WO2020083268A1 - 一种聚丙烯组合物及其制备方法 - Google Patents

一种聚丙烯组合物及其制备方法 Download PDF

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WO2020083268A1
WO2020083268A1 PCT/CN2019/112458 CN2019112458W WO2020083268A1 WO 2020083268 A1 WO2020083268 A1 WO 2020083268A1 CN 2019112458 W CN2019112458 W CN 2019112458W WO 2020083268 A1 WO2020083268 A1 WO 2020083268A1
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mica
polypropylene composition
nano
polypropylene
parts
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PCT/CN2019/112458
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English (en)
French (fr)
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雷亮
吴亦建
苏娟霞
彭莉
卢朝亮
孙刚
杨波
罗忠富
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金发科技股份有限公司
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Publication of WO2020083268A1 publication Critical patent/WO2020083268A1/zh

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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
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • 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
    • C08L23/12—Polypropene
    • 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
    • C08K2201/011—Nanostructured additives
    • 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
    • C08K2201/016—Additives defined by their aspect ratio

Definitions

  • the invention relates to a polypropylene composition and a preparation method thereof, which belong to the technical field of polymer materials.
  • Automobile noise has become an important source of noise pollution, which not only affects the comfort of vehicle occupants, but also affects the health of pedestrians. Therefore, it is necessary to develop materials with better sound insulation effect and apply them to automobiles. Automotive lightweighting is an important direction for the development of the automotive industry, requiring the use of lightweight materials. Polymer materials have the characteristics of light weight and easy processing, and are widely used in automobiles. However, polymer materials usually have poor sound insulation and it is difficult to meet the requirements of sound insulation performance.
  • CN102002190B improves the sound insulation of the material by adding 10% to 60% iron powder to polypropylene.
  • CN106566070A makes the modified polypropylene material have better sound insulation performance by adding chlorinated polyethylene and iron powder. In this method, the amount of inorganic filler added is high, which affects the mechanical properties of the material and is not conducive to weight loss.
  • CN104725718A and CN107118490A prepare foamed polypropylene by a chemical foaming method, and utilize the sound insulation effect of cells to have a wide range of applications in weight reduction and sound insulation of automobile parts. These two methods require special injection molding equipment and processes, and the mechanical properties of the foamed material are low. Therefore, there is still a need in the art to develop a simple and lightweight sound-insulating polypropylene composite material for automotive interior and exterior trim parts.
  • the purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a light-weight sound-insulating polypropylene composition and a preparation method thereof.
  • a polypropylene composition comprising the following parts by weight of components: 63-99 parts of polypropylene, 0-30 parts of toughening agent, and 1-5 of nano mica
  • the diameter-thickness ratio of more than 90% of the nano mica is (30-100): 1.
  • the test method of the diameter-thickness ratio of the above-mentioned nano-mica is to observe the morphology of the nano-mica through a scanning electron microscope, measure the diameter and thickness of the nano-mica sheet, and calculate the diameter-thickness ratio by using the ratio of the diameter to the thickness.
  • nano mica is mica with a thickness less than 100 nm
  • the present invention breaks the convention and uses nano mica (nano mica is mica with a thickness less than 100 nm) as the reinforcing filler.
  • the study of the present invention was surprised to find that using nano-mica as a reinforcing filler, the nano-mica is uniformly dispersed in the polypropylene matrix, and a smaller amount of nano-mica can achieve a higher dispersion concentration.
  • the nano-mica used in the present invention is a two-dimensional sheet material with a high aspect ratio. Nano-mica with a high aspect ratio can increase the flexural modulus of polypropylene materials and effectively reflect sound waves. The amplitude improves the mechanical properties and sound insulation effect of the material.
  • the density of the polypropylene composition of the present invention is low.
  • the polypropylene composition of the present invention has the characteristics of low density, high rigidity and high sound insulation effect.
  • the nano mica is 2 to 4 parts by weight.
  • the nano-mica is 3 parts by weight.
  • the amount of nano-mica affects the sound insulation effect and density of the polypropylene composition of the present invention. If the amount of nano-mica is too low, the sound insulation effect of the polypropylene composition is poor; if the amount of the nano-mica is too high, the density of the polypropylene composition is too large, which is not conducive to product weight loss. Taking the sound insulation effect and density of the polypropylene composition into consideration, it is preferable that the nano mica is 2 to 4 parts by weight, and more preferably the nano mica is 3 parts by weight.
