CN106523514A - 耐高温高分子自润滑轴承及其制备方法 - Google Patents

耐高温高分子自润滑轴承及其制备方法 Download PDF

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CN106523514A
CN106523514A CN201610989661.0A CN201610989661A CN106523514A CN 106523514 A CN106523514 A CN 106523514A CN 201610989661 A CN201610989661 A CN 201610989661A CN 106523514 A CN106523514 A CN 106523514A
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王天昶
王辉
郇彦
贾远华
王杰
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Changchun A&z Science Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
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    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
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Abstract

本发明涉及一种耐高温高分子自润滑轴承及其制备方法,属于滑动轴承技术领域。解决了如何提供一种耐高温高分子自润滑轴承及其制备方法的技术问题。本发明的耐高温自润滑高分子轴承,由多层纤维预浸布热压固化而成;每层纤维预浸布的纤维布为44~54重量份,每层纤维预浸布的预浸料由40~50的重量份酚醛树脂、2~10重量份的润滑剂和0.5~5重量份的硅烷偶联剂组成;其中,酚醛树脂为硼酚醛树脂或钼酚醛树脂的一种或两种按任意比例的混合。本发明耐高温自润滑高分子轴承具有耐磨性能好、摩擦系数小、高温下摩擦不熔融等性能优势,尤其是250℃条件下并未发现熔融。

