CN102424715B - 一种中空玻璃微珠填充改性hips材料及其制备方法 - Google Patents
一种中空玻璃微珠填充改性hips材料及其制备方法 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Abstract
本发明公开了一种中空玻璃微珠填充改性HIPS材料及其制备方法，所述中空玻璃微珠填充改性HIPS材料，按重量百分比，由以下组分组成：HIPS树脂50-80％，相容剂3-5％，增韧剂5-10％，偶联剂3-5％，补强剂1-3％，中空玻璃微珠5-30％，塑料加工助剂1-3％。本发明选取HIPS树脂为基体树脂，中空玻璃微珠为填料，采用合适种类和配比的助剂，在恰当的工艺条件下加工，使得制备的中空玻璃微珠填充改性HIPS材料在拉伸强度、弯曲强度、弯曲模量、冲击强度、流动性指数等方面都比较优异，可广泛运用于仪器仪表、家用电器、玩具和娱乐用品以及建筑行业。
Description
[技术领域]
本发明涉及高分子材料领域，尤其涉及一种中空玻璃微珠填充改性HIPS材料及其制备方法。
[背景技术]
空心玻璃微珠，是由无机材料构成的，按化学成份含有：二氧化硅、氧化铝、氧化锆、氧化镁、硅酸钠等。其粒径十到几百微米，壁厚几个微米，为内部充斥二氧化碳等气体的封闭微型球体。并且具有质轻、低导热、无毒、不燃，化学稳定性好、高分散等优点。
HIPS树脂是由聚苯乙烯加丁二烯改性而成，是最便宜的工程塑料之一，易加工、尺寸稳定性优异、冲击强度较PS高并且有较高刚性、有优良的介电绝缘性、光泽较好、易于涂装、低吸水。
中空玻璃微珠作为一种新型的无机刚性粒子，在聚合物中特别是在工业界已经得到了广泛的应用。但关于中空玻璃微珠填充聚合物的各种研究还很不完善，大部分都集中在热固性树脂领域。
[发明内容]
本发明提供了一种中空玻璃微珠填充改性HIPS材料及其制备方法，将中空玻璃微珠填充到HIPS材料里，使得制备的改性HIPS材料在拉伸强度、弯曲强度、弯曲模量、冲击强度、流动性指数等方面比较优异。
本发明的技术方案是：
一种中空玻璃微珠填充改性HIPS材料，按重量百分比，由以下组分组成：
上述所述的中空玻璃微珠填充改性HIPS材料的制备方法，包括以下步骤：
步骤一、按上述所述的重量百分比称取各个组分，并对称取的各个组分进行干燥处理；
步骤二、将干燥处理后的HIPS树脂、相容剂和偶联剂置于高速混合机或搅拌机中预先混合3-5min，再加入中空玻璃微珠、补强剂、增韧剂、塑料加工助剂继续混合10-20min；
步骤三、将步骤二混合后的物料加入双螺杆挤出机的料斗中经过熔融反应，挤出造粒；双螺杆挤出机的工艺条件为：螺杆长径比35，前段温度200-240℃、中段温度190-230℃、后段温度180-220℃、机头温度200-230℃；螺杆转速350-400r/min。
本发明选取HIPS树脂为基体树脂，中空玻璃微珠为填料，采用合适种类和配比的助剂，在恰当的工艺条件下加工，使得制备的中空玻璃微珠填充改性HIPS材料在拉伸强度、弯曲强度、弯曲模量、冲击强度、流动性指数等方面都比较优异，可广泛运用于仪器仪表、家用电器、玩具和娱乐用品以及建筑行业。
[具体实施方式]
下面对本发明的具体实施例做一详细的阐述。