  • the diameter-to-thickness ratio of 90% or more of the nano-mica is (60-90): 1.
  • the diameter-to-thickness ratio of 90% or more of the nano-mica is 80: 1. The diameter-thickness ratio of nano-mica affects the sound insulation effect and mechanical properties of the polypropylene composition.
  • the diameter ratio of nano-mica is (60-90): 1; more preferably the diameter ratio of nano-mica is 80: 1.
  • polypropylene composition of the present invention at least one of the following (a) and (b):
  • the polypropylene is a copolymer polypropylene or a homopolypropylene, the melt mass flow rate of the polypropylene is 1-100g / 10min, the melt mass flow rate of the polypropylene is 2.16 according to ASTM D1238 kg weight and measured at a temperature of 230 ° C;
  • the toughening agent is at least one of ethylene-propylene copolymer, ethylene-butene copolymer, and ethylene-octene copolymer, and the density of the toughening agent is 0.85 to 0.9 g / cm 3 ,
  • the melt mass flow rate of the melt is 0.3 to 30 g / 10 min; the melt mass flow rate of the toughener is measured according to ASTM D1238 using a weight of 2.16 kg and a temperature of 190 ° C.
  • the polypropylene composition further includes the following parts by weight of components: auxiliary agent 0.2 to 2 parts.
  • auxiliary agent 0.2 to 2 parts.
  • additives may be further added.
  • different additives have different effects on the properties of the polypropylene composition.
  • plasticizers can make the polypropylene composition more flexible, and antioxidants can improve the antioxidant capacity of the polypropylene composition.
  • a person skilled in the art can select a suitable auxiliary agent according to the specific properties of the polypropylene composition required in the actual process.
  • the auxiliary agent is at least one of an antioxidant and a light stabilizer.
  • the antioxidant is at least one of a hindered phenol antioxidant and a phosphite antioxidant; the light stabilizer is a hindered amine Light stabilizer. More preferably, the antioxidant is at least one of antioxidant 1010, antioxidant 1076, antioxidant 3114, antioxidant 168, antioxidant RCPEP 36; the light stabilizer is light stabilizer At least one of UV-3808PP5, light stabilizer LA-402XP, and light stabilizer LA-402AF.
  • the present invention also provides a method for preparing the above-mentioned polypropylene composition, which includes the following steps: mixing the components in the polypropylene composition uniformly and then adding it to a twin-screw extruder for melt kneading and extrusion Pellets to obtain a polypropylene composition.
  • the invention adopts a twin-screw extruder to prepare polypropylene composition. Under the action of twin-screw shearing, nano-mica is evenly dispersed in the polypropylene matrix, and a smaller amount of nano-mica can achieve a higher dispersion concentration.
  • the temperature of the melt-kneading is 170-220 ° C, and the rotation speed of the screw of the twin-screw extruder is 350-450 rpm.
  • the beneficial effects of the present invention are: the present invention adopts nano mica with high diameter to thickness ratio as sound insulation filler, fully disperses the nano mica in the polypropylene matrix, and utilizes the role of nano mica to reflect sound waves to enhance the polymerization Mechanical properties and sound insulation effect of propylene / nano-mica composite material. Moreover, due to the low content of nano-mica, the density of the polypropylene composition of the present invention is low.
  • the polypropylene composition of the present invention has the characteristics of low density (light weight), high rigidity and high sound insulation effect.
  • the polypropylene composition of the present invention can be used to prepare automotive interior and exterior trims to achieve the purposes of sound insulation and weight reduction.
  • melt flow rate (MFR) of polypropylene is measured according to ASTM D1238 using a weight of 2.16 kg and measured at a temperature of 230 ° C
  • melt flow rate (MFR) of toughener is used according to ASTM D1238 2.16kg weight and measured at a temperature of 190 ° C.
  • the thickness of ordinary mica used is not less than 100 nm, and the thickness of nano-mica is less than 100 nm.
  • the diameter-thickness ratio of nano-mica in the embodiments refers to the diameter-thickness ratio of 90% nano-mica in nano-mica.
