A kind of flame retardant heat conduction gasket and preparation method thereof
A heat-conducting gasket and heat-conducting powder technology, which is applied in the field of heat-conducting materials, can solve problems such as low filling amount, no flame-retardant function, and high viscosity of the mixture
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Embodiment 1
[0032] Weigh each material in the following mass percentages:
[0033] 5% silicone resin, 5% epoxy vinyl resin, 10% polycarbonate, 4% polyethylene terephthalate and 6% vinyl dimethicone, 2% brominated polyphenylene Ethylene, 2% antimony trioxide, 30% 40μm alumina powder, 28% 1μm alumina powder, 3% 50nm carbon nanotubes.
[0034] Add the above materials into a fusion machine for fusion treatment. The fusion machine rotates at a speed of 500rpm, the fusion time is 0.5h, and the process is water-cooled to obtain a heat-conducting composition;
[0035] Add the above heat-conducting composition and 5% silane coupling agent into the planetary disperser, stir and mix evenly, the rotation speed of the planetary disperser is 5rpm-30rpm, the stirring time is 10min-30min, and then vacuumize to obtain the rubber material;
[0036] After the rubber material is calendered and vulcanized by a calender, it is made into a flame-retardant and heat-conducting gasket;
[0037] Conduct thermal c...
Embodiment 2
[0039] Weigh the following materials in parts by mass:
[0040] 5% silicone resin, 10% epoxy vinyl resin, 10% polycarbonate, 15% polyethylene terephthalate and 15% vinyl dimethicone, 2% brominated polyphenylene Ethylene, 2% antimony trioxide, 30% 90μm zinc oxide powder, 5% 100nm graphene.
[0041]Add the above-mentioned substances into a fusion machine for fusion treatment, the fusion machine speed is 1000rpm, the fusion time is 1.25h, and the process is water-cooled to obtain a heat-conducting composition;
[0042] Add the above heat-conducting composition and 6% silane coupling agent into the planetary disperser, stir and mix evenly, the rotation speed of the planetary disperser is 5rpm-30rpm, the stirring time is 10min-30min, and then vacuumize to obtain the rubber material;
[0043] After the rubber material is calendered and vulcanized by a calender, it is made into a flame-retardant and heat-conducting gasket;
[0044] Conduct thermal conductivity tests on flame retard...
Embodiment 3
[0046] Weigh the following materials in parts by mass:
[0047] 5% silicone resin, 5% epoxy vinyl resin, 5% polycarbonate, 15% polyethylene terephthalate and 15% vinyl dimethicone, 5% brominated polyphenylene Ethylene, 5% antimony trioxide, 30% 90μm aluminum oxide and zinc oxide powder, 3% 500nm carbon fiber powder, 2% 10nm aluminum nitride and boron nitride.
[0048] Add the above materials into a fusion machine for fusion treatment. The fusion machine rotates at 1500 rpm, the fusion time is 2 hours, and the process is water-cooled to obtain a heat-conducting composition;
[0049] Add the above-mentioned heat-conducting composition and 10% silane coupling agent into the planetary disperser, stir and mix evenly, the speed of the planetary disperser is 5rpm-30rpm, the stirring time is 10min-30min, and then vacuumize to obtain the rubber material;
[0050] After the rubber material is calendered and vulcanized by a calender, it is made into a flame-retardant and heat-conducting...
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