CN107141582A - 一种耐磨eva鞋底及其制作工艺 - Google Patents
一种耐磨eva鞋底及其制作工艺 Download PDFInfo
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- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
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- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
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- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- General Chemical & Material Sciences (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
本发明公开了一种耐磨EVA鞋底及其制作工艺,属于EVA拖鞋及其制作工艺领域,所述EVA鞋底包括如下质量百分比的原料:乙烯‑醋酸乙烯酯共聚物50%~60%,低聚物多元醇4%~6%,二异氰酸酯6%~9%,矿渣棉6%~10%,聚脲5%~8%,填料5%~8%,发泡剂1%~2%,交联剂1%~2%,催化剂2%~3%,光稳定剂1%~2%,硬脂酸锌0.5%~1.5%,硬脂酸钙0.5%~1.5%;所述制作工艺包括原料准备、制作EVA料米、注射成型、喷涂底层、修整处理、清洗干燥等步骤。本发明具备优异的耐磨性能,且强度、防滑性、柔韧性等其他性能也达到了优良水平;还可降低生产成本,减轻EVA鞋底自重。
Description
技术领域
本发明涉及EVA拖鞋及其制作工艺领域,具体的涉及一种耐磨EVA鞋底及其制作工艺。
背景技术
EVA鞋底所用的材料为乙烯/醋酸乙烯酯共聚物(也称为乙烯-乙酸乙烯共聚物),是由乙烯(E)和乙酸乙烯(VA)共聚而制得,其含量在5%~40%,与聚乙烯相比,EVA由于在分子链中引入了醋酸乙烯单体,从而降低了高结晶度,提高了柔韧性、抗冲击性、填料相容性和热密封性能,被广泛应用于发泡鞋料、功能性棚膜、包装膜、热熔胶、电线电缆及玩具等领域。EVA是一种比较常见的中底材料,通常称为一次发泡,有一定的缓冲作用,但这种材料很滑,所以一般是和硬橡胶混合使用。EVA鞋底的特点是具有良好的柔软性,橡胶般的弹性,在0℃以下仍能保持具有较好的可挠性,透明性和表面光泽度好,化学稳定性良好,抗老化和抗臭氧强度好,无毒性。与填料的掺混性好,着色和成型加工性好。
目前,现有的EVA鞋底的种类很多,有耐磨的,防滑的,环保的等等。例如,公告号为CN 103242584 B的专利公开了一种耐磨EVA鞋底料,其具备良好的耐磨性能,材料体系的均匀度及表面光洁性也较好,但是,其耐磨性还有提升空间,且防滑等其他性能存在不足之处。
发明内容
1.要解决的技术问题
本发明要解决的技术问题在于提供一种耐磨EVA鞋底及其制作工艺,该EVA鞋底具备优异的耐磨性能,且强度、防滑性、柔韧性等其他性能也达到了优良水平;还可降低生产成本,减轻EVA鞋底自重。
2.技术方案
为解决上述问题,本发明采取如下技术方案:
一种耐磨EVA鞋底,包括如下质量百分比的原料:
乙烯-醋酸乙烯酯共聚物50%~60%;
低聚物多元醇4%~6%;
二异氰酸酯6%~9%;
矿渣棉6%~10%;
聚脲5%~8%;
填料5%~8%;
发泡剂1%~2%;
交联剂1%~2%;
催化剂2%~3%;
光稳定剂1%~2%;
硬脂酸锌0.5%~1.5%;
硬脂酸钙0.5%~1.5%。
进一步地,所述EVA鞋底包括如下质量百分比的原料:
