Nchiyani Chimachititsa Kusweka mu Njira ya PTFE Impregnation?

Monga katswiri wopanga nsalu za PTFE zotentha kwambiri, Jiangsu Aokai New Materials afotokoza zomwe zimayambitsa kusweka munsalu yamagalasi ulusi mutatha kulowetsedwa ndi emulsion ya PTFE (polytetrafluoroethylene). Iyi ndi nkhani wamba ndondomeko kupanga gulu la zinthu, amene kawirikawiri zimachitika pa kuyanika (kuchotsa chinyezi ndi surfactants) kapena mkulu-kutentha sintering (kusungunuka PTFE particles mu filimu mosalekeza).

1. Kusagwirizana Kwambiri kwa Ma Coefficients Owonjezera a Thermal

Ichi ndi chifukwa chachikulu cha thupi.

Pali kusiyana kwakukulu mu ma coefficients okulitsa kutentha pakati pa magalasi opangira magalasi ndi PTFE: mzere wowonjezera wowonjezera wa galasi umakhala pafupifupi 5×10⁻⁶/℃ , pamene PTFE ndi pafupifupi 100×10⁻⁶/℃ mpaka 200×10⁃⁶  nthawi pafupifupi/⁶ 2).

Panthawi yozizirira (kuchokera pa kutentha kwa sintering pafupifupi 380 ℃–400 ℃ mpaka kutentha kwa chipinda), PTFE imachepa kwambiri kuposa chimango cha fiber galasi. Popeza nsalu yotchinga magalasi imakhala ngati chigoba cholimba, PTFE imakakamizika pakuchepa, kutulutsa kupsinjika kwamkati kwamatenthedwe. Pamene kupsyinjika uku kupitirira mphamvu yowonongeka ya filimu ya PTFE kapena mphamvu yolumikizana pakati pa PTFE ndi galasi la galasi, kusweka kumachitika kuti mutulutse nkhawa.

2. Kulamulira Molakwika kwa Kuyanika ndi Sintering Njira

Kuwotcha magawo azinthu zomwe zidalowetsedwa zimakhudza mwachindunji kusweka:

·  Kutentha mopitirira muyeso Kutentha : Makamaka padziko 100 ℃ (mwachangu vaporization chinyezi) ndi 200 ℃-250 ℃ (kuwola kwa surfactants mu emulsion ndi crystalline kusintha zone pamaso PTFE sintering). Kutentha kofulumira kumayambitsa kupsinjika kwamkati ndi kukhudzidwa kwa gasi chifukwa cha kusungunuka kwa nthawi yomweyo kwa zosungunulira ndi zowonjezera, zomwe zimapangitsa kuti zokutira ziphwanyike.

:  Kuzizira kofulumira kwambiri Kuwonekera mwachindunji ku mpweya wozungulira kuti uzizizire mofulumira pambuyo pa sintering kumayambitsa kupsinjika kwanthawi yomweyo chifukwa cha kusiyana kwakukulu kwa kutentha, komwe kumapangitsa kuti maukonde aphwanyike.

·  Kutentha kwambiri kwa sintering kapena nthawi yayitali kwambiri ya sintering : Izi zimayambitsa kuwonongeka kwa PTFE molekyulu yolemera komanso kuchuluka kwamadzimadzi, zomwe zimapangitsa kuti zinthuzo zikhale zosavuta kusweka ndi kupsinjika.

3. Nkhani mu Impregnation Njira ndi Emulsion Concentration

Makulidwe, kufanana ndi kuya kwa gawo lomwe lalowetsedwa kumakhudza mwachindunji kusweka:

·  Wokhuthala kwambiri wosanjikiza wosakwatiwa : Pofuna makulidwe kapena kupanga bwino, zokutira za PTFE zimayikidwa mu chiphaso chimodzi. Pa kuyanika ndi sintering, ❖ kuyanika wandiweyani ali ndi njira yayitali yochotsera zosungunulira ndipo amadutsa kwambiri volumetric shrinkage (PTFE emulsion imakhala ndi zolimba pafupifupi 60%, kutanthauza kuti pafupifupi 40% chinyezi chiyenera kuchotsedwa), zomwe nthawi zambiri zimayambitsa kusweka.

·  Kusalowa m'mimba mosagwirizana : Kuchuluka kwa PTFE kokhazikika kapena kugawa kosiyana kwa emulsion pansalu kumabweretsa kupsinjika kwapang'onopang'ono.

·  Kusakwanira emulsion kulowa : Ngati galasi CHIKWANGWANI nsalu si dewax kapena bwino pamwamba mankhwala, PTFE emulsion amalephera kulowa mu mitolo CHIKWANGWANI ndipo amangopanga zachiphamaso 'filimu yapakhungu'. Firimuyi imakhala yolimba yolimba ndi gawo lapansi ndipo imakonda kuswa kapena kusweka ikatenthedwa.

4. Zogwirizana ndi gawo lapansi

·  Nsalu ya unde-wax yagalasi ya fiber : Nsalu yagalasi ya fiber imakhala ndi ma saizi (paraffin, epoxy, etc.) kuchokera pakuluka. Popanda kutentha kwapamwamba kwambiri kapena kuyeretsa mankhwala asanalowe m'mimba, zinthu zamoyozi zimakhala ndi carbonize komanso zimasinthasintha panthawi yomwe sintering imatulutsa, imatulutsa mpweya umene umaphwanya ❖ kuyanika kapena kufooketsa mgwirizano pakati pa PTFE ndi galasi fiber, zomwe zimapangitsa ming'alu.

·  Kapangidwe ndi makulidwe ansalu yagalasi ya fiber : Nsalu yagalasi yokhuthala komanso yothina kwambiri (monga nsalu yokhuthala ya satin) imawonetsa kulimba komanso kudziletsa kwambiri pakuchepa kwa PTFE. Pakadali pano, ma groove akuya pakati pa mitolo ya ulusi amatha kuyambitsa kupsinjika komanso kusweka m'mphepete mwa ma groove pakuyanika.

Zambiri pamwambapa zimaperekedwa ndi Jiangsu Aokai New Materials Technology Co., Ltd.

Kuti mudziwe zambiri, zochitika zamagwiritsidwe ntchito ndi mayankho makonda azinthu zathu zonse - kuphatikiza nsalu ya PTFE yotentha kwambiri, tepi ya PTFE yotentha kwambiri, lamba wa PTFE wotentha kwambiri, malamba opanda msoko amakina omangira, nsalu ya PTFE ya mbali imodzi, lamba wosagwirizana ndi kutentha kwapamwamba kwambiri, zotchingira magalasi osakanikirana ndi zinthu zina zamagalasi osagwirizana kulumikizana nafe:

·  Nambala yafoni yautumiki: Mr. Guo: +86 18944819998 Bambo Liu: +86 13705266308

Nthawi zonse timatsatira malingaliro a ntchito zotsika mtengo, ukatswiri ndi kukhulupirika, ndipo tadzipereka kukupatsirani mayankho oyimitsa kamodzi ndi ntchito yachidwi!