CN1126784C - 一种低收缩率防翘曲玻璃纤维增强聚丙烯 - Google Patents

一种低收缩率防翘曲玻璃纤维增强聚丙烯 Download PDF

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CN1126784C
CN1126784C CN 00115313 CN00115313A CN1126784C CN 1126784 C CN1126784 C CN 1126784C CN 00115313 CN00115313 CN 00115313 CN 00115313 A CN00115313 A CN 00115313A CN 1126784 C CN1126784 C CN 1126784C
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shrinkage ratio
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CN1315465A (zh
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陈媛
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Liaoning Liaojie Science & Technology Co ltd
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Shanghai Genius Advanced Materials Group Co Ltd
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Abstract

本发明涉及一种新型玻璃纤维增强聚丙烯，其特征在于：它包括以下组份及含量(重量份)：共聚聚丙烯200～700，苯乙烯类树脂100～300，相容剂50～200，玻璃纤维1～300，偶联剂1～10，交联剂1～10，抗氧剂1～3，分子量调节剂1～10，其它助剂0～3，无机填料1～300。与现有技术相比，本发明具有收缩率低、横纵收缩率均匀、表面无翘曲等优点。适合于制造精密部件。

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一种低收缩率防翘曲玻璃纤维增强聚丙烯
本发明涉及有机高分子材料，尤其涉及一种低收缩率防翘曲玻璃纤维增强聚丙烯。
玻璃纤维增强的聚丙烯(PP)材料具有高刚性、耐热性、耐化学腐蚀、耐候性及尺寸稳定等优点，跳出了聚丙烯原来的应用范围，进入了工程塑料领域，可在一定范围内代替铜、钢、木材、尼龙、聚甲醛、聚碳酸酯等，现已广泛应用于汽车、电器、电机、机械、家电等领域。由于PP树脂中玻璃纤维的长径比远远大于1(纤维长度与纤维横截面直径之比)，因此在制品成型收缩时，横纵收缩率不同，结果导致制品出现翘曲，若制品中有内孔，会出现孔径不圆的现象，使之不能应用于尺寸精密部件，从而大大限制了该材料的应用范围。
本发明的目的就是为了克服上述现有技术存在的缺陷而提供一种横纵收缩率均匀的低收缩率防翘曲玻璃纤维增强聚丙烯。
本发明的目的可以通过以下方式来实现：一种低收缩率防翘曲玻璃纤维增强聚丙烯，其特征在于：它包括以下组份及含量(重量份)：
          共聚聚丙烯                       200～700
          苯乙烯类树脂                     100～300
          相容剂                           50～200
          玻璃纤维                         1～300
          偶联剂                           1～10
          交联剂                           1～10
          抗氧剂                           1～3
          分子量调节剂                     1～10
          其它助剂                         0～3
          无机填料                         1～300
所述的共聚聚丙烯熔融指数为15.0～25.0g/10min，拉伸强度≥20MPa。
所述的苯乙烯类树脂采用丙烯腈、苯乙烯高聚物树脂，或苯乙烯均聚物或共聚物类非结晶树脂。
所述的相容剂采用聚丙烯与不饱和酸、酸酐接枝聚合物。
所述的玻璃纤维为无碱玻璃纤维，其公制号数为1000～2500特克斯，直径为10～16微米。
所述的偶联剂为硅烷类同系物，可以是KH550。
所述的交联剂采用双马来酰亚胺。
所述的抗氧剂为受阻酚类抗氧剂，可以是抗氧剂CA、抗氧剂1010。
所述的无机填料为云母、滑石粉、碳酸钙类无机材料。
所述的分子量调节剂为过氧化二异丙苯、过氧化二苯甲酰类的丁酮或乙酸乙酯溶液，
所述的其它助剂可以是热稳定剂或脱模剂，例如，硬酯酸钙、二硫化钼。
与现有技术相比，本发明采用共聚聚丙烯作为基体树脂，用玻璃纤维增强，为了防止成品翘曲，在复合体系中加入苯乙烯类非结晶树脂，可以使材料的收缩率稳定在0.5％以下(纯聚丙烯的成型收缩率为1.5％，一般玻璃纤维增强的聚丙烯的成型收缩率为0.5～0.7％)，且纵横收缩率之差在±0.02％范围之内(一般玻璃纤维增强的聚丙烯材料≥0.1％)。本发明在体系中加入无机填料，进一步降低了成型收缩率。
