CN108688266A - 一种镂空贴合式密封橡胶材料及其制备方法 - Google Patents
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Abstract
本发明公开了一种镂空贴合式密封橡胶材料及其制备方法,包括主料和骨架;所述的主料的组分包括:丁腈橡胶、丙烯酸酯橡胶、环氧树脂、偏苯三酸酯、三氧化二铝、聚酰亚胺树脂、白炭黑、防老剂、硫磺;所述的骨架为石墨烯内芯;所述的石墨烯内芯呈板体结构;所述的石墨烯内芯上设有多个均匀分布的贴合孔,形成石墨烯内芯的镂空结构;所述骨架置于主料内部。本发明结构强度高以及贴合稳固。
Description
技术领域
本发明涉及一种镂空贴合式密封橡胶材料及其制备方法。
背景技术
密封制品是各类机械的重要基础元件,几乎所有的工业部门都离不开它。密封元件的质量如何,直接关系到机器的使用寿命及运转可靠性。如果密封件质量低劣,轻则带来损失和麻烦,重则会造成恶性事故。尤其是在工作压力高的环境下,密封圈所承受的负荷较大,在设备运行过程中经常碰到密封件损坏情况,有的密封件只能使用1~2 个月,甚至更短的时间,就需要更换,给企业的连续生产带来的麻烦。因此,目前迫切需要一种能在高压环境下使用较长周期的橡胶密封材料。
发明内容
针对上述现有技术的不足之处,本发明解决的问题为:提供一种结构强度高、贴合稳固的密封橡胶材料及其制备方法。
为解决上述问题,本发明采取的技术方案如下:
一种镂空贴合式密封橡胶材料,包括主料和骨架;所述的主料的组分以及各组分的质量份数包括:丁腈橡胶65~70 份、丙烯酸酯橡胶25~35 份、环氧树脂4~10份、偏苯三酸酯9~12份、三氧化二铝5~10份、聚酰亚胺树脂2~5份、白炭黑7~9份、防老剂1~3份、硫磺3~4份;所述的骨架为石墨烯内芯;所述的石墨烯内芯呈板体结构;所述的石墨烯内芯上设有多个均匀分布的贴合孔,形成石墨烯内芯的镂空结构;所述骨架置于主料内部;所述的骨架与主料的体积比为1:5~1:7。
进一步,所述的主料中各组分的质量份数为:丁腈橡胶68 份、丙烯酸酯橡胶30份、环氧树脂8份、偏苯三酸酯10份、三氧化二铝5份、聚酰亚胺树脂3份、白炭黑8份、防老剂2份、硫磺3份。
进一步,所述的骨架与主料的体积比为1:6。
一种镂空贴合式密封橡胶材料的制备方法,步骤如下:
S1、将主料中的丁腈橡胶、丙烯酸酯橡胶、环氧树脂、偏苯三酸酯按照重量份称取,然后加入密炼机中进行密炼,得到密炼好的胶料;
S2、将密炼好的胶料投入到开炼机中,然后按照重量份称取三氧化二铝、聚酰亚胺树脂、白炭黑、防老剂、硫磺投入到开炼机中进行混炼,压制成型,形成预成型橡胶;
S3、将石墨烯内芯上均匀切割出多个贴合孔,形成骨架;
S4、取两片预成型橡胶和骨架置于复合机上进行热压复合,形成预成型橡胶-骨架-预成型橡胶的夹心式密封橡胶材料结构;骨架两侧的预成型橡胶通过贴合孔间隔形贴合对接;
S5、将预成型橡胶-骨架-预成型橡胶的夹心式密封橡胶材料结构放入到硫化设备中的模具内,进行硫化处理,通过切割机进行切割修边后得到密封橡胶材料。
进一步,所述步骤S1中将各组分投入到密炼机中于90~98℃下密炼8~10min。
进一步,所述步骤S2中各组分在开炼机中于100~110℃下混炼6~8min。
