WO2022016787A1 - 一种汽车仪表板聚丙烯复合材料及其制备方法 - Google Patents

一种汽车仪表板聚丙烯复合材料及其制备方法 Download PDF

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WO2022016787A1
WO2022016787A1 PCT/CN2020/136306 CN2020136306W WO2022016787A1 WO 2022016787 A1 WO2022016787 A1 WO 2022016787A1 CN 2020136306 W CN2020136306 W CN 2020136306W WO 2022016787 A1 WO2022016787 A1 WO 2022016787A1
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polypropylene
parts
composite material
instrument panel
polypropylene composite
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French (fr)
Inventor
俞飞
吴亦建
叶南飚
黄险波
吴国峰
赖昂
丁正亚
杨波
罗忠富
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Kingfa Science and Technology Co Ltd
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Kingfa Science and Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/14—Copolymers of propene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/005—Additives being defined by their particle size in general
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/06—Polymer mixtures characterised by other features having improved processability or containing aids for moulding methods
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE

Definitions

  • the invention relates to the field of polymer material modification, in particular to a low-temperature blasting automobile instrument panel polypropylene composite material with good appearance and a preparation method thereof.
  • the formulation system of instrument panel materials is mostly composed of talcum powder, ordinary ethylene-propylene block copolymer polypropylene (dispersity index PDI is 2 to 5), antioxidants, lubricants, light stabilizers Among them, high-density polyethylene (HDPE) is also used for polypropylene toughening and modification, but the injection-molding or drawing-grade HDPE (MFR is generally 1-8g/10min) is used, and there is no report of useful film-grade HDPE (MFR). Generally 0.04 ⁇ 0.08g/10min) to modify polypropylene.
  • the purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a polypropylene composite material for low temperature blasting automobile instrument panels with good appearance.
  • the technical solution adopted in the present invention is: a polypropylene composite material for automobile instrument panel, comprising the following components in parts by weight: 20-62 parts of polypropylene A, 10-20 parts of polypropylene B, and 10-20 parts of filler.
  • the polypropylene A is ethylene, propylene
  • the dispersibility index PDI of the polypropylene A is 5-10
  • the polypropylene B is a ternary random copolymer polypropylene synthesized from 1-butene, ethylene and propylene
  • the PDI was determined by gel permeation chromatography.
  • the present invention can prepare a polypropylene composite material for instrument panels with good appearance and low temperature blasting, which can meet the requirements of hard plastic instruments with good appearance and low temperature blasting promoted by the automobile industry at the present stage. Board parts requirements.
  • PDI Polymer Dispersibility Index
  • the high molecular weight of polymer materials is usually not uniform, and it is essentially a mixture.
  • the average molecular weight is used to describe the molecular weight of the polymer.
  • the average molecular weight can be divided into number average molecular weight, weight average molecular weight and viscosity average molecular weight.
  • weight average molecular weight and number average molecular weight The ratio is called the polydispersity index, and the value is greater than 1; the larger the PDI, the wider the molecular weight distribution; the smaller the PDI, the more uniform the molecular weight distribution; the PDI of the present application is measured by gel permeation chromatography (GPC).
  • GPC gel permeation chromatography
  • the polyethylene is high-density polyethylene, and the MFR of the polyethylene is 0.04-0.08 g/10min under the test conditions of 190° C. and 2.16 kg.
  • the polypropylene composite material for automobile dashboard further comprises 0.5-2.5 parts by weight of a scratch-resistant agent, wherein the scratch-resistant agent is a silicone-based scratch-resistant agent or an amide-based scratch-resistant agent.
  • a scratch-resistant agent is a silicone-based scratch-resistant agent or an amide-based scratch-resistant agent.
  • the filler is at least one of basic magnesium sulfate whiskers and talc.
  • the diameter of the basic magnesium sulfate whiskers is not more than 3 ⁇ m, the length of the basic magnesium sulfate whiskers is not less than 25 ⁇ m; the D50 of the talc powder is not more than 6 ⁇ m.