乙烯-醋酸乙烯酯共聚物55%;
低聚物多元醇5%;
二异氰酸酯8%;
矿渣棉9%;
聚脲7%;
填料7%;
发泡剂2%;
交联剂2%;
催化剂2%;
光稳定剂1%;
硬脂酸锌1%;
硬脂酸钙1%。
具体地,所述填料为活性氧化锌、海泡石、木质素中的任意一种或至少两种的混合物。活性氧化锌可作为EVA的补强剂、活性剂及硫化剂,也可作为白色胶料的着色剂和填充剂。胶料中加入活性氧化锌后,能使EVA具有良好的耐磨性、耐撕裂性和弹性。海泡石在浅色的EVA制品中用作补强剂,性能仅次于白炭黑。用硅烷处理海泡石粉,其补强性能接近白炭黑,价格却仅为白炭黑的一半。它耐酸碱、耐化学腐蚀,在EVA制品中分散性能好。木质素可与EVA之间达到分子级的渗透与交联,从而使EVA具有良好的综合性能。其力学性质与高耐磨炉法炭黑相当,在EVA中的配比比炭黑高出一倍,可减少EVA的用量,进而降低成本。上述三种填料可进一步提升EVA的耐磨性及其他性能。
具体地,所述光稳定剂为氧化锌。氧化锌是一种有效且廉价的白色光稳定剂。特别对240~30nm范围的UV光有较好的防护能力。其特点在于具有优良的紫外线屏蔽能力,从而能延长材料的使用寿命。另外,氧化锌还能作为发泡剂的助发泡剂,促进发泡剂发挥更大的性能作用。
具体地,所述发泡剂为偶氮二甲酰胺或可膨胀微球发泡剂中的任意一种。偶氮二甲酰胺是一种白色或淡黄色粉末,无毒,无嗅,不易燃烧,具有自熄性,溶于碱,不溶于汽油、醇、苯、吡啶和水。是一种在工业中常用到的发泡剂,可用于瑜伽垫、橡胶鞋底等生产,以增加产品的弹性;可膨胀微球发泡剂也是一种应用较好的发泡材料。
具体地,所述交联剂为无苯过氧化物交联剂,脱模效果好,相比BIBP交联剂,具有明显的优势,同时有效减少了对周围大气环境的污染,环保效益高;可提高生产效率,降低生产成本。
具体地,所述催化剂为BICAT。BICAT催化剂(有机铋催化剂)的主要成分为新癸酸铋和有机酸,不含汞、铅、砷、钡等可溶性重金属,不含有机锡,是一种环保型催化剂。
本发明还公开了一种上述耐磨EVA鞋底的制作工艺,包括如下步骤:
a.原料准备:按质量百分数准备好各原料;
b.制作EVA料米:先将乙烯-醋酸乙烯酯共聚物、低聚物多元醇、二异氰酸酯、矿渣棉、填料、光稳定剂、催化剂、硬脂酸锌及硬脂酸钙混合均匀,在90~100℃的温度环境中进行密炼,再加入发泡剂、交联剂,混合均匀后进行升温密炼,出料温度为105~110℃,密炼结束后进行开炼、造粒,得到EVA料米;
c.注射成型:将步骤b中所得EVA料米倒入EVA注射机台的吸料桶,经一次射出成型,得到EVA鞋底基体;
d.喷涂底层:采用喷涂的方法,将聚脲喷涂于步骤c中所得EVA鞋底基体底面上,形成聚脲防护层,得到EVA鞋底样体;
e.修整处理:将步骤d中所得EVA鞋底样体进行修整,并根据需要制出凹槽和防滑纹;
f.清洗、干燥:将步骤e中处理后的EVA鞋底样体清洗后干燥,即得EVA鞋底成品。
3.有益效果
(1)本发明所提供的EVA鞋底的原料中包括低聚物多元醇和二异氰酸酯,多元醇和二异氰酸酯在催化剂的作用下,可生成聚氨酯弹性体。聚氨酯弹性体密度低,质地柔软,舒适轻便;尺寸稳定性好,储存寿命长;可在较宽的硬度范围内具有较高的弹性及强度,优异的耐磨性、耐油性、耐挠曲性、耐疲劳性、抗震动性及防滑性,且具有“耐磨橡胶”之称。其应用于EVA鞋底,可使鞋底具备优异的耐磨性,并提升其他性能。
(2)本发明所提供的EVA鞋底的原料中包括矿渣棉,矿渣棉是一种由钢铁高炉渣矿渣制成的棉丝状无机短纤维。它具有质轻、导热系数小、不燃烧、防蛀、价廉、耐腐蚀、化学稳定性好、吸声性能好等特点。应用于EVA鞋底,可减少其他用料的用量,从而降低生产成本,并减轻EVA鞋底自重。
