CN114921066A - 一种发泡pet复合板材及其制备方法 - Google Patents
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Abstract
本发明提供了一种发泡PET复合板材及其制备方法,属于板材技术领域。提供了一种发泡PET复合板材,由包括以下质量份数的组分制得:聚对苯二甲酸乙二醇酯100份,调节剂10~20份,无机填料100~200份,发泡剂1~2份和PE蜡1~4份,所述聚对苯二甲酸乙二醇酯为回收的聚对苯二甲酸乙二醇酯。本发明使用回收的聚对苯二甲酸乙二醇酯,实现了PET的资源化利用,解决了现有技术中PET存在浪费的问题。且本发明通过对PET、调节剂、无机填料、发泡剂和PE蜡用量的精确限制,得到的发泡PET复合板材兼具高强、隔音和保温性能,无污染。
Description
技术领域
本发明涉及板材技术领域,尤其涉及一种发泡PET复合板材及其制备方法。
背景技术
聚对苯二甲酸乙二酯(PET)化学式为(C10H8O4)n,是由对苯二甲酸二甲酯与乙二醇酯交换或以对苯二甲酸与乙二醇酯化先合成对苯二甲酸双羟乙酯,然后再进行缩聚反应制得,属结晶型饱和聚酯,为乳白色或浅黄色、高度结晶的聚合物,表面平滑有光泽,是生活中常见的一种树脂;在较宽的温度范围内具有优良的物理机械性能,长期使用温度可达120℃,电绝缘性优良,甚至在高温高频下,其电性能仍较好,但耐电晕性较差,抗蠕变性,耐疲劳性,耐摩擦性、尺寸稳定性都很好。
PET的主要应用为电子电器方面有:电气插座、电子连接器、电饭煲把手、电视偏向轭,端子台,断电器外壳、开关、马达风扇外壳、仪表机械零件、点钞机零件、电熨斗、电磁灶烤炉的配件;汽车工业中的流量控制阀、化油器盖、车窗控制器、脚踏变速器、配电盘罩;机械工业齿轮、叶片、皮带轮、泵零件、另外还有轮椅车体及轮子、灯罩外壳、照明器外壳、排水管接头、拉链、钟表零件、喷雾器部件;可纺成聚酯纤维,即涤纶;可制成薄膜用于录音、录像、电影胶片等的基片、绝缘膜、产品包装等;作为塑料可吹制成各种瓶,如可乐瓶、矿泉水瓶等;可作为电器零部件、轴承、齿轮等。
现有技术中PET的大量使用造成了PET的浪费,不能实现PET的资源化利用。
发明内容
有鉴于此,本发明的目的在于提供一种发泡PET复合板材及其制备方法。本发明利用回收的PET制备板材,实现了PET的资源化利用。
为了实现上述发明目的,本发明提供以下技术方案:
本发明提供了一种发泡PET复合板材,由包括以下质量份数的组分制得:
聚对苯二甲酸乙二醇酯100份,调节剂10~20份,无机填料100~200份,发泡剂1~2份和PE蜡1~4份,所述聚对苯二甲酸乙二醇酯为回收的聚对苯二甲酸乙二醇酯。
优选地,所述的发泡PET复合板材由包括以下质量份数的组分制得:
聚对苯二甲酸乙二醇酯100份,调节剂14~16份,无机填料140~160份,发泡剂1~2份和PE蜡2~3份。
优选地,所述的发泡PET复合板材由包括以下质量份数的组分制得:
聚对苯二甲酸乙二醇酯100份,调节剂15份,无机填料150份,发泡剂2份和PE蜡3份。
优选地,所述无机填料为碳酸钙和/或滑石粉。
优选地,所述无机填料为碳酸钙和滑石粉时,所述碳酸钙与滑石粉的质量比为1~9:9~1。
优选地,所述发泡剂为AC发泡剂。
优选地,所述调节剂为复合ACR类发泡调节剂。
本发明还提供了上述技术方案所述的发泡PET复合板材的制备方法,包括以下步骤:
将聚对苯二甲酸乙二醇酯、调节剂、无机填料、发泡剂和PE蜡混合后依次进行熔融挤出、定塑和压延成膜,得到所述发泡PET复合板材。
优选地,所述熔融挤出的温度为200~260℃。
本发明提供了一种发泡PET复合板材,由包括以下质量份数的组分制得:聚对苯二甲酸乙二醇酯100份,调节剂10~20份,无机填料100~200份,发泡剂1~2份和PE蜡1~4份,所述聚对苯二甲酸乙二醇酯为回收的聚对苯二甲酸乙二醇酯。