  • the toughening agent is an ethylene-octene random copolymer or an ethylene-octene block copolymer.
  • the lubricant is at least one of amide-based lubricants and stearate-based lubricants; the antioxidant is at least one of hindered phenolic antioxidants and phosphite-based antioxidants
  • the light stabilizer is a hindered amine light stabilizer.
  • the present invention also provides a preparation method of the polypropylene composite material for the automobile instrument panel, the method is:
  • the speed of the high-speed mixer is 200-300 rpm; then add the fillers into the high-speed mixer and mix for 3-5 minutes.
  • the rotating speed of the machine is 200-300 rpm to obtain a mixed material; then the mixed material is added to a twin-screw extruder for melt extrusion, granulation, drying, cooling and packaging to obtain an automobile dashboard polypropylene composite material;
  • the temperature of the twin-screw extruder is 170°C, 200°C, 200°C, 210°C, 210°C, 205°C, 205°C, 205°C, 200°C, 200°C from the feeding section to the head.
  • vacuum degree is not greater than -0.08MPa.
  • the present invention can satisfy both good appearance and low temperature blasting performance by using polypropylene A and polypropylene B as the base material of modified PP;
  • the present invention can reduce the glossiness and low temperature toughness of the material by using special polyethylene to modify the PP, which is of great benefit to the appearance of the composite material and low temperature blasting;
  • the production process of the present invention is simple and suitable for mass production.
  • PDI is measured by gel permeation chromatography (GPC) method; density is tested according to ISO 1183-1 standard; tensile property is tested according to ISO 527-2 standard, and the tensile speed is 50mm/min ; Bending performance is tested according to ISO 178 standard, and the bending speed is 2mm/min; Izod beam notched impact is tested according to ISO 180 standard; Low temperature -35°C multiaxial impact is tested according to ISO 6603-2 standard (2mm thickness square plate evaluation, 4.4 m/s impact speed, it is generally considered that the damage form is YD&YS, which can meet the blasting requirements); scratch resistance is in accordance with Shanghai Volkswagen's PV3952 "Scratch Resistance Evaluation of Plastic Interiors" standard, 10N
  • grade Appearance description 1 It is completely invisible to the naked eye within 1 meter 2 It is completely invisible to the naked eye within 0.8 meters, and clearly visible to the naked eye beyond 0.8 meters 3 It is completely invisible to the naked eye within 0.6 meters, and clearly visible to the naked eye beyond 0.6 meters 4 It is completely invisible to the naked eye within 0.5 meters, and clearly visible to the naked eye beyond 0.5 meters 5 It is completely invisible to the naked eye within 0.4 meters, and clearly visible to the naked eye beyond 0.4 meters 6 It is completely invisible to the naked eye within 0.2 meters, and clearly visible to the naked eye beyond 0.2 meters
  • Hindered phenol type number 1010 Manufacturer: Shandong Sanfeng;
  • Phosphite type number 168 Manufacturer: Shandong Sanfeng;
  • Zinc stearate Model BS-2818 Manufacturer: Huamingtai Chemical;
  • polypropylene composite material for automobile instrument panel of the present invention is prepared by the following method:
  • the above mixed particles are added into a twin-screw extruder for melt extrusion, granulation, drying, cooling and packaging.
  • the temperature of the twin-screw extruder is 170°C, 200°C, 200°C, 210°C, 210°C, 205°C, 205°C, 200°C, and 200°C from the feeding section to the head.
  • the extrusion adopts double vacuum process and the vacuum degree is required to be ⁇ -0.08MPa.
  • polyethylene is ordinary injection-molding grade polyethylene HMA025.
  • Example 1 Except not containing scratch-resistant agent, other is the same as Example 1.
  • polypropylene composite material for automobile instrument panel of the present invention is prepared by the following method:
  • the above mixed particles are added into a twin-screw extruder for melt extrusion, granulation, drying, cooling and packaging.
