Method for wet oxidation separation of glass fiber and epoxy resin in WPCB non-metallic powder
A technology of glass fiber and non-metal powder, which is applied in the field of wet oxidation separation of glass fiber and epoxy resin in WPCB non-metal powder, which can solve the problems of polluting the environment, destroying the structure of crosslinking agent, and difficult to handle non-metal powder, and achieves The reaction is easy to operate, realizes resource utilization, and is suitable for batch processing
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Embodiment 1
[0022] Sieve WPCB non-metallic powder to obtain WPCB non-metallic particles with a particle size between 1 and 4mm, soak in 10% dilute nitric acid solution in a water bath at 70°C for 6 hours, then filter, and vacuum-dry the filter residue in an oven at 105°C 4h. Weigh the mass after drying as m 1 (2g) non-metallic powder, 48g acetic acid (expanding agent), 19.2g ZnCl 2 (Oxidant) mixed, placed in a 100ml hydrothermal kettle lining, put into an oven for reaction, the oven temperature was set at 190°C, and the reaction time was 20h. After the reaction is finished, the product is successively filtered with ethyl acetate and water to obtain the gray-brown non-metallic powder residue mass m 2 (1.2474g); The filtrate is extracted by ethyl acetate, and the extract is concentrated under reduced pressure by a rotary evaporator to obtain a brown epoxy resin solid mass m 3 (0.5526g), the epoxy resin that reclaims obtains is through Fourier transform infrared analyzer (potassium bromid...
Embodiment 2
[0034] Sieve WPCB non-metallic powder to obtain WPCB non-metallic particles with a particle size between 1 and 4mm, soak in 10% dilute nitric acid solution in a water bath at 70°C for 6 hours, then filter, and vacuum-dry the filter residue in an oven at 105°C 4h. Weigh the mass after drying as m 1 (2g) of non-metallic powder, 48g ethanol (swelling agent) and 19.2g ZnCl 2 (Oxidant) mixed, placed in a 100ml hydrothermal kettle lining, put into an oven for reaction, the oven temperature was set at 190°C, and the reaction time was 20h. After the reaction is finished, the product is successively filtered with ethyl acetate and water to obtain the gray-brown non-metallic powder residue mass m 2 (1.2730g); The filtrate is extracted by dichloromethane, and the extract is concentrated under reduced pressure by a rotary evaporator to obtain a brown epoxy resin solid mass m 3 (0.5270g), the epoxy resin that reclaims obtains is through Fourier transform infrared analyzer (potassium bro...
Embodiment 3
[0038] Sieve WPCB non-metallic powder to obtain WPCB non-metallic particles with a particle size between 1 and 4mm, soak in 10% dilute nitric acid solution in a water bath at 70°C for 6 hours, then filter, and vacuum-dry the filter residue in an oven at 105°C 4h. Weigh the mass after drying as m 1 (2g) of non-metallic powder, 40g acetic acid (expanding agent) and 8g CuCl 2 (Oxidant) mixed, placed in a 100ml hydrothermal kettle lining, put into an oven for reaction, the oven temperature is set at 220°C, and the reaction time is 20h. After the reaction is finished, the product is successively filtered with ethyl acetate and water to obtain the gray-brown non-metallic powder residue mass m 2 (1.3262g); The filtrate is extracted by ethyl acetate, and the extract is concentrated under reduced pressure by a rotary evaporator to obtain a brown epoxy resin solid mass m 3 (0.4378g), the epoxy resin that reclaims obtains is through Fourier transform infrared analyzer (potassium bromi...
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