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Environment-friendly type micro-foaming polypropylene sheet and preparation thereof

A polypropylene sheet and micro-foaming technology, applied in flat products, other household appliances, applications, etc., can solve the problems of high safety protection and fire protection configuration, low surface flatness, high cell opening rate, etc., and achieve strong competition Power, high production efficiency, and simple manufacturing process

Active Publication Date: 2009-01-28
丹阳市华东工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned existing disclosed foamed polypropylene materials or plates and production methods, supercritical gas is used as the foaming agent, which has very strict requirements on equipment and processes, and requires special pressure vessels and pressure-resistant and leak-proof pipelines. Higher safety protection and fire protection configuration; at the same time, this kind of expanded polypropylene material or sheet has problems such as excessive expansion ratio, high cell opening rate, low surface flatness, insufficient rigidity, low mechanical strength, secondary heat Disadvantages and problems such as easy to break during plastic processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Raw material ratio: disproportionated polypropylene 50%, random copolymerized polypropylene 28%, high-density polyethylene 8%, superfine calcium carbonate 5%, glass fiber 6%, carboxyl compatibilizer 2.5%, citric acid foaming agent 0.5%. Wherein the disproportionated polypropylene is a chemically modified polypropylene (FNT series polypropylene resin produced by Fuente New Polymer Material Co., Ltd., Qinhuangdao City) with a melt index of 0.5g / 10min; the melt index of the random copolymerized polypropylene is 3.0g / 10min 10min; the melt index of high-density polyethylene is 2.0g / 10min; the fineness of ultrafine calcium carbonate is 2500 mesh; the glass fiber is 1mm short glass fiber produced by Jushi Company; the carboxyl compatibilizer is EAA low in AA content of 16%. polymer; citric acid-based foaming agent is citric acid and baking soda NaHCO 3 The equivalent mixture, fineness through 1250 mesh.

[0027] Preparation:

[0028] (A) Foaming material premixing: Dispropo...

Embodiment 2

[0031] Raw material ratio: disproportionated polypropylene 41%, random copolymerized polypropylene 40%, high-density polyethylene 5%, superfine calcium carbonate 5%, glass fiber 6%, carboxyl compatibilizer 2.5%, citric acid foaming agent 0.5%. Wherein the disproportionated polypropylene is a chemically modified polypropylene (FNT series polypropylene resin produced by Fuente New Polymer Material Co., Ltd., Qinhuangdao City) with a melt index of 0.5g / 10min; the melt index of the random copolymerized polypropylene is 3.0g / 10min 10min; the melt index of high-density polyethylene is 2.0g / 10min; the fineness of superfine calcium carbonate is 2500 mesh; the glass fiber is 1mm short glass fiber from Jushi Company; the carboxyl compatibilizer is EAA oligomerization with 16% AA content substance; citric acid foaming agent is citric acid and baking soda NaHCO 3 The equivalent mixture, fineness through 1250 mesh.

[0032] Preparation:

[0033] (A) Foaming material premixing: Dispropor...

Embodiment 3

[0036] Raw material ratio: disproportionated polypropylene 57%, random copolymerized polypropylene 16%, high-density polyethylene 10%, superfine calcium carbonate 5%, glass fiber 9%, carboxyl compatibilizer 2.5%, citric acid foaming agent 0.5%. Wherein the disproportionated polypropylene is a chemically modified polypropylene (self-made) with a melt index of 1.0g / 10min; the melt index of random copolymerized polypropylene is 0.5g / 10min; the melt index of high-density polyethylene is 1.0g / 10min; The fineness of fine calcium carbonate is 2500 mesh; the glass fiber is 1mm short glass fiber of Jushi Company; the carboxyl compatibilizer is EAA oligomer with 16% AA content; the citric acid foaming agent is citric acid and baking soda NaHCO 3 The equivalent mixture, fineness through 1250 mesh.

[0037] Preparation:

[0038] (A) Foaming material premixing: Disproportionated polypropylene, random copolymerized polypropylene, high-density polyethylene, ultrafine calcium carbonate, gla...

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Abstract

The invention discloses an environment-protecting micro-foaming polypropylene sheet and a preparation method thereof, belonging to the field of polymer materials. The environment-protecting micro-foaming polypropylene sheet is made of materials with the following weight percentage: 30 to 70 percent of disproportionate polypropylene, 10 to 40 percent of random copolymerized polypropylene, 5 to 10 percent of high density polyethylene, 5 to 10 percent of superfine nucleating agent, 0 to 9 percent of inorganic filler, 1 to 3 percent of carboxy compatilizer, 0.5 to 2.0 percent of citric acid foaming agent. The sheet has the advantages of light weight, environment protecting, temperature than higher120 DEG C resistance, odor eliminating in long time use and press molding suitability. The sheet can be widely used in automobile interior ornament material fields such as ceiling, trunks, planks, carpets and thermal insulation boards; the non-woven fabric composite layer mainly exerts the function of decoration.

Description

technical field [0001] The invention relates to a foamed polypropylene board and a preparation method thereof, more specifically relates to an environment-friendly micro-foamed polypropylene board and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] Expanded polypropylene is a foam plastic with advanced comprehensive properties. It has the advantages of excellent toughness and high heat resistance. It can be widely used in automotive heat insulation materials and cushioning and energy-absorbing parts. In developed countries such as Japan, Europe and the United States, the application of foamed polypropylene materials or panels in automobiles continues to expand and deepen. , Trunk and helmet and other parts, has become a multi-purpose automotive material. At present, the foaming methods of polypropylene mainly include extrusion foaming and molded foaming. The extrusion foaming method refers to: the resin melt containin...

Claims

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Application Information

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IPC IPC(8): C08L23/26C08K3/26C08K3/22C08K7/14C08K9/06C08J9/08B29B7/00B29C47/06C08L23/14C08L23/06C08L23/08B29K23/00B29L7/00
Inventor 刘永忠朱华平陆川军朱金平
Owner 丹阳市华东工程塑料有限公司
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