CN114571763A - 一种利用废旧轮胎制备免充气轮胎的方法 - Google Patents
一种利用废旧轮胎制备免充气轮胎的方法 Download PDFInfo
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Abstract
本发明提供了一种利用废旧轮胎制备免充气轮胎的方法,包括以下步骤:废旧轮胎回收、粗胶粉预处理、免充气轮胎的制备。本发明提供的制备免充气轮胎可利用废旧轮胎制得,通过将废旧轮胎预处理,得到含有短纤维的粗胶粉,并利用改粗胶粉制备免充气轮胎,工艺绿色环保,产品质量好。
Description
技术领域
本发明属于材料领域,特别涉及一种利用废旧轮胎制备免充气轮胎的方法。
背景技术
轮胎是橡胶制品主要应用产品之一,世界上橡胶消耗量的一半用于轮胎制造,而应用于轮胎的橡胶材料的开发需要很强的理论支持与创新。实心轮胎虽不是轮胎中的主流产品,但因其良好的载重能力与安全性广泛应用于矿物开采、工程建设和货物运输等重要领域。在实际应用中,尽管实心橡胶轮胎有着诸多优点,但胎体材料性能不佳、结构过于简单仍限制着其进一步推广应用。
实心轮胎的胎体材料选择,是轮胎制造的关键,橡胶材料作为一种具有高弹性、受力变形可回复的材料,应用在轮胎制造方面己有多年的历史,目前主流的实心轮胎依然选择橡胶作为胎体材料。
近年来,聚氨酯作为一种新兴材料也彼用于轮胎制造中,聚氨醋弹性体同样具有弹性,并且在一定程度上强度与耐磨性都优于橡胶,这是其作为轮胎材料的应用基础。同时,聚氨醋材料在动态使用条件下具有更低的损耗因子,作为轮胎材料可提供轮胎更低的滚动阻力,在节约能耗方面也有很大优势。从上世纪七十年代开始,国外部分轮胎公司开始将聚氨醋材料应用于轮胎上,而最早使用聚気酷制备实心轮胎的是美国固特异轮胎公司,其后引来其他公司的纷纷效仿,但近些年仍未得到更好的开发与应用。
聚氨酯轮胎在实际使用过程中有两个致命缺陷,其一是其耐热性不佳,尽管也有耐热聚氨酯材料的研发,但适合于轮胎应用的聚氨酯材料使用温度上限为80-90℃,超过这个限制温度,聚氨酯材料的强度、耐疲劳性严重下降,而对于重载型的实心轮胎,其实际使用时会达到很髙的温度:其二是聚氨酯材料与地面的附着性相比于橡胶要弱,这使得聚氨酯轮胎的牵引性与抗湿滑性较差,同样限制了其使用。
发明内容
技术问题:为了解决现有技术的缺陷,本发明的目的在于提供一种利用废旧轮胎制备免充气轮胎的方法。
技术方案:本发明提供了一种利用废旧轮胎制备免充气轮胎的方法,包括以下步骤:
(1)废旧轮胎回收:将内含的废旧轮胎清洗干净,将清洗后的橡胶在粉碎机中粉碎至20~30mm的粗颗粒,粗颗粒经过第一次磁选得含铁杂质和粗橡胶颗粒;将粗橡胶颗粒经研磨机研磨至5~10mm,经过第二次磁选去除含铁杂质,经砂轮机继续研磨至0.5~1.4mm,经过滤筛筛分,即得含短纤维的粗胶粉;
(2)粗胶粉预处理:在低温无氧环境条件下,以溶胀溶剂作为介质、硫醇类硫化物为脱硫剂对含短纤维的粗胶粉在140-200℃、8-18Mpa进行脱硫再生处理1-6h,脱硫剂用量8-15%;
(3)免充气轮胎的制备:
(3.1)将端羟烷基硅油与乙烯基聚醚在溶剂存在下搅拌均匀,升温至55-65℃,在催化剂存在下,搅拌反应1-3h;将反应体系继续升温至70-80℃,再加入二异氰酸酯、多元醇、二羟甲基丙酸扩链剂和三乙胺中和剂,继续搅拌反应2-6h;恒温条件下,滴加封端剂,继续反应3-5h,即得改性聚氨酯;
