Black matte polyimide film comprising titanium dioxide and preparation method thereof

A matte polyimide and polyimide technology, which is applied in the field of electronic thin film insulating material preparation, can solve the problem that the mechanical properties of the polyimide film cannot be guaranteed, the nano-inorganic powder agglomerates are not easily dispersed, and the dimensional stability cannot be improved. problems such as stability, etc., to achieve the effect of expanding the application field of the product, improving the dimensional stability, and improving the rigidity

Pending Publication Date: 2018-11-30
GUILIN ELECTRICAL EQUIP SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Nano-powder has a strong specific surface effect and extremely strong polarity. Most of the organic systems will form an inorganic-organic interface phase, which can easily make the nano-inorganic powder agglomerate and not be easily infiltrated by organic matter. When added to a certain viscosity Among the polyamic acid resins, the nano-inorganic powder aggregates are more difficult to disperse, which not only increases the difficulty of the dispersion process in production, but also cannot guarantee the mechanical properties of the polyimide film, let alone improve the dimensional stability, which affects the application effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Black matt polyimide film containing nano-titanium dioxide: according to the percentage by weight, it is composed of 95.65% polyimide polymer and 4.35% inorganic filler, specifically 150 kg of polyamic acid resin, and the inorganic filler is dispersed Liquid is 20 kg. The inorganic filler dispersion is composed of the following components in grams by weight: 1.0 kg of low-conductivity carbon black with a particle size of 10 nm, 0.4 kg of silica with a particle size of 3 μm produced by the gas phase method, and mixed crystals with a particle size of 60 nm. 0.1 kg of titanium dioxide, 0.5 kg of Disparlon 6500 polyamide wax anti-settling agent, and 18.0 kg of N,N-dimethylformamide as a polar organic solvent.

[0035] The preparation method of the black matt polyimide film containing nano-titanium dioxide is as follows:

[0036] Step 1), making filler dispersion, the preparation method of filler dispersion is as follows:

[0037] Step 1.1), at 10°C, mix 1.0 kg of low-cond...

Embodiment 2

[0044] Black matt polyimide film containing nano-titanium dioxide: according to the percentage by weight, it is composed of 78.12% polyimide polymer and 21.88% inorganic filler, specifically 150 kg of polyamic acid resin, and the inorganic filler is dispersed Liquid is 61 kg. The inorganic filler dispersion is composed of the following components in grams by weight: 1.0 kg of low-conductivity carbon black with a particle size of 10 nm, 2.0 kg of matting powder with a particle size of 3 μm produced by the gas phase method, and a mixture of 100 nm particle size. 1.2 kg of crystalline titanium dioxide, 3.6 kg of Disparlon 6500 polyamide wax anti-settling agent, and 53.2 kg of N,N-dimethylformamide as a polar organic solvent.

[0045] The preparation method of the black matt polyimide film containing nano-titanium dioxide is as follows:

[0046] Step 1), making filler dispersion, the preparation method of filler dispersion is as follows:

[0047] Step 1.1), at 10°C, mix 1.0 kg o...

Embodiment 3

[0054] Black matt polyimide film containing nano-titanium dioxide: according to the percentage by weight, it is composed of 93.46% polyimide polymer and 6.54% inorganic filler, specifically 150 kg of polyamic acid resin, and the inorganic filler is dispersed Liquid is 21.5 kg. The inorganic filler dispersion is composed of the following components in grams by weight: 1.0 kg of low-conductivity carbon black with a particle size of 10 nm, 1.0 kg of silica with a particle size of 3 μm produced by the gas phase method, and rutile type with a particle size of 65 nm. 0.1 kg of titanium dioxide, 0.5 kg of Disparlon 6500 polyamide wax anti-settling agent, and 18.9 kg of N,N-dimethylformamide as a polar organic solvent.

[0055] A kind of preparation method of the black matt polyimide film that contains nano-titanium dioxide is as follows:

[0056] Step 1), making filler dispersion, the preparation method of filler dispersion is as follows:

[0057] Step 1.1), at 10°C, mix 1.0 kg of ...

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Abstract

The invention relates to a black matte polyimide film comprising nano titanium dioxide. The black matte polyimide film comprises a polyimide polymer and inorganic filler, wherein the inorganic filleris added into the polyimide in a form of filler dispersion, and the filler dispersion comprises the following components in parts by weight: 1.0 part of low-conductivity carbon black, 0.4 to 2.0 partsof matting powder, 0.1 to 1.2 parts of nano titanium dioxide, 0.5 to 3.6 parts of anti-settling agent, and 18.0 to 53.2 parts of polarity organic solvent. Due to the existence of Ti-O-Ti structure, the nano titanium dioxide is added into the polyimide and has strong interaction force with polyimide molecules, so that not only is the thermal decomposition temperature relatively high, but also theactivity of the polyimide molecule can be inhibited, the rigidness can be improved, and the size stability is good.

Description

technical field [0001] The invention belongs to the technical field of preparation of electronic thin film insulating materials, and in particular relates to a black matte polyimide film containing nano-titanium dioxide. Background technique [0002] With the rapid development of optoelectronic products in the market, higher requirements are put forward for the comprehensive performance of black polyimide film as a cover film of optoelectronic products, that is, black polyimide film is required to have good light-shielding properties, high electrical Along with insulation and low gloss, new requirements are placed on the dimensional stability of black matt polyimide films. Black polyimide film is prepared by adding black pigments. Among many black pigments such as carbon black, graphite, plant black, animal black and organic black, nano-carbon black has higher blackness, tinting strength, and dispersibility. , are widely used in coatings and plastics. When more nano-carbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08L77/00C08K3/04C08K3/36C08K3/22C08J5/18
CPCC08J5/18C08J2379/08C08J2477/00C08K3/04C08K3/36C08K2003/2241C08K2201/011
Inventor 姬亚宁蒋耿杰黄孙息唐必连
Owner GUILIN ELECTRICAL EQUIP SCI RES INST
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