CN108774378B - 一种高弹缓震橡塑材料、缓震高弹鞋底及其制备工艺 - Google Patents
一种高弹缓震橡塑材料、缓震高弹鞋底及其制备工艺 Download PDFInfo
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Abstract
本发明公开了一种高弹缓震橡塑材料,包括原料组分:热塑性弹性体:15~25份;乙烯‑辛烯嵌段共聚物:15~25份;三元乙丙橡胶:4~8份;乙烯‑辛烯共聚物:35~45份;氢化苯乙烯‑丁二烯嵌段共聚物:8‑12份;硬酯酸:0.4‑0.6份;硬酯酸锌:0.5~1.5份;丙酮:0.7~1.2份;交联剂:0.4~0.8份;引发剂:0.5~1.5份。本发明还公开了包括以上高弹缓震橡塑材料的缓震高弹鞋底及其制备方法,本发明鞋底综合性能良好,成本低,尤其具有良好的高弹性和缓震性,适用于制作运动鞋。
Description
技术领域
本发明涉及一种鞋底技术领域,具体为一种高弹缓震橡塑材料、应用该材料的鞋底、以及鞋底的制备。
背景技术
塑料和橡胶是以高分子聚合物为基础添加各种助剂而成的混合物体系,在常温下有固定的形状和强度,在高温下具有可塑性的高分子材料。伴随着鞋类产品的发展,鞋底材料质量不断提高,并且新品种层出不穷,主要为合成橡胶、塑料、热塑性弹性体和金属等。
鞋底回弹性是构成成鞋舒适度的一个必要条件之一,特别是针对运动鞋,是其减震性能中极其重要的一个技术参数。
发明内容
本发明的目的在于提供一种高弹缓震橡塑材料,应用该材料的缓震高弹鞋底及其制备工艺,具有高弹性和良好的减震性。为实现上述目的,本发明采用以下技术方案:
一种高弹缓震橡塑材料,按照质量份数,包括以下原料组分:热塑性弹性体:15~25份;乙烯-辛烯嵌段共聚物:15~25份;三元乙丙橡胶:4~8份;乙烯-辛烯共聚物:35~45份;氢化苯乙烯-丁二烯嵌段共聚物:8-12份;硬酯酸:0.4-0.6份;硬酯酸锌:0.5~1.5份;丙酮:0.7~1.2份;交联剂:0.4~0.8份;引发剂:0.5~1.5份。
优选地,该高弹缓震橡塑材料,按照质量份数,包括以下原料组分:热塑性弹性体:20份;乙烯-辛烯嵌段共聚物:20份;三元乙丙橡胶:6份;乙烯-辛烯共聚物:40份;氢化苯乙烯-丁二烯嵌段共聚物:10份;硬酯酸:0.5份;硬酯酸锌:1份;丙酮:0.9份;交联剂:0.6份;引发剂:1份。
本发明还公开了一种缓震高弹鞋底,按照重量份数,包括如下原料组分:乙烯-醋酸乙烯共聚物10~15份;乙烯-辛烯嵌段共聚物30~40份;乙烯-辛烯共聚物10~20份;三元乙丙橡胶10~15份;氧化锌1~1.5份;硬脂酸0.5~1.5份;发泡剂3.5~4.5份;交联剂0.4~0.6份;高弹缓震橡塑材料25~35份。
进一步地,缓震高弹鞋底还包括:耐磨剂10~15份,填充剂5~10份。
本发明还公开了上述缓震高弹鞋底的制备工艺,采用上述缓震高弹鞋底原料,按照以下步骤进行制备:
S1.原料混合,将交联剂和发泡剂混合后待用,将其余原料混合均匀后加入交联剂和发泡剂的混合物,至温度升高到110~120℃,得到混合料;
S2.打薄出片,将混合料打薄若干遍,打薄后出片,出片厚度为1~2mm;
S3.造粒,将出片的混合料投入到造粒机中,控制粒子长度为2.5~3.5mm;
S4.发泡,将造粒机切出的粒子放入发泡模具中,控制模具温度为170~180℃,得到发泡半成品;
S5.硫化成型,将发泡半成品在常温中静置一段时间,再将其放入成型模具中硫化成型得到缓震高弹鞋底。
