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Polypropylene graft microcellular foaming material and preparation method thereof

A microcellular foamed material and polypropylene technology, which is applied in the field of polypropylene polar graft microcellular foamed material and its preparation, can solve the problem of reducing melt fluidity, increasing the density of foamed materials, and difficulty in foaming, etc. problem, to expand the scope of application and solve the effect of dust flying

Inactive Publication Date: 2015-03-18
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When partial cross-linking of PP is used to improve the melt strength of PP, if the cross-linking density is too large, the fluidity of the melt will be reduced, which is not good for injection molding processing; increase

Method used

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  • Polypropylene graft microcellular foaming material and preparation method thereof
  • Polypropylene graft microcellular foaming material and preparation method thereof
  • Polypropylene graft microcellular foaming material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) 5 parts of foaming agent azodicarbonamide (AC), 10 parts of nucleating agent talcum powder, 15 parts of thermoplastic elastomer polyolefin elastomer (POE) and 20 parts of low-density polymer were mixed by twin-screw extruder. Ethylene extrusion, granulation, prepared into foam masterbatch, extrusion temperature is 135 ~ 155 ℃;

[0031] (2) Using a twin-screw extruder, extrude 2 parts of foaming aid calcium stearate and 1000 parts of polypropylene grafted maleic anhydride grafted polypropylene (PP-g-MAH), granulate, and extrude The temperature is 195~215℃;

[0032] (3) Combine the foam masterbatch in (1), the pellets in (2) and 1 part of antioxidant tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] The pentaerythritol ester (antioxidant 1010) was mixed evenly, and injected by an injection molding machine with an injection temperature of 160-180 ° C to prepare a polypropylene polar graft microporous foam material. The average pore size of the foam materia...

Embodiment 2

[0034] (1) 8 parts of foaming agent azodicarbonamide (AC), 16 parts of nucleating agent talc, 24 parts of thermoplastic elastomer polyolefin elastomer (POE) and 32 parts of low density polystyrene were mixed by twin-screw extruder. Ethylene extrusion, granulation, prepared into foam masterbatch, extrusion temperature is 135 ~ 155 ℃;

[0035] (2) Using a twin-screw extruder, extrude 4 parts of foaming aid calcium stearate and 1000 parts of polypropylene grafted maleic anhydride grafted polypropylene (PP-g-MAH), granulate, and extrude The temperature is 195~215℃;

[0036] (3) Combine the foam masterbatch in (1), the pellets in (2) and 2 parts of antioxidant tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] Pentaerythritol ester (antioxidant 1010) was mixed evenly, and injected by an injection molding machine with an injection temperature of 160-180°C to prepare a polypropylene polar graft microporous foam material, with an average pore size of 68 μm. The performanc...

Embodiment 3

[0038] (1) 12.5 parts of foaming agent azodicarbonamide (AC), 25 parts of nucleating agent talc, 37.5 parts of thermoplastic elastomer polyolefin elastomer (POE) and 50 parts of low-density polymer were mixed by twin-screw extruder. Ethylene extrusion, granulation, prepared into foam masterbatch, extrusion temperature is 135 ~ 155 ℃;

[0039] (2) Using a twin-screw extruder, extrude 6 parts of foaming aid calcium stearate and 1000 parts of polypropylene grafted maleic anhydride grafted polypropylene (PP-g-MAH), granulate, and extrude The temperature is 195~215℃;

[0040] (3) Combine the foam masterbatch in (1), the pellets in (2) and 3 parts of antioxidant tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] The pentaerythritol ester (antioxidant 1010) is mixed evenly, and injected by an injection molding machine with an injection temperature of 160-180°C to prepare a polypropylene polar graft microporous foam material, and the average pore size of the foam material ...

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Abstract

The invention belongs to the technical field of polymer materials, and relates to a polypropylene graft microcellular foaming material and a preparation method thereof. The foaming material comprises the following components by weight: 1000 parts of a polypropylene polar graft, 5-20 parts of a foaming agent, 2-10 parts of a foaming assistant agent, 10-35 parts of a nucleating agent, 20-70 parts of low density polyethylene, 15-50 parts of a thermoplastic elastomer and 1-5 parts of an antioxidant. The polypropylene graft microcellular foaming material using the polypropylene (PP) polar graft for foaming, the PP foaming material can not only meet the requirement of polar materials, but also can satisfy the requirements of non polarity materials, and the scope of application of the PP foaming material is expanded. In addition, by preparation of the foaming agent into foaming agent masterbatch, the problem of dispersion of the foaming agent can be solved, and the problems of dust explosion, metering error and the like can be solved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a polypropylene polar graft microporous foam material and a preparation method thereof. Background technique [0002] Polypropylene (PP) has the characteristics of heat resistance, chemical stability and environmental protection, and is widely used in various fields. Some developed countries are also vigorously developing PP foam materials. Foamed PP has become a new type of foam material with more application value and market potential after polystyrene, polyurethane, and polyethylene foam materials. However, since PP is a partially crystalline linear polymer, its melt strength and melt tensile properties are very low, the cell walls are easy to break and merge during foaming, and the cells are easy to collapse after foaming, making it difficult to prepare uniform cells. PP foam material with high density, fineness and high expansion ratio. Therefore, improving the mel...

Claims

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Application Information

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IPC IPC(8): C08L51/06C08L23/06C08L23/16C08L23/08C08J9/10C08J3/22B29B9/06B29C47/92B29C45/78B29C48/92
Inventor 杨桂生刘明昌
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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