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Manufacturing method of high-strength laminated thermal insulation composite material

A composite material and high-strength layer technology, applied in the field of composite materials for laminated products, can solve problems such as failure to meet actual needs, high cost, and easy breakage

Active Publication Date: 2020-09-15
北京新福润达绝缘材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The application of thermal insulation materials in industrial engineering is of great significance to energy saving and emission reduction, while traditional thermal insulation materials are generally porous or micro-nano composite structure materials, such as airgel, polyurethane foam, etc., with low mechanical strength (The compressive strength is generally lower than 8MPa), easy to break, and has many limitations in practical applications. In addition, its preparation process is generally more complicated. For example, airgel generally needs to go through sol preparation, gelation treatment, and alcohol aging. , supercritical drying and heat treatment and many other steps, the strength of the prepared samples is generally lower than 1MPa; and the difficulty of polyurethane insulation materials is that many raw materials include polyether polyols, polyester polyols, isocyanates, surfactants, physical foaming agents, etc. Screening, and the subsequent mixing, foaming, aging and other processes are complex and time-consuming, the strength of the prepared samples is generally lower than 8MPa, and the highest compressive strength reported is only 42MPa, the cost is high, and it cannot meet the actual needs under high pressure.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 100kg of 638S type epoxy novolac, 40kg of E44 type epoxy resin, 20kg of 4,4'-diaminodiphenyl sulfone (DDS), 0.45kg of V85-P type hindered phenolic antioxidant, 1.2kg of KH560 type silane coupling agent, dissolve in acetone, stir evenly to obtain premixed slurry, put it in a container for temporary storage, and the storage period should not exceed 3 months.

[0023] Take the above premixed slurry, weigh the accelerator boron trifluoride monoethylamine according to the solid content of the resin in the premixed slurry 10wt‰, dissolve it in acetone, stir and mix with the taken premixed slurry evenly, and adjust the curing time to 160-180s, the mixed slurry is ready for use, and the storage period is no more than 1 week;

[0024] The insulating substrate is made of ceramic paper (ceramic fiber paper) with a thickness of 2 mm. Cut the ceramic paper to the approved size, such as 1250mm×1000mm, or cut it according to your needs;

[0025] Weigh the cut ceramic paper, and lay ...

Embodiment 2

[0030] In this embodiment, ceramic paper and electronic cloth are selected as the insulating substrate, and Changjiang 7628 type is selected for the electronic cloth.

[0031] The method of using the mixed slurry to glue the ceramic paper to make the prepreg A is the same as that of Example 1.

[0032] The steps of gluing the electronic cloth are as follows, and the gluing method is continuous operation.

[0033] Put the mixed slurry in the glue tank first, use the tractor to guide the uniaxial dipping of the cloth, control the amount of glue by squeezing the rollers, adjust the pressure of the rollers, and control the glue amount to 21wt%; enter the chain dryer for drying; the traction speed is 3m / min, the temperature of the dryer is set at 140°C, the length of the oven box of the dryer is 9m, and the dryer is equipped with a self-made deviation correction device; the dipping material is dried Finally, the prepreg B is obtained, which can be cut according to the specificatio...

Embodiment 3

[0037] The insulating substrate in this embodiment is selected from ceramic paper and grid cloth, and the grid cloth is 300g-1050 type, and the grid cloth is glass fiber grid cloth.

[0038] The method of using the mixed slurry to glue the ceramic paper to make the prepreg A is the same as that of Example 1.

[0039] The square cloth is glued by dipping, and the gluing method is continuous operation.

[0040] Put the mixed slurry in the glue tank, use the tractor to guide the uniaxial dipping of the cloth, control the amount of glue by squeezing the rollers, adjust the pressure of the rollers, and control the amount of glue to be no more than 18wt%; the dipping material is in the tractor Under the action of tension, it enters the chain dryer for drying; the traction speed is 3m / min, the temperature of the dryer is set at 140°C, the length of the oven box of the dryer is 9m, and the dryer is equipped with a self-made deviation correction device; After drying, a prepreg C is ob...

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PUM

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Abstract

The invention relates to a manufacturing method of a high-strength laminated thermal insulation composite material. High-temperature-resistant and low-thermal-conductivity ceramic fiber paper is usedas a base material; the high-strength thermal insulation composite material is prepared by taking high-temperature-resistant phenolic epoxy resin as an adhesive, the density of the high-strength thermal insulation composite material is controlled between 1.5 g / cm < 3 > and 1.8 g / cm < 3 >, the glass transition temperature (Tg) of the obtained product is maintained above 160 DEG C, the normal compression strength is 300MPa or above, and the high-strength thermal insulation composite material can be used for a long time at 200 DEG C.

Description

technical field [0001] The invention relates to a manufacturing method of a high-strength laminated heat-insulating composite material, which belongs to the technical field of laminated product composite materials. Background technique [0002] The application of thermal insulation materials in industrial engineering is of great significance to energy saving and emission reduction, while traditional thermal insulation materials are generally porous or micro-nano composite structure materials, such as airgel, polyurethane foam, etc., with low mechanical strength (The compressive strength is generally lower than 8MPa), easy to break, and has many limitations in practical applications. In addition, its preparation process is generally more complicated. For example, airgel generally needs to go through sol preparation, gelation treatment, and alcohol aging. , supercritical drying and heat treatment and many other steps, the strength of the prepared samples is generally lower tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/10B32B27/08B32B27/38C08L63/04C08L63/00C08K5/5435C08K5/13
CPCB32B37/10B32B27/06B32B27/38C08L63/04C08L2205/02B32B2307/304C08L63/00C08K5/5435C08K5/13
Inventor 杨朋飞张金鑫朱振国王晓东
Owner 北京新福润达绝缘材料有限责任公司