CN106893190A - 一种高压缩歪可注射和模压成型的eva发泡颗粒 - Google Patents

一种高压缩歪可注射和模压成型的eva发泡颗粒 Download PDF

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CN106893190A
CN106893190A CN201710242159.8A CN201710242159A CN106893190A CN 106893190 A CN106893190 A CN 106893190A CN 201710242159 A CN201710242159 A CN 201710242159A CN 106893190 A CN106893190 A CN 106893190A
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rubber
askew
injectable
eva
expanded beads
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王若愚
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Quanzhou Sansheng Rubber Plastic Technology Co Ltd
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • 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
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853—Vinylacetate
    • 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
    • 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
    • C08J2423/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/14—Applications used for foams
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

一种高压缩歪可注射和模压成型的EVA发泡颗粒，包括按质量百分比计的材料结构和制备工艺，材料结构由橡塑组合物和橡塑助剂两大组分组成，橡塑组合物占总结构的97~88%并包括：EVA 72~59%、POE 7~8%、三元乙丙胶7~8%、聚氨酯橡胶（MPU）14~25%；橡塑助剂占总结构的3~12%并包括：填充剂0~71%、活性剂30~9%、硫化活性剂15~6%、硫化促进剂10~5%、交联剂20~5%、发泡剂25~15%；制备工艺步骤包括：先将橡塑组合物填充剂、活性剂、硫化活性剂、硫化促进剂投入到密炼机中密炼，密炼温度70~100°C，密炼时间8‑15min；再投入交联剂、发泡剂混炼3‑5min成混合胶料，最后将混合胶料造粒既得本发明的发泡颗粒。

Description

一种高压缩歪可注射和模压成型的EVA发泡颗粒
所属技术领域：
本发明涉及一种EVA发泡颗粒，特别涉及一种高压缩歪可注射和模压成型的EVA发泡颗粒，属高分子聚合物技术领域。
背景技术：
橡胶制成品是一种具有高弹性、高拉伸性、高绝缘性的高分子化合物制品，分为天然橡胶与合成橡胶；EVA是乙烯—醋酸乙烯酯共聚物的简称，EVA制品除了具备如橡胶的良好弹性外，与橡胶有所不同的还有柔性、耐低温性能、透明性、表面光泽性等，EVA树脂所做的制品在-50℃下仍然能够具有较好的可挠性，EVA制品很突出的特点是与填料的掺混性能、着色性能，易热压、剪裁、涂胶、贴合的良好加工性，这些特点远优于橡胶；聚氨酯，具有良好的耐油性、韧性、耐磨性、耐老化性和粘合性以及可降解性，还具有适应－50～150℃较宽温度范围，而橡胶和EVA所具备的高弹性和高拉伸性则是聚氨酯所不及的。
随着科技的发展和高分子材料应用领域的不断延伸，以及传统应用领域对制品性能要求的不断提高，需要同时具备橡胶、EVA、聚氨酯三种材料性能的高弹性、高拉伸性、良好的柔性、良好的加工性能、高抗高温性能的制品需求日趋强烈，因此，如何将这三种材料混熔交联成一体，便给业界提出了一个崭新的课题。
发明内容：
为了融合上述三种材料的优良性能，本发明公开一种高压缩歪可注射和模压成型的EVA发泡颗粒。
本发明所采用的技术方案是：一种高压缩歪可注射和模压成型的EVA发泡颗粒，包括按质量百分比计的材料结构和制备工艺，材料结构由橡塑组合物和橡塑助剂两大组分组成，橡塑组合物组分占材料结构的97~88%并包括：乙烯-醋酸乙烯酯共聚物（EVA）72~59%、乙烯-辛烯共聚物（POE）7~8%、三元乙丙胶7~8%、聚氨酯橡胶（MPU）14~25%；橡塑助剂组分占材料结构的3~12%并包括：填充剂0~71%、活性剂30~9%、硫化活性剂15~6%、硫化促进剂10~5%、交联剂20~5%、发泡剂25~15%；制备工艺步骤包括：
（1）、将配方量橡塑组合物组分和助剂组分中的填充剂、活性剂、硫化活性剂、硫化促进剂投入到密炼机中密炼，密炼温度70~100°C，密炼时间8-15min；
（2）、将交联剂、发泡剂投入到步骤1再混炼3-5min成混合胶料；
（3）、将步骤2的混合胶料投入到螺杆挤出造粒机造粒既得高压缩歪可注射和模压成型的EVA发泡颗粒。
填充剂采用的是滑石粉，活性剂采用氧化锌，硫化活性剂采用硬脂酸锌，硫化促进剂采用硬脂酸，交联剂采用DCP和BIPB的其中一种，发泡剂采用偶氮二甲酰胺。
本发明的有益效果是：本高压缩歪可注射和模压成型的EVA发泡颗粒的制成品具有折后不起皱、回弹性能高、抗撕裂性能强的特点，可广泛应用于汽车、摩托车、高端箱包、中高端鞋底等。
具体实施方式：
一种高压缩歪可注射和模压成型的EVA发泡颗粒，包括按质量百分比计的材料结构和制备工艺，材料结构由橡塑组合物和橡塑助剂两大组分组成，橡塑组合物组分占材料结构的97~88%并包括：乙烯-醋酸乙烯酯共聚物（EVA）72~59%、乙烯-辛烯共聚物（POE）7~8%、三元乙丙胶7~8%、聚氨酯橡胶（MPU）14~25%；橡塑助剂组分占材料结构的3~12%并包括：填充剂0~71%、活性剂30~9%、硫化活性剂15~6%、硫化促进剂10~5%、交联剂20~5%、发泡剂25~15%；制备工艺步骤包括：
（1）、将配方量橡塑组合物组分和助剂组分中的填充剂、活性剂、硫化活性剂、硫化促进剂投入到密炼机中密炼，密炼温度70~100°C，密炼时间8-15min后捏合成一团；
（2）、将交联剂、发泡剂投入到步骤1再混炼3-5min成混合胶料；
（3）、将步骤2的混合胶料投入到螺杆挤出造粒机造粒既得高压缩歪可注射和模压成型的EVA发泡颗粒。
填充剂采用的是滑石粉，活性剂采用氧化锌，硫化活性剂采用硬脂酸锌，硫化促进剂采用硬脂酸，交联剂采用DCP和BIPB的其中一种，发泡剂采用偶氮二甲酰胺。
实施例：
橡塑组合物组分占材料结构的91.5%并包括：
乙烯-醋酸乙烯酯共聚物（EVA） 70%
聚氨酯橡胶（MPU） 20%
乙烯-辛烯共聚物（POE） 5%
三元乙丙胶 5 %；
橡塑助剂组分占材料结构的8.5%并包括：
填充剂 53.78%
活性剂 10.75%
硫化活性剂 10.75%
硫化促进剂 5.37%
交联剂 6.45%
发泡剂 12.9%
本实施例所体现的以乙烯-醋酸乙烯酯共聚物（EVA）和聚氨酯橡胶（MPU）的特性。制备步骤是：先将配方量的橡塑组合物、流动助剂、活性剂、硫化活性剂、硫化促进剂投入到密炼机中密炼，混合10min后加入发泡剂和交联剂，再混合5min，密炼机温度100℃，再经开炼、挤出切粒后成高压缩歪可注射和模压成型的EVA发泡颗粒。
将高压缩歪可注射和模压成型的EVA发泡颗粒投入到站位式注射成型机的料斗内，开启注射成型机对高压缩歪可注射和模压成型的EVA发泡颗粒加温加压，使其成紊流态胶料，此过程的温度控制在100℃，当高压缩歪可注射和模压成型的EVA发泡颗粒成为可以注射的紊流态胶料时，将该紊流态胶料注射入模具的模具腔内，硫化该模具腔内的紊流态胶料，硫化温度为175℃，硫化时间300~400秒，胶料进行硫化的同时发泡。达到设定的硫化时间后脱模为成品高压缩歪可注射和模压成型的EVA发泡制品。

