Aerogel polyvinyl chloride material and preparation method thereof

An aerogel polyvinyl chloride and polyvinyl chloride resin technology, applied in the field of materials, can solve the problems of poor cold resistance and impact resistance, PVC pipe decomposition, and PVC pipe becoming brittle, etc. The effect of thermal insulation

Active Publication Date: 2017-05-10
SHENZHEN AEROGEL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its poor cold resistance and low temperature impact resistance, the lower limit of the use temperature of hard PVC is generally -15°C. At low temperatures, PVC pipes will become brittle and not resistant to shocks. When the temperature is higher than 200°C, PVC pipes will decompose.

Method used

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Examples

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Effect test

preparation example Construction

[0020] The present invention provides an airgel foam material and its preparation method and application. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below.

[0021] Airgel is a very porous material with the highest porosity of any known solid. The airgel powder of the present invention is representative silica airgel, and the airgel powder has a porous structure, and the inner space of the airgel powder is mostly empty, so that the airgel powder exhibits Attractive properties such as super heat insulation, light weight, sound absorption, low dielectric constant, and the like. The biggest advantage of airgel powder is super heat insulation. Compared with traditional foam materials and their analogs, airgel shows a lower thermal conductivity of less than 0.030W / m·K. According to reports, the thermal conductivity of silica airgel is smaller than that of produc...

Embodiment 1

[0024] A kind of preparation method of airgel polyvinyl chloride material:

[0025] 1) 80 parts of polyvinyl chloride resin, 3 parts of airgel powder, 20 parts of calcium carbonate, 0.5 parts of polyethylene wax, 5 parts of ethylene-propylene rubber, 0.5 parts of paraffin wax, 0.4 parts of stearic acid and 4 parts of calcium-zinc composite stabilizer Parts are added to the heat mixer, premixed and dried at 150°C;

[0026] 2) Cool the dried material to 40°C and send it into an extruder for extrusion molding.

[0027] The thermal conductivity of the airgel polyvinyl chloride material prepared in Example 1 is 0.130 W / m·K, the critical softening temperature is 90°C, and it becomes brittle at -20°C.

Embodiment 2

[0029] A kind of preparation method of airgel polyvinyl chloride material:

[0030] 1) Mix 90 parts of polyvinyl chloride resin, 5 parts of airgel powder, 30 parts of calcium carbonate, 1 part of polyethylene wax, 8 parts of ethylene-propylene rubber, 1 part of paraffin wax, 1 part of stearic acid and 5 parts of calcium-zinc composite stabilizer Parts are added to the heat mixer, pre-mixed and dried at a temperature of 170°C;

[0031] 2) Cool the dried material to 45°C and send it into an extruder for extrusion molding.

[0032] The thermal conductivity of the airgel polyvinyl chloride material prepared in Example 2 is 0.120 W / m·K, the critical softening temperature is 95°C, and it becomes brittle at -25°C.

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Abstract

The invention discloses an aerogel polyvinyl chloride material. The aerogel polyvinyl chloride material is prepared from the following raw materials in parts by weight: 80 to 100 parts of polyvinyl chloride resin, 3 to 8 parts of aerogel powder, 20 to 40 parts of calcium carbonate, 0.5 to 2 parts of polyvinyl chloride wax, 5 to 10 parts of ethylene propylene rubber, 0.5 to 1.5 parts of paraffin, 0.4 to 1.5 parts of stearic acid and 4 to 6 parts of a calcium-zinc compound stabilizer. The preparation method of the material comprises the following steps of 1) adding the raw materials into a heating mixer, and carrying out premixing and drying at the temperature of 150 to 180 DEG C; and 2) cooling the dried materials to 40 to 50 DEG C, and then feeding the materials into an extruding machine for extrusion molding. The aerogel polyvinyl chloride material provided by the invention is high in heat insulation property, besides, the cold resistance and the heat resistance are improved, and the preparation process is simple and easy in operation.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to an airgel polyvinyl chloride material and a preparation method thereof. Background technique [0002] Among polyvinyl chloride (PVC), rigid polyvinyl chloride has high mechanical strength and good corrosion resistance. It can be used to make waste gas sewage and detoxification towers, gas and liquid conveying pipes in chemical, textile and other industries, and can also replace other corrosion-resistant materials to manufacture storage tanks, centrifugal pumps, fans and joints. PVC plastic is one of the five general-purpose synthetic plastics and the second largest plastic species in the world after polyethylene. It is widely used in various fields such as industry, agriculture, construction, transportation, power telecommunications, and packaging. Due to its poor cold resistance and low-temperature impact resistance, the lower limit of the use temperature of hard PVC is gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/06C08L23/16C08L91/06C08K13/04C08K7/26C08K3/26C08K5/09C08K5/098
CPCC08L27/06C08L2201/08C08L2205/02C08L2205/035C08L23/06C08L23/16C08L91/06C08K13/04C08K7/26C08K2003/265C08K5/09C08K5/098
Inventor 王天赋彭战军张阳辅龙
Owner SHENZHEN AEROGEL TECH CO LTD
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