CN101376733B - 一种汽车用吸震热塑性弹性体材料及其制备方法 - Google Patents
一种汽车用吸震热塑性弹性体材料及其制备方法 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
本发明公开了一种汽车用吸震热塑性弹性体材料及其制备方法，此弹性体由为氢化苯乙烯-丁二烯-苯乙烯、聚丙烯、氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯组成，白油，填充，润滑剂，抗氧剂。以上各组分在适当的重量比下混合造粒；制备工艺流程如下：先将各组分在搅拌机中混合1～30分钟，再在双螺杆机中塑化、拉条、切粒、风冷、包装；采用此配方及方法值得的本发明具有加工方便、手感好、吸震强及可循环利用。
Description
技术领域
本发明涉及高分子材料技术领域，尤其涉及一种汽车用吸震热塑性弹性体材料及其制备方法。
背景技术
目前市场上对于汽车用吸震材料的选用，传统上是用热固性聚氨酯发泡材料作为汽车内衬里，粘贴到汽车顶棚及各车门窗等地方，再通过用皮革或者编织网等材料对发泡材料进行包覆固定，汽车行业传统的对减震材料的使用存在主要以下缺点：
一：在一定的减震技术标准要求下，传统聚氨酯发泡材料相对应本发明材料来说使用体积相对应要大很多，这对于汽车这个非常有限的空间来说是很浪费的；
二：传统聚氨酯发泡材料的安装工艺相对应本发明材料多了个包覆层，同时安装工艺亦多了一道，在成本效益及安全可靠性上相对较差；
三：传统聚氨酯发泡材料物理性能较低，在经过多次的碰撞后物性下降很大，直接导致减震性能大幅降低，而本发明的热塑性材料经过多次碰撞物性基本无变化；
四：传统聚氨酯发泡材料为热固性材料，只能用模压法成型，且材料本身不能有效的回收再利用，而本发明材料可通过注塑、模压等多种成型工艺成型，材料本身可100％有效回收再利用。
发明内容
本发明要解决的技术问题是提供一种汽车用吸震热塑性弹性体材料及其制备方法。
为解决上述技术问题，本发明的目的是通过以下技术方案实现的。
一种汽车用吸震热塑性弹性体材料，其组成按重量配比为(％)：
氢化苯乙烯-丁二烯-苯乙烯 25—45％；
聚丙烯 10—20％；
氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯 15—25％；
白油 14—25％；
填充 5—25％；
抗氧剂 0.1—0.5％；
润滑剂 0.1—2％。
其中，所述氢化苯乙烯-丁二烯-苯乙烯为重均分子量在8万到20万的纯树脂。
其中：所述聚丙烯为均聚或共聚的纯树脂。
其中：所述氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯为重均分子量在10万到25万的纯树脂。
其中：所述白油为黏度在32到500间的化妆级白油。
其中：所述填充为碳酸钙、滑石粉、硅灰石、二氧化硅中的一种或几种混合物。
其中：所述抗氧化剂为三甘醇双-3-(3-叔丁基-4-羟基-5-甲基苯基)丙烯腈、三(2，4-二叔丁基酚)亚磷酸酯中的一种或几种混合物。
其中：所述润滑剂为硬酯酸类或者脂肪酸类。
一种汽车用吸震热塑性弹性体材料的制备方法，包括步骤：
a：按重量配比称取上述各种材料；
b：将a中配好的混合物在搅拌桶中混合2-15分钟；转速在200-1200转/分钟；
c：将混合好的原料置于双螺杆挤出机中塑化，造粒，其加工温度为一区100～120℃、二区130～150℃、三区160～180℃、四区180～205℃、五区180～205℃、六区170～185℃、七区170～180℃。
以上技术方案可以看出，本发明具有以下有益效果：
1、本发明有效的提高了材料的减震性能，可根据产品需求再适当调整材料的硬度；
2、本发明属环境友好型材料，可100％回收利用；并且本发明选用的材料大大降低了产品的成本。
具体实施方式
本发明提供一种汽车用减震热塑性弹性体材料的制备方法为：
1、按所述配方进行称量原材料；
2、将1配好的混合物在搅拌桶中混合2-15分钟；转速在200-1200转/分钟；
3、将混合好的原料置于双螺杆挤出机中塑化，造粒，其加工温度为一区100～120℃、二区130～150℃、三区160～180℃、四区180～205℃、五区180～205℃、六区170～185℃、七区170～180℃；
4、在生产过程中从挤出机中挤出胶料，拉条、水冷、吹干、切粒及包装。
为便于对本发明进一步理解，现结合具体实施例对本发明进行详细描述：
在实施例中，氢化苯乙烯-丁二烯-苯乙烯为重均分子量在8万到20万的纯树脂。聚丙烯为均聚或共聚的纯树脂，氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯为重均分子量在10万到25万的纯树脂，白油为黏度在32到500间的化妆级白油，填充为碳酸钙、滑石粉、硅灰石、二氧化硅中的一种或几种混合物，抗氧化剂为三甘醇双-3-(3-叔丁基-4-羟基-5-甲基苯基)丙烯腈、三(2，4-二叔丁基酚)亚磷酸酯(市售型号1010，168，1076等)中的一种或几种混合物，润滑剂为硬酯酸类或者脂肪酸类。
实施例1：
将氢化苯乙烯-丁二烯-苯乙烯重量百分比45％，聚丙烯20％，氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯15％，白油14％，填充5％，抗氧剂0.2％，润滑剂0.8％，将以上物料于搅拌桶中预先混合6分钟，再经双螺杆挤出造粒。其加工工艺为一区110℃、二区140℃、三区170℃、四区190℃、五区200℃、六区180℃、七区175℃。
实施例2：