其中，在下述各个实施例中，HIPS树脂采用镇江奇美实业产的HIPS 888G；中空玻璃微珠采用美国3M公司产的碱石灰硼硅酸盐玻璃微珠牌号S32；增韧剂采用岳阳巴陵石化产的SBS 792；偶联剂为道康宁公司产的硅烷类偶联剂KH570；补强剂采用德国德固赛产超细二氧化硅A380；塑料加工助剂包括抗氧剂和润滑剂，抗氧剂由酚类抗氧化剂(比如CIBA精化的Irganox 1098)和磷酸酯类抗氧化剂(比如CIBA精化的Irganox 168)按重量1∶1配比而成，所述润滑剂采用已撑双硬酸脂酰胺，比如国产EBS；相容剂为自制的PS接枝马来酸酐(PS-g-MAH)，其制备方法如下：
按重量百分比含量称取GPPS 91％、第一接枝单体3％、第二接枝单体3％、引发剂0.1％、抗氧剂0.4％、润滑剂0.5％、白矿油2％；其中，第一接枝单体为纯度为化学纯的马来酸酐，第二接枝单体为纯度为工业纯的苯乙烯；
将引发剂溶于白矿油中，搅拌均匀形成第一混合液；再将GPPS、第一接枝单体、第二接枝单体、抗氧剂、润滑剂和第一混合液加入到高混机中，混合均匀形成第二混合液；
将第二混合液加入到双螺杆挤出机的料斗中，经熔融、挤出、造粒，得到自制的PS接枝马来酸酐；其中，双螺杆挤出机的工业条件为：熔融段147-153℃，反应段170-185℃，脱气段177-183℃，机头147-153℃。
其中，上述GPPS可以选用美国Dow化学公司生产的666H；马来酸酐可以选用天津中和化工厂产；苯乙烯可以选用美国Dow化学公司产；引发剂可以选用阿克苏诺贝尔产，纯度为分析纯；抗氧剂可以选用瑞士汽巴精化产的1010或168；润滑剂可以选用韩国产的EBS 120；白矿油可以选用抚顺盛威石化产的白矿油32#。
实施例1
该实施例的中空玻璃微珠填充改性HIPS材料，按重量百分比，由以下组分组成：
HIPS树脂80％；中空玻璃微珠5％；相容剂4％；增韧剂5％；偶联剂3.5％；补强剂1％；塑料加工助剂1.5％。
其制备方法如下：
步骤一、按上述所述的重量百分比称取各个组分，并对称取的各个组分进行干燥处理；具体可以采用干燥机进行干燥处理；
步骤二、将干燥后的HIPS树脂、相容剂和偶联剂置于高速混合机或搅拌机中预先混合3min，再加入中空玻璃微珠、补强剂、增韧剂、塑料加工助剂继续混合10min；
步骤三、将步骤二混合后的物料加入双螺杆挤出机的料斗中经过熔融反应，挤出造粒；双螺杆挤出机的工艺条件为：螺杆长径比为35，前段温度200℃、中段温度190℃、后段温度180℃、机头温度200℃；螺杆转速350r/min。
实施例2
该实施例的中空玻璃微珠填充改性HIPS材料，按重量百分比，由以下组分组成：
HIPS树脂60％；中空玻璃微珠20％；相容剂3％；增韧剂10％；偶联剂3％；补强剂3％；塑料加工助剂1％。
其制备方法如下：
步骤一、按上述所述的重量百分比称取各个组分，并对称取的各个组分进行干燥处理；具体可以采用干燥机进行干燥处理；
步骤二、将干燥后的HIPS树脂、相容剂和偶联剂置于高速混合机或搅拌机中预先混合5min，再加入中空玻璃微珠、补强剂、增韧剂、塑料加工助剂继续混合20min；
步骤三、将步骤二混合后的物料加入双螺杆挤出机的料斗中经过熔融反应，挤出造粒；双螺杆挤出机的工艺条件为：螺杆长径比为35，前段温度240℃、中段温度230℃、后段温度220℃、机头温度230℃；螺杆转速400r/min。
实施例3
该实施例的中空玻璃微珠填充改性HIPS材料，按重量百分比，由以下组分组成：
HIPS树脂50％；中空玻璃微珠30％；相容剂3％；增韧剂8％；偶联剂3％；补强剂3％；塑料加工助剂3％。
其制备方法如下：
步骤一、按上述所述的重量百分比称取各个组分，并对称取的各个组分进行干燥处理；具体可以采用干燥机进行干燥处理；
步骤二、将干燥后的HIPS树脂、相容剂和偶联剂置于高速混合机或搅拌机中预先混合5min，再加入中空玻璃微珠、补强剂、增韧剂、塑料加工助剂继续混合15min；