本发明使用回收的聚对苯二甲酸乙二醇酯,实现了PET的资源化利用,解决了现有技术中PET存在浪费的问题。
且本发明通过对PET、调节剂、无机填料、发泡剂和PE蜡用量的精确限制,得到的发泡PET复合板材兼具高强、隔音和保温性能,无污染。
本发明还提供了上述技术方案所述发泡PET复合板材的制备方法,本发明的制备方法简便、快捷、步骤少,有利于实现工业化生产。
附图说明
图1为实施例1制备的发泡PET复合板材的实物图;
图2为实施例2制备的发泡PET复合板材的实物图。
具体实施方式
本发明提供了一种发泡PET复合板材,由包括以下质量份数的组分制得:
聚对苯二甲酸乙二醇酯100份,调节剂10~20份,无机填料100~200份,发泡剂1~2份和PE蜡1~4份,所述聚对苯二甲酸乙二醇酯为回收的聚对苯二甲酸乙二醇酯。
在本发明中,若无特殊说明,使用的原料均为本领域市售商品。
在本发明中,所述聚对苯二甲酸乙二醇酯为回收的聚对苯二甲酸乙二醇酯,更优选为PET瓶片经过回收得到所述聚对苯二甲酸乙二醇。
在本发明中,所述PET瓶片的回收的过程优选包括以下步骤:
将PET瓶体与盖、标签分离,然后依次进行粉碎、清洗和干燥。
在本发明的具体实施例中,步骤如下:
第一步:把各种PET瓶片加以挑选和分门别类,撕掉外面的商标,商标大部分是OPP,也有部分聚氯乙烯收缩膜,必须首先剥离;
第二步:粉粹工序,在粉碎的过程中带水冲洗,除掉各种PET瓶片中的污垢;
第三步:得到的碎片放入蒸汽处理装置,加入氢氧化钠(片碱),清除掉油腻和其它顽固性杂质;
第四步:用清水洗干净,甩干剩余的水分并装袋,然后到真空烘箱进行烘干;
第五步:破碎成片状。
以所述聚对苯二甲酸乙二醇酯的质量份数为基准,所述发泡PET复合板材优选包括1~2质量份数的发泡剂,更优选为2份。
在本发明中,所述发泡剂优选为AC发泡剂。
以所述聚对苯二甲酸乙二醇酯的质量份数为基准,所述发泡PET复合板材优选包括14~16质量份数的调节剂,更优选为15份。
在本发明中,所述调节剂优选为复合型ACR类发泡调节剂,作用是增加溶体强度。
以所述聚对苯二甲酸乙二醇酯的质量份数为基准,所述发泡PET复合板材优选包括140~160质量份数的无机填料,更优选为150份。
在本发明中,所述无机填料优选为碳酸钙和/或滑石粉。
在本发明中,所述无机填料优选为碳酸钙和滑石粉时,所述碳酸钙与滑石粉的质量比优选为1~9:9~1,更优选为1:1。
在本发明中,所述无机填料的粒径优选为200~400目。
以所述聚对苯二甲酸乙二醇酯的质量份数为基准,所述发泡PET复合板材优选包括2~3质量份数的PE蜡,更优选为3份。
在本发明的具体实施例中,所述的发泡PET复合板材优选由包括以下质量份数的组分制得:
聚对苯二甲酸乙二醇酯100份,调节剂15份,无机填料150份,发泡剂2份和PE蜡3份。
本发明还提供了上述技术方案所述的发泡PET复合板材的制备方法,包括以下步骤:
将聚对苯二甲酸乙二醇酯、调节剂、无机填料、发泡剂和PE蜡混合后依次进行熔融挤出、定塑和压延成膜,得到所述发泡PET复合板材。
在本发明中,所述熔融挤出的温度优选为200~260℃,更优选为240℃。
本发明对所述定塑和压延成膜的具体方式没有特殊的限定,采用本领域技术人员熟知的方式即可。
为了进一步说明本发明,下面结合实例对本发明提供的发泡PET复合板材及其制备方法进行详细地描述,但不能将它们理解为对本发明保护范围的限定。
实施例1~5的发泡PET复合板材的制备原料如表1所示。
表1实施例1~5的发泡PET复合板材的制备原料(质量份)
实施例1~5的发泡PET复合板材的制备方法如下:
PET瓶片回收聚对苯二甲酸乙二醇酯:
第一步:把各种PET瓶片加以挑选和分门别类,撕掉外面的商标,商标大部分是OPP,也有部分聚氯乙烯收缩膜,必须首先剥离;
第二步:粉粹工序,在粉碎的过程中带水冲洗,除掉各种PET瓶片中的污垢;
第三步:得到的碎片放入蒸汽处理装置,加入氢氧化钠(片碱),清除掉油腻和其它顽固性杂质;
第四步:用清水洗干净,甩干剩余的水分并装袋,然后到真空烘箱进行烘干;
