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Preparation method for high anti-tracking halogen-free flame-retardant glass-cloth laminate

A tracking-resistant and tracking-resistant technology is applied in lamination, lamination devices, chemical instruments and methods, etc. It can solve problems such as fire, short-circuit fire, and easy sparks, and achieves increased resin stability and increased polarity. Sexual group ratio, the effect of satisfying alcohol solubility

Active Publication Date: 2015-10-21
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

In fact, it is the process that the insulating material gradually forms a conductive path under the combined action of the electric field and the electrolyte, and it is easy to generate sparks, resulting in local short circuit fires, and even serious fires.

Method used

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  • Preparation method for high anti-tracking halogen-free flame-retardant glass-cloth laminate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Synthesis of melamine formaldehyde resin:

[0023] Put 100g of formaldehyde solution (37%), 73.5g of paraformaldehyde and 90g of methanol into the reactor, slowly raise the temperature to 70-80°C and keep it warm for 30min; , heat up to 70-80°C and react for 50 minutes, cool down to stop the reaction, and set aside;

[0024] (2) Synthesis of alcohol-soluble bisphenol A type epoxy resin

[0025] Add 300g of F51, 30g of propylene glycol monomethyl ether and 20g of methanol to the reactor in turn, heat to 70-80°C, stir and react for 30min, add 80.4g of diethanolamine and 94g of methanol, continue to react at 70-80°C for 120min, add 50g of methanol cooling to terminate the reaction, standby;

[0026] (3) Preparation of halogen-free flame retardant resin system

[0027] The above self-made melamine formaldehyde resin and alcohol-soluble bisphenol A epoxy resin are mixed according to the dry resin weight ratio of 2:1, and the molding time is tested by sampling (70-300s...

Embodiment 2

[0030] (1) Synthesis of melamine formaldehyde resin:

[0031] 100g of formaldehyde solution (37%) and about 0.25g of guanidine carbonate were put into the reactor, the pH was controlled at 9-10, 100g of melamine was put into the reactor, the temperature was slowly raised to 70-80°C and then kept for 60min; Adjust the pH to 5-6 with about g of oxalic acid, raise the temperature to 50-60°C for 30 minutes, adjust the pH to 9-10 with about 0.82g of guanidine carbonate, add 54.6g of melamine and 82.5g of paraformaldehyde respectively, and raise the temperature to 70-60°C. React at 80°C for 60 minutes, cool down and add 206g of methanol to stop the reaction, and set aside;

[0032] (2) Synthesis of alcohol-soluble bisphenol A type epoxy resin

[0033] Add 300g of E-35, 10g of propylene glycol monomethyl ether and 35g of methanol to the reactor successively, heat to 70-80°C, stir and react for 30min, then add 33.1g of diethanolamine and 80g of methanol, and continue to react at 70-8...

Embodiment 3

[0038] (1) Synthesis of melamine formaldehyde resin:

[0039] 202g of formaldehyde solution (37%), 35.2g of paraformaldehyde, 119g of methanol and 150g of melamine were put into the reactor respectively, and the temperature was slowly raised to 70-80°C and then kept for 15 minutes. React at ~80°C for 60 minutes, cool down to stop the reaction, and set aside;

[0040] (2) Synthesis of alcohol-soluble bisphenol A type epoxy resin

[0041] Add 300g E-51, 10 propylene glycol monomethyl ether and 40g methanol to the reactor successively, heat to 70-80°C, stir for 30min, then add 128.7g of diethanolamine and 70g of methanol, and continue to react at 70-80°C for 120min , add 74g methanol to cool down to terminate the reaction, set aside;

[0042] (3) Preparation of halogen-free flame retardant resin system

[0043] The above self-made melamine formaldehyde resin and alcohol-soluble bisphenol A epoxy resin are mixed according to the dry resin weight ratio of 3:1, and the molding ti...

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Abstract

The invention discloses a preparation method for a high anti-tracking halogen-free flame-retardant glass-cloth laminate, comprising the following steps of: (1) preparing raw materials: composition of a halogen-free flame-retardant resin system: used in solventless weight, 50-75 parts of melamine formaldehyde resin, 25-50 parts of prolamine bisphenol A epoxy resin, 60-100 parts of solvent and 0-40 parts of filler; (2) preparing the halogen-free flame-retardant resin system, which comprises: preparing melamine formaldehyde resin and preparing the prolamine bisphenol A epoxy resin; and (3) performing preparing, superimposing and pressing based on the halogen-free flame-retardant resin system. The high anti-tracking halogen-free flame-retardant glass-cloth laminate provided by the invention have the property of halogen-free flame-retardant that is environmentally friendly and has good anti-tracking property and arc resistance.

Description

technical field [0001] The invention relates to a method for preparing a laminate, in particular to a method for preparing a halogen-free flame-retardant glass cloth laminate with excellent tracking resistance and arc resistance. Background technique [0002] With the development of high voltage and ultra-high voltage in the power system, and the harsh operating environment of electrical equipment, the performance of insulating materials has a decisive impact on the reliability and service life of transmission and distribution equipment, especially in roadsides, coastal areas, plateau areas and In the case of severe pollution, among them, the tracking resistance performance, as an important safety and reliability index, has been paid more and more attention by printed circuit board designers and complete machine manufacturers. The higher the tracking index of the insulating material, the better the electrical insulation performance in high humidity and dirty environments, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/42B32B27/20B32B37/10C08L61/28C08L63/00C08G12/32C08G59/64
CPCB32B27/20B32B27/42B32B37/10B32B2307/206B32B2307/3065B32B2457/04C08G12/32C08G59/64C08L61/28C08L63/00C08L2201/02C08L2201/22
Inventor 游维涛李娟司凌霞
Owner 北京新福润达绝缘材料有限责任公司
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