CN102367311B - 一种低比重汽车保险杆用聚丙烯复合材料及其制备方法 - Google Patents
一种低比重汽车保险杆用聚丙烯复合材料及其制备方法 Download PDFInfo
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- CN102367311B CN102367311B CN2011102867050A CN201110286705A CN102367311B CN 102367311 B CN102367311 B CN 102367311B CN 2011102867050 A CN2011102867050 A CN 2011102867050A CN 201110286705 A CN201110286705 A CN 201110286705A CN 102367311 B CN102367311 B CN 102367311B
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- polypropylene composite
- polypropylene
- automobile bumper
- processing aid
- automobile
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- -1 polypropylene Polymers 0.000 title claims abstract description 38
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 35
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 230000005484 gravity Effects 0.000 title abstract description 6
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 229920001577 copolymer Polymers 0.000 claims abstract description 4
- 239000004611 light stabiliser Substances 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 13
- 229920000642 polymer Polymers 0.000 claims description 13
- 229920000178 Acrylic resin Polymers 0.000 claims description 8
- 239000004925 Acrylic resin Substances 0.000 claims description 8
- 239000003112 inhibitor Substances 0.000 claims description 7
- 230000002401 inhibitory effect Effects 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 238000007334 copolymerization reaction Methods 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N 10294-56-1 Chemical class 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OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Natural products 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[H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 235000012222 talc Nutrition 0.000 description 2
- 125000000383 tetramethylene group Chemical group 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- 229920002725 Thermoplastic elastomer Polymers 0.000 description 1
- 229920002397 Thermoplastic olefin Polymers 0.000 description 1
- 210000003135 Vibrissae Anatomy 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
Abstract
本发明公开了一种低比重汽车保险杆用聚丙烯复合材料及其制备方法，所述的聚丙烯复合材料按以下重量配比称量物料：聚丙烯树脂40-60%，三元嵌段共聚物30-50%，增韧剂5-15%，抗氧剂0.1-1%，光稳定剂0-1%，加工助剂0-1%。其制备方法是首先将聚丙烯树脂、增韧剂、三元嵌段共聚物加入高速混合机混合均匀，再加入抗氧剂、光稳定剂、加工助剂继续高搅混合，将混合均匀的预混料加入双螺杆挤出机挤出成型，既得。本发明聚丙烯复合材料做成的汽车保险杆在具有高流动性、高韧性的同时，也具备了低比重、低收缩的特性，对汽车减重具有重大意义。
