Method of preparing coiled polybutene pipe with high heat conductivity
A polybutene and coil technology, which is applied in the field of high thermal conductivity polybutene coil and its preparation, can solve the problems of high brittleness of heat-conducting pipes and inability to realize coil processing, and achieves the effects of low price and convenient installation.
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Embodiment 1
[0019] The expanded graphite with a particle size of 50 microns and the N-octyltriethoxysilane coupling agent were added to a high-speed mixer in a mass ratio of 100:1 and mixed for 10 minutes to obtain the treated graphite. The polybutene resin (melt flow rate 0.3 g / 10 min) was mixed with the treated graphite in a high-speed mixer for 8 minutes according to the mass percentage of the polybutene and the treated graphite at 60% and 40%, respectively. The material is added to the twin-screw extruder for mixing, and the temperature of the extruder barrel is controlled at 165°C to 185°C, so that the polybutene resin and graphite are evenly mixed in the twin-screw extruder, and then extruded and cut into pellets to obtain special materials. . The special material is added to the single-screw extruder for melting and extrusion, and the high thermal conductivity polybutene pipe is obtained by die forming and cooling and shaping. ℃~175℃, cooling setting temperature 45℃~60℃. The pipe...
Embodiment 2
[0022] Formula (mass percentage): polybutene: 30%, graphite 70%.
[0023] The expanded graphite with a particle size of 30 microns and the dodecyltrimethoxysilane coupling agent were added to a high-speed mixer in a ratio of 100:1 and mixed for 10 minutes to obtain the treated graphite. According to the mass ratio of polybutene resin: treated graphite is 30%: 70%, polybutene resin (melt flow rate 0.7 g / 10 minutes) and treated graphite are mixed in a high-speed mixer for 8 minutes, and the mixed The material is added to the twin-screw extruder for mixing, and the temperature of the extruder barrel is controlled at 165°C to 185°C, so that the polybutene resin and graphite are evenly mixed in the twin-screw extruder, and then extruded into pellets to obtain high thermal conductivity. Tube special material. Then the special material is added to the single-screw extruder for melting and extrusion, and the high thermal conductivity polybutene pipe is obtained by die forming and coo...
Embodiment 3
[0026] Formula (mass percentage): polybutene: 30%, graphite 70%.
[0027] The expanded graphite with a particle size of 10 microns and monoglyceryl stearate in a ratio of 100:1.5 were added to a high-speed mixer and mixed for 10 minutes to obtain treated graphite. According to the mass ratio of polybutene resin: treated graphite is 30%: 70%, polybutene resin (melt flow rate 1.0 g / 10 minutes) and treated graphite are mixed in a high-speed mixer for 8 minutes, and the mixed The material is added to the twin-screw extruder for mixing, and the temperature of the extruder is controlled at 165°C to 185°C, so that the polybutene resin and graphite are mixed evenly in the twin-screw extruder, and then extruded and cut into pellets to obtain high thermal conductivity pipes. material. Then the special material is added to the single-screw extruder for melting and extrusion, and the high thermal conductivity polybutene pipe is obtained by die forming and cooling and shaping. 160℃~175℃,...
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