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Directly sprayed polypropylene material and preparation method thereof

A polypropylene material and polypropylene technology, applied in the field of polypropylene materials and their preparation, can solve the problems of soft, scratch-prone, sticky products, etc., and achieve the effects of convenient operation, not easy to scratch, and simple production process

Inactive Publication Date: 2010-07-28
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method also has disadvantages, such as EVA, EMA, EEA and other materials are very soft and the surface is sticky, making the product soft and prone to scratches, marks, etc.
Moreover, if the products produced by this material are not handled well, after the injection molded parts are sprayed with paint, the paint will easily fall off after a few days

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of PP / ABS alloy. In this example, the polypropylene material used is homopolypropylene, and the typical grade is T30S of Maoming Petrochemical; the selected second component polymer material is ABS; the compatibilizer used is PP-g-ABS; the filler used The agent is talcum powder; the lubricant is stearamide lubricant; Phosphate tris(2,4-di-tert-butylphenyl ester) auxiliary antioxidant is compounded at a ratio of 1:1. Embodiment 1 formula is as follows (mass parts):

[0039] Polypropylene 100

[0040] ABS 5

[0041] PP-g-ABS 2

[0042] filler 3

[0043] Lubricant 0.2

[0044] Antioxidant 0.2.

[0045] Preparation:

[0046] 1) Weigh the raw materials according to the proportion, and stir in a high-speed mixer for 5-10 minutes at high speed to mix evenly;

[0047] 2) Add the mixed raw materials into a twin-screw extruder, melt extrude, and granulate.

[0048] Twin-screw extruder temperature: the temperature of the first zone is 170-210°C; the temperatu...

Embodiment 2

[0050] Preparation of PP / SAN alloy. In this example, the polypropylene material used is homopolypropylene, the typical grade is T30S of Maoming Petrochemical; the selected second component polymer material is SAN; the compatibilizer used is PP-g-SAN; the filler used The agent is calcium carbonate; the lubricant is stearic acid lubricant; Phosphate tris(2,4-di-tert-butylphenyl ester) auxiliary antioxidant is compounded at a ratio of 1:2. Embodiment 2 formula is as follows (mass parts):

[0051] Polypropylene 100

[0052] SAN 10

[0053] PP-g-SAN 4

[0054] filler 5

[0055] Lubricant 0.25

[0056] Antioxidant 0.3.

[0057] Preparation:

[0058] 1) Weigh the raw materials according to the proportion, and stir in a high-speed mixer for 5-10 minutes at high speed to mix evenly;

[0059] 2) Add the mixed raw materials into a twin-screw extruder, melt extrude, and granulate.

[0060] Twin-screw extruder temperature: the temperature of the first zone is 170-210°C; the tempe...

Embodiment 3

[0062] Preparation of PP / PMMA alloy. In this example, the polypropylene material used is copolymerized polypropylene, and the typical grade is AW564 of Singapore polyolefin; the selected second component polymer material is PMMA; the compatibilizer used is PP-g-MAH; The filler is barium sulfate; the lubricant is PE wax; the antioxidant is tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol main antioxidant and phosphite tri( 2,4-di-tert-butylphenyl ester) secondary antioxidant compounded at a ratio of 1:2. Embodiment 3 formula is as follows (mass parts):

[0063] Polypropylene 100

[0064] PMMA 15

[0065] PP-g-MAH 6

[0066] filler 7

[0067] Lubricant 0.3

[0068] Antioxidant 0.3.

[0069] Preparation:

[0070] 1) Weigh the raw materials according to the proportion, and stir in a high-speed mixer for 5-10 minutes at high speed to mix evenly;

[0071] 2) Add the mixed raw materials into a twin-screw extruder, melt extrude, and granulate.

[0...

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Abstract

The invention relates to a directly sprayed polypropylene material and a preparation method thereof. The polypropylene material is prepared with the following materials: polypropylene, second component high polymer material, compatilizer, filler, lubricating agent and antioxidant. The preparation method includes the following steps: (1) the materials are weighed according to a ratio, and are uniformly mixed in a high-speed mixer at a high speed for 5 to 10 minutes; (2) the mixed material is added in a double-screw extruder, melted, extruded and granulated. The polypropylene material has high rigidity and good sprayability, cannot be easily scratched and chipped and cannot easily leave traces, and moreover, the preparation method has the advantages of simple technique, convenient operationand low cost.

Description

technical field [0001] The invention relates to the technical field of polymer materials, and more specifically relates to a directly sprayable polypropylene material and a preparation method thereof. Background technique [0002] At present, for unmodified polypropylene (Polypropylene, PP) materials, ordinary paints cannot be directly sprayed on the surface thereof. Because the unmodified PP material has the characteristics of low polarity, low surface performance, and non-porous, general solvents have basically no solubility for it, so ordinary paint has no adhesion to it, and it is difficult to directly spray on its surface . [0003] Therefore, the traditional method of spraying PP is to firstly treat the surface of the product that needs to be sprayed, and then spray paint on this basis. There are generally two treatment methods: one is to use flame and arc treatment, but because of the disadvantages of expensive equipment and inconvenient operation, the application o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L55/02C08L25/06C08L33/20C08L33/12C08K13/02B29B9/06B29C47/92C09D123/12C09D123/14C09D155/02C09D125/06C09D133/12C09D133/20B29C48/40B29C48/92
CPCB29C48/04B29C48/40
Inventor 杨德武
Owner SHENZHEN KEJU NEW MATERIAL
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