CN101787181A - 耐热发夹隔热片专用复合材料及其制备方法 - Google Patents
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Abstract
本发明公开了一种耐热发夹隔热片专用复合材料及其制备方法，由下述重量份数的原料制成：聚酯、成核剂、增韧剂、热稳定剂、抗黄变剂、润滑剂、玻璃纤维。本发明针对现有技术中发夹隔热片使用PPS材料、PA66+45％GF材料价格较高，而使用普通PET容易热氧化变色的问题，提供一种成本低、不易热氧化变色的耐热发夹隔热片专用复合材料及其制备方法。
Description
技术领域
本发明属于高分子材料技术领域，涉及一种耐热发夹隔热片专用复合材料，该材料可广泛用于美容领域、家电领域、汽车配件领域等。
背景技术
聚对苯二甲酸乙二醇酯(PET)树脂在工程塑料基体树脂中价格最为低廉。国内外很多公司在研究改性PET，美国杜邦公司研制的FR530、日本东洋纺公司研制的EMC117、日本宝理公司研制的CN9030被广泛用在家用电器、汽车配件领域。它们具有共同的优点：在较低的模温(80-100℃)下能快速成型，成型后的制品无浮纤，能耐220℃左右的高温。
发夹隔热片目前主要使用美国菲利普公司的R4系列、R7系列PPS材料，可是PPS属于特种工程塑料，原材料成本特别高，即使使用副牌PPS，原材料售价依旧高。发夹隔热片也可以使用PA66+45％GF，但还是因为尼龙树脂价格相对PET成本高而弃用。而普通PET用于做发夹隔热片容易热氧化变色。
发明内容
本发明要解决的技术问题在于，针对现有技术中发夹隔热片使用PPS材料、PA66+45％GF材料价格较高，而使用普通PET容易热氧化变色的问题，提供一种成本低、不易热氧化变色的耐热发夹隔热片专用复合材料。
本发明进一步要解决的技术问题在于，提供一种工艺简单、操作方便的耐热发夹隔热片专用复合材料的制备方法。
本发明解决其技术问题所采用的技术方案是：一种耐热发夹隔热片专用复合材料，由下述重量份数的原料制成：
聚酯 60～65
成核剂 0.5～1
增韧剂 3～5
热稳定剂 0.3～1
抗黄变剂 0.5～1
润滑剂 0.5～0.7
玻璃纤维 30～50。
所用聚酯为聚对苯二甲酸乙二醇酯(PET)，不选择其他聚酯是因为性价比原因，PET树脂价格是工程塑料中价格最为低廉的，熔点为250-260℃。
所述的成核剂为自制成核剂，为0.5％氢氧化钠、80％滑石粉和19.5％超细硫酸钡组成的混合物。
所述的增韧剂为丙烯酸酯类核壳共聚物或乙烯-a烯烃共聚物，其曾韧效果好，添加量较小，其他增韧剂效果较差，且需要添加的分量较大。
所述的热稳定剂为N，N′-双-(3-(3，5-二叔丁基-4-羟基苯基)丙酰基)己二胺。此热稳定剂在聚酯产品中的热稳定效果非常好。
所述的抗黄变剂为紫外线吸收剂和抗氧剂的复配物，二者的重量比为1∶1，具体为50％UV-5411和50％GX2921。紫外线吸收剂(UV-5411)的化学名称为2-(2-羟基-5-叔辛基苯基)苯并***，本发明抗黄变剂可以抑制PET制品发黄。
所述的润滑剂为脂肪酸酰胺(EBS)或褐煤酸蜡，其性价比较高。
所述的玻璃纤维的直径为4～17微米。
一种耐热发夹隔热片专用复合材料的制备方法，包括以下步骤：
(1)称取聚酯、成核剂、增韧剂、热稳定剂、抗黄变剂、润滑剂、玻璃纤维；
(2)将聚酯、成核剂、增韧剂、热稳定剂、抗黄变剂、润滑剂中速混合；
(3)将步骤(2)中混好的原料与玻璃纤维掺混，经双螺杆挤出机熔融挤出，造粒。
耐热发夹隔热片专用复合材料的制备方法，优选包括以下步骤：
(1)按照重量份数称取聚酯、成核剂、增韧剂、热稳定剂、抗黄变剂、润滑剂、玻璃纤维；
