CN110591568A - 一种轴承板材用粘合剂、自润滑轴承板材及其制备方法 - Google Patents
一种轴承板材用粘合剂、自润滑轴承板材及其制备方法 Download PDFInfo
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- CN110591568A CN110591568A CN201910754355.2A CN201910754355A CN110591568A CN 110591568 A CN110591568 A CN 110591568A CN 201910754355 A CN201910754355 A CN 201910754355A CN 110591568 A CN110591568 A CN 110591568A
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- parts
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- soft belt
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Abstract
本发明公开了一种轴承板材用粘合剂,其原料包括A组分、B组分,其中A组分、B组分的重量比为1:0.1‑0.2;A组分的原料按重量份包括:聚氨酯树脂10‑15份,双酚芴环氧树脂10‑30份,丙烯酸树脂30‑50份,稀释剂20‑30份,硅烷偶联剂A 1‑3份,添加剂8‑10份,填料10‑15份;B组分的原料按重量份包括:二乙烯三胺6‑8份,氨乙基哌嗪15‑25份,硅烷偶联剂B 0.5‑1份。本发明还公开了一种自润滑轴承板材。本发明还公开了一种自润滑轴承板材的制备方法。本发明粘合剂具有良好的附着力和承载力;自润滑轴承板材壁薄、耐磨、承载力高;自润滑轴承板材的制备工艺简单、环保。
Description
技术领域
本发明涉及轴承用粘合剂技术领域,尤其涉及一种轴承板材用粘合剂、自润滑轴承板材及其制备方法。
背景技术
自润滑轴承无需油脂润滑、在性能上极大的突破了传统轴承的使用极限,因此对自润滑轴承板材的性能要求也很高。目前常通过改善板材材料和制造工艺来提升自润滑轴承板材的性能。
传统使用的自润滑轴承板材是层叠烧结复合板材,如钢-铜粉复合板材、编制铜网-非金属材料复合板材。这些复合板材的一般制造工艺是:裁剪钢板——钢板表面铺铜粉烧结——校平——表面铺非金属减磨材料烧结——棍扎校平到规定厚度的板材,制成作滑动轴承的胚料,再根据要求成型零件。
由于钢与非金属材料物理性能不一致,如热胀系数不同,在高温下工作,易起皱或材料结合面之间易分离;平板材料在弯曲成型的过程中,由于材料内外层的曲率不同也会引起材料结合面之间的分离。因此,生产过程中一般在钢的材料基表面铺上球形铜粉烧结,以增加钢材料基表面的粗糙度及形成空隙,提高非金属减磨材料与钢基材料表面的附着力,使两者不易分离。
但是,铜粉烧结工艺复杂,质量难以控制,又要消耗大量能源;而且烧结工艺只能选择钢板和铜粉两种金属材料,材料选择范围窄;另外传统制造工艺中,耐磨材料为粉状结构,通过扎制而成,这种工艺致使轴承承载力低,寿命短,使用过程中耐磨材料易脱落分离且对装配环境有较高要求。
