Low-diffusion modified polypropylene composite material and preparation method thereof

A composite material and polypropylene technology, applied in the field of modified polypropylene composite materials, can solve the problems of unsuitable blending modification process, equipment, complex process conditions, etc., and achieve excellent mechanical properties, low odor emission, and glossiness. high effect

Active Publication Date: 2012-05-23
SUZHOU SUNWAY POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The devolatilization process refers to the use of professional devolatilization equipment to reduce the content of small molecule volatiles in the synthesis process of polypropylene. The equipment and process conditions required by this method are relatively complicated, and it is not suitable for the blending modification process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Prepare according to the following formula:

[0040] (a) 70 parts by mass of polypropylene

[0041] (b) 30 parts by mass of mineral filler (wollastonite)

[0042] (c) 3 parts by mass of odor adsorbent

[0043] (d) 0.1 parts by mass of additives

[0044] Wherein, the odor adsorbent includes: bentonite, porous silica and activated alumina, according to the mass ratio, bentonite: porous silica: activated alumina=1: 1: 1;

[0045]First mix polypropylene and mineral filler at 1200 rpm for 5 minutes, then add odor adsorbent, stir at 1500 rpm for 10 minutes, and finally add additives, at 1200 rpm Stir for 5 minutes at a rotational speed to obtain a premix. The premixed material is fed into a twin-screw extruder, extruded and granulated to obtain a low-emission modified polypropylene composite material, which can be used for automotive interior parts.

[0046] After testing, the properties of the prepared polypropylene composite material are as follows:

[0047] Density 1...

Embodiment 2

[0057] Prepare according to the following formula:

[0058] (a) 80 parts by mass of polypropylene

[0059] (b) 20 parts by mass of mineral filler

[0060] (c) 3 parts by mass of odor adsorbent

[0061] (d) 0.1 parts by mass of additives

[0062] Wherein, mineral filler comprises: wollastonite and calcium carbonate, according to mass ratio, wollastonite: calcium carbonate=1: 1; Odor adsorbent comprises: bentonite, porous silica and activated alumina, according to mass ratio, bentonite: porous Silica: activated alumina = 1:1:1;

[0063] First mix polypropylene and mineral filler at 1200 rpm for 5 minutes, then add odor adsorbent, stir at 1500 rpm for 10 minutes, and finally add additives, at 1200 rpm Stir for 5 minutes at a rotational speed to obtain a premix. The premixed material is fed into a twin-screw extruder, extruded and granulated to obtain a low-emission modified polypropylene composite material, which can be used for automotive interior parts.

[0064] After tes...

Embodiment 3

[0075] Prepare according to the following formula:

[0076] (a) 80 parts by mass of polypropylene

[0077] (b) 20 parts by mass of mineral filler

[0078] (c) 3 parts by mass of odor adsorbent

[0079] (d) 0.1 parts by mass of additives

[0080] Wherein, mineral filler comprises: wollastonite and calcium carbonate, according to mass ratio, wollastonite: calcium carbonate=1: 2; Odor adsorbent comprises: bentonite, porous silica and activated alumina, according to mass ratio, bentonite: porous Silica: activated alumina = 1:1:1;

[0081] First mix polypropylene and mineral filler at 1200 rpm for 5 minutes, then add odor adsorbent, stir at 1500 rpm for 10 minutes, and finally add additives, at 1200 rpm Stir for 5 minutes at a rotational speed to obtain a premix. The premixed material is fed into a twin-screw extruder, extruded and granulated to obtain a low-emission modified polypropylene composite material, which can be used for automotive interior parts.

[0082] After tes...

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Abstract

The invention belongs to the field of modified polypropylene composite materials and relates to a low-odor and low-diffusion modified polypropylene composite material suitable for manufacturing interior decorative parts of automobiles. The composite material comprises the following components in part by weight: 60 to 90 parts of polypropylene, 0 to 40 parts of mineral filler, 1 to 5 parts of odor adsorbent and 0.1 to 1 part of assistant, wherein the odor adsorbent is a mixture of three types of clay, bentonite, porous silicon dioxide, activated aluminum oxide or molecular sieve. The prepared modified polypropylene composite material has the characteristics of high surface glossiness, high shock resistance and intensity, melt flowing property and mechanical property; due to the adoption of various gas adsorbents, the product has low odor diffusion property and a total carbon value of between 13.7 and 24.5 mu gC / g; simultaneously, needed raw materials have wide sources and are readily available.

Description

technical field [0001] The invention belongs to the field of modified polypropylene composite materials, in particular to a modified polypropylene composite material with an odor adsorbent added, in particular to a low-odor, low-emission modified polypropylene composite material suitable for manufacturing automotive interior parts ; The present invention also relates to the preparation method of the modified polypropylene composite material. Background technique [0002] Modified polypropylene materials are increasingly used in the automotive field. Various automotive interior parts made of modified polypropylene materials can meet the corresponding requirements in terms of performance, but because these materials will release to varying degrees Contains some volatile substances with bad smell or harmful to human body. [0003] In the current prior art, the addition of adsorbent or devolatilization process is generally used to reduce the odor and harmful volatile substances...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/10C08K13/04C08K7/26C08K3/34C08K3/22
Inventor 顾在春任俊余林华李旭
Owner SUZHOU SUNWAY POLYMER
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