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Preparation method of a flame-retardant and electromagnetic shielding sandwich insulation material

A thermal insulation material and electromagnetic shielding technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems of complex process, high cost, can not meet the needs of production, etc., to simplify the processing technology , excellent flame retardancy, cost reduction effect

Active Publication Date: 2022-01-18
TAIYUAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process is relatively complicated and the cost is high, which cannot meet the needs of production.

Method used

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  • Preparation method of a flame-retardant and electromagnetic shielding sandwich insulation material
  • Preparation method of a flame-retardant and electromagnetic shielding sandwich insulation material

Examples

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Embodiment Construction

[0026] Such as figure 1 As shown, a novel flame-retardant and electromagnetic shielding sandwich insulation material provided by the present invention includes composite non-woven fabric and rigid polyurethane foam, the composite non-woven fabric is provided with upper, middle and lower layers, and rigid polyurethane foam It is filled between two composite non-woven fabrics, and the composite non-woven fabric is composed of carbon fiber cloth, adhesive, and sulfonamide cloth. Specifically, the adhesive is set to be water-based polyurethane.

[0027] The preparation method includes the following steps: Step 1: Apply the adhesive evenly on the carbon fiber cloth and the sulfonamide cloth, compound the two together, dry them in a constant temperature and humidity environment to prepare a composite Non-woven fabric; Step 2: After stirring the polyether polyol and phosphorus-based flame retardant evenly, then add isocyanate for secondary stirring to prepare rigid polyurethane foam...

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Abstract

The invention discloses a preparation method of a flame-retardant and electromagnetic shielding sandwich insulation material. The invention provides a preparation method of a flame-retardant and electromagnetic shielding sandwich insulation material. In the invention, by using a certain amount of adhesive, Carbon fiber cloth and sulfonamide cloth, under appropriate reaction temperature and time, prepare a new type of electromagnetic shielding and flame-retardant composite non-woven fabric, and then use the "two-step method" to combine the composite non-woven fabric with rigid polyurethane foam Combined together, by designing the structure of the polyurethane insulation material, a new type of sandwich insulation material with excellent flame retardancy and electromagnetic shielding performance is prepared, which simplifies the processing technology and reduces the cost, and has important economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of preparation of composite materials, in particular to a preparation method of a flame-retardant and electromagnetic shielding sandwich insulation material. Background technique [0002] Flame retardancy refers to the property of a substance or a material that has been treated to significantly delay the spread of flame. With the improvement of safety awareness, the requirements for flame retardancy of building materials, vehicles, home appliances and other materials are gradually increasing. There are many methods for evaluating flame retardancy, such as oxygen index measurement method, horizontal or vertical combustion test method, etc. In the past 10 years, a total of 31,000 high-rise building fires occurred nationwide, resulting in 474 deaths and direct property losses of 1.56 billion yuan. Since the building's thermal insulation exterior walls and furniture are highly flammable materials, they will bu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B7/12B32B27/12B32B27/40B32B9/00B32B9/04B32B27/08B32B27/02B32B27/34B32B33/00B32B37/12B32B38/16
CPCB32B5/18B32B5/022B32B27/12B32B7/12B32B9/045B32B33/00B32B37/1284B32B38/164B32B2266/0278B32B2262/106B32B2262/0269B32B2307/3065B32B2307/212
Inventor 王文敏石瑛王捷
Owner TAIYUAN NORMAL UNIV
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