  • the temperature of the twin-screw extruder is 170°C, 200°C, 200°C, 210°C, 210°C, 205°C, 205°C, 200°C, and 200°C from the feeding section to the head.
  • the extrusion adopts double vacuum process and the vacuum degree is required to be ⁇ -0.08MPa.
  • polypropylene composite material for automobile instrument panel of the present invention is prepared by the following method:
  • the above mixed particles are added into a twin-screw extruder for melt extrusion, granulation, drying, cooling and packaging.
  • the temperature of the twin-screw extruder is 170°C, 200°C, 200°C, 210°C, 210°C, 205°C, 205°C, 200°C, and 200°C from the feeding section to the head.
  • the extrusion adopts double vacuum process and the vacuum degree is required to be ⁇ -0.08MPa.
  • polypropylene composite material for automobile instrument panel of the present invention is prepared by the following method:
  • the above mixed particles are added into a twin-screw extruder for melt extrusion, granulation, drying, cooling and packaging.
  • the temperature of the twin-screw extruder is 170°C, 200°C, 200°C, 210°C, 210°C, 205°C, 205°C, 200°C, and 200°C from the feeding section to the head.
  • the extrusion adopts double vacuum process and the vacuum degree is required to be ⁇ -0.08MPa.
  • Table 2 shows the selection of ingredients and contents in specific examples 1 to 6 and comparative examples 1 to 2, and the performance data is shown in table 3:
  • the polypropylene composite materials for automobile instrument panels in Examples 1 to 6 of the present application all have good mechanical properties, tiger skin pattern, scratch resistance, gloss, low temperature damage performance and the like.
