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Non-yellowing key and manufacturing method thereof

A technology of piano keys and content, applied in the field of piano keys, can solve the problems of unsightly appearance, yellowing and discoloration of the surface of keys, etc., and achieve the effect of improving yellowing resistance, highlighting impact resistance, and good yellowing resistance

Inactive Publication Date: 2018-03-23
东莞市美派电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The plastic injection molding material of conventional white keys is high-gloss ABS757 material. Under normal circumstances, after about 1 to 2 years of use, the surface of these originally white keys will start to turn yellow and discolored, and cannot withstand the influence of environmental factors. unsightly

Method used

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  • Non-yellowing key and manufacturing method thereof
  • Non-yellowing key and manufacturing method thereof
  • Non-yellowing key and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A non-yellowing piano key, the non-yellowing piano key includes the following raw materials in parts by weight:

[0030]

[0031] The ABS resin is an acrylonitrile-butadiene-styrene copolymer with an acrylonitrile unit content of 15%, a butadiene unit content of 25%, and a styrene unit content of 60%.

[0032] The AS resin is an acrylonitrile-styrene copolymer with an acrylonitrile unit weight content of 60%.

[0033] The flame retardant is a mixture composed of polycyanamide cyanurate, triphenyl phosphate, magnesium hydroxide and montmorillonite in a weight ratio of 1:0.8:1:0.4.

[0034] The compatibilizer is a four-element random copolymer formed by copolymerizing methyl styrene, methacrylonitrile, methacrylic acid and methyl methacrylate at a weight ratio of 2:2:0.8:0.5.

[0035] The anti-yellowing agent is composed of 2-(2'-hydroxyl-3',5'-dipentylphenyl)-benzotriazole, dibutyl hydroxytoluene and 2-hydroxyl-4-n-octyloxy A mixture of benzophenones in a weight rat...

Embodiment 2

[0041] The difference between this embodiment and the above-mentioned embodiment 1 is that: the non-yellowing piano key includes the following raw materials in parts by weight:

[0042]

[0043] The ABS resin is an acrylonitrile-butadiene-styrene copolymer with an acrylonitrile unit content of 17.5%, a butadiene unit content of 27.5%, and a styrene unit content of 55%.

[0044] The AS resin is an acrylonitrile-styrene copolymer with an acrylonitrile unit weight content of 65%.

[0045] The flame retardant is a mixture composed of polycyanamide cyanurate, triphenyl phosphate, magnesium hydroxide and montmorillonite in a weight ratio of 1.2:0.9:1:0.5.

[0046] The compatibilizer is a four-element random copolymer formed by copolymerizing methyl styrene, methacrylonitrile, methacrylic acid and methyl methacrylate at a weight ratio of 2.5:2.5:0.9:0.8.

[0047] The anti-yellowing agent is composed of 2-(2'-hydroxyl-3',5'-dipentylphenyl)-benzotriazole, dibutyl hydroxytoluene and...

Embodiment 3

[0052] The difference between this embodiment and the above-mentioned embodiment 1 is that: the non-yellowing piano key includes the following raw materials in parts by weight:

[0053]

[0054] The ABS resin is an acrylonitrile-butadiene-styrene copolymer with an acrylonitrile unit content of 20%, a butadiene unit content of 30%, and a styrene unit content of 50%.

[0055] The AS resin is an acrylonitrile-styrene copolymer with an acrylonitrile unit weight content of 70%.

[0056] The flame retardant is a mixture composed of polycyanamide cyanurate, triphenyl phosphate, magnesium hydroxide and montmorillonite in a weight ratio of 1.5:1:1:0.6.

[0057] The compatibilizer is a four-element random copolymer formed by copolymerization of methyl styrene, methacrylonitrile, methacrylic acid and methyl methacrylate in a weight ratio of 3:3:1:1.

[0058] The anti-yellowing agent is composed of 2-(2'-hydroxyl-3',5'-dipentylphenyl)-benzotriazole, dibutyl hydroxytoluene and 2-hydrox...

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Abstract

The invention relates to the technical field of keys, and concretely relates to a non-yellowing key and a manufacturing method thereof. The non-yellowing key comprises, by weight, 50-90 parts of ABS resin, 20-40 parts of AS resin, 10-20 parts of a halogen-free flame retardant, 1-5 parts of a compatibilizer, 1-3 parts of an anti-yellowing agent and 0.5-1.5 parts of an anti-ultraviolet agent. The non-yellowing key adopting the AS resin, the anti-yellowing agent and the anti-ultraviolet agent has good yellowing resistance, can maintain the original white effect for a long time, and also has goodmechanical and physical properties.

Description

technical field [0001] The invention relates to the technical field of piano keys, in particular to a non-yellowing piano key and a manufacturing method thereof. Background technique [0002] The plastic injection molding material of conventional white keys is high-gloss ABS757 material. Under normal circumstances, after about 1 to 2 years of use, the surface of these originally white keys will start to turn yellow and discolored, and cannot withstand the influence of environmental factors. Not beautiful. Contents of the invention [0003] In order to overcome the shortcomings and deficiencies existing in the prior art, the object of the present invention is to provide a non-yellowing piano key, which has a good anti-yellowing effect and can maintain the original white effect for a long time; it also has good mechanical and physical properties. performance. [0004] Another object of the present invention is to provide a method for producing a non-yellowing piano key, wh...

Claims

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Application Information

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IPC IPC(8): C08L55/02C08L25/12C08L25/16C08K13/02C08K5/3492C08K5/523C08K3/22C08K3/34C08K5/3475C08K5/132C08K5/3435C08K3/36C08K5/134C08K5/526
CPCC08L55/02C08K2003/2224C08L2201/08C08L2205/03C08L2205/08C08L25/12C08L25/16C08K13/02C08K5/34924C08K5/523C08K3/22C08K3/346C08K5/3475C08K5/132C08K5/3435C08K3/36C08K5/1345C08K5/526
Inventor 叶玉照
Owner 东莞市美派电子科技有限公司
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