将氢化苯乙烯-丁二烯-苯乙烯重量百分比35％，聚丙烯10％，氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯15％，白油19％，填充20％，抗氧剂0.2％，润滑剂0.8％，将以上物料于搅拌桶中预先混合6分钟，再经双螺杆挤出造粒。其加工工艺为一区110℃、二区140℃、三区170℃、四区190℃、五区200℃、六区180℃、七区175℃。
实施例3：
将氢化苯乙烯-丁二烯-苯乙烯重量百分比30％，聚丙烯10％，氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯20％，白油25％，填充14％，抗氧剂0.5％，润滑剂0.5％，将以上物料于搅拌桶中预先混合6分钟，再经双螺杆挤出造粒。其加工工艺为一区110℃、二区140℃、三区170℃、四区190℃、五区200℃、六区180℃、七区175℃。
实施例4：
将氢化苯乙烯-丁二烯-苯乙烯重量百分比25％，聚丙烯10％，氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯25％，白油14％，填充25％，抗氧剂0.3％，润滑剂0.7％，将以上物料于搅拌桶中预先混合6分钟，再经双螺杆挤出造粒。其加工工艺为一区110℃、二区140℃、三区170℃、四区190℃、五区200℃、六区180℃、七区175℃。
性能测试：
将上述造粒完的粒子在60～80oC的鼓风干燥箱中烘干2-4小时，然后在注射成型机上进行测试样件的制作成型。
流动性能按照ISO1133进行测试，为统一衡量材料的流动性能，采用同样的测试条件为温度170oC，砝码为5KG。拉伸性能测试试样尺寸为150mm*10mm*4mm，拉伸速度为50mm/min，硬度性能测试，试样尺寸为80mm*80mm*4mm，减震测试试样尺寸为100mm*100mm*4mm.材料的成型条件由材料的流动性能、材料的加工温度、材料的注塑成型温度来共同衡量.
实施例1～4的配方及材料性能见表1：
表1
| 复合材料名称 | 实施例1 | 实施例2 | 实施例3 | 实施例4 |
| 氢化苯乙烯-丁二烯-苯乙烯 | 45 | 35 | 30 | 25 |
| 聚丙烯 | 20 | 10 | 10 | 10 |
| 氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯 | 15 | 15 | 20 | 25 |
| 白油 | 14 | 19 | 25 | 14 |
| 填充 | 5 | 20 | 14 | 25 |
| 抗氧剂 | 0.2 | 0.2 | 0.5 | 0.3 |
| 润滑剂 | 0.8 | 0.8 | 0.5 | 0.7 |
| 拉伸强度MPa | 6.8 | 7.2 | 7.8 | 8.5 |
| 断裂伸长率％ | 548 | 536 | 521 | 493 |
| 硬度邵氏A | 67 | 68 | 69 | 70 |
| 减震系数(越大减震效果越好 | 0.028 | 0.042 | 0.057 | 0.084 |
| 产品加工温度(℃) | 150～170 | 180-200 | 190-210 | 170-185 |
| 注塑成型温度(℃) | 150～170 | 180-200 | 190-210 | 170-185 |
根据以上性能分析。由实施例1-4可看出，材料添加氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯含量越高时，对材料的减震性能效果越明显，同时材料的机械物理性能也有所提高。
以上对本发明所提供的一种汽车用吸震热塑性弹性体材料及其制备方法进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。
Claims (8)
1.一种汽车用吸震热塑性弹性体材料，其特征在于，其组成按重量配比为(％)：
氢化苯乙烯-丁二烯-苯乙烯 25-45％；
聚丙烯 10-20％；
氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯 15-25％；
白油 14-25％；
填充 5-25％；
抗氧剂 0.1-0.5％；
润滑剂 0.1-2％。
2.如权利要求1所述的汽车用吸震热塑性弹性体材料，其特征在于，所述氢化苯乙烯-丁二烯-苯乙烯为重均分子量在8万到20万的纯树脂。
3.如权利要求1所述的汽车用吸震热塑性弹性体材料，其特征在于：所述聚丙烯为均聚或共聚的纯树脂。
4.如权利要求1所述的汽车用吸震热塑性弹性体材料，其特征在于：所述氢化苯乙烯-异戊二烯-乙烯支化异戊二烯-苯乙烯为重均分子量在10万到25万的纯树脂。
5.如权利要求1所述的汽车用吸震热塑性弹性体材料，其特征在于：所述填充为碳酸钙、滑石粉、硅灰石、二氧化硅中的一种或几种的混合物。
6.如权利要求1所述的汽车用吸震热塑性弹性体材料，其特征在于：所述抗氧化剂为三甘醇双-3-(3-叔丁基-4-羟基-5-甲基苯基)丙烯腈、三(2，4-二叔丁基酚)亚磷酸酯中的一种或几种混合物。
7.如权利要求1所述的汽车用吸震热塑性弹性体材料，其特征在于：所述润滑剂为硬脂酸类或者脂肪酸类。
8.一种如权利要求1所述汽车用吸震热塑性弹性体材料的制备方法，其特征在于，包括步骤：
a：按重量配比称取上述各种材料；
b：将a中配好的混合物在搅拌桶中混合2-15分钟；转速在200-1200转/分钟；
c：将混合好的原料置于双螺杆挤出机中塑化，造粒，其加工温度为一区100～120℃、二区130～150℃、三区160～180℃、四区180～205℃、五区180～205℃、六区170～185℃、七区170～180℃。
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