a packaging box
A packaging box and box body technology, applied in the field of communication equipment, can solve the problems of poor stress bearing capacity of polypropyl ether, high viscosity, difficult processing, low processing efficiency, etc., and achieve the effects of improving production efficiency, not easy to crack, and shortening working hours
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Embodiment 1
[0022] Configure raw materials according to mass ratio; among them, according to mass parts, 100 parts of polypropyl ether, 30 parts of polyamide, 3 parts of dispersant, 2 parts of compatibilizer, 1 part of anti-aging agent, wherein the mass ratio of polypropyl ether is 1.3:1 The modified polypropyl ether modified by maleic anhydride and styrene-butadiene-styrene copolymer, then put the raw materials into the mixer for stirring, the stirring speed is 200 rpm, and the stirring time is 1h; put the stirred raw materials into Into the barrel, the temperature at the front of the barrel is 290°C, the temperature at the middle is 270°C, and the temperature at the back is 250°C. Extrude with a screw at a speed of 80 rpm. Finally, the packaging box is obtained by one-time injection molding of the mold. The forming pressure is 30Mpa.
Embodiment 2
[0024] Configure raw materials according to mass ratio; among them, according to mass parts, 200 parts of polypropyl ether, 50 parts of polyamide, 5 parts of dispersant, 4 parts of compatibilizer, 3 parts of anti-aging agent, wherein polypropyl ether is used with a mass ratio of 1:1 The modified polypropyl ether modified by maleic anhydride and styrene-butadiene-styrene copolymer, then put the raw materials into the mixer for stirring, the stirring speed is 300 rpm, and the stirring time is 2h; put the stirred raw materials into Into the barrel, the temperature at the front of the barrel is 310°C, the temperature at the middle is 290°C, and the temperature at the back is 260°C. Extrude with a screw at a speed of 120 rpm. Finally, the packaging box is obtained by one-time injection molding of the mold. Forming pressure 40Mpa.
Embodiment 3
[0026] Configure raw materials according to mass ratio; among them, according to mass parts, 180 parts of polypropyl ether, 40 parts of polyamide, 4 parts of dispersant, 3 parts of compatibilizer, 2 parts of anti-aging agent, wherein polypropyl ether is used with a mass ratio of 1.2:1 The modified polypropyl ether modified by maleic anhydride and styrene-butadiene-styrene copolymer, then put the raw material and elastomer into the mixer and stir, the stirring speed is 270 rpm, and the stirring time is 1.5h; The final raw material is put into the barrel, the temperature of the front part of the barrel is 300°C, the temperature of the middle part is 280°C, and the temperature of the back part is 255°C. It is extruded with a screw at a speed of 100 rpm, and finally obtained by one-time injection molding of the mold. Packaging box, injection molding pressure 35Mpa.
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