CN108586910A - 一种滑板鞋鞋底及其制作工艺 - Google Patents
一种滑板鞋鞋底及其制作工艺 Download PDFInfo
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Abstract
一种滑板鞋鞋底,其原料按照重量份数包含以下物质:乙烯‑醋酸乙烯酯共聚物45‑65份,部分氢化苯乙烯‑丁二烯共聚物20‑40份,星型支化溴化丁基橡胶10‑20份,氢化苯乙烯‑丁二烯共聚物接枝马来酸酐2‑8份,纳米二氧化硅5‑15份,纳米滑石粉5‑15份,填料表面处理剂2‑8份,降温活化剂1‑3份,硬脂酸0.2‑0.8份,硬脂酸锌0.5‑1.1份,交联剂0.2‑0.8份,发泡剂0.5‑1.5份。该材料经注射发泡成型后,可以赋予鞋底良好的止滑、耐磨、轻便和柔韧等性能,且可采用注射发泡工艺进行成型,工艺简单,利于大规模生产。
Description
技术领域
本发明涉及新型发泡材料鞋底制作领域,尤指一种滑板鞋鞋底及其制作工艺。
背景技术
滑板运动是一种时尚运动,深受广大青少年的喜爱,为满足滑板运动的需要,需要保障滑板鞋鞋底的止滑和耐磨性能,传统的滑板鞋鞋底材质一般采用密度较高的硬质橡胶,但是滑板鞋鞋底整体较厚,且其边墙高,因此密度较高的硬质橡胶的使用会使得鞋底整体较重、较硬,从而影响穿着的舒适性,也影响在滑板运动中的灵活性。近年来,随着滑板运动等休闲运动的兴起,传统的硬质橡胶滑板鞋鞋底已不能满足人们的需求,在满足鞋底止滑和耐磨性能的基础上,轻便和柔韧也成为滑板鞋鞋底的重要性能;因此,有些工厂将普通塑胶发泡材料用于制作滑板鞋底,但普通塑料发泡材料虽然轻便柔软,但是其止滑和耐磨性能较差,在使用过程中可能带来安全隐患,引起危险,不能满足滑板鞋底的实际要求。
发明内容
本发明的目的旨在提供一种密度较低、耐磨性能较好的轻便型滑板鞋鞋底及其制作工艺
具体方案如下:一种滑板鞋鞋底,其原料按照重量份数包含以下物质:乙烯-醋酸乙烯酯共聚物45-65份,部分氢化苯乙烯-丁二烯共聚物20-40份,星型支化溴化丁基橡胶10-20份,氢化苯乙烯-丁二烯共聚物接枝马来酸酐2-8份。
进一步的,按照重量分数的还包括以下物质:纳米二氧化硅5-15份,纳米滑石粉5-15份,填料表面处理剂2-8份,降温活化剂1-3份,硬脂酸0.2-0.8份,硬脂酸锌0.5-1.1份,交联剂0.2-0.8份,发泡剂0.5-1.5份。
进一步的,所述填料表面处理剂为硅烷偶联剂。
进一步的,所述降温活化剂为纳米氧化锌。
进一步的,所述交联剂为过氧化二异丙苯。
进一步的,所述发泡剂为偶氮二甲酰胺发泡剂。
进一步的,所述乙烯-醋酸乙烯酯共聚物中醋酸乙烯酯重量含量为30%-40%。
进一步的,所述的部分氢化苯乙烯-丁二烯共聚物为日本旭化成公司生产的TUFTECTM P。
进一步的,以上所述一种滑板鞋鞋底的制作工艺,包括以下步骤:
