Method for preparing halogen-free smoke-suppressant and flame-retardant plastic optical fiber sheath
A plastic optical fiber and flame-retardant technology, which is applied in the field of preparation of plastic optical fiber sheaths, can solve the problems of plastic optical fiber products such as flammability and potential safety hazards, achieve the effects of reduced mechanical properties, meet product requirements, and improve affinity
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Embodiment 1
[0018] Add 100 kg of xylene, 20 kg of commercially available magnesium hydroxide flame retardant powder and 1 kg of sodium lauryl sulfate into a 500-liter carbon steel kettle, start stirring, and stir well; heat up to 70°C, and keep warm for 70 minutes Stop stirring and heating, filter the reaction materials, dry and ball mill to obtain the magnesium hydroxide powder modified by the first step. Add 100 kg of xylene, 20 kg of one-step modified magnesium hydroxide flame retardant powder and 0.6 kg of aminopropyltrimethoxysilane into a 500-liter carbon steel kettle, start stirring, and stir well; heat up to 85°C , heat preservation reaction for 50 minutes; stop stirring and heating, filter, dry and ball mill the reaction materials to obtain magnesium hydroxide powder modified in the second step.
[0019] Add 60 kilograms of polyethylene in internal mixer, 0.9 kilograms of flame retardant accelerator aluminum hydroxide, 0.48 kilograms of flame retardant synergist ammonium polyphos...
Embodiment 2
[0021] Add 350 kg of low-viscosity methyl silicone oil, 20 kg of commercially available magnesium hydroxide flame retardant powder and 1.2 kg of polyoxyethylene sorbitan monooleate 85 (Tween85) into a 500-liter carbon steel kettle, start stirring, Stir evenly; raise the temperature to 75° C., and keep it warm for 50 minutes; stop stirring and heating, filter, dry and ball-mill the reaction materials to obtain magnesium hydroxide powder modified by the first step. Add 350 kg of low-viscosity methyl silicone oil, 20 kg of one-step modified magnesium hydroxide flame retardant powder and 0.8 kg of ureapropyltriethoxysilane into a 500-liter carbon steel kettle, start stirring, and stir well ; Heating up to 8, ℃, heat preservation reaction for 50 minutes; stop stirring and heating, filter, dry and ball mill the reaction materials to obtain magnesium hydroxide powder modified in the second step.
[0022] Add 60 kg of polyethylene, 1.2 kg of antimony oxide, 0.75 kg of red phosphorus, ...
Embodiment 3
[0024] Add 150 kg of liquid paraffin, 20 kg of commercially available magnesium hydroxide flame retardant powder and 1 kg of sodium dodecylbenzenesulfonate into a 500-liter carbon steel kettle, start stirring, and stir well; heat up to 45°C, and keep warm for reaction 100 minutes; stop stirring and heating, filter the reaction materials, dry, and ball mill to obtain the magnesium hydroxide powder modified by the first step. Add 150 kg of liquid paraffin, 20 kg of one-step modified magnesium hydroxide flame retardant powder and 1 kg of stearic acid into a 500-liter carbon steel kettle, start stirring, and stir well; heat up to 75 ° C, keep warm for 70 Minutes; stop stirring and heating, filter the reaction materials, dry, and ball mill to obtain magnesium hydroxide powder modified in the second step.
[0025] Add 60 kg of polyethylene, 1.5 kg of molybdenum trioxide, 1 kg of ammonium pyrophosphate, and 15 kg of the above-mentioned two-step modified magnesium hydroxide flame reta...
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