  • Example 1 and Comparative Examples 1-2 that the polypropylene A in Comparative Example 1 is replaced by ordinary polypropylene, and the polypropylene B in Comparative Example 2 is replaced by ordinary polypropylene, and the mechanical properties in Comparative Examples 1-2 are , tiger skin pattern, gloss, low temperature damage performance, etc.
  • Example 2 is an ordinary injection-molding grade polyethylene HMA025, and its tiger skin pattern and gloss are not as good as those in Example 1;
  • the scratch-resistant agent, its scratch-resistant performance is significantly worse than that of Example 1, and other mechanical properties, such as mechanical properties, also have a certain degree of decline.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

一种汽车仪表板聚丙烯复合材料，包括如下重量份的成分：聚丙烯A 20～62份、聚丙烯B 10～20份、填料10～25份、增韧剂10～20份、聚乙烯8～15份、润滑剂0.1～0.3份、光稳剂0.1～0.3份和抗氧剂0.2～0.6份；所述聚丙烯A为乙烯、丙烯合成的二元嵌段共聚聚丙烯，所述聚丙烯A的分散性指数PDI为5～10；所述聚丙烯B为1-丁烯、乙烯、丙烯合成的三元无规共聚聚丙烯。同时，还公开一种所述汽车仪表板聚丙烯复合材料的制备方法。通过使用聚丙烯A和聚丙烯B复配作为改性PP的基料，可同时满足良外观和低温爆破性能。

Description

一种汽车仪表板聚丙烯复合材料及其制备方法 技术领域
本发明涉及高分子材料改性领域，尤其涉及一种良外观低温爆破汽车仪表板聚丙烯复合材料及其制备方法。
背景技术
目前改性聚丙烯行业，仪表板材料的配方体系大部分是由滑石粉、普通乙烯-丙烯嵌段共聚聚丙烯(分散性指数PDI在2～5)、抗氧剂、润滑剂、光稳剂等组成，其中高密度聚乙烯HDPE也有用于聚丙烯增韧改性的，但是使用的是注塑级或拉丝级HDPE(MFR一般在1～8g/10min)，未见报道有用薄膜级HDPE(MFR一般在0.04～0.08g/10min)来改性聚丙烯。
三元无规共聚聚丙烯是1-丁烯、乙烯、丙烯为共聚单体采用Z-N催化剂生产而得。由于乙烯、1-丁烯的加入在一定程度上破坏了聚丙烯分子链的规整性，从而降低了聚丙烯的熔融温度(普通二元嵌段共聚Tm＝165～170℃，三元无规共聚聚丙烯Tm＝130～135℃)，较二元共聚聚丙烯有更好的低温热封性能、更宽的热封窗口、更优异的透明性、以及抗黏连性，因此适合做高档膜料，广泛应用于食品包装的蒸煮袋、复合膜、香烟包装膜、热收缩膜、金属复合膜等的加工和制造领域，但是并未见报道将其用于汽车改性聚丙烯配方体系中。
发明内容
基于此，本发明的目的在于克服上述现有技术的不足之处而提供一种良外观低温爆破汽车仪表板聚丙烯复合材料。
为实现上述目的，本发明所采取的技术方案为：一种汽车仪表板聚丙烯复合材料，包括如下重量份的成分：聚丙烯A 20～62份、聚丙烯B 10～20份、填料10～25份、增韧剂10～20份、聚乙烯8～15份、润滑剂0.1～0.3份、光稳剂0.1～0.3份和抗氧剂0.2～0.6份；所述聚丙烯A为乙烯、丙烯合成的二元嵌段共聚聚丙烯，所述聚丙烯A的分散性指数PDI为5～10；所述聚丙烯B为1-丁烯、乙烯、丙烯 合成的三元无规共聚聚丙烯；所述PDI采用凝胶渗透色谱法测定所得。
