CN1058276C - 注射团状模塑料 - Google Patents

注射团状模塑料 Download PDF

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Publication number
CN1058276C
CN1058276C CN97116801A CN97116801A CN1058276C CN 1058276 C CN1058276 C CN 1058276C CN 97116801 A CN97116801 A CN 97116801A CN 97116801 A CN97116801 A CN 97116801A CN 1058276 C CN1058276 C CN 1058276C
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injecting
initiator
mixed fillers
lump
weight
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CN1176974A (zh
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张德镛
李新华
祁立民
王秀梅
陈淳
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BEIJING GLASS FIBER REINFORCED
Beijing glass fibre reinforced plastic composite material Co.,Ltd.
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Glass-Fiber Reinforced Plastic Research And Design Inst State Building Materia
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Abstract

一种注射团状模塑料，由聚酯树脂、乙烯基树脂、PVAC、丁腈橡胶、引发剂、填料等组成，该料贮存时间长、引发快、固化时间短、流动性好、注射工艺性也好，能生产轿车等汽车前大灯反光罩，其生产效率高，成本也适宜。

Description

注射团状模塑料
本发明是涉及一种改进型的热固性注射团状模塑料(国际通称注射BMC)，该模塑料用以生产轿车等汽车前大灯反光罩，也可适用于要求A级表面、耐高热变形、高抗冲要求的各类玻璃钢制品，如塑封电机、电熨斗外壳等家用电器及当代办公自动化设备。
模压BMC工艺的应用，在80年代初期国际上已有报导，到了80年代中期又快速掀起注射BMC工艺的应用，用以生产具有A级表面的制品，广泛用于汽车及家电等部门。注射BMC其主要组分有粘接剂、添加剂、引发剂、阻聚剂、增稠剂、颜料糊、填料、玻纤增强材料等。其中各组分的性能对制品A级表面影响很大，特别是添加剂对模塑料的流动性、对制品的低收缩、A级表面低波纹作用很大。这类研究国际上一直在探讨之中。
本发明目的是改进注射BMC配方，使其具有更好的流动性及工艺性，并且也提高制品机械性能，又生产效率高，成本也适宜。
本发明的特征是：
(1)配方                                  重量份比
不饱和聚酯树脂                             60-80
乙烯基树脂                                 25-50
PVAC                                       35-50
含羧基丁腈橡胶                             0.3-0.4
引发剂1 过氧化-乙-乙基
      已酸特丁酯                           0.3-0.4
引发剂2 1.1-双(特丁基过氧
      化)-3.3.5-三甲基环已烷               1.0-1.5
KH-550                                     1.8-2.4
MgO                             0.4-0.6
硬酯酸锌                        3.0-4.5
填料浸润剂BYK-980               0.8-1.2
无机混合填料CaCo3瓷土Al(oH)3 190-250
短切玻纤(1/4″)                 50-70
颜料糊                          0.4-1.0
(2)本配方中各组分的选用及机理：
a)选用高活性间苯型聚酯树脂为粘接剂，它具有热变形温度高，其树脂浇注体热变形温度大于120℃，综合性能优越；再与乙烯基树脂及含羧基丁腈橡胶增韧，共同反应形成网络结构，使反光罩表面无裂纹瑕点，并具有较高抗冲击韧性及抗冲击强度。
b)采用了高活性快速交联的引发剂1和中活性的固化引发剂2的混合引发剂，使产品具有贮存时间长、引发快、固化时间短等特性。
c)采用了复合填料及不同粒度的填料混合而成，改善了配合料的流变特性，提高产品表面质量。
d)本配方中把KH-550与MgO配合使用，以控制注射BMC的流动性。
3.本配方的制备工艺：
(1)先把不饱和聚酯树脂、乙烯基树脂、PVAC、含羧基丁腈橡胶、引发剂1、2等液体，按重量份比称量后，倒入搅拌机中，搅拌3分钟。
(2)加入硬酯酸锌、KH-550、MgO，按重量份比称量后加入搅拌机中搅拌3分钟。
(3)再加入按重量份比的无机混合填料及填料浸润剂于搅拌机中搅拌3分钟。
(4)最后加入短切玻纤捏和均匀。
(5)产品密封包装出厂。
(6)用注射工艺使用本配方产品，制作轿车前大灯反光罩。
本发明优点；
1.本注射BMC配方中运用了网络结构，低波纹低收缩组分，提高了产品的抗冲强度及无裂缝，达到“A”级表面质量要求，该模塑料贮存时同长，在30℃以下可贮存35天以上，又引发快、固化时同短，其予塑时间在5-10秒，固化时间为50-90秒。
2.本注射BMC料具有良好的流动性及工艺特性，在注射工艺中，无料沾粘模具及流道，生产效率高，成本也适宜，能满足生产反光罩后道工序的要求，并且制品具有A级表面的综合特性。
实施例：
本注射BMC料，已用于夏利轿车前大灯反光罩，其制品的特性良好，检测数据如下：
收缩率            ＜0.05％；
表面粗糙度        ＜0.2μm；
达到A级表面要求；
表面无气泡、裂纹、瑕点等缺陷；
热变形温度       ≥250℃；
无缺口冲击强度   ＞1.5J/cm2；
采用法国标准的老化试验，经过5个循环高低温试验，无异常变化，尺寸稳定，满足轿车前大灯反光罩的光型要求。

