CN112538275A - 一种用于钢桥铺装的环氧沥青材料及其制备方法 - Google Patents
一种用于钢桥铺装的环氧沥青材料及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种用于钢桥铺装的环氧沥青材料及其制备方法,属于道路铺装用环氧沥青功能材料领域,该环氧沥青材料包括环氧沥青A组分和环氧沥青B组分,A组分与B组分的重量比为1:10~40;所述环氧沥青A组分重量份数如下:环氧树脂60~80份;活性稀释剂20~40份;所述环氧沥青B组分重量份数如下:基质沥青60~100份;聚合物分散剂5~10份;固化剂8~35份;增韧剂10‑30份;通过基质沥青、环氧树脂增韧改性、复配高温固化剂体系等配方与工艺优化,综合改善基质沥青与环氧树脂等的相容性,由此提高环氧沥青功能材料的低温抗开裂性和稳定性。
Description
技术领域
本发明涉及改性环氧沥青功能材料及其制备,属于道路铺装用环氧沥青功能材料领域。
背景技术
环氧沥青是在基质沥青中加入环氧树脂和固化剂等制备的高分子功能材料,由于其固化物加热加压后不会软化或流动,使其与其他热塑性改性沥青相比具有更好的高温稳定性。但环氧沥青材料在低温时易变硬变脆,甚至开裂,从而会导致环氧沥青在各种载荷和水、雾等的作用下加速出现病害,难以满足实际工程应用中钢桥面铺装对混合料性能的要求。为了有效解决这一问题,国内外许多机构投入较大人力物力对此进行研究。研究表明,在环氧树脂中添加橡胶、热塑性树脂、纳米粒子等增韧剂,能有效地改善沥青的低温抗裂性能。正因为如此,专利CN103396673A采用乙烯基单体、废橡胶粉和沥青进行反应制备胶粉环氧树脂沥青材料。专利CN102796387A用硅烷偶联剂对废橡胶粉进行处理,然后加入到沥青、二聚酸等混合物中,通过剪切乳化得到环氧沥青B组分。然后将环氧沥青B组分与环氧树脂混合搅拌得到环氧胶粉沥青材料。日本大有建设公司生产的TAF环氧沥青材料,其拌和温度可达到160oC左右,且容留时间较长,施工可操作性强。但其相容性及韧性较差,价格较高,限制了其广泛应用。为此,在满足环氧沥青材料的强度和韧性,尤其是低温性能的情况下,开发出能够在高温条件下拌和和使用的环氧沥青材料具有重要的现实意义。
发明内容
为了克服现有技术存在的问题,本发明的目的是提供一种用于钢桥铺装的环氧沥青材料及其制备方法,该方法通过基质沥青、环氧树脂增韧改性、复配高温固化剂体系等配方与工艺优化,综合改善基质沥青与环氧树脂等的相容性,由此提高环氧沥青功能材料的低温抗开裂性和稳定性。
本发明是通过以下技术方案来实现的:
一种用于钢桥铺装的环氧沥青材料,其特征在于:该功能材料包括环氧沥青A组分和环氧沥青B组分,A组分与B组分的重量比为1:10~40;所述环氧沥青A组分重量份数如下:环氧树脂60~80份;活性稀释剂20~40份。所述环氧沥青B组分重量份数如下:基质沥青60~90份;聚合物分散剂5~10份;固化剂8~35份;增韧剂10-30份。
所述环氧树脂为双酚A型环氧树脂、脂环族环氧树脂中的一种或它们的混合物;所述活性稀释剂为丁基缩水甘油醚、甘油环氧树脂等中的一种或它们的混合物;所述固化剂为芳胺、双氰胺、三乙醇胺、二氨基二苯砜、酚醛树脂等的一种或它们中的两种混合物
所述增韧剂为液态聚硫橡胶、双酚A聚砜、聚醚酮、聚酯纤维等中的一种或两种混合物。
一种用于钢桥铺装的环氧沥青材料的制备方法,其特征在于包括以下步骤:
(1)将环氧树脂E-51、脂环族环氧树脂、丁基缩水甘油醚三种物质在30-50℃下进行搅拌充分混合,得到环氧树脂A组分。
(2)将聚合物分散剂、增韧剂、固化剂在30-50℃下进行混合得到中间产物。
(3)将基质沥青和步骤(2)制得的中间产物加热到120-140℃,在剪切作用下搅拌5-10 h,即得环氧沥青B组分。
(4)将环氧沥青A组分和环氧沥青B组分在150~180℃下混合均匀,即得到用于钢桥铺装的环氧沥青材料。其中环氧沥青A组分与环氧沥青B组分的配比为1:10~40。
本发明的有益效果:
(1)用2种或2种以上具有不同环氧活性基团的物质进行复配得到环氧树脂A组分,既降低了环氧体系的粘度,又能够控制环氧树脂与固化剂反应的速度,实现固化物交联密度的有效调控,以期获得低温韧性的技术效果。
(2)通过选择高温胺类固化剂,并采用复配调控固化反应活性,确保环氧沥青材料具有较长的施工可操作时间,解决了目前普通环氧沥青混合料在高温下施工可操作期短,难以控制的问题。
(3)选用国产聚合物增韧剂对环氧树脂进行增韧改性,所得产品与同类进口产品相比,低温性能优异,而生产成本却远低于进口产品。
具体实施方式
为使本发明的目的、技术方案及效果更加清楚,明确,以下列举实例对本发明进一步详细说明。应当指出此处所描述的具体实施仅用以解释本发明,并不用于限定本发明。
实施例1
一种用于钢桥铺装的环氧沥青材料及其制备方法,其特征在于:
