Ke koho ʻana i ka resin epoxy i ka prepreg

2023-02-21


  ʻO Prepreg ka mea maʻamau i ka waena o ka maloʻo ʻana a i ʻole prepolymerization o ka fiber a i ʻole kona lole i hoʻopili ʻia me ka ʻōnaehana resin i hoʻohana ʻia no ka hana ʻana i nā composites resin matrix. ʻO ka huahana pepa prepreg i hana ʻia e ka hoʻomoe ʻana i ka fiber hoʻoikaika i loko o ka resin matrix ka mea waena o ka mea hoʻohui. ʻO ka pepa prepreg kekahi o nā mea waiwai nui o FR4 pepa, 3240 pepa epoxy, a pepa bakelite.


2023年2月21.1.webp


ʻO nā mea hoʻoikaika i ka maʻamau e komo pū me:


  ʻO ka pulupulu kalapona, ke aniani aniani, ka polyethylene fiber, a me ka fiber polyamide aromatic.


  ʻO ka matrix resin ka mea maʻamau:


  Eokixy resin, polyester resin, vinyl resin, cyanate ester, thermoplastic resin, etc.


  Hiki i ka composite i hana ʻia ma ka hoʻohana ʻana i ka prepreg ke hoʻomaikaʻi i ka ikaika, ka paʻakikī, ka pale ʻana i ka corrosion, ke ola luhi, ka pale ʻana a me ka hopena o ka hopena o ka mea, e māmā a loaʻa kahi manawa mālama a me nā ʻano ʻē aʻe.


  ʻO nā ʻano hana o ka prepreg e pili ana i ke ʻano wela-melt a me ke ʻano impregnation solution. ʻO ke ʻano hoʻoheheʻe wela e pili ana i ka hoʻomehana ʻana i ka resin matrix e hōʻemi i ka viscosity a hoʻohele like i ka waena o ka fiber. He maʻalahi ka mālama ʻana i ka resin maʻiʻo o ke ʻano wela hoʻoheheʻe a ʻaʻole i loko o ka solvent, akā i ka wā i kiʻekiʻe ai ka viscosity resin, maʻalahi ka hoʻololi ʻana o ka fiber. ʻO ke kaʻina hana impregnation e pili ana i ka hoʻoheheʻe ʻana i ka resin i loko o ka solvent e hōʻemi i ka viscosity, a laila hoʻomehana i ka resin e hoʻokaʻawale i ka solvent ma hope o ka loaʻa ʻana o ka fiber. ʻO ke ala impregnation hoʻonā haʻahaʻa i ke kumukūʻai a maʻalahi i ka hana ʻana, akā maʻalahi ka hoʻohaumia ʻana o ka solvent a hiki ke hoʻopilikia i ka ikaika o ka mea i ka wā o ka volatilization.


  I kēia manawa, ʻo prepreg kekahi o nā mea koʻikoʻi i ka ʻenehana hoʻoheheʻe composite. I ka prepreg, ʻo ka resin epoxy ka resin matrix nui. Hoʻopili piha ka resin epoxy i ka mea fiber i loko o ke kūlana wai, a ma hope o ka hoʻōla ʻana, hoʻololi ka resin mai ke kūlana wai i ke kūlana paʻa. No ka mea ʻaʻole i hoʻōla piha ʻia ka resin, pono e mālama ʻia ka prepreg i kahi haʻahaʻa haʻahaʻa haʻahaʻa. I ka wā e hoʻohana ʻia ai, e hana ʻia ma ke kaʻina hana hoʻoheheʻe ʻana, a laila hoʻokiʻekiʻe hou i ka wela kiʻekiʻe a hiki i ka hoʻōla piha ʻana.


ʻO nā resins epoxy i hoʻohana ʻia i ka prepreg:

NPEL-128 (Epoxy Resin e51)

Epoxy like (g/eq): 184~190

Viscosity (cps/25 ℃): 12000~15000

ʻO ka wehewehe huahana: ʻO ka bisphenol maʻamau maʻamau A epoxy resin.


EPOXY RESIN E51

NPSN-901 × kanahikukūmālima

Epoxy like (g/eq): 450~500

Viscosity (cps/25 ℃): 8000~15000

ʻO ka wehewehe ʻana o ka huahana: bisphenol ma muli o ka solvent He resin epoxy, loaʻa iā 25% Xylene solvent.

 

NPPN-638S

Epoxy like (g/eq): 170~190

ʻO ka wehewehe ʻana o ka huahana: phenolic epoxy resin maʻamau.

 

NPEF-170

Epoxy like (g/eq): 160~180

Viscosity (cps/25 ℃): 2000~5000

Ka wehewehe huahana: bisphenol F epoxy resin.

 

  I nā makahiki i hala iho nei, ua hoʻohana nui ʻia ka prepreg i nā mea hoʻohui o ka aerospace, ka makani makani, ke kaʻaahi kaʻa, pipeline a me nā huahana haʻuki a me nā leʻaleʻa. Loaʻa iā ia kahi manaʻo hoʻohana ʻoi aʻe a ākea i ka hana ʻāina a me ke ola.


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