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Foamable polypropylene material

A technology of foaming polyethylene and polyethylene, applied in the field of polymer materials, to achieve the effects of high foaming degree, excellent cushioning and shock absorption function, and high foam hardness

Inactive Publication Date: 2017-02-08
ZHEJIANG ROTOUN PLASTIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The foamed polyethylene is physical foaming, which uses polyethylene, peroxide, talcum powder, calcium carbonate and butane physical foaming agent to release foaming through the head pressure of the extruder to form a foamed product. Not suitable for mold foam molding of various products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of expandable polyethylene material, components by weight are as follows:

[0027] Polyethylene (Yangzi Petrochemical, grade HDPE 5000s, melt index 20g / 10min) 100 parts, unsaturated polymer (MBS resin, commercially available, LG-EM500, melt index 17.5g / 10min) 2 parts, free radical initiator (BIBP , commercially available) 0.5 parts, foaming agent (azodicarbonamide, commercially available) 10 parts, lubricant (PE wax) 0.5 parts, inorganic filler (calcium carbonate) 20 parts, antioxidant (4,4'- Thiobis(6-tert-butyl-3-methylphenol), commercially available) 0.1 parts.

[0028] The preparation method is as follows: add each component into the internal mixer according to the proportion and knead, the kneading temperature is controlled at 130-150°C, the kneading time is controlled at 5-6min, and the kneaded material is extruded through a single-screw extruder Pelletizing to obtain a foamable polyethylene material, the processing temperature range of the single-screw ex...

Embodiment 2

[0031] A kind of expandable polyethylene material, components by weight are as follows:

[0032] Polyethylene (Yangzi Petrochemical, grade HDPE 5000s, melt index 20g / 10min) 100 parts, unsaturated polymer (MBS resin, commercially available, LG-EM500, melt index 17.5g / 10min) 10 parts, free radical initiator (1 4 parts of AIBN+3 parts of DCP, commercially available) 4 parts, foaming agent (0.5 part of azodicarbonamide + 0.5 part of ammonium bicarbonate, commercially available) 1 part, lubricant (zinc stearate) 5 parts, inorganic filler (Talc powder) 5 parts, antioxidant (antioxidant 1010, commercially available) 0.5 part.

[0033] The preparation method is as follows: add each component into the internal mixer according to the proportion and knead, the kneading temperature is controlled at 130-150°C, the kneading time is controlled at 5-6min, and the kneaded material is extruded through a single-screw extruder Pelletizing to obtain a foamable polyethylene material, the processin...

Embodiment 3

[0036] A kind of expandable polyethylene material, components by weight are as follows:

[0037] Polyethylene (Yangzi Petrochemical, grade HDPE 5000s, melt index 20g / 10min) 100 parts, unsaturated polymer (ABS resin, commercially available, Chimei 758, melt index 3.0g / 10min) 5 parts, free radical initiator (BPO, Commercially available) 5 parts, foaming agent (N,N-dinitrosopentamethylenetetramine, commercially available) 1-10 parts, lubricant (PE wax, stearic acid, zinc stearate) 2 parts , 10 parts of inorganic filler (5 parts of calcium carbonate + 5 parts of kaolin clay), 0.1 part of antioxidant (antioxidant 1010, commercially available).

[0038] The preparation method is as follows: add each component into the internal mixer according to the proportion and knead, the kneading temperature is controlled at 130-150°C, the kneading time is controlled at 5-6min, and the kneaded material is extruded through a single-screw extruder Pelletizing to obtain a foamable polyethylene mat...

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Abstract

The invention discloses a foamable polypropylene material. The foamable polypropylene material comprises, by weight, 100 parts of polyethylene, 2 to 10 parts of unsaturated polymer, 0.5 to 5 parts of a radical initiator, 1 to 10 parts of a foaming agent, 0.5 to 5 parts of a lubricant, 5 to 20 parts of an inorganic filling material and 0.1 to 0.5 part of an antioxidant. The foamable polypropylene material can foam and be molded under the action of heat in a pressure-less mold and is thus applicable to preparation of foaming space of products of various shapes.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a foamable polyethylene material. Background technique [0002] Polyethylene (PE for short) is a thermoplastic resin obtained by polymerizing ethylene. In industry, it also includes copolymers of ethylene and a small amount of α-olefins. Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (the lowest operating temperature can reach -100~-70°C), good chemical stability, and can withstand most acid and alkali erosion (not resistant to oxidation) nature of the acid). Insoluble in common solvents at room temperature, low water absorption, excellent electrical insulation. [0003] At present, the main bulk foam materials on the market are polyurethane foam, physical foam polyethylene, polystyrene and polypropylene. Chinese invention patent CN102924777A provides a high-pressure polyethylene foam material and its continuous foaming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L51/04C08L55/02C08K13/02C08K3/26C08K5/375C08K5/098C08K3/34C08K5/134C08K5/09C08J9/10C08J9/08
CPCC08L23/06C08J9/08C08J9/103C08J9/105C08J9/107C08J2203/02C08J2203/04C08J2203/18C08J2323/06C08J2451/04C08J2455/02C08L2203/14C08L2205/025C08L2205/03C08L2205/035C08L51/04C08K2003/265C08K5/375C08K5/098C08K3/34C08K5/1345C08L55/02C08K13/02C08K5/09C08K3/346
Inventor 汪根林温原
Owner ZHEJIANG ROTOUN PLASTIC TECH
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