  • the preparation method of the polypropylene composition described in Examples 1 to 5 is as follows: after mixing all the components in the polypropylene composition uniformly, it is added to a twin-screw extruder, followed by melt kneading and extrusion granulation to obtain polypropylene Composition; wherein, the temperature of melt-kneading is 170-220 ° C, and the rotation speed of the screw of the twin-screw extruder is 350-450 rpm.
  • the polypropylene composition of the present invention has the characteristics of light weight, high rigidity and high sound insulation effect.
  • the diameter-thickness ratio of nano mica affects the sound insulation effect and mechanical properties of the polypropylene composition.
  • polypropylene compositions of test groups 1 to 5 and control groups 1 to 3 were prepared.
  • this effect example also tested the properties of the test group 1 to 5 and the control group 1 to 3 polypropylene composition of the effect example according to the performance test methods of the polypropylene compositions of Examples 1 to 5 above.
  • Table 3 shows the composition and performance test results of the test group 1 to 5 and the control group 1 to 3 polypropylene compositions.
  • the polypropylene is copolymerized polypropylene or homopolymerized polypropylene, and the melt flow rate of the polypropylene is 1-100 g / 10min;
  • the toughening agent is ethylene-propylene copolymer, ethylene-butyl At least one of an olefin copolymer and an ethylene-octene copolymer, the density of the toughening agent is 0.85 to 0.9 g / cm 3 , and the melt mass flow rate is 0.3 to 30 g / 10 min.
  • the amount of nano mica affects the sound insulation effect and density of the polypropylene composition.
  • this effect example prepared polypropylene compositions of test groups 1 to 5 and control groups 1 to 2.
  • this effect example also tested the performance of the polypropylene compositions of the test groups 1 to 5 and the control group 1 to 2 of the effect examples according to the performance test methods of the polypropylene compositions of the above examples 1 to 5.