第一步:将上述的乙烯-醋酸乙烯酯共聚物、部分氢化苯乙烯-丁二烯共聚物、星型支化溴化丁基橡胶、氢化苯乙烯-丁二烯共聚物接枝马来酸酐、纳米二氧化硅、纳米滑石粉、硅烷偶联剂、纳米氧化锌、硬脂酸、硬脂酸锌按配方比例投入密炼机混炼6-8分钟,温度升至95℃-100℃后加入过氧化二异丙苯交联剂和偶氮二甲酰胺发泡剂,继续混炼1-2分钟,温度升至105℃-115℃后,出料并投入开炼机,先翻厚一次,厚度3-5mm,再束薄二次,每次厚度1-2mm,再翻厚一次,厚度3-5mm,再投入双螺杆挤出机造粒,造好的粒料室温静置24小时以上;
第二步:将静置好的粒料放入干燥桶内干燥2小时,干燥温度45-55℃;
第三步:将第二步所得的干燥后的粒料由注射机进行注射发泡成型,注射温度80-90℃,模具温度170-180度,硫化时间250-400秒;
第四步:将第三步发泡成型后的模具置于定型烘箱中进行定型,定型温度50-90℃,定型时间25-35分钟;冷却后取下模具,得到所需滑板鞋鞋底。
本发明专利具有以下技术优点:
(1)高VA含量的EVA具有良好的回弹性、柔韧性、黏合性等特点,其在配方中可以赋予鞋底良好的回弹性、可粘结性、低密度等性能,而且,高VA含量使得EVA与SBIIR具有更好的相容性,有助于材料在混炼过程均匀混合,形成均匀的共硫化体系。
(2)星型支化溴化丁基橡胶SBIIR包含高分子量的“星型”支化片段和稍低分子量的线性组分,其中高分子量部分可以形成较高的生胶强度,并且不会对应力松弛产生不良影响,低分子量部分产生更快的应力松弛,因此,与传统的溴化丁基橡胶相比,星型支化溴化丁基橡胶提供了增强的加工性能(如混炼、压延、挤出、脱模),并为成型等操作流程提供更好的生胶强度,此外,SBIIR与高VA含量EVA的相容性好,且可与EVA进行共硫化,形成均匀的共硫化体系,从而赋予鞋底良好的止滑、耐磨等橡胶特性。
(3)部分氢化苯乙烯-丁二烯共聚物(SBBR)具有良好的弹性和柔韧性,可以很好地弥补配方中EVA、SBIIR材料弹性和柔韧性不足的问题。同时,还可赋予鞋底较低的永久压缩形变和低密度的特点。此外,考虑到SBBR分子链上不含极性基团,本发明在配方中添加少量氢化苯乙烯-丁二烯共聚物(SEBS)接枝马来酸酐(即SEBS-g-MAH)作为相容剂,改善SBBR与配方中EVA、SBIIR的相容性,从而使得SBBR也能够更加均匀地参与配方体系的共硫化过程,充分发挥SBBR材料的特性。
(4)上述三种胶料在配方可以产生较好的协同效应,材料经注射发泡成型后,可以赋予鞋底良好的止滑、耐磨、轻便和柔韧等性能。
(5)本发明材料可采用注射发泡工艺进行成型,工艺简单,利于大规模生产。
具体实施方式
实施例一:
一种滑板鞋鞋底,其原料按照重量份数具体如下:乙烯-醋酸乙烯酯共聚物(醋酸乙烯酯重量含量为30%)55份,部分氢化苯乙烯-丁二烯共聚物(SBBS,日本旭化成TUFTECTMP)30份,星型支化溴化丁基橡胶(SBIIR,埃克森美孚化工ExxonTM)15份,氢化苯乙烯-丁二烯共聚物接枝马来酸酐5份,纳米二氧化硅10份,纳米滑石粉10份,硅烷偶联剂5份,纳米氧化锌2份,硬脂酸0.5份,硬脂酸锌0.8份,过氧化二异丙苯交联剂0.5份,偶氮二甲酰胺发泡剂1份;
