A kind of antistatic nylon 6 and preparation method thereof
An antistatic and nylon technology, which is applied in the field of antistatic nylon 6 and its preparation, can solve the problems of reducing the mechanical properties of products and the impact of antistatic properties, and achieve the improvement of elongation at break and notched impact strength, simple process and obvious effect Effect
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Embodiment 1
[0047] Prepare antistatic nylon 6, the steps are as follows:
[0048]1) Add 100g of water into the reactor, start stirring, and add 200g of caprolactam into the reactor, fill the kettle with high-purity nitrogen, and replace the air in the kettle. Gradually and slowly raise the temperature to 220° C., maintain the pressure at 0.8 MPa, and keep it warm for 2 hours. Gradually lower the pressure to normal pressure, lower the temperature to 110°C, keep it warm for 30 minutes, and remove water through a water separator to obtain solution A.
[0049] 2) Add the solution A and 600g of PEG600 obtained in the first step into the reaction kettle, start stirring, and replace the air in the kettle with high-purity nitrogen, then start to raise the temperature. When the temperature rises to 98°C, add 2.5g of concentrated sulfuric acid, and continue to raise the temperature Reaction at normal pressure for 2 hours at 120°C. During the reaction, part of the water was discharged through the c...
Embodiment 2
[0052] Prepare antistatic nylon 6, the steps are as follows:
[0053] 1) Add 100g of water into the reactor, start stirring, and add 200g of caprolactam into the reactor, fill the kettle with high-purity nitrogen, and replace the air in the kettle. Gradually and slowly raise the temperature to 230° C., maintain the pressure at 1.0 MPa, and keep it warm for 4 hours. Gradually lower the pressure to normal pressure, lower the temperature to 120°C, keep it warm for 30 minutes, and remove water through a water separator to obtain solution A.
[0054] 2) Add the solution A and 600g of PEG600 obtained in the first step into the reaction kettle, start stirring, and replace the air in the kettle with high-purity nitrogen, then start to raise the temperature. When the temperature rises to 90°C, add 2.5g of concentrated sulfuric acid, and continue to raise the temperature To 100°C, react at normal pressure for 4 hours. During the reaction, discharge part of the water through the condens...
Embodiment 3
[0057] Prepare antistatic nylon 6, the steps are as follows:
[0058] 1) Add 100g of water into the reactor, start stirring, and add 200g of caprolactam into the reactor, fill the kettle with high-purity nitrogen, and replace the air in the kettle. Gradually and slowly raise the temperature to 210° C., maintain the pressure at 1.1 MPa, and keep the reaction for 2 hours. Gradually lower the pressure to normal pressure, lower the temperature to 130°C, keep it warm for 30 minutes, and remove water through a water separator to obtain solution A.
[0059] 2) Add the solution A and 600g of PEG600 obtained in the first step into the reaction kettle, start stirring, and replace the air in the kettle with high-purity nitrogen, then start to raise the temperature. When the temperature rises to 96°C, add 2.5g of concentrated sulfuric acid, and continue to raise the temperature To 110°C, react at normal pressure for 3 hours. During the reaction, discharge part of the water through the co...
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