(3.2)取预处理后的粗胶粉、改性聚氨酯、芳纶纤维、防老剂、去离子水、一半质量的硫磺、芳烃油、氧化锌、硬脂酸置于密炼机中,在转速为60~100r/min下混炼30~50s后,加入炭黑、防老剂、硅烷偶联剂KH-560和促进剂NS,在转速为80~120r/min下混炼30~50s,将反应物进行排胶处理,冷却至室温,即得混炼胶,在混炼胶中加入余下的硫磺混炼均匀,进行硫化处理,冷却至室温,成型,即得免充气轮胎。
步骤(2)中,所述溶胀溶剂为超临界二氧化碳、超临界乙醇;所述硫醇类硫化物为二硫代苏糖醇、二苯二硫醚或正己烷硫醇。
步骤(3.1)中,所述二异氰酸酯为2,4-甲苯二异氰酸酯、异佛尔酮二异氰酸酯或己二异氰酸酯。
步骤(3.1)中,所述的多元醇为分子量600-1000的聚酯二元醇或分子量为400-2000的聚丙二醇。
步骤(3.1)中,所述的催化剂为二月桂酸二丁基锡或锌酸亚锡;所述溶剂为丁酮、N,N-二甲基甲酰胺、甲苯和/或N-甲基吡咯烷酮。
步骤(3.1)中,所述的端羟烷基硅油为端羟甲基硅油、端羟乙基硅油、端羟丙基硅油、端羟丁基硅油。
步骤(3.2)中,各原料的用量为:含短纤维的粗胶粉100份、丁苯橡胶30-40份、改性聚氨酯20-30份、炭黑80-120份、芳纶纤维5-15份、防老剂5-10份、硫磺3-6份、芳烃油10-30份、氧化锌1-3份、硬脂酸1-3份、硅烷偶联剂KH-560 5-10份、促进剂NS 4-8份。
步骤(3.2)中,各原料的用量为:含短纤维的粗胶粉100份、丁苯橡胶35份、改性聚氨酯25份、炭黑100份、芳纶纤维10份、防老剂7.5份、硫磺4.5份、芳烃油20份、氧化锌2份、硬脂酸2份、硅烷偶联剂KH-560 7.5份、促进剂NS 6份。
有益效果:本发明提供的制备免充气轮胎可利用废旧轮胎制得,通过将废旧轮胎预处理,得到含有短纤维的粗胶粉,并利用改粗胶粉制备免充气轮胎,工艺绿色环保,产品质量好。
具体实施方式
下面给出实施例,结合具体实施方式对本发明进行进一步的详细描述。以下实施例仅为阐述本发明,而非限制本发明的范围。
以下实施例中的实验方法,除有特殊说明者外,均为常规实验方法。实施例中所采用的原料、实验试剂等,除有特殊说明者外,均为购买获得的市售产品。
实施例1
利用废旧轮胎制备免充气轮胎的方法,包括以下步骤:
(1)废旧轮胎回收:将内含的废旧轮胎清洗干净,将清洗后的橡胶在粉碎机中粉碎至20~30mm的粗颗粒,粗颗粒经过第一次磁选得含铁杂质和粗橡胶颗粒;将粗橡胶颗粒经研磨机研磨至5~10mm,经过第二次磁选去除含铁杂质,经砂轮机继续研磨至0.5~1.4mm,经过滤筛筛分,即得含短纤维的粗胶粉;
(2)粗胶粉预处理:在低温无氧环境条件下,以溶胀溶剂作为介质、硫醇类硫化物为脱硫剂对含短纤维的粗胶粉在160℃、12Mpa进行脱硫再生处理3h,脱硫剂用量7%;
所述溶胀溶剂为超临界二氧化碳;所述硫醇类硫化物为二硫代苏糖醇;
(3)免充气轮胎的制备:
(3.1)将端羟烷基硅油与乙烯基聚醚在溶剂存在下搅拌均匀,升温至60℃,在催化剂存在下,搅拌反应2h;将反应体系继续升温至75℃,再加入二异氰酸酯、多元醇、二羟甲基丙酸扩链剂和三乙胺中和剂,继续搅拌反应4h;恒温条件下,滴加封端剂,继续反应4h,即得改性聚氨酯;