优选地,步骤S1中,将交联剂和发泡剂混合后待用,另将其余原料混合后倒入密炼机中进行第一阶段密炼,使物料混合均匀;待温度达到105~110℃时,再加入交联剂和发泡剂的混合物,再次启动密炼机进行第二阶段密炼,直到温度升高至110~120℃时,所有原料混合均匀得到密炼好的混合料。
优选地,步骤S2中,将混合料在滚轮机上打薄2遍,打薄后在出片机上进行出片。
优选地,步骤S3中,造粒机的温度为75±3℃,模头温度80±3℃。
优选地,步骤S5中,硫化定型过程中加热温度170~180℃,加热时间500~550秒,冷切时间500~550秒。
由于采用了上述结构,本发明具有如下有益效果:本发明高弹缓震橡塑材料具有良好的高弹性和缓震性,应用在鞋底上,可以有效提高鞋底的回弹性和减震性。本发明鞋底综合性能良好,成本低,适用于制作运动鞋。
具体实施方式
为了使本领域的技术人员更好地理解本发明的技术方案,下面结合具体实施例对本发明作进一步详细的描述。
实施例一
本实施例公开了一种高弹缓震橡塑材料,按照质量份数,原料组分包括:热塑性弹性体:15~25份;乙烯-辛烯嵌段共聚物:15~25份;三元乙丙橡胶:4~8份;乙烯-辛烯共聚物:35~45份;氢化苯乙烯-丁二烯嵌段共聚物:8-12份;硬酯酸:0.4-0.6份;硬酯酸锌:0.5~1.5份;丙酮:0.7~1.2份;交联剂:0.4~0.8份;引发剂:0.5~1.5份。
根据原料组分进行具体材料的选型,如下表1所示。
表1原料组分的材料选型
根据原料的配比,进行表2的配比。
表2原料组分的配比(质量份数)
原料组分/实施组别 | A | B | C | D |
热塑性弹性体 | 20 | 15 | 22 | 25 |
乙烯-辛烯嵌段共聚物 | 20 | 18 | 15 | 25 |
三元乙丙橡胶 | 6 | 5 | 8 | 4 |
乙烯-辛烯共聚物 | 40 | 35 | 45 | 42 |
氢化苯乙烯-丁二烯嵌段共聚物 | 10 | 8 | 9 | 12 |
硬酯酸 | 0.5 | 0.4 | 0.5 | 0.6 |
硬酯酸锌 | 1 | 1.5 | 0.5 | 0.8 |
丙酮 | 0.9 | 1.0 | 1.2 | 0.7 |
交联剂 | 0.6 | 0.4 | 0.8 | 0.8 |
引发剂 | 1 | 0.5 | 0.5 | 1.5 |
实施例二
本实施例公开了一种缓震高弹鞋底,按照重量份数,包括如下原料组分:乙烯-醋酸乙烯共聚物10~15份;乙烯-辛烯嵌段共聚物30~40份;乙烯-辛烯共聚物10~20份;三元乙丙橡胶10~15份;氧化锌1~1.5份;硬脂酸0.5~1.5份;发泡剂3.5~4.5份;交联剂0.4~0.6份;高弹缓震橡塑材料25~35份,还可包括:耐磨剂10~15份,填充剂5~10份。
高弹缓震橡塑材料为实施例一的材料。
根据原料组分进行具体材料的选型,如下表3所示。
表3原料组分的材料选型
原料组分 | 材料选型 |
乙烯-醋酸乙烯共聚物(EVA) | 中国台湾台塑公司:EVA7350VA含量18% |
乙烯-辛烯嵌段共聚物(OBC) | 美国陶氏公司:INFUSE9107 |
乙烯-辛烯共聚物(POE) | 美国陶氏公司:POE8150 |
三元乙丙橡胶(EPDM) | 美国陶氏公司:EPDM3745P |
氧化锌 | 上海白石公司:ZNO102 |
硬脂酸 | 上海白石公司:STE |
发泡剂 | 江苏索普公司:AD |
