CN110358180A - 一种可发泡的高硬度橡胶颗粒及其制备方法 - Google Patents
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Abstract
本发明提供了一种可发泡的高硬度橡胶颗粒及其制备方法,橡胶颗粒由橡胶组合物和橡胶助剂两大组分组成,橡胶组合物组分由乙烯‑辛烯共聚物20~40份、VA含量为36~40%的乙烯‑醋酸乙烯共聚物15~30份、塑化橡胶20~50份,聚乙烯5~20份、无机填料1~10份、硬脂酸0.5~3.5份、快熟剂2~4份、流动剂2~4份、耐磨剂5~10份、发泡剂0.5~2.0份、氧化锌2~6份、硬脂酸锌2~4份、交联剂1~4份以及软化剂0~6份组成;塑化橡胶包括以下质量百分数配方组成分:EPDM:100%;增塑剂:30%填料:40%细料:15%促进剂:5%硫化剂:3%颜料:2.5%。本发明制备出的橡胶颗粒在其他物理性能不变的情况下,减轻重量、增加弹性以及硬度。
Description
技术领域
本发明涉及橡胶颗粒,特别涉及一种可发泡的高硬度橡胶颗粒及其制备方法。
背景技术
因再生料的成分复杂致使制品物理性能的不可控,仍然无法满足高端制品的物理指标需求,其缺陷一;传统的橡胶原料、硫化工艺和前发明的橡胶组合物,均不能发泡硫化成型,致使制品的比重高进而制作成本高,制品的弹性受局限,无法满足重量轻、质感柔软、高弹性性能要求,其缺陷二。
目前市场已有EPDM浅色颗粒其SG(比重)均>1.35,众多国内娱乐休闲场所使用颗粒SG(比重)更是超过1.9以上,因其SG(比重)高,故而EPDM浅色颗粒的弹性大大降低,施工铺装好的场地,地质偏硬,弹性舒适度远远达不到预期的理想效果,由于场地硬度高,弹性度不够,故防滑性能也将随之降低,人体在场地上活动时跌倒摔伤的风险增大,而且这种高SG(比重)的EPDM浅色粒施工时每平方米的用量大大增加,无形的增加施工成本。
聚合物软质发泡材料具有轻量化、缓冲、避震、隔热、隔音等优异性能,已广泛应用于鞋材、座垫、密封、阻尼、体育运动器材、家具等领域。EVA、PU、橡胶发泡材料可以应用于上述领域。相比于EVA、PU发泡材料,橡胶发泡材料具有优异的拉伸、撕裂、耐磨、耐温、耐老化性能,因而可用于使用工况复杂苛刻的领域。
高硬度EVA发泡材料存在反弹差、压缩形变大等问题,高硬度PU发泡材料存在耐水解、撕裂性能差、耐老化性能差的问题,很难应用于载荷较大的发泡一体胎领域。橡胶发泡材料的制备方法已经公开,其主要采用化学发泡剂和微球物理发泡剂,化学交联,通过模压发泡的方法制备。通过降低发泡材料膨胀率,无机填料可以提高橡胶发泡制品的硬度。不过,橡胶模压发泡时,需要预先制备混合坯料,然后在模具中边硫化边发泡,为了稳定材料性能,甚至需要二次硫化,因此存在效率低的问题,对于某些结构复杂的制件,坯料制备困难,导致应用领域受到限制;其次,对于轮胎等模压发泡橡胶制品,存在接头,而接头处材料性能差,易导致废品率高的问题。
发明内容
本发明要解决的技术问题是提供一种具有高硬度、高回弹、低比重、重量轻、节省铺设用量、缩减铺装所需成本的一种可发泡的高硬度橡胶颗粒及其制备方法。
为达到上述目的,本发明的技术方案如下:
一种可发泡的高硬度橡胶颗粒,橡胶颗粒由橡胶组合物和橡胶助剂两大组分组成,橡胶组合物组分由乙烯-辛烯共聚物20~40份、VA含量为36~40%的乙烯-醋酸乙烯共聚物15~30份、塑化橡胶20~50份,聚乙烯5~20份、无机填料1~10份、硬脂酸0.5~3.5份、快熟剂2~4份、流动剂2~4份、耐磨剂5~10份、发泡剂0.5~2.0份、氧化锌2~6份、硬脂酸锌2~4份、交联剂1~4份以及软化剂0~6份组成;
塑化橡胶包括以下质量百分数配方组成分:
EPDM:100%
增塑剂:30%
填料:40%
细料:15%
促进剂:5%
硫化剂:3%
颜料:2.5%。
在本发明的一个实施例中,所述补强剂采用炭黑和二氧化硅中的最少一种。
