CN108084351A - 履带车辆衬套用橡胶材料 - Google Patents
履带车辆衬套用橡胶材料 Download PDFInfo
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Abstract
本发明涉及一种氢化丁腈橡胶材料,具体是一种履带车辆衬套用橡胶材料。该材料的组成成分及质量份数如下:氢化丁腈橡胶100份,氧化锌3~5份,硬脂酸(工业级)0.5~1.0份,防老剂TMQ(工业级)0.5~1.0份,防老剂4010NA(工业级)0.5~1.0份,BIBP(纯度96%)2~3.5份,HVA‑2 0.5~1.5份,硫磺0.5~1.0份,DTDM 0.5~0.6份,CZ 0.5~0.6份,炭黑30~35份,白炭黑5~8份,甲基丙烯酸锌5~15份,增塑剂DOS 3~5份,分散助剂1~2份。本发明的材料耐高温、耐老化、耐曲挠、耐臭氧、耐油性能、强度和拉伸性能优异,与碳纤维材料粘接性能好、寿命长。
Description
技术领域
本发明涉及一种氢化丁腈橡胶材料,具体是一种履带车辆衬套用橡胶材料。
技术背景
履带式特种车辆橡胶衬套部件受到疲劳生热、曲挠、臭氧、尘土、湿气,油污等多因素耦合影响,从而导致橡胶材料龟裂、开裂,脱胶,造成衬套失效。为了满足履带式特种车辆橡胶衬套部件的性能要求,要求橡胶材料的绍尔A硬度在65-70,拉伸强度大于24MPa,碳纤维复合材料与橡胶基体的剥离强度大于5KN/m,并具有良好的耐疲劳,耐龟裂、开裂性能。碳纤维复合材料与橡胶的结合,可以充分发挥橡胶的减振、降噪优势与碳纤维复合材料轻质、高强度优势。但现有橡胶材料在伸长率、拉伸强度、耐高温性、耐老化性和耐油性,以及与碳纤维材料的结合性等方面的综合特性难以满足履带式特种车辆衬套的使用要求。
发明内容
本发明所要解决的技术问题是,克服现有橡胶材料的缺陷,提供一种耐高温、耐老化、耐曲挠、耐臭氧、耐油性能、强度和拉伸性能优异,与碳纤维材料粘接性能好、寿命长的履带车辆衬套用橡胶材料。
本发明的履带车辆衬套用橡胶材料的组成成分及质量份数如下:氢化丁腈橡胶100份,氧化锌3~5份,硬脂酸(工业级)0.5~1.0份,防老剂TMQ(工业级)0.5~1.0份,防老剂4010NA(工业级)0.5~1.0份,BIBP(纯度96%)2~3.5份,HVA-2 0.5~1.5份,硫磺0.5~1.0份,DTDM 0.5~0.6份,CZ 0.5~0.6份,炭黑30~35份,白炭黑5~8份,甲基丙烯酸锌5~15份,增塑剂DOS 3~5份,分散助剂1~2份。
优选的,上述成分中,所述BIBP的质量份数为3份。
优选的,上述成分中,所述甲基丙烯酸锌的质量份数为10份。
优选的,上述成分中,白炭黑的质量份数为5份。
本发明的优点体现在:
1、甲基丙烯酸锌(ZDMA)增强HNBR硫化胶在保持高的扯断伸长率的同时具有高的拉伸强度和邵尔A型硬度,ZDMA单体在过氧化物(如BIBP)自由基的引发下,可产生自由基,产生的自由基在橡胶基体中,可以使橡胶基体交联、接枝反应或产生原位聚合反应,原位聚合反应生成纳米级离子聚合物聚甲基丙烯酸锌(PZDMA),对橡胶起到很好的补强作用。因此ZDMA具有交联和原位增强的双重作用。硫化过程中,不饱和羧酸金属盐形成了在粘合界面生成具有粘合作用的化学键(离子键、共价键),同时在橡胶内部产生稳定的橡胶分子交联键,从而增强了HNBR硫化胶和碳纤维复合材料的粘接力;
2、另一方面,采用BIBP与硫黄/促进剂的复合硫化体系,并添加交联助剂N,N,-间苯撑双马来酰亚胺(HVA-2),使HNBR橡胶具有突出的耐曲挠性,和低的压缩永久变形。补强体系除ZDMA之外,还加入了白炭黑和炭黑,白炭黑表面极性硅烷醇结构和HNBR的氰基有良好亲和性,对HNBR起到好的补强作用,炭黑的加入有助于降低压缩永久变形并提高强度,在硫化工艺上采用两段硫化的方式,来平衡硫磺硫化体系和过氧化物硫化体系硫化不同步的问题。使胶料的耐高温、耐老化、耐曲挠、耐臭氧、耐油性能、强度和拉伸性能等各项指标要求得到了平衡。
具体实施方式
本发明对实施例的材料进行制造和试验。
所采用的主要设备和仪器如下:
两辊开炼机,无锡阳昇;
密炼机,无锡阳昇;
平板硫化机,宁波千普机械制造有限公司;
