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Nano halogen-free flame retardant polyolefin material and preparation method thereof

A polyolefin and nano-technology, applied in the field of nano-halogen-free flame-retardant polyolefin materials and its preparation, can solve the problems of decreased mechanical properties, large addition of flame retardants, toxicity, etc., and achieve good elasticity, high strength, and good resistance. The effect of flammability

Inactive Publication Date: 2012-08-22
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large amount of flame retardant added, the mechanical properties of the flame-retardant polyolefin material will be reduced. Chinese patent CN100365051C discloses a method for preparing a reinforced and toughened flame-retardant polyolefin material, using organic montmorillonite and Brominated flame retardants have good mechanical properties and flame retardant properties, but the halogen-containing flame retardants used are prone to produce toxic smoke

Method used

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  • Nano halogen-free flame retardant polyolefin material and preparation method thereof
  • Nano halogen-free flame retardant polyolefin material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] After vacuum drying 70 parts of polyolefin, 20 parts of ammonium polyphosphate, 9 parts of nylon 6, and 1 part of urea, add 1 part of polyolefin wax and mix in a high-speed mixer at 80 ° C for 10 minutes. , Extruded and granulated in a twin-screw extruder with temperature control in six zones. The processing temperatures in zones one to six are: 190°C, 190°C, 195°C, 195°C, 200°C, and 190°C. The pellets are pressed into tablets on a flat vulcanizing machine at 165-170°C, and cut into standard strips on a universal testing machine as required for testing combustion performance and mechanical properties.

Embodiment 2

[0022] After vacuum-drying 70 parts of polyolefin, 20 parts of ammonium polyphosphate, 9 parts of nylon 6, 1 part of urea, and 2 parts of cetyltrimethylammonium bromide-modified sodium montmorillonite, add 1 part of poly The olefin wax was mixed in a high-speed mixer at 80°C for 10 minutes, and the above mixture was extruded and granulated in a twin-screw extruder with an aspect ratio of 32 and temperature control in six zones. The processing temperatures in the first to sixth zones were as follows: : 190°C, 190°C, 195°C, 195°C, 200°C, 190°C. The pellets are pressed into tablets on a flat vulcanizing machine at 165-170°C, and cut into standard strips on a universal testing machine as required for testing combustion performance and mechanical properties.

Embodiment 3

[0024] After vacuum drying 70 parts of polyolefin, 20 parts of ammonium polyphosphate, 9 parts of nylon 6, 1 part of urea, and 2 parts of nano-A12O3, add 1 part of polyolefin wax and mix in a high-speed mixer at 80 ° C for 10 minutes. The mixture is extruded and granulated in a twin-screw extruder with an aspect ratio of 32 and temperature control in six zones. The processing temperatures in zones one to six are: 190°C, 190°C, 195°C, 195°C, 200°C, 190°C. The pellets are pressed into tablets on a flat vulcanizing machine at 165-170°C, and cut into standard strips on a universal testing machine as required for testing combustion performance and mechanical properties.

[0025] The specific data of each instance are shown in the table below:

[0026] The test data of each embodiment of table 1

[0027]

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Abstract

The invention relates to a nano halogen-free flame retardant polyolefin material and a preparation method thereof. The nano halogen-free flame retardant polyolefin material is prepared by melting and mixing 50-90 parts of polyolefin, 1-10 parts of nano particles, 10-65 parts of expansion type flame retardant and 0.5-5 parts of dispersing agent according to reasonable proportion. According to the nano halogen-free flame retardant polyolefin material and the preparation method thereof, the nano particles are added based on the expansion type halogen-free flame retardant polyolefin, the cooperation flame retardant effect is achieved, the negative influence on the mechanical property of the polyolefin caused by the heavy addition of the flame retardant can be overcome, and compared with the polyolefin material with pure expansion type flame retardant, the nano halogen-free flame retardant polyolefin material has the advantages of good flame retarding effect and excellent mechanical property. The material can be applied to fields of electric wires and cables, automobiles, sports goods and the like.

Description

【Technical field】 [0001] The invention relates to the technical field of nano-halogen-free flame-retardant polyolefin composite materials, in particular to a nano-halogen-free flame-retardant polyolefin material and a preparation method thereof. 【Background technique】 [0002] Polyolefin is a general term for all homopolymers, copolymers and mixtures thereof based on olefins. Due to its light weight, non-toxicity, low price and good processability, polyolefin is widely used in electrical appliances, chemicals, food, machinery, transportation and other industries, and has become one of the indispensable chemical products in the national economy. However, because polyolefin is a flammable material, its oxygen index is less than 18, and the amount of smoke generated by combustion is large, resulting in a large number of molten droplets, which are very easy to spread flames, so its application is greatly limited. The flame retardant modification of polyolefin is an important me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08L77/02C08K13/06C08K13/02C08K3/32C08K5/21C08K9/04C08K3/34C08K3/22C08K3/26B29C47/92B29C48/92
CPCB29C48/92
Inventor 公维光张玉娟孟圆圆郑柏存林珩易红玲魏婷
Owner EAST CHINA UNIV OF SCI & TECH
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