Ka hopena o ka Methyl Hydroxyethyl Cellulose ma ka Epoxy Resin Matrix

ʻO ka Methyl Hydroxyethyl Cellulose (MHEC) he wai-soluble cellulose ether i hoʻohana nui ʻia i ka ʻoihana kūkulu e like me ka mea hoʻololi a me ka rheology i nā ʻōnaehana cementitious. Ua ʻike ʻia e hoʻomaikaʻi i nā waiwai kahe, ka hana, a me ka hoʻopili ʻana i nā mea cementitious, e hana ia i mea hoʻohui kūpono no ka hoʻoheheʻe ʻana i ka lepo, mortar, a me ka grout formulations. Eia naʻe, ua emi iki ka manaʻo o ka hopena o MHEC i nā waiwai o nā matrices resin epoxy.

ʻO nā resins Epoxy kahi papa o nā polymers thermosetting i hoʻohana nui ʻia i ka aerospace, automotive, a me nā ʻoihana kūkulu ma muli o ko lākou mau ʻano mechanical maikaʻi loa, ke kūpaʻa kemika, a me ka hoʻopili ʻana i nā substrate like ʻole. Eia nō naʻe, hiki iā lākou ke palupalu a hōʻike i ka ikaika haʻahaʻa haʻahaʻa, e kaupalena ana i kā lākou hoʻohana ʻana i kekahi mau noi. No ka hoʻoponopono ʻana i kēia pilikia, ua noiʻi nā mea noiʻi i ka hoʻohana ʻana i nā mea hoʻohui like ʻole, me ka cellulose ethers, e hoʻomaikaʻi ai i ka paʻakikī a me ka hopena o ka epoxy resins.

Ua hōʻike kekahi mau haʻawina i ka hoʻohana ʻana o MHEC i mea hoʻohui i nā matrices resin epoxy. Eia kekahi laʻana, he haʻawina na Kim et al. (2019) i noiʻi i ka hopena o ka MHEC ma nā waiwai mechanical o nā composites-based epoxy. Ua ʻike nā mea noiʻi ʻo ka hoʻohui ʻana o MHEC i hoʻomaikaʻi i ka paʻakikī o ka haʻihaʻi a me ka ikaika o ka hopena o nā composites, a me ke kūpaʻa wela a me ka pale wai. Ua hoʻopuka nā mea kākau i kēia mau hoʻomaikaʻi i ka hiki o MHEC ke hana i nā paʻa hydrogen me ka epoxy resin matrix, ka mea i hoʻonui i ka adhesion interfacial a pale i ka hoʻolaha ʻana.

ʻO kekahi haʻawina a Pan et al. (2017) i noiʻi i ka hopena o ka MHEC ma ka hana ho'ōla a me nā waiwai mechanical o kahi ʻōnaehana resin epoxy. Ua ʻike ka poʻe noiʻi ʻo ka hoʻohui ʻana o MHEC i hoʻopaneʻe i ka manawa hoʻōla a hoʻemi i ka mahana hoʻōla kiʻekiʻe o ka resin epoxy, i pili i ke ʻano hydrophilic o MHEC. Eia nō naʻe, ʻo ka hoʻohui ʻana o MHEC i hoʻomaikaʻi i ka ikaika tensile a me ka elongation ma ka haki ʻana o ka resin epoxy i hoʻōla ʻia, e hōʻike ana e hiki i ka MHEC ke hoʻomaikaʻi i ka maʻalahi a me ka paʻakikī o ka matrix resin epoxy.

Ma waho aʻe o ka hoʻomaikaʻi ʻana i nā waiwai mechanical o nā matrices resin epoxy, ua hōʻike pū ʻia ʻo MHEC i ka hopena maikaʻi i nā waiwai rheological o nā ʻōnaehana epoxy. Eia kekahi laʻana, he haʻawina na Li et al. (2019) i noiʻi i ka hopena o MHEC ma ka rheology a me nā waiwai mechanical o kahi adhesive epoxy. Ua ʻike nā mea noiʻi ʻo ka hoʻohui ʻana o MHEC i hoʻomaikaʻi i ka ʻano thixotropic o ka mea hoʻopili a hoʻemi i ka hoʻonohonoho ʻana o nā mea hoʻopihapiha. ʻO ka hoʻohui ʻana o MHEC i hoʻomaikaʻi i ka ikaika adhesion a me ka hopena hopena o ka adhesive.

Ma ka holoʻokoʻa, ʻo ka hoʻohana ʻana i ka MHEC ma ke ʻano he mea hoʻohui i nā matrices resin epoxy ua hōʻike i nā hopena hoʻohiki i ka hoʻomaikaʻi ʻana i nā waiwai mechanical, paʻakikī, a me nā ʻano rheological o ka ʻōnaehana. ʻO ka hiki i ka MHEC ke hana i nā paʻa hydrogen me ka epoxy resin matrix i manaʻo ʻia he ʻano kī nui ma hope o kēia mau hoʻomaikaʻi ʻana, hiki ke alakaʻi i ka hoʻonui ʻana i ka hoʻopili interfacial a me ka hoʻohaʻahaʻa ʻana i ka māwae. Eia nō naʻe, pono ka noiʻi hou ʻana e hoʻomaopopo pono i ka hopena o ka MHEC ma nā waiwai o nā matrices resin epoxy a hoʻopaʻa pono i ka hoʻohana ʻana i kēia cellulose ether i nā hoʻokumu epoxy-based.