Mmetụta nke iru mmiri gburugburu na PTFE Emulsion Impregnation

Na n'ezie mmepụta usoro nke PTFE akwa okpomọkụ akwa site Jiangsu Aokai New Materials, gburugburu ebe obibi iru mmiri na-emekarị na-achịkwa n'ime a kpọmkwem nso nke 40%-60% RH , jikọtara ya na okpomọkụ ụkpụrụ. A na-edozi ọnụego evaporation ka ọ dị ntakịrị ala karịa ọnụego mbufe mmiri na emulsion n'ime netwọk capillary, na-eme ka ntinye zuru oke na nhazi nke emulsion mgbe ị na-enweta ihe nkiri PTFE na-enweghị ntụpọ.

Isi mmetụta nke iru mmiri gburugburu ebe obibi na PTFE emulsion impregnation dabeere na nguzozi ike n'etiti ọnụego evaporation mmiri na nkwụsi ike emulsion. PTFE emulsion bụ a na-abụghị Newtonian mmiri mejupụtara PTFE resin particles (gbasasịrị agba), surfactants, stabilizers, na mmiri (na-aga n'ihu na-adọ). Dị ka ihe gburugburu ebe obibi, iru mmiri na-achịkwa volatilisation kinetics nke ihe mgbaze (mmiri), na-egosipụta mmetụta dị mkpa dị ka ndị a:

1. Mmetụta dị mkpa na usoro impregnation

The impregnation ogbo chọrọ emulsion n'ụzọ dị irè banye n'ime pores ma ọ bụ eriri gaps nke mkpụrụ (eg, iko eriri ákwà, metal ntupu).

Ebe iru mmiri dị ala : Mmiri na-ekupụ ngwa ngwa, na-eme ka emulsion ahụ mee 'elu-akọrọ' ngwa ngwa na mkpụrụ. Nke a na-abawanye viscosity pụtara ìhè nke emulsion na interface, na-egbochi capillary ntinye nke resin particles n'ime mkpụrụ nke miri emi ma na-ebute 'enweghị impregnation zuru oke' - ya bụ, akpa ikuku fọdụrụ n'ime mkpụrụ. Ka ọ dị ugbu a, ikuku evaporation ngwa ngwa na-ewepụ oke okpomọkụ, nke nwere ike ime ka ọnọdụ okpomọkụ dị na mpaghara ahụ daa na mberede, na-eme ka emulsion thermodynamically na-eme ka mmiri ozuzo dị elu, na-eduga na 'peel orange' ma ọ bụ ọkpụrụkpụ na-enweghị isi na oyi akwa.

Mpaghara iru mmiri dị elu : A na-egbochi ikpochapụ mmiri, na emulsion na-anọgide na ọnọdụ mmiri dị ala na-enweghị viscosity na mkpụrụ ruo ogologo oge. Maka mkpụrụ osisi kwụ ọtọ ma ọ bụ nke nwere mmasị, sagging na-adị mfe n'okpuru ike ndọda; N'ihi na nnukwu hygroscopic substrates, elu iru mmiri nwere ike igbochi gas na-agbapụta n'ime mkpụrụ, na-akpụ microbubbles na-etolite n'ime pinhole ntụpọ n'oge na-esote sintering.

2. Mmetụta dị mkpa na Ihe nkiri ikpeazụ-ịkpụ Ogo

PTFE ihe nkiri n'ozuzu na-agụnye abụọ nkebi: ihicha (mwepụ mmiri) na elu-okpomọkụ sintering (ụmụ irighiri agbaze). Iru mmiri na-emetụtakarị nhazi nke ahụ ndụ ndụ ndụ n'oge ihicha, bụ nke a na-eketa na fim ikpeazụ.

Mgbawa na nrụgide dị n'ime : Nhazi ihe nkiri nke PTFE resin particles na-adabere na nrụgide capillary n'oge evaporation mmiri iji mpikota ihe irighiri ihe n'ime akwa akwa akwa. Oke iru mmiri dị ala na-ebute mmụba dị nkọ na gradient capillary na ihicha ngwa ngwa nke ukwuu, na-ebute oke nrụgide dị n'ime n'ime ahụ ndụ ndụ ndụ. Ebe ọ bụ na PTFE enweghị ikike ịgwọ ọrịa nke onwe ya tupu ịmịnye ya, nchekasị dị otú ahụ na-eduga ozugbo na microcracks ma ọ bụ macroscopic cracking na green ozu. A pụghị ikpochapụ mgbawa ndị a mgbe ọ gbasasịrị, na-ebute ntanye ihe nkiri ma ọ bụ belata ike ọrụ.