(2)将聚酯、成核剂、增韧剂、热稳定剂、抗黄变剂、润滑剂在中速混合器中混合3-7分钟；
(3)将步骤(2)混好的原料与玻璃纤维掺混，经双螺杆挤出机熔融挤出，造粒；双螺杆挤出机工艺条件为：双螺杆挤出机一区温度为180～260℃，二区温度为180～260℃，三区温度为180～260℃，四区温度为180～260℃，五区180～260℃，混合料在螺杆中输送时间为1～2分钟。
本发明采用价格低廉的普通聚对苯二甲酸乙二醇酯，加上成核剂、增韧剂、热稳定剂、抗黄变剂、润滑剂、玻璃纤维等助剂，对普通聚对苯二甲酸乙二醇酯进行改性处理；其中添加成核剂可使复合材料在70-100℃模温时成型，不用添加模温机，降低了能源消耗。增韧剂可增加产品韧性，可使复合材料在打螺钉时不开裂；热稳定剂、抗黄变剂可抑制制品发黄的现象；润滑剂使制品表面光洁没有浮纤；玻璃纤维可使制品具有很高的强度。上述助剂均为市售商品，无需特殊制备或处理，降低了生产成本，使制得的产品极具竞争优势。
本发明制备生产工艺简单可控，生产易操作。
具体实施方式
以下结合实施例对本发明作详细的说明：
聚对苯二甲酸乙二醇酯(PET)的特性黏度为0.67Dl/g，江阴兴泰产CZ-5011。
增韧剂选用为美国罗门哈斯产的丙烯酸酯类核壳共聚物，商品牌号为EXL2691A。
润滑剂为国产的乙撑双脂肪酸酰胺(商品名为EBS)。
热稳定剂为CIBA公司生产N，N′-双-(3-(3，5-二叔丁基-4-羟基苯基)丙酰基)己二胺(牌号GX2921)。
抗黄变剂为紫外线吸收剂和抗氧剂的复配物，其中，二者的重量比是1∶1，(50％UV-5411+50％GX2921)，UV-5411的化学名称为2-(2-羟基-5-叔辛基苯基)苯并***。
玻璃纤维为巨石集团生产的，牌号为988。
成核剂为由0.5％(重量百分比)氢氧化钠、80％(重量百分比)滑石粉、19.5％(重量百分比)超细硫酸钡组成的混合物，氢氧化钠为分析纯级，滑石粉的目数为2000目，超细硫酸钡为2000目。
实施例1，将PET(CZ-5011)64.6份(重量份数，下同)，成核剂(0.5％氢氧化钠+80％滑石粉+19.5％超细硫酸钡)0.5份，抗黄变剂(50％UV-5411+50％GX2921)0.9份，热稳定剂(GX2921)0.3份，增韧剂(EXL2691A)3份，润滑剂(EBS)0.7份，在中速搅拌机中混合5分钟，再与30份的玻璃纤维掺混，经过双螺杆挤出机挤出，造粒。其中各区段温度为：一区200℃，二区240℃，三区255℃，四区260℃，五区245℃，停留时间为90秒钟。
实施例2，将PET(CZ-5011)64.8份(重量份数，下同)，成核剂(0.5％氢氧化钠+80％滑石粉+19.5％超细硫酸钡)0.8份，抗黄变剂(50％UV-5411+50％GX2921)0.6份，热稳定剂(GX2921)0.3份，增韧剂(EXL2691A)3份，润滑剂(EBS)0.5份，在中速搅拌机中混合5分钟，再与30份的玻璃纤维掺混，经过双螺杆挤出机挤出，造粒。制备方法同实施例1，在此不再赘述。
实施例3，将PET(CZ-5011)64.6份(重量份数，下同)，成核剂(0.5％氢氧化钠+80％滑石粉+19.5％超细硫酸钡)0.9份，抗黄变剂(50％UV-5411+50％GX2921)0.7份，热稳定剂(GX2921)0.3份，增韧剂(EXL2691A)3份，润滑剂(EBS)0.5份，在中速搅拌机中混合5分钟，再与30份的玻璃纤维掺混，制备方法同实施例1，在此不再赘述。
实施例4，将PET(CZ-5011)64.4份(重量份数，下同)，成核剂(0.5％氢氧化钠+80％滑石粉+19.5％超细硫酸钡)1份，抗黄变剂(50％UV-5411+50％GX2921)0.8份，热稳定剂(GX2921)0.3份，增韧剂(EXL2691A)3份，润滑剂(EBS)0.7份，在中速搅拌机中混合5分钟，再与30份的玻璃纤维掺混，制备方法同实施例1，在此不再赘述。
