CN112625335A - 一种高韧性防开裂中底 - Google Patents
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Abstract
本发明公开了一种高韧性防开裂中底,中底材料中掺有聚酰胺纤维材料,本发明提供的一种高韧性防开裂中底,由于在中底的密炼过程中加入了聚酰胺纤维,聚酰胺纤维强度高,伸长大、弹性好、耐磨耐热性优良,使得中底的韧性大幅度提高,且聚酰胺纤维的弹性使得鞋子穿着更加舒适,在达到缓震效果的同时,能达到较高的韧性和舒适性以适应更高强度的运动。
Description
技术领域
本发明属于鞋加工技术领域,具体涉及一种高韧性防开裂中底及其制备方法。
背景技术
鞋是人们的生活必需品,可以保暖,还可以保护脚,然而鞋底对于鞋是非常重要的,鞋底的构造相当复杂,就广义而言,可包括大底、中底与鞋跟等所有构成底部的材料。鞋的中底,就是鞋底和鞋身中间的夹层部分,一般厚度在1-2cm左右,用来起到缓冲地面震动的作用。球鞋中底是承载缓震科技最核心的部位,科学研究证明,奔跑时地面给身体造成的冲击是步行时的8倍,因此一双球鞋的性能如何,鞋中底的好坏很重要。如果没有鞋中底,跑步或其他运动的时候产生的震动和摩擦会不断的伤害身体,尤其是骨骼、膝盖、脚底、脚踝、脚面、大腿、小腿等,这些会被震动伤害到的部位覆盖了整个腿部。在一些横向的动作(侧向急停或是变相、横向防守等)中,很容易因为速度过快或者冲击力过大,造成球鞋会产生类似于扭转的形变。而中底支撑版的作用就是防止这样的动作让球员产生崴脚甚至关节性骨折这样的意外。中底在承载缓震作用同时也需要具有较高的韧性和舒适性,然而市售的鞋类产品,其中底料一般为发泡材料,虽然达到了缓震的效果但并不能达到较高的韧性和舒适性以适应更高强度的运动。
发明内容
针对上述现有技术中存在的鞋类产品的中底需要较高的韧性和舒适性的问题,本发明的目的是提供一种高韧性防开裂中底。
本发明的是以下述方式实现的:
一种高韧性防开裂中底,中底材料中掺有聚酰胺纤维材料。
所述聚酰胺纤维的重量份为24.5-34.9份,长度为3-6mm。
所述中底包括以下重量份的原料:EVA 乙烯-乙酸乙烯共聚物 50-65份,硬质塑料粒 20-30份,乙丙橡胶 5-10份,滑石粉1-6份,硬脂酸0.1-0.6份,硬脂酸锌0.2-1.0份,氧化锌0.6-1.7份,交联剂0.4-1.3份,发泡剂2-3.4份,钛白粉1-4份,流动剂1.6-2.7份。
所述EVA 乙烯-乙酸乙烯共聚物的硬度为86-89ShoreA,所述硬质塑料粒的硬度为93ShoreA以上。
一种高韧性防开裂中底的制备方法,包括以下步骤:
(1)将聚酰胺纤维,EVA 乙烯-乙酸乙烯共聚物,硬质塑料粒,乙丙橡胶,滑石粉,硬脂酸,硬脂酸锌,氧化锌,钛白粉,流动剂混合均匀;
(2)将步骤(1)中的混合物在密炼时间10-20min,温度115-135℃条件下密炼混合;
(3)将步骤(2)中混合物加入交联剂和发泡剂,在密炼时间2-5min,温度105-115℃条件下二次密炼;
(4)用滚轮机对二次密炼所得混合物进行束薄,束薄3遍,束薄层厚度为2-3mm;
(5)将步骤(4)所得混合物制成直径为5mm的颗粒,该颗粒由切割机切割得到;
(6)将步骤(5)中所得颗粒原料按照配方对应的模具注射成型,在温度为175℃下进行加硫成型300s,模具发泡倍率为150%,发泡密度为0.17-0.2g/cm³;
(7)将步骤(6)中所得的鞋子经烤箱定型制成EVA发泡型材成品。