电子天平(最大称量500g,感量0.01g);
CMT6104电子万能试验机,美特斯工业系统(中国)有限公司;
邵氏A型硬度计,上海六菱仪器厂;
无转子硫化仪,江都明珠试验机械厂;
老化试验箱,江都明珠试验机械厂。
试验原料如下:
HNBR,德国朗盛;
N330,上海卡博特;
N550,上海卡博特;
白炭黑RS-200,扬中格拉斯;
ZDMA,南京友好助剂化工有限责任公司;
氧化锌,台茂宝业股份有限公司;
硬脂酸,江阴市朝阳精细化工有限公司;
硫磺,盐城中雅化工科技有限公司;
促进剂CZ,浙江黄岩浙东橡胶助剂有限公司
促进剂DTDM,浙江黄岩浙东橡胶助剂有限公司;
硫化剂BIBP(双叔丁基过氧化二异丙苯),湖南以翔科技有限公司;
硫化助剂HVA-2,台州黄岩东海化工;
DOS,山东海化天际化工有限公司;
防老剂TMQ,中国石化集团南京化学工业有限公司;
防老剂4010NA,中国石化集团南京化学工业有限公司;
促进剂DTDM,无锡华盛化工助剂厂;
底涂、面涂胶黏剂,开姆洛克。
生产加工工艺如下:
1、塑炼:将称好的HNBR橡胶生胶投入到开炼机上,在最小辊矩下薄通3~5次;
2、混炼:用密炼机进行混炼,加入防老剂TMQ和4010NA、氧化锌、硬脂酸、分散助剂等小料和ZDMA混炼5min,然后加入白炭黑、炭黑、增塑剂混炼10min。冷却后在开炼机上加促进剂、硫磺、BIBP,打卷5次,薄通5次,打三角包5次后出片,静置8h再返炼使用;
3、热硫化成型:在碳纤维复合材料上刷涂优选的底涂及面涂胶黏剂,烘干后和HNBR混炼胶一体热硫化成型。硫化条件160℃×25min+170℃×30min热处理。
实施例一的组分及检测结果如表1、表2所示:
表1
原材料及规格 | 以橡胶100份计 |
HNBR | 100 |
ZnO | 5 |
硬脂酸 | 1 |
N330 | 10 |
N550 | 15 |
白炭黑 | 5 |
ZDMA | 0,5,10,15 |
4010NA | 1 |
TMQ | 1 |
CZ | 0.5 |
DTDM | 0.5 |
硫磺 | 1 |
BIBP | 1.5 |
HVA-2 | 1 |
DOS | 5 |
表2
从表2可以看出,随着ZDMA含量的增加,剥离强度和拉伸强度也随之增加。
实施例二的组分及检测结果如表3、表4所示:
表3
原材料及规格 | 以橡胶100份计 |
HNBR | 100 |
ZnO | 5 |
硬脂酸 | 1 |
N330 | 10 |
N550 | 12 |
白炭黑 | 5 |
ZDMA | 10 |
4010NA | 1 |
TMQ | 1 |
CZ | 0.5 |
DTDM | 0.5 |
硫磺 | 1 |
BIBP | 1.5,3,4.5 |
HVA-2 | 1 |
DOS | 3 |
表4
曲挠测试为德墨西亚型。
从表4可以看出,曲挠次数随着BIBP含量的增加却降低。150℃×72h热空气老化后仍有85%以上的拉伸强度保持率,具有优异的耐老化性能。
基于以上实验结果,为了实现本发明的目的,满足特种履带车辆衬套的使用要求,硬度在邵氏A65-70之间,HNBR和碳纤维复合材料具有可靠的粘接性能,曲挠次数高、耐疲劳,耐油及耐老化性能。
Claims (4)
1.一种履带车辆衬套用橡胶材料,其特征是:其组成成分及质量份数为,
氢化丁腈橡胶100份,氧化锌3~5份,硬脂酸(工业级)0.5~1.0份,防老剂TMQ(工业级)0.5~1.0份,防老剂4010NA(工业级) 0.5~1.0份,BIBP(纯度96%)2~3.5份,HVA-2 0.5~1.5份,硫磺0.5~1.0份,DTDM 0.5~0.6份,CZ 0.5~0.6份,炭黑30~35份,白炭黑5~8份,甲基丙烯酸锌5~15份,增塑剂DOS 3~5份,分散助剂1~2份。
2.根据权利要求1的履带车辆衬套用橡胶材料,其特征是:所述BIBP的质量份数为3份。
3.根据权利要求1的履带车辆衬套用橡胶材料,其特征是:所述甲基丙烯酸锌的质量份数为10份。
4.根据权利要求1的履带车辆衬套用橡胶材料,其特征是:所述白炭黑的质量份数为5份。
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