CN112175257A - 一种发泡耐磨型橡胶 - Google Patents
一种发泡耐磨型橡胶 Download PDFInfo
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- PZKNKZNLQYKXFV-UHFFFAOYSA-N 4-amino-2-(aminomethyl)phenol Chemical compound NCC1=CC(N)=CC=C1O PZKNKZNLQYKXFV-UHFFFAOYSA-N 0.000 claims description 2
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Abstract
本发明公开了一种发泡耐磨型橡胶,包括下述重量份组成:丁腈橡胶:80~100份、改性甲阶酚醛树脂:5~10份、发泡剂:0.5~1份、硫化剂:2~5份、促进剂:2~5份、硬脂酸:1~3份;所述改性甲阶酚醛树脂由下述摩尔份物质反应而成:苯酚:20~30份、氨基苯酚:5~10份、甲醛:25~40份、含氯硅烷:5~10份、催化剂:0.1~0.5份。本发明制备的橡胶具有高耐磨和较好力学性能的特点。
Description
技术领域
本发明涉及高分子材料,更具体的说是涉及一种发泡耐磨型橡胶。
背景技术
丁腈橡胶是由丁二烯和丙烯腈经乳液聚合法制得的,丁腈橡胶主要采用低温乳液聚合法生产,耐油性极好,丁腈橡胶主要用于制造耐油橡胶制品。但是相对聚氨酯而言,其耐磨性还是相对较差,并且其力学性能较差的特点,特别是制成发泡材料以后。
发明内容
针对现有技术存在的不足,本发明的目的在于提供一种发泡耐磨型橡胶。
为实现上述目的,本发明提供了如下技术方案:
一种发泡耐磨型橡胶,
包括下述重量份组成:
丁腈橡胶:80~100份
改性甲阶酚醛树脂:5~10份
发泡剂:0.5~1份
硫化剂:2~5份
促进剂:2~5份
硬脂酸:1~3份;
所述改性甲阶酚醛树脂由下述摩尔份物质反应而成:
苯酚:20~30份
氨基苯酚:5~10份
甲醛:25~40份
含氯硅烷:5~10份
催化剂:0.1~0.5份。
作为本发明的进一步改进,
所述含氯硅烷为氯甲基三氧基硅烷或氯丙基三乙氧基硅烷。
作为本发明的进一步改进,
所述氨基苯酚为对氨基苯酚或2,5-二氨基苯酚或3,4-二氨基苯酚或2-氨基甲基-4-氨基苯酚或4-(2-氨基乙氧基)苯酚。
作为本发明的进一步改进,
所述催化剂为氢氧化钠或氢氧化钾或三乙胺。
作为本发明的进一步改进,
所述改性甲阶酚醛树脂制备方法为:
步骤一:将苯酚、氨基苯酚、甲醛溶于水中,之后加入催化剂;
步骤二:将溶液升温至70℃,反应时间为3~4小时;
步骤三:冷却至室温,加入盐酸调节pH值至7;
步骤四:加入含氯硅烷,升温至110℃~130℃,反应5~8小时;
步骤五:冷却至室温,通过蒸馏水进行水洗,在真空度为0.05~-0.06MPa条件下,减压蒸馏脱除水分,得到改性甲阶酚醛树脂。
作为本发明的进一步改进,
所述促进剂为硫代氨基甲酰次磺酰胺。
作为本发明的进一步改进,
所述发泡剂为碳酸钠。
