CN101205389B - 低粘度复合橡胶沥青 - Google Patents

低粘度复合橡胶沥青 Download PDF

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CN101205389B
CN101205389B CN2006101476824A CN200610147682A CN101205389B CN 101205389 B CN101205389 B CN 101205389B CN 2006101476824 A CN2006101476824 A CN 2006101476824A CN 200610147682 A CN200610147682 A CN 200610147682A CN 101205389 B CN101205389 B CN 101205389B
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CN101205389A (zh
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黄子章
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BENGBU SIFANG ASPHALT Co.,Ltd.
SHANGHAI ROADPHALT ASPHALT TECHNOLOGY Co.,Ltd.
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SHANGHAI QUNKANG ASPHALTUM TECHNOLOGY Co Ltd
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Abstract

本发明属于一种复合橡胶沥青技术领域。本发明所述的复合橡胶沥青,其组分含有:沥青100份、10-60目轮胎橡胶粉20-40份、石油树脂5-40份。本发明的复合橡胶沥青软化点较普通橡胶沥青软化点高,表明有更好的高温性能;177℃粘度较普通橡胶沥青低,表明有较好的施工性能。

Description

低粘度复合橡胶沥青
技术领域
本发明属于一种复合橡胶沥青技术领域。
背景技术
按照美国材料与测试协会标准(ASTMD 6114-97)的定义,橡胶沥青是指含量15%以上的轮胎橡胶粉在高温和充分拌和的条件下(180℃以上)与沥青溶胀反应得到的改性沥青胶结料,由于溶胀后橡胶颗粒体积比例可以达到40%,橡胶沥青及其混合料都能够显现硫化橡胶的特性,低温变形能力、路面在常温以下温度的柔韧性得到提高,加上轮胎抗老化能力的传递,是非常理想的长寿命、抗裂沥青材料。而且由于采用回收轮胎作为改性材料,相比SBS改性沥青具有成本优势。但是,废轮胎橡胶配方的橡胶沥青,在高温稳定性上还存在不足,在道路交通超载超限还难以避免的情况下,会影响橡胶沥青在重载、交通主干线及高温地区的应用。此外,由于加入的橡胶沥青掺量较高,橡胶沥青在177℃下粘度过大,施工性能不好。
发明内容
本发明的目的就是提供一种低粘度的复合橡胶沥青,该种橡胶沥青的粘度显著降低,改善了现有橡胶沥青的施工性能等。
本发明的发明人发现,通过加入石油树脂,可以提高橡胶沥青的高温稳定性,同时还可以显著降低橡胶沥青的粘度,恰好弥补了橡胶沥青最重要的两方面缺点。
因此,本发明所采取的具体技术方案是:
一种低粘度复合橡胶沥青,其组分含有:沥青100份、10-60目轮胎橡胶粉20-40份、石油树脂5-40份。
上述的轮胎橡胶粉优选20-40目的轮胎橡胶粉,其含量优选为30~40份。石油树脂软化点在70-150℃,优选90-115℃,其含量优选5-30,更为优选的是10~20份。
本发明的有益效果:本发明的低粘度复合橡胶沥青软化点较普通橡胶沥青软化点高,表明有更好的高温性能;177℃粘度较普通橡胶沥青低,表明有较好的施工性能。
具体实施方式
以沥青质量为百分比计,将20-30%的轮胎橡胶粉加入到沥青中,在180℃温度下搅拌并反应45分钟,橡胶为回收货车轮胎破碎并去除钢丝和纤维后的粉未,粉未粒度为20-40目,平均为粒径为20目,橡胶烃含量为60%,丙酮抽提物为7%,灰分含量为8%;沥青为东海70号道路石油沥青。然后加入沥青重量3-10%的石油树脂,继续搅拌30分钟,配制出复合橡胶沥青。各实施例的原料和配比见表一。
                    表一
  组份  实施例1  实施例2  实施例3  实施例4
  沥青  100  100  100  100
  石油树脂  2  5  10  20
  轮胎橡胶粉  20  23  26  4
对各实施例所制得的橡胶沥青进行性能测试。针入度、软化点分别按GB/T 4509和GB/T4507规定的方法测试,177℃粘度试验按交通部行业标准JTJ 052“公路工程沥青及沥青混合料试验规程”中规定的方法T 0620进行。结果见表二。
                       表二
  项目   实施例1   实施例2   实施例3   实施例4
  针入度(25℃),1/10mm   45   40   35   30
  软化点,℃   54   69   74   85
  粘度(177℃),Pa.S   1.7   2.0   2.2   2.9
由以上检测结果可见,本发明所述的复合橡胶沥青软化点较普通橡胶沥青软化点高,表明有更好的高温性能;177℃粘度较普通橡胶沥青低,表明有较好的施工性能。
通过试验测试,发现加入石油树脂的橡胶沥青胶结料在相同条件下成型的混合料空隙率降低,表明其施工性能得到改善,同时橡胶沥青混合料车辙试验动稳定度也随石油树脂的增加逐渐增大,表明其高温稳定性获得提高。

Claims (3)

1.一种低粘度复合橡胶沥青,由以下重量份的组分组成:沥青100重量份、10-60目轮胎橡胶粉20-30重量份、石油树脂5-10重量份。
2.如权利要求1所说的低粘度复合橡胶沥青,其特征在于:所说的轮胎橡胶粉为20-40目。
3.如权利要求2所说的低粘度复合橡胶沥青,其特征在于:所说的石油树脂软化点为90-115℃。
CN2006101476824A 2006-12-21 2006-12-21 低粘度复合橡胶沥青 Active CN101205389B (zh)

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CN105504839A (zh) * 2015-12-30 2016-04-20 上海浦东路桥沥青材料有限公司 低粘度橡胶粉沥青

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0726295A1 (en) * 1995-02-08 1996-08-14 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Heat bonded type vibration-damping resin for structural member, vibration-damping structure and manufacturing method thereof
CN1400245A (zh) * 2001-07-26 2003-03-05 金贤俊 一种沥青添加剂、含有该添加剂的混合物及该混合物的制造方法和应用
KR20050050783A (ko) * 2003-11-26 2005-06-01 한본인더스트리 주식회사 방수용 아스팔트 접착제 조성물과, 그를 이용한 아스팔트시트방수시공방법

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0726295A1 (en) * 1995-02-08 1996-08-14 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Heat bonded type vibration-damping resin for structural member, vibration-damping structure and manufacturing method thereof
CN1400245A (zh) * 2001-07-26 2003-03-05 金贤俊 一种沥青添加剂、含有该添加剂的混合物及该混合物的制造方法和应用
KR20050050783A (ko) * 2003-11-26 2005-06-01 한본인더스트리 주식회사 방수용 아스팔트 접착제 조성물과, 그를 이용한 아스팔트시트방수시공방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP昭57-44661A 1982.03.13

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