  • Table 4 shows the composition and performance test results of the polypropylene compositions of the test groups 1 to 5 and the control groups 1 to 2.
  • the polypropylene is copolymer polypropylene or homopolypropylene, and the melt flow rate of the polypropylene is 1-100 g / 10min;
  • the toughening agent is ethylene-propylene copolymer, ethylene-butyl At least one of an olefin copolymer and an ethylene-octene copolymer, the density of the toughening agent is 0.85 to 0.9 g / cm 3 , and the melt mass flow rate is 0.3 to 30 g / 10 min.

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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

本发明涉及一种聚丙烯组合物及其制备方法，属于高分子材料技术领域。本发明的聚丙烯组合物包括下述重量份的组分：聚丙烯63～99份，增韧剂0～30份，纳米云母1～5份；所述纳米云母中，90％以上纳米云母的径厚比为(30～100)：1。本发明采用高径厚比的纳米云母为增强填料，高径厚比的纳米云母可提高聚丙烯材料的弯曲模量、有效地反射声波，从而在低纳米云母含量下，能大幅度提高材料的力学性能和隔声效果。并且，由于纳米云母的含量较低，本发明聚丙烯组合物的密度较低；本发明的聚丙烯组合物具有质轻、高刚性和高隔声效果的特性。

Description

一种聚丙烯组合物及其制备方法 技术领域
本发明涉及一种聚丙烯组合物及其制备方法，属于高分子材料技术领域。
背景技术
汽车噪声已成为噪声污染的重要来源，不仅影响车辆驾乘人员的舒适性，也影响行人的身体健康。因此需开发隔声效果较好的材料应用在汽车上。汽车轻量化是汽车工业发展的重要方向，要求使用轻质的材料。高分子材料具有质轻和易加工的特点，在汽车上得到了广泛的应用。但高分子材料通常隔声效果较差，难以满足隔音性能要求。
为了提高高分子材料的隔声性能，人们进行了很多研究。CN 102002190B通过在聚丙烯中添加10％～60％的铁粉来提高材料的隔声性。CN106566070A通过添加氯化聚乙烯和铁粉，使改性聚丙烯材料具有较好的隔声性能。该方法的无机填料添加量高，影响材料的力学性能，且不利于减重。CN 104725718A和CN107118490A通过化学发泡方法制备发泡聚丙烯，利用泡孔的隔声效果，在汽车零部件的减重和隔声方面具有广泛的应用。这两种方法需要特殊的注塑设备和工艺，且发泡材料的力学性能较低。因此，本领域尚需开发一种制备简单且轻质隔声聚丙烯复合材料，用于汽车内外饰零部件。
发明内容
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轻质隔声聚丙烯组合物及其制备方法。
为实现上述目的，本发明采取的技术方案为：一种聚丙烯组合物，其包括下述重量份的组分：聚丙烯63～99份，增韧剂0～30份，纳米云母1～5份；所述纳米云母中，90％以上纳米云母的径厚比为(30～100)：1。
上述纳米云母的径厚比的测试方法为：通过扫描电子显微镜观察纳米云母 的形貌，量出纳米云母片的直径和厚度，并采用直径与厚度的比值计算出径厚比。
现有技术中，通常以普通云母(普通云母的厚度不小于100nm)作为增强填料，本发明打破常规，以纳米云母(纳米云母是厚度小于100nm的云母)作为增强填料。本发明研究惊讶地发现，采用纳米云母为增强填料，纳米云母均匀分散在聚丙烯基体中，较少添加量的纳米云母即可实现较高的分散浓度。本发明采用的纳米云母是高径厚比的二维片状材料，高径厚比的纳米云母可提高聚丙烯材料的弯曲模量、有效地反射声波，从而在低纳米云母含量下，能大幅度提高材料的力学性能和隔声效果。并且，由于纳米云母的含量较低，本发明聚丙烯组合物的密度较低。
本发明的聚丙烯组合物具有低密度、高刚性和高隔声效果的特性。
作为本发明所述聚丙烯组合物的优选实施方式，所述纳米云母为2～4重量份。作为本发明所述聚丙烯组合物的更优选实施方式，所述纳米云母为3重量份。纳米云母的用量影响本发明聚丙烯组合物的隔声效果和密度。若纳米云母的用量过低，则聚丙烯组合物的隔声效果较差；若纳米云母的用量过高，则导致聚丙烯组合物的密度偏大，不利于产品减重。综合考虑聚丙烯组合物的隔声效果和密度，优选纳米云母为2～4重量份，更优选纳米云母为3重量份。
