CN107739208A - 一种高速机车受电弓碳滑板材料制备的方法 - Google Patents

一种高速机车受电弓碳滑板材料制备的方法 Download PDF

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CN107739208A
CN107739208A CN201711098409.1A CN201711098409A CN107739208A CN 107739208 A CN107739208 A CN 107739208A CN 201711098409 A CN201711098409 A CN 201711098409A CN 107739208 A CN107739208 A CN 107739208A
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窦文鑫
臧文平
赵夕
吕海龙
殷正娥
韩雪
李琳慈
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Anhui brocade Carbon Technology Development Co., Ltd.
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Abstract

本发明设计的领域属于电力机车领域,具体讲,涉及一种高速机车受电弓碳滑板材料制备的方法,所述材料的制备方法包括石墨粉镀铜、混捏、成型、焙烧、浸渍、二次焙烧,混捏中骨料的粒度为65‑71μm的石墨粉30%‑50%,粒径为40‑50μm的炭黑3%‑5%,粘接剂为树脂粘接剂15%‑20%,浸渍剂为浸渍沥青,镀铜石墨粉含量为20%‑30%。本发明由于采用石墨镀铜稳定的工艺,石墨具有良好的导电性、耐电弧性、耐摩擦性能和耐腐蚀性,有较长的使用寿命,对导线的摩擦力小,能较好地保护导线,完全能替代传统的碳滑板使用。

