CN104277316B - 一种防滑eva鞋底及其制备方法 - Google Patents

一种防滑eva鞋底及其制备方法 Download PDF

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CN104277316B
CN104277316B CN201410385132.0A CN201410385132A CN104277316B CN 104277316 B CN104277316 B CN 104277316B CN 201410385132 A CN201410385132 A CN 201410385132A CN 104277316 B CN104277316 B CN 104277316B
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卢鑫
丁思博
罗显发
曾建伟
郭彩莲
林臭知
金校红
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Maotai Fujian New Material Technology Co ltd
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Abstract

本发明属于有机高分子化合物技术领域,特别涉及一种防滑EVA鞋底及其制备方法,由原料EVA、液体橡胶、热可塑性弹性体、增粘剂、氯化聚乙烯、汉麻秆芯超细粉、AC发泡剂、交联剂、纳米氧化锌、硬脂酸锌、硬脂酸、耐磨剂、无机填料经过密炼、开炼、造粒制得防滑EVA料米,防滑EVA料米再经升温发泡、二次油压成型,得到防滑EVA鞋底,所述防滑EVA鞋底具有质轻、高止滑、手感好、尺寸稳定性好等特点,并且具有优良的抗拉强度和抗撕强度,特别适合各类鞋配件、鞋底材料等方面的应用,舒适性好,使用寿命长。