采用以上技术手段所得到的一系列玻璃纤维增强聚丙烯材料，其拉伸、冲击强度和耐热性等机械性能与一般玻璃纤维增强聚丙烯材料相仿，但收缩率却低于一般玻璃纤维增强聚丙烯材料，且纵横收缩均匀，表面无翘曲。适合于制造精密部件。
下面结合实施例，对本发明作进一步详细说明。
实施例1：
以共聚聚丙烯为基础材料，苯乙烯类树脂采用马来酸酐接枝苯乙烯共聚物(AS-g-MAH)，用马来酸酐接枝聚丙烯(PP-g-MAH)为相容剂，无碱玻璃纤维作为增强料，其它共混物组份的含量(重量)如下：
                                              单位：公斤
      共聚聚丙烯                         300
      AS-g-MAH                           150
      PP-g-MAH                           150
                 玻璃纤维                       100
                 KH550                          5
                 双马来酰亚胺                   10
                 抗氧剂1010                     1
                 其它助剂                       1
                 云母                           250
将除玻璃纤维外的上述组份置于高混机中混合2～3分钟，然后挤出造粒，在挤出过程中加入玻璃纤维，干燥后注塑成标准样条，供性能测试，性能如下：
熔体流动速率(230℃，2.16kG)g/10min     6.4
拉伸强度 MPa     46
Charpy 冲击强度 KJ/m2     15.0
Charpy 缺口冲击强度 KJ/m2(25℃)     8.4
弯曲强度 MPa     84
弯曲模量 MPa     6440
收缩率％     横     0.30
    纵     0.30
实施例2～6
以共聚聚丙烯为基础材料，苯乙烯类树脂采用马来酸酐接枝苯乙烯共聚物(AS-g-MAH)和苯乙烯高聚物(AS)，用马来酸酐接枝聚丙烯(PP-g-MAH)为相容剂，无碱玻璃纤维作为增强料，其它共混物组份的含量(重量)如下：
                                         单位：公斤
              2        3        4        5       6
共聚聚丙烯    200      280      300      300     580
AS-g-MAH      -        170      100      100     120
AS            300      -        100      150     -
PP-g-MAH      50       150      200      100     150
玻璃纤维      150      100      200      100     50
  KH550             8       5       7       5      5
  双马来酰亚胺      5       10      8       10     10
  抗氧剂1010        2       1       1       1      1
  硬酯酸钙          1       1       -       1      1
  二硫化钼          1       -       -       -      -
  过氧化二异丙苯    2       -       4       -      7
  乙酸乙酯溶液      -       2       -       5      -
  云母              300     250     100     250    -
  滑石粉            -       -       -       -      100
将除玻璃纤维外的上述组份置于高混机中混合2～3分钟，然后挤出造粒，在挤出过程中加入玻璃纤维，干燥后注塑成标准样条，供性能测试，性能如下：
2 3 4 5 6
熔体流动速率(230℃，2.16kGg/10min   5.53   6.2   4.93   8.9   9.5
拉伸强度 MPa   47.0   45.3   52.0   43.0   41.5
Charpy 冲击强度KJ/m2   14.2   16.3   16.9   17.6   18.4
Charpy 缺口冲击强度 KJ/m2(25℃)   7.9   8.7   9.4   9.6   7.6
弯曲强度 MPa   84.9   81.9   100   74.0   69.1
弯曲模量 MPa   6613.6   7003.6   5996.3   5996.3   5697.4
收缩率％   横   0.25   0.28   0.28   0.26   0.38
  纵   0.25   0.27   0.26   0.26   0.38