进一步,所述步骤S3中切割的贴合孔呈圆形结构;所述的多个贴合孔呈阵列结构分布;所述的贴合孔相邻圆心间距长度为贴合孔直径长度的3~5倍。
进一步,所述步骤S4中复合机的温度为80~100℃,压力为15~20kg/cm2 ;控制石墨烯内芯四周边缘延伸至预成型橡胶四周边缘处。
进一步,所述步骤S5中的硫化温度为160~170℃,硫化时间为25~35min,硫化压力为15~25Mpa。
本发明的有益效果
本发明改变了传统的橡胶密封件的结构,本发明在橡胶密封件的内部增设了骨架,并且骨架是一块石墨烯内芯,石墨烯的机械强度高,而且具备很强的韧性,作为密封性橡胶的内部骨架再合适不过,但是石墨烯内芯润滑性比较好,和胶料的粘接性太差,于是本发明在石墨烯内芯上切割多个均匀分布的贴合孔,使得在热压复合工艺中骨架两侧的预成型橡胶通过贴合孔间隔形贴合对接,使得整个结构更加的稳固,整个结构不但强度和韧性得到了提升,而且连接的更加牢固稳定,本发明的橡胶密封件的结构以及制备方法属于橡胶密封件领域的首创,应用前景广泛。
具体实施方式
下面对本发明内容作进一步详细说明。
实施例1
一种镂空贴合式密封橡胶材料,包括主料和骨架。所述的主料的组分以及各组分的质量份数包括:丁腈橡胶65 份、丙烯酸酯橡胶25 份、环氧树脂4份、偏苯三酸酯9份、三氧化二铝5份、聚酰亚胺树脂2份、白炭黑7份、防老剂1份、硫磺3份;所述的骨架为石墨烯内芯;所述的石墨烯内芯呈板体结构;所述的石墨烯内芯上设有多个均匀分布的贴合孔,形成石墨烯内芯的镂空结构;所述骨架置于主料内部;所述的骨架与主料的体积比为1:5。
一种镂空贴合式密封橡胶材料的制备方法,步骤如下:
S1、将主料中的丁腈橡胶、丙烯酸酯橡胶、环氧树脂、偏苯三酸酯按照重量份称取,然后加入密炼机中进行密炼,得到密炼好的胶料;将各组分投入到密炼机中于90℃下密炼8min。
S2、将密炼好的胶料投入到开炼机中,然后按照重量份称取三氧化二铝、聚酰亚胺树脂、白炭黑、防老剂、硫磺投入到开炼机中进行混炼,压制成型,形成预成型橡胶;各组分在开炼机中于100℃下混炼6min。
S3、将石墨烯内芯上均匀切割出多个贴合孔,形成骨架。所述步骤S3中切割的贴合孔呈圆形结构;所述的多个贴合孔呈阵列结构分布;所述的贴合孔相邻圆心间距长度为贴合孔直径长度的3倍。此处的阵列结构分布具体为整数行整数列的结构分布,相邻代表位于同一行或者同一列的相邻贴合孔圆心。
S4、取两片预成型橡胶和骨架置于复合机上进行热压复合,形成预成型橡胶-骨架-预成型橡胶的夹心式密封橡胶材料结构;控制复合机的温度为80℃,压力为15kg/cm2 。控制石墨烯内芯四周边缘延伸至预成型橡胶四周边缘处。骨架两侧的预成型橡胶通过贴合孔间隔形贴合对接。
S5、将预成型橡胶-骨架-预成型橡胶的夹心式密封橡胶材料结构放入到硫化设备中的模具内,进行硫化处理,通过切割机进行切割修边后得到密封橡胶材料,硫化温度为160℃,硫化时间为25min,硫化压力为15Mpa。
实施例2
一种镂空贴合式密封橡胶材料,包括主料和骨架。所述的主料的组分以及各组分的质量份数包括:丁腈橡胶68 份、丙烯酸酯橡胶30 份、环氧树脂8份、偏苯三酸酯10份、三氧化二铝5份、聚酰亚胺树脂3份、白炭黑8份、防老剂2份、硫磺3份。所述的骨架为石墨烯内芯;所述的石墨烯内芯呈板体结构;所述的石墨烯内芯上设有多个均匀分布的贴合孔,形成石墨烯内芯的镂空结构;所述骨架置于主料内部;所述的骨架与主料的体积比为1:6。