Description

一种防滑EVA鞋底及其制备方法
技术领域
本发明属于有机高分子化合物技术领域,特别涉及一种防滑EVA鞋底及其制备方法。
背景技术
在如今的信息化时代,越来越多的滑倒事故出现在报刊杂志上,解决滑倒事故造成的伤害索赔是一笔不小的费用。同时,滑倒事故严重影响鞋类的品牌形象,越来越多的消费者和生产厂商将注意力集中到增加鞋底止滑性能上。在许多情况下,滑到的原因是鞋底和路面界面之间没有足够的摩擦力,最有效的解决办法是增大鞋底材料与介质的相互作用力,从而增加摩擦力,显著提升鞋底的防滑性能。纵观市场上的EVA鞋底,防滑性能普遍较差,无法满足人们的需求。
为了提升EVA的防滑性能,研究方向都转向橡塑发泡,但是橡塑发泡存在密度偏大、尺寸稳定性差等问题。专利CN 102993545 A将NR、SBR、EVA共混发泡得到质轻防滑高耐磨橡胶材料,密度是0.7g/cm3以上,普通橡塑发泡材料的密度一般在0.5-0.8g/cm3之间。专利CN 101643560 B将EVA、EPDM共混发泡得到的止滑EVA 3D大底,止滑效果很明显,止滑系数干式0.62、湿式0.40,但还是无法满足户外运动鞋的需要。这两篇专利都使用一次射出成型的工艺,一步成型,效率高,但也存在较大的缺点:1,产品稳定性差,经过10米甚至更长的烤箱,产品还会收缩3%或者更大;2,射出机要求料米的粘度合适,橡胶组分越多,材料的粘性越大,射出机很可能无法注射,这限制了橡胶组分的使用量,限制了橡塑发泡的应用范围;3,一步成型工艺表面脱模剂较多,表面光滑,很难生产雾面鞋底。
液体异戊二烯橡胶的分子量较低,表观状态为液体粘性聚合物,玻璃化转变温度Tg是-63度,常温下处以高弹态,可塑性好。液体异戊二烯橡胶分散于材料中分子链中的橡胶段,有很好的弹性,均匀分散于EVA体系中,可以降低分子链之间的作用力,起到增塑作用,同时也是一种反应性增塑剂,不会存在传统增塑剂易挥发、有污染的缺点,而且在一定程度上增塑效果更优,同时降低加工能耗,改善填料分散性,不降低胶料的综合使用性能等,在增塑剂领域有很好的应用前景。
发明内容
为了克服现有专利技术的缺陷,本发明采用液体异戊橡胶作为高分子增塑剂、改性聚乙烯作为增粘剂、氯化聚乙烯改善产品的亮光面,提供了一种具有质轻、高止滑、手感好、尺寸稳定性好的防滑EVA鞋底,并且结合二次MD的成型工艺,优化了材料及助剂的种类和使用量,提供了一种简单,易实现,适合批量化生产的制备前述防滑EVA鞋底的制备工艺。
为实现上述目的,本发明采取的解决方案为:一种防滑EVA鞋底,其特征在于:由以下原料组成制得:EVA、液体橡胶、热可塑性弹性体、增粘剂、氯化聚乙烯、汉麻秆芯超细粉、AC发泡剂、交联剂BIBP、纳米氧化锌、硬脂酸锌、硬脂酸、耐磨剂AG209、无机填料。
进一步的是,各原料的重量份如下:
EVA 50份
液体橡胶 5 - 15份
热可塑性弹性体 5 - 15份
增粘剂 4 - 6份
氯化聚乙烯 2 - 3份
汉麻秆芯超细粉 2 - 3份
AC发泡剂 0.5 - 2份
交联剂BIBP 0.5 - 2份
纳米氧化锌 0.5 - 3份
硬脂酸锌 0.5 – 1.5份
硬脂酸 0.5 – 1.5份
耐磨剂AG209 3 - 8份
无机填料 3 - 10份。
进一步优选的,各组分按下列重量份配置:
EVA 50份
液体橡胶 8 - 10份
热可塑性弹性体 6 - 8份
增粘剂 4.5 - 5份
氯化聚乙烯 2 - 2.5份
汉麻秆芯超细粉 2 - 2.5 份
AC发泡剂 1 - 1.5份
交联剂BIBP 0.8 - 1.3份
纳米氧化锌 1 - 1.5份
硬脂酸锌 0.5 - 0.9份
硬脂酸 0.5 - 0.9份
耐磨剂AG209 2 - 3份
无机填料 6 - 8份。
进一步的是:液体橡胶是液体异戊橡胶。
进一步的是:热可塑性弹性体是泉州三立高分子复合材料有限公司的热可塑性弹性体1175;氯化聚乙烯是淄博济维泽化工有限公司的氯化聚乙烯135B。
进一步的是:增粘剂是至少包括乙烯-丙烯酸乙酯共聚物(EEA)、丙烯酸接枝聚乙烯、马来酸酐接枝聚乙烯中的一种。
一种制备前述防滑EVA鞋底的制备方法,包括步骤:
步骤1:制备防滑EVA料米,所述防滑EVA料米由以下原料制得:EVA、液体橡胶、热可塑性弹性体、增粘剂、氯化聚乙烯、汉麻秆芯超细粉、AC发泡剂、交联剂BIBP、纳米氧化锌、硬脂酸锌、硬脂酸、耐磨剂AG209、无机填料;
步骤2:将防滑EVA料米进行升温发泡、二次油压成型。
进一步的是:在步骤1中,先将除了交联剂BIBP以及AC发泡剂之外的其他原料混合进行密炼,调整密炼温度控制为 90-100℃,保持 4-6min,然后加入交联剂BIBP以及AC发泡剂,继续密炼升温,出料温度为105-115℃,密炼结束后进行开炼、造粒,得到防滑EVA料米。
进一步的是:在步骤2中,将准确称量的防滑EVA料米加入到发泡模具中,经升温发泡,控制温度178-180度,时间280-290秒,然后将发泡鞋底放入油压模具中进行二次油压,温度178-180度,时间350-360秒,再将模具经水冷却340-350秒,打开模具得到防滑EVA鞋底。
