High-strength composite insulator
A composite insulator, high-strength technology, used in insulators, electrical components, circuits, etc., can solve the problems of short service life and low strength of composite insulators, and achieve the effect of improving mechanical properties, good mechanical properties, and good chemical stability.
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Embodiment 1
[0030] according to figure 1 with figure 2 , A high-strength composite insulator and a preparation method thereof, comprising a cylindrical core rod 4 and an umbrella skirt 3 arranged outside the core rod; the umbrella skirt is large and small alternately distributed; the bottom of the umbrella skirt is provided with a drip groove 5; The outer surface of the mandrel is provided with a multi-ring annular groove 7; the middle of the upper and lower ends of the mandrel are respectively provided with a threaded groove 11, and the corresponding upper screw 2 and lower screw 8 are respectively provided in the threaded groove; There are two oppositely distributed collars 7 under the lower screw; the undersides of the collars are respectively provided with compression blocks 13, the two compression blocks are parallel to each other, with a gap in the middle, which are connected and fixed by bolts 12; Protrusions 10 are respectively provided in the collar 7.
[0031] One of the collars i...
Embodiment 2
[0037] A core rod for insulators, which is prepared according to the following process:
[0038] Grind the attapulgite to a particle size of 300 mesh, and then mix it with nano silica gel powder and nano silicon carbide at a mass ratio of 2:1:1 to obtain an inorganic material modifier;
[0039] Put the inorganic material modifier, polypropylene resin, phenolic resin, polyimide and diethyl glutarate into the centrifuge according to the mass ratio of 20:100:10:7:2, and centrifuge at 2000rpm for 3 minutes , After mixing uniformly, enter the twin-screw extruder to squeeze into a molten state, cool to pelletize, and obtain modified resin particles;
[0040] Add phthalic anhydride to the reaction kettle, stir and raise the temperature to 80°C, then add maleic anhydride and glass fiber, continue to stir and raise the temperature to 120°C, keep the temperature for 5 minutes, and obtain the auxiliary agent; , The mass ratio of maleic anhydride and glass fiber is 3:2:2;
[0041] Put the modifi...
Embodiment 3
[0054] The performance test of the mandrel prepared in Example 2 of the present invention and Comparative Example 1-2 is shown in Table 1:
[0055] Mark 1
[0056] Group
[0057] As shown in Table 1, the mandrel material prepared by the present invention is modified by adding a variety of inorganic materials and organic materials to polypropylene resin, which improves the mechanical properties such as impact strength and bending strength, and also has better high temperature resistance and fire resistance. , Eliminates potential safety hazards and guarantees production safety; through comparison, it is found that most of the performance is significantly better than that of comparative example 1-2; although the elongation at break is lower than that of comparative example 1, it has fully met the needs of insulators .
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