E aʻo i ka hana ʻana o bisphenol A epoxy resin E-51

2022-10-25


  Eokixy resin generally refers to a polymer oligomer containing two or more epoxy groups, with aliphatic, alicyclic, aromatic and other organic compounds as the skeleton, and capable of forming useful thermosetting products through the reaction of epoxy groups. It is a kind of substance in various forms from liquid to open dense and solid. It has little value for independent use, and only the non-melting polymer with three-dimensional network structure formed by reacting with curing agent has application value, so it belongs to thermosetting resin. The epoxy resin synthesized with bisphenol A as the main raw material is called bisphenol A epoxy resin, which has been put into production in Switzerland, the United States and Germany successively. 


In China, it began to be produced in the 1960s, accounting for about 90% of the total output of epoxy resin in China. It is the epoxy resin with the largest output and the most widely used at present. E-51 belongs to this kind of resin, also known as E-type epoxy resin. In the domestic unified brands, E represents bisphenol A epoxy resin, and the number represents two digits after the decimal point of the epoxy value. For example, epoxy resin E-51 hōʻike i ka bisphenol A epoxy resin me ka waiwai epoxy o 0.51. No ka E-51 ka bisphenol A ʻano epoxy resin me ka haʻahaʻa haʻahaʻa haʻahaʻa molecular paona a me ka haʻahaʻa haʻahaʻa o ka kulina, nona ka wehe maikaʻi loa, ke kū ʻana i ka corrosion a me ka hana insulation uila maikaʻi. Hiki ke hoʻohana ʻia no ka hoʻomākaukau ʻana i ka mortar sima a me ka uhi ʻana o ka pā kūikawā i ka anti-corrosion kemika; Hana i ka papahele anti-corrosion a me ka epoxy anti-corrosion coating; Ka hana ʻana i nā ipu plastik i hoʻoikaika ʻia i ka fiber aniani, nā pahu pahu, nā paipu a i ʻole nā ​​​​lining plastic fiber glass i hoʻoikaika ʻia; Hiki ke hoʻohana ʻia e hana i kahi ʻano hui. Ma ke ʻano o ka insulation uila, hiki ke hoʻohana ʻia e encapsulate capacitors, transformers, etc., no ka hana ʻana i nā papa insulating, etc., a hoʻohana nui ʻia i ka pena, nā mea uila, nā mea uila, nā ʻenekini uila, nā ʻenehana kīwila a me nā ʻano ʻē aʻe.


EPOXY RESIN E51

1. Kaʻina Hana ʻenehana


  Ma kēia pepa, ua lawe ʻia kahi kaʻina hana ʻelua no ka hana ʻana i ka E-51, a hoʻohui ʻia ka alkali i ʻelima mau manawa e hōʻemi i ka nalowale o ka hydrolysis o ka epichlorohydrin i loko o ke ʻano alkaline. Hōʻike ʻia ke kaʻina hana kikoʻī ma ka Figure 1.


