摘要
以6-(双(4-羟基-3-甲氧基苯基)甲基)二苯并[c,e]氧磷酸6-氧化物(BDB)、环氧氯丙烷(ECH)为原料,四丁基溴化铵(TBAB)为催化剂,制备生物基环氧树脂(DGEBDB),再与含有β-氨基醇结构的固化剂双酚A(DHABA)固化得到同时具有阻燃以及抗菌功能的生物基环氧树脂(EB/DHABA),通过调节DGEBDB与商用环氧树脂E51的比例探究EB/DHABA的结构与性能的关系。利用核磁共振氢谱(1 H NMR)对DGEBDB的结构进行了表征,通过红外光谱(FT-IR)、热重分析(TG)仪、漆膜冲击器、菌落计数器、垂直燃烧测试仪等对环氧树脂的固化行为、热学、力学、抗菌、阻燃等性能进行测试分析。结果表明:EB/DHABA成功制备,且具有优异的综合性能,玻璃化转变温度最高可以达到130.62℃。当DGEBDB为10%时制备的E 9B 1/DHABA,体系的交联密度最高,为3519 mol/m 3,失重率为10%的温度约为350℃;漆膜的铅笔硬度最高可达5H,同时均具有良好的抗冲击强度和耐溶剂性;对大肠杆菌和金黄色葡萄球菌具有良好的杀灭作用,杀菌率≥99.4%。当DGEBDB为30%时制备的E 7B 3/DHABA,其阻燃效果最好,UL-94等级可以达到V-0级别。
Biobased epoxy resin(DGEBDB)was created using 6-(bis(4-hydroxy-3-methoxyphenyl)methyl)dibenzo[c,e]oxyphosphate 6-oxide(BDB)and epichlorohydrin(ECH)as raw materials and tetrabutylammonium bromide(TBAB)as catalyst.Then,it was solidified with bisphenol A(DHABA),a curing agent containingβ-amino alcohol structure,to obtain a bio-based flame retardant and antibacterial epoxy resin(EB/DHABA)with both intrinsic antibacterial and intrinsic flame retardant properties.The relationship between structure and performance was investigated by varying the ratio of DGEBDB to commercial epoxy resin E51.The structure of DGEBDB was characterized by nuclear magnetic resonance spectroscopy(1 H NMR).The curing behavior,thermal,mechanical,antibacterial and flame retardant properties of epoxy resin were tested and analyzed by FT-IR,TG,paint film impactor,colony counter and vertical combustion tester.The results showed that EB/DHABA had been successfully prepared,the resin had excellent comprehensive properties,and the glass transition temperature could reach 130.62℃.When the content of DGEBDB in the system was 10%,the crosslinking density of the system was highest,which was 3519 mol/m 3.T 10%was about 350℃,and it decreased with the increase of DGEBDB addition.The pencil hardness of the paint film could reach up to 5H and it had good impact strength and solvent resistance.It also had good killing effect on E.coli and S.aureus,with a sterilization rate of 99.4%.The results of vertical combustion test revealed that when the content of DGEBDB in the system reached 30%,the flame retardant effect was the best,and UL-94 grade could reach V-0 grade.
作者
陈明暄
代金月
曹培占
陈夏伟
刘小青
CHEN Mingxuan;DAI Jinyue;CAO Peizhan;CHEN Xiawei;LIU Xiaoqing(Key Laboratory of Marine Materials and Related Technologies,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)
出处
《生物质化学工程》
CAS
2024年第2期13-21,共9页
Biomass Chemical Engineering
基金
宁波市重大科技任务攻关项目(2022Z111)。
关键词
阻燃
本征抗菌
Β-氨基醇
环氧树脂
生物基
flame retardant
intrinsic antibacterial
β-aminoalcohol
epoxy resin
bio-based