相对于现有技术,本发明的有益效果为,本发明提供的一种高韧性防开裂中底,由于在中底的密炼过程中加入了聚酰胺纤维,聚酰胺纤维强度高,伸长大、弹性好、耐磨耐热性优良,使得中底的韧性大幅度提高,且聚酰胺纤维的弹性使得鞋子穿着更加舒适,在达到缓震效果的同时,能达到较高的韧性和舒适性以适应更高强度的运动。
具体实施方式
为了使本发明的技术方案及优点更加清楚明白,以下结合具体实施例对本发明进行进一步详细说明,应当理解,此处所描述的具体实施例仅仅用于解释本发明,并不用于限定本发明,下面结合具体实施方式对本发明作进一步详细说明。
应该指出,以下详细说明都是例式性的,旨在对本申请提供进一步的说明。除非另有指明,本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的技术含义相同。
实施例1:
一种高韧性防开裂中底,中底材料中掺有聚酰胺纤维材料。
所述聚酰胺纤维的重量份为26份,长度为5mm。
所述中底包括以下重量份的原料:EVA 乙烯-乙酸乙烯共聚物50份,硬质塑料粒20份,乙丙橡胶5份,滑石粉2份,硬脂酸0.2份,硬脂酸锌0.5份,氧化锌0.8份,交联剂0.8份,发泡剂3.0份,钛白粉2份,流动剂2.5份。
所述EVA 乙烯-乙酸乙烯共聚物的硬度为86-89ShoreA,所述硬质塑料粒的硬度为93ShoreA以上。
一种高韧性防开裂中底的制备方法,包括以下步骤:
(1)将聚酰胺纤维,EVA 乙烯-乙酸乙烯共聚物,硬质塑料粒,乙丙橡胶,滑石粉,硬脂酸,硬脂酸锌,氧化锌,钛白粉,流动剂混合均匀;
(2)将步骤(1)中的混合物在密炼时间18min,温度125℃条件下密炼混合;
(3)将步骤(2)中混合物加入交联剂和发泡剂,在密炼时间3min,温度110℃条件下二次密炼;
(4)用滚轮机对二次密炼所得混合物进行束薄,束薄3遍,束薄层厚度为3mm;
(5)将步骤(4)所得混合物制成直径为5mm的颗粒,该颗粒由切割机切割得到;
(6)将步骤(5)中所得颗粒原料按照配方对应的模具注射成型,在温度为175℃下进行加硫成型300s,模具发泡倍率为150%,发泡密度为0.18g/cm³;
(7)将步骤(6)中所得的鞋子经烤箱定型制成EVA发泡型材成品。
实施例2:
一种高韧性防开裂中底,中底材料中掺有聚酰胺纤维材料。
所述聚酰胺纤维的重量份为28份,长度为4mm。
所述中底包括以下重量份的原料:EVA 乙烯-乙酸乙烯共聚物55份,硬质塑料粒25份,乙丙橡胶6份,滑石粉3份,硬脂酸0.4份,硬脂酸锌0.7份,氧化锌1.0份,交联剂0.7份,发泡剂2.5份,钛白粉3份,流动剂2.0份。
所述EVA 乙烯-乙酸乙烯共聚物的硬度为86-89ShoreA,所述硬质塑料粒的硬度为93ShoreA以上。
一种高韧性防开裂中底的制备方法,包括以下步骤:
(1)将聚酰胺纤维,EVA 乙烯-乙酸乙烯共聚物,硬质塑料粒,乙丙橡胶,滑石粉,硬脂酸,硬脂酸锌,氧化锌,钛白粉,流动剂混合均匀;
(2)将步骤(1)中的混合物在密炼时间19min,温度120℃条件下密炼混合;
(3)将步骤(2)中混合物加入交联剂和发泡剂,在密炼时间4min,温度113℃条件下二次密炼;
(4)用滚轮机对二次密炼所得混合物进行束薄,束薄3遍,束薄层厚度为3mm;
(5)将步骤(4)所得混合物制成直径为5mm的颗粒,该颗粒由切割机切割得到;
(6)将步骤(5)中所得颗粒原料按照配方对应的模具注射成型,在温度为175℃下进行加硫成型300s,模具发泡倍率为150%,发泡密度为0.18g/cm³;
(7)将步骤(6)中所得的鞋子经烤箱定型制成EVA发泡型材成品。
实施例3:
一种高韧性防开裂中底,中底材料中掺有聚酰胺纤维材料。
所述聚酰胺纤维的重量份为32份,长度为3mm。
