ubukana bwa fibre kugiti cye:
Mugihe cyo kuzunguruka, polypropilene yashonga irimo elastomers iramburwa muri fibre. Fibre yahinduwe ubwayo iba ikomeye. Mu mbaraga zituruka hanze, fibre ntizishobora kuvunika kandi irashobora guhinduka cyane, igatwara imbaraga nyinshi.
Gushimangira no Gukomera Imiterere ya Fibre Network:
Mugihe cyo gushyushya imbaraga zishyushye, fibre irahurira aho izunguruka. Fibre ifite ubukana bwiza ntishobora guhita ihita aho izunguruka iyo ikorewe imbaraga zo kurira.
Imbaraga zo hanze zishobora kugabanwa neza murusobe rwa fibre. Iyo fibre ihangayikishijwe cyane, irashobora kwimurira imihangayiko fibre ikikije deformasiyo, ikarinda kunanirwa byihuse biterwa no guhangayika.
Gusimbuka imbere mu kurira no gutobora:
Kurwanya amarira: Kurira ni inzira yo gukwirakwiza. Ibice bya Elastomer bitangiza neza kandi bigahagarika microcrake nyinshi, bikabuza guhurira mumacenga ya macroscopique, bikadindiza cyane inzira yo gutanyagura.
Kurwanya gucumita: Gutobora ni urusobekerane rwingaruka no kurira. Ibikoresho bikomeye cyane birashobora gutanga umusaruro mwinshi no guhindura ibintu mugihe ikintu cyamahanga cyacengeye, gikubiyemo ikintu cyo gutobora aho gutoborwa bitaziguye.
Umwanzuro
Incamake: Ihame ryo guhindura elastomer kugirango tunonosore ubukana bwa spunbond nonwovens ningirakamaro cyane kugirango uhuze matrise ikomeye ariko yoroheje ya polypropilene na reberi yoroshye, yoroheje cyane, yubaka uburyo bwiza bwo gukwirakwiza ingufu mubikoresho.
Mugutera gusara, guhagarika ibice, no guteza imbere umusaruro wogosha ukoresheje mikorosikopi ya mikorosikopi, imbaraga zangiza (ingaruka, gutanyagura) zikoreshwa hanze zihindurwa mubikorwa byinshi bito, bidasenya. Iyi macroscopically itezimbere ingaruka yibikoresho, kurwanya amarira, no kurambura kuruhuka, bigahindura imyenda idoda idoda kuva "yoroshye" ihinduka "bikomeye." Ibi bisa no kongeramo ibyuma kuri sima, ntabwo byongera imbaraga gusa, ariko cyane cyane, bitanga ubukana bukomeye.
Dongguan Liansheng Ntabwo Yubatswe Ikoranabuhanga Co, Ltd.yashinzwe muri Gicurasi 2020.Ni uruganda runini rutunganya imyenda rudahuza ubushakashatsi niterambere, umusaruro, no kugurisha. Irashobora gutanga amabara atandukanye ya PP spunbond idoda idoda hamwe n'ubugari bwa metero 3.2 kuva kuri garama 9 kugeza kuri garama 300.
Igihe cyo kohereza: Ugushyingo-16-2025