CN103740063A - 低浮纤阻燃增强pbt塑料及其制备方法 - Google Patents

低浮纤阻燃增强pbt塑料及其制备方法 Download PDF

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CN103740063A
CN103740063A CN201310657887.7A CN201310657887A CN103740063A CN 103740063 A CN103740063 A CN 103740063A CN 201310657887 A CN201310657887 A CN 201310657887A CN 103740063 A CN103740063 A CN 103740063A
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floating fine
retardant reinforced
pbt plastic
flame
reinforced pbt
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赵成方
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QINGDAO DADU NEW MATERIAL SCIENCE & TECHNOLOGY Co Ltd
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    • B29C2948/92904—Die; Nozzle zone

Abstract

本发明涉及塑料改性技术领域，特别是涉及一种低浮纤阻燃增强PBT塑料及其制备方法；其由如下质量百分比的组分组成：PBT占55%～70%，增韧剂占5～15%，短切玻纤占10%-20%，阻燃剂占10～15%，浮纤消除剂占0.3%～0.8%，加工助剂为余量；所述加工助剂为硅烷偶联剂、抗氧剂、润滑剂中的一种或多种；其制备方法包括混合、挤出和注塑成型步骤；本发明制备的产品兼具低浮纤、阻燃性和增强性。

Description

低浮纤阻燃增强PBT塑料及其制备方法
技术领域
本发明涉及塑料改性技术领域，特别是涉及一种低浮纤阻燃增强PBT塑料及其制备方法。
背景技术  
聚对苯二甲酸丁二醇酯（简称PBT），属于聚酯系列，是由1,4-丁二醇(1,4-Butylene glycol)与对苯二甲酸(PTA)或者对苯二甲酸酯(DMT)聚缩合而成，并经由混炼程序制成的乳白色半透明到不透明、结晶型热塑性聚酯树脂。与PET一起统称为热塑性聚酯，或饱和聚酯。
由于PBT具有良好的耐热性、耐候性、耐药品性，并且电气特性佳、吸水性小、光泽良好，因此广泛应用于电子电器、汽车零件、机械、家用品等领域，而PBT产品又与PPS、PC、POM、PA等共称为五大泛用工程塑料。但是传统的PBT产品存在下述问题：1、在使用时往往会出现由于明火或静电等因素而引发的燃烧等意外状况；2、在注塑使容易出现浮纤现象表面光滑度下降，外观较差，影响使用。
为解决上述燃烧的问题，中国发明专利申请CN 102675837 A公开了《一种增强阻燃PBT的配方》，其包括PBT、辅助塑料、阻燃剂、填充剂、抗静电以及耐热剂，所述的辅助塑料为POE塑料，阻燃剂为磷酸三甲苯酯、三氧化二锑，填充剂为碳酸钙、二氧化硅，抗静电剂为单硬脂酸甘油脂，耐热剂为玻璃纤维。其中所述的PBT占50%-60%，POE塑料占2%-2.5%，磷酸三甲苯酯占7%-8%，三氧化二锑占2%-3%，碳酸钙占0.5%-1.5%，二氧化硅占1.5%-2%，单硬脂酸甘油脂占2%-3%，玻璃纤维占25%-30%。该配方制得的增强阻燃PBT具有阻燃、耐高温、抗静电、韧性高的功效。
为解决上述浮纤的问题，中国发明专利申请CN 102924884 A公开了一种PBT复合材料及其制备方法，其按重量份计，包含PBT 100份、阻燃剂 20-30份、抗滴落剂 0.1-0.5份、增韧剂 10-20份、抗静电剂 10-20份、增粘剂 1-5份、乙酸乙酯 0.2-5份。该专利避免了浮纤现象，并具有阻燃性，但是是非增强型产品。
综上所述，现有技术中还没有一种兼具低浮纤、阻燃和增强性的PBT复合材料。
发明内容
    为解决上述问题，本发明的目的在于提供一种低浮纤阻燃增强PBT塑料，使其兼具低浮纤、阻燃性和增强性；本发明的另一目的使提供低浮纤阻燃增强PBT塑料的制备方法。
本发明的技术方案为：一种低浮纤阻燃增强PBT塑料，其由如下质量百分比的组分组成：PBT占55%～70%，增韧剂占5～15%，短切玻纤占10%-20%，阻燃剂占10～15%，浮纤消除剂占0.3%～0.8%，加工助剂为余量；所述加工助剂为硅烷偶联剂、抗氧剂、润滑剂中的一种或多种。
优化的，所述增韧剂采用含PBT结晶硬段、聚酯软段型。
优化的，所述增韧剂采用热塑性聚酯弹性体。
优化的，所述环保阻燃剂采用十溴二苯乙烷和/或三氧化二锑。
优化的，所述润滑剂采用脂肪酸酯和乙撑双硬脂酰胺的混合物，两者重量比例为1-2:1。
优化的，所述浮纤消除剂采用TAF。
本发明提供的上述低浮纤阻燃增强PBT塑料的制备方法，其包括如下步骤：首先将各组分按照质量百分比用高速搅拌机搅拌混匀，然后转入双螺杆挤出机中熔融挤出，冷却，最后注塑成型即制得产品。
优化的，原料在高速搅拌机中搅拌5-10min。
优化的，挤出时双螺杆挤出机的料筒温度为：后段230-240℃，中段240-250℃，前段250-255℃，机头温度255-260℃。
本发明的有益效果在于：
1、本发明采用含PBT结晶硬段、聚酯软段型增韧剂，有效降低了塑料的结晶度，降低了材料的后收缩现象，大幅降低了材料的表面浮纤。并进一步采用两种不同种类的润滑剂和浮纤消除剂复配技术，达到了进一步有效降低制品表面浮纤，使材料表面光滑平整，使本发明提供的产品兼具低浮纤、阻燃性和增强性。
2、本发明材料较好的解决了目前市场该型材料外观粗糙只能用于内部件的缺陷，具有广泛的市场前景。
3、本发明采用无卤阻燃剂，是具有阻燃性的无毒环保型PBT树脂。
具体实施方式
下面结合具体实施方式进一步说明本发明。
本实施方式的技术方案为：一种低浮纤阻燃增强PBT塑料，其由如下质量百分比的组分组成：PBT占55%～70%，增韧剂占5～15%，短切玻纤占10%-20%，阻燃剂占10～15%，浮纤消除剂占0.3%～0.8%，加工助剂为余量；所述加工助剂为硅烷偶联剂、抗氧剂、润滑剂中的一种或多种。
其中，所述增韧剂采用含PBT结晶硬段、聚酯软段型。
其中，所述增韧剂采用热塑性聚酯弹性体。
其中，所述环保阻燃剂采用十溴二苯乙烷和/或三氧化二锑。
其中，所述润滑剂采用脂肪酸酯和乙撑双硬脂酰胺的混合物，两者重量比例为1-2:1。
其中，所述浮纤消除剂采用TAF。
本实施方式提供的上述的低浮纤阻燃增强PBT塑料的制备方法，其包括如下步骤：首先将各组分按照质量百分比用高速搅拌机搅拌混匀，然后转入双螺杆挤出机中熔融挤出，冷却，最后注塑成型即制得产品。
其中，原料在高速搅拌机中搅拌5-10min。
其中，挤出时双螺杆挤出机的料筒温度为：后段230-240℃，中段240-250℃，前段250-255℃，机头温度255-260℃。
为进一步具体说明本发明，本实施方式提供了三个样品，分别即为样品1-3，其组分及重量百分数如表1所示。
表1
Figure 2013106578877100002DEST_PATH_IMAGE002
 