而随着工业技术的发展,现在使用的自润滑轴承除了要求精度高,耐磨性能好、壁薄外,还要求在壁薄的同时具有较大的承载力,而这两种性能很难兼具,且还要求轴承板材的制备工艺环保,而目前的制备工艺难以满足此要求。
目前,虽然也有用粘合剂来粘结轴承板材,但是,耐磨材料一般为聚四氟乙烯材料,由于聚四氟乙烯很难与其他材料实现有效粘结,且轴承板材加工过程中的高温高压,会降低粘合剂的粘度,加压弯曲以及轴承使用过程中受到的高压力,容易使得耐磨层与金属基片分离。
发明内容
基于背景技术存在的技术问题,本发明提出了一种轴承板材用粘合剂、自润滑轴承板材及其制备方法,本发明粘合剂具有良好的附着力和承载力,能承受轴承板材加工过程和轴承使用过程中的高压、高温、弯曲条件,使得轴承板材在高温、高压和弯曲加工成轴承以及轴承使用过程中,均不会发生金属支撑片和耐磨软带的分离;自润滑轴承板材壁薄、耐磨、承载力高;自润滑轴承板材的制备工艺简单、消耗低、环保。
本发明提出的一种轴承板材用粘合剂,其原料包括A组分、B组分,其中A组分、B组分的重量比为1:0.1-0.2;
A组分的原料按重量份包括:聚氨酯树脂10-15份,双酚芴环氧树脂10-30份,丙烯酸树脂30-50份,稀释剂20-30份,硅烷偶联剂A 1-3份,添加剂8-10份,填料10-15份;
B组分的原料按重量份包括:二乙烯三胺6-8份,氨乙基哌嗪15-25份,硅烷偶联剂B0.5-1份。
优选地,在丙烯酸树脂的制备过程中,将甲基丙烯酸三氟乙酯、甲基丙烯酸缩水甘油酯、甲基丙烯酸十二氟庚酯、丙烯酸丁酯、十二硫醇、引发剂A混匀,升温至70-80℃,保温搅拌40-60min;降温至50-60℃,加入引发剂B混匀,保温24-36h,升温至110-120℃,保温搅拌30-50min得到丙烯酸树脂。
优选地,在丙烯酸树脂的制备过程中,引发剂A、引发剂B均为过氧化二异丙苯。
优选地,在丙烯酸树脂的制备过程中,甲基丙烯酸三氟乙酯、甲基丙烯酸缩水甘油酯、甲基丙烯酸十二氟庚酯、丙烯酸丁酯、十二硫醇、引发剂A的重量比为10-15:40-45:15-20:35-40:2-3:1-2。
优选地,在丙烯酸树脂的制备过程中,引发剂A、引发剂B的重量比为1:0.005-0.01。
优选地,聚氨酯树脂的NCO含量为14-17wt%。
优选地,添加剂为聚氯乙烯、聚乙烯、聚丙烯、聚苯乙烯中的至少一种。
优选地,填料为钛白粉。
优选地,硅烷偶联剂A为γ-甲基丙烯酰氧基丙基三甲氧基硅烷。
优选地,硅烷偶联剂B为γ-氨丙基三乙氧基硅烷。
优选地,稀释剂为乙酸乙酯、正已烷、乙醇、丙酮中的至少一种。
本发明还提出了一种自润滑轴承板材,所述自润滑轴承板材包括:耐磨软带、金属支撑片;所述金属支撑片一面光滑,另一面粗糙;用粘合剂将耐磨软带和金属支撑片的粗糙面粘结,所述粘合剂为上述轴承板材用粘合剂。
优选地,所述自润滑轴承板材还包括骨架网;所述骨架网在所述金属支撑片的粗糙面和所述耐磨软带的中间;用粘合剂将耐磨软带、骨架网、金属支撑片粘结。
优选地,自润滑轴承板材的厚度为0.5-5.5mm。
优选地,金属支撑片的厚度为0.2-5mm。
优选地,金属支撑片粗糙面的表面均匀分布多个凹陷结构。
优选地,凹陷结构的面积占金属支撑片单面面积的15-50%。
上述凹陷结构的深度可以为0.1-1mm。
