Nigute Silicone Yifata Tg igira ingaruka kumikorere ya Tape ya PTFE mubushyuhe buke

Wigeze ugerageza gukoresha kaseti isanzwe muri firigo? Ihinduka ikomeye, itakaza gukomera, kandi igacika iyo yunamye. Kuri PTFE yubushyuhe bwo hejuru ikoreshwa mubushyuhe buke - kuva mububiko bukonje kugeza imiyoboro ya cryogenic - ubushyuhe bwikirahure bwikirahure (Tg) butandukanya byose.

Umuvuduko ukabije wa silicone ufite Tg iri hasi cyane ya -120 ° C. Ninimpamvu yihishe ituma kaseti ya PTFE ikomeza guhinduka kandi igafatana nubushyuhe buke nka -70 ° C.

Aokai PTFE yize cyane uyu mutungo. Iyi ngingo isobanura siyanse iri inyuma ya Tg nuburyo igira ingaruka kumikorere ya kaseti mubihe bikonje.

Ubushyuhe bw'Ibirahure ni iki (Tg) kandi ni ukubera iki bifite akamaro?

Ubushyuhe bwikirahure (Tg) nigitekerezo aho polymer ihinduka kuva muburyo bworoshye, reberi ihinduka ikirahure gikomeye . Iyo ubushyuhe bugabanutse munsi ya Tg, iminyururu ya polymer ihagarara, gutakaza amazi nubushobozi bwo gufatira hamwe.

Kubikoresho bifata imbaraga:

• Hejuru ya Tg: Iminyururu igenda yisanzuye → ifata iguma yoroshye, ifatanye, kandi irashobora gutose

• Munsi ya Tg: Iminyururu irakonjeshwa → ifata irakomera, igatakaza, kandi igacika intege

Impamvu silicone PSA idasanzwe: Tg yayo -120 ° C iri hasi cyane ugereranije na acrylic (Tg hafi -20 ° C kugeza -30 ° C). Ibi bivuze ko silicone ikomeza kuba yoroheje kandi ikomera ku bipimo by'ubushyuhe bwagutse - kuva kuri 70 ° C kugeza kuri 260 ° C.

Isano iri hagati ya Tg nibikorwa bifatika ntabwo byoroshye kuri / kuzimya. Ndetse na 30 ° C hejuru ya Tg, kugenda kwa molekile biracyari bike; ibifatika birashobora kuba 'uruhu' aho kuba reberi yuzuye. Kubisabwa bya kaseti ya PTFE munsi ya -50 ° C, ibifata bigomba gukomeza modulus ya 'rubbery plateau' hagati ya 10⁴ na 10⁶ Pa. Silicone PSA ibigeraho kugeza kuri 80 ° C bitewe numugongo wa siloxane woroshye (–Si - O - Si–). Ibikoresho bya Acrylic, hamwe na karubone-karubone ikomeye, mubisanzwe bitakaza munsi ya -30 ° C. Ibi birasobanura impamvu kaseti ya PTFE ishingiye kuri silicone gusa isabwa kubikoresho bya firigo (-30 ° C kugeza 0 ° C) cyangwa ibidukikije bya kirogenike.

Uburyo bwa Microscopique Uburyo bwa Tg kuri Tape ya PTFE

Muri rusange imikorere yubushyuhe buke bwa PTFE kaseti yo hejuru yubushyuhe hamwe byombi bifatanye hamwe igenwa na PTFE substrate . PTFE ubwayo ifite Tg ya -120 ° C - isa cyane na silicone PSA.

Ubushishozi bwibanze: Igihe cyose ubushyuhe bwa serivisi bugumye hejuru ya Tg (urugero, -70 ° C, ni 50 ° C hejuru ya -120 ° C), byombi bifata hamwe na substrate biguma muburyo bworoshye cyane, byemeza ko ubushyuhe bwo hasi bworoshye kandi buhamye.

Laboratoire yisesengura yubushyuhe bwa Aokai PTFE yemeje ko silicone PSA igumana hejuru ya 80% yubushyuhe bwicyumba cyayo -70 ° C, mugihe PSA ya acrylic itakaza hejuru ya 90% munsi ya -30 ° C. Aya makuru ahuza na Tg itandukaniro.