一种镂空贴合式密封橡胶材料的制备方法,步骤如下:
S1、将主料中的丁腈橡胶、丙烯酸酯橡胶、环氧树脂、偏苯三酸酯按照重量份称取,然后加入密炼机中进行密炼,得到密炼好的胶料;将各组分投入到密炼机中于95℃下密炼9min。
S2、将密炼好的胶料投入到开炼机中,然后按照重量份称取三氧化二铝、聚酰亚胺树脂、白炭黑、防老剂、硫磺投入到开炼机中进行混炼,压制成型,形成预成型橡胶;各组分在开炼机中于105℃下混炼7min。
S3、将石墨烯内芯上均匀切割出多个贴合孔,形成骨架。所述步骤S3中切割的贴合孔呈圆形结构;所述的多个贴合孔呈阵列结构分布;所述的贴合孔相邻圆心间距长度为贴合孔直径长度的4倍。
S4、取两片预成型橡胶和骨架置于复合机上进行热压复合,形成预成型橡胶-骨架-预成型橡胶的夹心式密封橡胶材料结构;控制复合机的温度为90℃,压力为18kg/cm2 。控制石墨烯内芯四周边缘延伸至预成型橡胶四周边缘处。骨架两侧的预成型橡胶通过贴合孔间隔形贴合对接。
S5、将预成型橡胶-骨架-预成型橡胶的夹心式密封橡胶材料结构放入到硫化设备中的模具内,进行硫化处理,通过切割机进行切割修边后得到密封橡胶材料,硫化温度为165℃,硫化时间为30min,硫化压力为20Mpa。
实施例3
一种镂空贴合式密封橡胶材料,包括主料和骨架。所述的主料的组分以及各组分的质量份数包括:丁腈橡胶70 份、丙烯酸酯橡胶35 份、环氧树脂10份、偏苯三酸酯12份、三氧化二铝10、聚酰亚胺树脂5份、白炭黑9份、防老剂3份、硫磺4份;所述的骨架为石墨烯内芯;所述的石墨烯内芯呈板体结构;所述的石墨烯内芯上设有多个均匀分布的贴合孔,形成石墨烯内芯的镂空结构;所述骨架置于主料内部;所述的骨架与主料的体积比为1:7。
一种镂空贴合式密封橡胶材料的制备方法,步骤如下:
S1、将主料中的丁腈橡胶、丙烯酸酯橡胶、环氧树脂、偏苯三酸酯按照重量份称取,然后加入密炼机中进行密炼,得到密炼好的胶料;将各组分投入到密炼机中于98℃下密炼10min。
S2、将密炼好的胶料投入到开炼机中,然后按照重量份称取三氧化二铝、聚酰亚胺树脂、白炭黑、防老剂、硫磺投入到开炼机中进行混炼,压制成型,形成预成型橡胶;各组分在开炼机中于110℃下混炼8min。
S3、将石墨烯内芯上均匀切割出多个贴合孔,形成骨架。所述步骤S3中切割的贴合孔呈圆形结构;所述的多个贴合孔呈阵列结构分布;所述的贴合孔相邻圆心间距长度为贴合孔直径长度的5倍。
S4、取两片预成型橡胶和骨架置于复合机上进行热压复合,形成预成型橡胶-骨架-预成型橡胶的夹心式密封橡胶材料结构;控制复合机的温度为100℃,压力为20g/cm2 。控制石墨烯内芯四周边缘延伸至预成型橡胶四周边缘处。骨架两侧的预成型橡胶通过贴合孔间隔形贴合对接。
S5、将预成型橡胶-骨架-预成型橡胶的夹心式密封橡胶材料结构放入到硫化设备中的模具内,进行硫化处理,通过切割机进行切割修边后得到密封橡胶材料,硫化温度为170℃,硫化时间为35min,硫化压力为25Mpa。