上述金属支撑片粗糙面的凹陷结构的形状可以为圆形、菱形、矩形、三角形、不规则形状中的至少一种。
上述金属支撑片可以通过喷砂、压制、刻制、磷化等方法来获得金属支撑片的粗糙面。
优选地,金属支撑片的材料为铁、铜、铝、锡、锌、钛、钪、钒、铬、锰、钴、镍、合金钢、电镀钢。
上述金属支撑片的材料可以为ST12钢板、铝板。
优选地,耐磨软带的厚度为0.1-0.5mm。
优选地,耐磨软带的抗拉强度≥13.2MPa,耐磨软带的断裂伸长率≥150%。
优选地,耐磨软带的原料按重量份包括:聚四氟乙烯80份、石墨8-10份、纤维增强剂10-12份。
优选地,耐磨软带的制备方法为:将耐磨软带原料混匀,压制成坯料,烧结,切削成软带,经钠化处理得到耐磨软带。
优选地,烧结的程序为:以升温至360℃,再降温至120℃为一个周期,连续10-12个周期,总烧结时间为80-96h。
优选地,压制成坯料的压力≥40MPa。
优选地,自然状态下耐磨软带原料的体积与坯料体积的比值为3.8-4:1。
优选地,骨架网的厚度为0.15-0.5mm。
优选地,骨架网的材料为金属。
优选地,骨架网的材料为磷青铜、黄铜、合金钢、电镀钢。
优选地,骨架网的材料为磷青铜。
上述骨架网的网眼形状可以为圆形、菱形、矩形、三角形、梯形等多种形状。
本发明还提出了包括如下步骤:在耐磨软带的一面、金属支撑片的粗糙面均涂覆粘合剂,将金属支撑片的粗糙面和涂有粘合剂的耐磨软带面贴合,然后烘焙,热压,冷压得到自润滑轴承板材。
优选地,当自润滑轴承板材包括骨架网时,在耐磨软带的一面、金属支撑片的粗糙面、骨架网表面均涂覆粘合剂,将骨架网置于金属支撑片的粗糙面和涂有粘合剂的耐磨软带面之间,然后烘焙,热压,冷压得到自润滑轴承板材。
上述骨架网的一面或两面均可涂覆粘合剂。
优选地,烘焙温度为160-180℃,烘焙时间为8-12min。
优选地,热压温度为185-200℃,热压压力为10-12MPa,热压时间为10-20min。
优选地,冷压温度为5-30℃,冷压压力为19-21MPa。
上述冷压时,不规定冷压时间,根据所需板材的厚度、尺寸,冷压至所需厚度和尺寸即可。
优选地,粘合剂经有机溶剂稀释后,再进行涂覆。
上述涂覆方式有多种,如刷涂、喷涂等。
优选地,粘合剂和有机溶剂的体积比为1:1-2。
优选地,有机溶剂为丁酮、丙酮、乙醇中的至少一种。
上述金属支撑片、骨架网和耐磨软带表面均做脱脂处理后,再涂覆粘合剂。
有益效果:
1.本发明具有良好的附着力和承载力,且耐高温;能承受轴承板材加工过程和轴承使用过程中的高压、高温、弯曲条件,将金属支撑片、骨架网和耐磨软带紧密粘结,使得轴承板材在高温、高压和弯曲加工成轴承以及轴承使用过程中,均不会发生金属支撑片和耐磨软带的分离;选用甲基丙烯酸三氟乙酯、甲基丙烯酸缩水甘油酯、甲基丙烯酸十二氟庚酯、丙烯酸丁酯为单体以适宜配比共聚制备丙烯酸树脂,使得丙烯酸树脂具有良好的粘性,并且在丙烯酸树脂的侧链上引入了适量的氟元素,降低丙烯酸树脂的表面张力,使得聚四氟乙烯耐磨层表面润湿并使得粘结剂紧密粘附在其表面,并且在丙烯酸树脂的侧链上引入了适量环氧基团,可以与丙烯酸树脂相互配合与金属支撑片紧密粘结,从而实现聚四氟乙烯耐磨层与金属支撑片的紧密粘结,避免聚四氟乙烯耐磨层的脱离;适量的十二硫醇、过氧化二异丙苯可以使得丙烯酸树脂具有适宜的分子量和粘度;选用聚氨酯树脂、双酚芴环氧树脂与丙烯酸树脂以适