在本发明中,以丁腈橡胶为主体,加入改性甲阶酚醛树脂增强,甲阶酚醛树脂是苯酚或取代苯酚同甲醛的反应产物,其特点是能够通过加入发泡剂能够发泡的一种树脂,并且与丁腈橡胶的相容性好,因此本发明选用甲阶酚醛树脂对丁腈橡胶进行改性,同时普通甲阶酚醛树脂虽然一定程度上能够增强丁腈橡胶的力学性能,但是其效果并不理想。因此在本发明的中的改性甲阶酚醛树脂,制备过程中,通过加入氨基苯酚,在整个酚醛树脂的结构上引入氨基,之后加入含氯硅烷,含氯硅烷上的能够脱去-Cl,氨基上也会脱去一个H,含氯硅烷就聚合在氨基上,这样就利用甲阶酚醛树脂与丁腈橡胶相容性好的特定,将硅烷引入到整个丁腈橡胶中,使得丁腈橡胶具有更好的力学性能和耐磨性。
具体实施方式
实施例一:
包括下述重量份组成:
丁腈橡胶:100份
改性甲阶酚醛树脂:10份
发泡剂:1份
硫化剂:5份
促进剂:3份
硬脂酸:2份;
所述改性甲阶酚醛树脂由下述摩尔份物质反应而成:
苯酚:30份
氨基苯酚:10份
甲醛:40份
含氯硅烷:10份
催化剂:0.5份。
所述含氯硅烷为氯甲基三氧基硅烷,
所述氨基苯酚为对氨基苯酚。
所述催化剂为氢氧化钠。
所述改性甲阶酚醛树脂制备方法为:
步骤一:将苯酚、氨基苯酚、甲醛溶于水中,之后加入催化剂;
步骤二:将溶液升温至70℃,反应时间为3~4小时;
步骤三:冷却至室温,加入盐酸调节pH值至7;
步骤四:加入含氯硅烷,升温至110℃~130℃,反应5~8小时;
步骤五:冷却至室温,通过蒸馏水进行水洗,在真空度为0.05~-0.06MPa条件下,减压蒸馏脱除水分,得到改性甲阶酚醛树脂。
所述促进剂为硫代氨基甲酰次磺酰胺。
所述发泡剂为碳酸钠。
实施例二:
包括下述重量份组成:
丁腈橡胶:100份
改性甲阶酚醛树脂:10份
发泡剂:1份
硫化剂:5份
促进剂:3份
硬脂酸:2份;
所述改性甲阶酚醛树脂由下述摩尔份物质反应而成:
苯酚:30份
氨基苯酚:10份
甲醛:40份
含氯硅烷:10份
催化剂:0.5份。
所述含氯硅烷为氯丙基三乙氧基硅烷,
所述氨基苯酚为4-(2-氨基乙氧基)苯酚。
所述催化剂为氢氧化钠。
所述改性甲阶酚醛树脂制备方法为:
步骤一:将苯酚、氨基苯酚、甲醛溶于水中,之后加入催化剂;
步骤二:将溶液升温至70℃,反应时间为3~4小时;
步骤三:冷却至室温,加入盐酸调节pH值至7;
步骤四:加入含氯硅烷,升温至110℃~130℃,反应5~8小时;
步骤五:冷却至室温,通过蒸馏水进行水洗,在真空度为0.05~-0.06MPa条件下,减压蒸馏脱除水分,得到改性甲阶酚醛树脂。
所述促进剂为硫代氨基甲酰次磺酰胺。
所述发泡剂为碳酸钠。
对比例一:
包括下述重量份组成:
丁腈橡胶:100份
甲阶酚醛树脂:10份
发泡剂:1份
硫化剂:5份
促进剂:3份
硬脂酸:2份;
所述促进剂为硫代氨基甲酰次磺酰胺。
所述发泡剂为碳酸钠。
对比例二:
包括下述重量份组成:
丁腈橡胶:100份
发泡剂:1份
硫化剂:5份
促进剂:3份
硬脂酸:2份;
所述促进剂为硫代氨基甲酰次磺酰胺。
所述发泡剂为碳酸钠。
将实施例和对比例按照原料比例称取,将除发泡剂和硫化剂以为的其他助剂,放入到密炼机中进行密炼,密炼时间为30秒,密炼温度为90℃;
将胶料放置10-15h,然后放在辊距为0.5-1mm的双辊开炼机上进行混炼,混炼温度为50-80℃,混炼均匀后,以均匀片状出片;
将S4中制得的胶料放置在在双辊开炼机上重新预热均匀,然后加入硫化剂和发泡剂充分混合,加入到模具中进行硫化发泡,硫化过程中硫化温度为150℃,压力为10MPa,时间为1小时,得到发泡橡胶。
将上述实施例和对比例得到的发泡橡胶进行测试,测试拉伸强度、断裂伸长率、DIN磨损。
拉伸强度和断裂伸长率测试按照HG/T2580-94进行;
