Modified polypropylene composite material and preparation method thereof

A composite material and polypropylene technology, which is applied in the field of modified polypropylene composite material and its preparation, can solve the problems of poor compatibility between PP and inorganic materials, reduced processing fluidity, complicated preparation methods, etc., and achieves difficult adhesion and agglomeration. , The effect of improving heat resistance and improving mechanical properties

Inactive Publication Date: 2017-11-17
GUANGXI TEACHERS EDUCATION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PP also has shortcomings, such as: poor room temperature and low temperature impact resistance, poor heat resistance, etc. Many researchers have modified the properties of PP.
The impact performance and heat resistance of PP are improved by adding inorganic materials such as calcium carbonate, montmorillonite, and glass fiber, but the compatibility between PP and inorganic materials is poor, so surface modification of inorganic materials is required to improve PP / Compatibility issues with inorganic materials
On the other hand, the addition of inorganic materials and elastomers will also reduce the fluidity of PP processing, which is not conducive to processing, and the existing polypropylene composite materials are complicated to prepare, use a variety of raw materials, and have high costs. Therefore, , the development of a modified polypropylene composite material with simple preparation process, less raw materials, low cost, excellent impact resistance and toughness has broad market prospects

Method used

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  • Modified polypropylene composite material and preparation method thereof
  • Modified polypropylene composite material and preparation method thereof
  • Modified polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A modified polypropylene composite material is prepared by using polypropylene, styrene-butadiene thermoplastic elastomer, talcum powder and dicumyl peroxide at a mass ratio of 9:1:1:0.3 to prepare the modified polypropylene composite material.

[0037] A preparation method of modified polypropylene composite material, comprising the following steps:

[0038] Step 1, take the polypropylene of 90 weight parts, the styrene-butadiene thermoplastic elastomer of 10 weight parts, the talcum powder of 10 weight parts and the dicumyl peroxide of 3 weight parts;

[0039] Step 2. Add the polypropylene, styrene-butadiene thermoplastic elastomer and talcum powder in the above parts by weight to the internal mixer and mix them for the first internal mixing. The time is 3 minutes, the temperature is 165 ° C, and the rotation speed is 50 rpm;

[0040] Step 3, adding 3 parts by weight of dicumyl peroxide for the second banburying, the time is 3min, the temperature is 150°C, and the rot...

Embodiment 2

[0043] A modified polypropylene composite material is prepared by using polypropylene, styrene-butadiene thermoplastic elastomer, talcum powder and dicumyl peroxide in a mass ratio of 9:1:1:0.33.

[0044] A preparation method of modified polypropylene composite material, comprising the following steps:

[0045] Step 1, take the polypropylene of 90 weight parts, the styrene-butadiene thermoplastic elastomer of 10 weight parts, the talcum powder of 10 weight parts and the dicumyl peroxide of 3.3 weight parts;

[0046] Step 2. Add the polypropylene, styrene-butadiene thermoplastic elastomer and talcum powder in the above parts by weight to the internal mixer and mix them for the first internal mixing. The time is 4 minutes, the temperature is 168° C., and the rotation speed is 55 rpm;

[0047] Step 3, adding 3.3 parts by weight of dicumyl peroxide for the second banburying, the time is 4min, the temperature is 152°C, and the rotating speed is 43rpm;

[0048] Step 4, taking out the...

Embodiment 3

[0050] A modified polypropylene composite material is prepared by using polypropylene, styrene-butadiene thermoplastic elastomer, talcum powder and dicumyl peroxide in a mass ratio of 9:1:1:0.4 to prepare the modified polypropylene composite material.

[0051] A preparation method of modified polypropylene composite material, comprising the following steps:

[0052] Step 1, take by weighing the polypropylene of 90 parts by weight, the styrene-butadiene thermoplastic elastomer of 10 parts by weight, the talcum powder of 10 parts by weight and the dicumyl peroxide of 4 parts by weight;

[0053] Step 2. Add the polypropylene, styrene-butadiene thermoplastic elastomer and talcum powder in the above parts by weight to the internal mixer and mix them for the first internal mixing. The time is 5 minutes, the temperature is 170° C., and the rotation speed is 60 rpm;

[0054] Step 3, adding 4 parts by weight of dicumyl peroxide for the second banburying, the time is 5min, the temperatu...

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PUM

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Abstract

The invention discloses a modified polypropylene composite material and a preparation method thereof. The modified polypropylene composite material is prepared from polypropylene, a butylbenzene thermoplastic elastomer, powdered steatile and dicumyl peroxide according to a mass ratio of 9: 1: 1: 0.3-0.4. The preparation method comprises adding polypropylene, a butylbenzene thermoplastic elastomer and powdered steatile into an internal mixer, carrying out primary internal mixing at a temperature of 165-170 DEG C at a rotation rate of 50-60rpm for 3-5min, adding 3-4 parts by weight of dicumyl peroxide into the mixture, carrying out secondary internal mixing at a temperature of 150-155 DEG C at a rotation rate of 40-45rpm for 3-5min, taking out the mixture in the internal mixer and carrying out granulation on the mixture. The modified polypropylene composite material has high shock resistance, good stretching performances, high bending strength and a high Vicat softening point.

Description

technical field [0001] The invention relates to the field of modification of polypropylene composite materials. More specifically, the present invention relates to a modified polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is one of the important polymer materials. It has the advantages of low density, good processing performance, good tensile strength and modulus, so it is widely used in many fields. However, PP also has shortcomings, such as poor impact resistance at room temperature and low temperature, poor heat resistance, etc. Many researchers have modified the performance of PP. The impact performance and heat resistance of PP are improved by adding inorganic materials such as calcium carbonate, montmorillonite, and glass fiber, but the compatibility between PP and inorganic materials is poor, so surface modification of inorganic materials is required to improve PP / Compatibility issues with inorgan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L53/02C08K13/06C08K9/06C08K9/04C08K3/34C08K5/14C08K5/134B29B7/72C08J3/28C08J3/24
CPCB29B7/72C08J3/242C08J3/28C08J2323/12C08L23/12C08L2201/08C08L2207/04C08L53/02C08K13/06C08K9/06C08K9/04C08K3/34C08K5/14C08K5/1345
Inventor 刘钰馨
Owner GUANGXI TEACHERS EDUCATION UNIV
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