E aʻo e pili ana i ka hoʻololi a me ka paʻakikī o ka Epoxy Resin E51

2022-10-17

1. Introduction


  Epoxy resin E51 has low viscosity, high epoxy value and curing effect. Its disadvantages are high brittleness and low toughness; E20 and E12 epoxy resins have the advantages of high adhesion and good toughness, but the disadvantage is low hardness. Mix the three kinds of epoxy resins in proportion. The new mixed resin has the characteristics of E51 resin with high activity, good curing effect and high hardness, as well as the advantages of good toughness of E20 and E12 medium long molecular chains. After curing with self-made mixed amine, it improves the performance of the cured product and overcomes the disadvantage of poor comprehensive performance after curing with a single epoxy resin.


Epoxy Resin E51


2. Hoʻokolohua


  a) E hoʻāʻo ke aliʻi i kāna hoʻopaʻi. Aerobic resin E12, E20, E51, lole polyether, polyether lua lole, mea ho'ōla accelerator; Xylene; N-Butanol.


  b) Nā mea kani nui. Kiʻekiʻe wikiwiki epoxy resin disperser; ʻAila uila; UTM4000 series microcomputer controlled electronic universal testing machine; ʻO ka mea nānā wela wela ʻokoʻa Thermogravimetric EXSTAR6300.


  c) Hoao hoao. 1) Hoʻomākaukau hoʻoheheʻe: hoʻohui i ka n-butanol i loko o ka xylene a hoʻoulu like. 2) Hoʻomākaukau Resin: hoʻohui i ka epoxy resin E12 a me E20 i loko o ka solvent e like me ka hoʻohālikelike, hoʻoulu i ka wikiwiki kiʻekiʻe no 20 mau minuke, hoʻohui. epoxy resin E51 ma hope o ka hoʻoheheʻe ʻia ʻana o ka resin, e hoʻoulu i ka wikiwiki nui a hui like, a e hana i 4 mau ʻano o nā ʻano hui like me nā ʻano like ʻole o nā resins epoxy ʻekolu, ka resin i helu ʻia A, B, C, D. E hoʻomākaukau i ʻekolu mau hopena o ka resin epoxy hoʻokahi. 3) Laʻana hoʻāʻo: hui i ka resin a me ka curing agent me ka epoxy equivalent=1:0.6, 1:0.7, 1:0.8 a me 1:0.9 pakahi, hoʻomaloʻo iā lākou i ka lumi wela, e kau iā lākou ma ka tinplate no ka nānā ʻana, hoʻopaʻa 20mm cylinder no e hoʻāʻo me ka mīkini hoʻāʻo tensile, e ana i ka paʻakikī me ka Shore hardness tester, a e hana i ka ʻike ʻokoʻa wela me ka ʻokoʻa thermal analyzer.


3. Nā hopena a me nā kūkākūkā


  a) Nānā piʻo. E51, E12 a me B a me D i loko o ka resin he mau kihi kulou ma lalo o 90 ° a i like paha. ʻO ka liʻiliʻi liʻiliʻi o ka haʻihaʻi ʻo E12, 60 °; D He 70 ° ka huina ha'iha'i ha'iha'i o ka hamo; E51 He 85 ° ka huina haʻihaʻi. ʻO ka resin hui pū ʻia he kūpaʻa haʻihaʻi maikaʻi. Ma ka lima hoʻokahi, he mau kaulahao lōʻihi, waena a pōkole nā ​​resins ʻekolu, a ua kūpono ke ʻano. Hoʻopaʻa ʻia ka pono o ke kaulahao lōʻihi i ka wā o ka hui ʻana. ʻO ka lōʻihi, waena a me ka pōkole keʻa doping e ʻoi aku ka like o ka puʻu ʻana o ke koʻikoʻi; Ma ka ʻaoʻao ʻē aʻe, pili ka ʻāpana kaulahao maʻalahi i ka amine i hui ʻia i ka ʻupena o ka resin epoxy, ka hopena o ka hoʻokaʻawale ʻana i ka micro phase i ka wā o ka hoʻōla ʻana, kahi i hana ai i kahi ʻōnaehana paʻa a wehe ʻole, e uhaʻi ana i ka kūlike o ke keʻa kumu. -pili pūnaewele. Hoʻopili kēia pūnaewele i ka hoʻopuehu ʻana i ke koʻikoʻi, e hana ana i ka deformation plastic i loko o ka huahana i hoʻōla ʻia, no laila e hoʻonui ai i ka paʻakikī o 111.


  b) Ho'āʻo tensile. Ua lawe ʻia ka hoʻāʻo tensile ma kahi laʻana cylindrical 20mm. ʻO ka ikaika tensile o epoxy resin E51 ʻo 16.176MP, ʻo 5196.13N ka haki ʻana, a ʻo 5.24mm ka deformation; ʻO ka ikaika tensile o ka resin D i hoʻololi ʻia ʻo 16.053MP, ʻo ka haki ʻana ʻo 5114.97N, a ʻo ka deformation ʻo 5.63mm. Hōʻike nā hopena hoʻāʻo ʻo ka ratio like maikaʻi loa he 1:0.8. Hiki ke ʻike ʻia ʻo ke kaumaha o ka molecular, ka hana ʻana, ka crosslinking density o ka epoxy resin, ka hoʻohālikelike ʻana o kēlā me kēia ʻāpana o ka ʻōnaehana, a me ka hoʻohui ʻana o ka lāʻau lapaʻau nā kumu nui e pili ana i nā waiwai mechanical.