作为本发明所述聚丙烯组合物的优选实施方式，所述纳米云母中，90％以上纳米云母的径厚比为(60～90)：1。作为本发明所述聚丙烯组合物的更优选实施方式，所述纳米云母中，90％以上纳米云母的径厚比为80：1。纳米云母的径厚比影响聚丙烯组合物的隔声效果和力学性能，当纳米云母的径厚比较小时，聚丙烯组合物的隔声效果较差；高径厚比的纳米云母可提高聚丙烯组合物的弯曲模量和声波反射程度，然而，当纳米云母的径厚比较大时，纳米云母易被剪断而产生大小不一的脆片，使得聚丙烯组合物的隔声和力学性能降低。综合考虑聚丙烯组合物的隔声和力学性能，优选纳米云母的径厚比为(60～90)：1；更优选纳米云母的径厚比为80：1。
作为本发明所述聚丙烯组合物的优选实施方式，如下(a)、(b)中的至少 一项：
(a)所述聚丙烯为共聚聚丙烯或均聚聚丙烯，所述聚丙烯的熔体质量流动速率为1～100g/10min，所述聚丙烯的熔体质量流动速率是根据ASTM D1238使用2.16kg重量并在230℃的温度测量；
(b)所述增韧剂为乙烯-丙烯共聚物、乙烯-丁烯共聚物、乙烯-辛烯共聚物中的至少一种，所述增韧剂的密度为0.85～0.9g/cm 3，熔体质量流动速率为0.3～30g/10min；所述增韧剂的熔体质量流动速率是根据ASTM D1238使用2.16kg重量并在190℃的温度测量。
作为本发明所述聚丙烯组合物的优选实施方式，所述聚丙烯组合物还包括下述重量份的组分：助剂0.2～2份。为了使本发明聚丙烯组合物的综合性能更好，可以进一步加入助剂。当然，不同助剂对聚丙烯组合物性能的影响不同，例如，增塑剂可使聚丙烯组合物的柔软性更好，抗氧剂可以提高聚丙烯组合物的抗氧化能力。本领域的技术人员可根据实际过程中所需的聚丙烯组合物的具体性能选择适宜的助剂。
作为本发明所述聚丙烯组合物的优选实施方式，所述助剂为抗氧剂、光稳定剂中的至少一种。作为本发明所述聚丙烯组合物的更优选实施方式，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；所述光稳定剂为受阻胺类光稳定剂。更优选地，所述抗氧剂为抗氧剂1010、抗氧剂1076、抗氧剂3114、抗氧剂168、抗氧剂RC PEP 36中的至少一种；所述光稳定剂为光稳定剂UV-3808PP5、光稳定剂LA-402XP、光稳定剂LA-402AF中的至少一种。
另外，本发明还提供了上述聚丙烯组合物的制备方法，其包括以下步骤：将聚丙烯组合物中的各组分混合均匀后加入双螺杆挤出机中，进行熔融混炼和挤出造粒，得到聚丙烯组合物。
本发明采用双螺杆挤出机制备聚丙烯组合物，在双螺杆剪切作用下，纳米云母均匀分散在聚丙烯基体中，较少纳米云母添加量即可实现较高的分散浓度。
作为本发明所述聚丙烯组合物的制备方法的优选实施方式，所述熔融混炼的温度为170～220℃，所述双螺杆挤出机的螺杆的转速为350～450转/分。
与现有技术相比，本发明的有益效果为：本发明采用高径厚比的纳米云母为隔声填料，将纳米云母充分分散在聚丙烯基体中，利用纳米云母反射声波的作用，增强聚丙烯/纳米云母复合材料的力学性能和隔声效果。并且，由于纳米云母的含量较低，本发明聚丙烯组合物的密度较低。
本发明的聚丙烯组合物具有低密度(质轻)、高刚性和高隔声效果的特性。本发明的聚丙烯组合物可用于制备汽车内外饰件，实现隔声及减重的目的。
具体实施方式
为更好地说明本发明的目的、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。
下述实施例中，聚丙烯的熔体质量流动速率(MFR)是根据ASTM D1238使用2.16kg重量并在230℃的温度测量，增韧剂的熔体质量流动速率(MFR)是根据ASTM D1238使用2.16kg重量并在190℃的温度测量。
下述实施例中，所采用的普通云母的厚度不小于100nm，纳米云母的厚度小于100nm。实施例中纳米云母的径厚比指的是纳米云母中，90％纳米云母的径厚比。
实施例1～5
实施例1～5所述聚丙烯组合物的组成组分如表1所示。
实施例1～5所述聚丙烯组合物的制备方法为：将聚丙烯组合物中的各组分混合均匀后加入双螺杆挤出机中，进行熔融混炼和挤出造粒，得到聚丙烯组合物；其中，熔融混炼的温度为170～220℃，双螺杆挤出机的螺杆的转速为350～450转/分。
制得实施例1～5所述聚丙烯组合物后，将其分别注塑样板，用于测试密度、弯曲模量和隔声量。
性能测试方法如下：
(1)密度：按照ISO1183测试；
(2)弯曲模量：按照ISO178测试；
(3)隔声性能：按照ISO R140-170《建筑及建筑构件的隔声测量标准》测试。选择A计权网络，声压级为80dB的粉红背景噪声源。其中静音箱体积为1000mm×1000mm×1000mm，测试样尺寸为250mm×250mm。声音取样频率为“48000”；抽取速率选择位取“1”，快速傅立叶变换样本数取“2048”，数据计测采用常用的1/3倍频率。
实施例1～5所述聚丙烯组合物的性能测试结果如表2所示。