(1)将环氧树脂E-51、脂环族环氧树脂、丁基缩水甘油醚三种物质以质量份数为60、10、30在30-50℃下进行搅拌充分混合,得到环氧树脂A组分。
(2)将间苯二胺、二氨基二苯砜进行混合,其混合质量比为10:1。再取其混合物70份与液态聚硫橡胶10份、聚异丁烯丁二酰胺5份在30-50℃下进行混合得到中间产物。
(3)将100份基质沥青和20份步骤(2)制得的中间产物加热到140℃,在剪切作用下搅拌5 h,即得环氧沥青B组分。
(4)将环氧沥青A组分和环氧沥青B组分在160℃下充分混合,即得到用于钢桥铺装的环氧沥青材料。其中环氧沥青A组分与环氧沥青B组分的配比为1:15。
实施例2
一种用于钢桥铺装的环氧沥青材料及其制备方法,其特征在于:
(1)将环氧树脂E-51、脂环族环氧树脂、丁基缩水甘油醚三种物质以质量份数为70、10、20在30-50℃下进行搅拌充分混合,得到环氧沥青A组分。
(2)将间苯二胺、二氨基二苯砜进行混合,其混合质量比为5:3。再取其混合物80份与液态聚硫橡胶15份、聚异丁烯丁二酰胺5份在30-50℃下进行混合得到中间产物。
(3)将100份基质沥青和20份步骤(2)制得的中间产物加热到140℃,在剪切作用下搅拌10 h,即得环氧沥青B组分。
(4)将环氧沥青A组分和环氧沥青B组分在160℃下充分混合,即得到用于钢桥铺装的环氧沥青材料。其中环氧沥青A组分与环氧沥青B组分的配比为1:25。
实施例3
一种用于钢桥铺装的环氧沥青材料及其制备方法,其特征在于:
将双酚A型环氧树脂、甘油环氧树脂两种物质以质量份数为60、20在30-50℃下进行搅拌充分混合,得到环氧树脂A组分。
将间苯二胺、二氨基二苯砜进行混合,其混合质量比为5:2。再取其混合物35份与液态聚硫橡胶10份、聚异丁烯丁二酰胺10份在30-50℃下进行混合得到中间产物。
将60份基质沥青和20份上述步骤制得的中间产物加热到140℃,在剪切作用下搅拌5 h,即得环氧沥青B组分。
将环氧沥青A组分和环氧沥青B组分在160℃下充分混合,即得到用于钢桥铺装的环氧沥青材料。其中环氧沥青A组分与环氧沥青B组分的配比为1:15。
实施例4
一种用于钢桥铺装的环氧沥青材料及其制备方法,其特征在于:
(1)将环氧树脂E-51、脂环族环氧树脂、丁基缩水甘油醚三种物质以质量份数为70、10、40在30-50℃下进行搅拌充分混合,得到环氧沥青A组分。
(2)将间苯二胺、二氨基二苯砜进行混合,其混合质量比为5:3。再取其混合物8份与液态聚硫橡胶30份、聚异丁烯丁二酰胺5份在30-50℃下进行混合得到中间产物。
(3)将60份基质沥青和20份步骤(2)制得的中间产物加热到140℃,在剪切作用下搅拌10 h,即得环氧沥青B组分。
(4)将环氧沥青A组分和环氧沥青B组分在160℃下充分混合,即得到用于钢桥铺装的环氧沥青材料。其中环氧沥青A组分与环氧沥青B组分的配比为1:25。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进,这些改进也应视为本发明的保护范围。
Claims (6)
1.一种用于钢桥铺装的环氧沥青材料,其特征在于:该环氧沥青材料包括环氧沥青A组分和环氧沥青B组分,A组分与B组分的重量比为1:10~40;所述环氧沥青A组分重量份数如下:环氧树脂60~80份;活性稀释剂20~40份;所述环氧沥青B组分重量份数如下:基质沥青60~100份;聚合物分散剂5~10份;固化剂8~35份;增韧剂10-30份。
2.根据权利要求1所述的一种用于钢桥铺装的环氧沥青材料,其特征在于:所述环氧树脂为双酚A型环氧树脂、脂环族环氧树脂中的一种或它们的混合物;所述活性稀释剂为丁基缩水甘油醚、甘油环氧树脂中的一种或它们的混合物。
3.根据权利要求1所述的一种用于钢桥铺装的环氧沥青材料,其特征在于:所述固化剂为芳胺、间苯二胺、双氰胺、三乙醇胺、二氨基二苯砜、酚醛树脂中的一种或它们中的两种混合物,两种混合时的质量比为10:1~10。
4.根据权利要求1所述的一种用于钢桥铺装的环氧沥青材料,其特征在于:所述增韧剂为液态聚硫橡胶、双酚A聚砜、聚醚酮、聚酯纤维中的一种或两种混合物。
5.根据权利要求1所述的一种用于钢桥铺装的环氧沥青材料,其特征在于:聚合物分散剂为聚异丁烯丁二酰胺。
6.根据权利要求1所述的一种用于钢桥铺装的环氧沥青材料的制备方法,其特征在于该方法包括以下步骤:
(1)将环氧树脂E-51、脂环族环氧树脂、丁基缩水甘油醚三种物质在30-50℃下进行搅拌充分混合得到环氧树脂A组分;
(2)将聚合物分散剂、增韧剂、固化剂在30-50℃下进行混合得到中间产物;
(3)将基质沥青和步骤(2)制得的中间产物加热到120-140℃,在剪切作用下搅拌5-10h,即得环氧沥青B组分;
(4)将环氧沥青A组分和环氧沥青B组分在150~180℃下混合均匀,即得到用于钢桥铺装的环氧沥青材料;其中环氧沥青A组分与环氧沥青B组分的配比为1:10~40。
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