  c) Ana paakiki. Ua hoʻāʻo ʻia ka paʻakikī o ka epoxy resins. Ua hōʻike ʻia nā hopena i ka wā o ka ratio like ʻana he 1:0.8, ʻo nā waiwai paʻakikī Shore o resin D a me E51 he 96.2 a me 95. Me ka piʻi ʻana o ka nui o ka mea ho'ōla, emi ka paʻakikī, akā ma ka laulā, ka nui o ka lāʻau lapaʻau. He liʻiliʻi ka hopena i nā huahana i ho'ōla ʻia, a ʻoi aku ka mana o ka nui o ka epoxy resin.


  d) Ka nānā 'ana i ka wela okoa. Ua kālailai ʻia ka resin i hoʻōla ʻia e ka ʻokoʻa thermal analysis. ʻO 20 ℃ / min ka helu hoʻomehana. ʻO nā hopena penei:


  Me ka piʻi ʻana o ka mahana, ʻelua mau piko o ka pihi, a ʻaʻole i pau ka hopena hoʻōla ma ka lumi wela. Hoʻokaʻawale ʻia ke kaʻina hana hoʻōla i ʻelua mau ʻāpana, ʻo ka mahana mālama ʻana he 85 ℃ a me 132 ℃, ʻo ka nui o ka lāʻau lapaʻau he liʻiliʻi ka hopena i ka mahana hoʻōla.


  Me ka piʻi ʻana o ka mahana, ʻaʻole ʻike ʻia ka piko mua o ka resin E12 a me E20, ʻo ka hoʻōla ʻana o ka resin E12 a me E20 ua paʻa i ka lumi wela, a ʻike ʻia ka lua kiʻekiʻe ma 139 ℃ a me 141 ℃. ʻIke ʻia nā piko ʻelua o E51, e ʻike ʻia ana ma 93 ℃ a me 138 ℃, a ʻaʻole i pau ka hopena o ka hoʻōla ʻana o ka lumi. Hoʻoholo ka epoxy like i ka mahana ho'ōla o ka pae mua. ʻO ka liʻiliʻi o ka waiwai like, ʻoi aku ka haʻahaʻa o ka mahana hoʻōla a ʻoi aku ka nui o ke degere hoʻōla; ʻO ka meaʻino ka mea'ē aʻe; He liʻiliʻi ka hopena o ka lua o ka mālama ʻana i ka mahana.


  Loaʻa nā piko ʻelua no ka mea ʻoi aku ka wikiwiki o ka hoʻohui ʻana o ka hui amine mua a me ka pūʻulu epoxy i loko o ka mea hoʻōla ma mua o ka hui amine lua a me ka pūʻulu epoxy, ʻo ia ka mea e ʻike ai ka piko exothermic mua ma kahi o 93 ℃. Ke hoʻomau nei ka hopena, piʻi ka degere o ka ʻōnaehana, me ka paʻakikī i ka neʻe ʻana o ka ʻāpana kaulahao molecular. Ke hoʻokiʻekiʻe hou ka mahana, hiki i ka hui epoxy ke hoʻomau i ka hana me ka pūʻulu amine lua me ka haʻahaʻa haʻahaʻa haʻahaʻa a me ka hydrogen ikaika ma ka pūʻulu kikowaena, ʻike ʻia ka lua exothermic peak kokoke i 138 ℃, hiki ke kuhikuhi ʻia i ka lua. ka hopena hou o ka hui amine lua, pūʻulu kikowaena a me ka hui epoxy.


epoxy resin e51

epoxy resin e51

ʻO ka pihi DTA o ka resin i hoʻōla ʻia DʻO ka pihi DTA o ʻekolu mau epoxy resins i hoʻōla ʻia inā he 1:0.8 ka ratio like


4. Panina


  (1) Ua hoʻoholo ʻia ka hapa o ka resin i hoʻololi ʻia a me ka nui o ka mea hoʻōla. Hoʻohui ʻo Resin D i nā waiwai maikaʻi loa o nā ʻano resins epoxy ʻekolu, a he paʻakikī maikaʻi, paʻakikī a me ka ikaika paʻa. (2) Ua hoʻonui ʻia ka ʻoki ʻoki ʻana o ka ʻōnaehana epoxy resin i hoʻololi ʻia (15% ~ 17%), ua hoʻonui ʻia ka deformation tensile (0.3 ~ 0.5mm), ua emi ka ikaika tensile (0.05 ~ 0.16MP), a ua mau ka ikaika tensile ma luna. 16MP. (3) ʻOi aku ka paʻakikī o ka E51 i hoʻololi ʻia. (4) ʻAʻole i pau ka hoʻōla ʻana o ka resin D i hoʻōla ʻia ma ka lumi wela. Ua māhele ʻia ka hopena i ʻelua mau ʻanuʻu, ʻo ka mahana mālama ʻana he 87 ℃ a me 136 ℃. ʻOi aku ka maikaʻi o ka hoʻōla ʻana o kēia ʻōnaehana ma 85 ~ 140 ℃.


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