Claims (2)

1.一种高压缩歪可注射和模压成型的EVA发泡颗粒，其特征是：包括按质量百分比计的材料结构和制备工艺，材料结构由橡塑组合物和橡塑助剂两大组分组成，橡塑组合物组分占材料结构的97~88%并包括： 乙烯-醋酸乙烯酯共聚物（EVA）72~59%、乙烯-辛烯共聚物（POE）7~8%、三元乙丙胶7~8%、聚氨酯橡胶（MPU）14~25%；橡塑助剂组分占材料结构的3~12%并包括：填充剂0~71%、活性剂30~9%、硫化活性剂15~6%、硫化促进剂10~5%、交联剂20~5%、发泡剂25~15%；制备工艺步骤包括：
（1）、将配方量橡塑组合物组分和橡塑助剂组分中的填充剂、活性剂、硫化活性剂、硫化促进剂投入到密炼机中密炼，密炼温度70~100°C，密炼时间8-15min；
（2）、将交联剂、发泡剂投入到步骤1再混炼3-5min成混合胶料；
（3）、将步骤2的混合胶料投入到螺杆挤出造粒机造粒既得高压缩歪可注射和模压成型的EVA发泡颗粒。
2.根据权利要求1所述的一种高压缩歪可注射和模压成型的EVA发泡颗粒，其特征是：所述的填充剂采用的是滑石粉，活性剂采用氧化锌，硫化活性剂采用硬脂酸锌，硫化促进剂采用硬脂酸，交联剂采用DCP和BIPB的其中一种，发泡剂采用偶氮二甲酰胺。
CN201710242159.8A 2017-04-14 2017-04-14 一种高压缩歪可注射和模压成型的eva发泡颗粒 Pending CN106893190A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108948722A (zh) * 2018-07-24 2018-12-07 泉州泰亚鞋业有限公司 高弹耐疲劳发泡鞋材及其制造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106009244A (zh) * 2016-07-31 2016-10-12 谢新莉 一种新型鞋制品材料及制备方法
CN106243470A (zh) * 2016-07-31 2016-12-21 谢新莉 一种耐磨鞋制品材料及制备方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106009244A (zh) * 2016-07-31 2016-10-12 谢新莉 一种新型鞋制品材料及制备方法
CN106243470A (zh) * 2016-07-31 2016-12-21 谢新莉 一种耐磨鞋制品材料及制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108948722A (zh) * 2018-07-24 2018-12-07 泉州泰亚鞋业有限公司 高弹耐疲劳发泡鞋材及其制造方法

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