High-performance environment-friendly flame-retardant communication cable sheathing compound and preparation method thereof
A communication cable, a high-performance technology, applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., to achieve the effect of broad market application prospects, controllable response, and long service life
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[0022] Example 1: The compounding ratio of the raw materials in the high-performance environmentally friendly flame-retardant communication cable sheath material
[0023] The raw materials in the high-performance environmentally-friendly flame-retardant communication cable sheath material are mixed according to the mass parts described in Table 1, to obtain 3 groups of high-performance environmentally-friendly flame-retardant communication cable sheath materials I to III with different mixing ratios.
[0024] Table 1 High-performance environmentally friendly flame-retardant communication cable sheath materials I~III with different mixing ratios (parts by mass)
[0025]
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[0026] Example 2: Preparation method of high-performance environment-friendly flame-retardant communication cable sheath material I
[0027] Step 1. Preparation of epoxy-modified polyurethane: Put 30 parts of polyether polyol into the reaction kettle, heat to 120°C for reflux dehydration for 1 hour while stirring, then add 35 parts of toluene diisocyanate when the temperature is lowered to 50°C, and slowly raise the temperature to 80°C, stirred and reacted for 4-6h to obtain polyurethane prepolymer; 15 parts of tetrahydrophthalate diglycidyl ester were dehydrated in vacuum for 1-3 hours at 80°C, and after cooling to 60°C, they were added to the The polyurethane prepolymer, 8 parts of 1,4-butanediol, 15 parts of trimethylolpropane, 16 parts of methyltetrahydrophthalic anhydride and 2,3,6-tris(dimethylaminomethyl) ) 1 part of phenol, heated to 70-90°C, stirred and reacted for 6-8 hours to obtain the epoxy-modified polyurethane;
[0028] Preparation of active flame retardant: under t...
Example Embodiment
[0030] Example 3: Preparation method of high-performance environment-friendly flame-retardant communication cable sheath material II
[0031] Step 1. Preparation of epoxy-modified polyurethane: Put 45 parts of polyether polyol into the reaction kettle, heat to 120°C for reflux dehydration for 1 hour while stirring, then add 55 parts of toluene diisocyanate when the temperature is lowered to 50°C, and slowly raise the temperature to Stir and react at 80°C for 4-6h to obtain polyurethane prepolymer; 25 parts of diglycidyl tetrahydrophthalate are dehydrated in vacuum at 80°C for 1-3 hours, and after cooling to 60°C, they are added sequentially The polyurethane prepolymer, 12 parts of 1,4-butanediol, 23 parts of trimethylolpropane, 24 parts of methyltetrahydrophthalic anhydride and 2,3,6-tris(dimethylaminomethyl ) 5 parts of phenol, heated to 70-90°C, stirred and reacted for 6-8 hours to obtain the epoxy-modified polyurethane;
[0032] Preparation of active flame retardant: under the ...
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