本发明通过使用聚丙烯A、聚丙烯B、聚乙烯，并结合填料等可制备出良外观低温爆破仪表板聚丙烯复合材料，可满足现阶段汽车行业推行的良外观可低温爆破的硬塑仪表板零部件要求。
PDI是聚合物分散性指数，用于描述聚合物分子量分布。高分子材料的高分子量通常不均一，本质上是混合物，用平均分子量来描述高分子的分子量大小，平均分子量可分为数均分子量、重均分子量和粘均分子量，其中重均分子量和数均分子量之比称为多分散性指数，数值大于1；PDI越大，分子量分布越宽；PDI越小，分子量分布越均匀；本申请PDI采用凝胶渗透色谱(GPC)方法测定。
优选地，所述聚乙烯为高密度聚乙烯，所述聚乙烯在190℃、2.16kg测试条件下的MFR为0.04～0.08g/10min。
优选地，所述的汽车仪表板聚丙烯复合材料，还包含0.5～2.5重量份的耐刮擦剂，所述耐刮擦剂为硅酮类耐刮擦剂或酰胺类耐刮擦剂。
优选地，所述填料为碱式硫酸镁晶须、滑石粉中的至少一种。
更优选地，所述碱式硫酸镁晶须的直径不大于3μm，所述碱式硫酸镁晶须的长度不小于25μm；所述滑石粉的D50不大于6μm。
优选地，所述增韧剂为乙烯-辛烯无规共聚物或乙烯-辛烯嵌段共聚物。
优选地，所述润滑剂为酰胺类润滑剂、硬脂酸盐类润滑剂中的至少一种；所述抗氧剂为受阻酚类抗氧剂、亚磷酸酯类抗氧剂中的至少一种；所述光稳剂为受阻胺类光稳剂。
同时，本发明还提供一种所述汽车仪表板聚丙烯复合材料的制备方法，所述方法为：
先将除填料之外的各成分加入到高速混合机中混合3～5分钟，高速混合机的转速为200～300转/分钟；然后将填料加入高速混合机中混合3～5分钟，高速 混合机的转速为200～300转/分钟，得到混合料；再将混合料加入双螺杆挤出机中进行熔融挤出、造粒、干燥、冷却、装包，得到汽车仪表板聚丙烯复合材料；其中，双螺杆挤出机的温度从喂料段到机头依次为170℃、200℃、200℃、210℃、210℃、205℃、205℃、205℃、200℃、200℃。
优选地，采用双真空吸附脱挥分，真空度不大于-0.08MPa。
相对于现有技术，本发明的有益效果为：
1、本发明通过使用聚丙烯A和聚丙烯B复配作为改性PP的基料，可同时满足良外观和低温爆破性能；
2、本发明通过使用特殊聚乙烯改性PP，可降低材料光泽度和低温韧性，对复合材料的外观和低温爆破有很大的益处；
3、本发明生产工艺简单、适合大批量生产。
具体实施方式
为更好的说明本发明的目的、技术方案和优点，下面将结合具体实施例对本发明作进一步说明。以下实施例只是本发明的典型例，本发明的保护范围并不局限于此。以下实施例和对比例中，PDI采用凝胶渗透色谱(GPC)方法测定所得；密度按照ISO 1183-1标准进行测试；拉伸性能按照ISO 527-2标准进行测试、拉伸速度为50mm/min；弯曲性能按照ISO 178标准进行测试、弯曲速度为2mm/min；悬臂梁缺口冲击按照ISO 180标准进行测试；低温-35℃多轴冲击参考ISO 6603-2标准测试(2mm厚度方板评价、4.4m/s冲击速度、一般认为破坏形式为YD&YS可以满足爆破要求)；耐刮擦按照上海大众的PV3952《塑料内饰耐刮擦性能评价》标准，10N载荷评价刮擦后的△L(用KINGFA内部的STUCCO皮纹板评价，一般认为△L≤1.5客户可接受)；光泽度参考ISO 2813标准进行测试(测量角度60℃、STUCCO皮纹板评价，一般认为≤3GU客户可接受)；虎皮纹外观按照KINGFA内部评价标准进行评价(按照流长1米来算，越短出现虎皮纹表示外观越差，即等级越低虎皮纹外观越好，一般认为≤3级客户可接受)，具体评价等级如下表1：
表1 虎皮纹等级
等级 外观描述
1 1米之内肉眼完全看不出
2 0.8米之内肉眼完全看不出，0.8米之外肉眼明显可见
3 0.6米之内肉眼完全看不出，0.6米之外肉眼明显可见
4 0.5米之内肉眼完全看不出，0.5米之外肉眼明显可见
5 0.4米之内肉眼完全看不出，0.4米之外肉眼明显可见
6 0.2米之内肉眼完全看不出，0.2米之外肉眼明显可见