所述二异氰酸酯为2,4-甲苯二异氰酸酯;所述的多元醇为分子量600-1000的聚酯二元醇;所述的催化剂为二月桂酸二丁基锡;所述溶剂为N,N-二甲基甲酰胺;所述的端羟烷基硅油为端羟甲基硅油。
(3.2)取预处理后的粗胶粉、改性聚氨酯、芳纶纤维、防老剂、去离子水、一半质量的硫磺、芳烃油、氧化锌、硬脂酸置于密炼机中,在转速为80r/min下混炼40s后,加入炭黑、防老剂、硅烷偶联剂KH-560和促进剂NS,在转速为100r/min下混炼40s,将反应物进行排胶处理,冷却至室温,即得混炼胶,在混炼胶中加入余下的硫磺混炼均匀,进行硫化处理,冷却至室温,成型,即得免充气轮胎。
各原料的用量为:含短纤维的粗胶粉100份、丁苯橡胶35份、改性聚氨酯25份、炭黑100份、芳纶纤维10份、防老剂7.5份、硫磺4.5份、芳烃油20份、氧化锌2份、硬脂酸2份、硅烷偶联剂KH-560 7.5份、促进剂NS 6份。
实施例2
利用废旧轮胎制备免充气轮胎的方法,包括以下步骤:
(1)废旧轮胎回收:将内含的废旧轮胎清洗干净,将清洗后的橡胶在粉碎机中粉碎至20~30mm的粗颗粒,粗颗粒经过第一次磁选得含铁杂质和粗橡胶颗粒;将粗橡胶颗粒经研磨机研磨至5~10mm,经过第二次磁选去除含铁杂质,经砂轮机继续研磨至0.5~1.4mm,经过滤筛筛分,即得含短纤维的粗胶粉;
(2)粗胶粉预处理:在低温无氧环境条件下,以溶胀溶剂作为介质、硫醇类硫化物为脱硫剂对含短纤维的粗胶粉在140℃、18Mpa进行脱硫再生处理6h,脱硫剂用量15%;
所述溶胀溶剂为超临界乙醇;所述硫醇类硫化物为二苯二硫醚;
(3)免充气轮胎的制备:
(3.1)将端羟烷基硅油与乙烯基聚醚在溶剂存在下搅拌均匀,升温至55℃,在催化剂存在下,搅拌反应3h;将反应体系继续升温至80℃,再加入二异氰酸酯、多元醇、二羟甲基丙酸扩链剂和三乙胺中和剂,继续搅拌反应2h;恒温条件下,滴加封端剂,继续反应3-5h,即得改性聚氨酯;
所述二异氰酸酯为异佛尔酮二异氰酸酯;所述的多元醇为分子量600-1000的聚酯二元醇;所述的催化剂为二月桂酸二丁基锡;所述溶剂为N-甲基吡咯烷酮;所述的端羟烷基硅油为端羟乙基硅油。
(3.2)取预处理后的粗胶粉、改性聚氨酯、芳纶纤维、防老剂、去离子水、一半质量的硫磺、芳烃油、氧化锌、硬脂酸置于密炼机中,在转速为100r/min下混炼30s后,加入炭黑、防老剂、硅烷偶联剂KH-560和促进剂NS,在转速为80r/min下混炼50s,将反应物进行排胶处理,冷却至室温,即得混炼胶,在混炼胶中加入余下的硫磺混炼均匀,进行硫化处理,冷却至室温,成型,即得免充气轮胎。
各原料的用量为:含短纤维的粗胶粉100份、丁苯橡胶30份、改性聚氨酯30份、炭黑80份、芳纶纤维15份、防老剂5份、硫磺6份、芳烃油10份、氧化锌3份、硬脂酸1份、硅烷偶联剂KH-560 5份、促进剂NS 4份。
实施例3
利用废旧轮胎制备免充气轮胎的方法,包括以下步骤:
(1)废旧轮胎回收:将内含的废旧轮胎清洗干净,将清洗后的橡胶在粉碎机中粉碎至20~30mm的粗颗粒,粗颗粒经过第一次磁选得含铁杂质和粗橡胶颗粒;将粗橡胶颗粒经研磨机研磨至5~10mm,经过第二次磁选去除含铁杂质,经砂轮机继续研磨至0.5~1.4mm,经过滤筛筛分,即得含短纤维的粗胶粉;
(2)粗胶粉预处理:在低温无氧环境条件下,以溶胀溶剂作为介质、硫醇类硫化物为脱硫剂对含短纤维的粗胶粉在200℃、8Mpa进行脱硫再生处理1h,脱硫剂用量8%;