宜比例相互配合,可以进一步增加本发明的粘附性,并且大大提高本发明的耐高温性能,使得在轴承制备过程中遇到高温时,本发明还可以保持较高的粘性,避免聚四氟乙烯耐磨层与金属支撑片分离;聚氯乙烯、聚乙烯、聚丙烯、聚苯乙烯和钛白粉相互配合不仅可减少树脂的用量,降低成本,而且可以进一步增加本发明的粘性和机械性能;γ-甲基丙烯酰氧基丙基三甲氧基硅烷可以促进各物质均匀分散并进一步增加本发明的粘性;根据A组分的成分,选择二乙烯三胺、氨乙基哌嗪、γ-氨丙基三乙氧基硅烷以适宜比例相互配合作为固化体系,可以进一步增加本发明的粘性;上述各物质相互配合,使得本发明对聚四氟乙烯耐磨层与金属支撑片均具有良好的粘附性能,并且自身粘性好,不易剥离、断裂,且耐高温;
2.本发明的自润滑轴承板材具有两个种类,一种不含骨架网,另一种含有骨架网;本发明使用粘合剂粘结,制备工艺简单;相对于传统只能选择钢板和铜粉两种金属材料的烧结工艺方式,本发明可以根据工况和理论设计要求,可以选择多种材料作为金属支撑片和骨架网的制作,如:需要轻量化设计时,可以选择铝金属或者合金材料作为金属支撑片,需耐腐蚀设计时,可以选择不锈钢或者合金材料作为金属支撑片和骨架网的材料;本发明还避免常规方法中铜粉烧结导致的能源消耗高、污染环境、存在安全隐患、在加工轴承和使用轴承过程中铜粉容易脱落的问题,并且避免了铜粉轧制导致的轴承承载力低、寿命短的问题,增加了轴承的承载力;选择适宜的烘焙,热压,冷压工艺,可以进一步增加轴承板材的性能;
3.骨架网选用磷青铜材料,具有良好的柔韧性,可以进一步增加本发明的加工性能;金属支撑片的粗糙面可以增加粘合剂的粘附性;本发明使用耐磨软带,替代传统工艺中的粉状耐磨材料,避免了扎制工艺导致的轴承寿命短的问题,且避免了粉状耐磨材料容易脱落的问题;选择耐磨软带的厚度为0.1-0.5mm,远厚于普通自润滑轴承粉状耐磨材料层的厚度(0.01-0.03mm),使得本发明具有适宜的弹性,在轴承同轴度较大情况下有微调功能,大大增加了轴承的使用寿命;通过选择适宜的耐磨软带、骨架网、金属支撑片、粘合剂材料相互配合,并结合适宜制备方法,使得本发明所得自润滑轴承板材具有薄壁、耐磨性能的同时,还具有较大的承载力,且本发明制备的自润滑轴承安装和使用方便。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
实施例1
一种轴承板材用粘合剂,其原料包括A组分、B组分,其中A组分、B组分的重量比为1:0.2;
A组分的原料按重量份包括:NCO含量为17wt%的聚氨酯树脂15份,双酚芴环氧树脂10份,丙烯酸树脂50份,正己烷20份,γ-甲基丙烯酰氧基丙基三甲氧基硅烷3份,聚氯乙烯8份,钛白粉15份;
B组分的原料按重量份包括:二乙烯三胺6份,氨乙基哌嗪25份,γ-氨丙基三乙氧基硅烷0.5份;
其中,在丙烯酸树脂的制备过程中,将甲基丙烯酸三氟乙酯、甲基丙烯酸缩水甘油酯、甲基丙烯酸十二氟庚酯、丙烯酸丁酯、十二硫醇、引发剂A混匀,升温至80℃,保温搅拌40min;降温至60℃,加入引发剂B混匀,保温24h,升温至120℃,保温搅拌30min得到丙烯酸树脂,其中,引发剂A、引发剂B均为过氧化二异丙苯,甲基丙烯酸三氟乙酯、甲基丙烯酸缩水甘油酯、甲基丙烯酸十二氟庚酯、丙烯酸丁酯、十二硫醇、引发剂A的重量比为5:40:20:35:3:1,引发剂A、引发剂B的重量比为1:0.01。