实施例和对比例中用到的主要代表材料如下：
聚丙烯A
型号：BI997(PDI＝9) 厂家：韩华道达尔；
型号：BI871(PDI＝7.5) 厂家：韩华道达尔；
型号：7905E1(PDI＝10) 厂家：埃克森美孚；
型号：EP5091(PDI＝8) 厂家：利安德巴塞尔；
型号：X1956A(PDI＝5) 厂家：利安德巴塞尔；
聚丙烯B：
型号：C5608(Tm＝130℃) 厂家：中石化；
型号：ADSYL 6089(Tm＝133℃) 厂家：利安德巴塞尔；
普通共聚聚丙烯：
型号：EP648U(PDI＝3.8) 厂家：中海壳牌；
型号：K7100(PDI＝4.5) 厂家：中石化；
聚乙烯：
型号：7000F(MFR＝0.04g/10min) 厂家：中石化；
型号：HTA001HD5(MFR＝0.06g/10min) 厂家：埃克森美孚；型号：HD5301AA(MFR＝0.08g/10min) 厂家：上海赛科；
普通注塑级聚乙烯：
型号：HMA025(MFR＝8g/10min) 厂家：埃克森美孚；
滑石粉：
型号：TYT-777A(D50＝6μm) 厂家：辽宁添源；
型号：HTPultra5L(D50＝0.65μm) 厂家：依米法比；
碱式硫酸镁晶须：
型号：WS1-S2(直径不大于3μm，长度不小于25μm)，厂家：营口威斯克化学；
乙烯-辛烯无规共聚物(POE)：
型号：Engage8842 厂家：陶氏化学；
乙烯-辛烯嵌段共聚物(OBC)：
型号：Infuse9107 厂家：陶氏化学；
耐刮擦剂：
酰胺类型号：芥酸酰胺 厂家：长沙恒昌化工；
硅酮类型号：MB50-001 厂家：美国道康宁；
抗氧剂：
受阻酚类型号：1010 厂家：山东三丰；
亚磷酸酯类型号：168 厂家：山东三丰；
光稳定剂：
型号：UV-3808PP5 厂家：比利时索尔维；
润滑剂：
酰胺类型号：TR451 厂家：美国STRUKTOL；
硬脂酸钙型号：BS-3818 厂家：华明泰化工；
硬脂酸锌型号：BS-2818 厂家：华明泰化工；
实施例1
本发明所述汽车仪表板聚丙烯复合材料的一种实施例，本实施例所述汽车 仪表板聚丙烯复合材料通过以下方法制备所得：
首先称取20份特殊聚丙烯A-BI997、20份特殊聚丙烯B-C5608、20份增韧剂Engage 8842、15份特殊聚乙烯HD5301AA、0.3份光稳剂、0.3份润滑剂TR451、0.6份抗氧剂(1010:168＝1:2)、2.5份耐刮擦剂MB50-001于高速混合机中混合3分钟，其中高速混合机的转速为200转/分钟；接着称取25份填料滑石粉TYT-777A加入高速混合机中混合5分钟，其中高速混合机的转速为300转/分钟。将上述混合好的粒子加入双螺杆挤出机中进行熔融挤出、造粒、干燥、冷却、装包。双螺杆挤出机的温度从喂料段到机头依次为170℃、200℃、200℃、210℃、210℃、205℃、205℃、205℃、200℃、200℃。挤出采用双真空工艺且真空度要求≤-0.08MPa。
对比例1
除将聚丙烯A换成普通共聚聚丙烯K7100外，其他均与实施例1相同。
对比例2
除将聚丙烯B换成普通共聚聚丙烯EP648U外，其他均与实施例1相同。
实施例2
除聚乙烯的选择不同外，其他均与实施例1相同，本实施例中聚乙烯为普通注塑级聚乙烯HMA025。
实施例3
除不含有耐刮擦剂外，其他均与实施例1相同。
实施例4
本发明所述汽车仪表板聚丙烯复合材料的一种实施例，本实施例所述汽车仪表板聚丙烯复合材料通过以下方法制备所得：
首先称取62份特殊聚丙烯A-EP5091、10份特殊聚丙烯ADSYL 6089、10份增韧剂Infuse 9107、8份特殊聚乙烯7000F、0.1份光稳剂、0.1份润滑剂 BS-2818、0.2份抗氧剂(1010:168＝1:1)、0.5份耐刮擦剂芥酸酰胺于高速混合机中混合5分钟，其中高速混合机的转速为300转/分钟；接着称取10份填料滑石粉HTPultra5L加入高速混合机中混合3分钟，其中高速混合机的转速为300转/分钟。将上述混合好的粒子加入双螺杆挤出机中进行熔融挤出、造粒、干燥、冷却、装包。双螺杆挤出机的温度从喂料段到机头依次为170℃、200℃、200℃、210℃、210℃、205℃、205℃、205℃、200℃、200℃。挤出采用双真空工艺且真空度要求≤-0.08MPa。