第五步:破碎成片状。
将回收的聚对苯二甲酸乙二醇酯、调节剂、无机填料、发泡剂和PE蜡混合后依次进行熔融挤出(240℃)、定塑和压延成膜,得到发泡PET复合板材。
图1为实施例1制备的发泡PET复合板材的实物图,图2为实施例2制备的发泡PET复合板材的实物图。
实施例1~5的制备原料在熔融挤出过程中的发泡倍数分别为0.8、0.86、1.0、0.9和0.94倍。
对实施例1~5制得的废纺再生板材的硬度、静态载荷、弯曲强度和降噪系数进行测试,其中降噪系数参考国标GBJ47-1983,结果如表2所示。
表2实施例1~5的废纺再生板材的性能测试结果
以上所述仅是本发明的优选实施方式,并非对本发明作任何形式上的限制。应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (9)
1.一种发泡PET复合板材,其特征在于,由包括以下质量份数的组分制得:
聚对苯二甲酸乙二醇酯100份,调节剂10~20份,无机填料100~200份,发泡剂1~2份和PE蜡1~4份,所述聚对苯二甲酸乙二醇酯为回收的聚对苯二甲酸乙二醇酯。
2.根据权利要求1所述的发泡PET复合板材,其特征在于,由包括以下质量份数的组分制得:
聚对苯二甲酸乙二醇酯100份,调节剂14~16份,无机填料140~160份,发泡剂1~2份和PE蜡2~3份。
3.根据权利要求1或2所述的发泡PET复合板材,其特征在于,由包括以下质量份数的组分制得:
聚对苯二甲酸乙二醇酯100份,调节剂15份,无机填料150份,发泡剂2份和PE蜡3份。
4.根据权利要求1~3任一项所述的发泡PET复合板材,其特征在于,所述无机填料为碳酸钙和/或滑石粉。
5.根据权利要求4所述的发泡PET复合板材,其特征在于,所述无机填料为碳酸钙和滑石粉时,所述碳酸钙与滑石粉的质量比为1~9:9~1。
6.根据权利要求1~3任一项所述的发泡PET复合板材,其特征在于,所述发泡剂为AC发泡剂。
7.根据权利要求1~3任一项所述的发泡PET复合板材,其特征在于,所述调节剂为复合ACR类发泡调节剂。
8.权利要求1~7任一项所述的发泡PET复合板材的制备方法,其特征在于,包括以下步骤:
将聚对苯二甲酸乙二醇酯、调节剂、无机填料、发泡剂和PE蜡混合后依次进行熔融挤出、定塑和压延成膜,得到所述发泡PET复合板材。
9.根据权利要求8所述的制备方法,其特征在于,所述熔融挤出的温度为200~260℃。
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| CN101544811A (zh) * | 2009-04-30 | 2009-09-30 | 四川省宜宾五粮液集团有限公司 | 发泡pet片材及其制备方法 |
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| CA2581135A1 (en) * | 2004-09-17 | 2006-03-30 | Pactiv Corporation | Polymer foams with treated fillers, fabrication method and products using same |
| US8119701B2 (en) * | 2005-10-24 | 2012-02-21 | Owens Corning Intellectual Capital, Llc | Method of manufacturing polystyrene foam with polymer processing additives |
| CN109605708B (zh) * | 2018-12-14 | 2020-07-17 | 北京化工大学 | 一种热塑性聚酯挤出发泡成型方法 |
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