Ua kama'āina ka Epoxy i nā mea a pau.Ua kapa ʻia kēia ʻano mea organik i ka resin artificial, resin glue, etc. He ʻano koʻikoʻi loa ia o ka plastic thermosetting.Ma muli o ka nui o nā pūʻulu ikaika a me nā polar, hiki ke hoʻopili ʻia nā molekala resin epoxy a hoʻōla ʻia me nā ʻano mea hoʻolaʻa like ʻole, a hiki ke hoʻokumu ʻia nā waiwai like ʻole me ka hoʻohui ʻana i nā mea hoʻohui like ʻole.

Ma ke ʻano he thermosetting resin, loaʻa ka epoxy resin i nā pono o nā waiwai kino maikaʻi, insulation uila, adhesion maikaʻi, kūpaʻa alkali, kūpaʻa abrasion, hana maikaʻi loa, kūpaʻa a me ke kumu kūʻai haʻahaʻa.ʻO ia kekahi o nā resins kumu nui i hoʻohana ʻia i nā mea polymer.

I kēia manawa, hoʻohana nui ʻia ka epoxy resin i ka ʻoihana uhi, a ʻo ka uhi i hana ʻia me ia e like me ka substrate i kapa ʻia ʻo epoxy resin coating.Ua hōʻike ʻia ʻo ka epoxy resin coating he mea pale mānoanoa hiki ke hoʻohana ʻia e uhi i kekahi mea, mai ka papahele, nā mea uila nui a hiki i nā huahana uila liʻiliʻi, e pale iā lākou mai ka pōʻino a i ʻole ka ʻaʻahu.Ma waho aʻe o ka lōʻihi loa, ʻoi aku ka paʻa o ka epoxy resin coatings i nā mea e like me ka ʻōpala a me ka corrosion kemika, no laila kaulana lākou i nā ʻoihana like ʻole a me nā hoʻohana.

ʻO ka mea huna o ka epoxy coating durability

No ka mea aia ka epoxy resin i ka ʻāpana o ka polymer wai, pono ia i ke kōkua o ka mālama ʻana i nā mea hana, nā mea hoʻohui a me nā puaʻa e hoʻokomo i loko o kahi uhi epoxy kūʻokoʻa.I waena o lākou, hoʻohui pinepine ʻia nā nano oxides e like me nā puaʻa a me nā mea hoʻopiha i nā uhi epoxy resin, a ʻo nā ʻelele maʻamau he silica (SiO2), titanium dioxide (TiO2), alumini oxide (Al2O3), zinc oxide (ZnO), a me nā mea ʻona honua.Me ko lākou nui kūikawā a me ka hoʻolālā, hōʻike kēia mau nano oxides i nā ʻano kino kino a me nā kemika, hiki ke hoʻonui nui i nā waiwai mechanical a anti-corrosion o ka uhi.

ʻElua mau hana nui no nā ʻāpana nano oxides e hoʻomaikaʻi i ka hana pale o nā uhi epoxy:

ʻO ka mea mua, me kona liʻiliʻi liʻiliʻi, hiki iā ia ke hoʻopiha pono i nā micro-cracks a me nā pores i hoʻokumu ʻia e ka shrinkage kūloko i ka wā o ka hoʻōla ʻana o ka resin epoxy, e hoʻemi i ke ala diffusion o nā media corrosive, a hoʻonui i ka hana pale a me ka pale o ka uhi;

ʻO ka lua, ʻo ia ka hoʻohana ʻana i ka paʻakikī kiʻekiʻe o nā ʻāpana oxide e hoʻonui i ka paʻakikī o ka resin epoxy, a laila e hoʻonui ai i nā waiwai mechanical o ka uhi.

Eia kekahi, hiki i ka hoʻohui ʻana i ka nui kūpono o nā ʻāpana nano oxide hiki ke hoʻonui i ka ikaika paʻa o ka epoxy coating a hoʻonui i ke ola lawelawe o ka uhi.

ʻO ke kuleana onano silicapauka:

Ma waena o kēia mau oxides nanopowders, nano silicon dioxide (SiO2) he ʻano kiʻekiʻe.ʻO ka silica nano he mea metala ʻole ʻole me ke kūpaʻa wela maikaʻi loa a me ke kūpaʻa ʻana.ʻO kona mokuʻāina molekala he ʻano pūnaewele ʻekolu-dimensional me [SiO4] tetrahedron ma ke ʻano he kumu kumu.I waena o lākou, pili pono ka oxygen a me ka silicon atoms e nā covalent bonds, a ikaika ka hale, no laila he mau waiwai kemika paʻa, maikaʻi ka wela a me ka pale ʻana i ka wā, etc.

Hoʻokani nui ʻo Nano SiO2 i ka hana o ka anti-corrosion filler i ka uhi epoxy.Ma ka lima hoʻokahi, hiki i ka silicon dioxide ke hoʻopiha pono i nā micro-cracks a me nā pores i hana ʻia i ke kaʻina hana hoʻōla o ka resin epoxy, a hoʻomaikaʻi i ke kūpaʻa ʻana o ka uhi;ma ka lima 'ē aʻe, , Hiki i nā hui hana o nano-SiO2 a me ka epoxy resin ke hana i nā wahi pili kino / kemika ma o ka adsorption a i ʻole ka hopena, a hoʻokomo i nā paʻa Si-O-Si a me Si-O-C i loko o ke kaulahao mole e hana ai. kahi ʻōnaehana ʻekolu-dimensional e hoʻomaikaʻi i ka hoʻopili ʻana i ka uhi.Eia kekahi, hiki i ka paʻakikī kiʻekiʻe o nano-SiO2 ke hoʻoikaika nui i ka pale ʻana o ka uhi, a laila e hoʻolōʻihi i ke ola lawelawe o ka uhi.