共查询到19条相似文献,搜索用时 156 毫秒
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主要介绍了SBS改性微表处技术,针对SBS改性沥青高黏度、难乳化的特点,通过对乳化剂的性能研究,提高其乳化能力,达到对SBS改性沥青较好的乳化效果,并对比SBR改性微表处测试了其乳化沥青及沥青混合料的技术指标,结果表明:SBS改性微表处可以达到SBR改性微表处的应用效果,并在有些指标上优于SBR改性微表处,并且SBS改性微表处在经济效益上具有较大优势。 相似文献
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木素胺乳化剂工业放大试验成功广州石油化工总厂研究所最近与丹东市公路处合作,应用慢裂型木素胺乳化剂做了乳化沥青制造试验和沥青路面中粒式稀浆封层试验,取得良好结果。木素胺沥青乳化剂可用于制备阳离子乳化沥青,这种乳化沥青为阳离子慢凝望乳化液,能与骨料充分拌... 相似文献
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Sulphonates that work as emulsifiers in asphalt emulsification are generated in-situ by partial sulphonation of asphalt. More stable emulsions can be made by using sulphonated asphalt with a conventional emulsifier. To demonstrate, the sodium oleate was used as co-emulsifier. Effect of sulphonation time, temperature, acid concentration and amount of sulphonated asphalt on emulsion properties is studied. Use of 2 factorial design revealed that acid concentration, reaction time and temperature are significantly important parameters. The stability of emulsion increases with increased severity of reaction, that is, higher acid concentration, reaction time and temperature. In the most severe conditions, the asphalt forms coke-like polymerized matter that is not emulsifiable. The most stable emulsion was prepared with asphalt that was sulphonated at slightly milder conditions, namely, 69 °C, 60 minutes and 98 % acid. Storage stability, demulsibility and viscosity improved by 41.7 %, 46.8 % and 45.7 % respectively, with 40% of sulphonated asphalt. 相似文献
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首先用三甲胺盐酸盐和环氧氯丙烷反应合成出中间体,同时棕榈酸与N,N二甲基丙二胺反应合成烷基酰胺,烷基酰胺与中间体进行季胺化反应,合成双季铵盐类阳离子沥青乳化剂,用该乳化剂对道路石油沥青进行乳化效果验证,测试结果表明该乳化剂应用效果很好,达到道路用乳化沥青的技术要求,是一种比较有发展前途的阳离子沥青乳化剂。 相似文献
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ABSTRACT Sulphonates that work as emulsifiers in asphalt emulsification are generated in-situ by partial sulphonation of asphalt. More stable emulsions can be made by using sulphonated asphalt with a conventional emulsifier. To demonstrate, the sodium oleate was used as co-emulsifier. Effect of sulphonation time, temperature, acid concentration and amount of sulphonated asphalt on emulsion properties is studied. Use of 2 factorial design revealed that acid concentration, reaction time and temperature are significantly important parameters. The stability of emulsion increases with increased severity of reaction, that is, higher acid concentration, reaction time and temperature. In the most severe conditions, the asphalt forms coke-like polymerized matter that is not emulsifiable. The most stable emulsion was prepared with asphalt that was sulphonated at slightly milder conditions, namely, 69 °C, 60 minutes and 98 % acid. Storage stability, demulsibility and viscosity improved by 41.7 %, 46.8 % and 45.7 % respectively, with 40% of sulphonated asphalt. 相似文献
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新型沥青乳化剂的合成与性能测试 总被引:2,自引:0,他引:2
以烷基二胺、环氧丙烷和氯乙酸为原料合成出N,N,N-(2-羟基丙基)(二乙酸基)-N:N’-十八烷基乙酸基丙撑二胺盐酸盐新型甜菜碱阳离子沥青乳化剂,并利用红外光谱对产物结构进行鉴定。乳化性能测试表明,该乳化剂具有很好的乳化能力,为慢裂快凝型沥青乳化剂。利用表面张力法,测定了该乳化剂的临界胶束浓度为9.27×10^-5mol/L,在临界胶束浓度下的表面张力为43.11×10^-3N/m。该乳化剂合成工艺简单,是一种比较有发展前途的慢裂快凝型沥青乳化剂。 相似文献
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以壬基酚和甲醛为原料经缩合反应制备出中间体双(2-羟基-5-壬基苯基)甲烷,并与环氧氨丙烷和三乙胺反应,合成出一种新型Gemini型阳离子沥青乳化剂双{5-壬基-2-[(2’-羟基-3’-三乙基氯化铵)丙氧基苯基]}甲烷。详细研究了合成条件对反应的影响,得出了合成最佳工艺条件。用该乳化剂对道路沥青进行了乳化效果考察,表明该乳化剂乳化性能良好。该乳化剂合成工艺简单,是一种比较有发展前途的阳离子中裂沥青乳化剂。 相似文献
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沥青再生剂的再生效果与扩散性能研究 总被引:2,自引:0,他引:2
考察了4种沥青再生剂对老化50A道路沥青和从沈大高速公路路面回收的旧SBS改性沥青的再生效果,采用老化沥青静态再生针人度试验研究了4种沥青再生剂在老化或回收沥青中的扩散性能。结果表明,自制沥青再生剂对老化50A沥青具有较好再生效果,适宜加入量[m(再生剂)/m(老化沥青)]为10%;自制沥青再生剂和进口沥青再生剂A对回收SBS改性沥青均具有较好再生效果,适宜加入量为5%;可用再生剂在老化沥青中扩散3~4h时的针入度评价再生剂的扩散效果。 相似文献
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