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A kind of high paint adhesion polypropylene composite material and preparation method thereof

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

Active Publication Date: 2018-03-20
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 800 r / min for 15 min;

[0031] (2) Add the raw materials into the high-speed mixer according to the ratio, and mix for 5 minutes at 800 r / 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 500 r / min, the melt pressure is 2 MPa, and the vacuum degree ...

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 900 r / min for 20 min;

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

[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 600 r / min, the...

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 1000 r / min for 15 min;

[0057] (2) Add the raw materials into the high-speed mixer according to the ratio, and mix for 5 minutes at 1000 r / 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 520 r / min, the ...

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Abstract

The invention provides a polypropylene composite material with high paint adhesion and a preparation method thereof. By modifying the polarity of the filler surface and introducing a polypropylene modifier, not only the polarity of the polypropylene and the filler is improved, but also the It also improves the compatibility of polypropylene and fillers, greatly increases the surface polarity of the composite material, makes the composite material have excellent paint adhesion, and is suitable for automotive exterior sprayed parts. In addition, the polypropylene composite material with high paint adhesion provided by the invention can omit the pre-spraying process and can be directly sprayed, which saves energy and reduces production costs.

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 makes...

Claims

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Application Information

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Patent Type & Authority Patents(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