Description
一种低比重汽车保险杆用聚丙烯复合材料及其制备方法
技术领域
[0001] 本发明涉及一种汽车保险杆用聚丙烯复合材料及其制备方法。
背景技术
[0002]目前汽车制造业正向降低车身自重、减轻能源消耗方向发展，各国汽车制造厂商都致力于汽车的塑料化，以减轻车重。
[0003] 聚丙烯因其优异的性价比，在汽车内外饰件中得到广泛应用，特别是应用在汽车的前后保险杠上。从1976年，意大利FIAT公司采用PP与Ε/P共聚物的共混料制作世界上第一副保险杠以来，聚丙烯作为一种物美价廉的新型通用塑料在汽车领域内应用广泛，目前世界上80%以上的保险杠都是采用以聚丙烯为基体的TPO材料制作。但由于聚丙烯的收缩较大，纯聚丙烯树脂的收缩率在1.4%-1.6%之间，尺寸稳定性较差，影响最终制品的装配。目前，应用在汽车保险中的聚丙烯复合材料一般是通过添加无机矿物、玻璃纤维、晶须以及成核剂等方法来控制其收缩，而无机矿物的加入使得聚丙烯复合材料的重量显著增力口，不利于汽车减重。
[0004] 中国发明专利申请CN102002186A公开了一种矿物填充的低收缩率改性聚丙烯复合材料及其制备方法，其配方组分包括:聚丙烯40-85%，聚乙烯5-10%，弹性体5-20，矿物填充5-30%，相容剂0.1-3，助剂0.1-3。该发明专利除通过加入矿物填充外还加入了聚乙烯树脂来控制收缩，但由于聚乙烯模量低，影响了最终制品的硬度。
[0005] 中国发明专利申请CN101838423A公开了一种薄壁保险杠用改性聚丙烯材料及其制备方法，其配方组分为:聚丙烯50-90%，增韧剂5-20%，无机矿物10-15%，矿物纤维5_15%，相容剂1_5%，加工助剂1-5%。该发明通过无机矿物及矿物纤维来控制收缩，由于矿物纤维的加入，一方面增加了制品的重量，同时也影响了制品的表面质量，不利于喷涂等后续工艺。
[0006] 中国发明专利申请CN101993563A公开了一种汽车保险杠聚丙烯专用料的制备方法，该发明通过成核剂NAll及无机矿物提升制品模量并控制收缩，而成核剂的加入对整个制品的韧性有较大负面作用，影响了最终制品的冲击性能。
发明内容
[0007] 本发明的目的是为克服上述现有技术缺点，提供一种低比重、低收缩、尺寸稳定性好的汽车保险杆用聚丙烯复合材料及其制备方法。
[0008] 为了实现上述目的，本发明采用如下技术方案:
[0009] 一种低比重汽车保险杆用聚丙烯复合材料，该复合材料由以下组分按重量百分比组成:
[0010] 聚丙烯树脂:40-60%,
[0011] 三元嵌段共聚物:30-50%
[0012]增韧剂:5-15%，[0013]抗氧剂:0.1-1%，
[0014] 光稳定剂:0_1%，
[0015] 加工助剂:0_1%。
[0016] 所述的聚丙烯树脂为均聚聚丙烯、乙丙嵌段共聚聚丙烯或者两种树脂的混合物。
[0017] 所述的热塑性弹性体包括乙烯-辛烯共聚物、乙丙橡胶(EPDM)中的一种或两者的混合物。
[0018] 所述的三元嵌段共聚物为乙烯-丙烯-1 丁烯三元嵌段共聚物，所述的乙烯-丙烯-1 丁烯三元嵌段共聚物为乙烯、丙烯、1-丁烯三种单体以嵌段共聚的方式聚合而成。区别于现有技术的乙烯、丙烯、1- 丁烯三元无规共聚，这种乙烯-丙烯-1 丁烯三元嵌段共聚物最突出的特点是具有低收缩性能。
[0019] 所述的抗氧剂包括受阻酚类、亚磷酸酯类、硫代类中的一种或其中几种的混合物。
[0020] 所述的光稳定剂包括受阻胺类光稳定剂、光屏蔽剂、紫外线吸收剂、猝灭剂中的一种或其中几种的混合物。
[0021] 所述的加工助剂包括润滑剂、色粉、荧光增白剂中的一种或其中几种的混合物。
[0022] 上述低比重汽车保险杆用聚丙烯复合材料的制备方法，包括以下步骤:
[0023] ( I)按上述 配比称量原料；
[0024] (2)将聚丙烯树脂、三元嵌段共聚物、增韧剂在800-1500转/分钟下高速混合5_10分钟，然后加入抗氧剂、光稳定剂、加工助剂在800-1500转/分钟下高速混合5-10分钟，高速混合机的温度控制在55-65°C，得到预混料；
[0025] (3)将上述预混料从双螺杆挤出机主喂料口加入，熔融挤出造粒，挤出机各段温度设定为 200°c、210°c、22(rc、22(rc、22(rc、21(rc，机头温度 220°C，螺杆转速为 300-600 转
/分钟。
[0026] 与现有技术本相比，本发明具有以下有益效果:
[0027] 现有技术通过加入矿物填充的方法控制收缩率，其致命缺点是矿物填充的加入大幅度增加了制品的重量，不利于汽车减重。本发明应用以收缩率仅为1.0-1.1%的新型乙烯-丙烯-1 丁烯三元嵌段共聚物为基体树脂，可以不加矿物填充而使收缩率满足装配要求，避免了矿物填充的加入大幅增加制品重量的问题，从而制得了一种低比重适用于汽车保险杆的聚丙烯复合材料，对汽车减重具有重大意义。
具体实施方式
[0028] 下面将结合实施例来说明本发明的具体实施方式及所达到的效果
[0029] 实施例1-5
