Ma ke ʻano he mea i hui pū ʻia,resin polyester momona ʻoleua hoʻohana maikaʻi ʻia i nā uhi ʻana, nā plastik i hoʻoikaika ʻia i ke aniani fiber, nā pōhaku hana, nā hana lima, a me nā ʻoihana ʻē aʻe. Eia nō naʻe, ʻo ka melemele kala o nā resins unsaturated he pilikia mau ia no nā mea hana. Wahi a nā loea, ʻo nā kumu maʻamau o ka melemele o nā resins unsaturated e komo pū me kēia:
1. I ke kaʻina hana synthesis esterification o ka resin unsaturated, ma muli o ka melemele ʻelemakule thermal i hoʻokumu ʻia e ke kiʻekiʻe o ka mahana, ʻo ka mahana esterification maʻamau o ka resin unsaturated he 180 ~ 220 ° a ʻoi aku paha, ma kēia mahana ua maʻalahi ka resin e huli i ka melemele ma muli o ka ʻelemakule thermal, e hoʻopilikia ana i ke ʻano o nā huahana resin.
2. ʻO ka melemele i hoʻokumu ʻia e ka hōʻike ʻana o ka resin i nā kukuna ultraviolet ke kumu nui ʻia e ke alo o nā apo benzene i loko o ka resin (me nā waikawa dibasic aromatic/anhydrides a me nā apo benzene i hoʻokomo ʻia e ka styrene), hiki ke kumu o ka oxidation thermal o nā hui aromatic i nā mahana kiʻekiʻe. ʻO ka degradation, he mea maʻalahi ia i nā hoʻololi uila, e hoʻolilo ana i ka resin i melemele.
3. I ke kaʻina hana o ka hana resin, ua hōʻike ʻia nā mea maka i ka oxygen ma muli o ka hana sila maikaʻi ʻole o ka hāmeʻa. ʻO ke kaulahao molekala o ka polyester unsaturated maʻamau ʻaʻole wale nā hui ester, nā hui meridian, a me nā hui antelope, akā ʻo nā pilina pālua a me nā apo ʻala. Ke hele nei ia i ka hoʻohaʻahaʻa oxidative thermal, a ʻo ka hana maopopo ʻo ia ka melemele o ke kala o ka resin.
4. Ka mana o nā mea hoʻohui e like me nā antioxidants, nā mea hoʻopale polymerization, nā mea hoʻōla, a pēlā aku. Hoʻololi maʻalahi ʻia nā antioxidants Amine i nā radical free nitroxide e kala i ka huahana. ʻO nā mea hoʻopale polymerization i hoʻohana pinepine ʻia, e like me ka hydroquinone, ʻo ia ka Oxidation i loko o nā quinones i ke alo o nā quinones, nona iho ke kala, a laila e hoʻopilikia ana i ke kala o ka resin. Hoʻohana mau kekahi mau mea hana o nā mea hoʻōla i nā ʻōnaehana amine acyl peroxide-tertiary a me nā ʻōnaehana kopa metala ketone peroxide. Resin kala, maʻalahi ke kala.
ʻOiaʻiʻo, aia kekahi mau kumu ʻē aʻe e hoʻolilo ai i ka resin i melemele. Ma ke ʻano laulā, ʻo ka oxygen wela a me nā kukuna ultraviolet nā kumu nui no ka melemele. Hoʻohana ʻia ka waikawa dibasic saturated (a i ʻole acid anhydride) ma kahi o ka waikawa dibasic aromatic (a i ʻole acid anhydride), ʻoiai hiki ke hoʻohana ʻia i kekahi ʻano, hiki ke hoʻomālamalama ʻia ke kala o ka resin, akā no ka noʻonoʻo ʻana i nā mea like ʻole e like me ka hana resin a me ke kumukūʻai, ʻaʻole kūpono kēia ʻano hana.
Wahi a nā loea, me ka hoʻopiha ʻana i ke kinoea inert i ke kaʻina hana a me ka mālama ʻana e pale aku i ka hoʻopili ʻana me ka oxygen i ka hiki, ʻo kahi ʻano hana ʻoi aku ka maikaʻi o ka hoʻohui ʻana i nā antioxidants a me nā mea hoʻomoʻa ultraviolet, hiki ke pale pono i ka melemele o ka polyester retarded. ʻO nā hopena anti-yellowing i ʻōlelo ʻia e ka poʻe loea no nā resins unsaturated:
Ua koho ʻia nā antioxidants ʻaʻohe amines, a hoʻohana pū ʻia nā antioxidants mua a me nā mea kōkua. ʻO nā antioxidants mua he mau phenols i pale ʻia, hiki ke hopu i nā radical free peroxide; ʻo nā antioxidants kōkua he phosphites, kahi e hiki ai ke hoʻoheheʻe i ka hydroperoxide, hiki iā ia ke chelate i nā ion metala e pale aku i ka resin mai ka hoʻololi ʻana o ka oxidative. Inā makemake ʻoe e hoʻomaikaʻi hou aku i ke kūʻē ʻana i ka melemele a me ke kūʻē ʻana i ka wā, ua ʻōlelo ʻia e hoʻohui i kahi mea hoʻomoʻa UV. ʻO ka hoʻohui ʻana i kahi mea hoʻomoʻa UV hiki ke pale pono i ka hanana melemele o nā mea polymer ma lalo o ka hana a nā kukuna ultraviolet, a hāʻawi i ka pale maikaʻi loa i ka huahana, e pale pono ana i ka hōʻemi ʻana o ka ʻōlinolino, ka hana ʻana o nā māwae, nā pehu, a me ka delamination hiki ke hoʻomaikaʻi nui i ke kūʻē ʻana o ka wā o ka huahana, a he hopena synergistic maikaʻi kona i ka wā e hoʻohana pū ʻia me nā antioxidants. ʻOiaʻiʻo, ʻaʻole hiki i ka hoʻohana ʻana i nā antioxidants a me nā mea hoʻomoʻa UV ke hoʻoponopono maoli i ka pilikia o ka melemele, akā i loko o kahi pae, hiki nō ke pale pono i ka melemele oxidative o nā huahana polyester unsaturated, mālama i ka wai wai o ka huahana, a hoʻomaikaʻi i ka maikaʻi o ka huahana.
ʻO kā mākounā resins polyester momona ʻoleloaʻa i nā ʻano hoʻohālike like ʻole, a me nā resins non-yellowing, penei:
Hoʻopuka pū mākoufiberglass pololei roving,nā moena fiberglass, ʻupena fiberglass, a meulana fiberglass roving.
Kāhea iā mā˚ou:
Helu kelepona: +8602367853804
Email:marketing@frp-cqdj.com
Pūnaewele: www.frp-cqdj.com
Ka manawa hoʻouna: Mei-10-2022