Mu gukoresha korojene nyayo (urugero, kaseti ya mask yo gutera plasma yo hasi yubushyuhe cyangwa gukosora byigihe gito mumazi ya azote), abayikoresha bakunze kwibeshya ko firime ya PTFE yamenetse mugihe nyirabayazana nyirizina ari ugufata. Iyo ibifunga bikonje munsi ya Tg yayo, itakaza kubahiriza kandi ntishobora gukuramo imihangayiko. Umunaniro uhita wimurira muri PTFE substrate, irashobora kuba yoroheje, ariko igiti gikomeye gifata nkigikorwa cyo guhangayikisha, gitangira gucikamo ibice bifatika. Igisubizo ntabwo ari ugukoresha firime ndende ya PTFE, ahubwo ni ukugirango ibifatika bigume hejuru ya Tg. Kubintu bikabije bya kirogenike biri munsi ya -150 ° C, ndetse na silicone PSA iba marginal. Mu bihe nk'ibi, birasabwa gufatisha imashini (clamps, screw) cyangwa kaseti ya PTFE idafite imiti, kuko nta PSA ishobora gukora munsi ya -180 ° C.

Ingaruka ku Buke-Ubushyuhe bwo Guhuza no Guhinduka

1. Gufatanya nubushyuhe butandukanye

2. Guhinduka-Ubushyuhe buke

Ultra-low Tg (-120 ° C) ituma ibifata bigumana ubworoherane nubwitonzi ndetse no kuri -70 ° C, bikarinda neza gucika. Kaseti irashobora kugororwa, kuzingirwa, no gukomeretsa mu bwisanzure nta kuvunika kuvunika - bitandukanye na kaseti isanzwe ifata ibice bikonje.

Incamake & Amabwiriza yo gusaba

Ubushyuhe buke bwikirahure bwa silicone PSA ituma kaseti ya PTFE yubushyuhe bwo hejuru kugirango igumane neza kandi ihindagurika mugihe cy'ubushyuhe buke.

Guhitamo icyerekezo cyubushyuhe:

Ububiko & Ikoreshwa ry'inyandiko:

• Bika kaseti ahantu hose hakonje, humye kubisobanuro bya tekiniki

• Kubisabwa ubushyuhe buke (urugero, gushira kaseti ahantu hakonje), shyushya kaseti hamwe nubuso buhuza kugirango utezimbere neza

• Irinde gukoresha kaseti iri munsi ya 0 ° C udashyushye - ndetse na silicone PSA ikeneye guhura kwambere hejuru ya Tg kugirango itose neza

Muncamake , ubushyuhe bwikirahure burenze urugero (-120 ° C) bwa silicone yumuvuduko ukabije niwo utuma PTFE yubushyuhe bwo hejuru ikwiranye bidasanzwe nibidukikije bikonje na kirogenike. Mugihe kaseti ya acrylic yananiwe munsi ya -30 ° C, kaseti ya PTFE ishingiye kuri silicone ikomeza guhinduka kandi ikamanuka kugeza kuri 70 ° C - kandi irashobora kubaho ubushyuhe buke bwo hasi hamwe no kugabanuka.

Kubikorwa byinshi bikonje bikoreshwa munganda (firigo, ibikoresho byurunigi bikonje, ibyubatswe hanze mugihe cyitumba), kaseti ya PTFE hamwe na silicone PSA ikora neza. Kumurimo wimbitse wa cryogenic, baza umuhanga - hanyuma urebe uburyo bwo gutunganya imashini iri munsi ya -150 ° C.

Ukeneye kaseti ya PTFE kugirango ukoreshe ubushyuhe buke? Aokai PTFE itanga amanota asanzwe kandi yahinduwe kubidukikije bitandukanye bikonje. Menyesha itsinda ryacu rya tekinike hamwe nubushyuhe bwawe hamwe ninshingano zawe.

Yatanzwe na Jiangsu Aokai Ibikoresho bishya byikoranabuhanga Co, Ltd.

Kubisobanuro birambuye, ibintu byakoreshejwe, hamwe nibisubizo byabigenewe byuruhererekane rwuzuye harimo imyenda yubushyuhe bwo hejuru ya PTFE, kaseti yubushyuhe bwo hejuru bwa PTFE, umukandara wa meshi wa PTFE, umukandara udahuza, umwenda umwe wa PTFE, igitambaro cyo kwihanganira ubushyuhe bukabije hamwe nigitambara cya fiberglass , nyamuneka twandikire:

• Bwana Guo: +86 18944819998

• Bwana Liu: +86 13705266308

Twisunze ubuhanga nubunyangamugayo, twiyemeje gutanga igisubizo kimwe kandi twita kuri serivisi.