[0030] 按表I提供的组分及重量配比称量物料，首先将聚丙烯树脂、三元嵌段共聚物、增韧剂在1000转/分钟的高速混合机中混合10分钟，再加入抗氧剂1010、抗氧剂168、光稳定剂770、加工助剂在1000转/分钟的高速混合机中混合5分钟，高速混合机的温度控制在55-650C。将混合均匀的预混料在双螺杆挤出机中熔融挤出造粒得到复合材料，挤出机各段温度设定为200°C、210°C、220°C、220°C、220°C、210°C，机头温度220°C，螺杆转速为400转/分钟。[0031] 表1:实施例1-5的组分及配比
[0032]
[0033] 注:表1中数据均为重量百分比计算；
[0034] 助剂包括抗氧剂、光稳定剂和加工助剂；
[0035] 对比例1、对比例2中的矿物填充为滑石粉，
[0036] 表2:实施例1-5物理性能
[0037]
[0038] 注:表2中各项性能测试标准如下:
[0039] IZOD缺口冲击强度根据IS0180 (23°C )进行测试，单位KJ/m2 ；
[0040] 熔融指数根据IS01133(230°C，2.16kg)进行测试，单位g/10min ；
[0041] 收缩率根据GB/T15585-1995进行测试，单位％ ；
[0042] 比重根据ISOl 183-1进行测试，单位g/cm3
Claims (7)
1.一种汽车保险杆用聚丙烯复合材料，其特征在于，该复合材料由以下组分按重量百分比组成: 聚丙烯树脂:40-60%， 三元嵌段共聚物:30-50%， 增韧剂=5-15%, 抗氧剂:0.1-1%， 光稳定剂=0-1%, 加工助剂:0_1%， 所述的三元嵌段共聚物为乙烯-丙烯-1 丁烯三元嵌段共聚物； 所述增韧剂为乙烯-辛烯共聚物。
2.根据权利要求1所述的汽车保险杆用聚丙烯复合材料，其特征在于，所述的聚丙烯树脂为均聚聚丙烯、乙丙嵌段共聚聚丙烯或者两种树脂的混合物。
3.根据权利要求2所述的汽车保险杆用聚丙烯复合材料，其特征在于，所述的均聚聚丙烯树脂熔融指数为l-100g/10min,所述的乙丙嵌段共聚聚丙烯熔融指数l-100g/10min。
4.根据权利要求1所述的汽车保险杆用聚丙烯复合材料，其特征在于，所述的抗氧剂包括受阻酚类、亚磷酸酯类、硫代类中的一种或其中几种的混合物。
5.根据权利要求1所述的汽车保险杆用聚丙烯复合材料，其特征在于，所述的光稳定剂包括受阻胺类光稳定剂、光屏蔽剂、紫外线吸收剂、猝灭剂中的一种或其中几种的混合物。
6.根据权利要求1所述的汽车保险杆用聚丙烯复合材料，其特征在于，所述的加工助剂包括润滑剂、色粉、荧光增白剂中的一种或其中几种的混合物。
7.权利要求1所述汽车保险杆用聚丙烯复合材料的制备方法，其特征在于包括以下步骤: (O按上述配比称量原料； (2)将聚丙烯树脂、乙烯-丙烯-1丁烯三元嵌段共聚物、增韧剂在800-1500转/分钟下高速混合5-10分钟，然后加入抗氧剂、光稳定剂、加工助剂在800-1500转/分钟下高速混合5-10分钟，高速混合机的温度控制在55-65°C，得到预混料； (3)将上述预混料从双螺杆挤出机主喂料口加入，熔融挤出造粒，挤出机各段温度设定为 200°C、210°C、220V、220°C、220°C、210°C，机头温度 220 V，螺杆转速为 300-600 转 / 分钟。
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Low specific gravity polypropylene composite material for automobile bumper use and its preparation method Effective date of registration: 20161228 Granted publication date: 20130612 Pledgee: China Merchants Bank Limited by Share Ltd Binjiang Guangzhou East Branch Pledgor: GUANGZHOU SUPER-DRAGON ENGINEERING PLASTICS CO., LTD. Registration number: 2016990001189 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20161228 Granted publication date: 20130612 Pledgee: China Merchants Bank Limited by Share Ltd Binjiang Guangzhou East Branch Pledgor: GUANGZHOU SUPER-DRAGON ENGINEERING PLASTICS CO., LTD. Registration number: 2014990000975 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190522 Granted publication date: 20130612 Pledgee: China Merchants Bank Limited by Share Ltd Binjiang Guangzhou East Branch Pledgor: GUANGZHOU SUPER-DRAGON ENGINEERING PLASTICS CO., LTD. Registration number: 2016990001189 |