High-modulus low-shrinkage low-filling polypropylene composite material

A technology of low shrinkage and composite materials, applied in the field of polymer materials, can solve the problems of reduced impact strength, high hardness and modulus, and low shrinkage, and achieve the effects of low shrinkage, high modulus, and low cost

Inactive Publication Date: 2013-04-17
SUZHOU RUNJIA ENGINEER PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the above-mentioned defects in the prior art, the present invention provides a high modulus, low shrinkage and low filling polypropylene composite material and its preparation method, the method disperses and contacts nanomaterials in the polypropylene material well, nano The advantages of the material are well utilized. The polypropylene composite mater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] A preparation method of high modulus, low shrinkage and low filling polypropylene composite material includes the following steps:

[0041] (1) Modified nano-filler masterbatch: In the solution, swell the nano-filler organicized with octadecylammonium salt with maleic anhydride and a small amount of auxiliary swelling agent; the swollen organic nano-filler is then combined with powdery The high-fluidity polypropylene and an appropriate amount of initiator undergo a melt reaction in the mixer, so that the nano-filler and the grafted polypropylene are fully dispersed and contacted, and a polypropylene / nano-filler grafted intercalation blend is obtained. Nano-filler masterbatch;

[0042] (2) Weigh the raw materials according to the weight ratio;

[0043] (3) Dry-mix polypropylene, modified nano-filler masterbatch, toughener, heat stabilizer DSTP, antioxidant 1010, and antioxidant 168 in a high-speed mixer for 3-5 minutes;

[0044] (4) Put the mixed raw materials in a twin-screw m...

Example Embodiment

[0046] Example 1:

[0047] First, the modified montmorillonite masterbatch is prepared, and the specific steps are: swelling the montmorillonite organicized with octadecylammonium salt with maleic anhydride and a small amount of auxiliary swelling agent in the solution; the swollen organic montmorillonite The weight ratio of soil to the powdery high-fluidity polypropylene is 85:15, 0.5% initiator is melted in the mixer, so that the montmorillonite and the grafted polypropylene are fully dispersed and contacted to obtain a polypropylene / Montmorillonite graft intercalation blend, that is, modified nano-montmorillonite masterbatch.

[0048] Then prepare materials according to the group distribution ratio in the table:

[0049] Types of name Content (parts) Polypropylene Homopolymer and copolymer polypropylene blends with different fluidity68 Modified montmorillonite masterbatch Polypropylene / montmorillonite graft intercalation blend6 Toughener POE884225 Thermal oxygen stabiliz...

Example Embodiment

[0051] Example 2:

[0052] Prepare materials according to the following group distribution ratio:

[0053] Types of name Content (parts) Polypropylene Homopolymer and copolymer polypropylene blends with different fluidity74 Modified montmorillonite masterbatch Polypropylene / montmorillonite graft intercalation blend6 Toughener POE884219 Thermal oxygen stabilizer DSTP Stearyl thiodipropionate0.5 Antioxidant 1010 Tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester0.3 Thermal oxygen stabilizer 168 Tris(2,4-di-tert-butylphenyl) phosphite0.2

[0054] The above materials are dry blended in a high-speed mixer for 3-5 minutes, and then melted and extruded in a twin-screw extruder for granulation. The process is: 180~190℃ in the first zone, 200~210℃ in the second zone, and three Area 200~210℃, Area 4 210~215℃, Area 5 210~215, Area 6 210~215, Area 7 215~225, Area 8 215~225, Area 9 215~225, Area 10 215~225; Stay The time is 1-2 minutes and the pressure is ...

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PUM

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Abstract

The invention discloses a high-modulus low-shrinkage low-filling polypropylene composite material. The composite material comprises the following materials in parts by weight: 68-97 parts of polypropylene, 2-10 parts of modified filler master batch, 0.1-1.0 part of heat stabilizer DSTP (Disteaxyl Thiodipropionate), 0.1-1.0 part of antioxidant 1010, and 0.1-0.5 part of antioxidant 168. The preparation method for the high-modulus low-shrinkage low-filling polypropylene composite material comprises the following steps of: (1), preparing modified nanometer filler master batch; (2), weighing the materials in parts by weight; (3), carrying out dry-mixing on the polypropylene, the modified nanometer filler master batch, a flexibilizer, the heat stabilizer DSTP, the antioxidant 1010 and the antioxidant 168 in a high-speed mixer for 3-5 minutes; and (4), putting the mixed materials to a double-screw compressor for fusing, extruding and pelleting. The composite material has the advantages of small usage amount of the filling material, high modulus and low shrinkage; and the process for preparing the polypropylene composite material is simple and low in cost.

Description

technical field [0001] The invention relates to a polymer material, more specifically, to a high-modulus, low-shrinkage and low-filling polypropylene composite material. Background technique [0002] As a new type of artificial material, plastic has been widely used in all walks of life of the national economy and people's lives. Usually the raw materials for the production of plastic products are pure resins, such as PE, PP, ABS, etc., which are directly processed and formed. With the acceleration of the industrial application of polymer materials and composite materials, various industrial sectors continue to put forward higher requirements, such as higher tensile strength, modulus, thermal conductivity, thermal distortion temperature, lower thermal expansion and cost, etc. , pure resin seems powerless. Adding various non-metallic and metal powder fillers to pure resin can improve various properties of plastic resin and make it meet the required technical indicators and ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/16C08L23/08C08L51/06C08K13/06C08K3/34C08K3/04C08K3/22C08K3/30C08F255/02C08J3/22B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/926
Inventor 翁永华汪理文丁贤麟
Owner SUZHOU RUNJIA ENGINEER PLASTIC
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