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Polyurethane plastic foaming agent with electrostatic shielding function

An electrostatic shielding and polyurethane technology, applied in the field of preparation of polyurethane plastic foaming agent, can solve the problems of difficult control of cell size of foamed products, difficult control of reaction process, narrow application range, etc., and achieves good comprehensive use performance and easy operation. , a wide range of effects

Inactive Publication Date: 2017-11-24
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing polyurethane foaming agent process is relatively complicated, and the reaction process is difficult to control, which makes it difficult to control the cell size of the foamed product obtained, and the application range is narrow

Method used

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  • Polyurethane plastic foaming agent with electrostatic shielding function
  • Polyurethane plastic foaming agent with electrostatic shielding function

Examples

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Effect test

Embodiment 1

[0034] A kind of foaming agent for polyurethane plastics with electrostatic shielding function, the specific process of preparing foaming agent is as follows:

[0035]Heat 10kg of metallic nickel until it melts, add 0.2kg of silicon carbide, then pass a mixed gas of nitrogen and argon into the molten metallic nickel liquid, and keep stirring until the molten liquid is cooled to obtain foam metal; the obtained foam The metal is placed in absolute ethanol, washed by ultrasonic waves to remove organic matter, then washed three times with distilled water, and dried at room temperature. Then place it in a muffle furnace, heat it to 600°C in an air atmosphere, keep it warm for 17 minutes, pre-oxidize it and grind it to the nanometer level; then dissolve 20kg of micronized sodium bicarbonate in deionized water with a concentration of 70g / L solution, put the nano-scale metal foam in the solution, heat it to 35°C under high-speed stirring at 600r / min, to evaporate the water, and the s...

Embodiment 2

[0040] A kind of foaming agent for polyurethane plastics with electrostatic shielding function, the specific process of preparing foaming agent is as follows:

[0041] Heat 10kg of metal iron until it melts, add 0.3kg of alumina, then pass a mixed gas of nitrogen and argon into the molten metal iron liquid, and keep stirring until the molten liquid is cooled to obtain foam metal; The metal is placed in absolute ethanol, washed by ultrasonic waves to remove organic matter, then washed three times with distilled water, and dried at room temperature. Then place it in a muffle furnace, heat it to 600°C in an air atmosphere, keep it warm for 20 minutes, pre-oxidize it and grind it to the nanometer level; then dissolve 25kg of micronized sodium bicarbonate in deionized water with a concentration of 70g / L solution, put the nano-scale metal foam in the solution, heat it at a low temperature to 40°C under high-speed stirring at 700r / min to evaporate the water, and the sodium bicarbona...

Embodiment 3

[0046] A kind of foaming agent for polyurethane plastics with electrostatic shielding function, the specific process of preparing foaming agent is as follows:

[0047] Heat 10kg of metallic nickel to melt, add 0.2kg of magnesia, then pass a mixed gas of nitrogen and argon into the molten metallic nickel liquid, and keep stirring until the molten liquid is cooled to obtain foam metal; the obtained foam The metal is placed in absolute ethanol, washed by ultrasonic waves to remove organic matter, then washed three times with distilled water, and dried at room temperature. Then put it in a muffle furnace, heat it to 580°C in an air atmosphere, keep it warm for 12 minutes, pre-oxidize it and grind it to the nanometer level; then dissolve 30kg of micronized sodium bicarbonate in deionized water, and the concentration is 72g / L solution, put the nano-scale metal foam in the solution, heat it to 38°C under high-speed stirring at 680r / min to evaporate the water, and the sodium bicarbon...

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Abstract

The invention belongs to the field of preparation of polyurethane plastic foaming agents and provides a polyurethane plastic foaming agent with an electrostatic shielding function. The polyurethane plastic foaming agent is characterized in that nanoscale foam metal is taken as a carrier, sodium bicarbonate is loaded, and a polyethylene wax layer coats surfaces of nanoscale foam metal particles. The polyurethane plastic foaming agent has the obvious effect that the foaming agent can be uniformly dispersed in a polyurethane raw material, the coating layer is stripped due to heat produced in a polyurethane reaction process, the loaded sodium bicarbonate slowly releases gas, and uniform foaming is produced; and meanwhile, the nanoscale foam metal is uniformly dispersed into a polyurethane matrix and has electrostatic shielding effect. Compared with the traditional foaming method, the polyurethane plastic foaming agent realizes that the prepared micro-foaming product is uniform in foam pore distribution, is moderate in foam pore size and good in mechanical properties and can be used as a structural material.

Description

technical field [0001] The invention relates to the field of preparation of polyurethane plastic foaming agents, in particular to a polyurethane plastic foaming agent with electrostatic shielding function. Background technique [0002] Polyurethane plastic has excellent elasticity, softness, elongation and compression strength, good chemical stability, resistance to various solvents and oils, excellent wear resistance, and excellent processability, heat insulation, adhesion, etc. performance. Polyurethane plastics are widely used in aviation, railways, construction, home decoration, daily necessities, sports and coatings, etc. [0003] In 1937, Bayer in Germany synthesized the first polyurethane thermoplastic. In the 1940s, the synthetic fiber Perlon was produced. In the 1950s, polyurethane elastomers, elastic fibers and foamed plastics were obtained. In the 1960s, polyurethane coatings and adhesives began to be applied. my country's polyurethane industry started in the l...

Claims

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Application Information

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IPC IPC(8): C08J9/08C08L75/04
CPCC08J9/0066C08J9/08C08J2203/02C08J2375/04
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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