Polypropylene composite material with high paint adhesion and preparation method thereof

A composite material, polypropylene technology, applied in the field of formula development and preparation, can solve problems such as poor paint adhesion, and achieve the effects of improving surface polarity, improving compatibility, and reducing production costs

Active Publication Date: 2016-03-30
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of poor paint adhesion of existing polypropylene materials, the present invention discloses a polypropylene composite material with high paint adhesion and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The raw material of the high paint adhesion polypropylene composite material in the present embodiment consists of:

[0023] Polypropylene resin, 69.3 parts;

[0024] Polypropylene modifier, 5 parts;

[0025] Modified filler, 15 parts;

[0026] Toughening agent, 10 parts;

[0027] Antioxidant, 0.2 parts;

[0028] Lubricant, 0.5 parts.

[0029] Concrete preparation method comprises the following steps:

[0030] (1) Add talcum powder, glycidyl acrylate, silane coupling agent and stearic acid into the high-speed mixer in a weight ratio of 93.5:5:1:0.5, and the temperature is 110 o C. Mix at a speed of 800r / min for 15min;

[0031] (2) Add the raw materials into the high-speed mixer according to the ratio, and mix for 5 minutes at 800r / min;

[0032] (3) Put the mixed materials into the parallel twin-screw extruder to melt, extrude and granulate. The barrel temperature of the extruder is 180 o C, the screw speed is 500r / min, the melt pressure is 2MPa, and the vacuum d...

Embodiment 2

[0035] The raw material of the high paint adhesion polypropylene composite material in the present embodiment consists of:

[0036] Polypropylene resin, 64.3 parts;

[0037] Polypropylene modifier, 5 parts;

[0038] Modified filler, 20 parts;

[0039] Toughening agent, 10 parts;

[0040] Antioxidant, 0.2 parts;

[0041] Lubricant, 0.6 parts.

[0042] Concrete preparation method comprises the following steps:

[0043] (1) Add the filler (a mixture of calcium carbonate and wollastonite), glycidyl acrylate, silane coupling agent and stearic acid into the high-speed mixer in a weight ratio of 93.5:5:1:0.5, and the temperature is 110 o C. Mix at a speed of 900r / min for 20min;

[0044] (2) Put the raw materials into the high-speed mixer according to the ratio, and mix at 900r / min for 6min;

[0045] (3) Put the mixed materials into the parallel twin-screw extruder to melt, extrude and granulate. The barrel temperature of the extruder is 210 o C, the screw speed is 600r / min, t...

Embodiment 3

[0048] The raw material of the high paint adhesion polypropylene composite material in the present embodiment consists of:

[0049] Polypropylene resin, 59.3 parts;

[0050] Polypropylene modifier, 5 parts;

[0051] Modified filler, 25 parts;

[0052] Toughening agent, 10 parts;

[0053] Antioxidant, 0.2 parts;

[0054] Lubricant, 0.7 parts.

[0055] Concrete preparation method comprises the following steps:

[0056] (1) Add the filler (a mixture of talc, whiskers and mica), glycidyl acrylate, silane coupling agent and stearic acid into the high-speed mixer in a weight ratio of 93.5:5:1:0.5, and the temperature is 115 o C. Mix at a speed of 1000r / min for 15min;

[0057](2) Add the raw materials into the high-speed mixer according to the ratio, and mix for 5 minutes at 1000r / min;

[0058] (3) Put the mixed materials into a parallel twin-screw extruder to melt, extrude and granulate. The barrel temperature of the extruder is 190 o C, the screw speed is 520r / min, the melt...

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Abstract

The invention provides a polypropylene composite material with high paint adhesion and a preparation method thereof. Through modification of surface polarity of a filler and introduction of a polypropylene modifier, the polarity of polypropylene and the filler is improved, compatibility between polypropylene and the filler is enhanced, and surface polarity of the polypropylene composite material is greatly improved; thus, the polypropylene composite material has excellent paint adhesion and can be applied to spraying and preparation of exterior decoration parts of an automobile. Moreover, the polypropylene composite material with high paint adhesion can be directly sprayed without spraying pre-treatment, so energy is saved and production cost is reduced.

Description

technical field [0001] The present invention relates to the technical field of macromolecules, in particular to a method for developing and preparing a formula for a polypropylene composite material with high paint adhesion, more specifically by introducing a polar polypropylene modifier into the polypropylene composition system, and at the same time The invention improves the polarity of the filler through modification, so as to realize the paint adhesion of the polypropylene composite material, and belongs to the field of polymer modification and processing. Background technique [0002] The synthesis method of polypropylene is simple, the source of raw materials is abundant, the weight is light, and it has good physical and mechanical properties and processing performance. At the same time, the modified polypropylene material obtained by various modification processing methods can meet the different requirements of various automobile parts Excellent cost performance mak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08L23/08C08K13/06C08K9/06C08K9/04C08K3/34C08K3/26C08K7/02B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/92514B29C2948/9258B29C2948/92704C08K2201/014C08L23/12C08L2205/025C08L2205/03C08L2205/035C08L51/06C08L23/0815C08L23/0853C08K13/06C08K9/06C08K9/04C08K3/34C08K2003/265C08K7/02
Inventor 张奎李荣群徐剑胡林
Owner ORINKO NEW MATERIAL CO LTD
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