步骤三、将步骤二混合后的物料加入双螺杆挤出机的料斗中经过熔融反应，挤出造粒；双螺杆挤出机的工艺条件为：螺杆长径比为35，前段温度220℃、中段温度200℃、后段温度210℃、机头温度225℃；螺杆转速370r/min。
性能测试及评价：
上述实施例1-3制备的粒子物料按ASTM标准注塑成型成各种标准力学性能测试样条，按美国UL标准注塑成标准燃烧试样条，测试方法如表1所示：
表1
实施例1的性能测试数据如下表2所示：
表2
实施例2的性能测试数据如下表3所示：
表3
实施例3的性能测试数据如下表4所示：
表4
由上表2、3、4可以看出，实施例1-3制备的粒子物料的熔融流动指数、冲击强度数值比考数值高出很多，证明实施例1-3制备的粒子物料的流动性比较好、冲击强度高；另外拉伸强度、弯曲强度、弯曲模量的实际测试数值也都比参考数值高，说明实施例1-3制备的粒子物料在拉伸强度、弯曲强度、弯曲模量等机械性能方面也比较优异。
以上所述的本发明实施方式，并不构成对本发明保护范围的限定。任何在本发明的精神和原则之内所作的修改、等同替换和改进等，均应包含在本发明的权利要求保护范围之内。
Claims (4)
1.一种中空玻璃微珠填充改性HIPS材料，其特征在于：按重量百分比，由以下组分组成：
所述相容剂为自制的PS接枝马来酸酐，其制备方法如下：
按重量百分比含量称取GPPS 91%、第一接枝单体3%、第二接枝单体3%、引发剂0.1%、抗氧剂0.4%、润滑剂0.5%、白矿油2%；其中，第一接枝单体为纯度为化学纯的马来酸酐，第二接枝单体为纯度为工业纯的苯乙烯；
将引发剂溶于白矿油中，搅拌均匀形成第一混合液；再将GPPS、第一接枝单体、第二接枝单体、抗氧剂、润滑剂和第一混合液加入到高混机中，混合均匀形成第二混合液；
将第二混合液加入到双螺杆挤出机的料斗中，经熔融、挤出、造粒，得到自制的PS接枝马来酸酐；其中，双螺杆挤出机的工艺条件为：熔融段147-153℃，反应段170-185℃ ，脱气段177-183℃， 机头147-153℃。
2.根据权利要求1所述的中空玻璃微珠填充改性HIPS材料，其特征在于：所述塑料加工助剂包括抗氧剂和润滑剂。
3.根据权利要求2所述的中空玻璃微珠填充改性HIPS材料，其特征在于：所述抗氧剂由酚类抗氧剂和磷酸酯类抗氧剂按重量1：1配比而成；所述润滑剂为已撑双硬酸脂酰胺。
4.一种如权利要求1至3任一权利要求所述的中空玻璃微珠填充改性HIPS材料的制备方法，其特征在于：包括以下步骤：
步骤一、按权利要求1所述的重量百分比称取各个组分，并对称取的各个组分进行干燥处理；
步骤二、将干燥处理后的HIPS树脂、相容剂和偶联剂置于高速混合机或搅拌机中预先混合3-5min，再加入中空玻璃微珠、补强剂、增韧剂、塑料加工助剂继续混合10-20min；
步骤三、将步骤二混合后的物料加入双螺杆挤出机的料斗中经过熔融反应，挤出造粒；双螺杆挤出机的工艺条件为：螺杆长径比35，前段温度200-240℃、中段温度190-230℃、后段温度180-220℃、机头温度200-230℃；螺杆转速350-400r/min。
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| 李军伟等.影响中空玻璃微珠填充PS复合材料性能的因素.《合成树脂及塑料》.2011,第28卷(第2期),第12-15页. |
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