工程塑料应用
工程塑料應用
공정소료응용
Engineering Plastics Application
2015年
9期
35-39
,共5页
改性石墨烯%协同效应%阻燃%环氧树脂
改性石墨烯%協同效應%阻燃%環氧樹脂
개성석묵희%협동효응%조연%배양수지
modified graphene%synergetic effect%flame retardant%epoxy resin
氧化石墨烯(GO)与聚合物的相容性较差，采用长链烷胺对其改性可以提高其与聚合物基体的相容性，同时还可以促进成炭而起到一定的协同阻燃作用。利用十八烷基胺(ODA)对GO功能化制备了十八烷基胺改性氧化石墨烯(GO–ODA)。将GO–ODA填充到环氧树脂／聚磷酸铵(EP／APP)阻燃复合材料中，研究了GO–ODA添加量对复合材料性能的影响。结果表明，少量GO–ODA的加入可以明显提高复合材料的拉伸强度、冲击强度和极限氧指数(LOI)。固定APP阻燃剂的质量分数为20%，在EP／APP阻燃复合材料中加入质量分数1%的GO–ODA时，与EP／APP阻燃复合材料相比，复合材料的拉伸强度和冲击强度均有最大值，分别为67.23 MPa和4.87 kJ／m2，分别提高15.65%和13.79%；复合材料的LOI从30.0%提高到32.3%；热失重测试结果表明，在EP／APP复合材料中加入1%的GO–ODA后，复合材料在650℃时的质量保持率为36.6%，明显高于EP／APP的27.9%；复合材料燃烧后的残炭形貌呈泡孔状网络结构，证实少量的GO–ODA与APP阻燃剂复合使用，可发挥出很好的协同阻燃效果。
氧化石墨烯(GO)與聚閤物的相容性較差，採用長鏈烷胺對其改性可以提高其與聚閤物基體的相容性，同時還可以促進成炭而起到一定的協同阻燃作用。利用十八烷基胺(ODA)對GO功能化製備瞭十八烷基胺改性氧化石墨烯(GO–ODA)。將GO–ODA填充到環氧樹脂／聚燐痠銨(EP／APP)阻燃複閤材料中，研究瞭GO–ODA添加量對複閤材料性能的影響。結果錶明，少量GO–ODA的加入可以明顯提高複閤材料的拉伸彊度、遲擊彊度和極限氧指數(LOI)。固定APP阻燃劑的質量分數為20%，在EP／APP阻燃複閤材料中加入質量分數1%的GO–ODA時，與EP／APP阻燃複閤材料相比，複閤材料的拉伸彊度和遲擊彊度均有最大值，分彆為67.23 MPa和4.87 kJ／m2，分彆提高15.65%和13.79%；複閤材料的LOI從30.0%提高到32.3%；熱失重測試結果錶明，在EP／APP複閤材料中加入1%的GO–ODA後，複閤材料在650℃時的質量保持率為36.6%，明顯高于EP／APP的27.9%；複閤材料燃燒後的殘炭形貌呈泡孔狀網絡結構，證實少量的GO–ODA與APP阻燃劑複閤使用，可髮揮齣很好的協同阻燃效果。
양화석묵희(GO)여취합물적상용성교차，채용장련완알대기개성가이제고기여취합물기체적상용성，동시환가이촉진성탄이기도일정적협동조연작용。이용십팔완기알(ODA)대GO공능화제비료십팔완기알개성양화석묵희(GO–ODA)。장GO–ODA전충도배양수지／취린산안(EP／APP)조연복합재료중，연구료GO–ODA첨가량대복합재료성능적영향。결과표명，소량GO–ODA적가입가이명현제고복합재료적랍신강도、충격강도화겁한양지수(LOI)。고정APP조연제적질량분수위20%，재EP／APP조연복합재료중가입질량분수1%적GO–ODA시，여EP／APP조연복합재료상비，복합재료적랍신강도화충격강도균유최대치，분별위67.23 MPa화4.87 kJ／m2，분별제고15.65%화13.79%；복합재료적LOI종30.0%제고도32.3%；열실중측시결과표명，재EP／APP복합재료중가입1%적GO–ODA후，복합재료재650℃시적질량보지솔위36.6%，명현고우EP／APP적27.9%；복합재료연소후적잔탄형모정포공상망락결구，증실소량적GO–ODA여APP조연제복합사용，가발휘출흔호적협동조연효과。
There is a poor compatibility for graphene oxide(GO) and polymer,so the compatibility can be improved by modifying GO with long chain alkyl amine,meantime,the synergetic effect of flame resistance can also be achieved by the char promotion. GO modified by octadecylamine(ODA) was synthesized by a reaction between ODA and GO. GO-ODA was added into epoxy resin(EP)/ammonium polyphosphate(APP) flame retarded composite with different fractions,the properties of the composites were studied in detail. Results show that the tensile strength,impact strength and limited oxygen index(LOI) of the flame retarded composites are improved by filling with a little GO-ODA. When the mass fraction of APP flame retardant is 20%,the tensile strength and impact strength of EP/APP flame retarded composite with 1% GO-ODA reach the maximum of 67.23 MPa and 4.87 kJ/m2,improved 15.65% and 13.79% respectively,the LOI increases from 30.0% to 32.3%,comparing with EP/APP flame retarded composite. The thermogravimetry test results show that the char residue ratio at 650℃ increases to 36.6% from 27.9% when 1% GO-ODA is added into EP/APP flame retarded composite,another,the residual char of the composite has a special structure of bubble networks,which proves the excellent synergetic effect of flame resistance can be achieved by compounding little GO-ODA and APP flame retardants.