Description

耐高温高分子自润滑轴承及其制备方法
技术领域
本发明属于滑动轴承领域,具体涉及一种耐高温高分子自润滑轴承及其制备方法。
背景技术
滑动轴承(slidingbearing),是指在滑动摩擦下工作的轴承。常用的滑动轴承材料有轴承合金(又叫巴氏合金或白合金)、耐磨铸铁、铜基和铝基合金、粉末冶金材料、塑料、橡胶、硬木、碳石墨、聚四氟乙烯(特氟龙、PTFE)、改性聚甲醛(POM)等。其中,高分子材料制备的滑动轴承可以自润滑,在不使用润滑剂的情况下,可以靠本体材料润滑,或采用水作润滑剂,相比于金属类滑动轴承,具有无污染、绿色环保、耗能小、摩擦系数低、安全性能高等优势,因此在舰船上得到了广泛地应用。但高分子材料在高温下性能衰减较快,因此很难应用于高温场合。为解决这一问题,中国专利公开了一种耐高温树脂与无机粒子的复合方案(公开号141406A),能够将轴承的使用温度提高到200℃,但该方案采用的基体树脂为热塑性材料,在使用过程中如摩擦过热将会产生塑性变形,在使用时存在一定的安全风险。
发明内容
本发明的目的是如何提供一种耐高温高分子自润滑轴承及其制备方法。
耐高温自润滑高分子轴承,所述复合材料由多层纤维预浸布热压固化而成;
每层纤维预浸布的纤维布为44~54重量份,每层纤维预浸布的预浸料由40~50的重量份酚醛树脂、5~10重量份的润滑剂和0.5~5重量份的硅烷偶联剂组成;
所述酚醛树脂为硼酚醛树脂或钼酚醛树脂的一种或两种按任意比例的混合。
优选的是,所述纤维布为碳纤维布或玄武岩纤维布。
优选的是,所述润滑剂为石墨、二硫化钼、聚四氟乙烯中的一种或两种按任意比例的混合。
上述耐高温自润滑高分子轴承的制备方法,步骤如下:
步骤一、将酚醛树脂溶解在溶剂中,得到固含量为40%~60%的酚醛树脂溶液;
步骤二、将润滑剂与硅烷偶联剂分散到步骤一得到的酚醛树脂溶液中,得到胶液;
步骤三、将步骤二得到的胶液均匀涂布到纤维布上,然后于50~80℃的烘箱,烘干3~10min,得到坯布;
步骤四、将坯布层层叠加铺设至轴承所需厚度,裁剪,置于模具中,然后于160~200℃,10~30MPa下,热压5~400min,冷却到室温,得到耐高温高分子自润滑轴承。
优选的是,步骤一中,所述溶剂为乙醇或甲醇。
优选的是,步骤二中分散采用的设备是搅拌机。
优选的是,步骤三采用涂胶机将胶液均匀涂布到纤维布上。
与现有技术相比,本发明的有益效果为:
本发明耐高温自润滑高分子轴承通过采用钼酚醛树脂和硼酚醛树脂,提高了材料的耐高温性能和耐磨性,采用碳纤维布或玄武岩纤维布替代传统的棉布,进一步提高材料的强度和耐高温性,通过钼酚醛塑酯或硼酚醛树脂与纤维布的复合,将两者优势进行结合;进而综合使材料具有耐磨性能好、摩擦系数小、高温下摩擦不熔融等性能优势,经实验检测,在测试条件为:比压0.8MPa,转速200RPM,时间60min,测试温度:250℃下,复合材料磨耗量为0.021~0.037,摩擦系数为0.018~0.021;在比压1MPa,转速2000RPM下,极限破坏时间为18~30mn;250℃条件下并未发现熔融,可以长期使用;
本发明的耐高温自润滑高分子轴承的制备方法,简单易操作,通过层压方式即可获得。
具体实施方式
为了进一步了解本发明,下面结合具体实施方式对本发明的优选实施方案进行描述,但是应当理解,这些描述只是为进一步说明本发明的特征和优点,而不是对本发明专利要求的限制。
本发明的耐高温自润滑高分子轴承,由多层纤维预浸布热压固化而成,其中,层数没有特殊限制,以实际要制作的轴承的厚度决定,通常为30层以上;每层纤维预浸布的纤维布为44~54重量份,纤维布为碳纤维布或玄武岩纤维布;每层纤维预浸布的预浸料由40~50的重量份酚醛树脂、5~10重量份的润滑剂和0.5~5重量份的硅烷偶联剂组成,酚醛树脂为硼酚醛树脂或钼酚醛树脂的一种或两种按任意比例的混合,润滑剂为石墨、二硫化钼、聚四氟乙烯中的一种或两种按任意比例的混合。
上述耐高温自润滑高分子轴承的制备方法,步骤如下:
步骤一、将酚醛树脂溶解在溶剂中,通常为乙醇或甲醇,得到固含量为40%~60%的酚醛树脂溶液;
步骤二、采用搅拌机将润滑剂与硅烷偶联剂分散到步骤一得到的酚醛树脂溶液中,得到胶液;
步骤三、采用涂胶机将步骤二得到的胶液均匀涂布到纤维布上,然后于50~80℃的烘箱,烘干3~10min,得到坯布;
步骤四、将坯布层层叠加铺设至轴承所需厚度,裁剪,置于模具中,然后于160~200℃,10~30MPa下,热压5~400min,冷却到室温,得到耐高温高分子自润滑轴承。
以下结合实施例进一步说明本发明。
实施例1
耐高温自润滑高分子轴承,由50层纤维预浸布热压固化而成,每层纤维预浸布的玄武岩纤维布为54重量份,每层纤维预浸布的预浸料由40的重量份钼酚醛树脂、5.5重量份的石墨和0.5重量份的硅烷偶联剂组成。
上述耐高温自润滑高分子轴承的制备:用溶剂乙醇将钼酚醛树脂溶解,配成固含量为40%的酚醛树脂溶液,然后将石墨与硅烷偶联剂加入到酚醛树脂溶液中,搅拌均匀,得到胶液,采用涂胶机将胶液均匀涂布到玄武岩纤维布上,然后在50℃烘箱红烘烤10min,将溶液挥发干净,得到坯布;将坯布层层叠加铺设至轴承所需厚度,裁剪,放入模具中,于160℃,30MPa条件下,热压400min后,将模具冷却到室温,即得到耐高温自润滑轴承材料。
实施例2
耐高温自润滑高分子轴承,由50层纤维预浸布热压固化而成,每层纤维预浸布的碳纤维布为44重量份,每层纤维预浸布的预浸料由45的重量份钼酚醛树脂、10重量份的二硫化钼和0.5重量份的硅烷偶联剂组成。
上述耐高温自润滑高分子轴承的制备:用溶剂乙醇将钼酚醛树脂溶解,配成固含量为50%的酚醛树脂溶液,然后将二硫化钼与硅烷偶联剂加入到酚醛树脂溶液中,搅拌均匀,得到胶液,采用涂胶机将胶液均匀涂布到碳纤维布上,然后在80℃烘箱红烘烤3min,将溶液挥发干净,得到坯布;将坯布层层叠加铺设至轴承所需厚度,裁剪,放入模具中,于200℃,10MPa条件下,热压5min后,将模具冷却到室温,即得到耐高温自润滑轴承。
实施例3
耐高温自润滑高分子轴承,由50层纤维预浸布热压固化而成,每层纤维预浸布的玄武岩纤维布为44重量份,每层纤维预浸布的预浸料由50的重量份钼酚醛树脂、5.5重量份的聚四氟乙烯和0.5重量份的硅烷偶联剂组成。
上述耐高温自润滑高分子轴承的制备:用溶剂乙醇将钼酚醛树脂溶解,配成固含量为60%的酚醛树脂溶液,然后将聚四氟乙烯与硅烷偶联剂加入到酚醛树脂溶液中,搅拌均匀,得到胶液,采用涂胶机将胶液均匀涂布到玄武岩纤维布上,然后在60℃烘箱红烘烤5min,将溶液挥发干净,得到坯布,将坯布层层叠加铺设至轴承所需厚度,裁剪,放入模具中,于180℃,30MPa条件下,热压100min后,将模具冷却到室温,即得到耐高温自润滑轴承。
实施例4
耐高温自润滑高分子轴承,由50层纤维预浸布热压固化而成,每层纤维预浸布的碳纤维布为44重量份,每层纤维预浸布的预浸料由41的重量份硼酚醛树脂、2重量份的二硫化钼和5重量份的硅烷偶联剂组成。
上述耐高温自润滑高分子轴承的制备:用溶剂甲醇将硼酚醛树脂溶解,配成固含量为45%的酚醛树脂溶液,然后将二硫化钼与硅烷偶联剂加入到酚醛树脂溶液中,搅拌均匀,得到胶液,采用涂胶机将胶液均匀涂布到碳纤维布上,然后在60℃烘箱红烘烤5min,将溶液挥发干净,得到坯布;将坯布层层叠加铺设至轴承所需厚度,裁剪,放入模具中,于190℃,20MPa条件下,热压150min后,将模具冷却到室温,即得到耐高温自润滑轴承。
对实施例1~4的轴承进行性能检测。测试结果如表1所示。
在轴承试验台架上上对本发明材料进行磨损测试。测试条件为:比压0.8MPa,转速200RPM,时间60min,测试温度:250℃,以摩擦前后试样的重量损失作为磨耗量。
摩擦极限破坏测试条件为比压1MPa,转速2000RPM,记录试样破坏时间和方式。
将试样在常温和250℃条件下进行压缩强度测试评判材料的耐高温性能。
表1实施例1-4的轴承的性能检测结果
从表1可以看出,本发明的轴承耐磨性能好、摩擦系数小、高温下摩擦不熔融等性能优势,在250℃以下环境可以长期使用。

