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Polypropylene (PP) composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of polypropylene composite materials and its preparation, can solve the problems of reduced processing performance, reduced mechanical strength, poor component dispersion, etc., to achieve improved dimensional stability, reduced viscosity, and improved mechanical strength Effect

Inactive Publication Date: 2012-01-25
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in order to reduce costs and increase market competitiveness, many manufacturers increase the content of fillers in the processing of plastic products containing PP to reduce costs, but this leads to poor dispersion of components and reduced processing performance of plastic products containing PP during processing. Defects caused by poor dispersion of fillers such as pitting and streaks will reduce the mechanical strength of the plastic product containing PP and be easily damaged

Method used

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  • Polypropylene (PP) composite material and preparation method thereof

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preparation example Construction

[0057] The preparation method of polypropylene composite material of the present invention comprises the steps:

[0058] S1: Weigh each component according to the formula of the polypropylene composite material;

[0059] S2: Mix the weighed components to form a mixed material;

[0060] S3: extruding and granulating the mixed material to obtain the polypropylene composite material.

[0061] In step S2 of the above polypropylene composite material preparation method, each component should be mixed as uniformly as possible. The method for forming the mixed material is preferably as follows:

[0062]First mix PP resin, toughening agent, graft compatibilizer and coupling agent at 100-150r / min for 1-2min; then add talcum powder and various lubricants, dispersants, etc. and mix at 400-700r / min -5min to form a mixed material.

[0063] In the S2 step, the extrusion of the mixed material formed after the mixing of the components is preferably performed by a twin-screw extruder. The...

Embodiment 1

[0067] The formula component of polypropylene composite material percentage by weight is as follows:

[0068] PP resin 72%;

[0069] Grafted PP 2%;

[0070] Toughener 10%;

[0071] Talc 14%;

[0072] Lubricant 0.5%;

[0073] Titanate coupling agent 0.3%;

[0074] Nucleating agent 0.7%;

[0075] Dispersant 0.5%.

[0076] The preparation method of polypropylene composite material is as follows:

[0077] S1: Weigh each component according to the formula of the above-mentioned polypropylene composite material;

[0078] S2: First mix PP resin, toughening agent, graft compatibilizer, and coupling agent at 100-150r / min for 1min; then add talcum powder, various lubricants, dispersants, etc. and mix at 400-500r / min for 5min ; Form a mixed material.

[0079] S3: Extrude and granulate the mixed material to obtain the PP filled composite material; the temperature of each section of the mixed material in the L / D, 36:1 twin-screw extruder is respectively: Zone 1 180°C, 230°C in th...

Embodiment 2

[0081] The formula component of polypropylene composite material percentage by weight is as follows:

[0082] PP resin 52%;

[0083] Grafted PP 2%;

[0084] Grafted POE 1.5%;

[0085] Toughener 20%;

[0086] Talc 20%;

[0087] Lubricant 0.5%;

[0088] Titanate coupling agent 1%;

[0089] Nucleating agent 1%;

[0090] Dispersant 2%.

[0091] The preparation method of polypropylene composite material is as follows:

[0092] S1: Weigh each component according to the formula of the above-mentioned polypropylene composite material;

[0093] S2: First mix PP resin, toughening agent, graft compatibilizer, and coupling agent at 100-150r / min for 1min; then add talcum powder, various lubricants, dispersants, etc. and mix at 400-500r / min for 5min ; Form a mixed material.

[0094] S3: Extrude and granulate the mixed material to obtain the PP filled composite material; the temperature of each section of the mixed material in the L / D, 36:1 twin-screw extruder is respectively: Zone...

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Abstract

The invention discloses a polypropylene (PP) composite material and a preparation method thereof. The polypropylene composite material consists of the following components in percentage by weight: 52-72 percent of PP resin, 1-6 percent of compatilizer, 10-20 percent of toughening agent, 6-20 percent of talcum powder, 0.3-0.5 percent of lubricant, 0.2-1 percent of coupling agent, 0.2-1 percent of nucleating agent and 0.5-2 percent of dispersing agent, wherein the compatilizer is grafted PP and / or grafted POE (Polyolefin Elastomer). Compared with the prior art, the PP composite material has the advantages of high impact strength, low shrinkage ratio, high mechanical property, high flow property, easiness for processing and molding, high heat resistance and high size stability.

Description

[technical field] [0001] The invention relates to the field of polymer materials, in particular to a polypropylene composite material and a preparation method thereof. [Background technique] [0002] Polypropylene (PP) is a highly crystalline material with a high melting point, low price, and excellent physical and chemical properties: chemical resistance, excellent electrical insulation, good mechanical strength and good It is widely used in automotive, electrical, mechanical, radio, textile, engineering accessories, daily necessities, turnover boxes, medical and health equipment, construction and other materials. [0003] At present, in order to reduce costs and increase market competitiveness, many manufacturers increase the content of fillers in the processing of plastic products containing PP to reduce costs, but this leads to poor dispersion of components and reduced processing performance of plastic products containing PP during processing. Defects such as pitting an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L51/06C08K13/02C08K3/34B29C47/92B29C48/92
Inventor 徐东徐永罗田元
Owner SHENZHEN KEJU NEW MATERIAL