DIN磨损测试按照GB_T252622010进行。
实施例一 | 实施例二 | 对比例一 | 对比例二 | |
拉伸强度/MPa | 26 | 28 | 18 | 11 |
断裂伸长率/% | 450 | 480 | 330 | 300 |
DIN磨损,mm^3 | 0.18 | 0.16 | 0.29 | 0.32 |
在本发明中,以丁腈橡胶为主体,加入改性甲阶酚醛树脂增强,甲阶酚醛树脂是苯酚或取代苯酚同甲醛的反应产物,其特点是能够通过加入发泡剂能够发泡的一种树脂,并且与丁腈橡胶的相容性好,因此本发明选用甲阶酚醛树脂对丁腈橡胶进行改性,同时普通甲阶酚醛树脂虽然一定程度上能够增强丁腈橡胶的力学性能,但是其效果并不理想。因此在本发明的中的改性甲阶酚醛树脂,制备过程中,通过加入氨基苯酚,在整个酚醛树脂的结构上引入氨基,之后加入含氯硅烷,含氯硅烷上的能够脱去-Cl,氨基上也会脱去一个H,含氯硅烷就聚合在氨基上,这样就利用甲阶酚醛树脂与丁腈橡胶相容性好的特定,将硅烷引入到整个丁腈橡胶中,使得丁腈橡胶具有更好的力学性能和耐磨性。
在本发明实施例中可以看出,对比例二为普通丁腈橡胶,在对比例一中加入了甲阶酚醛树脂,可以看到,其力学性能和耐磨性能有了一定的提升,在实施例一和二中,对甲阶酚醛树脂进行改性以后,明显看到力学性能和耐磨性能有了大幅度的提升。
以上所述仅是本发明的优选实施方式,本发明的保护范围并不仅局限于上述实施例,凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理前提下的若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (7)
1.一种发泡耐磨型橡胶,其特征在于:
包括下述重量份组成:
丁腈橡胶:80~100份
改性甲阶酚醛树脂:5~10份
发泡剂:0.5~1份
硫化剂:2~5份
促进剂:2~5份
硬脂酸:1~3份;
所述改性甲阶酚醛树脂由下述摩尔份物质反应而成:
苯酚:20~30份
氨基苯酚:5~10份
甲醛:25~40份
含氯硅烷:5~10份
催化剂:0.1~0.5份。
2.根据权利要求1所述的一种发泡耐磨型橡胶,其特征在于:
所述含氯硅烷为氯甲基三氧基硅烷或氯丙基三乙氧基硅烷。
3.根据权利要求1所述的一种发泡耐磨型橡胶,其特征在于:
所述氨基苯酚为对氨基苯酚或2,5-二氨基苯酚或3,4-二氨基苯酚或2-氨基甲基-4-氨基苯酚或4-(2-氨基乙氧基)苯酚。
4.根据权利要求1所述的一种发泡耐磨型橡胶,其特征在于:
所述催化剂为氢氧化钠或氢氧化钾或三乙胺。
5.根据权利要求1所述的一种发泡耐磨型橡胶,其特征在于:
所述改性甲阶酚醛树脂制备方法为:
步骤一:将苯酚、氨基苯酚、甲醛溶于水中,之后加入催化剂;
步骤二:将溶液升温至70℃,反应时间为3~4小时;
步骤三:冷却至室温,加入盐酸调节pH值至7;
步骤四:加入含氯硅烷,升温至110℃~130℃,反应5~8小时;
步骤五:冷却至室温,通过蒸馏水进行水洗,在真空度为0.05~-0.06MPa条件下,减压蒸馏脱除水分,得到改性甲阶酚醛树脂。
6.根据权利要求1所述的一种发泡耐磨型橡胶,其特征在于:
所述促进剂为硫代氨基甲酰次磺酰胺。
7.根据权利要求1所述的一种发泡耐磨型橡胶,其特征在于:
所述发泡剂为碳酸钠。
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