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A preparation method of high heat-resistant polybutene-1 composite pipe material for transporting high-temperature fluid

A high-temperature fluid, polybutene technology, applied in the field of polymer materials, can solve problems such as the inability to meet the use requirements, and achieve the effects of improving the crystal transformation rate, low reaction temperature, and simple operation

Active Publication Date: 2021-11-09
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the heat resistance of PB-1, especially the heat resistance at the initial stage of molding, cannot meet the existing use requirements.

Method used

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  • A preparation method of high heat-resistant polybutene-1 composite pipe material for transporting high-temperature fluid

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Embodiment 1

[0022] Add 5 g of bacterial cellulose powder with a particle size of 20 μm into 100 ml of 30% sulfuric acid solution, and stir vigorously for 10 min. After stirring, filter with suction and wash with water until neutral. Meanwhile, 5 g of bis[4-(1,1-dimethylethylbenzoyl-oxy)]aluminum hydroxide solid powder was dissolved in 100 ml of N,N-dimethylformamide at 130°C. The above solution was added to the bacterial cellulose powder treated with sulfuric acid, and stirred and reacted at 130°C for 8 hours. After the reaction, the white powder in the system was suction-filtered, washed with water, and dried. Mix 0.5g of the above-mentioned special additives with 1000g of PB-1 in a high-speed mixer, and shape them through extrusion, granulation, injection molding and other steps. At intervals of 24 hours, the heat distortion temperature (HDT) was measured according to GB / T1633-2000. The specific data are shown in Table 1.

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Abstract

The invention relates to a method for preparing a high heat-resistant polybutene-1 composite pipe material for transporting high-temperature fluids, which belongs to the technical field of polymer materials, and specifically includes adding cellulose powder into a sulfuric acid solution, stirring vigorously for 5-10 minutes, After stirring, filter with suction and wash with water until neutral; then dissolve the solid powder of bis[4-(1,1-dimethylethylbenzoyl-oxygen)]aluminum hydroxide in the organic Add the above solution to the obtained solid, raise the temperature of the mixture to 100°C-130°C, stir and react for 4-8 hours, after the reaction, filter the white powder in the solution, wash it with water, and dry it. That is, the special additive for polybutene-1 is obtained; finally, the polybutene-1 resin and the special additive for polybutene-1 are uniformly mixed in a high-speed mixer, and are formed through extrusion, granulation, injection molding and other steps to obtain High heat-resistant polybutene-1 composite pipe material; the polybutene-1 composite pipe material prepared by the invention can form a stable crystal form and has a heat distortion temperature as high as 136°C.

Description

technical field [0001] The invention relates to a preparation method of a high-heat-resistant polybutene-1 composite pipe material used for conveying high-temperature fluid, and belongs to the technical field of polymer materials. Background technique [0002] Polybutene-1 (PB-1) has excellent impact resistance, stress crack resistance, creep resistance, heat resistance and pressure resistance, moisture barrier performance and electrical insulation performance, etc., and is widely used in pipes, films, and sheets and other fields. Compared with other types of polyolefins, PB-1 has the best resistance to environmental stress cracking. Compared with polypropylene and polyethylene, PB-1 has higher creep resistance, and when the stress is lower than the yield point, PB-1 can still maintain very good creep resistance at 110°C. In addition, it has the main technical properties of steel and aluminum, and the energy consumption per unit volume of PB-1 pipe production is 12% and 25...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/20C08L1/04C08K3/22
CPCC08K2003/2227C08L23/20C08L2201/08C08L2203/18C08L1/04C08K3/22
Inventor 王波林福华韩晓静刘焱超李静博杨彰雄
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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