CN110591215A - 一种运动鞋用超轻eva中底材料及其制造方法 - Google Patents
一种运动鞋用超轻eva中底材料及其制造方法 Download PDFInfo
- Publication number
- CN110591215A CN110591215A CN201910890097.0A CN201910890097A CN110591215A CN 110591215 A CN110591215 A CN 110591215A CN 201910890097 A CN201910890097 A CN 201910890097A CN 110591215 A CN110591215 A CN 110591215A
- Authority
- CN
- China
- Prior art keywords
- foaming
- parts
- agent
- zone
- ultra
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
-
- 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
- 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
- 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
- C08J9/08—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 carbon dioxide
-
- 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
- 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
- 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
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- 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
- 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
- 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
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
- C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- 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
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- 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
- C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2425/02—Homopolymers or copolymers of hydrocarbons
- C08J2425/04—Homopolymers or copolymers of styrene
- C08J2425/08—Copolymers of styrene
- C08J2425/10—Copolymers of styrene with conjugated dienes
-
- 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
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
Abstract
本发明公开了一种运动鞋用超轻EVA中底材料及其制造方法,该中底材料由物料经共混发泡后制得,所述的物料包括以下重量份的组分:线性低密度聚乙烯5‑15份,苯乙烯类树脂5‑20份,乙烯乙酸乙烯酯共聚物45‑60份,乙烯甲基丙烯酸共聚物5‑20份,接枝剂0.5‑2.0份,润滑剂0.3‑1.0份,交联剂0.8‑1.2份,发泡剂3.5‑5.0份,发泡助剂1.0‑2.0份。将物料混合均匀后造粒,经发泡设备在注入模具成型后得到超轻EVA中底材料。本发明提供的运动鞋用中底材料,能够同时实现轻量化和高撕裂强度,具有很好的市场前景。
Description
技术领域
本发明涉及鞋类制造技术领域,具体涉及一种运动鞋用超轻EVA中底材料及其制造方法。
背景技术
研究表明(陈鹏,曲风,运动鞋科技进展综述,山西体育科技报2008(3)),跑步过程中,膝盖所受到的冲击力大约是体重的3-5倍,而鞋子的重量每增加1克,人每跑100米就会多消耗8%的体能,鞋子每减轻1克重量,就相当于减轻560克重力负担。一双鞋子的重量主要取决于鞋底的重量,而目前市场上的鞋底材料密度主要集中在0.2-0.3g/cm3。如果能将鞋底的重量降低至0.11g/cm3,鞋底的重量就能够降低50%以上,从而让穿着者在跑步过程中的重力负担大大的降低,能够极大的提升穿着舒适感,同时提升运动成绩。
鞋子的穿着使用过程是一个动态的运动过程,因此,运动鞋鞋底使用的中底材料必须能够满足一定的力学指标。通常,材料的力学性能与材料的密度成反比,如何在低密度的情况下,使运动鞋鞋底材料达到所需的力学性能,是当前行业研究的重点和难点。
目前,市售的中底材料大多数是基于乙烯基类聚合物交联发泡制备获得,在低密度下拉伸、撕裂等力学性能无法满足运动鞋鞋底所需的力学标准。
发明内容
有鉴于上述,本发明提供一种能够同时实现轻量化和高撕裂强度的运动鞋用超轻EVA中底材料及其制造方法。该材料同时具有低密度和优异的力学性能,密度低于0.11g/cm3,拉伸强度大于2.5MPa,延伸率大于250%,撕裂大于5.0N/mm,可大大减轻运动鞋穿着者跑步的重力负担,提升消费者的穿着舒适感。
为实现上述目的,本发明采用如下技术方案:
一种运动鞋用超轻EVA中底材料,由物料经共混发泡制得,所述的物料包括如下重量份的组分:
线性低密度聚乙烯5-15份,
苯乙烯类树脂5-20份,
乙烯乙酸乙烯酯共聚物45-60份,
乙烯甲基丙烯酸共聚物5-20份,
接枝剂0.5.-2.0份,
润滑剂0.3-1.0份,
交联剂0.8-1.2份,
发泡剂3.5-5.0份,
发泡助剂1.0-2.0份。
所述的线性低密度聚乙烯(LLDPE)硬度应在95shore A以上,熔融指数2-5g/10min,优选住友CU2002牌号。LLDPE在结构上不同于一般的低密度聚乙烯、因为不存在长支链,通常由乙烯和高级α-烯烃共聚生成,LLDPE具有比一般LDPE更窄的分子量分布,在具体的产品应用上,具备优异的抗环境应力开裂性,高撕裂性,耐低温冲击性。
所述的苯乙烯类树脂(K-Resin)选自苯乙烯丁二烯共聚物(K树脂),硬度应在98shoreA以上,优选众和SL803牌号。K树脂是以苯乙烯、丁二烯为单体,采用阴离子聚合成的一种嵌段共聚物,其中苯乙烯结构提供了材料刚性,丁二烯结构则提供了材料的韧性,作增韧材料,可以提升材料的韧性;K树脂是一种超硬的塑料,添加适量的K树脂,能够提升配方的基础硬度,能够保证高发泡倍率制品硬度不会偏软。
所述的乙烯-乙酸乙烯酯共聚物(EVA)的VA含量为18%,极性高,加工性能好。优选杜邦EVA 460。
所述的乙烯甲基丙烯酸共聚物(EAA)硬度50shore D以上,熔融指数0.5-5.0g/10min,优选杜邦514D。EAA带有羧基反应性官能团,能与其他成分反应提供离子交联,有着与其他材料粘结的倾向,可以作为一种优异的相容剂。
所述的接枝剂为马来酸酐(MAH),本发明采用接枝剂进行接枝,以利于解决聚合物间的相容性问题,聚合物相容性好,产品的力学性能也更优异。
所述的润滑剂为硬脂酸、硬脂酸锌、硬脂酸钙、聚乙烯蜡中的一种或者几种,优选硬脂酸及硬脂酸锌两种,能够同时兼顾内外润滑。
所述的发泡剂为偶氮二甲酰胺(AC)、4,4’氧代双苯磺酰肼(OBSH)、小苏打中的一种或者几种。优选AC,发气量大,分散性能好。
所述的发泡助剂为氧化锌、氧化镁、碳酸锌中的一种或者几种,优选氧化锌,能够有效的调整体系酸碱度及发泡温度。