    上述三个样品制品表面光滑平整，无明显是浮纤，因此本发明解决了该类产品表面浮纤现象。
本实施方式的特点在于：
1、本实施方式采用含PBT结晶硬段、聚酯软段型增韧剂，有效降低了塑料的结晶度，降低了材料的后收缩现象，大幅降低了材料的表面浮纤。并进一步采用两种不同种类的润滑剂和浮纤消除剂复配技术，达到了进一步有效降低制品表面浮纤，使材料表面光滑平整，使本实施方式提供的产品兼具低浮纤、阻燃性和增强性。
2、本实施方式材料较好的解决了目前市场该型材料外观粗糙只能用于内部件的缺陷，具有广泛的市场前景。
3、本实施方式采用无卤阻燃剂，是具有阻燃性的无毒环保型PBT树脂。

Claims (9)

1. 一种低浮纤阻燃增强PBT塑料，其特征在于：其由如下质量百分比的组分组成：PBT占55%～70%，增韧剂占5～15%，短切玻纤占10%-20%，阻燃剂占10～15%，浮纤消除剂占0.3%～0.8%，加工助剂为余量；所述加工助剂为硅烷偶联剂、抗氧剂、润滑剂中的一种或多种。
2.根据权利要求1所述的低浮纤阻燃增强PBT塑料，其特征在于：所述增韧剂采用含PBT结晶硬段、聚酯软段型。
3.根据权利要求2所述的低浮纤阻燃增强PBT塑料，其特征在于：所述增韧剂采用热塑性聚酯弹性体。
4.根据权利要求3所述的低浮纤阻燃增强PBT塑料，其特征在于：所述环保阻燃剂采用十溴二苯乙烷和/或三氧化二锑。
5.根据权利要求4所述的低浮纤阻燃增强PBT塑料，其特征在于：所述润滑剂采用脂肪酸酯和乙撑双硬脂酰胺的混合物，两者重量比例为1-2:1。
6.根据权利要求5所述的低浮纤阻燃增强PBT塑料，其特征在于：所述浮纤消除剂采用TAF。
7.根据权利要求1-6任意一项所述的低浮纤阻燃增强PBT塑料的制备方法，其特征在于：其包括如下步骤：首先将各组分按照质量百分比用高速搅拌机搅拌混匀，然后转入双螺杆挤出机中熔融挤出，冷却，最后注塑成型即制得产品。
8.根据权利要求7所述的低浮纤阻燃增强PBT塑料的制备方法，其特征在于：原料在高速搅拌机中搅拌5-10min。
9.根据权利要求8所述的低浮纤阻燃增强PBT塑料的制备方法，其特征在于：挤出时双螺杆挤出机的料筒温度为：后段230-240℃，中段240-250℃，前段250-255℃，机头温度255-260℃。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3312238A1 (de) * 2016-10-19 2018-04-25 Wolfgang Eberle Polymergemische enthaltend polybutylenterephthalat und formteile aus diesen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3312238A1 (de) * 2016-10-19 2018-04-25 Wolfgang Eberle Polymergemische enthaltend polybutylenterephthalat und formteile aus diesen

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