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A kind of polypropylene composition and preparation method thereof

A polypropylene composition and polypropylene technology, applied in the field of polymer materials, can solve the problems of low mechanical properties of foamed materials, and achieve the effects of enhanced sound insulation, high dispersion concentration, and enhanced mechanical properties

Active Publication Date: 2021-06-11
KINGFA SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These two methods require special injection molding equipment and processes, and the mechanical properties of foamed materials are low

Method used

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  • A kind of polypropylene composition and preparation method thereof
  • A kind of polypropylene composition and preparation method thereof
  • A kind of polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0025] The components of the polypropylene composition described in Examples 1-5 are shown in Table 1.

[0026] The preparation method of the polypropylene composition described in Examples 1 to 5 is as follows: mix the components in the polypropylene composition evenly, add them into a twin-screw extruder, carry out melt mixing and extrusion granulation, and obtain polypropylene Composition; wherein, the melting and kneading temperature is 170-220° C., and the screw speed of the twin-screw extruder is 350-450 rpm.

[0027] After preparing the polypropylene compositions described in Examples 1 to 5, they were respectively injected into samples for testing density, flexural modulus and sound insulation.

[0028] The performance test method is as follows:

[0029] (1) Density: tested according to ISO1183;

[0030] (2) Flexural modulus: tested according to ISO178;

[0031] (3) Sound insulation performance: Tested in accordance with ISO R140-170 "Sound Insulation Measurement St...

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Abstract

The invention relates to a polypropylene composition and a preparation method thereof, belonging to the technical field of polymer materials. The polypropylene composition of the present invention comprises the following components by weight: 63 to 99 parts of polypropylene, 0 to 30 parts of toughening agent, and 1 to 5 parts of nano mica; in the nano mica, more than 90% of nano mica The ratio of diameter to thickness is (30-100):1. The present invention adopts nano-mica with high aspect-thickness ratio as reinforcing filler, and nano-mica with high-aspect-thickness ratio can increase the flexural modulus of polypropylene material and effectively reflect sound waves, thereby greatly improving the material's flexibility under low nano-mica content. Mechanical properties and sound insulation effect. 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 light weight, high rigidity and high sound insulation effect.

Description

technical field [0001] The invention relates to a polypropylene composition and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Vehicle noise has become an important source of noise pollution, which not only affects the comfort of vehicle drivers and passengers, but also affects the health of pedestrians. Therefore, it is necessary to develop materials with better sound insulation effect and apply them to automobiles. Automobile lightweight is an important direction for the development of the automobile industry, which requires the use of lightweight materials. Polymer materials have the characteristics of light weight and easy processing, and have been widely used in automobiles. However, polymer materials usually have poor sound insulation effect, and it is difficult to meet the requirements of sound insulation performance. [0003] In order to improve the sound insulation performance of polymer material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L23/12C08L23/08C08K3/34
CPCC08K3/34C08K2201/011C08K2201/016C08L23/12C08L23/14C08L23/0815
Inventor 雷亮吴亦建苏娟霞彭莉卢朝亮孙刚杨波罗忠富
Owner KINGFA SCI & TECH CO LTD
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