Ma ke ʻano he mea hoʻohuihui,resin polyester unsaturatedua hoʻohana maikaʻi ʻia i nā uhi, nā aniani i hoʻoikaika ʻia i nā plastics, nā pōhaku hana, nā mea hana lima, a me nā māla ʻē aʻe.Eia nō naʻe, he pilikia mau ka melemele o nā resins unsaturated no nā mea hana.Wahi a ka poʻe loea, ʻo nā kumu maʻamau o ka melemele o nā resins unsaturated e pili ana i kēia:
1. I ka wā o ka esterification synthesis kaʻina o ka unsaturated resin, ma muli o ka thermal elemakule yellowing ma muli o ke kiʻekiʻe wela, ka maʻamau esterification ana wela o ka unsaturated resin he 180 ~ 220 ° a oi aku paha, ma keia wela ka resin mea oluolu e huli melemele no ka mea. i ka ʻelemakule wela, e pili ana i ke ʻano o nā huahana resin.
2. ʻO ka melemele ma muli o ka ʻike ʻia ʻana o ka resin i nā kukuna ultraviolet, ʻo ia ke kumu nui o ka loaʻa ʻana o nā apo benzene i loko o ka resin (me nā ʻakika dibasic aromatic/anhydrides a me nā apo benzene i hoʻokomo ʻia e ka styrene), ʻo ia paha ke kumu o ka hoʻoheheʻe wela o ka mea ʻala. pūhui i nā wela kiʻekiʻe.ʻO ka hoʻohaʻahaʻa, hiki ke hoʻololi i ka uila, e hana ana i ka resin melemele.
3. I ke kaʻina hana o ka resin, ua ʻike ʻia nā mea maka i ka oxygen ma muli o ka maikaʻi ʻole o ka hoʻopaʻa ʻana o ka mea hana.ʻAʻole wale nā pūʻulu ester, pūʻulu meridian, a me nā pūʻulu antelope i loko o ke kaulahao mole o ka polyester unsaturated maʻamau, akā ʻo nā paʻa pālua a me nā apo ʻala.Loaʻa ia i ka hoʻohaʻahaʻa ʻana i ka thermal oxidative, a ʻo ka hana ʻike ʻia ʻo ia ke kala melemele o ka resin.
4. ʻO ka mana o nā mea hoʻohui e like me nā antioxidants, polymerization inhibitors, curing agents, etc. ʻO nā antioxidants Amine ua maʻalahi ke hoʻololi i nā radical manuahi nitroxide e kala i ka huahana.ʻO nā mea pale polymerization maʻamau, e like me ka hydroquinone, ʻo ia ka Oxidation i loko o nā quinones i mua o nā quinones, nona ka waihoʻoluʻu iā lākou iho, no laila e pili ana i ke kala o ka resin.Ke hoʻohana mau nei kekahi mau mea hana hoʻōla hoʻōla i nā ʻōnaehana amine acyl peroxide-tertiary a me nā ʻōnaehana kopa metala ketone peroxide.ʻO ka resin kala, maʻalahi ke kala.
ʻOiaʻiʻo, aia nā kumu ʻē aʻe e huli ai ka resin i ka melemele.Ma ka ʻōlelo maʻamau, ʻo ka oxygen thermal a me nā kukui ultraviolet ke kumu nui o ka melemele.Hoʻohana ʻia ka waika dibasic saturated (a i ʻole acid anhydride) ma kahi o ka waika dibasic aromatic (a i ʻole acid anhydride), ʻoiai hiki ke hoʻohana ʻia i kekahi ʻano, hiki ke hoʻomaʻamaʻa ʻia ke kala o ka resin, akā e noʻonoʻo ana i nā mea like ʻole e like me ka hana resin a kumukūʻai, ʻaʻole kūpono kēia ala.
Wahi a ka poʻe akamai, ma kahi o ka hoʻopiha ʻana i ke kinoea inert i ka hana a me ka mālama ʻana i mea e pale ai i ka hoʻopili ʻana me ka oxygen e like me ka hiki, ʻo ke ala ʻoi aku ka maikaʻi o ka hoʻohui ʻana i nā antioxidants a me nā absorbers ultraviolet, hiki ke pale pono i ka melemele o ka polyester retarded.ʻO nā hāʻina anti-yellowing i ʻōlelo ʻia e ka poʻe akamai no nā resins unsaturated:
Ua koho ʻia nā antioxidants ʻaʻole i loaʻa nā amine, a ua hoʻohana ʻia nā antioxidants mua a me nā mea kōkua.ʻO nā antioxidants mua ka mea maʻamau i nā phenols, hiki ke hopu i nā radical manuahi peroxide;ʻO nā antioxidants kōkua he phosphites, ʻoiai ʻo ka decomposing hydroperoxide, hiki iā ia ke chelate i nā ion metala e pale ai i ka resin mai ka discoloration oxidative.Inā makemake ʻoe e hoʻomaikaʻi hou i ka pale melemele a me ka pale ʻana i ke aniau, ʻoi ʻia e hoʻohui i kahi absorber UV.Hiki i ka hoʻohui ʻana i ka UV absorber hiki ke pale maikaʻi i ke ʻano melemele o nā mea polymer ma lalo o ka hana o nā kukuna ultraviolet, a hāʻawi i ka pale maikaʻi loa i ka huahana, pale maikaʻi ʻia ʻO ka hōʻemi ʻana o ka ʻālohilohi, ka hana ʻana o nā māwae, nā puʻupuʻu, a me ka delamination hiki ke hoʻomaikaʻi maikaʻi i ka pale ʻana i ka wā. o ka huahana, a he hopena synergistic maikaʻi ke hoʻohana pū ʻia me nā antioxidants.ʻOiaʻiʻo, ʻaʻole hiki i ka hoʻohana ʻana i nā antioxidants a me nā UV absorbers ke hoʻoponopono i ka pilikia o ka melemele, akā i loko o kekahi ʻano, hiki iā ia ke pale maikaʻi i ka melemele oxidative o nā huahana polyester unsaturated, e mālama pono i ka watercolor a hoʻomaikaʻi i ka maikaʻi o ka huahana.papa.
ʻO kā mākouresin polyester unsaturatedloaʻa i nā ʻano hiʻohiʻona like ʻole, a me nā resins non-yellowing, penei:
Hoʻopuka pū mākoufiberglass hele pololei,moena fiberglass, mesh fiberglass, aulana fiberglass kaʻapuni.
Kāhea iā mā˚ou:
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Ka manawa hoʻouna: Mei-10-2022