将上所述一种滑板鞋鞋底的原料按照以下的制作工艺进行制作,具体包括以下步骤:
第一步:将以上原料中的乙烯-醋酸乙烯酯共聚物、部分氢化苯乙烯-丁二烯共聚物、星型支化溴化丁基橡胶、氢化苯乙烯-丁二烯共聚物接枝马来酸酐、纳米二氧化硅、纳米滑石粉、硅烷偶联剂、纳米氧化锌、硬脂酸、硬脂酸锌投入密炼机混炼8分钟,温度升至100℃后加入过氧化二异丙苯交联剂和偶氮二甲酰胺发泡剂,继续混炼1-2分钟,温度升至115℃后,出料并投入开炼机,先翻厚一次,厚度3-5mm,再束薄二次,每次厚度1-2mm,再翻厚一次,厚度3-5mm,再投入双螺杆挤出机造粒,造好的粒料室温静置24小时以上;
第二步:将静置好的粒料放入干燥桶内干燥2小时,干燥温度45-55℃;
第三步:将第二步干燥后的粒料由注射机进行注射发泡成型,注射温度85℃,模具温度170-180度,硫化时间350秒;
第四步:将第三步发泡成型后的模具置于定型烘箱中进行定型,定型温度80℃,定型时间30分钟;冷却后取下模具,得到实施例一的滑板鞋鞋底。
实施例二:
一种滑板鞋鞋底,其原料按照重量份数具体如下:乙烯-醋酸乙烯酯共聚物(醋酸乙烯酯重量含量为35%)45份,部分氢化苯乙烯-丁二烯共聚物(SBBS,日本旭化成TUFTECTMP)20份,星型支化溴化丁基橡胶(SBIIR,埃克森美孚化工ExxonTM)10份,氢化苯乙烯-丁二烯共聚物接枝马来酸酐2份,纳米二氧化硅5份,纳米滑石粉5份,硅烷偶联剂2份,纳米氧化锌1份,硬脂酸0.2份,硬脂酸锌0.5份,过氧化二异丙苯交联剂0.2份,偶氮二甲酰胺发泡剂0.5份。
将上所述一种滑板鞋鞋底的原料按照以下的制作工艺进行制作,具体包括以下步骤:
第一步:将以上原料中的乙烯-醋酸乙烯酯共聚物、部分氢化苯乙烯-丁二烯共聚物、星型支化溴化丁基橡胶、氢化苯乙烯-丁二烯共聚物接枝马来酸酐、纳米二氧化硅、纳米滑石粉、硅烷偶联剂、纳米氧化锌、硬脂酸、硬脂酸锌投入密炼机混炼6分钟,温度升至95℃后加入过氧化二异丙苯交联剂和偶氮二甲酰胺发泡剂,继续混炼1-2分钟,温度升至105℃后,出料并投入开炼机,先翻厚一次,厚度3-5mm,再束薄二次,每次厚度1-2mm,再翻厚一次,厚度3-5mm,再投入双螺杆挤出机造粒,造好的粒料室温静置24小时以上;
第二步:将静置好的粒料放入干燥桶内干燥2小时,干燥温度45-55℃;
第三步:将第二步干燥后的粒料由注射机进行注射发泡成型,注射温度85℃,模具温度170℃,硫化时间250秒;
第四步:将第三步发泡成型后的模具置于定型烘箱中进行定型,定型温度50℃,定型时间25分钟;冷却后取下模具,得到实施例二的滑板鞋鞋底。
实施例三:
一种滑板鞋鞋底,其原料按照重量份数具体如下:乙烯-醋酸乙烯酯共聚物(醋酸乙烯酯重量含量为40%)65份,部分氢化苯乙烯-丁二烯共聚物(SBBS,日本旭化成TUFTECTMP)40份,星型支化溴化丁基橡胶(SBIIR,埃克森美孚化工ExxonTM)20份,氢化苯乙烯-丁二烯共聚物接枝马来酸酐8份,纳米二氧化硅15份,纳米滑石粉15份,硅烷偶联剂8份,纳米氧化锌3份,硬脂酸0.8份,硬脂酸锌1.1份,过氧化二异丙苯交联剂0.8份,偶氮二甲酰胺发泡剂1.5份。