表1
Figure PCTCN2019112458-appb-000001
表2
Figure PCTCN2019112458-appb-000002
Figure PCTCN2019112458-appb-000003
由表2可见，本发明的聚丙烯组合物具有质轻、高刚性和高隔声效果的特性。
效果例1
本发明聚丙烯组合物中，纳米云母的径厚比影响聚丙烯组合物的隔声效果和力学性能。为了考察纳米云母的径厚比对聚丙烯组合物性能的影响，本效果例制备了试验组1～5以及对照组1～3的聚丙烯组合物。同时，本效果例还按照上述实施例1～5聚丙烯组合物的性能测试方法测试了本效果例试验组1～5以及对照组1～3聚丙烯组合物的性能。试验组1～5以及对照组1～3聚丙烯组合物的组成以及性能测试结果如表3所示。
表3
Figure PCTCN2019112458-appb-000004
Figure PCTCN2019112458-appb-000005
表3中，所述聚丙烯为共聚聚丙烯或均聚聚丙烯，所述聚丙烯的熔体质量流动速率为1～100g/10min；所述增韧剂为乙烯-丙烯共聚物、乙烯-丁烯共聚物、乙烯-辛烯共聚物中的至少一种，所述增韧剂的密度为0.85～0.9g/cm 3，熔体质量流动速率为0.3～30g/10min。
由表3可见，与普通云母比较，采用高径厚比的纳米云母作为增强填料得到的聚丙烯组合物的隔声效果和力学性能显著增强。并且，当纳米云母的径厚比为(60～90)：1时，得到的聚丙烯组合物的隔声效果和力学性能更好，尤其当纳米云母的径厚比为80：1时，得到的聚丙烯组合物的隔声效果和力学性能特别好。
效果例2
本发明聚丙烯组合物中，纳米云母的用量影响聚丙烯组合物的隔声效果和密度。为了考察纳米云母的用量对聚丙烯组合物性能的影响，本效果例制备了试验组1～5以及对照组1～2的聚丙烯组合物。同时，本效果例还按照上述实施例1～5聚丙烯组合物的性能测试方法测试了本效果例试验组1～5以及对照组1～2聚丙烯组合物的性能。试验组1～5以及对照组1～2聚丙烯组合物的组成以及性 能测试结果如表4所示。
表4
Figure PCTCN2019112458-appb-000006
表4中，所述聚丙烯为共聚聚丙烯或均聚聚丙烯，所述聚丙烯的熔体质量流动速率为1～100g/10min；所述增韧剂为乙烯-丙烯共聚物、乙烯-丁烯共聚物、乙烯-辛烯共聚物中的至少一种，所述增韧剂的密度为0.85～0.9g/cm 3，熔体质量流动速率为0.3～30g/10min。
由表4可见，本发明聚丙烯组合物中，纳米云母为2～4重量份时，其隔声效果更好，密度更小；当纳米云母为3重量份时，所得聚丙烯组合物的隔声效果和密度最佳。
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 (10)

  1. 一种聚丙烯组合物，其特征在于，包括下述重量份的组分：聚丙烯63～99份，增韧剂0～30份，纳米云母1～5份；所述纳米云母中，90％以上纳米云母的径厚比为(30～100)：1。
  2. 如权利要求1所述的聚丙烯组合物，其特征在于，所述纳米云母为2～4重量份。
  3. 如权利要求2所述的聚丙烯组合物，其特征在于，所述纳米云母为3重量份。
  4. 如权利要求1所述的聚丙烯组合物，其特征在于，所述纳米云母中，90％以上纳米云母的径厚比为(60～90)：1。
  5. 如权利要求1所述的聚丙烯组合物，其特征在于，所述纳米云母中，90％以上纳米云母的径厚比为80：1。
  6. 如权利要求1所述的聚丙烯组合物，其特征在于，如下(a)、(b)中的至少一项：
    (a)所述聚丙烯为共聚聚丙烯或均聚聚丙烯，所述聚丙烯的熔体质量流动速率为1～100g/10min，所述聚丙烯的熔体质量流动速率是根据ASTM D1238使用2.16kg重量并在230℃的温度测量；
    (b)所述增韧剂为乙烯-丙烯共聚物、乙烯-丁烯共聚物、乙烯-辛烯共聚物中的至少一种，所述增韧剂的密度为0.85～0.9g/cm 3，熔体质量流动速率为0.3～30g/10min；所述增韧剂的熔体质量流动速率是根据ASTM D1238使用2.16kg重量并在190℃的温度测量。
  7. 如权利要求1～6任一项所述的聚丙烯组合物，其特征在于，还包括下述重量份的组分：助剂0.2～2份。
  8. 如权利要求7所述的聚丙烯组合物，其特征在于，所述助剂为抗氧剂、光稳定剂中的至少一种。
  9. 如权利要求8所述的聚丙烯组合物，其特征在于，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；所述光稳定剂为受阻胺类光稳定剂。
  10. 如权利要求1～9任一项所述聚丙烯组合物的制备方法，其特征在于，包括以下步骤：将聚丙烯组合物中的各组分混合均匀后加入双螺杆挤出机中，进行熔融混炼和挤出造粒，得到聚丙烯组合物。
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