实施例2
一种轴承板材用粘合剂,其原料包括A组分、B组分,其中A组分、B组分的重量比为1:0.1;
A组分的原料按重量份包括:NCO含量为14wt%的聚氨酯树脂10份,双酚芴环氧树脂30份,丙烯酸树脂30份,丙酮30份,γ-甲基丙烯酰氧基丙基三甲氧基硅烷1份,聚乙烯10份,钛白粉10份;
B组分的原料按重量份包括:二乙烯三胺8份,氨乙基哌嗪15份,γ-氨丙基三乙氧基硅烷1份;
其中,在丙烯酸树脂的制备过程中,将甲基丙烯酸三氟乙酯、甲基丙烯酸缩水甘油酯、甲基丙烯酸十二氟庚酯、丙烯酸丁酯、十二硫醇、引发剂A混匀,升温至70℃,保温搅拌60min;降温至50℃,加入引发剂B混匀,保温36h,升温至110℃,保温搅拌50min得到丙烯酸树脂,其中,引发剂A、引发剂B均为过氧化二异丙苯,甲基丙烯酸三氟乙酯、甲基丙烯酸缩水甘油酯、甲基丙烯酸十二氟庚酯、丙烯酸丁酯、十二硫醇、引发剂A的重量比为10:45:15:40:2:2,引发剂A、引发剂B的重量比为1:0.005。
实施例3
一种轴承板材用粘合剂,其原料包括A组分、B组分,其中A组分、B组分的重量比为1:0.15;
A组分的原料按重量份包括:NCO含量为16wt%的聚氨酯树脂12份,双酚芴环氧树脂20份,丙烯酸树脂40份,乙醇25份,γ-甲基丙烯酰氧基丙基三甲氧基硅烷2份,聚丙烯9份,钛白粉12份;
B组分的原料按重量份包括:二乙烯三胺7份,氨乙基哌嗪20份,γ-氨丙基三乙氧基硅烷0.7份;
其中,在丙烯酸树脂的制备过程中,将甲基丙烯酸三氟乙酯、甲基丙烯酸缩水甘油酯、甲基丙烯酸十二氟庚酯、丙烯酸丁酯、十二硫醇、引发剂A混匀,升温至75℃,保温搅拌50min;降温至55℃,加入引发剂B混匀,保温30h,升温至115℃,保温搅拌40min得到丙烯酸树脂,其中,引发剂A、引发剂B均为过氧化二异丙苯,甲基丙烯酸三氟乙酯、甲基丙烯酸缩水甘油酯、甲基丙烯酸十二氟庚酯、丙烯酸丁酯、十二硫醇、引发剂A的重量比为12:42:17:37:2.5:1.5,引发剂A、引发剂B的重量比为1:0.007。
实施例4
一种自润滑轴承板材,所述自润滑轴承板材包括:厚度为0.5mm耐磨软带、厚度为5mm金属支撑片;所述金属支撑片一面光滑,另一面粗糙;用粘合剂将耐磨软带和金属支撑片的粗糙面粘结,所述粘合剂为实施例3的轴承板材用粘合剂;
其中,自润滑轴承板材的厚度为5.5mm;
金属支撑片的材料为合金钢,金属支撑片粗糙面的表面均匀分布多个凹陷结构,凹陷结构的面积占金属支撑片单面面积的50%,凹陷结构的深度为1mm;
耐磨软带的抗拉强度≥13.2MPa,耐磨软带的断裂伸长率≥150%;
耐磨软带的原料按重量份包括:聚四氟乙烯80份、石墨8份、纤维增强剂12份;
耐磨软带的制备方法为:将耐磨软带原料混匀,以≥40MPa的压力压制成坯料,烧结,切削成软带,经钠化处理得到耐磨软带,其中,烧结的程序为:以升温至360℃,再降温至120℃为一个周期,连续12个周期,总烧结时间为96h;自然状态下耐磨软带原料的体积与坯料体积的比值为3.8:1。
