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
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[0028] Example 1
[0029] A non-yellow keyboard, said non-yellow keyboard includes the following raw materials 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 quaternary random copolymer formed by copolymerization of methyl styrene, methacrylonitrile, methacrylic acid and methyl methacrylate in a weight ratio of 2:2:0.8:0.5.
[0035] The anti-yellowing agent is composed of 2-(2'-hydroxy-3',5'-dipentylphenyl)-benzotriazole, dibutylhydroxytoluene and 2-hydroxy-4-n-octyloxy A mixture of benzophenone in a weight ratio of 0.5:1.5...
Example Embodiment
[0040] Example 2
[0041] The difference between this embodiment and the above-mentioned embodiment 1 is that the non-yellowing keys include the following raw materials 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 quaternary random copolymer formed by copolymerizing methyl styrene, methacrylonitrile, methacrylic acid and methyl methacrylate in a weight ratio of 2.5:2.5:0.9:0.8.
[0047] The anti-yellowing agent is composed of 2-(2'-hydroxy-3',5'-dipentylphenyl)-benzotriazole, dibutylhydroxytoluene and 2-hydroxy-4-n-o...
Example Embodiment
[0051] Example 3
[0052] The difference between this embodiment and the above-mentioned embodiment 1 is that the non-yellowing keys include the following raw materials 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 quaternary 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'-hydroxy-3',5'-dipentylphenyl)-benzotriazole, dibutylhydroxytoluene and 2-hydroxy-4-n-octyloxy ...
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