High-impedance high-heat conduction PBT composite material
A composite material, high thermal conductivity technology, applied in the field of functional materials, can solve the problems of reducing the mechanical properties of materials, decreasing the volume resistivity, limited application scope of materials, etc., to achieve the effect of excellent mechanical properties and a wide range of applications
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[0022] Example 1
[0023] The high impedance and high thermal conductivity PBT composite material contains the following parts by weight:
[0024] 55 copies of PBT;
[0025] 0.4 part of antioxidant, consisting of 0.1 part of phenolic antioxidant 2246 and 0.3 part of phosphite antioxidant 168;
[0026] 10 parts of surface-active modified aluminum nitride;
[0027] 5 parts of toughening agent, composed of polypropylene grafted maleic anhydride;
[0028] 30 parts of reinforcing material, composed of alkali-free glass fiber.
[0029] The modification methods of surface active modified aluminum nitride include:
[0030] Dry aluminum nitride and stearic acid with a mass of 0.3% aluminum nitride are mixed uniformly at 100°C, and then acrylic acid with a mass of 1.0% aluminum nitride is added, stirred at 120°C for 15 minutes, and continue to stir and cool to room temperature.
Example Embodiment
[0031] Example 2
[0032] The high impedance and high thermal conductivity PBT composite material contains the following parts by weight:
[0033] 32 copies of PBT;
[0034] 0.2 parts of antioxidant, composed of hindered phenol antioxidant 1010;
[0035] 30 parts of surface-active modified aluminum nitride;
[0036] 8 parts of toughening agent, composed of polypropylene grafted maleic anhydride;
[0037] The reinforcing material is composed of alkali-free glass fiber.
[0038] Mix dry aluminum nitride with 0.7% sodium stearate with the mass of aluminum nitride at 115°C, then add 0.3% aluminum nitride with acrylic acid, stir at 115°C for 15 minutes, continue to stir and cool to room temperature. .
Example Embodiment
[0039] Example 3
[0040] The high impedance and high thermal conductivity PBT composite material contains the following parts by weight:
[0041] 32 copies of PBT;
[0042] 0.4 part of antioxidant, consisting of 0.2 part of phenolic antioxidant 264 (BHT) and 0.2 part of phosphite antioxidant 626;
[0043] Surface activity modified aluminum nitride 40 parts;
[0044] 8 parts of toughening agent, composed of ethylene elastomer grafted with maleic anhydride;
[0045] 20 parts of reinforcing material, composed of alkali-free glass fiber.
[0046] Mix dry aluminum nitride and stearic acid with a mass of 0.5% aluminum nitride at 95℃, then add butyl acrylate with a mass of aluminum nitride 0.3, stir at 120℃ for 13 minutes, continue to stir and cool to room temperature to obtain .
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