所述的交联剂为过氧化二异丙苯(DCP)、1,4-双叔丁基过氧化丙基苯(BIPB)、过氧化苯甲酰(BPO)中的一种,优选BIPB,交联效率高,异味少。具体的,本发明包括0.8-1.2重量份的交联剂,其能够引发交联、接枝等作用。本发明通过在混炼过程中加入引发马来酸酐和聚合物接枝的交联剂,使得共混体系中每种聚合物分子链都接枝上部分马来酸酐,即聚合物各自有部分接枝为LLDPE-g-MAH、Kresin-g-MAH、EVA-g-MAH、EAA-g-MAH等组成,因此,体系不是单一的相容物存在,而是多种相容结构共同存在,从而降低了聚合物的相界面的界面张力,大大提高了各个聚合物之间的相容性。
上述超轻EVA中底材料的制造方法如下:将发泡剂和一部分交联剂作为第一组分,润滑剂、发泡助剂为第二组分,线性低密度聚乙烯、苯乙烯类树脂、乙烯乙酸乙烯酯共聚物、乙烯甲基丙烯酸共聚物、接枝剂和余下的交联剂作为第三组分,然后按照以下步骤实施:
(1)先将第三组分采用高速混炼机预分散后,倒入双螺杆造粒机,打开机器,第一、二、三、四、五区温度分别设为90、180、180、180、150℃,造粒后经过水冷烘干,得到混炼胶粒;
(2)将混炼胶粒与第二组分倒入密炼机,打开机器,待升温至115℃,倒入第一组分,混合好的物料倒出,经单螺杆造粒机造粒,第一、二、三、四区温度设为75、80、85、90℃,得到待发泡胶粒;
(3)将待发泡胶粒倒入注塑发泡成型机内进行化学发泡成型,料枪温度第一、二、三、四区温度分别设为85、90、95、100℃,发泡成型温度为170-180℃,料量根据模具设定,硫化时间为600s,得到超轻EVA中底材料。
进一步的,在步骤(3)发泡成型后,将发泡成型的发泡材料进行烘烤,利于提高材料尺寸的稳定性,所述烘烤条件具体为:将烘箱温度第一、二、三、四区温度分别设为100、90、80、65℃,转速为90转每分钟,全程30-40分钟,得到超轻EVA中底材料。
与现有技术相比,本发明提供的发泡物料采用的聚合物硬度高,能够保证发泡后产品硬度不会偏软。通过马来酸酐接枝的方法,在不同聚合物分子链上接枝实现多种相容组分存在,降低了聚合物的相界面的界面张力,大大提高了各个聚合物之间的相容性。物料中还混入了适量的乙甲基烯丙烯酸类共聚物,其本身也是一种性能良好的相容剂,能够进一步提升不同聚合物间的相容性。
综上所述,本发明藉由提供有合适配比的可发泡组合物进行发泡,即可产出兼具低密度且力学性能良好等优点的EVA中底材料。相较于现有大多数市售中底材料,本发明提供的发泡材料同时具有低密度和优异的力学性能,密度低于0.11g/cm3,拉伸强度大于2.5MPa,延伸率大于250%,裤型撕裂大于5.0N/mm,剥离强度20N/cm,可大大减轻运动鞋穿着者跑步的重力负担,提升消费者的穿着舒适感,同时产品强度高,不易损坏。
具体实施方式
为使本发明及其所要主张的申请专利范围能被充分地理解,以下将示范本发明的较佳实施例,但并不作为对本发明的限定。
实施例1-5运动鞋用超轻EVA中底材料及其制造方法
实施例1-5的EVA中底材料如表1所示,依据表1的配方组分,用量,将发泡剂和一部分交联剂(BIPB-1)作为第一组分,润滑剂、发泡助剂为第二组分,剩下的交联剂(BIPB-2),接枝剂及聚合物树脂为第三组分。
然后按照以下步骤实施:
(1)先将第三组分的物料采用高速混炼机预分散后,倒入双螺杆造粒机,打开机器,第一、二、三、四、五区温度分别为90、180、180、180、150℃。造粒后经过水冷烘干,得到混炼胶粒;
(2)将混炼胶粒与第二组分倒入密炼机,打开机器,待升温至115℃,倒入第一组分,混合好的物料倒出,经单螺杆造粒机造粒,第一、二、三、四区温度为75、80、85、90℃,得到带发泡胶粒;
(3)将待发泡胶粒倒入注塑发泡成型机内进行化学发泡成型,料枪温度第一、二、三、四区温度分别为85、90、95、100℃,所述的发泡成型温度为170-180℃,具体的,设定温度为175℃,料量根据模具设定,硫化时间为600s;
(4)将发泡成型的发泡材料进行烘烤,利于提高材料尺寸稳定性,所述烘烤条件具体为:将烘箱温度第一、二、三、四区温度分别设为100、90、80、65℃,转速为90转每分钟,全程约30-40分钟。
实施例中涉及的配方组分均为市售产品,所述的制备设备为常用的橡塑加工设备。
表1实施例和对比例的原料及其重量份数
对比例1-3是在实施例5基础上作微调,在同一硬度范围内测试制品的性能。
表2实施例与对比例制备的发泡材料的部分性能对比
