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Preparation method of polypropylene reinforced plasticized modifier

A toughening modifier and polypropylene-reinforced technology, which is applied in the treatment of dyed organosilicon compounds, dyed polymer organic compounds, fibrous fillers, etc., can solve problems that affect the injection molding process and product quality, and overcome flow problems. Poor performance, low price, and low production cost

Inactive Publication Date: 2012-12-19
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few ways to increase the strength and toughness of polypropylene while maintaining melt flow
The melt fluidity is an important indicator of large polypropylene injection molding parts (such as automobile bumpers, instrument panels, etc.), and materials with low melt fluidity will seriously affect the injection molding process and product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method for polypropylene reinforced toughening modifier, it comprises the steps:

[0024] 1) According to the weight of silane coupling agent γ-aminopropyltriethoxysilane as 2.5% of the weight of silicon dioxide, select silane coupling agent γ-aminopropyltriethoxysilane and silicon dioxide, The average particle diameter of silicon is 10 nm. Surface lipophilic treatment is as follows: γ-aminopropyltriethoxysilane is configured into an isopropanol solution with a concentration of 0.5mol / L, and the isopropanol solution containing γ-aminopropyltriethoxysilane is added Mix well with silicon dioxide, heat at 50° C. for 4 hours to obtain spare A component.

[0025] 2) Spare B 1 Preparation of components (polymer emulsion): 20 parts by mass of silicone resin emulsion, 80 parts by mass of polyacrylate emulsion, blended to obtain standby B 1 Components, wherein the viscous flow temperature of silicone resin and polyacrylate is 5-25°C lower than the melting temper...

Embodiment 2

[0029] A preparation method for polypropylene reinforced toughening modifier, it comprises the steps:

[0030] 1) According to the weight of silane coupling agent γ-aminopropyltriethoxysilane as 1.5% of the weight of silicon dioxide, select silane coupling agent γ-aminopropyltriethoxysilane and silicon dioxide, The average particle diameter of silicon is 30 nm. The surface lipophilic treatment is as follows: configure γ-aminopropyltriethoxysilane into an isopropanol solution with a concentration of 0.3mol / L, add the isopropanol solution containing γ-aminopropyltriethoxysilane Mix evenly with silicon dioxide and heat at 50°C for 4 hours to obtain spare A component.

[0031] 2) Spare B 2 Preparation of components (polymer emulsion): 20 parts by mass of silicone resin emulsion, 80 parts by mass of ethylene-vinyl acetate copolymer emulsion, blended to obtain standby B 2 Components, wherein the viscous flow temperature of silicone resin and ethylene-vinyl acetate copolymer is 5-...

Embodiment 3

[0035] A preparation method for polypropylene reinforced toughening modifier, it comprises the steps:

[0036] 1) The weight of the silane coupling agent γ-aminopropyltriethoxysilane is 0.5% of the weight of silica, and the silane coupling agent γ-aminopropyltriethoxysilane and silicon dioxide are selected, and the The average particle diameter of silicon is 50 nm. The surface lipophilic treatment is as follows: γ-aminopropyltriethoxysilane is prepared in an isopropanol solution with a concentration of 0.05mol / L, and the isopropanol solution containing γ-aminopropyltriethoxysilane is added to the Mix well with silicon dioxide, heat at 50° C. for 4 hours to obtain spare A component.

[0037] 2) Spare B 3 Preparation of components (polymer emulsion): 20 parts by mass of silicone resin emulsion, 20 parts by mass of silicone-acrylate copolymer emulsion, 60 parts by mass of polyacrylate emulsion, blended to obtain standby B 3 Components, wherein the viscous flow temperature of s...

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PUM

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Abstract

The invention relates to a preparation method of polypropylene reinforced plasticized modifier, comprising the following steps: 1) performing the surface lipophilic treatment: selecting lipophilic additive and silicon dioxide wherein the weight of the lipophilic additive accounts for 0.5-2.5% of the weight of the silicon dioxide; preparing lipophilic additive isopropanol solution with concentration of 0.05-0.5mol / L and adding the solution into the silicon dioxide, uniformly mixing the mixture and heating the mixture for 2-4 hours at 50-60 DEG C to obtain the standby A component; 2) selecting polymer emulsion and the standby A component in ratio of 1:1; stirring the standby A component at room temperature and gradually adding the standby A component into the polymer emulsion and uniformly stirring and mixing the mixture; stopping stirring and spray drying the mixture to obtain the composite powder material and extruding and granulating the composite powder material to obtain the polypropylene reinforced plasticized modifier. The modifier can increase the intensity and toughness of the polypropylene and has no obvious effect on melt flow.

Description

technical field [0001] The invention relates to a preparation method of a polypropylene reinforcing and toughening modifier. Background technique [0002] Polypropylene (PP) has good mechanical properties, heat resistance, chemical resistance, insulation, molding processability and low density, low cost and wide application. The application fields of PP involve auto parts, electrical parts, building materials, insulating materials, packaging materials, daily necessities, etc. [0003] Due to the poor toughness of polypropylene, it needs to be modified for impact toughening. At present, the methods for modifying polypropylene mainly include: random copolymerization modification, block copolymerization modification, graft copolymerization modification, rubber-plastic blending modification, plastic-plastic blending modification, inorganic particle modification, β crystal Type nucleating agent modification, nanocomposite modification, etc. Such as: Xu Gang et al. (see Xu Gang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/28C09C3/10C09C3/12C08K9/06C08K9/04C08L23/12
Inventor 张超灿吴力立
Owner WUHAN UNIV OF TECH
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