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A kind of preparation method of light-stable antistatic polyoxymethylene material

A technology of polyoxymethylene material and light stability, which is applied in the field of preparation of polyoxymethylene materials, can solve the problems of reducing the machinability of plastics, and achieve the effects of improving machinability, permanent antistatic effect, and green and simple synthesis process

Active Publication Date: 2019-06-07
广东盟信塑胶实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to improve the antistatic and light stability of polyoxymethylene materials, and to solve the defects that the addition of light stabilizers and antistatic agents reduces the machinability of plastics, thereby providing a light-stable antistatic polyoxymethylene material. Preparation

Method used

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  • A kind of preparation method of light-stable antistatic polyoxymethylene material

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Effect test

Embodiment 1

[0018] After mixing 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) as a hydrogen bond donor with urea and water in a molar ratio of 1:2:3, at 80 Heat at ℃ for 2 hours in an oil bath to form a uniform, transparent light-stable eutectic reagent with antistatic effect; mix the light-stable eutectic reagent with antistatic effect, carbon black and polyoxymethylene at a ratio of 1:0.3:98.7 After the mass ratio of the extruder is blended evenly, set the temperature of the feeding port to 160°C, the temperature of the extruder zone 1 to 175°C, the temperature of the extruder zone 2 to 180°C, the temperature of the extruder 3-4 zone to 180°C, and the temperature of the extruder zone 1 to 180°C. The temperature in zone 5 is 185, the outlet temperature is 180°C, and the screw speed is 120rpm, the mixture is extruded and granulated in a twin-screw extruder to obtain an antistatic masterbatch, and the obtained antistatic masterbatch is vacuum dried at 75°C Standby for 4 ho...

Embodiment 2

[0020] After mixing 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) as a hydrogen bond donor with urine glycerol and water at a molar ratio of 1:2:3, in Heat at 80°C for 1.5 hours in an oil bath to form a uniform, transparent light-stable eutectic reagent with antistatic effect; combine light-stable eutectic reagent with antistatic effect, polyethylene glycol / quaternary ammonium After the methacrylate copolymer and polyoxymethylene are blended uniformly at a mass ratio of 1:0.2:98.8, set the temperature of the feeding port to 160°C, the temperature of the first zone of the extruder to 175°C, and the temperature of the second zone of the extruder to 180°C , extruder 3-4 zone temperature is 180, extruder 5 zone temperature is 185, discharge port temperature is 180 ℃, after the screw speed is 100rpm, the mixture is extruded and granulated in twin-screw extruder to obtain antistatic Masterbatch, vacuum-dry the obtained antistatic masterbatch at 85°C for 4 hours for ...

Embodiment 3

[0022] After mixing 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) as a hydrogen bond donor with ethylene glycol and water in a molar ratio of 1:2:3, in Heat at 80°C for 1 hour in an oil bath to form a uniform, transparent light-stable eutectic reagent with antistatic effect; mix the light-stable eutectic reagent with antistatic effect, polymetallic fiber and polyoxymethylene at a ratio of 1:0.1 : After the mass ratio of 98.9 is blended evenly, set the temperature of the feed port to 160°C, the temperature of the first zone of the extruder to 175°C, the temperature of the second zone of the extruder to 180°C, and the temperature of the 3-4 zone of the extruder to 180°C. The temperature in the 5th zone of the machine is 185, the outlet temperature is 180 °C, and the screw speed is 150 rpm. Vacuum dry for 4 hours for later use; mix the prepared antistatic masterbatch, long-chain fatty acid, hindered amine antioxidant, and pure polyoxymethylene in a ratio of 40:1:...

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Abstract

The invention discloses a preparation method of a photostable antistatic polyformaldehyde material. In the method, 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxygen free radical (TEMPO), which has photostability and is used as a hydrogen bond donor and a hydrogen bond receptor, is used for preparing a photostable antistatic low-cofusion reagent, which is then mixed with an antistatic agent and polyformaldehyde uniformly, and the mixture is subjected to extruding granulation in a twin-screw extruder to obtain antistatic master batches; the antistatic master batches are uniformly mixed with a thermal stabilizer, an antioxidant and pure polyformaldehyde, and the mixture is subjected to extruding granulation in the twin-screw extruder; the granules finally are dried and injection-moulded to form the photostable antistatic polyformaldehyde material. The photostable antistatic polyformaldehyde material can significantly improve antistatic performance and photostability of a material in the field of electronics industry.

Description

technical field [0001] The invention relates to the preparation of a polyoxymethylene material, in particular to the preparation of a light-stable antistatic polyoxymethylene material. The light-stable antistatic polyoxymethylene material is suitable for the fields of electronic appliances, daily consumer goods, machinery industry and the like. Background technique [0002] POM (polyoxymethylene) is a linear crystalline polymer with regular molecular chain structure, high cohesive energy density, high crystallinity, excellent mechanical properties, high elastic modulus, high stiffness and hardness, tensile strength, It has excellent bending strength, creep resistance and fatigue resistance, and its specific strength and specific rigidity are close to metal. It is the material with the mechanical properties closest to metal in engineering plastics, known as metal plastic. With its excellent performance, POM has been widely used in the fields of automobiles, electronic applia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L59/02C08L71/02C08L33/04C08K13/02C08K3/04C08K5/21C08K5/3432C08K5/09C08K5/053C08K13/04C08K7/06C08J3/22B29B9/06
CPCB29B9/06C08J3/226C08J2359/02C08J2459/02C08K2201/001C08K2201/017C08L59/02C08L2201/04C08L2201/08C08K13/02C08K3/04C08K5/21C08K5/3432C08K5/09C08L71/02C08L33/04C08K5/053C08K13/04C08K7/06
Inventor 周楚群
Owner 广东盟信塑胶实业有限公司
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