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Magnetic coating for recording tape

A technology of magnetic paint and audio tape, which is applied in the chemical industry, can solve the problems of general wear resistance of magnetic paint and poor high-temperature storage performance, and achieve the effects of low manufacturing cost, good high-temperature storage performance, and good effect

Inactive Publication Date: 2012-03-28
陈瑜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some existing magnetic coatings have average abrasion resistance, or poor high-temperature storage properties, which cannot achieve good results and cannot meet the needs of audio tapes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described below in conjunction with embodiment.

[0016] First, add the components into the ball mill according to the ratio. The ball mill adopts a ball mill with a water-through constant temperature jacket and is filled with steel balls. The ball mill is 20-30 hours. Three-stage filtration is performed on the paint dispersed by ball milling. The first stage is general coarse filtration, the second stage uses a 3-5 micron fiber filter cartridge, and the third stage uses a 1-2 micron fiber filter cartridge or filter cloth. The magnetic paint is obtained after the third stage of filtration.

[0017] When using, the plastic belt should be cleaned and dedusted by wet or dry method first, and the static electricity should be eliminated with radioactive isotope. The coating method can be scraped coating, reverse roller coating or gravure coating and other methods. After application, the coating is dried using techniques such as hot air...

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PUM

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Abstract

The invention provides a magnetic coating for a recording tape. The magnetic coating for the recording tape comprises a chloroethylene vinyl acetate copolymer, gamma-ferric oxide magnetic powder, toluene, 4-methyl-2-pentanone and silicon oil. The magnetic coating for the recording tape is prepared from raw materials such as a magnetic powder film-forming base material, an aid, a solvent and the like by mixing, dispersing and filtering. The magnetic coating for the recording tape has the advantages of low manufacturing cost, high wear resistance, high-temperature storage property and the like.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a magnetic coating for audio tapes. Background technique [0002] Magnetic recording materials can record and reproduce sound, images and various information. It is made by applying magnetic paint on various substrates. The quality of magnetic recording materials also depends on the magnetic paint to a large extent. . Some existing magnetic coatings have general abrasion resistance or poor high-temperature storage properties, which cannot achieve good results and cannot meet the needs of audio tapes. Contents of the invention [0003] The invention overcomes the deficiencies in the prior art, provides a magnetic coating for audio tapes, has better effect, and satisfies the requirement of magnetic coatings for the quality of audio tapes. [0004] In order to achieve the above purpose, the following technical solutions are adopted: [0005] A magnetic tape magnetic coating, th...

Claims

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Application Information

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IPC IPC(8): C09D127/06C09D131/04C09D7/12C09D5/23
Inventor 陈瑜
Owner 陈瑜