交联剂 | 阿克苏公司:DCP |
耐磨剂 | 福建泉州三辉:108P |
填充剂 | 福建旭丰:BHS-818T |
根据原料的配比,进行表4的配比。
表4原料组分的配比(质量份数)
原料组分/实施组别 | E | F | G | H |
乙烯-醋酸乙烯共聚物 | 10 | 15 | 12 | 14 |
乙烯-辛烯嵌段共聚物 | 35 | 38 | 30 | 40 |
乙烯-辛烯共聚物 | 10 | 12 | 20 | 15 |
三元乙丙橡胶 | 12 | 15 | 10 | 10 |
氧化锌 | 1.0 | 1.5 | 1.2 | 1.2 |
硬脂酸 | 0.8 | 1.0 | 0.5 | 1.5 |
发泡剂 | 3.5 | 3.8 | 4.0 | 4.5 |
交联剂 | 0.5 | 0.5 | 0.4 | 0.6 |
高弹缓震橡塑材料(表2,A组别) | 25 | 32 | 30 | 35 |
耐磨剂 | 0 | 10 | 15 | 12 |
填充剂 | 0 | 10 | 5 | 8 |
按照如上表4的配方进行缓震高弹鞋底的制备,其制备步骤如下详述。
S1.原料混合,将交联剂和发泡剂混合后待用。将其余原料(乙烯-醋酸乙烯共聚物、乙烯-辛烯嵌段共聚物、乙烯-辛烯共聚物、三元乙丙橡胶、氧化锌、硬脂酸、高弹缓震橡塑材料、耐磨剂、填充剂)混合后倒入密炼机中进行第一阶段密炼,使物料混合均匀。待温度达到105~110℃时,再加入交联剂和发泡剂的混合物,再次启动密炼机进行第二阶段密炼,直到温度升高至110~120℃时,所有原料混合均匀得到密炼好的混合料。
S2.打薄出片,将混合料在滚轮机上打薄若干遍,打薄后在出片机上进行出片,出片厚度为1~2mm。在这一步骤中可根据所需鞋底的规格,进行出片宽度和规格的调整:如依据后段发泡模具长宽规格(如后段发泡模具长宽规格为1200mm×660mm),调整出片机出片宽度为550±50mm,调整切刀频率以控制出片长度为1100±50mm。
S3.造粒,将出片的混合料投入到造粒机中,造粒机的温度为75±3℃,模头温度80±3℃,调整切刀步骤以控制粒子长度为2.5~3.5mm。
S4.发泡,将造粒机切出的粒子放入发泡模具中,控制模具温度为170~180℃,加热时间500秒后,得到发泡半成品。
S5.硫化成型,将发泡半成品在常温中静置24小时后,再将其放入成型模具中硫化成型,控制硫化定型过程中加热温度170~180℃,加热时间500~550秒,冷切时间500~550秒,即得到缓震高弹鞋底。
针对本实施例G组配比得到的缓震高弹鞋底材料通过以上方法制备得到缓震高弹鞋底,进行以下实验测试。
1、鞋底硬度、耐磨性测试
采用标准ASTM D 2240方法使用C型(球形)测试鞋底硬度。测试得到硬度值为49C。
采用标准DIN53516GB9867方法,通过DIN磨耗试验机测定鞋底的耐磨性能,得到鞋底的耐磨(DIN)为180mm3。
2、永久压缩歪度
采用符合标准GB/T 7759的永久压缩歪度测试仪,对鞋底进行静态压缩试验,得到其压缩歪度(即压缩变形率)为28%。
3、回弹性测试
依据标准GB/T1681(在标准试验温度条件下,将试样在夹具上固定,对试样进行不少于三次不多于七次的连续冲击,作为机械调节。机械调节结束后,立即以相同的速度对试样进行三次冲击,并记下三次读数。将三次回弹数值折算成百分数形式即表达回弹值,它们的中值就是试验的回弹值)对材料进行回弹测试,得到回弹率为70%。
4、缓震值