在本发明的一个实施例中,所述的分散剂采用的是脂肪酸聚乙二醇酯。
在本发明的一个实施例中,所述的增塑剂为油。
在本发明的一个实施例中,所述的填料为CACO3、SiO2。
在本发明的一个实施例中,所述的细料为ZnO、PEG、抗氧剂、防老剂、SA、蜡类软化剂。
在本发明的一个实施例中,所述的促进剂为秋兰姆类促进剂、噻唑类促进剂、氨基类促进剂。
在本发明的一个实施例中,所述的硫化剂为S-80。
一种可发泡的高硬度橡胶颗粒制备方法,包括以下步骤:
(1)制作发泡颗粒,所述发泡颗粒包括以下原料:乙烯-辛烯共聚物,VA含量为36~40%的乙烯-醋酸乙烯共聚物,塑化橡胶,聚乙烯,无机填料,硬脂酸,快熟剂,流动剂,耐磨剂,发泡剂,氧化锌,硬脂酸锌,交联剂,软化剂,增塑剂,填料、细料、促进剂、硫化剂以及颜料;
(2)将发泡颗粒在射出机料筒中预热,将熔体注入到模具中成型,其中,模具预抽真空预热预压;
(3)将步骤(2)中成型的材料放入定型烘道,经定型得所述可发泡的高硬度橡胶颗粒。
通过上述技术方案,本发明的有益效果是:
本发明制备出的橡胶颗粒在其他物理性能不变的情况下,减轻重量和增加弹性;且具有高硬度、低比重,节省铺设用量,缩减铺装所需成本。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面进一步阐述本发明。
实施例1
一种可发泡的高硬度橡胶颗粒,橡胶颗粒由橡胶组合物和橡胶助剂两大组分组成,橡胶组合物组分由乙烯-辛烯共聚物20份、VA含量为36%的乙烯-醋酸乙烯共聚物15份、塑化橡胶20份,聚乙烯5份、无机填料1份、硬脂酸0.5份、快熟剂2份、流动剂2份、耐磨剂5份、发泡剂0.5份、氧化锌2份、硬脂酸锌2份、交联剂1份以及软化剂0份组成;
塑化橡胶包括以下质量百分数配方组成分:
EPDM:100%
增塑剂:30%
填料:40%
细料:15%
促进剂:5%
硫化剂:3%
颜料:2.5%。
补强剂采用炭黑和二氧化硅中的最少一种;
分散剂采用的是脂肪酸聚乙二醇酯;增塑剂为油;填料为CACO3、SiO2;细料为ZnO、PEG、抗氧剂、防老剂、SA、蜡类软化剂;促进剂为秋兰姆类促进剂、噻唑类促进剂、氨基类促进剂;硫化剂为S-80。
一种可发泡的高硬度橡胶颗粒制备方法,包括以下步骤:
(1)制作发泡颗粒,所述发泡颗粒包括以下原料:乙烯-辛烯共聚物,VA含量为36%的乙烯-醋酸乙烯共聚物,塑化橡胶,聚乙烯,无机填料,硬脂酸,快熟剂,流动剂,耐磨剂,发泡剂,氧化锌,硬脂酸锌,交联剂,软化剂,增塑剂,填料、细料、促进剂、硫化剂以及颜料;
(2)将发泡颗粒在射出机料筒中预热,将熔体注入到模具中成型,其中,模具预抽真空预热预压;
(3)将步骤(2)中成型的材料放入定型烘道,经定型得所述可发泡的高硬度橡胶颗粒。
实施例2
一种可发泡的高硬度橡胶颗粒,橡胶颗粒由橡胶组合物和橡胶助剂两大组分组成,橡胶组合物组分由乙烯-辛烯共聚物30份、VA含量为38%的乙烯-醋酸乙烯共聚物20份、塑化橡胶35份,聚乙烯10份、无机填料5份、硬脂酸2份、快熟剂3份、流动剂3份、耐磨剂8份、发泡剂1份、氧化锌4份、硬脂酸锌3份、交联剂2份以及软化剂3份组成;
塑化橡胶包括以下质量百分数配方组成分:
EPDM:100%
增塑剂:30%
填料:40%
细料:15%
促进剂:5%
硫化剂:3%
颜料:2.5%。
补强剂采用炭黑和二氧化硅中的最少一种;分散剂采用的是脂肪酸聚乙二醇酯;增塑剂为油;填料为CACO3、SiO2;细料为ZnO、PEG、抗氧剂、防老剂、SA、蜡类软化剂;促进剂为秋兰姆类促进剂、噻唑类促进剂、氨基类促进剂;硫化剂为S-80。
一种可发泡的高硬度橡胶颗粒制备方法,包括以下步骤:
(1)制作发泡颗粒,所述发泡颗粒包括以下原料:乙烯-辛烯共聚物,VA含量为38%的乙烯-醋酸乙烯共聚物,塑化橡胶,聚乙烯,无机填料,硬脂酸,快熟剂,流动剂,耐磨剂,发泡剂,氧化锌,硬脂酸锌,交联剂,软化剂,增塑剂,填料、细料、促进剂、硫化剂以及颜料;