将上所述一种滑板鞋鞋底的原料按照以下的制作工艺进行制作,具体包括以下步骤:
第一步:将以上原料中的乙烯-醋酸乙烯酯共聚物、部分氢化苯乙烯-丁二烯共聚物、星型支化溴化丁基橡胶、氢化苯乙烯-丁二烯共聚物接枝马来酸酐、纳米二氧化硅、纳米滑石粉、硅烷偶联剂、纳米氧化锌、硬脂酸、硬脂酸锌投入密炼机混炼8分钟,温度升至100℃后加入过氧化二异丙苯交联剂和偶氮二甲酰胺发泡剂,继续混炼1-2分钟,温度升至115℃后,出料并投入开炼机,先翻厚一次,厚度3-5mm,再束薄二次,每次厚度1-2mm,再翻厚一次,厚度3-5mm,再投入双螺杆挤出机造粒,造好的粒料室温静置24小时以上;
第二步:将静置好的粒料放入干燥桶内干燥2小时,干燥温度55℃;
第三步:将第二步干燥后的粒料由注射机进行注射发泡成型,注射温度90℃,模具温度180℃,硫化时间400秒;
第四步:将第三步发泡成型后的模具置于定型烘箱中进行定型,定型温度90℃,定型时间35分钟;冷却后取下模具,得到实施例三的滑板鞋鞋底。
对比例一(传统硬橡胶鞋底):
其原料按照重量份数具体如下:顺丁橡胶:55份,丁苯橡胶:25份,天然橡胶:20份,气相二氧化硅:45份,氧化锌:5份,硬脂酸:0.5份,软化油:8份,松香树脂:1.5份,偶联剂:1份,防护蜡:1份,抗氧化剂:1份,硫化剂:1.5份,硫化促进剂:2份。
以上原料采用传统的橡胶鞋底硫化成型工艺成型,得到对比例一的传统硬橡胶鞋底。
对比例二(普通塑胶发泡材料)
其原料按照重量份数具体如下:乙烯-醋酸乙烯酯共聚物(醋酸乙烯酯含量40%):70份,乙烯-辛烯共聚物:20份,三元乙丙橡胶:10份,滑石粉:5份,硅烷偶联剂:5份,硬脂酸:0.5份,硬脂酸锌:0.8份,氧化锌:1份,过氧化二异丙苯交联剂:0.6份,偶氮二甲酰胺发泡剂:1.5份。
以上原料参考实施例1的方法制作鞋底,具体如下:
第一步:将以上原料中的乙烯-醋酸乙烯酯共聚物(醋酸乙烯酯含量40%),乙烯-辛烯共聚物,三元乙丙橡胶,滑石粉,硅烷偶联剂,硬脂酸,硬脂酸锌,氧化锌投入密炼机混炼8分钟,温度升至100℃后加入过氧化二异丙苯交联剂和偶氮二甲酰胺发泡剂,继续混炼1-2分钟,温度升至115℃后,出料并投入开炼机,先翻厚一次,厚度3-5mm,再束薄二次,每次厚度1-2mm,再翻厚一次,厚度3-5mm,再投入双螺杆挤出机造粒,造好的粒料室温静置24小时以上;
第二步:将静置好的粒料放入干燥桶内干燥2小时,干燥温度45-55℃;
第三步:将第二步干燥后的粒料由注射机进行注射发泡成型,注射温度85℃,模具温度170-180度,硫化时间350秒;
第四步:将第三步发泡成型后的模具置于定型烘箱中进行定型,定型温度80℃,定型时间30分钟;冷却后取下模具,得到对比例二的普通发泡材料滑板鞋鞋底。
将以上所得实施例一、实施例二、实施例三、对比例一、对比例二的鞋底做性能测试,得出以下性能对比表:
性能对比表