(3)本发明所提供的EVA鞋底的原料中包括聚脲,聚脲是由异氰酸酯组份与氨基化合物组份反应生成的一种弹性体物质。聚脲的最基本的特性就是防腐、防水、耐磨等。聚脲喷涂于EVA鞋底基体底部,形成防护层,可进一步加固EVA鞋底的耐磨性能。另外,聚脲还具有其他优异的理化性质:极高的抗张抗冲击强度、柔韧性、防湿滑、耐老化,良好的热稳定性等,可进一步防护EVA鞋底基体;聚脲不用催化剂即可快速固化,可在任意曲面、料面及垂直面上喷涂成型,施工工艺简单、无污染。
本发明所提供的EVA鞋底具备优异的耐磨性能,且强度、防滑性、柔韧性等其他性能也达到了优良水平;还可降低生产成本,减轻EVA鞋底自重。
具体实施方式
下面通过实施例对本发明作进一步详细的说明。
实施例1
一种耐磨EVA鞋底,包括如下质量百分比的原料:
乙烯-醋酸乙烯酯共聚物50%;
低聚物多元醇6%;
二异氰酸酯9%;
矿渣棉10%;
聚脲5%;
填料8%;
发泡剂2%;
交联剂2%;
催化剂3%;
光稳定剂2%;
硬脂酸锌1.5%;
硬脂酸钙1.5%。
具体地,所述填料为活性氧化锌;
所述光稳定剂为氧化锌;
所述发泡剂为偶氮二甲酰胺(发泡剂AC);
所述交联剂为无苯过氧化物交联剂;
所述催化剂为BICAT。
上述耐磨EVA鞋底的制作工艺,包括如下步骤:
a.原料准备:按质量百分数准备好各原料;
b.制作EVA料米:先将乙烯-醋酸乙烯酯共聚物、低聚物多元醇、二异氰酸酯、矿渣棉、填料、光稳定剂、催化剂、硬脂酸锌及硬脂酸钙混合均匀,在90℃的温度环境中进行密炼,再加入发泡剂、交联剂,混合均匀后进行升温密炼,出料温度为105℃,密炼结束后进行开炼、造粒,得到EVA料米;
c.注射成型:将步骤b中所得EVA料米倒入EVA注射机台的吸料桶,经一次射出成型,得到EVA鞋底基体;
d.喷涂底层:采用喷涂的方法,将聚脲喷涂于步骤c中所得EVA鞋底基体底面上,形成聚脲防护层,得到EVA鞋底样体;
e.修整处理:将步骤d中所得EVA鞋底样体进行修整,并根据需要制出凹槽和防滑纹;
f.清洗、干燥:将步骤e中处理后的EVA鞋底样体清洗后干燥,即得EVA鞋底成品。
实施例2
一种耐磨EVA鞋底,包括如下质量百分比的原料:
乙烯-醋酸乙烯酯共聚物54%;
低聚物多元醇5.5%;
二异氰酸酯8%;
矿渣棉9%;
聚脲6%;
填料8%;
发泡剂1.5%;
交联剂1.5%;
催化剂2.5%;
光稳定剂1%;
硬脂酸锌1.5%;
硬脂酸钙1.5%。
具体地,所述填料为木质素;
所述光稳定剂为氧化锌;
所述发泡剂为可膨胀微球发泡剂;
所述交联剂为BIBP交联剂;
所述催化剂为BICAT。
上述耐磨EVA鞋底的制作工艺,包括如下步骤:
a.原料准备:按质量百分数准备好各原料;
b.制作EVA料米:先将乙烯-醋酸乙烯酯共聚物、低聚物多元醇、二异氰酸酯、矿渣棉、填料、光稳定剂、催化剂、硬脂酸锌及硬脂酸钙混合均匀,在92℃的温度环境中进行密炼,再加入发泡剂、交联剂,混合均匀后进行升温密炼,出料温度为106℃,密炼结束后进行开炼、造粒,得到EVA料米;
c.注射成型:将步骤b中所得EVA料米倒入EVA注射机台的吸料桶,经一次射出成型,得到EVA鞋底基体;
d.喷涂底层:采用喷涂的方法,将聚脲喷涂于步骤c中所得EVA鞋底基体底面上,形成聚脲防护层,得到EVA鞋底样体;
e.修整处理:将步骤d中所得EVA鞋底样体进行修整,并根据需要制出凹槽和防滑纹;
f.清洗、干燥:将步骤e中处理后的EVA鞋底样体清洗后干燥,即得EVA鞋底成品。
实施例3
一种耐磨EVA鞋底,包括如下质量百分比的原料:
乙烯-醋酸乙烯酯共聚物55%;
低聚物多元醇5%;
二异氰酸酯8%;
矿渣棉9%;
聚脲7%;
填料7%;
发泡剂2%;
交联剂2%;
催化剂2%;
光稳定剂1%;
硬脂酸锌1%;
硬脂酸钙1%。
具体地,所述填料为活性氧化锌、海泡石、木质素的混合物;
所述光稳定剂为氧化锌;
所述发泡剂为偶氮二甲酰胺;
所述交联剂为无苯过氧化物交联剂;
