Ka hoʻohana ʻana i nā mea hoʻopili epoxy resin

Epoxy resin adhesive(i kapa ʻia ʻo epoxy adhesive a i ʻole epoxy adhesive) i ʻike ʻia mai ka makahiki 1950, ʻoi aku ma mua o 50 mau makahiki. Akā, me ka waena o ka 20th kenekulia, he like 'ole o ka adhesive theory, a me ka adhesive chemistry, adhesive rheology a me ka adhesive damage mechanism a me ka hana noiʻi kumu 'ē aʻe i ka holomua hohonu, no laila ua wikiwiki ka holomua o nā waiwai adhesive, nā ʻano a me nā noi. ʻO ka epoxy resin a me kāna ʻōnaehana hoʻōla me kāna hana kūikawā, maikaʻi loa a me ka resin epoxy hou, ke hoʻomau nei ka mea hoʻōla hou a me nā mea hoʻohui, lilo i papa o nā mea hoʻopili koʻikoʻi me ka hana maikaʻi loa, nā ʻano like ʻole, ākea ākea.
ʻAʻole maikaʻi ka epoxy resin adhesive me nā plastic non-polar e like me ka polyolefin bonding, no nā ʻano mea metala like ʻole e like me ke aluminika, ke kila, ka hao, ke keleawe: nā mea non-metallic e like me ke aniani, ka lāʻau, ka ʻula, etc.: a me nā plastic thermosetting e like me phenolics, aminos, unsaturated polyester, etc. ʻO ka epoxy adhesive kahi mea hoʻopili paʻa i nā noi epoxy resin kaumaha.
Hoʻokaʻawale ʻia e nā kūlana hoʻōla
Paʻa hoʻōla anu (ʻaʻohe mea hoʻopili wela). Ua mahele pū ʻia i:

• Haʻahaʻa wela curing adhesive, mālama wela <15 ℃;
• ʻO ka lāʻau lapaʻau hoʻomaʻamaʻa lumi lumi, mālama i ka mahana 15-40 ℃.
• Hoʻopili hoʻōla wela. Hiki ke mahele hou ia i:
• Medium wela curing adhesive, mālama wela ma kahi o 80-120 ℃;
• Kiʻekiʻe wela curing adhesive, curing wela> 150 ℃.
• ʻO nā ala ʻē aʻe o ka hoʻōla ʻana i ka lāʻau lapaʻau, e like me ka lāʻau lapaʻau hoʻōla māmā, ka ʻili pulu a me ka lāʻau hoʻōla wai, ka latent curing adhesive.

Loaʻa i nā epoxy adhesives nā mea maikaʻi ma mua o nā ʻano adhesive ʻē aʻe:

1. Epoxy resinLoaʻa i nā hui polar like ʻole a me ka pūʻulu epoxy ikaika loa, no laila he ikaika adhesive ikaika me nā ʻano mea polar like ʻole e like me ke metala, aniani, sima, lāʻau, plastics, etc.
2. ʻAʻohe mea haʻahaʻa molecular volatiles i hana ʻia ke hoʻōla ʻia ka resin epoxy. ʻO ka liʻiliʻi ka liʻiliʻi o ka papa adhesive, ma kahi o 1% a 2%, ʻo ia kekahi o nā ʻano me ka liʻiliʻi liʻiliʻi liʻiliʻi liʻiliʻi i nā resins thermosetting. Ma hope o ka hoʻohui ʻana i ka filler hiki ke hoʻemi ʻia i lalo o 0.2%. ʻO ka coefficient o ka hoʻonui laina o ka mea ho'ōla epoxy he liʻiliʻi loa. No laila, liʻiliʻi ke koʻikoʻi o loko, a he liʻiliʻi ka hopena i ka ikaika paʻa. Eia kekahi, he liʻiliʻi ka kolo o ka epoxy cured material, no laila maikaʻi ke kūpaʻa dimensional o ka papa hoʻopili.
3. Nui nā ʻano o ka epoxy resins, curing agents a me nā mea hoʻololi, hiki ke kūpono a me ke akamai i hana ʻia e hana i ka mea hoʻopili me ke kaʻina hana e pono ai (e like me ka ho'ōla wikiwiki ʻana, ka mālama ʻana i ka lumi wela, ka mālama haʻahaʻa haʻahaʻa, ka hoʻōla ʻana i ka wai, haʻahaʻa-viscosity, kiʻekiʻe viscosity, etc.), ka hoʻoheheʻe uila, ka hoʻoheheʻe magnetic, ka hana wela, a me nā mea'ē aʻe).
4. Me nā ʻano mea like ʻole (monomer, resin, rubber) a me nā mea inorganic (e like me nā mea hoʻopihapiha, a me nā mea ʻē aʻe) loaʻa ka hoʻohālikelike maikaʻi a me ka reactivity, maʻalahi i ka copolymerization, crosslinking, blending, filling a me nā hoʻololi ʻē aʻe e hoʻomaikaʻi ai i ka hana o ka papa adhesive.
5. ʻO ke kūpaʻa corrosion maikaʻi a me nā waiwai dielectric. Kū'ē i ka waikawa, ka alkali, ka paʻakai, nā mea hoʻoheheʻe a me nā meaʻino'ē aʻe. Ke kū'ē leo 1013-1016Ω-cm, ikaika dielectric 16-35kV/mm.
6. Nui nā kumu epoxy resins, nā mea ho'ōla a me nā mea hoʻohui, hana nui, maʻalahi e hoʻolālā, hiki ke hoʻopili ʻia i ka hoʻopili kaomi ʻana, hiki ke hoʻopili ʻia ma kahi ākea.

Pehea e koho aiepoxy resin

I ke koho ʻana i kahi resin epoxy, nui nā kumu e noʻonoʻo ai, ʻo ia hoʻi:

1. E hoʻohana: Hiki ke hoʻohana ʻia ka epoxy no ke kumu maʻamau a i ʻole nā ​​​​mea hana ʻoihana?
2. Ke ola hana: Pehea ka lōʻihi o ka hoʻohana ʻana i ka epoxy ma mua o ka hoʻōla ʻana?
3. Manawa Cure: Pehea ka lōʻihi e ho'ōla ai ka huahana a ho'ōla piha ʻia me ka hoʻohana ʻana i ka epoxy?
4. Mahana: Ma ka mahana hea e hana ai ka hapa? Inā makemake ʻia ke ʻano, ua hoʻāʻo ʻia ka epoxy i koho ʻia no nā wela wela?

Nā hiʻohiʻona:

• ʻO nā waiwai thixotropic kiʻekiʻe, hiki ke hoʻohana ʻia i ka hana façade.
• ʻO nā hiʻohiʻona palekana kaiapuni kiʻekiʻe (nā ʻōnaehana hoʻōla ʻole solvent).
• Hiki ke hoʻololi kiʻekiʻe.
• Ka ikaika pili kiʻekiʻe.
• Kiʻekiʻe uila insulation.
• ʻO nā waiwai mechanical maikaʻi loa.
• Kūleʻa maikaʻi ka mahana a me ka wai.
• Paʻa mālama maikaʻi, manawa mālama a hiki i 1 makahiki.

Noi:No ka hoʻopaʻa ʻana i nā metala like ʻole a me nā metala ʻole, e like me nā magnets, nā alumini alumini, nā sensor, etc.