Processing technology of insulating thermosetting plastic material
A processing technology and plastic material technology, which is applied in the field of plastic material processing, can solve the problems that thermally conductive plastics cannot meet the requirements, and achieve the effects of improving insulation and corrosion resistance, good flame retardancy, and simple preparation process
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Embodiment 1
[0017] A processing technique for an insulating plastic material, comprising the steps of:
[0018] Step 1) Crushing and grinding: Add dolomite, perlite and sepiolite to the crusher in a mass ratio of 2:1:1 for crushing, and then grind to obtain a powder with a particle size of 200 mesh, which is material A ;
[0019] Step 2) Preparation of modified resin: Add material A, alumina and serine into the mixing tank in sequence, and stir while heating. When heated to 90°C, add methacryloxypropyltrimethoxysilane to maintain Continue stirring at 90°C for 20 minutes; then cool down to 60°C, add polyethylene resin, and stir for 1 hour to obtain material B; wherein, the material A, alumina, serine, methacryloxypropyltrimethoxysilane and The mass ratio of polyethylene resin is 8:2:1:3:86;
[0020] Step 3) Preparation of modified graphite: Put the graphite into a crucible, place it in a muffle furnace for calcination, and under the protection of nitrogen, calcine at 700°C for 3 minutes,...
Embodiment 2
[0025] A processing technique for an insulating plastic material, comprising the steps of:
[0026] Step 1) Crushing and grinding: Add dolomite, perlite and sepiolite to the crusher in a mass ratio of 2:1:1 for crushing, and then grind to obtain a powder with a particle size of 200 mesh, which is material A ;
[0027] Step 2) Preparation of modified resin: Add material A, alumina and serine into the mixing tank in sequence, and stir while heating. When heated to 90°C, add methacryloxypropyltrimethoxysilane to maintain Continue stirring at 90°C for 20 minutes; then cool down to 60°C, add polyethylene resin, and stir for 1 hour to obtain material B; wherein, the material A, alumina, serine, methacryloxypropyltrimethoxysilane and The mass ratio of polyethylene resin is 8:2:1:3:86;
[0028] Step 3) Preparation of modified graphite: put the graphite into a crucible, place it in a muffle furnace for calcination, and under the protection of nitrogen, calcine at 700-800°C for 3 minu...
Embodiment 3
[0033] Plastic material performance test of the present invention:
[0034] The plastic material prepared in embodiment 1-2 is made standard test piece according to test standard, carries out following performance test, and the results are shown in Table 1:
[0035] Table 1
[0036]
[0037] 2. Corrosion resistance test: Take salt solution as an example, soak the test material in 10% sodium chloride solution for 240 hours, and measure the main performance parameters, see Table 2:
[0038] Table 2
[0039] group Flame retardant Thermal conductivity retention rate (%) Tensile strength retention (%) Elongation at break (%) Example 1 V0 99.3 97.2 98.5 Example 2 V0 99.1 96.9 98.8
[0040] 3. High temperature resistance performance test: The performance test of the plastic materials prepared in Examples 1 and 2 under high temperature conditions: the selected temperature is 90°C, and the cable material is placed at this temperature for 240 ho...
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