上述自润滑轴承板材的制备方法,包括如下步骤:取耐磨软带、金属支撑片、骨架网进行脱脂处理,接着在耐磨软带的一面、金属支撑片的粗糙面均涂覆稀释后的粘合剂,将金属支撑片的粗糙面和涂有粘合剂的耐磨软带面贴合,然后于180℃烘焙8min,接着调节温度为200℃,压力为10MPa,热压20min,再调节温度为30℃,压力为19MPa冷压得到自润滑轴承板材,其中,用丁酮稀释粘合剂,丁酮与粘合剂的体积比为1:2。
实施例5
一种自润滑轴承板材,所述自润滑轴承板材包括:厚度为0.1mm耐磨软带、厚度为0.2mm骨架网、厚度为0.2mm金属支撑片;所述金属支撑片一面光滑,另一面粗糙;所述骨架网在所述金属支撑片的粗糙面和所述耐磨软带的中间;用粘合剂将耐磨软带、骨架网、金属支撑片粘结,所述粘合剂为实施例3的轴承板材用粘合剂;
其中,自润滑轴承板材的厚度为0.5mm,骨架网的材料为黄铜;
金属支撑片的材料为铝板,金属支撑片粗糙面的表面均匀分布多个凹陷结构,凹陷结构的面积占金属支撑片单面面积的15%,凹陷结构的深度为0.1mm;
耐磨软带的抗拉强度≥13.2MPa,耐磨软带的断裂伸长率≥150%;
耐磨软带的原料按重量份包括:聚四氟乙烯80份、石墨10份、纤维增强剂10份;
耐磨软带的制备方法为:将耐磨软带原料混匀,以≥40MPa的压力压制成坯料,烧结,切削成软带,经钠化处理得到耐磨软带,其中,烧结的程序为:以升温至360℃,再降温至120℃为一个周期,连续10个周期,总烧结时间为80h;自然状态下耐磨软带原料的体积与坯料体积的比值为4:1。
上述自润滑轴承板材的制备方法,包括如下步骤:取耐磨软带、金属支撑片、骨架网进行脱脂处理,接着在耐磨软带的一面、金属支撑片的粗糙面、骨架网表面均涂覆稀释后的粘合剂,将骨架网置于金属支撑片的粗糙面和涂有粘合剂的耐磨软带面之间,然后于160℃烘焙12min,接着调节温度为185℃,压力为12MPa,热压10min,再调节温度为5℃,压力为21MPa冷压得到自润滑轴承板材,其中,用丙酮稀释粘合剂,丙酮与粘合剂的体积比为1:1。
实施例6
一种自润滑轴承板材,所述自润滑轴承板材包括:厚度为0.3mm耐磨软带、厚度为0.3mm骨架网、厚度为2mm金属支撑片;所述金属支撑片一面光滑,另一面粗糙;所述骨架网在所述金属支撑片的粗糙面和所述耐磨软带的中间;用粘合剂将耐磨软带、骨架网、金属支撑片粘结,所述粘合剂为实施例3的轴承板材用粘合剂;
其中,自润滑轴承板材的厚度为2.6mm,骨架网的材料为磷青铜;
金属支撑片的材料为ST12钢板,金属支撑片粗糙面的表面均匀分布多个凹陷结构,凹陷结构的面积占金属支撑片单面面积的25%,凹陷结构的深度为1mm;
耐磨软带的抗拉强度≥13.2MPa,耐磨软带的断裂伸长率≥150%;
耐磨软带的原料按重量份包括:聚四氟乙烯80份、石墨9份、纤维增强剂11份;
耐磨软带的制备方法为:将耐磨软带原料混匀,以≥40MPa的压力压制成坯料,烧结,切削成软带,经钠化处理得到耐磨软带,其中,烧结的程序为:以升温至360℃,再降温至120℃为一个周期,连续10个周期,总烧结时间为80h;自然状态下耐磨软带原料的体积与坯料体积的比值为3.9:1。
上述自润滑轴承板材的制备方法,包括如下步骤:取耐磨软带、金属支撑片、骨架网进行脱脂处理,接着在耐磨软带的一面、金属支撑片的粗糙面、骨架网表面均涂覆稀释后的粘合剂,将骨架网置于金属支撑片的粗糙面和涂有粘合剂的耐磨软带面之间,然后于170℃烘焙10min,接着调节温度为190℃,压力为11MPa,热压15min,再调节温度为20℃,压力为20MPa冷压得到自润滑轴承板材,其中,用乙醇稀释粘合剂,乙醇与粘合剂的体积比为1:1.5。