Mbugharị surfactant na ihe fọdụrụ : Surfactants (dị ka ihe ndị ọzọ na perfluorooctanoic acid) dị na azụmahịa PTFE emulsions na-akwaga na mmiri evaporation n'oge ihicha. Ebe dị elu iru mmiri na-agbatị windo ihicha, na-enye ohere zuru ezu maka ihe ndị na-emepụta ihe na-agbakọta n'elu, na-akpụ mmanụ slick ma ọ bụ akpụkpọ ahụ siri ike. Ọ bụrụ na nke a oyi akwa na-adịghị n'ụzọ zuru ezu decomrated ma ọ bụ volatilized na mmalite sintering ogbo, ọ ga-carbonized na encapsulated n'ime ihe nkiri, na-eme ka yellowing, belata njupụta, na budata ebelatawo adhesion n'etiti PTFE na mkpụrụ (ogbenye interfacial bonding n'ihi mmetọ iche).

Njupụta ihe nkiri na porosity : Ihe nkiri PTFE dị mma kwesịrị ịbụ enweghị pinhole na oke. Njikwa iru mmiri na-ezighi ezi na-eduga na mmiri fọdụrụnụ bụ nnukwu ihe egwu. N'okpuru oke iru mmiri, ọ bụrụ na ewepụghị mmiri kpamkpam n'oge ikpo ọkụ na ihicha, mmiri fọdụrụnụ na-epupụta ozugbo n'oge mgbụsị akwụkwọ na-esote (ihe dị ka 327-400 Celsius C) na mgbasawanye olu dị egwu, na-emepụta oghere ma ọ bụ interlayer blisters na fim ahụ gbazere. N'aka nke ọzọ, n'okpuru oke iru mmiri dị oke ala, ihicha elu elu ngwa ngwa na-etolite akpụkpọ ahụ mechiri emechi nke na-egbochi ikuku mmiri dị n'ime, na-ebutekwa ọnya ma ọ bụ delamination n'oge mgbụsị akwụkwọ n'ihi oke ikuku.

Na ụkpụrụ, mmetụta nke iru mmiri gburugburu na nhazi PTFE emulsion bụ n'ezie ntinye aka na kinetics mmiri evaporation:

Obere  iru mmiri dị ala (oke nkụ)  na-ebutekarị: nnabata adịghị mma, ọkwa egbochiri (oghere mgbochi), ihicha mgbape, na nkesa na-enweghị isi nke ihe ndị fọdụrụ na surfactant.

Oke  iru mmiri (oke oke mmiri)  na-ebutekarị: mwụda, ịba ụba n'ọkpụkpụ, oke mmiri na-ese n'elu mmiri, ọnya na-egbuke egbuke mgbe ọ gbasasịrị, na mbelata nrapado.

Ozi dị n'elu bụ Jiangsu Aokai New Materials Technology Co., Ltd.

Maka nkọwa zuru ezu, ihe atụ ngwa na ngwọta ahaziri nke ngwaahịa anyị zuru oke, gụnyere akwa akwa okpomọkụ dị elu PTFE, teepu okpomọkụ dị elu PTFE, eriri akwa PTFE dị elu, eriri laminating na-enweghị ihe ọ bụla, akwa PTFE nwere otu akụkụ, akwa mkpuchi na-ekpo ọkụ na-ekpo ọkụ, eriri ọkụ na-eguzogide, wdg.

·  Igwe ọkụ ọrụ: Maazị Guo 18944819998

Mazị  Liu 13705266308

Anyị na-akwado nkà ihe ọmụma ọrụ ọkachamara na iguzosi ike n'ezi ihe, ma raara onwe ya nye inye gị ngwọta nkwụsịtụ na ọrụ nlebara anya.