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PPS/PA blend biaxially oriented film and preparation method thereof

A biaxially stretched film and blend technology, applied in the field of PPS/PA blend biaxially stretched film and its preparation, can solve the problems of capacitor damage and the inability to export heat from the film, so as to prolong the service life and improve the toughness performance , good compatibility effect

Active Publication Date: 2022-07-08
佛山市达孚新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to improve the problem that the film cannot quickly dissipate heat, resulting in damage to the capacitor, the application provides a PPS / PA blend biaxially stretched film and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0062] The proportions (unit: kg) of each component of the thermally conductive filler in Preparation Examples 1-10 are as follows in Table 1.

preparation example 1

[0066] A thermally conductive filler, the preparation method of which comprises the following steps:

[0067] The boron nitride nanosheets and the nanomagnesium oxide are uniformly mixed according to the ratio in Table 1 to obtain a thermally conductive filler.

preparation example 2-5

[0069] A thermally conductive filler, the preparation method of which comprises the following steps:

[0070] The boron nitride nanosheets, nanomagnesium oxide, silane coupling agent and polyethyleneimine are uniformly mixed according to the ratio in Table 1, and then dried to obtain a thermally conductive filler.

[0071] The silane coupling agent can be any one or a combination of both of KH550 and KH560, wherein, in this preparation example 2-5, the silane coupling agent is KH550.

[0072] When the thermally conductive filler is prepared by this method, when the molecular weight of polyethyleneimine is 5000-10000, the dispersion of the thermally conductive filler is better; wherein, the molecular weight of polyethyleneimine in this preparation example 2 is 10000, and the polyethyleneimine in preparation examples 3 and 5 has a better dispersion. The molecular weight of the imine is 5000.

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Abstract

The invention discloses a PPS / PA blend biaxially oriented film and a preparation method thereof, the PPS / PA blend biaxially oriented film is prepared from 60-70% of PPS resin, 12-18% of PA resin, 1-1.2% of an antioxidant, 14.8-18% of a heat conduction filler, 2-3% of a lubricant and other auxiliary agents, and the heat conduction filler comprises boron nitride nanosheets and nanometer magnesium oxide. The preparation method of the film comprises the following steps: drying the PPS resin; mixing PA, an antioxidant, the dried PPS resin, a heat-conducting filler, a lubricant and other auxiliaries according to a ratio, and then extruding and granulating to obtain modified PPS resin; and carrying out melt casting on the modified PPS resin to obtain a sheet, and carrying out two-way stretching on the sheet to obtain the PPS / PA blend two-way stretching film. The PPS / PA blend biaxially oriented thin film disclosed by the invention is good in film-forming property and also has heat-conducting property, so that the service life of a low-loss capacitor can be prolonged.

Description

technical field [0001] The present application relates to the field of film materials, in particular to a PPS / PA blend biaxially oriented film and a preparation method thereof. Background technique [0002] Polyphenylene sulfide, referred to as PPS in English, has a melting point of up to 280-290 °C and a decomposition temperature of more than 400 °C. It has the advantages of high temperature resistance, corrosion resistance, radiation resistance, non-flammability, non-toxicity, excellent mechanical properties and electrical properties. Thermoplastic crystalline resin with excellent comprehensive properties. Among them, the dielectric constant and dielectric loss of PPS resin are little affected by temperature and frequency, and the PPS film made of PPS resin has excellent electrical properties and can be used for low-loss capacitors. [0003] At present, PPS film is generally prepared by biaxially stretching PPS, which is beneficial to improve the tensile strength of PPS f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08L77/02C08L77/06C08L79/02C08K3/38C08K3/22C08K7/24C08K5/544C08K5/5435C08J5/18
CPCC08J5/18C08J2381/02C08J2477/02C08J2477/06C08J2479/02C08K2201/011C08K2003/385C08K2003/222C08K7/24C08K5/544C08K5/5435
Inventor 林善华张笋黄亦迎刘书萌
Owner 佛山市达孚新材料有限公司
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