所述中底包括以下重量份的原料:EVA 乙烯-乙酸乙烯共聚物 60份,硬质塑料粒30份,乙丙橡胶10份,滑石粉5份,硬脂酸0.3份,硬脂酸锌0.8份,氧化锌1.5份,交联剂1.0份,发泡剂2.2份,钛白粉4份,流动剂1.8份。
所述EVA 乙烯-乙酸乙烯共聚物的硬度为86-89ShoreA,所述硬质塑料粒的硬度为93ShoreA以上。
一种高韧性防开裂中底的制备方法,包括以下步骤:
(1)将聚酰胺纤维,EVA 乙烯-乙酸乙烯共聚物,硬质塑料粒,乙丙橡胶,滑石粉,硬脂酸,硬脂酸锌,氧化锌,钛白粉,流动剂混合均匀;
(2)将步骤(1)中的混合物在密炼时间20min,温度130℃条件下密炼混合;
(3)将步骤(2)中混合物加入交联剂和发泡剂,在密炼时间5min,温度108℃条件下二次密炼;
(4)用滚轮机对二次密炼所得混合物进行束薄,束薄3遍,束薄层厚度为2mm;
(5)将步骤(4)所得混合物制成直径为5mm的颗粒,该颗粒由切割机切割得到;
(6)将步骤(5)中所得颗粒原料按照配方对应的模具注射成型,在温度为175℃下进行加硫成型300s,模具发泡倍率为150%,发泡密度为0.2g/cm³;
(7)将步骤(6)中所得的鞋子经烤箱定型制成EVA发泡型材成品。
本发明提供的一种高韧性防开裂中底,由于在中底的密炼过程中加入了聚酰胺纤维,聚酰胺纤维强度高,伸长大、弹性好、耐磨耐热性优良,使得中底的韧性大幅度提高,且聚酰胺纤维的弹性使得鞋子穿着更加舒适,在达到缓震效果的同时,能达到较高的韧性和舒适性以适应更高强度的运动。
以上所述仅为本申请的优选实施例而已,并不用于限制本申请,对于本领域的技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。
Claims (5)
1.一种高韧性防开裂中底,其特征在于:中底材料中掺有聚酰胺纤维材料。
2.根据权利要求1所述的一种高韧性防开裂中底,其特征在于:所述聚酰胺纤维的重量份为24.5-34.9份,长度为3-6mm。
3.根据权利要求1所述的一种高韧性防开裂中底,其特征在于:所述中底包括以下重量份的原料:EVA 乙烯-乙酸乙烯共聚物 50-65份,硬质塑料粒 20-30份,乙丙橡胶 5-10份,滑石粉1-6份,硬脂酸0.1-0.6份,硬脂酸锌0.2-1.0份,氧化锌0.6-1.7份,交联剂0.4-1.3份,发泡剂2-3.4份,钛白粉1-4份,流动剂1.6-2.7份。
4.根据权利要求1所述的一种高韧性防开裂中底,其特征在于:所述EVA 乙烯-乙酸乙烯共聚物的硬度为86-89ShoreA,所述硬质塑料粒的硬度为93ShoreA以上。
5.一种高韧性防开裂中底的制备方法,包括以下步骤:
(1)将聚酰胺纤维,EVA 乙烯-乙酸乙烯共聚物,硬质塑料粒,乙丙橡胶,滑石粉,硬脂酸,硬脂酸锌,氧化锌,钛白粉,流动剂混合均匀;
(2)将步骤(1)中的混合物在密炼时间10-20min,温度115-135℃条件下密炼混合;
(3)将步骤(2)中混合物加入交联剂和发泡剂,在密炼时间2-5min,温度105-115℃条件下二次密炼;
(4)用滚轮机对二次密炼所得混合物进行束薄,束薄3遍,束薄层厚度为2-3mm;
(5)将步骤(4)所得混合物制成直径为5mm的颗粒;
(6)将步骤(5)中所得颗粒原料按照配方对应的模具注射成型,在温度为175℃下进行加硫成型300s,模具发泡倍率为150%,发泡密度为0.17-0.2g/cm³;
(7)将步骤(6)中所得的鞋子经烤箱定型制成EVA发泡型材成品。
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