所述催化剂为BICAT。
上述耐磨EVA鞋底的制作工艺,包括如下步骤:
a.原料准备:按质量百分数准备好各原料;
b.制作EVA料米:先将乙烯-醋酸乙烯酯共聚物、低聚物多元醇、二异氰酸酯、矿渣棉、填料、光稳定剂、催化剂、硬脂酸锌及硬脂酸钙混合均匀,在95℃的温度环境中进行密炼,再加入发泡剂、交联剂,混合均匀后进行升温密炼,出料温度为108℃,密炼结束后进行开炼、造粒,得到EVA料米;
c.注射成型:将步骤b中所得EVA料米倒入EVA注射机台的吸料桶,经一次射出成型,得到EVA鞋底基体;
d.喷涂底层:采用喷涂的方法,将聚脲喷涂于步骤c中所得EVA鞋底基体底面上,形成聚脲防护层,得到EVA鞋底样体;
e.修整处理:将步骤d中所得EVA鞋底样体进行修整,并根据需要制出凹槽和防滑纹;
f.清洗、干燥:将步骤e中处理后的EVA鞋底样体清洗后干燥,即得EVA鞋底成品。
实施例4
一种耐磨EVA鞋底,包括如下质量百分比的原料:
乙烯-醋酸乙烯酯共聚物58%;
低聚物多元醇5%;
二异氰酸酯7.5%;
矿渣棉8%;
聚脲8%;
填料6%;
发泡剂1%;
交联剂1%;
催化剂3%;
光稳定剂1.5%;
硬脂酸锌0.5%;
硬脂酸钙0.5%。
具体地,所述填料为活性氧化锌、海泡石的混合物。
所述光稳定剂为氧化锌;
所述发泡剂为可膨胀微球发泡剂;
所述交联剂为无苯过氧化物交联剂;
所述催化剂为BICAT。
上述耐磨EVA鞋底的制作工艺,包括如下步骤:
a.原料准备:按质量百分数准备好各原料;
b.制作EVA料米:先将乙烯-醋酸乙烯酯共聚物、低聚物多元醇、二异氰酸酯、矿渣棉、填料、光稳定剂、催化剂、硬脂酸锌及硬脂酸钙混合均匀,在98℃的温度环境中进行密炼,再加入发泡剂、交联剂,混合均匀后进行升温密炼,出料温度为109℃,密炼结束后进行开炼、造粒,得到EVA料米;
c.注射成型:将步骤b中所得EVA料米倒入EVA注射机台的吸料桶,经一次射出成型,得到EVA鞋底基体;
d.喷涂底层:采用喷涂的方法,将聚脲喷涂于步骤c中所得EVA鞋底基体底面上,形成聚脲防护层,得到EVA鞋底样体;
e.修整处理:将步骤d中所得EVA鞋底样体进行修整,并根据需要制出凹槽和防滑纹;
f.清洗、干燥:将步骤e中处理后的EVA鞋底样体清洗后干燥,即得EVA鞋底成品。
实施例5
一种耐磨EVA鞋底,包括如下质量百分比的原料:
乙烯-醋酸乙烯酯共聚物60%;
低聚物多元醇4%;
二异氰酸酯6%;
矿渣棉6%;
聚脲8%;
填料5%;
发泡剂2%;
交联剂1.5%;
催化剂2.5%;
光稳定剂2%;
硬脂酸锌1.5%;
硬脂酸钙1.5%。
具体地,所述填料为活性氧化锌和木质素的混合物;
所述光稳定剂为氧化锌;
所述发泡剂为偶氮二甲酰胺;
所述交联剂为过氧化二异丙苯;
所述催化剂为BICAT。
上述耐磨EVA鞋底的制作工艺,包括如下步骤:
a.原料准备:按质量百分数准备好各原料;
b.制作EVA料米:先将乙烯-醋酸乙烯酯共聚物、低聚物多元醇、二异氰酸酯、矿渣棉、填料、光稳定剂、催化剂、硬脂酸锌及硬脂酸钙混合均匀,在100℃的温度环境中进行密炼,再加入发泡剂、交联剂,混合均匀后进行升温密炼,出料温度为110℃,密炼结束后进行开炼、造粒,得到EVA料米;
c.注射成型:将步骤b中所得EVA料米倒入EVA注射机台的吸料桶,经一次射出成型,得到EVA鞋底基体;
d.喷涂底层:采用喷涂的方法,将聚脲喷涂于步骤c中所得EVA鞋底基体底面上,形成聚脲防护层,得到EVA鞋底样体;
e.修整处理:将步骤d中所得EVA鞋底样体进行修整,并根据需要制出凹槽和防滑纹;
f.清洗、干燥:将步骤e中处理后的EVA鞋底样体清洗后干燥,即得EVA鞋底成品。
对比例
一种EVA鞋底,包括包括如下质量百分比的原料:
乙烯-醋酸乙烯酯共聚物75%;
耐磨剂8%
填料8%;
发泡剂2%;
交联剂2%;