Claims (7)

1.耐高温自润滑高分子轴承,其特征在于,所述复合材料由多层纤维预浸布热压固化而成;
每层纤维预浸布的纤维布为44~54重量份,每层纤维预浸布的预浸料由40~50的重量份酚醛树脂、2~10重量份的润滑剂和0.5~5重量份的硅烷偶联剂组成;
所述酚醛树脂为硼酚醛树脂或钼酚醛树脂的一种或两种按任意比例的混合。
2.根据权利要求书1所述的耐高温自润滑高分子轴承,其特征在于,所述纤维布为碳纤维布或玄武岩纤维布。
3.根据权利要求书1所述的耐高温自润滑高分子轴承,其特征在于,所述润滑剂为石墨、二硫化钼、聚四氟乙烯中的一种或两种按任意比例的混合。
4.权利要求书1~3任何一项所述的耐高温自润滑高分子轴承的制备方法,其特征在于,步骤如下:
步骤一、将酚醛树脂溶解在溶剂中,得到固含量为40%~60%的酚醛树脂溶液;
步骤二、将润滑剂与硅烷偶联剂分散到步骤一得到的酚醛树脂溶液中,得到胶液;
步骤三、将步骤二得到的胶液均匀涂布到纤维布上,然后于50~80℃的烘箱,烘干3~10min,得到坯布;
步骤四、将坯布层层叠加铺设至轴承所需厚度,裁剪,置于模具中,然后于160~200℃,10~30MPa下,热压5~400min,冷却到室温,得到耐高温高分子自润滑轴承。
5.根据权利要求书4所述的耐高温自润滑高分子轴承的制备方法,其特征在于,步骤一中,所述溶剂为乙醇或甲醇。
6.根据权利要求书4所述的耐高温自润滑高分子轴承的制备方法,其特征在于,步骤二中分散采用的设备是搅拌机。
7.根据权利要求书4所述的耐高温自润滑高分子轴承的制备方法,其特征在于,步骤三采用涂胶机将胶液均匀涂布到纤维布上。
CN201610989661.0A 2016-11-10 2016-11-10 耐高温高分子自润滑轴承及其制备方法 Pending CN106523514A (zh)

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CN110744886A (zh) * 2019-11-01 2020-02-04 南方科技大学 一种金属保护膜及其制备方法
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