从以上性能对比表中可以看出测试结果,本发明(实施例一至实施例三)的硬度、耐磨和干、湿止滑性能和传统硬橡胶(对比例一)基本相当,而其密度则明显降低,说明本发明在满足鞋底止滑和耐磨性能的基础上,相对于传统硬橡胶更为轻便;其次,本发明(实施例一至实施例三)的硬度和普通塑胶发泡材料(对比例二)基本相当,而其耐磨和干、湿止滑性能则明显优于普通塑料发泡材料,说明本发明虽增加了一点密度但是相对于普通塑胶发泡材料更为耐磨止滑。因此本发明在滑板鞋底的应用是优于传统橡胶材料和普通塑料发泡材料的选择。
Claims (9)
1.一种滑板鞋鞋底,其特征在于:其原料按照重量份数包含以下物质:乙烯-醋酸乙烯酯共聚物45-65份,部分氢化苯乙烯-丁二烯共聚物20-40 份,星型支化溴化丁基橡胶10-20份,氢化苯乙烯-丁二烯共聚物接枝马来酸酐2-8份。
2.如权利要求1所述的一种滑板鞋鞋底,其特征在于:其鞋底原料按照重量分数的还包括以下物质:纳米二氧化硅5-15份,纳米滑石粉5-15份,填料表面处理剂2-8份,降温活化剂1-3份,硬脂酸0.2-0.8份,硬脂酸锌0.5-1.1 份,交联剂0.2-0.8份,发泡剂0.5-1.5 份。
3.如权利要求2所述的一种滑板鞋鞋底,其特征在于:所述填料表面处理剂为硅烷偶联剂。
4.如权利要求2所述的一种滑板鞋鞋底,其特征在于:所述降温活化剂为纳米氧化锌。
5.如权利要求1所述的一种滑板鞋鞋底,其特征在于:所述交联剂为过氧化二异丙苯。
6.如权利要求1所述的一种滑板鞋鞋底,其特征在于:所述发泡剂为偶氮二甲酰胺发泡剂。
7.如权利要求1所述的一种滑板鞋鞋底,其特征在于:乙烯-醋酸乙烯酯共聚物中醋酸乙烯酯重量含量为30%-40%。
8.如权利要求1所述的一种滑板鞋鞋底,其特征在于:所述的部分氢化苯乙烯-丁二烯共聚物为日本旭化成公司生产的TUFTECTM P。
9.如权利要求1-8所述一种滑板鞋鞋底的制作工艺,包括以下步骤:
第一步:乙烯-醋酸乙烯酯共聚物、部分氢化苯乙烯-丁二烯共聚物、星型支化溴化丁基橡胶、氢化苯乙烯-丁二烯共聚物接枝马来酸酐、纳米二氧化硅、纳米滑石粉、硅烷偶联剂、纳米氧化锌、硬脂酸、硬脂酸锌按配方比例投入密炼机混炼6-8分钟,温度升至95℃-100℃后加入过氧化二异丙苯交联剂和偶氮二甲酰胺发泡剂,继续混炼1-2分钟,温度升至105℃-115℃后,出料并投入开炼机,先翻厚一次,厚度3-5mm,再束薄二次,每次厚度1-2mm,再翻厚一次,厚度3-5mm,再投入双螺杆挤出机造粒,造好的粒料室温静置24小时以上;
第二步:将静置好的粒料放入干燥桶内干燥2小时,干燥温度45-55℃;
第三步:将第二步所得的干燥后的粒料由注射机进行注射发泡成型,注射温度80-90℃,模具温度170-180度,硫化时间250-400秒;
第四步:将第三步发泡成型后的模具置于定型烘箱中进行定型,定型温度50-90℃,定型时间25-35分钟;第三步:冷却后取下模具,得到所需滑板鞋鞋底。
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