Claims (10)

1.一种低收缩率防翘曲玻璃纤维增强聚丙烯，其特征在于：它包括以下组份及含量(重量份)：
      共聚聚丙烯                              200～700
      苯乙烯树脂                              100～300
      相容剂                                  50～200
      玻璃纤维                                1～300
      偶联剂                                  1～10
      交联剂                                  1～10
      抗氧剂                                  1～3
      分子量调节剂                            1～10
      其它助剂                                0～3
      无机填料                                1～300
2.根据权利要求1所述的一种低收缩率防翘曲玻璃纤维增强聚丙烯，其特征在于：所述的共聚聚丙烯熔融指数为15.0～25.0g/10min，拉伸强度≥20MPa。
3.根据权利要求1所述的一种低收缩率防翘曲玻璃纤维增强聚丙烯，其特征在于：所述的苯乙烯树脂采用丙烯腈、苯乙烯高聚物树脂，或苯乙烯均聚物或共聚物非结晶树脂。
4.根据权利要求1所述的一种低收缩率防翘曲玻璃纤维增强聚丙烯，其特征在于：所述的相容剂采用聚丙烯与不饱和酸、酸酐接枝聚合物。
5.根据权利要求1所述的一种低收缩率防翘曲玻璃纤维增强聚丙烯，其特征在于：所述的玻璃纤维为无碱玻璃纤维，其公制号数为1000～2500特克斯，直径为10～16微米。
6.根据权利要求1所述的一种低收缩率防翘曲玻璃纤维增强聚丙烯，其特征在于：所述的偶联剂为硅烷同系物。
7.根据权利要求1所述的一种低收缩率防翘曲玻璃纤维增强聚丙烯，其特征在于：所述的交联剂采用双马来酰亚胺。
8.根据权利要求1所述的一种低收缩率防翘曲玻璃纤维增强聚丙烯，其特征在于：所述的抗氧剂为受阻酚抗氧剂。
9.根据权利要求1所述的一种低收缩率防翘曲玻璃纤维增强聚丙烯，其特征在于：所述的无机填料为云母、滑石粉、碳酸钙无机材料。
10.根据权利要求1所述的一种低收缩率防翘曲玻璃纤维增强聚丙烯，其特征在于：所述的分子量调节剂为过氧化二异丙苯、过氧化二苯甲酰的丁酮或乙酸乙酯溶液。
CN 00115313 2000-03-30 2000-03-30 一种低收缩率防翘曲玻璃纤维增强聚丙烯 Expired - Lifetime CN1126784C (zh)

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EP2002952A1 (en) * 2007-06-11 2008-12-17 Total Petrochemicals Research Feluy Method for controlling shrinkage and warpage in rotomoulding applications
CN102181100B (zh) * 2011-03-18 2012-12-19 四川长虹电器股份有限公司 玻纤增强共聚聚丙烯复合材料及其制备方法
CN102329454B (zh) * 2011-10-18 2013-10-16 深圳市科聚新材料有限公司 聚丙烯复合材料及其制备方法与应用
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CN102807710B (zh) * 2012-08-15 2015-05-27 科沃斯机器人科技(苏州)有限公司 一种玻璃纤维增强聚丙烯复合材料及其制备方法
CN102911437B (zh) * 2012-11-12 2014-07-02 上海清远管业科技有限公司 皮芯结构的玻纤增强树脂复合材料及其制造方法
CN103012968A (zh) * 2012-11-21 2013-04-03 合肥杰事杰新材料股份有限公司 一种耐候玻纤增强聚丙烯复合材料及其制备方法
CN103589060B (zh) * 2013-10-29 2016-02-10 天津金发新材料有限公司 玻纤增强聚丙烯/聚苯乙烯合金复合材料及其制备与应用
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