(2)将发泡颗粒在射出机料筒中预热,将熔体注入到模具中成型,其中,模具预抽真空预热预压;
(3)将步骤(2)中成型的材料放入定型烘道,经定型得所述可发泡的高硬度橡胶颗粒。
实施例3
一种可发泡的高硬度橡胶颗粒,橡胶颗粒由橡胶组合物和橡胶助剂两大组分组成,橡胶组合物组分由乙烯-辛烯共聚物40份、VA含量为40%的乙烯-醋酸乙烯共聚物30份、塑化橡胶50份,聚乙烯20份、无机填料10份、硬脂酸3.5份、快熟剂4份、流动剂4份、耐磨剂10份、发泡剂2.0份、氧化锌6份、硬脂酸锌4份、交联剂4份以及软化剂6份组成;
塑化橡胶包括以下质量百分数配方组成分:
EPDM:100%
增塑剂:30%
填料:40%
细料:15%
促进剂:5%
硫化剂:3%
颜料:2.5%。
补强剂采用炭黑和二氧化硅中的最少一种;分散剂采用的是脂肪酸聚乙二醇酯;增塑剂为油;填料为CACO3、SiO2;细料为ZnO、PEG、抗氧剂、防老剂、SA、蜡类软化剂;促进剂为秋兰姆类促进剂、噻唑类促进剂、氨基类促进剂;硫化剂为S-80。
一种可发泡的高硬度橡胶颗粒制备方法,包括以下步骤:
(1)制作发泡颗粒,所述发泡颗粒包括以下原料:乙烯-辛烯共聚物,VA含量为40%的乙烯-醋酸乙烯共聚物,塑化橡胶,聚乙烯,无机填料,硬脂酸,快熟剂,流动剂,耐磨剂,发泡剂,氧化锌,硬脂酸锌,交联剂,软化剂,增塑剂,填料、细料、促进剂、硫化剂以及颜料;
(2)将发泡颗粒在射出机料筒中预热,将熔体注入到模具中成型,其中,模具预抽真空预热预压;
(3)将步骤(2)中成型的材料放入定型烘道,经定型得所述可发泡的高硬度橡胶颗粒。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (9)
1.一种可发泡的高硬度橡胶颗粒,其特征在于,橡胶颗粒由橡胶组合物和橡胶助剂两大组分组成,橡胶组合物组分由乙烯-辛烯共聚物20~40份、VA含量为36~40%的乙烯-醋酸乙烯共聚物15~30份、塑化橡胶20~50份,聚乙烯5~20份、无机填料1~10份、硬脂酸0.5~3.5份、快熟剂2~4份、流动剂2~4份、耐磨剂5~10份、发泡剂0.5~2.0份、氧化锌2~6份、硬脂酸锌2~4份、交联剂1~4份以及软化剂0~6份组成;
塑化橡胶包括以下质量百分数配方组成分:
EPDM:100%
增塑剂:30%
填料:40%
细料:15%
促进剂:5%
硫化剂:3%
颜料:2.5%。
2.根据权利要求1所述的一种可发泡的高硬度橡胶颗粒,其特征在于,所述补强剂采用炭黑和二氧化硅中的最少一种。
3.根据权利要求1所述的一种可发泡的高硬度橡胶颗粒,其特征在于,所述的分散剂采用的是脂肪酸聚乙二醇酯。
4.根据权利要求1所述的一种可发泡的高硬度橡胶颗粒,其特征在于,所述的增塑剂为油。
5.根据权利要求1所述的一种可发泡的高硬度橡胶颗粒,其特征在于,所述的填料为CACO3、SiO2。
6.根据权利要求1所述的一种可发泡的高硬度橡胶颗粒,其特征在于,所述的细料为ZnO、PEG、抗氧剂、防老剂、SA、蜡类软化剂。
7.根据权利要求1所述的一种可发泡的高硬度橡胶颗粒,其特征在于,所述的促进剂为秋兰姆类促进剂、噻唑类促进剂、氨基类促进剂。
8.根据权利要求1所述的一种可发泡的高硬度橡胶颗粒,其特征在于,所述的硫化剂为S-80。
9.一种可发泡的高硬度橡胶颗粒制备方法,其特征在于,包括以下步骤:
(1)制作发泡颗粒,所述发泡颗粒包括以下原料:乙烯-辛烯共聚物,VA含量为36~40%的乙烯-醋酸乙烯共聚物,塑化橡胶,聚乙烯,无机填料,硬脂酸,快熟剂,流动剂,耐磨剂,发泡剂,氧化锌,硬脂酸锌,交联剂,软化剂,增塑剂,填料、细料、促进剂、硫化剂以及颜料;
(2)将发泡颗粒在射出机料筒中预热,将熔体注入到模具中成型,其中,模具预抽真空预热预压;
(3)将步骤(2)中成型的材料放入定型烘道,经定型得所述可发泡的高硬度橡胶颗粒。
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