光稳定剂2%;
硬脂酸锌1.5%;
硬脂酸钙1.5%。
上述EVA鞋底的制作工艺为:先将所有原料混合密炼,制作EVA料米;再注射成型,得到EVA鞋底成品。
将各实施例与对比例进行相关性能参数的对比,结果如表1所示:
表1各实施例与对比例的相关性能参数对比表
由表1可知,本发明所提供的EVA鞋底具备优异的耐磨性能,且拉伸强度较高;还可降低生产成本,减轻EVA鞋底自重;另外,经实验,实施例产品的防滑性也较好。
本技术领域中的普通技术人员应当认识到,以上的实施例仅是用来说明本发明,而并非用作为对本发明的限定,只要在本发明的实质精神范围内,对以上所述实施例的变化、变型都将落在本发明的权利要求范围内。
Claims (8)
1.一种耐磨EVA鞋底,其特征在于,包括如下质量百分比的原料:
乙烯-醋酸乙烯酯共聚物50%~60%;
低聚物多元醇4%~6%;
二异氰酸酯6%~9%;
矿渣棉6%~10%;
聚脲5%~8%;
填料5%~8%;
发泡剂1%~2%;
交联剂1%~2%;
催化剂2%~3%;
光稳定剂1%~2%;
硬脂酸锌0.5%~1.5%;
硬脂酸钙0.5%~1.5%。
2.根据权利要求1所述的一种耐磨EVA鞋底,其特征在于,包括如下质量百分比的原料:
乙烯-醋酸乙烯酯共聚物55%;
低聚物多元醇5%;
二异氰酸酯8%;
矿渣棉9%;
聚脲7%;
填料7%;
发泡剂2%;
交联剂2%;
催化剂2%;
光稳定剂1%;
硬脂酸锌1%;
硬脂酸钙1%。
3.根据权利要求1所述的一种耐磨EVA鞋底,其特征在于,所述填料为活性氧化锌、海泡石、木质素中的任意一种或至少两种的混合物。
4.根据权利要求1所述的一种耐磨EVA鞋底,其特征在于,所述光稳定剂为氧化锌。
5.根据权利要求1所述的一种耐磨EVA鞋底,其特征在于,所述发泡剂为偶氮二甲酰胺或可膨胀微球发泡剂中的任意一种。
6.根据权利要求1所述的一种耐磨EVA鞋底,其特征在于,所述交联剂为无苯过氧化物交联剂。
7.根据权利要求1所述的一种耐磨EVA鞋底,其特征在于,所述催化剂为BICAT。
8.一种如权利要求1~7任一项所述的耐磨EVA鞋底的制作工艺,其特征在于,包括如下步骤:
原料准备:按质量百分数准备好各原料;
制作EVA料米:先将乙烯-醋酸乙烯酯共聚物、低聚物多元醇、二异氰酸酯、矿渣棉、填料、光稳定剂、催化剂、硬脂酸锌及硬脂酸钙混合均匀,在90~100℃的温度环境中进行密炼,再加入发泡剂、交联剂,混合均匀后进行升温密炼,出料温度为105~110℃,密炼结束后进行开炼、造粒,得到EVA料米;
注射成型:将步骤b中所得EVA料米倒入EVA注射机台的吸料桶,经一次射出成型,得到EVA鞋底基体;
喷涂底层:采用喷涂的方法,将聚脲喷涂于步骤c中所得EVA鞋底基体底面上,形成聚脲防护层,得到EVA鞋底样体;
修整处理:将步骤d中所得EVA鞋底样体进行修整,并根据需要制出凹槽和防滑纹;
清洗、干燥:将步骤e中处理后的EVA鞋底样体清洗后干燥,即得EVA鞋底成品。
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Denomination of invention: A wear-resistant EVA sole and its manufacturing process Effective date of registration: 20230804 Granted publication date: 20190510 Pledgee: Jinjiang sub branch of China Post Savings Bank Co.,Ltd. Pledgor: FUJIAN JINHONGCHANG SPORTING GOODS CO.,LTD. Registration number: Y2023980050873 |