实施例5，将PET(CZ-5011)64.1份(重量份数，下同)，成核剂(0.5％氢氧化钠+80％滑石粉+19.5％超细硫酸钡)1份，抗黄变剂(50％UV-5411+50％GX2921)0.9份，热稳定剂(GX2921)0.3份，增韧剂(EXL2691A)3份，润滑剂(EBS)0.7份，在中速搅拌机中混合5分钟，再与30份的玻璃纤维掺混，制备方法同实施例1，在此不再赘述。
实施例6、将PET(CZ-5011)64.4份(重量份数，下同)，成核剂(0.5％氢氧化钠+80％滑石粉+19.5％超细硫酸钡)1份，抗黄变剂(50％UV-5411+50％GX2921)1份，热稳定剂(GX2921)0.3份，增韧剂(EXL2691A)3份，润滑剂(EBS)0.5份，在中速搅拌机中混合5分钟，再与30份的玻璃纤维掺混，制备方法同实施例1，在此不再赘述。
实施例7、将PET(CZ-5011)64.5份(重量份数，下同)，成核剂(0.5％氢氧化钠+80％滑石粉+19.5％超细硫酸钡)1份，抗黄变剂(50％UV-5411+50％GX2921)0.7份，热稳定剂(GX2921)0.3份，增韧剂(EXL2691A)3份，润滑剂(EBS)0.5份，在中速搅拌机中混合5分钟，再与30份的玻璃纤维掺混，制备方法同实施例1，在此不再赘述。
实施例8、将PET(CZ-5011)64.4份(重量份数，下同)，成核剂(0.5％氢氧化钠+80％滑石粉+19.5％超细硫酸钡)0.8份，抗黄变剂(50％UV-5411+50％GX2921)1.0份，热稳定剂(GX2921)0.3份，增韧剂(EXL2691A)3份，润滑剂(EBS)0.5份，在中速搅拌机中混合5分钟，再与30份的玻璃纤维掺混，制备方法同实施例1，在此不再赘述。
实施例9、将PET(CZ-5011)64.6份(重量份数，下同)，成核剂(0.5％氢氧化钠+80％滑石粉+195％超细硫酸钡)0.7份，抗黄变剂(50％UV-5411+50％GX2921)0.9份，热稳定剂(GX2921)0.3份，增韧剂(EXL2691A)3份，润滑剂(EBS)0.5份，在中速搅拌机中混合5分钟，再与30份的玻璃纤维掺混，制备方法同实施例1，在此不再赘述。
实施例10，将PET(CZ-5011)为60份(重量份数，下同)，成核剂(0.5％氢氧化钠+80％滑石粉+19.5％超细硫酸钡)0.6份，抗黄变剂(50％UV-5411+50％GX2921)0.5份，热稳定剂(GX2921)1份，增韧剂(EXL2691A)5份，润滑剂(褐煤酸蜡)0.7份，在中速搅拌机中混合7分钟，再与30份的玻璃纤维掺混，经过熔融温度为200--260℃双螺杆挤出机挤出，造粒。其中各区段温度为：一区180℃，二区180℃，三区180℃，四区180℃，五区180℃，停留时间为60秒钟。
实施例11，将PET(CZ-5011)为65份(重量份数，下同)，成核剂(0.5％氢氧化钠+80％滑石粉+19.5％超细硫酸钡)0.6份，抗黄变剂(50％UV-5411+50％GX2921)0.9份，热稳定剂(GX2921)0.6份，增韧剂(乙烯-a烯烃共聚物)4份，润滑剂(EBS)0.6份，在中速搅拌机中混合3分钟，再与30份的玻璃纤维掺混，经过熔融温度为200--260℃双螺杆挤出机挤出，造粒。其中各区段温度为：一区260℃，二区260℃，三区260℃，四区255℃，五区260℃，停留时间为120秒钟。
性能评价方式及实行标准
将上述实施例1～9中完成造粒的粒子在130--150℃的鼓风烘箱中干燥4～6小时，再将干燥的粒子在80T注塑机上注塑制样，制样过程中保持模温在70～100℃之间。