所述溶胀溶剂为超临界二氧化碳;所述硫醇类硫化物为正己烷硫醇;
(3)免充气轮胎的制备:
(3.1)将端羟烷基硅油与乙烯基聚醚在溶剂存在下搅拌均匀,升温至65℃,在催化剂存在下,搅拌反应1h;将反应体系继续升温至70℃,再加入二异氰酸酯、多元醇、二羟甲基丙酸扩链剂和三乙胺中和剂,继续搅拌反应6h;恒温条件下,滴加封端剂,继续反应3-5h,即得改性聚氨酯;
所述二异氰酸酯为己二异氰酸酯;所述的多元醇为分子量600-1000的聚酯二元醇;所述的催化剂为锌酸亚锡;所述溶剂为甲苯;所述的端羟烷基硅油为端羟丁基硅油。
(3.2)取预处理后的粗胶粉、改性聚氨酯、芳纶纤维、防老剂、去离子水、一半质量的硫磺、芳烃油、氧化锌、硬脂酸置于密炼机中,在转速为60r/min下混炼50s后,加入炭黑、防老剂、硅烷偶联剂KH-560和促进剂NS,在转速为120r/min下混炼30s,将反应物进行排胶处理,冷却至室温,即得混炼胶,在混炼胶中加入余下的硫磺混炼均匀,进行硫化处理,冷却至室温,成型,即得免充气轮胎。
各原料的用量为:含短纤维的粗胶粉100份、丁苯橡胶40份、改性聚氨酯20份、炭黑120份、芳纶纤维5份、防老剂10份、硫磺3份、芳烃油30份、氧化锌1份、硬脂酸3份、硅烷偶联剂KH-560 10份、促进剂NS 8份。
对比例1
利用废旧轮胎制备免充气轮胎的方法,包括以下步骤:
(1)废旧轮胎回收:将内含的废旧轮胎清洗干净,将清洗后的橡胶在粉碎机中粉碎至20~30mm的粗颗粒,粗颗粒经过第一次磁选得含铁杂质和粗橡胶颗粒;将粗橡胶颗粒经研磨机研磨至5~10mm,经过第二次磁选去除含铁杂质,经砂轮机继续研磨至0.5~1.4mm,经过滤筛筛分,即得含短纤维的粗胶粉;
(2)粗胶粉预处理:在低温无氧环境条件下,以溶胀溶剂作为介质、硫醇类硫化物为脱硫剂对含短纤维的粗胶粉在160℃、12Mpa进行脱硫再生处理3h,脱硫剂用量7%;
所述溶胀溶剂为超临界二氧化碳;所述硫醇类硫化物为二硫代苏糖醇;
(3)免充气轮胎的制备:
取预处理后的粗胶粉、聚氨酯、芳纶纤维、防老剂、去离子水、一半质量的硫磺、芳烃油、氧化锌、硬脂酸置于密炼机中,在转速为80r/min下混炼40s后,加入炭黑、防老剂、硅烷偶联剂KH-560和促进剂NS,在转速为100r/min下混炼40s,将反应物进行排胶处理,冷却至室温,即得混炼胶,在混炼胶中加入余下的硫磺混炼均匀,进行硫化处理,冷却至室温,成型,即得免充气轮胎。
各原料的用量为:含短纤维的粗胶粉100份、丁苯橡胶35份、聚氨酯25份、炭黑100份、芳纶纤维10份、防老剂7.5份、硫磺4.5份、芳烃油20份、氧化锌2份、硬脂酸2份、硅烷偶联剂KH-560 7.5份、促进剂NS 6份。
测试实施例1至3以及对比例1的产品性能。
显而易见,对于本领域一般技术人员而言,以上对本发明具体实施方式的描述并不限制本发明的应用,可以根据实际情况进行各种等同替换或变形。只要不脱离本发明的精神,所有这些替换或变形均应属于本发明所附的权利要求的保护范围。
Claims (8)
1.一种利用废旧轮胎制备免充气轮胎的方法,其特征在于:包括以下步骤:
(1)废旧轮胎回收:将内含的废旧轮胎清洗干净,将清洗后的橡胶在粉碎机中粉碎至20~30mm的粗颗粒,粗颗粒经过第一次磁选得含铁杂质和粗橡胶颗粒;将粗橡胶颗粒经研磨机研磨至5~10mm,经过第二次磁选去除含铁杂质,经砂轮机继续研磨至0.5~1.4mm,经过滤筛筛分,即得含短纤维的粗胶粉;