对照例1
不加丙烯酸树脂,其他同实施例3。
对照例2
不加双酚芴环氧树脂、聚氨酯树脂,其他同实施例3。
对照例3
将B组分改为二氨基二苯基甲烷,其他同实施例3。
对照例4
不加双酚芴环氧树脂、聚氨酯树脂,将实施例3中的丙烯酸树脂替换成普通丙烯酸树脂(其单体为丙烯酸丁酯、丙烯酸),其他同实施例5。
试验例1
将实施例3、对照例1-4中的B组分加入对应的A组分中混匀,然后按照实施例6的原材料和方法制备自润滑轴承板材。
检测耐磨软带、金属支撑片、骨架网的粘结性能,并将各个自润滑轴承板材加工成规格尺寸相同的轴承,观察轴承中耐磨软带、金属支撑片、骨架网的粘结情况,结果如下:
由上表可以看出本发明通过选用适宜的丙烯酸树脂、双酚芴环氧树脂、聚氨酯树脂、固化剂相互配合具有良好的粘结性能,且高温热压后仍具有良好的粘结性。
对照例5
按照裁剪钢板——钢板表面铺铜粉烧结——校平——表面铺非金属减磨材料烧结——棍扎校平的工艺制备自润滑轴承板材,自润滑轴承板材的厚度与实施例6相同,钢板与实施例6的金属支撑片相同,非金属减磨材料与实施例6的耐磨软带相同,铜粉层的厚度与实施例6中骨架网的厚度相同。
试验例2
取实施例6和对照例5的自润滑轴承板材,检测其性能,结果如下表:
结论:由上表可以看出按照本发明制备得到的轴承板材壁薄的同时承载力大、耐磨性好。
备注上述性能数值为实验测试数据,不得作其设计标准使用。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (10)
1.一种轴承板材用粘合剂,其特征在于,其原料包括A组分、B组分,其中A组分、B组分的重量比为1:0.1-0.2;
A组分的原料按重量份包括:聚氨酯树脂10-15份,双酚芴环氧树脂10-30份,丙烯酸树脂30-50份,稀释剂20-30份,硅烷偶联剂A1-3份,添加剂8-10份,填料10-15份;
B组分的原料按重量份包括:二乙烯三胺6-8份,氨乙基哌嗪15-25份,硅烷偶联剂B0.5-1份。
2.根据权利要求1所述轴承板材用粘合剂,其特征在于,在丙烯酸树脂的制备过程中,将甲基丙烯酸三氟乙酯、甲基丙烯酸缩水甘油酯、甲基丙烯酸十二氟庚酯、丙烯酸丁酯、十二硫醇、引发剂A混匀,升温至70-80℃,保温搅拌40-60min;降温至50-60℃,加入引发剂B混匀,保温24-36h,升温至110-120℃,保温搅拌30-50min得到丙烯酸树脂;优选地,在丙烯酸树脂的制备过程中,引发剂A、引发剂B均为过氧化二异丙苯;优选地,在丙烯酸树脂的制备过程中,甲基丙烯酸三氟乙酯、甲基丙烯酸缩水甘油酯、甲基丙烯酸十二氟庚酯、丙烯酸丁酯、十二硫醇、引发剂A的重量比为10-15:40-45:15-20:35-40:2-3:1-2;优选地,在丙烯酸树脂的制备过程中,引发剂A、引发剂B的重量比为1:0.005-0.01。
3.根据权利要求1或2所述轴承板材用粘合剂,其特征在于,聚氨酯树脂的NCO含量为14-17wt%;优选地,添加剂为聚氯乙烯、聚乙烯、聚丙烯、聚苯乙烯中的至少一种;优选地,填料为钛白粉;优选地,硅烷偶联剂A为γ-甲基丙烯酰氧基丙基三甲氧基硅烷;优选地,硅烷偶联剂B为γ-氨丙基三乙氧基硅烷;优选地,稀释剂为乙酸乙酯、正已烷、乙醇、丙酮中的至少一种。