拉伸强度按GB/T 1040标准进行检验。试样类型为I型，样条尺寸(mm)：170(长)×(20±0.2)(端部宽度)×(4±0.2)(厚度)，拉伸速度为50mm/min；弯曲强度和弯曲模量按GB 9341/T标准进行检验。试样类型为试样尺寸(mm)：(80±2)×(10±0.2)×(4±0.2)，弯曲速度为20mm/min；缺口冲击强度按GB/T1043标准进行检验。试样类型为I型，试样尺寸(mm)：(80±2)×(10±0.2)×(4±0.2)；缺口类型为A类，缺口剩余厚度为3.2mm；热变形温度按GB/T 1634.2标准进行检验，负载为1.80MPa.跨距为100mm。
实施例1-9原料重量份数及制成的复合材料性能表
| 组成(份) | 实施例1 | 实施例2 | 实施例3 | 实施例4 | 实施例5 | 实施例6 | 实施例7 | 实施例8 | 实施例9 |
| PET | 64.6 | 64.8 | 64.6 | 64.4 | 64.1 | 64.4 | 64.5 | 64.4 | 64.6 |
| 成核剂 | 0.5 | 0.8 | 0.9 | 1 | 1 | 1 | 1 | 0.8 | 0.7 |
| 热稳定剂 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| 抗黄变剂 | 0.9 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0 | 0.7 | 1.0 | 0.9 |
| 润滑剂 | 0.7 | 0.5 | 0.5 | 0.6 | 0.7 | 0.5 | 0.5 | 0.5 | 0.5 |
| 组成(份) | 实施例1 | 实施例2 | 实施例3 | 实施例4 | 实施例5 | 实施例6 | 实施例7 | 实施例8 | 实施例9 |
| 增韧剂 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| 玻纤 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| 热变形温度 | 105 | 190 | 205 | 225 | 215 | 224.0 | 223.1 | 223.7 | 223.6 |
| 缺口冲击强度 | 17.4 | 14.5 | 14.9 | 17.4 | 16.9 | 17.3 | 17.5 | 17.2 | 17.4 |
| 拉伸强度 | 146.8 | 138.9 | 142 | 146 | 143.2 | 142 | 140 | 142 | 145 |
| 弯曲模量 | 6200 | 7350 | 8800 | 8900 | 8800 | 8645 | 8550 | 8720 | 8600 |
| ΔE | 12.5 | 6.5 | 3.5 | 1.5 | 1.0 | 0.4 | 0.5 | 0.5 | 0.6 |
在本专利中使用自制成核剂用量达到原料总重量的1％时，耐热最高可达224度，当成核剂用量低于总重量的0.8％成核剂没有效果，以致耐热很低，黄变指数值非常大，当抗黄变剂用量达到总重量的1％时，PET热稳定性最好。
Claims (10)
1.一种耐热发夹隔热片专用复合材料，其特征在于，由下述重量份数的原料制成：
聚酯 60～65
成核剂 0.5～1
增韧剂 3～5
热稳定剂 0.3～1
抗黄变剂 0.5～1
润滑剂 0.5～0.7
玻璃纤维 30～50。
2.根据权利要求1所述的耐热发夹隔热片专用复合材料，其特征在于，所聚酯为聚对苯二甲酸乙二醇酯。
