Preparation method and applications of polyethylene foaming calcic-plastic composite material

A polyethylene foaming and composite material technology, applied in the field of polymer modification, can solve the problems of yield strength, tear strength, elongation at break, low environmental stress cracking resistance, limitations on the use of polyethylene foaming materials, strength and Toughness and resilience defects, etc., to achieve the effects of light weight, high strength, excellent environmental stress crack resistance, and reduced production costs

Active Publication Date: 2013-05-29
滁州格美特科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The usual low-density polyethylene has low melting point, low yield strength, tear strength, elongation at break and environmental stress cracking resistance, etc., so that the use of polyethylene foam materials is limited.
The Chinese invention patent with the publication number CN1500828A discloses a polyethylene wood-plastic sheet, which uses high-density polyethylene as the matrix resin. The obtained plastic wood sheet has high strength, heat insulation, excellent environmental stress cracking resistance, and corrosion resistance. However, the toughness and resilience are limited, and high-density polyethylene is not as widely sourced as low-density polyethylene
The invention patent with the publication number CN 1370797A discloses a method for preparing low-density polyethylene foam plastics by irradiation crosslinking technology. The resulting foam plastics are soft, heat-insulating, chemical-resistant, and low-temperature resistant. There are defects in toughness and resilience

Method used

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  • Preparation method and applications of polyethylene foaming calcic-plastic composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) 100 parts of low-density polyethylene resin, 16 parts of linear low-density polyethylene, 80 parts of light calcium carbonate, 12 parts of azodicarbonamide (AC), 1.0 parts of phthaloyl peroxide, Accelerator (1.1 parts of zinc oxide and 1.5 parts of lead stearate), 48 parts of EPDM rubber and composite flame retardant (8 parts of boron trioxide and 3.5 parts of chlorinated paraffin) were added to the kneader in turn, and kneaded for 3~ 5min, kneader speed at 680r / min;

[0034] (2) Adopt the combination method of two-roll plasticizing-two-roll plastic refining, the first two-roll plastic refining is rough refining, fully plasticized, the temperature of the front roller is 138°C, the temperature of the rear roller is 125°C, and the refining time is 10 ~15 minutes, continuous refining to ensure uniform plasticization; the second two-roller plastic refining is refining, the temperature of the front roller is controlled at 124°C, and the temperature of the rear roller is ...

Embodiment 2

[0039] (1) According to the proportion of ingredients, 100 parts of low-density polyethylene resin, 12 parts of linear low-density polyethylene, 96 parts of calcium sulfite, 8 parts of azodicarbonamide (AC), and 0.8 parts of dicumyl peroxide (DCP) parts, accelerator (1.2 parts of zinc oxide and 1.1 parts of stearic acid), 40 parts of ethylene / vinyl acetate copolymer (EVA) and composite flame retardant (7.5 parts of antimony trioxide and 4.2 parts of chlorinated paraffin) were added sequentially Kneading machine, kneading for 3 to 5 minutes, the speed of the kneading machine is 720r / min;

[0040] (2) Adopt the combined method of two-roll plasticizing-two-roll plastic refining, the first two-roll plastic refining is rough refining, fully plasticized, the temperature of the front roll is 135 °C, the temperature of the rear roll is 120 °C, and the plastic refining time is 10 ~15 minutes, continuous refining to ensure uniform plasticization; the second two-roller plastic refining i...

Embodiment 3

[0045] (1) According to the proportion of ingredients, 100 parts of low-density polyethylene resin, 22 parts of linear low-density polyethylene, 88 parts of calcium sulfite, 40 parts of gypsum, 5 parts of potassium azoformamide formate (AP), 5 parts of diisopropyl peroxide 0.9 parts of benzene (DCP), accelerator (1.5 parts of zinc oxide and 2.2 parts of lead stearate), 45 parts of EPDM rubber and composite flame retardant (6.0 parts of antimony trioxide and 3.0 parts of decabromodiphenyl ether parts) into the kneader in turn, kneading for 3 to 5 minutes, and the kneader speed is 560r / min;

[0046](2) Adopt the combined method of two-roll plasticizing and two-roll plastic refining. The first two-roll plastic refining is rough refining and fully plasticized. The temperature of the front roller is 142 ° C, the temperature of the rear roll is 128 ° C, and the plastic refining time is 10 ~15 minutes, continuous refining to ensure uniform plasticization; the second two-roller plasti...

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Abstract

The invention belongs to the technical fields of polymer modification and processing, and relates to a preparation method and applications of a polyethylene foaming calcic-plastic composite material. The polyethylene foaming calcic-plastic composite material is prepared from the following components in parts by weight: 100 parts of low-density polyethylene resin, 10-30 parts of linear low-density polyethylene resin, 80-130 parts of calcic-plastic stuffing, 5-20 parts of foaming agent, 0.8-11 parts of cross-linking agent, 2-4.5 parts of accelerant, 40-60 parts of elastic toughening material and 9-15 parts of composite fire retardant. The polyethylene foaming calcic-plastic composite material has the advantages of light weight, high strength, goog heat insulation property, environmental stress resistance, good impact resilience, fire retardant property, corrosion resistance and the like, and can be used for manufacturing ceilings, vehicle door sheets, float products, decorative plates of acid-alkali corrosion resistant material producing workshops in chemical enterprises, and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer modification and processing, and relates to a polyethylene foamed calcium-plastic composite material and a preparation method and application thereof. Background technique [0002] Polyethylene foamed plastic is a new type of material developed in the 1970s and has many unique properties. It is soft, tough, abrasion-resistant, thermally insulating, chemically resistant, and especially low-temperature resistant. It is suitable for structural materials such as floating materials, thermal insulation materials, vehicles and building boards. Due to the low melting point and low yield strength, tear strength, elongation at break and environmental stress cracking resistance of ordinary low-density polyethylene, the use of polyethylene foam materials is limited. The Chinese invention patent with the publication number CN1500828A discloses a polyethylene wood-plastic sheet, which uses high-density polyet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/16C08L91/06C08K13/02C08K3/26C08K3/30C08K3/22C08K5/098C08K3/38C08J9/04
Inventor 郭学林
Owner 滁州格美特科技有限公司
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