实施例5
本发明所述汽车仪表板聚丙烯复合材料的一种实施例，本实施例所述汽车仪表板聚丙烯复合材料通过以下方法制备所得：
首先称取25份特殊聚丙烯A-7905E1、5份特殊聚丙烯A-X1956A、13份特殊聚丙烯ADSYL 6089、14份增韧剂Infuse 9107、10份特殊聚乙烯HTA001HD5、0.16份光稳剂、0.12份润滑剂BS-3818、0.24份抗氧剂(1010:168＝1:1)、0.5份耐刮擦剂芥酸酰胺于高速混合机中混合3.5分钟，其中高速混合机的转速为222转/分钟；接着称取15份填料晶须WS1-S2加入高速混合机中混合3.2分钟，其中高速混合机的转速为293转/分钟。将上述混合好的粒子加入双螺杆挤出机中进行熔融挤出、造粒、干燥、冷却、装包。双螺杆挤出机的温度从喂料段到机头依次为170℃、200℃、200℃、210℃、210℃、205℃、205℃、205℃、200℃、200℃。挤出采用双真空工艺且真空度要求≤-0.08MPa。
实施例6
本发明所述汽车仪表板聚丙烯复合材料的一种实施例，本实施例所述汽车仪表板聚丙烯复合材料通过以下方法制备所得：
首先称取25份特殊聚丙烯A-BI871、20份特殊聚丙烯A-EP5091、15份特殊聚丙烯ADSYL 6089、10份增韧剂Infuse 9107、6份增韧剂Engage 8842、12份特殊聚乙烯HTA001HD5、0.19份光稳剂、0.12份润滑剂BS-3818、0.13份润滑剂TR451、0.48份抗氧剂(1010:168＝1:3)、1.5份耐刮擦剂MB50-001于高速混合机中混合3.7分钟，其中高速混合机的转速为256转/分钟；接着称取8份 填料晶须WS1-S2、12份填料滑石粉TYT-777A加入高速混合机中混合4.5分钟，其中高速混合机的转速为278转/分钟。将上述混合好的粒子加入双螺杆挤出机中进行熔融挤出、造粒、干燥、冷却、装包。双螺杆挤出机的温度从喂料段到机头依次为170℃、200℃、200℃、210℃、210℃、205℃、205℃、205℃、200℃、200℃。挤出采用双真空工艺且真空度要求≤-0.08MPa。
具体实施例1～6及对比例1～2中的成分及含量选择如表2所示，性能数据如表3所示：
表2 实施例1～6和对比例1～2中的成分及含量
Figure PCTCN2020136306-appb-000001
Figure PCTCN2020136306-appb-000002
表3 实施例1～6和对比例1～2性能数据
Figure PCTCN2020136306-appb-000003
Figure PCTCN2020136306-appb-000004
从表3可以看出，本申请实施例1～6中的汽车仪表板聚丙烯复合材料均具有较好的力学性能、虎皮纹、耐刮擦性能、光泽度、低温破坏性能等。
将实施例1与对比例1～2可知，对比例1中的聚丙烯A换成普通聚聚丙烯，对比例2中聚丙烯B换成普通聚聚丙烯，对比例1～2中的力学性能、虎皮纹、光泽度、低温破坏性能等均不如实施例1，尤其是对比例1中外观虎皮纹严重不达标，对比例2中低温破坏性能严重不达标；将实施例1与实施例2对比可知，实施例2中的聚乙烯为普通注塑级聚乙烯HMA025，其虎皮纹等级及光泽度都不如实施例1；将实施例1与实施例3对比可知，实施例3中不含有耐刮擦剂，其耐刮擦性能明显差于实施例1，其他如力学性能也有一定程度的下降。
最后所应当说明的是，以上实施例仅用以说明本发明的技术方案而非对本发明保护范围的限制，尽管参照较佳实施例对本发明作了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的实质和范围。

Claims (9)