Claims (5)

1.一种注射团状模塑料，其特征在于由以下原料配制而成(重量份比)：
          不饱和聚酯树脂                        60～80
          乙烯基树脂                            25～50
          PVAC                                 35～50
          含羧基丁腈橡胶                        0.3～0.4
          引发剂1过氧化-乙-乙基已酸特丁酯        0.3～0.4
          引发剂21.1-双(特丁基过氧
                化)-3.3.5-三甲基环已烷          1.0～1.5
          KH-550                               1.8～2.4
          MgO                                  0.4～0.6
          硬酯酸锌                              3.0～4.5
          填料浸润剂BYK-980                     0.8～1.2
          无机混合填料CaCO3瓷土Al(OH)3        190～250
          短切玻纤(1/4″)                       50～70
          颜料糊                                0.4～1.0。
2.根据权利要求1所述的原料配方中无机混合填料是CaCO3。
3.根据权利要求1所述的原料配方中无机混合填料是瓷土。
4.根据权利要求1所述的原料配方中无机混合填料是Al(OH)3。
5.根据权利要求1、或2、或3、或4中所述的注射团状模塑料，其特征在于是由以下工艺制备而成：
(1)先把不饱和聚酯树脂、乙烯基树脂、PVAC、含羧基丁腈橡胶、引发剂1、2等液体，按重量份比称量后，倒入搅拌机中，搅拌3分钟；
(2)加入硬酯酸锌、KH-550、MgO，按重量份比称量后加入搅拌机中搅拌3分钟；
(3)再加入按重量份比的混合填料及填料浸润剂于搅拌机中搅拌3分钟；
(4)最后加入短切玻纤捏和均匀；
(5)产品密封包装出厂。
CN97116801A 1997-08-26 1997-08-26 注射团状模塑料 Expired - Fee Related CN1058276C (zh)

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CN1730550B (zh) * 2005-08-10 2011-07-27 卢建国 车灯型零收缩高平整玻纤增强材料及其制造方法
CN100540600C (zh) * 2005-12-15 2009-09-16 瓦克化学股份公司 彩色玩具气球
CN101402788B (zh) * 2008-11-11 2011-08-03 福建山亚开关有限公司 改性热固性团状模压塑料材料及加工方法
DE102011003382A1 (de) 2011-01-31 2012-08-02 United Initiators Gmbh & Co. Kg Peroxidabmischungen für die beschleunigte Vernetzung von Ethylenvinylacetat
CN102344656B (zh) * 2011-07-20 2012-09-19 江苏兆鋆新材料科技有限公司 一种高增韧团状模塑料
CN103265800A (zh) * 2013-05-27 2013-08-28 米库玻璃纤维增强塑料泰州有限责任公司 汽车车灯用团状模塑料及其制造方法
CN105365148A (zh) * 2014-08-26 2016-03-02 刘平 一种车灯反射镜制造工艺
CN106634100A (zh) * 2016-12-23 2017-05-10 江苏玖尚新材料有限公司 一种用于管道穿越保护的紫外光固化片材
CN108395688A (zh) * 2018-03-14 2018-08-14 河南科技大学 具有较长储存期的up/氧化铝导热绝缘材料及其制备方法
CN110003679A (zh) * 2019-02-28 2019-07-12 苏州卡利肯新光讯科技有限公司 一种团状膜反射镜及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340528A (en) * 1980-10-31 1982-07-20 Eastman Kodak Company Pigmented polyolefin compositions
WO1993008231A1 (en) * 1991-10-22 1993-04-29 The British Petroleum Company Plc Polymer blends
WO1997006210A1 (de) * 1995-08-04 1997-02-20 Basf Aktiengesellschaft Thermoplastische formmassen auf der basis von ethylenpolymerisaten und thermoplastischen polyestern

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340528A (en) * 1980-10-31 1982-07-20 Eastman Kodak Company Pigmented polyolefin compositions
WO1993008231A1 (en) * 1991-10-22 1993-04-29 The British Petroleum Company Plc Polymer blends
WO1997006210A1 (de) * 1995-08-04 1997-02-20 Basf Aktiengesellschaft Thermoplastische formmassen auf der basis von ethylenpolymerisaten und thermoplastischen polyestern

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