因此,通过采用前述技术方案,本发明公开了一种防滑EVA鞋底及其制备方法,采用液体异戊橡胶作为高分子增塑剂,均匀分散于EVA体系中,降低了分子链之间的作用力;采用改性聚乙烯作为增粘剂,增大材料表面极性,可以有效提高鞋底的剥离强度;添加氯化聚乙烯改善了产品的亮光面,保持长期不退雾,增强了产品的美观程度;添加具有多孔径骨架结构的汉麻杆芯超细粉,提高抗湿滑性能,进而能够获得具有质轻、高止滑、手感好、尺寸稳定性好的防滑EVA鞋底,并且结合二次MD的成型工艺,优化了材料及助剂的种类和使用量,解决了现有技术中射出机要求料米的粘度合适,橡胶组分越多,材料的粘性越大,射出机很可能无法注射,这限制了橡胶组分的使用量,限制了橡塑发泡的应用范围的问题,特别适合各类鞋配件、鞋底材料等方面的应用,因此,所述防滑EVA鞋底能够保障穿着者不会因路面湿滑而滑到,而且舒适性好,使用寿命长,有很好的市场前景,制备工艺简单,易实现,适合批量化生产。
具体实施方式
现结合具体实施例对本发明进一步说明。
实施例1:
本实施例中, 防滑EVA鞋底由以下组分按重量份组成:
EVA 5110J 20份、EVA 7470M 30份、液体橡胶10份 、热可塑性弹性体8份、乙烯-丙烯酸乙酯共聚物(EEA) 4.5份、氯化聚乙烯2.5份、汉麻杆芯超细粉2份、AC发泡剂1.2份、交联剂BIBP 1.2份、纳米氧化锌1.5份、硬脂酸锌0.8份、硬脂酸0.8份、耐磨剂AG209 2份、无机填料8份。
先将除了交联剂BIBP以及AC发泡剂之外的其他原料混合进行密炼,调整密炼温度控制为 90-100℃,保持 5 min,然后加入交联剂BIBP以及AC发泡剂,继续密炼升温,出料温度为105-115℃,密炼结束后进行开炼、造粒,得到防滑EVA料米。
将准确称量的防滑EVA料米加入到发泡模具中,经升温发泡,控制温度178-180℃,时间280-290秒,然后将发泡鞋底放入油压模具中进行二次油压,温度178-180℃,时间350-360秒,再将模具经水冷却340-350秒,打开模具得到防滑EVA鞋底。
上述制备得到的防滑EVA鞋底, 密度0.203 g/cm3、邵氏硬度42、回弹率54%、尺寸收缩0.8%、防滑测试后跟干式0.71湿式0.60、平滑干式0.77湿式0.65。
实施例2:
本实施例中,一种防滑EVA鞋底的制备方法与实施例1中的制备方法相同,所不同的是:
液体橡胶5份。
上述制备得到的防滑EVA鞋底, 密度0.233 g/cm3、邵氏硬度49、回弹率52%、尺寸收缩0.6%、防滑测试后跟干式0.52湿式0.46、平滑干式0.59湿式0.49。
实施例3:
本实施例中,一种防滑EVA鞋底的制备方法与实施例1中的制备方法相同,所不同的是:
液体橡胶15份。
上述制备得到的防滑EVA鞋底, 密度0.190 g/cm3、邵氏硬度37、回弹率49%、尺寸收缩3.7%、防滑测试后跟干式0.73湿式0.67、平滑干式0.79湿式0.72。
实施例4:
本实施例中,一种防滑EVA鞋底的制备方法与实施例1中的制备方法相同,所不同的是:
EVA选用EVA 7470M 50份;热可塑性弹性体5份;丙烯酸接枝聚乙烯6份;无机填料10份。
上述制备得到的防滑EVA鞋底, 密度0.207 g/cm3、邵氏硬度41、回弹率54%、尺寸收缩1.0%、防滑测试后跟干式0.62湿式0.53、平滑干式0.64湿式0.59。
实施例5:
本实施例中,一种防滑EVA鞋底的制备方法与实施例1中的制备方法相同,所不同的是:
EVA选用EVA E180F 50份;热可塑性弹性体15份;耐磨剂AG209 8份。
上述制备得到的防滑EVA鞋底, 密度0.207 g/cm3、邵氏硬度44、回弹率58%、尺寸收缩1.0%、防滑测试后跟干式0.59湿式0.40、平滑干式0.57湿式0.41。
将上述实施例1 ~ 5 的数据整理后,得到如下表1(注:邵氏硬度A按照ISO7619:1997测试,尺寸收缩按照ISO 20873:2001测试,回弹率测试采用GT-7042-RE型冲击弹性试验机,止滑系数按照TM144:2011测试):
实施例 1 2 3 4 5
密度 (g/cm3) 0.203 0.233 0.190 0.207 0.207
邵氏硬度 42 49 37 41 44
尺寸收缩 (%) 0.8 0.6 3.7 1.1 1.0
回弹率% 54 52 49 54 58
干式止滑系数(后跟) 0.71 0.52 0.73 0.62 0.59
湿式止滑系数(后跟) 0.60 0.46 0.67 0.53 0.40
干式止滑系数(平滑) 0.77 0.59 0.79 0.64 0.57
湿式止滑系数(平滑) 0.65 0.49 0.72 0. 59 0.41
表1 :实施例1~5制备的防滑EVA鞋底的性能参数对照表。
综上所述,按照本发明的防滑EVA鞋底的制备方法,能够制得质轻、高止滑、手感好、尺寸稳定性好的EVA鞋底,并且具有优良的抗拉强度和抗撕强度,特别适合各类鞋配件、鞋底材料等方面的应用,保障穿着者不会因路面湿滑而滑到,而且舒适性好,使用寿命长,有很好的市场前景
以上所记载,仅为利用本创作技术内容的实施例,任何熟悉本项技艺者运用本创作所做的修饰、变化,皆属本创作主张的专利范围,而不限于实施例所揭示者。

