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Modified polypropylene composite material and preparation method thereof

A technology of composite material and polypropylene, which is applied in the field of modified polypropylene composite material and its preparation, can solve the problems of slow decrease of Vicat softening point, increase of impact strength, decrease of tensile strength and bending performance, etc., and achieve improvement Decrease in tensile strength and flexural properties, effect of improved impact resistance, excellent tensile properties and flexural properties

Inactive Publication Date: 2019-04-02
江苏蓝巨人塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies have shown that as the amount of SBS increases, the impact strength of the PP / SBS blend system after one melt extrusion increases, the tensile strength and bending properties show a downward trend, and the Vicat softening point decreases slowly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A modified polypropylene composite material, comprising the following raw materials in parts by weight:

[0026] 70 parts of polypropylene, 30 parts of SBS, 1.2 parts of konjac powder, 0.5 parts of β-glucan, 1 part of keel powder, 2 parts of conifer ash, 2 parts of far-infrared ceramic powder, 3 parts of attapulgite, 3 parts of wollastonite powder , 5 parts of fumed white carbon black, 5 parts of titanium dioxide, 1.2 parts of light stabilizer, 0.8 parts of coupling agent, 3 parts of toughening agent and 4 parts of compatibilizer.

[0027] Among them, the keel powder is obtained by crushing the keel through a 400-mesh sieve, and the pine ash is obtained by crushing the ash obtained by burning pine and cypress branches and sieving through a 400-mesh sieve.

[0028] The light stabilizer is a mixture of UV absorbers and / or hindered amine light stabilizers.

[0029] A preparation method of modified polypropylene composite material, comprising the following steps:

[0030]...

Embodiment 2

[0033] A modified polypropylene composite material, comprising the following raw materials in parts by weight:

[0034] 80 parts of polypropylene, 33 parts of SBS, 1.4 parts of konjac powder, 0.65 parts of β-glucan, 1.5 parts of keel powder, 3 parts of conifer ash, 3 parts of far-infrared ceramic powder, 4 parts of attapulgite, and 4 parts of wollastonite powder Parts, 6 parts of fumed silica, 6 parts of titanium dioxide, 1.4 parts of light stabilizer, 1.0 part of coupling agent, 4 parts of toughening agent and 6 parts of compatibilizer.

[0035] Among them, the keel powder is obtained by crushing the keel through a 400-mesh sieve, and the pine ash is obtained by crushing the ash obtained by burning pine and cypress branches and sieving through a 400-mesh sieve.

[0036] The light stabilizer is a mixture of UV absorbers and / or hindered amine light stabilizers.

[0037] The preparation method of the modified polypropylene composite material of this embodiment is the same as th...

Embodiment 3

[0039] A modified polypropylene composite material, comprising the following raw materials in parts by weight:

[0040] 90 parts of polypropylene, 35 parts of SBS, 1.5 parts of konjac powder, 0.8 parts of β-glucan, 2 parts of keel powder, 4 parts of conifer ash, 4 parts of far-infrared ceramic powder, 5 parts of attapulgite, and 5 parts of wollastonite powder Parts, 7 parts of fumed silica, 7 parts of titanium dioxide, 1.5 parts of light stabilizer, 1.2 parts of coupling agent, 5 parts of toughening agent and 7 parts of compatibilizer.

[0041] Among them, the light stabilizer is composed of ultraviolet absorber UV327 and benzotriazole plus hindered amine in a mass ratio of 1:3.

[0042] Wherein, the coupling agent is methacryloxypropyltriethoxysilane, and the toughening agent is ethylene octene copolymer.

[0043] Wherein, the compatibilizer is maleic anhydride grafted polypropylene, and its grafting degree is 25%-30%.

[0044] Among them, the keel powder is obtained by cru...

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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 the following raw materials (by weight):70-90 parts of polypropylene, 30-35 parts of SBS, 1.2-1.5 parts of Konjac powder, 0.5-0.8 part of beta-glucan, 1-2 parts of powdery bone fossil of big mammals, 2-4 parts of pine and cypress ash, 2-4 parts of far infrared ceramic powder, 3-5 parts of attapulgite, 3-5 parts of wollastonite powder, 5-7 parts of fumed silica, 5-7 parts of titanium dioxide, 1.2-1.5 parts of a light stabilizer, 0.8-1.2 parts of a coupling agent, 3-5 parts of a flexibilizer and 4-7 parts of a compatilizer. The modified polypropylene composite material has good weather resistance, strong shock resistance and excellent tensile strength and bending property.

Description

technical field [0001] The invention relates to the technical field of polypropylene modification. More specifically, the present invention relates to a modified polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene has become one of the fastest-growing general-purpose plastics due to its high comprehensive performance. However, its shortcomings such as easy aging and poor impact resistance have seriously hindered the development and promotion of PP in the market. [0003] SBS is a tri-block copolymer of styrene-butadiene-styrene, which has a strong synergistic effect. When modifying PP, its flexible chain can be filled into the large spherulites of PP. In addition, SBS itself has relatively strong Good friction resistance, tensile strength, elasticity, modified PP with SBS elastomer, the two interact and complement each other, so that the mechanical properties of PP are effectively improved. However, studies have sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L53/02C08L5/02C08K13/02C08K3/36C08K3/32C08K3/34C08K3/22B29C48/92
CPCB29C48/92B29C2948/92704C08L23/12C08L2205/025C08L2205/035C08L2205/08C08L53/02C08L5/02C08K13/02C08K3/36C08K2003/325C08K3/346C08K3/34
Inventor 刘钰馨
Owner 江苏蓝巨人塑业有限公司