本发明改变了传统的橡胶密封件的结构,本发明在橡胶密封件的内部增设了骨架,并且骨架是一块石墨烯内芯,石墨烯的机械强度高,而且具备很强的韧性,作为密封性橡胶的内部骨架再合适不过,但是石墨烯内芯和胶料的粘接性太差,于是本发明在石墨烯内芯上切割多个均匀分布的贴合孔,使得在热压复合工艺中骨架两侧的预成型橡胶通过贴合孔间隔形贴合对接,使得整个结构更加的稳固,整个结构不但强度和韧性得到了提升,而且连接的更加牢固稳定,本发明的橡胶密封件的结构以及制备方法属于橡胶密封件领域的首创,应用前景广泛。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (9)
1.一种镂空贴合式密封橡胶材料,其特征在于,包括主料和骨架;所述的主料的组分以及各组分的质量份数包括:丁腈橡胶65~70 份、丙烯酸酯橡胶25~35 份、环氧树脂4~10份、偏苯三酸酯9~12份、三氧化二铝5~10份、聚酰亚胺树脂2~5份、白炭黑7~9份、防老剂1~3份、硫磺3~4份;所述的骨架为石墨烯内芯;所述的石墨烯内芯呈板体结构;所述的石墨烯内芯上设有多个均匀分布的贴合孔,形成石墨烯内芯的镂空结构;所述骨架置于主料内部;所述的骨架与主料的体积比为1:5~1:7。
2.根据权利要求1所述的镂空贴合式密封橡胶材料,其特征在于,所述的主料中各组分的质量份数为:丁腈橡胶68 份、丙烯酸酯橡胶30 份、环氧树脂8份、偏苯三酸酯10份、三氧化二铝5份、聚酰亚胺树脂3份、白炭黑8份、防老剂2份、硫磺3份。
3.根据权利要求1所述的镂空贴合式密封橡胶材料,其特征在于,所述的骨架与主料的体积比为1:6。
4.一种根据权利要求1至3任意一项所述的镂空贴合式密封橡胶材料的制备方法,其特征在于,步骤如下:
S1、将主料中的丁腈橡胶、丙烯酸酯橡胶、环氧树脂、偏苯三酸酯按照重量份称取,然后加入密炼机中进行密炼,得到密炼好的胶料;
S2、将密炼好的胶料投入到开炼机中,然后按照重量份称取三氧化二铝、聚酰亚胺树脂、白炭黑、防老剂、硫磺投入到开炼机中进行混炼,压制成型,形成预成型橡胶;
S3、将石墨烯内芯上均匀切割出多个贴合孔,形成骨架;
S4、取两片预成型橡胶和骨架置于复合机上进行热压复合,形成预成型橡胶-骨架-预成型橡胶的夹心式密封橡胶材料结构;骨架两侧的预成型橡胶通过贴合孔间隔形贴合对接;
S5、将预成型橡胶-骨架-预成型橡胶的夹心式密封橡胶材料结构放入到硫化设备中的模具内,进行硫化处理,通过切割机进行切割修边后得到密封橡胶材料。
5.根据权利要求4所述的镂空贴合式密封橡胶材料的制备方法,其特征在于,所述步骤S1中将各组分投入到密炼机中于90~98℃下密炼8~10min。
6.根据权利要求4所述的镂空贴合式密封橡胶材料的制备方法,其特征在于,所述步骤S2中各组分在开炼机中于100~110℃下混炼6~8min。
7.根据权利要求4所述的镂空贴合式密封橡胶材料的制备方法,其特征在于,所述步骤S3中切割的贴合孔呈圆形结构;所述的多个贴合孔呈阵列结构分布;所述的贴合孔相邻圆心间距长度为贴合孔直径长度的3~5倍。
8.根据权利要求4所述的镂空贴合式密封橡胶材料的制备方法,其特征在于,所述步骤S4中复合机的温度为80~100℃,压力为15~20kg/cm2 ,控制石墨烯内芯四周边缘延伸至预成型橡胶四周边缘处。
9.根据权利要求4所述的镂空贴合式密封橡胶材料的制备方法,其特征在于,所述步骤S5中的硫化温度为160~170℃,硫化时间为25~35min,硫化压力为15~25Mpa。
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