Claims (7)

1.一种防滑EVA鞋底,其特征在于:由以下原料组成制得:EVA、液体橡胶、热可塑性弹性体、增粘剂、氯化聚乙烯、汉麻秆芯超细粉、AC发泡剂、交联剂BIBP、纳米氧化锌、硬脂酸锌、硬脂酸、耐磨剂AG209、无机填料;各原料的重量份如下:
EVA 50份
液体橡胶 5 - 15份
热可塑性弹性体 5 - 15份
增粘剂 4 - 6份
氯化聚乙烯 2 - 3份
汉麻秆芯超细粉 2 - 3份
AC发泡剂 0.5 - 2份
交联剂BIBP 0.5 - 2份
纳米氧化锌 0.5 - 3份
硬脂酸锌 0.5 – 1.5份
硬脂酸 0.5 – 1.5份
耐磨剂AG209 2 - 8份
无机填料 3 - 10份。
2.根据权利要求1所述防滑EVA鞋底,其特征在于:液体橡胶是液体异戊橡胶。
3.根据权利要求1所述防滑EVA鞋底,其特征在于:热可塑性弹性体是泉州三立高分子复合材料有限公司的热可塑性弹性体1175;氯化聚乙烯是淄博济维泽化工有限公司的氯化聚乙烯135B。
4.根据权利要求1所述防滑EVA鞋底,其特征在于:增粘剂是至少包括乙烯-丙烯酸乙酯共聚物(EEA)、丙烯酸接枝聚乙烯、马来酸酐接枝聚乙烯中的一种。
5.一种制备权利要求1-4任一所述防滑鞋底的制备方法,其特征在于:包括步骤:
步骤1:制备防滑EVA料米,所述防滑EVA料米由以下原料制得:EVA、液体橡胶、热可塑性弹性体、增粘剂、氯化聚乙烯、汉麻秆芯超细粉、AC发泡剂、交联剂BIBP、纳米氧化锌、硬脂酸锌、硬脂酸、耐磨剂AG209、无机填料;
步骤2:将防滑EVA料米进行升温发泡、二次油压成型。
6.根据权利要求5所述的制备方法,其特征在于:在步骤1中,先将除了交联剂BIBP以及AC发泡剂之外的其他原料混合进行密炼,调整密炼温度控制为 90-100℃,保持 4-6min,然后加入交联剂BIBP以及AC发泡剂,继续密炼升温,出料温度为105-115℃,密炼结束后进行开炼、造粒,得到防滑EVA料米。
7.根据权利要求5所述的制备方法,其特征在于:在步骤2中,将准确称量的防滑EVA料米加入到发泡模具中,经升温发泡,控制温度178-180度,时间280-290秒,然后将发泡鞋底放入油压模具中进行二次油压,温度178-180度,时间350-360秒,再将模具经水冷却340-350秒,打开模具得到防滑EVA鞋底。
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