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Halogen-free flame-retardant polyethylene foaming plastic and preparation method

A technology of flame-retardant polyethylene and foamed plastics, which is applied in the field of halogen-free flame-retardant polyethylene foamed plastics and its preparation, and can solve problems such as toxicity, poor flame-retardant performance, and equipment corrosion damage

Inactive Publication Date: 2011-04-20
安吉鼎烽塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a halogen-free polyethylene foamed plastic and its preparation method, which overcomes the poor flame retardancy of traditional polyethylene foamed materials, and the release of a large amount of toxic and corrosive halogenated halogenated flame retardants when burned. Hydrogen gas, which will cause suffocation and poisoning of personnel and corrosion damage to equipment, etc. The product of the present invention is halogen-free and flame-retardant, which meets the requirements of fire protection and environmental protection, and has high oxygen index, good strength, high specific strength, and strong ability to absorb impact loads, etc. features

Method used

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  • Halogen-free flame-retardant polyethylene foaming plastic and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] 2.5kg of dicumyl peroxide (DCP) and 50kg of high-pressure polyethylene (LDPE) (Sinopec) were banburyed, opened and granulated to obtain masterbatch A. 17.5kg of ADC blowing agent and 35kg of high-pressure polyethylene (LDPE) were banburyed, opened and granulated to obtain masterbatch B. 9.5 kg of BDPIE type P-N halogen-free flame retardant (Germany Ciba-Geigy) and 43 kg of high-pressure polyethylene (LDPE) were banburyed, opened and pelletized to obtain masterbatch C. Nano-organic montmorillonite (MMT-DKI, Zhejiang Fenghong Clay Chemical Co., Ltd.) 12kg, KH-570 type silicone coupling agent (Guangzhou Songyuan New Material Co., Ltd.) 1kg and high-pressure polyethylene (LDPE) 39.5kg Mixing, refining, and granulation to obtain masterbatch D. Masterbatch E is ethylene-vinyl acetate copolymer (EVA resin, Weihai Jiaodong Chemical Light Industry Co., Ltd.); masterbatch F is: polyethylene color masterbatch (Shanghai Jianuo Plastic Co., Ltd.). The above-mentioned banburying te...

Embodiment 2

[0080] Masterbatch A prepared by the method of Example 1, 15kg; Masterbatch B, 55kg; Masterbatch C, 10kg; Masterbatch D, 15kg; Masterbatch E, 3kg; (XJ rubber extruder, Dalian Huahan Rubber & Plastic Machinery Co., Ltd.) extrusion, the extrusion temperature is 115 ° C, and foamed in a foaming furnace to obtain polyethylene foam plastics; the temperature of the foaming furnace is: the preheating temperature is 110°C, foaming temperature of 120°C, molding temperature of 130°C, to obtain a polyethylene foam plastic with a foaming ratio of 30 times, the performance parameters are: oxygen index: ≥28; tensile strength: transverse direction: 2.5kg / cm 2 , longitudinally 3.5kg / cm 2 ; Extensibility: 90% in the transverse direction, 80% in the longitudinal direction; Tear strength: 1.8kg / cm in the transverse direction 2 , longitudinally 1.6kg / cm 2 ; Shrinkage rate: <+1.0% in the transverse direction and <-2.0% in the longitudinal direction.

Embodiment 3

[0082] Masterbatch A prepared by the method of Example 1, 15kg; Masterbatch B, 60kg; Masterbatch C, 8kg; Masterbatch D, 12kg; Masterbatch E, 3kg; Extrusion, the extrusion temperature is 120°C, the foaming furnace is foamed, and the temperature of the foaming furnace is: the preheating temperature is 110°C, the foaming temperature is 125°C, and the molding temperature is 140°C to obtain polyethylene foam plastics, and obtain Polyethylene foamed plastic with a foaming ratio of 35 times, the performance parameters are: oxygen index: ≥ 25; tensile strength: 2.2kg / cm2 in the transverse direction 2 , longitudinally 3.3kg / cm 2 ;Extensibility: 80% in transverse direction and 70% in longitudinal direction; Tear strength: 1.6kg / cm in transverse direction 2 , longitudinally 1.4kg / cm 2 ; Shrinkage rate: <+1.0% in the transverse direction and <-2.0% in the longitudinal direction.

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Abstract

The invention discloses halogen-free flame-retardant polyethylene foaming plastic and a preparation method. The halogen-free flame-retardant polyethylene foaming plastic comprises the following components in parts by weight: 15-40 parts of dicumyl peroxide and high pressure polyethylene fusion in the mass ratio of 1:15-25, 20-60 parts of fusion of ADC (Azobisformami-de) foaming agent and high pressure polyethylene in the mass ratio of 1:1.5-3.5, 3-20 parts of fusion of BDPI type P-N halogen-free flame retardant and high pressure polyethylene fusion in the mass ratio of 1:3-5, 5-25 parts of fusion of nano organic montmorillonite, KH-570 type organosilicon coupling agent and high pressure polyethylene fusion in the mass ratio of 1:0.05-0.15:3-5; 0.5-5 parts of ethylene vinylacetate copolymer and 0.5-5 parts of polyethylene color master batch. The halogen-free flame-retardant polyethylene foaming plastic is halogen-free and flame-retardant, meets the firefighting and environmentally-friendly requirements and has the characteristics of high oxygen index, favorable strength, strong strength, strong absorbing impact loading capability and the like.

Description

(1) Technical field [0001] The invention relates to a halogen-free flame-retardant polyethylene foam plastic and a preparation method thereof. (2) Background technology [0002] Polyethylene foamed plastics have high foaming ratio, low density, thin thickness, smooth surface, high elasticity, high toughness, and easy secondary processing. In terms of processing, physical properties such as elongation, shrinkage ratio, and tensile strength are far better than Other materials such as polystyrene and polyurethane foam are a multifunctional polymer material with the characteristics of heat preservation, fire prevention, mildew resistance, water resistance, sound insulation, sound absorption, cushioning, and compliance with environmental protection standards. This type of product is called pollution-free product by advanced countries in the world. During the production process of the product, it will not cause environmental pollution. After the product is used, it is easy to recy...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L31/04C08K13/06C08K9/04C08K3/34C08K5/14C08K5/54C08K5/5399C08J9/10B29C47/92B29C44/60B29C48/92
CPCB29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 泮雪强贾建洪杨璐
Owner 安吉鼎烽塑料有限公司
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