4.一种自润滑轴承板材,其特征在于,所述自润滑轴承板材包括:耐磨软带、金属支撑片;所述金属支撑片一面光滑,另一面粗糙;用粘合剂将耐磨软带和金属支撑片的粗糙面粘结,所述粘合剂为如权利要求1-3任一项所述轴承板材用粘合剂。
5.根据权利要求4所述自润滑轴承板材,其特征在于,所述自润滑轴承板材还包括骨架网;所述骨架网在所述金属支撑片的粗糙面和所述耐磨软带的中间;用粘合剂将耐磨软带、骨架网、金属支撑片粘结。
6.根据权利要求4或5所述自润滑轴承板材,其特征在于,自润滑轴承板材的厚度为0.5-5.5mm;优选地,金属支撑片的厚度为0.2-5mm;优选地,金属支撑片粗糙面的表面均匀分布多个凹陷结构;优选地,凹陷结构的面积占金属支撑片单面面积的15-50%;优选地,金属支撑片的材料为铁、铜、铝、锡、锌、钛、钪、钒、铬、锰、钴、镍、合金钢、电镀钢;优选地,耐磨软带的厚度为0.1-0.5mm;优选地,耐磨软带的抗拉强度≥13.2MPa,耐磨软带的断裂伸长率≥150%;优选地,耐磨软带的原料按重量份包括:聚四氟乙烯80份、石墨8-10份、纤维增强剂10-12份;优选地,耐磨软带的制备方法为:将耐磨软带原料混匀,压制成坯料,烧结,切削成软带,经钠化处理得到耐磨软带;优选地,烧结的程序为:以升温至360℃,再降温至120℃为一个周期,连续10-12个周期,总烧结时间为80-96h;优选地,压制成坯料的压力≥40MPa;优选地,自然状态下耐磨软带原料的体积与坯料体积的比值为3.8-4:1。
7.根据权利要求5或6所述自润滑轴承板材,其特征在于,骨架网的厚度为0.15-0.5mm;优选地,骨架网的材料为金属;优选地,骨架网的材料为磷青铜、黄铜、合金钢、电镀钢;优选地,骨架网的材料为磷青铜。
8.一种如权利要求4-8任一项所述自润滑轴承板材的制备方法,其特征在于,包括如下步骤:在耐磨软带的一面、金属支撑片的粗糙面均涂覆粘合剂,将金属支撑片的粗糙面和涂有粘合剂的耐磨软带面贴合,然后烘焙,热压,冷压得到自润滑轴承板材。
9.根据权利要求8所述自润滑轴承板材的制备方法,其特征在于,当自润滑轴承板材包括骨架网时,在耐磨软带的一面、金属支撑片的粗糙面、骨架网表面均涂覆粘合剂,将骨架网置于金属支撑片的粗糙面和涂有粘合剂的耐磨软带面之间,然后烘焙,热压,冷压得到自润滑轴承板材。
10.根据权利要求8或9所述自润滑轴承板材的制备方法,其特征在于,烘焙温度为160-180℃,烘焙时间为8-12min;优选地,热压温度为185-200℃,热压压力为10-12MPa,热压时间为10-20min;优选地,冷压温度为5-30℃,冷压压力为19-21MPa;优选地,粘合剂经有机溶剂稀释后,再涂覆于金属支撑片、骨架网和耐磨软带表面;优选地,粘合剂和有机溶剂的体积比为1:1-2;优选地,有机溶剂为丁酮、丙酮、乙醇中的至少一种。
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CN113187820A (zh) * | 2021-04-20 | 2021-07-30 | 怀宁吉利来精密机械科技有限公司 | 新型高性能粘合复合自润滑复合材料和复合轴承 |
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