Resins za PVC zigezweho SG3, SG5, SG7: Ubuhanga bujyanye n'ibisubizo by'inganda kuva ku mpera kugeza ku mpera

Igishushanyo mbonera cya molekile n'imiterere ifatika

SG3 (Icyiciro cyo hejuru cyo koroha)
Iyi poroteyine ifite imiterere ya polymerization ya 1300 - 1500 na K - agaciro ka 70 - 72, ifite iminyururu miremire ya molekile yongera uburyo bwo gufata pulasitiki. Ikwirakwira ryayo rya 60 - 250μm rituma ibice byayo bikwirakwira mu buryo bumwe mu buryo bworoshye, bigatuma pulasitiki ishobora kwinjiza garama 25 - 35 kuri 100g ya resin. Imiterere yayo idahinduka itanga uburebure budasanzwe mu gihe cyo gucika, bigatuma iba nziza ku bicuruzwa bisaba ko ihora ihinduka nta gucika.

SG5 (Ifite urwego ruciriritse)
Mu kuringaniza igipimo cya polymerization cya 1000 - 1100 hamwe n'agaciro ka K ka 65 - 67, SG5 itanga ubutaka bwo hagati buhindagurika. Ubucucike bwayo bwa particles (0.45 - 0.58g / mL) bworohereza urujya n'uruza rw'amazi mu gusohora no mu gusya, mu gihe plasticizer ifata neza (20 - 28g / 100g) ituma habaho ihinduka kuva ku migozi ihamye igera ku miterere yoroshye yo koroha. Guhorana neza kw'uruhererekane rw'amamolekile bigabanya inenge mu gutunganya, bigatuma ubugari bw'urukuta mu gusohora imiyoboro buhorana.

SG7 (Icyiciro cy'Ubwubatsi Bukomeye)
Ifite polimeri ya 700 - 850 na K - agaciro ka 60 - 62, SG7 ishyira imbere ubushobozi bwo gupakira ibintu mu buryo bwa molekile kugira ngo bikomere. Imiterere yayo mito ya 40 - 180μm (ubucucike bwa 0.50 - 0.62g / mL) igabanya ubucucike mu bice byabumbwe, yongera ubudahangarwa mu nyubako. Kuba plastike nkeya (15 - 22g / 100g) ituma habaho imiterere ikomeye, mu gihe monomer ya vinyl isigaye ≤3μg / g yujuje amahame y’umutekano w’ibiribwa mu gupakira.

Sisitemu y'ibidukikije ikoreshwa

SG3: Impuguke mu bijyanye no guhindura imiterere y'umubiri
Mu rwego rw'ubuhinzi, filime zishingiye kuri SG3 zifite pulasitiki ya dogere 40 - 50 zigizwe n'ibifuniko by'ubushyuhe bya UV, bihuza uburyo urumuri rutwara n'imbaraga zo kwirinda amarira. Ku bijyanye n'ubuvuzi, ingano nto ya monomer ye ituma imiyoboro yoroshye ikoreshwa mu mashini zitunganya dialysis ikomeza kumera neza, mu gihe mu nkweto, ikora uduce duto dukomeza kumera neza mu gihe cy'ihindagurika ry'ubushyuhe.

SG5: Ifarashi y'inganda
Abakora insinga bakoresha ubwoko bwa pulasitiki ya SG5 ya 10 - 20 phr kugira ngo bakore ibikoresho byo gukingira umuriro bikoresha insinga z'amashanyarazi, bihuza insinga z'amashanyarazi n'ubudahangarwa bwa mekanike. Mu bwubatsi, isohoka mu duce dufunga amadirishya tudahura n'ikirere, aho ubukana bwayo buri hagati burwanya kwangirika kwa ozone. Ibice by'imodoka bikozwe mu injection, nk'imitako y'inzugi, bigira uruhare mu ngaruka zayo, imbaraga, uburemere, n'uburemere.

SG7: Umunyambaraga w'Uburimbane
Imiyoboro y’inganda ikoresha uburyo bwa SG7 bwo gukora imiyoboro y’amazi asukuye idakoresha imiti ndetse n’imiyoboro y’amazi ifite ingufu nke. Imiterere y’amadirishya asohowe, iyo avanze na dioxyde ya titanium, agaragaza ibara ryiza cyane mu bidukikije byo hanze. Abakora ibikoresho by’ikoranabuhanga bayikoresha mu gushyiramo ibikoresho bikozwe mu buryo bwa “injection”, kandi bakabyaza umusaruro uburyo ihamye mu gihe cyo guteranya ubushyuhe bwinshi.

Inyigisho yo kunoza imikorere

Uduce tw'imicungire y'ubushyuhe
SG3 isaba kugenzura ubushyuhe cyane (160 - 180°C) kugira ngo hirindwe kubora imburagihe; ndetse no kurenga urugero rw'ubushyuhe bwa 10°C bishobora gutuma aside hydrochloric irekurwa, bigatera umuhondo. Mu buryo bunyuranye, SG7 yihanganira ubushyuhe bwa 180 - 200°C, bigatuma imiyoboro minini isohoka vuba, nubwo kurenza 210°C bishobora gutuma uruhererekane rw'ibinyabutabire rucika.

Igishushanyo cya sisitemu y'inyongera
Gutuza: SG3 ikenera 1 - 2 phr ya calcium - zinc composite stabilizers kugira ngo irwanye kwangirika k'ubushyuhe mu gihe cyo gutunganya plasticizer nyinshi, mu gihe SG7 ikenera 0.5 - 1 phr gusa bitewe n'igabanuka ry'umuvuduko uterwa na plasticizer.
Gusiga amavuta: Ingano zose zigira 0.2 - 0.5 phr ya polyethylene wax, ariko SG3 ishobora gusaba ingano nyinshi kugira ngo igabanye uburyaryate bw'imbere mu bintu byoroshye.
Inyongeramusaruro: Antioxydants zo mu bwoko bwa SG7 zongerera igihe cyo gukora hanze, mu gihe inkurikizi zo guhindura ingaruka muri SG5 zongerera imbaraga ubudahangarwa ku ikoreshwa ry’ubukonje.

Ubuhanga mu by'ubwubatsi mu gushushanya Resin

Mu guhuza ubuhanga buhanitse bwa molekile n'ibizamini bikoreshwa, poroteyine yacu ya SG3, SG5, SG7 iha imbaraga abakora ibintu kurenga inzitizi za PVC zisanzwe. Kuva ku buryo bworoshye busabwa ku bikoresho byo kwa muganga bikoreshwa mu buryo busanzwe kugeza ku buryo bw'imiterere isabwa n'inyubako ndende, izi resini zigaragaza ihuriro ry'ubuhanga mu bya siyansi n'imikorere y'inganda—zishyiraho ibipimo bishya by'ibisubizo bya polymer bikoreshwa mu mikorere.

Ibisobanuro

Urupapuro rwo kugenzura ubuziranenge