检测项目 | 实施例1 | 实施例2 | 实施例3 | 实施例4 | 实施例5 | 对比例1 | 对比例2 | 对比例3 |
硬度Asker C | 55 | 54 | 53 | 54 | 54 | 54 | 53 | 54 |
密度g/cm3 | 0.105 | 0.106 | 0.102 | 0.108 | 0.107 | 0.108 | 0.143 | 0.109 |
拉伸强度MPa | 3.2 | 2.5 | 2.7 | 2.8 | 3.1 | 2.5 | 2.8 | 1.6 |
断裂延伸率% | 330 | 280 | 320 | 280 | 290 | 240 | 270 | 180 |
裤型撕裂N/mm | 5.6 | 6.2 | 5.5 | 4.8 | 6.5 | 5.5 | 6.8 | 4.2 |
剥离强度N/cm | 19 | 22 | 21 | 17 | 22 | 19 | 22 | 15 |
由表2可得知,实施例1-5的产品密度低于0.11g/cm3,,但实施例2、3、5的撕裂性能相对更优。由以上数据可知,本发明制备的超轻EVA材料,其密度低于0.11g/cm3,拉伸强度大于2.5MPa,延伸率大于250%,裤型撕裂大于5.0N/mm,剥离强度20N/cm。
通过对比例1和实施例5可以看出,如果选用普通的低密度聚乙烯,产品的撕裂强度明显比选用线性低密度聚乙烯产品差。
通过对比例2和实施例5可以看出,如果不选用适量的K树脂而用常规的EVA材料替代发泡,配方基础硬度较低,发泡倍率越高,制品硬度越低,密度也会越小,因此,如果要做到与其他配方同一硬度范围,需要降低发泡倍率,即制品密度会相对比较大。
通过对比例3和实施例5可以看出,不添加马来酸酐接枝,从测试结果上看,制品的拉伸强度、延伸率、撕裂等性能明显变差。
本发明为实现产品低密度,高撕裂性能,并用了线性低密度聚乙烯和K树脂材料,通过双螺杆造粒机混炼,在交联剂作用下把马来酸酐接入不同高聚物分子链上,形成多种相容组分,能够明显提升制品的各项力学性能,提供的中底材料同时具有低密度和优异的力学性能,,可大大减轻运动鞋穿着者跑步的重力负担,提升消费者的穿着舒适感,同时产品强度高,不易损坏。
Claims (10)
1.一种运动鞋用超轻EVA中底材料,由物料经共混发泡制得,其特征在于:所述的物料包括如下重量份的组分:
线性低密度聚乙烯5-15份,
苯乙烯类树脂5-20份,
乙烯乙酸乙烯酯共聚物45-60份,
乙烯甲基丙烯酸共聚物5-20份,
接枝剂0.5.-2.0份,
润滑剂0.3-1.0份,
交联剂0.8-1.2份,
发泡剂3.5-5.0份,
发泡助剂1.0-2.0份。
2.根据权利要求1所述的一种运动鞋用超轻EVA中底材料,其特征在于:所述的线性低密度聚乙烯的硬度超过95 shore A的线性低密度聚乙烯产品,熔融指数2-5g/10min。
3.根据权利要求1所述的一种运动鞋用超轻EVA中底材料,其特征在于:所述的苯乙烯类树脂选自苯乙烯丁二烯共聚物,硬度高于98 shoreA。
4.根据权利要求1所述的一种运动鞋用超轻EVA中底材料,其特征在于:所述的乙烯-乙酸乙烯酯共聚物的VA含量为18%。
5.根据权利要求1所述的一种运动鞋用超轻EVA中底材料,其特征在于:所述的乙烯甲基丙烯酸共聚物的硬度50 shore D以上,熔融指数0.5-5.0g/10min。
6.根据权利要求1所述的一种运动鞋用超轻EVA中底材料,其特征在于:所述的接枝剂为马来酸酐。
7.根据权利要求1所述的一种运动鞋用超轻EVA中底材料,其特征在于:所述的润滑剂选自硬脂酸、硬脂酸锌、硬脂酸钙、聚乙烯蜡中的一种或多种组合,所述的交联剂选自DCP、BIPB中的一种。
8.根据权利要求1所述的一种运动鞋用超轻EVA中底材料,其特征在于:所述的发泡剂选自偶氮二甲酰胺、4,4’氧代双苯磺酰肼、小苏打中的一种或者多种组合,所述的发泡助剂选自氧化锌、碳酸锌、氧化镁中的一种或多种组合。
9.如权利要求1-8任一所述的一种运动鞋用超轻EVA中底材料的制造方法,其特征在于:将发泡剂和一部分交联剂作为第一组分,润滑剂、发泡助剂为第二组分,线性低密度聚乙烯、苯乙烯类树脂、乙烯乙酸乙烯酯共聚物、乙烯甲基丙烯酸共聚物、接枝剂和余下的交联剂作为第三组分,然后按照以下步骤实施:
(1)先将第三组分采用高速混炼机预分散后,倒入双螺杆造粒机,打开机器,第一、二、三、四、五区温度分别设为 90、180、180、180、150℃,造粒后经过水冷烘干,得到混炼胶粒;
(2)将混炼胶粒与第二组分倒入密炼机,打开机器,待升温至115℃,倒入第一组分,混合好的物料倒出,经单螺杆造粒机造粒,第一、二、三、四区温度设为75、80、85、90℃,得到待发泡胶粒;
(3)将待发泡胶粒倒入注塑发泡成型机内进行化学发泡成型,料枪温度第一、二、三、四区温度分别设为85、90、95、100℃,发泡成型温度为170-180℃,料量根据模具设定,硫化时间为600s,得到超轻EVA中底材料。
10.根据权利要求9所述的一种运动鞋用超轻EVA中底材料的制造方法,其特征在于:步骤(3)发泡成型后,将发泡成型的发泡材料进行烘烤,所述烘烤条件具体为:将烘箱温度第一、二、三、四区温度分别设为100、90、80、65℃,转速为90转每分钟,全程30-40分钟,得到超轻EVA中底材料。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910890097.0A CN110591215A (zh) | 2019-09-20 | 2019-09-20 | 一种运动鞋用超轻eva中底材料及其制造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910890097.0A CN110591215A (zh) | 2019-09-20 | 2019-09-20 | 一种运动鞋用超轻eva中底材料及其制造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN110591215A true CN110591215A (zh) | 2019-12-20 |
Family
ID=68861448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910890097.0A Pending CN110591215A (zh) | 2019-09-20 | 2019-09-20 | 一种运动鞋用超轻eva中底材料及其制造方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110591215A (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111675847A (zh) * | 2020-06-29 | 2020-09-18 | 安踏(中国)有限公司 | 一种轻质极弹耐疲劳发泡材料及其制备方法 |
CN112812413A (zh) * | 2020-12-31 | 2021-05-18 | 浙江万马高分子材料集团有限公司 | 抗铜氧化包覆材料及其制备方法和应用 |
CN113698658A (zh) * | 2021-09-22 | 2021-11-26 | 莆田市涵江怡丰鞋业有限公司 | 一种基于eva材料的抗裂鞋底及其制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106905599A (zh) * | 2017-04-21 | 2017-06-30 | 安踏(中国)有限公司 | 一种轻质高弹eva复合发泡材料及其制备方法和应用 |
CN109021378A (zh) * | 2018-09-20 | 2018-12-18 | 安踏(中国)有限公司 | 一种运动鞋用低密度发泡材料、其制备方法及其应用 |
CN109251511A (zh) * | 2018-09-20 | 2019-01-22 | 安踏(中国)有限公司 | 一种运动鞋用吸震发泡材料、其制备方法及其应用 |
-
2019
- 2019-09-20 CN CN201910890097.0A patent/CN110591215A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106905599A (zh) * | 2017-04-21 | 2017-06-30 | 安踏(中国)有限公司 | 一种轻质高弹eva复合发泡材料及其制备方法和应用 |
CN109021378A (zh) * | 2018-09-20 | 2018-12-18 | 安踏(中国)有限公司 | 一种运动鞋用低密度发泡材料、其制备方法及其应用 |
