High-concentration flame-retardant masterbatch applicable to polycarbonate and preparation method thereof
A technology of polycarbonate and flame retardant masterbatch, applied in the field of high-concentration flame retardant masterbatch and its preparation, can solve the problems of difficult and uniform distribution of flame retardants, save time and intermediate costs, have little impact on mechanical properties, and prevent Highly flammable effect
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[0022] Example 1:
[0023] Provide a high-concentration flame-retardant masterbatch suitable for polycarbonate, which is composed of the following ingredients in a weight ratio: polycarbonate (PC): 15%, bromotriazine: 80%, diphenyl phosphate: 4 %, antioxidant: 0.8%, lubricant: 0.2%.
[0024] Polycarbonate (PC): It is a powder with a melt flow rate of 15-20g / 10min. The antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, and the lubricant is ethylene bis-stearamide.
[0025] The preparation method of high-concentration flame-retardant masterbatch suitable for polycarbonate includes the following steps:
[0026] (1) First, add polycarbonate and diphenyl phosphate into the high-speed batching mixer, add bromotriazine, antioxidant and lubricant and mix for 5 minutes;
[0027] (2). Then put the mixed premix in a twin-screw machine, melt and extrude, and heat-cut air-cooled to obtain a high-concentration flame-retardant masterbatch suitable for polycarbonate. The pr...
Example Embodiment
[0028] Example 2:
[0029] Provide a high-concentration flame-retardant masterbatch suitable for polycarbonate, which is composed of the following ingredients in a weight ratio, polycarbonate (PC): 25%, bromotriazine: 70%, diphenyl phosphate: 4 %, antioxidant: 0.8%, lubricant: 0.2%.
[0030] Polycarbonate (PC): It is a powder with a melt flow rate of 15-20g / 10min. The antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, and the lubricant is stearic acid amide.
[0031] The preparation method of high-concentration flame-retardant masterbatch suitable for polycarbonate includes the following steps:
[0032] (1) First, add polycarbonate and diphenyl phosphate into the high-speed batching mixer, add bromotriazine, antioxidant and lubricant and mix for 5 minutes;
[0033] (2). Then put the mixed premix in a twin-screw machine, melt and extrude, and heat-cut air-cooled to obtain a high-concentration flame-retardant masterbatch suitable for polycarbonate. The process...
Example Embodiment
[0034] Example 3:
[0035] Provide a high-concentration flame-retardant masterbatch suitable for polycarbonate, which is composed of the following ingredients in a weight ratio, polycarbonate (PC): 35%, bromotriazine: 60%, diphenyl phosphate: 4 %, antioxidant: 0.8%, lubricant: 0.2%.
[0036] Polycarbonate (PC): It is a powder with a melt flow rate of 15-20g / 10min. The antioxidant is tris(2,4-di-tert-butylphenol) phosphite, and the lubricant is ethylene bis-stearamide.
[0037] The preparation method of high-concentration flame-retardant masterbatch suitable for polycarbonate includes the following steps:
[0038] (1) First, add polycarbonate and diphenyl phosphate into the high-speed batching mixer, add bromotriazine, antioxidant and lubricant and mix for 5 minutes;
[0039] (2). Then put the mixed premix in a twin-screw machine, melt and extrude, and heat-cut air-cooled to obtain a high-concentration flame-retardant masterbatch suitable for polycarbonate. The process is: twin screw ...
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