3.根据权利要求1所述的耐热发夹隔热片专用复合材料，其特征在于，所述的成核剂为由0.5％氢氧化钠、80％滑石粉和19.5％超细硫酸钡组成的混合物。
4.根据权利要求1所述的耐热发夹隔热片专用复合材料，其特征在于，所述的增韧剂为丙烯酸酯类核壳共聚物或乙烯-a烯烃共聚物。
5.根据权利要求1所述的耐热发夹隔热片专用复合材料，其特征在于，所述的热稳定剂为N，N′-双-(3-(3，5-二叔丁基-4-羟基苯基)丙酰基)己二胺。
6.根据权利要求1所述的耐热发夹隔热片专用复合材料，其特征在于，所述的抗黄变剂为紫外线吸收剂和抗氧剂的复配物。
7.根据权利要求1所述的耐热发夹隔热片专用复合材料，其特征在于，所述的润滑剂为脂肪酸酰胺或褐煤酸蜡。
8.根据权利要求1所述的耐热发夹隔热片专用复合材料，其特征在于，所述的玻璃纤维的直径为4～17微米。
9.一种耐热发夹隔热片专用复合材料的制备方法，其特征在于，包括以下步骤：
(1)称取聚酯、成核剂、增韧剂、热稳定剂、抗黄变剂、润滑剂、玻璃纤维；
(2)将聚酯、成核剂、增韧剂、热稳定剂、抗黄变剂、润滑剂中速混合；
(3)将步骤(2)中混好的原料与玻璃纤维掺混，经双螺杆挤出机熔融挤出，造粒。
10.根据权利要求9所述的耐热发夹隔热片专用复合材料的制备方法，其特征在于，包括以下步骤：
(1)按照重量份数称取聚酯、成核剂、增韧剂、热稳定剂、抗黄变剂、润滑剂、玻璃纤维；
(2)将聚酯、成核剂、增韧剂、热稳定剂、抗黄变剂、润滑剂在中速混合器中混合3-7分钟；
(3)将步骤(2)混好的原料与玻璃纤维掺混，经双螺杆挤出机熔融挤出，造粒；双螺杆挤出机工艺条件为：双螺杆挤出机一区温度为180～260℃，二区温度为180～260℃，三区温度为180～260℃，四区温度为180～260℃，五区180～260℃，混合料在螺杆中输送时间为1～2分钟。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102337010A (zh) * | 2011-05-31 | 2012-02-01 | 深圳市科聚新材料有限公司 | 一种耐热老化pet改性材料及其制备方法 |
| CN103483778A (zh) * | 2013-09-29 | 2014-01-01 | 苏州华周胶带有限公司 | 一种耐高温胶带基材 |
| CN106832806A (zh) * | 2016-12-26 | 2017-06-13 | 东莞市佳乾新材料科技有限公司 | 阻燃抑烟的pet材料以及制备方法 |
| CN107541025A (zh) * | 2016-06-28 | 2018-01-05 | 合肥杰事杰新材料股份有限公司 | 一种玻纤增强pet组合物及其制备方法 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337010A (zh) * | 2011-05-31 | 2012-02-01 | 深圳市科聚新材料有限公司 | 一种耐热老化pet改性材料及其制备方法 |
| CN103483778A (zh) * | 2013-09-29 | 2014-01-01 | 苏州华周胶带有限公司 | 一种耐高温胶带基材 |
| CN107541025A (zh) * | 2016-06-28 | 2018-01-05 | 合肥杰事杰新材料股份有限公司 | 一种玻纤增强pet组合物及其制备方法 |
| CN106832806A (zh) * | 2016-12-26 | 2017-06-13 | 东莞市佳乾新材料科技有限公司 | 阻燃抑烟的pet材料以及制备方法 |
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