CN109251511A (zh) * | 2018-09-20 | 2019-01-22 | 安踏(中国)有限公司 | 一种运动鞋用吸震发泡材料、其制备方法及其应用 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111675847A (zh) * | 2020-06-29 | 2020-09-18 | 安踏(中国)有限公司 | 一种轻质极弹耐疲劳发泡材料及其制备方法 |
CN112812413A (zh) * | 2020-12-31 | 2021-05-18 | 浙江万马高分子材料集团有限公司 | 抗铜氧化包覆材料及其制备方法和应用 |
CN113698658A (zh) * | 2021-09-22 | 2021-11-26 | 莆田市涵江怡丰鞋业有限公司 | 一种基于eva材料的抗裂鞋底及其制备方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106905599B (zh) | 一种轻质高弹eva复合发泡材料及其制备方法和应用 | |
CN104231419B (zh) | 高减震乙烯‑醋酸乙烯酯橡胶发泡鞋用材料及其制备方法 | |
CN106279860B (zh) | 一种发泡鞋底及其制备方法和鞋子 | |
CN105175975B (zh) | 一种鞋用发泡组合物及其制备方法 | |
CN102532675B (zh) | 一种鞋用发泡材料 | |
CN109111720B (zh) | 一种超轻高回弹etpu复合减震鞋中底材料及其成型方法 | |
CN110591215A (zh) | 一种运动鞋用超轻eva中底材料及其制造方法 | |
CN104151663A (zh) | 一种eva复合发泡材料及其制备方法 | |
CN113881130B (zh) | 一种高耐磨的鞋用eva发泡材料及其制备方法 | |
US6528550B1 (en) | Crosslinked foam of ethylene vinyl acetate copolymer and acid copolymer | |
CN105566730A (zh) | 一种聚乙酸乙烯酯改性发泡体 | |
US10221310B2 (en) | Composition and process of manufacture for a shoe sole component for footwear | |
CN107082943A (zh) | 一种丁腈橡胶改性的eva发泡材料及其制造方法 | |
CN110982166A (zh) | 一种高弹性耐磨eva发泡鞋材及其制备方法 | |
CN110551337A (zh) | Eva与tpu熔融共混制备弹性体合金及其组合物发泡材料 | |
CN112920501B (zh) | 尼龙弹性体复合材料泡沫及其制备方法 | |
CN110903629A (zh) | 一种高弹性耐磨聚氨酯发泡鞋材及其制备方法 | |
CN111808357B (zh) | 一种运动鞋底用极轻质耐磨低压缩高回弹复合发泡材料及其制备方法 | |
CN111393736A (zh) | 一种珠光白高透光发泡中底材料、其制备方法及运动鞋 | |
CN110204822B (zh) | 一种eva发泡材料及其制备方法 | |
KR102097400B1 (ko) | 신발 중창용 조성물 및 이를 이용한 신발 중창의 제조방법 | |
CN106432887A (zh) | 一种聚烯烃发泡母粒的组成及制备方法和用途 | |
CN108892853A (zh) | 一种抗热收缩橡塑共混发泡中底及其配方 | |
CN106009244A (zh) | 一种新型鞋制品材料及制备方法 | |
CN110003561B (zh) | 用于制备发泡材料的组合物、发泡材料及其制备方法、发泡材料制品和应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191220 |
|
RJ01 | Rejection of invention patent application after publication |