  1. 一种汽车仪表板聚丙烯复合材料，其特征在于，包括如下重量份的成分：聚丙烯A 20～62份、聚丙烯B 10～20份、填料10～25份、增韧剂10～20份、聚乙烯8～15份、润滑剂0.1～0.3份、光稳剂0.1～0.3份和抗氧剂0.2～0.6份；所述聚丙烯A为乙烯、丙烯合成的二元嵌段共聚聚丙烯，所述聚丙烯A的分散性指数PDI为5～10；所述聚丙烯B为1-丁烯、乙烯、丙烯合成的三元无规共聚聚丙烯；所述PDI采用凝胶渗透色谱法测定所得。
  2. 如权利要求1所述的汽车仪表板聚丙烯复合材料，其特征在于，所述聚乙烯为高密度聚乙烯，所述聚乙烯在190℃、2.16kg测试条件下的MFR为0.04～0.08g/10min。
  3. 如权利要求1所述的汽车仪表板聚丙烯复合材料，其特征在于，还包含0.5～2.5重量份的耐刮擦剂，所述耐刮擦剂为硅酮类耐刮擦剂或酰胺类耐刮擦剂。
  4. 如权利要求1所述的汽车仪表板聚丙烯复合材料，其特征在于，所述填料为碱式硫酸镁晶须、滑石粉中的至少一种。
  5. 如权利要求4所述的汽车仪表板聚丙烯复合材料，其特征在于，所述碱式硫酸镁晶须的直径不大于3μm，所述碱式硫酸镁晶须的长度不小于25μm；所述滑石粉的粒径D50不大于6μm。
  6. 如权利要求1所述的汽车仪表板聚丙烯复合材料，其特征在于，所述增韧剂为乙烯-辛烯无规共聚物或乙烯-辛烯嵌段共聚物。
  7. 如权利要求1所述的汽车仪表板聚丙烯复合材料，其特征在于，所述润滑剂为酰胺类润滑剂、硬脂酸盐类润滑剂中的至少一种；所述抗氧剂为受阻酚类抗氧剂、亚磷酸酯类抗氧剂中的至少一种；所述光稳剂为受阻胺类光稳剂。
  8. 一种如权利要求1～7任一项所述汽车仪表板聚丙烯复合材料的制备方法，其特征在于，所述方法为：
    先将除填料之外的各成分加入到高速混合机中混合3～5分钟，高速混合机的转速为200～300转/分钟；然后将填料加入高速混合机中混合3～5分钟，高速 混合机的转速为200～300转/分钟，得到混合料；再将混合料加入双螺杆挤出机中进行熔融挤出、造粒、干燥、冷却、装包，得到所述汽车仪表板聚丙烯复合材料；其中，双螺杆挤出机的温度从喂料段到机头依次为170℃、200℃、200℃、210℃、210℃、205℃、205℃、205℃、200℃、200℃。
  9. 如权利要求8所述汽车仪表板聚丙烯复合材料的制备方法，其特征在于，采用双真空吸附脱挥分，真空度不大于-0.08MPa。
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CN105061901A (zh) * 2015-08-28 2015-11-18 合肥会通新材料有限公司 一种无缝仪表板用聚丙烯复合材料及其制备方法
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CN106832598A (zh) * 2016-12-27 2017-06-13 天津金发新材料有限公司 一种抗应力发白低voc低线性膨胀系数聚丙烯材料
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CN114874528A (zh) * 2022-06-07 2022-08-09 苏州旭光聚合物有限公司 一种汽车头枕骨架用改性hdpe复合材料及其制备方法
CN114874528B (zh) * 2022-06-07 2023-07-28 苏州旭光聚合物有限公司 一种汽车头枕骨架用改性hdpe复合材料及其制备方法
CN115710397A (zh) * 2022-10-10 2023-02-24 江苏金发科技新材料有限公司 一种恒温聚丙烯材料及其制备方法和应用
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CN118256038A (zh) * 2022-12-28 2024-06-28 合肥杰事杰新材料股份有限公司 一种改性聚丙烯材料及其制备方法
CN116023741A (zh) * 2022-12-30 2023-04-28 青岛国恩科技股份有限公司 一种耐磨耐刮擦低线膨胀系数聚丙烯材料及其制备方法
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