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Low-density flame-retardant polypropylene foam material and preparation method thereof

A technology of flame-retardant polypropylene and foaming materials, applied in the field of low-density flame-retardant polypropylene foaming materials and their preparation, can solve the problems of unbalanced foaming effect and flame-retardant performance, and achieve environmental protection and pollution-free foaming costs. , low VOC content, uniform apparent quality effect

Pending Publication Date: 2022-02-25
NANJING JULONG SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a low-density flame-retardant polypropylene foam material and a preparation method thereof. By improving the formula of the flame-retardant polypropylene material and adopting supercritical fluid technology for foaming, a low foaming rate with uniform cells can be obtained. Density flame-retardant polypropylene material, which fully solves the technical problem that the foaming effect and flame-retardant performance cannot be balanced when the wide application of polypropylene foam material requires higher and higher performance.

Method used

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  • Low-density flame-retardant polypropylene foam material and preparation method thereof
  • Low-density flame-retardant polypropylene foam material and preparation method thereof
  • Low-density flame-retardant polypropylene foam material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0044] A preparation method of a low-density flame-retardant polypropylene foam material, comprising the following steps:

[0045] (1) Take the following components by weight: 73 parts of polypropylene, 20 parts of flame retardant, 3 parts of iron oxide, 3 parts of tribasic sulfate, 0.3 part of polyethylene wax, 0.3 part of stearic acid, toughening 6 parts of antioxidant, 0.2 parts of antioxidant 1010 and antioxidant 168, the above components were blended in a low-speed mixer for 20 minutes, added to the twin-screw extruder, and the temperature of the extruder 1 to 12 was set to 150°C, 180°C, 200°C, 200°C, 200°C, 200°C, 205°C, 205°C, 205°C, 205°C, 210°C, 210°C, the head is 200°C, the mixed material is melted, plasticized and kneaded Mixing, extruding, cooling, pelletizing, and drying to obtain a flame-retardant polypropylene material.

[0046] (2) Put the flame-retardant polypropylene material into the autoclave, and use supercritical fluid technology for foaming. The specifi...

Embodiment 2

[0047] In Example 2 and Example 3, under the premise that the foaming process parameters remain unchanged, the product formula for preparing flame-retardant polypropylene materials is adjusted, and low-density flame-retardant polypropylene foam materials are prepared respectively.

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Abstract

The invention provides a low-density flame-retardant polypropylene foam material and a preparation method thereof, and relates to the technical field of polymer foam materials. The foaming material is obtained by performing supercritical fluid foaming on a flame-retardant polypropylene material. The flame-retardant polypropylene material comprises the following components in parts by weight: 50-70 parts of polypropylene, 15-35 parts of a flame retardant, 1-6 parts of a smoke suppressant, 0.5-1 part of a lubricant, 5-10 parts of a toughening agent, and 0.3-1 part of an antioxidant. According to the low-density flame-retardant polypropylene foam material obtained by foaming through a supercritical fluid technology, the flame retardant property can reach UL941.6 mm V0 level, the advantages of high foaming ratio, excellent mechanical property, high cell density, fine apparent mass, smoothness and the like can be ensured, and the problem that in the prior art, a high-foaming-ratio flame-retardant polypropylene foam material is difficult to prepare is fully solved.

Description

technical field [0001] The invention relates to the technical field of polymer foaming materials, in particular to a low-density flame-retardant polypropylene foaming material and a preparation method thereof. Background technique [0002] Polypropylene material is currently one of the most widely used general-purpose plastics in the world. However, with the increasing demand for polypropylene, and with the international advocacy of energy conservation and the development of technology, lightweight materials have gradually entered the market in recent years. The public's vision, and the microcellular foamed material is the product of the development of lightweight. The microcellular foamed material is not only lightweight but also has excellent performance, showing good dimensional stability, processing performance, mechanical properties and thermal properties. . At present, it is widely used in aviation industry, agriculture, automobile industry, electronic appliances, pac...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08K3/32C08K3/22C08K3/30C08J9/12
CPCC08J9/122C08J9/0066C08J9/0061C08J2203/06C08J2203/08C08J2323/12C08J2423/08Y02P20/54
Inventor 王明周小梅陆体超刘曙阳王琪
Owner NANJING JULONG SCI&TECH CO LTD
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