High-flame-retardant and halogen-free polyolefin cable material and preparation method thereof

A polyolefin cable material, high flame retardant technology, used in circuits, electrical components, insulators and other directions, can solve problems such as low flame retardant efficiency, human injury, environmental pollution, etc., to achieve cost-effective, good flame retardant performance, mechanical properties superior effect

Inactive Publication Date: 2014-06-25
GUANGDONG JUSHI CHEM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flame retardant efficiency of the product prepared by the first method is low. To achieve a better flame retardant effect, the amount of inorganic flame retardant added should be at least 65%. A large amount of fillers will lead to deterioration of the physical and mechanical properties, electrical properties and processing properties of the cable material. ; The product prepared by t

Method used

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

Examples

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Effect test

preparation example Construction

[0018] The present invention also shows the preparation method of the above-mentioned highly flame-retardant halogen-free polyolefin cable material, which includes the following steps:

[0019] (1) After accurately weighing each component according to the formula, mix in a high-speed mixer for 6 minutes to obtain a premix. The specific steps are as follows. First, put the granular raw materials into the high-speed mixer, and add liquid after stirring at a low speed for 30 seconds. After mixing the additives at high speed for 3 minutes, stop the machine; then add powdered raw materials and mix at high speed for 3 minutes, then stop the machine to obtain a premix;

[0020] (2) Put the above-mentioned premix into the internal mixer and knead for 15 minutes, then knead through co-rotating twin-screws, and finally go through single-screw extrusion, air-cooled and hot-cut granulation, and the extrusion temperature is set at 90-130°C between.

Embodiment 4

[0027] On the basis of Example 4 formulation and Example 1, only the flame retardant ratio is changed, and the remaining components and ratios remain unchanged. The performance test results show that: compared with sample 1, the flame retardant performance of the sample is improved through the increase of the proportion of the organic hypophosphite flame retardant, and the mechanical properties are decreased, but it can still meet various requirements for use.

Embodiment 5

[0028]Example 5 On the basis of Example 1, the addition of metallocene ethylene was reduced, the addition of aluminum hydroxide was increased, and the proportions of all other components remained unchanged. The test results show that: compared with sample 1, the flame retardant performance of the sample is improved, the smoke density is reduced, and the mechanical properties are reduced by increasing the proportion of aluminum hydroxide flame retardant, but it can still meet various requirements for use.

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Abstract

The invention discloses a high-flame-retardant and halogen-free polyolefin cable material and a preparation method thereof. The high-flame-retardant and halogen-free polyolefin cable material comprises the following components in parts by weight: 20-70 parts of ethylene copolymer, 5-30 parts of polyethylene, 10-60 parts of metal hydroxide, 3-20 parts of organic phosphate flame retardant, 3-30 parts of melamine compound, 4-10 parts of compatilizer and 2-5 of other additives. The preparation method comprises the following steps of: (1) firstly putting granular materials into a high-speed mixing machine, adding liquid additive after stirring for 30 seconds at low speed, mixing for 3 minutes at high speed, then stopping, adding the granular materials, mixing for 3 minutes at high speed, then stopping and obtaining premixed materials; and (2) adding the premixed materials into a mixer for mixing for 15 minutes, then mixing by double screws with same directions, finally extruding by single screw, carrying out air cooling, hot cutting and granulation, wherein the extruding temperature is set between 90-130 DEG C.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant cable material, in particular to a highly flame-resistant halogen-free polyolefin cable material and a preparation method thereof. Background technique [0002] With the rapid development of the economy, wires and cables are widely used in various industries. With the frequent occurrence of electrical fire accidents, the flame retardant problem of wires and cables has attracted the attention of countries all over the world. Traditional flame-retardant cable materials mainly use PVC and polyolefin with halogen-antimony flame retardants added. When the cable burns, it releases a lot of smoke and toxic gases, which hinders people's safe evacuation and fire fighting work in a fire, and damages life and property. to serious losses. [0003] In recent years, the European Union has successively introduced RoHS Directive, WEEE Directive, REACH Directive and EuP Directive and other related directives. The...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L51/06C08K13/02C08K3/22C08K5/5313C08K5/3492B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/92704C08L23/0853C08L23/0869C08L2201/02C08L2201/22C08L2203/202C08L2205/03C08L2205/035H01B3/441C08L23/06C08L51/06C08K13/02C08K2003/2227C08K5/5313C08K5/34928B29B7/183B29B7/40B29B7/46B29B7/72B29B7/7461B29B9/12B29C48/04B29C48/39B29C48/397B29C48/405B29C48/911B29C2948/92561B29C2948/92828B29C2948/92904C08K3/20C08K5/0066C09K21/12
Inventor 梁发雄张翼翔蕫启殿莫伟利
Owner GUANGDONG JUSHI CHEM CO LTD
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