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Ceramizable polymer material having self-supporting performance and preparation method thereof

A technology of polymer materials and ceramics, applied in the direction of organic insulators, plastic/resin/wax insulators, rubber insulators, etc., can solve the problems of material softening and deformation, high cost, fracture loss, etc., to improve self-supporting performance and bending strength , good self-supporting performance, excellent self-supporting performance

Inactive Publication Date: 2017-09-12
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high molecular polymer materials prepared by this method have the following problems: under high temperature (above 800°C) ablation conditions, the material will soften and deform, and serious dripping will occur, and the strength of the sintered body is low; as a support material, the high Molecular polymeric materials may deform or even break and lose their original functions, causing the supported objects to collapse, causing secondary disasters, or blocking passages, making escape and rescue work difficult, especially when the polymer material is used as a cantilever beam, an overhanging When used in beams, wires, cables or other similar conditions, the self-supporting ability of the sintered body of the material is required to be higher
[0003] In the prior art, the Chinese patent with the publication number CN 104497404A discloses "a kind of ceramicable polyolefin composite material and its preparation method", and the Chinese patent with the publication number CN 101404189A discloses "a rapid ceramicization fire-resistant cable material "Both of them involve the preparation of ceramic polymers. One uses ceramic powder and the other uses ceramic fillers. The prepared materials lack self-supporting properties during the ablation process. In addition, the former is prepared due to the use of coupling agents. The method is more complicated; the Chinese patent with the publication number CN 105295379A discloses "a kind of ceramizable silicone rubber composite material and its preparation method", which mainly provides a self-supporting ceramizable silicone rubber composite material in a wide temperature range. The material has a certain self-supporting performance, but the amount of the main material is relatively large, and the application range of the material prepared by a single substrate is narrow, and the cost is also high; therefore, it is necessary to develop a new material and preparation method to solve the problems existing in the prior art. The problem

Method used

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  • Ceramizable polymer material having self-supporting performance and preparation method thereof
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  • Ceramizable polymer material having self-supporting performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Raw material quality ratio:

[0033]

[0034] First, add silicate glass powder and phosphate compound into a high-speed mixer, stir at high speed for 20 minutes to form a mixed powder, and take it out for later use. Then pour the ethylene-vinyl acetate copolymer into a two-roll plastic mill, keep the temperature at 85°C and cut for 2 minutes, so that the organic polymer can wrap the front roll; then slowly add the mixed powder to be used, and mix with ethylene- The vinyl acetate copolymer was mixed for 12 minutes until the mixed powder and the base material were evenly mixed. The sheet obtained by kneading was hot-pressed on a flat vulcanizer, the temperature was set at 170°C, pressed at 10MPa for 20min, and then cold-pressed, the cold-pressing time was 5min, and the pressure was 10MPa.

[0035] The performance test results are shown in Table 1.

Embodiment 2

[0037] Raw material quality ratio:

[0038]

[0039]First, add silicate glass powder and phosphate compound into the high-speed mixer, stir at high speed for 20 minutes, and take it out for later use. Then pour the ethylene-vinyl acetate copolymer into a two-roll plastic mill, keep the temperature at 85°C and shear for 2 minutes, so that the organic polymer matrix can wrap the front roll, and then gradually add the above-mentioned mixed silicic acid for use The salt glass powder and the phosphate compound powder are mixed with the matrix, and the mixing time is 12 minutes until the powder and the matrix material are evenly mixed. The sheet obtained by kneading was hot-pressed on a flat vulcanizer, the temperature was set at 170°C, and pressed at 10 MPa for 15 minutes, and then cold-pressed, the cold-pressing time was 5 minutes, and the pressure was 10 MPa.

[0040] The performance test results are shown in Table 2.

Embodiment 3

[0042] Raw material quality ratio:

[0043]

[0044] First, add silicate glass powder and phosphate compound into the high-speed mixer, stir at high speed for 20 minutes, and take it out for later use. Then pour the ethylene-vinyl acetate copolymer into a two-roll plastic mill, keep the temperature at 85°C and shear for 2 minutes, so that the organic polymer matrix can wrap the front roll, and then gradually add the above-mentioned mixed silicic acid for use Salt glass powder and phosphate compound are mixed with the matrix for 12 minutes until the powder and the matrix material are evenly mixed. When hot-pressing the kneaded sheets on a flat vulcanizer, set the temperature at 170°C and press at 10 MPa for 15 minutes, and then perform cold pressing for 5 minutes at a pressure of 10 MPa.

[0045] The performance test results are shown in Table 3.

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Abstract

The invention discloses a ceramizable polymer material having self-supporting performance and a preparation method thereof and belongs to the technical field of processing and application of polymer materials. The ceramizable polymer material is formed by mixing, by mass, 100 parts of polymer matrix, 140-185 parts of silicate glass powder, 0-45 parts of phosphate compound and 0-2 parts of crosslinking agent, the polymer matrix is one of silicon rubber, polypropylene, polyethylene, polyvinyl acetate and ethylene-vinyl acetate copolymer, the silicate glass powder contains 5wt%-30wt% of alkaline metal element or alkaline earth metal element, the phosphate compound is one of sodium phosphate, ammonium polyphosphate and sodium triphosphate, and decomposition temperature of the phosphate compound is 300-400 DEG C. The preparation method includes: (1), mixing the phosphate glass powder with the phosphate compound; (2), mixing raw materials; (3), pressing for forming. By adopting a formulation and the preparation method, self-supporting performance of ceramizable polymer can be improved remarkably.

Description

technical field [0001] The invention relates to a ceramizable polymer material and a preparation method thereof, more specifically to a self-supporting ceramizable polymer material and a preparation method thereof, belonging to the technical field of processing and application of polymer materials. Background technique [0002] The insulation layer of wires and cables is often made of polymer materials, but as a combustible material, it is easy to cause fire accidents. Therefore, wire / cable materials are actually required, especially as special wire / cable materials for nuclear power plants and used in communications. The wires / cables are still able to transmit power and maintain the smooth flow of communication under fire conditions. In order to meet this standard, the insulation material of wires and cables is required to have a certain self-supporting performance within a wide range of ablation temperature (600-1000°C), that is, to maintain its integrity, and to have a cer...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L83/04C08K3/40C08K3/32C08K5/14H01B3/28H01B3/44
CPCH01B3/28H01B3/44C08K3/32C08K3/40C08K5/14C08K2003/323C08K2003/324C08L2203/202C08L2201/02C08L2312/00C08L23/0853C08L83/04
Inventor 王庭慰赵东贡新浩
Owner NANJING UNIV OF TECH
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