Description

一种高速机车受电弓碳滑板材料制备的方法
技术领域
本发明属于电力机车领域,尤其是涉及一种高速机车受电弓碳滑板材料制备的方法。
背景技术
随着我们经济的快速发展,我国轨道交通的建设有了很大的发展,并朝着高速度方向发展,目前我国铁路的提速是通过修改建电气化铁路和对既有的线路进行升级改造从而实现的。自从1961我国年第一条电气化铁路开通后,经过40多年的发展,有了巨大的进步,受电弓滑板是电力机车供电系统中的重要集电元件,一般安装在机车受电弓的最上部,直接与接触网导线接触,在静止或滑动状态下将输电网上的电流引导下来,传输给机车供电系统,来维持电力机车正常运行。高速运行的电力机车上的滑板一旦失效,将严重危及行车安全,因此滑板质量的优劣对机车有非常重要的影响。目前国产的受电弓滑板一般采用金属滑板、纯碳滑板、浸金属滑板,纯碳滑板由于力学性能较差,往往不能应用在高速列车上,金属滑板虽然具有良好的耐磨性,但是对导线损伤较大,浸金属滑板对生产工艺和基材的性能要求严格,铜金属与碳材是具有不润湿的特性,所以国内生产的浸金属碳滑板受配方和工艺的限制,一般表现为寿命较短。
发明内容
本发明制备方法包括石墨粉镀铜、混捏、成型、焙烧、浸渍、二次焙烧,混捏中骨料的粒度为65-71μm的石墨粉30%-50%,粒径为40-50μm的炭黑3%-5%,粘接剂为树脂粘接剂15%-20%,浸渍剂为浸渍沥青,镀铜石墨粉含量为20%-30%。本发明在改进现有技术不足提供一种新型碳滑板,可做到整体强度高、润滑性好,具有高的耐电弧性能和腐蚀性能,具有较好导电性能。
本发明采取的技术方案是:一种高速机车受电弓碳滑板材料的制备方法,其特点是,包含以下几个步骤:
(1)准备原材料,原材料按照重量百分比,由石墨粒度为65-71μm的粉末30%-50%,65-71μm的镀铜石墨粉20%-30%,粒径为40-50μm的炭黑3%-5%,树脂粘结剂含量为15-20%,浸渍剂为浸渍沥青;
(2)混捏: 所述混捏,混捏分为干混和湿混,是将配好的料放入混捏机中,以60转/分钟的速度进行搅拌50-60分钟,干混的温度为145-150℃,所述湿混是将树脂粘结剂加入到混捏锅中,混捏时间为30-40分钟;
(3)成型:现将混捏好的料倒入成型容器中,通过压力机将料从成型模具的嘴子挤出,预压压力为15-25Mpa,挤压压力为10-15Mpa,温度为200℃;
(4)一次焙烧:将压制好的生坯放入坩埚内.再把坩埚放入焙烧炉中进行焙烧,焙烧是在真空设备里进行的,在升温区间100-350℃时,每小时升温1-1.5℃,在350-600℃是每小时升温0.5-0.9℃,在600-900℃,每小时升温1-1.5℃,在900-1300℃是,每小时升温2-3℃,焙烧时间为240-300小时;
(5)浸渍:将一次焙烧品放入浸渍炉中进行浸渍,浸渍是现将浸渍沥青加热到220-280℃,时间为2小时,进行真空压力浸渍,压力为1-3Mpa左右,增重率在10%-15%;
(6)二次焙烧:将浸渍好的产品进行二次焙烧,二次焙烧的时间为300-400小时焙烧温度为700-800℃;
(7)检验:根据碳滑板国家的标准,在试验机上进行力学测试和导电率的测试实验;
本发明制备的碳滑板的理化指标参数是:
本发明的优点是,由于镀铜工艺的稳定性,能大大提高了导电性,加入的树脂粘接剂和炭黑能提高力学性能,最终导致了碳滑板具有较好的力学性能和较高的导电性能,能应用的机车领域广泛,不仅能应用在普通机车上,也能应用在高速机车上,可实用强。然而传统纯碳滑板由于力学性能较差,往往不能应用在高速列车上,金属滑板虽然具有良好的耐磨性,但是对导线损伤较大,浸金属滑板对生产工艺和基材的性能要求严格,铜金属与碳材是具有不润湿的特性,所以国内生产的浸金属碳滑板受配方和工艺的限制
具体实施方式
实施例1
产品配置方法
原材料配比:
准备原材料,原材料按照重量百分比,由石墨粉末45%,镀铜石墨粉20%,炭黑3%,树脂粘结剂含量为15%,浸渍剂为浸渍沥青17%进行混合,之后在压力为10Mpa压力下挤成长条,在按照一焙的升温曲线进行焙烧,焙烧260小时,焙烧之后在压力为1Mpa,温度为230℃下进行沥青浸渍时间为2小时,最后进行二次焙烧,焙烧温度为800℃,时间为300小时,产品理化指标为:
实施例2
产品配置方法
原材料配比:
准备原材料,原材料按照重量百分比,由石墨粉末35%,镀铜石墨粉30%,炭黑3%,树脂粘结剂含量为15%,浸渍剂为浸渍沥青17%进行混合,之后在压力为12Mpa压力下挤成长条,在按照一焙的升温曲线进行焙烧,焙烧260小时,焙烧之后在压力为1.5Mpa,温度为250℃下进行沥青浸渍时间为2小时,最后进行二次焙烧,焙烧温度为800℃,时间为350小时,产品理化指标为:
实施例3
产品配置方法
原材料配比:
准备原材料,原材料按照重量百分比,由石墨粉末30%,镀铜石墨粉35%,炭黑3%,树脂粘结剂含量为15%,浸渍剂为浸渍沥青17%进行混合,之后在压力为15Mpa压力下挤成长条,在按照一焙的升温曲线进行焙烧,焙烧260小时,焙烧之后在压力为1.5Mpa,温度为280℃下进行沥青浸渍时间为2小时,最后进行二次焙烧,焙烧温度为800℃,时间为400小时,产品理化指标为:
检测项目 单位 参数指标
体积密度 g/cm3 2.61
抗折强度 Mpa 72
抗压强度 Mpa 118
冲击韧性 J/cm3 0.28
20℃电阻率 μΩ.m 4.93
洛氏硬度 HRC 64
肖氏硬度 HS 90
最后说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的宗旨和范围,其均应涵盖在本发明的权利要求范围当中。

Claims (10)