(2)粗胶粉预处理:在低温无氧环境条件下,以溶胀溶剂作为介质、硫醇类硫化物为脱硫剂对含短纤维的粗胶粉在140-200℃、8-18Mpa进行脱硫再生处理1-6h,脱硫剂用量8-15%;
(3)免充气轮胎的制备:
(3.1)将端羟烷基硅油与乙烯基聚醚在溶剂存在下搅拌均匀,升温至55-65℃,在催化剂存在下,搅拌反应1-3h;将反应体系继续升温至70-80℃,再加入二异氰酸酯、多元醇、二羟甲基丙酸扩链剂和三乙胺中和剂,继续搅拌反应2-6h;恒温条件下,滴加封端剂,继续反应3-5h,即得改性聚氨酯;
(3.2)取预处理后的粗胶粉、改性聚氨酯、芳纶纤维、防老剂、去离子水、一半质量的硫磺、芳烃油、氧化锌、硬脂酸置于密炼机中,在转速为60~100r/min下混炼30~50s后,加入炭黑、防老剂、硅烷偶联剂KH-560和促进剂NS,在转速为80~120r/min下混炼30~50s,将反应物进行排胶处理,冷却至室温,即得混炼胶,在混炼胶中加入余下的硫磺混炼均匀,进行硫化处理,冷却至室温,成型,即得免充气轮胎。
2.根据权利要求1所述的一种利用废旧轮胎制备免充气轮胎的方法,其特征在于:步骤(2)中,所述溶胀溶剂为超临界二氧化碳、超临界乙醇;所述硫醇类硫化物为二硫代苏糖醇、二苯二硫醚或正己烷硫醇。
3.根据权利要求1所述的一种利用废旧轮胎制备免充气轮胎的方法,其特征在于:步骤(3.1)中,所述二异氰酸酯为2,4-甲苯二异氰酸酯、异佛尔酮二异氰酸酯或己二异氰酸酯。
4.根据权利要求1所述的一种利用废旧轮胎制备免充气轮胎的方法,其特征在于:步骤(3.1)中,所述的多元醇为分子量600-1000的聚酯二元醇或分子量为400-2000的聚丙二醇。
5.根据权利要求1所述的一种利用废旧轮胎制备免充气轮胎的方法,其特征在于:步骤(3.1)中,所述的催化剂为二月桂酸二丁基锡或锌酸亚锡;所述溶剂为丁酮、N,N-二甲基甲酰胺、甲苯和/或N-甲基吡咯烷酮。
6.根据权利要求1所述的一种利用废旧轮胎制备免充气轮胎的方法,其特征在于:步骤(3.1)中,所述的端羟烷基硅油为端羟甲基硅油、端羟乙基硅油、端羟丙基硅油、端羟丁基硅油。
7.根据权利要求1所述的一种利用废旧轮胎制备免充气轮胎的方法,其特征在于:步骤(3.2)中,各原料的用量为:含短纤维的粗胶粉100份、丁苯橡胶30-40份、改性聚氨酯20-30份、炭黑80-120份、芳纶纤维5-15份、防老剂5-10份、硫磺3-6份、芳烃油10-30份、氧化锌1-3份、硬脂酸1-3份、硅烷偶联剂KH-560 5-10份、促进剂NS 4-8份。
8.根据权利要求1所述的一种利用废旧轮胎制备免充气轮胎的方法,其特征在于:步骤(3.2)中,各原料的用量为:含短纤维的粗胶粉100份、丁苯橡胶35份、改性聚氨酯25份、炭黑100份、芳纶纤维10份、防老剂7.5份、硫磺4.5份、芳烃油20份、氧化锌2份、硬脂酸2份、硅烷偶联剂KH-560 7.5份、促进剂NS 6份。
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CN116444224B (zh) * | 2023-03-15 | 2023-09-26 | 广东清爽节能材料有限公司 | 一种丙烯酸橡胶隔声保温浆料及其制备方法、应用 |
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