依据标准GB/T24152-2009(将试样固定到测试平台,用一定重量的冲击头自由落体模拟人体落地过程,通过冲击头部位的传感器采集冲击过程的峰值加速度,峰值加速度比上重力加速度即为减震G值,可以用来反应材料在应对冲击力的缓震效果)对材料缓震性能进行测试,得到缓震G值为四组(9.60/9.67/9.73/9.79)。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。
Claims (8)
1.一种缓震高弹鞋底,其特征在于,按照质量份数,包括如下原料组分:
乙烯-醋酸乙烯共聚物10~15份;
乙烯-辛烯嵌段共聚物30~40份;
乙烯-辛烯共聚物10~20份;
三元乙丙橡胶10~15份;
氧化锌1~1.5份;
硬脂酸0.5~1.5份;
发泡剂 3.5~4.5份;
交联剂0.4~0.6份;
高弹缓震橡塑材料25~35份;
所述的高弹缓震橡塑材料按照质量份数,包括以下原料组分:热塑性弹性体:15~25份;乙烯-辛烯嵌段共聚物:15~25份;三元乙丙橡胶:4~8份;乙烯-辛烯共聚物:35~45份;氢化苯乙烯-丁二烯嵌段共聚物:8-12份;硬酯酸:0.4-0.6份;硬酯酸锌:0.5~1.5份;丙酮:0.7~1.2份;交联剂:0.4~0.8份;引发剂:0.5~1.5份。
2.如权利要求1所述的缓震高弹鞋底,其特征在于,所述的高弹缓震橡塑材料,按照质量份数,包括以下组分:
热塑性弹性体:20份;乙烯-辛烯嵌段共聚物:20份;三元乙丙橡胶:6份;乙烯-辛烯共聚物:40份;氢化苯乙烯-丁二烯嵌段共聚物:10份;硬酯酸:0.5份;硬酯酸锌:1份;丙酮:0.9份;交联剂:0.6份;引发剂:1份。
3.如权利要求1所述的缓震高弹鞋底,其特征在于,还包括以下质量份数的组分:耐磨剂10~15份,填充剂5~10份。
4.一种缓震高弹鞋底的制备工艺,其特征在于,采用权利要求1或2或3所述的缓震高弹鞋底原料,按照以下步骤进行制备:
S1.原料混合,将交联剂和发泡剂混合后待用,将其余原料混合均匀后加入交联剂和发泡剂的混合物,至温度升高到110~120℃,得到混合料;
S2. 打薄出片,将混合料打薄若干遍,打薄后出片,出片厚度为1~2mm;
S3. 造粒,将出片的混合料投入到造粒机中,控制粒子长度为2.5~3.5mm;
S4.发泡,将造粒机切出的粒子放入发泡模具中,控制模具温度为170~180℃,得到发泡半成品;
S5.硫化成型,将发泡半成品在常温中静置一段时间,再将其放入成型模具中硫化成型得到缓震高弹鞋底。
5.如权利要求4所述的缓震高弹鞋底的制备工艺,其特征在于,步骤S1中,将交联剂和发泡剂混合后待用,另将其余原料混合后倒入密炼机中进行第一阶段密炼,使物料混合均匀;待温度达到105~110℃时,再加入交联剂和发泡剂的混合物,再次启动密炼机进行第二阶段密炼,直到温度升高至110~120℃时,所有原料混合均匀得到密炼好的混合料。
6.如权利要求4所述的缓震高弹鞋底的制备工艺,其特征在于,步骤 S2中,将混合料在滚轮机上打薄2遍,打薄后在出片机上进行出片。
7.如权利要求4所述的缓震高弹鞋底的制备工艺,其特征在于,步骤 S3中,造粒机的温度为75±3℃,模头温度80±3℃。
8.如权利要求4所述的缓震高弹鞋底的制备工艺,其特征在于,步骤 S5中,硫化定型过程中加热温度170~180℃,加热时间500~550秒,冷切时间500~550秒。
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