  ʻO ke kaʻina hana: e hoʻokomo ka uila uila i ka bisphenol A i loko o ka ipu hao mua, e ana a hoʻohui i ka epoxy chloropropane, e hoʻomaka i ka hui ʻana, wela me ka mahu i 56 ℃ no ka hoʻoheheʻe ʻana, e hoʻohui i ka ʻāpana mua o ka wai caustic soda 10 ~ 15 mau minuke ma hope o ka hemo ʻana, hoʻohui i ka ʻO ka ʻāpana ʻelua o ka wai hoʻoheheʻe wai hoʻokahi ma hope o ka pane ʻana ma 56 ℃ no 2 mau hola, e mālama i ka 56 ℃ no ka pane ʻana no 1 hola, a hoʻouna i ka ipu hao. Ke 63 ℃ ka wela o ka hopena a he 21 kPa ke kaomi hana, 1. Hoʻohui ʻia ke kolu a me ka ʻehā o ka wai hoʻoheheʻe wai ma Sh; A laila e hoʻohui i ka wai maʻemaʻe, dehydrate ma 70 ℃ no 10 min, a hoʻouna i ka ipu hoʻihoʻi. Hoʻonohonoho ʻia ke kaomi i 21 kPa? Hoʻonohonoho ʻia ka mahana ma 110 ℃, a hoʻomaka ka wela e hoʻoneʻe i ka epichlorohydrin; Ke piʻi ka mahana i 110 ℃ a hiki i ke kaomi i 21 kPa, e hoʻomau i ka hoʻokiʻekiʻe ʻana i ka mahana i 130 ℃ a e hoʻemi mālie i ke kaomi i lalo o 4 kPa; Ke piʻi ka mahana i 130 ℃ a piʻi ke kaomi ma lalo o 4 kPa, mālama ia no 30 min; A laila, wehe ʻia ka mea ma 130 ℃ no 1h a hoʻouna ʻia i ka ipu hoʻomaʻemaʻe. E hoʻohui i kahi nui o ka catalyst ma 84-85 ℃ no 1.5h, a laila hoʻohui i ka ʻelima alkali e like me ka hydrolysis o ka chlorine; A laila e hoʻohui i ka toluene no ka unuhi ʻana a me ka hoʻokaʻawale ʻana, hoʻoulu a me ka wela i 800 ℃, hoʻoheheʻe no 15 min, a e kū no 30 min ma mua o ka kaʻawale. Hoʻomau ʻia ka hoʻoneʻe ʻana o ka toluene resin solution luna a hoʻokaʻawale ʻia i loko o ka ipu hoʻomaʻemaʻe lua, holoi ʻia me ka wai i kū ʻole, a laila hoʻouna ʻia i ka waihona kānana mua ma hope o ka maloʻo. Hoʻopili ʻia ka huahana kānana mua e ka kānana no ka wehe ʻana i nā haumia paʻa a hoʻouna ʻia i ka waihona kānana huahana. Hoʻouna ʻia ka huahana kānana E-51 i loko o ka wehe ʻana i ka solvent a laila hoʻemi ʻia i 4 kPa ma 140 ℃ e hoʻihoʻi hou i ka toluene; E hoʻokiʻekiʻe hou i ka mahana i 150 ℃, a mālama i ke kaomi ma 4 kPa no 30 min; Ma hope o ka huki ʻana i ka mahu no 2h a me ka wehe ʻana o ka nitrogen no 1h, e hoʻouna ʻia nā laʻana mai ka ipu desolvent i ka pahu huahana semi-finished ma hope o ka hoʻomaʻamaʻa ʻana, a laila hoʻouna ʻia i ka pahu huahana i hoʻopau ʻia ma hope o ka kānana pololei ʻana. E hoʻopiliʻia nā huahana i ka mīkini hoʻopihapiha no ka hoʻopihaʻana. Hōʻike ʻia nā hōʻailona mana kikowaena ma ka Papa 1.

Fig. 1 Ke kaʻina hana o ka bisphenol He lāʻau epoxy E-51


epoxy resin E51


  I ka hana ʻana o E-51, ma waho aʻe o ka puka hāmama maʻamau a me nā hopena loop pani, he nui nō hoʻi nā hopena ʻaoʻao, e like me ka hydrolysis o epichlorohydrin a me ka hoʻohui mahina o ka epichlorohydrin a me bisphenol A. Ke hoʻohana nei kēia kaʻina hana i ka epichlorohydrin nui. , ka mea i kekahi manawa keakea i ka hookumuia ana o na hua e like me ka glycerin a me ka non hydrolyzable chlorine, a laila hana hou i ka epichlorohydrin e pale aku i ka hiki ana mai o ka aoao a me ka pau ole o na mea maka e like me ka hiki.

2. Ka Papa Hana Pono


  Wahi a GB / T605-2006, GB / T9281.1-2008, GB / T1677-200, ASTM D1726-2011, GB / T 22314-2008, GB / T1725-2007 a me nā matrices maʻamau aupuni ʻē aʻe, ka pūʻulu mua o E -51 ho'āʻo huahana ua kālailai 'ia e colorimetric paipu, kumu buret, Mettler T50 piha-akomi potentiometric titrator, BLUFF LVDV - Ⅱ + Pro viscometer, Shanghai Jinghong DHG-9042A uila thermostatic blast maloʻo umu Ua hoʻololi 'ia ka waiwai epoxy i epoxy like, hydrolyzed chlorine. , viscosity a me ka mea hiki ole. E nānā i ka Papa 2 no nā hopena hoʻāʻo, e kū ana i ka maʻamau GB/T 13657-2011.


Papa 2 Pono o ka Huahana E-51

Nā mea ho'āʻo

hōʻike Hualoaʻa

Keʻano

ʻO ka wai alohilohi

Mea Haole

None

Ka waihoʻoluʻu a me ka nani / G

≤1

Chroma / Hazen

55

Epoxy Equivalent / g*eq^-1

185.38

Klorine Hydrolyzed * 10^-6

46.79

Viscosity / PA * s, 25 ℃

12.847

Maʻiʻo paʻa / %

99.9



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