1.一种高速机车受电弓碳滑板材料制备的方法,其特征是包括石墨粉镀铜、混捏、成型、焙烧、浸渍、二次焙烧,混捏石墨粒度为65-71μm的粉末和68-78μm的镀铜石墨粉,炭黑粒径为40-50μm,粘接剂为树脂粘接剂,浸渍剂为浸渍沥青。
2.根据权利1所述的一种高速机车受电弓碳滑板,其特征是树脂粘结剂为环氧树脂。
3.根据权利1所述的一种高速机车受电弓碳滑板,所述骨料中石墨的重量比为30%-50%,炭黑重量比为3%-5%;树脂粘结剂重量比为15%-20%,镀铜石墨粉的重量比为20%-30%。
4.根据权利1所述的一种高速机车受电弓碳滑板,所述镀铜石墨粉,是用65-71μm的粉末,在硫酸铜浓度为60-70g/L,锌粉加入量为10-15g/L,冰乙酸加入量为12-18 g/L,镀膜时间为35-55分钟,镀膜温度在30-35℃环境下进行的。
5.根据权利1所述的一种高速机车受电弓碳滑板的生产方法,其特征包括以下步骤进行:
a. 按照配方选取材料;
b. 原材料混捏,将配好的原材料放入混捏锅中进行混合1-2个小时;
c. 成型,将混合后的原料放入挤压机中,压力10-15Mpa;
d. 焙烧,将挤压成型的碳滑板装入烧结炉,进行烧结;
e. 浸渍,将烧结好的碳滑板装入浸渍炉进行浸渍;
f. 二次焙烧,将浸渍好的碳滑板放入烧结炉再次进行烧结;
g. 检验,将烧结好的碳滑板进行力学性能和导电性能的检测。
6.根据权利5所述的一种高速机车受电弓滑板的生产方法,其特征在于,所述混捏,混捏分为干混和湿混,是将配好的料放入混捏机中,以60转/分钟的速度进行搅拌50-60分钟,干混的温度为145-150℃,所述湿混是将树脂粘结剂加入到混捏锅中,混捏时间为30-40分钟。
7.根据权利5所述的一种高速机车受电弓碳滑板的生产方法,其特征在于,所述成型的方式为挤压成型,通过压力机将料从成型模具的嘴子挤出,预压压力为15-25Mpa,挤压压力为10-15Mpa,温度为200℃。
8.根据权利5所述的一种高速机车受电弓滑板的生产方法,其特征在于,所属一次焙烧.在升温区间100-350℃时,每小时升温1-1.5℃,在350-600℃是每小时升温0.5-0.9℃,在600-900℃,每小时升温1-1.5℃,在900-1300℃是,每小时升温2-3℃,焙烧时间为240-300小时。
9.根据权利5所述的一种高速机车受电弓滑板的生产方法,其特征在于,所述浸渍是现将浸渍沥青加热到220-280℃,,进行真空压力浸渍,压力为1-3Mpa左右,增重率在10%-15%。
10.根据权利5所述的一种高速机车受电弓滑板的生产方法,其特征在于,所述二次焙烧的时间为300-400小时,焙烧温度为700-800℃。
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CN109338145A (zh) * 2018-11-30 2019-02-15 大同新成新材料股份有限公司 一种受电弓碳滑板复合材料的制备方法
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CN108530076A (zh) * 2018-04-02 2018-09-14 大同新成新材料股份有限公司 一种铝基碳滑板制备工艺
CN108530076B (zh) * 2018-04-02 2020-02-28 大同新成新材料股份有限公司 一种铝基碳滑板制备工艺
CN109678508A (zh) * 2018-06-13 2019-04-26 安徽锦美碳材科技发展有限公司 一种新型电饭锅内胆的制备方法
CN109136622A (zh) * 2018-08-23 2019-01-04 大同新成新材料股份有限公司 一种受电弓滑板材料的制备方法
CN109136793A (zh) * 2018-08-28 2019-01-04 大同新成新材料股份有限公司 一种钛石墨烯增强铜基碳滑板复合材料的制备方法
CN109338145A (zh) * 2018-11-30 2019-02-15 大同新成新材料股份有限公司 一种受电弓碳滑板复合材料的制备方法
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CN109970448A (zh) * 2018-12-22 2019-07-05 中国平煤神马集团开封炭素有限公司 一种受电弓碳滑板成型工艺
CN112643032A (zh) * 2020-12-23 2021-04-13 扬州应韵碳科技有限公司 一种电力机车受电弓用碳/铜复合滑板生产方法
CN116535227A (zh) * 2023-07-05 2023-08-04 西南交通大学 一种碳纤维原位生成纳米银增强受电弓碳滑板的制备方法
CN116535227B (zh) * 2023-07-05 2023-10-10 西南交通大学 一种碳纤维原位生成纳米银增强受电弓碳滑板的制备方法

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