A kind of preparation method of transparent flame retardant PC composite material

Abstract

The invention discloses a preparation method of a transparent flame-retardant PC composite material, which belongs to the field of polymer material preparation. The solution realizes that the material in a ventilating discharge cylinder is dried by heat generation by a heater, and at the same time, the flow of hot air drives the guide fan blades Rotate so that it drives the cam to rotate, the cam squeezes the percussion hammer at the protruding end of the rotation and taps the breathable discharge cylinder to vibrate, while the breathable discharge cylinder on the other side is affected by its vibration frequency and starts to vibrate slowly with it. After the vibration is weakened and disappears, the convex end of the cam rotates to the knock hammer on the other side, so that the knocking will drive the ventilation and discharging cylinder on the other side to vibrate, and realize again The same frequency resonance enhances the drying effect, and in the vibration of the ventilating and discharging cylinder, the movable rod also moves with it, and is attracted and fixed by the arc-shaped magnet sheet, which moves in the opposite direction to the ventilating and discharging cylinder, making the toggle plate Toggle the movement of the material to allow the material to be fully heated and dried.

Description

technical field [0001] The invention relates to the field of polymer material preparation, and more particularly, to a preparation method of a transparent flame-retardant PC composite material. Background technique [0002] Polycarbonate (PC) is an engineering plastic with excellent performance, which has the advantages of high transparency, good dimensional stability, creep resistance and low water absorption, especially in transparent plastics, with high impact strength and toughness, but PC It has high melt viscosity, poor fluidity, poor wear resistance, especially poor solvent resistance, easy stress cracking, cracking and swelling in solvent environment, and high processing temperature, which limits the application range of PC, polyethylene terephthalate Ethylene glycol formate-1,4-cyclohexanedimethanol (PETG) is an environmentally friendly new transparent material with good solvent resistance, no whitening after bending, good fluidity, high transparency and excellent ...

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Problems solved by technology

[0002] Polycarbonate (PC) is an engineering plastic with excellent performance, which has the advantages of high transparency, good dimensional stability, creep resistance and low water absorption, especially among transparent plastics, it has high impact strength and toughness, but PC It has high melt viscosity, poor fluidity, poor wear resistance, especially poor solvent resistance, and is prone to stress cracking. It is prone to cracking and swelling in a solvent environment, and the processing temperature is high, which limits the application range of PC. Ethylene glycol formate-1,4-cyclohexanedimethanol (PETG) is a new environmentally friendly transparent material with good solvent resistance, no whitening when bent, good fluidity, high transparency, excellent Siloxane-polycarbonate block copolymer (Si-PC) is an environmentally friendly new transparent material with good solvent resistance and abrasion resistance. After mixing and manufacturing, a transparent flame-retardant PC composite material with excellent comprehensive properties such as high transparency, flame retardancy, mechanical properties, solvent resistance, wear resistance, and low-temperature injection molding can be obtained.

[0003] In the preparation process of transparent flame-retardant PC composite materials, it needs to be dried, but the drying device in the prior art is not enough to dry, which reduces the drying effect of transparent flame-retardant PC composite materials, prolongs the drying time, and improves the use. cost

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