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Polyformaldehyde resin composite nucleating agent as well as polyformaldehyde resin complex and preparation method thereof

A technology of polyoxymethylene resin and composite nucleating agent, which is applied in the field of polyoxymethylene resin compound and its preparation, can solve the problems of slow crystallization rate and low crystallization temperature, and achieve high crystallization temperature, simple process and good fluidity

Inactive Publication Date: 2014-06-18
CHINA NAT BLUESTAR (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of low crystallization temperature and slow crystallization rate of current polyoxymethylene resins, and provide a composite nucleating agent for polyoxymethylene resins

Method used

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  • Polyformaldehyde resin composite nucleating agent as well as polyformaldehyde resin complex and preparation method thereof
  • Polyformaldehyde resin composite nucleating agent as well as polyformaldehyde resin complex and preparation method thereof
  • Polyformaldehyde resin composite nucleating agent as well as polyformaldehyde resin complex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 98.45% by mass of POM, 0.5% by mass of PA6, 0.05% by mass of nano-silica A200, 0.3% by mass of IRGANOX1010, 0.3% by mass of IRGAFOS168, and 0.4% by mass of melamine. Weigh the raw materials and mix them evenly in a high-speed mixer, then put them into a twin-screw extruder to extrude and granulate. The processing temperature setting is 150°C for the first stage, 170°C for the second stage, 190°C for the third stage, 210°C for the fourth stage, 230°C for the fifth stage, 220°C for the sixth stage, 210°C for the seventh stage, and 190°C for the eighth stage ℃, the ninth section is 175℃, the die head temperature is 170℃; the strands are watered and pelletized.

[0041] Wherein, the feeding speed of the twin-screw extruder is 5 rpm / min, and the screw speed is 400 rpm / min.

Embodiment 2

[0043] 98.12% by mass of POM, 0.8% by mass of PA6, 0.08% by mass of nano-silica A200, 0.3% by mass of IRGANOX1010, 0.3% by mass of IRGAFOS168, and 0.4% by mass of melamine-formaldehyde condensate. Weigh the raw materials and mix them evenly in a high-speed mixer, then put them into a twin-screw extruder to extrude and granulate. The processing temperature setting is 150°C for the first stage, 170°C for the second stage, 190°C for the third stage, 210°C for the fourth stage, 230°C for the fifth stage, 220°C for the sixth stage, 210°C for the seventh stage, and 190°C for the eighth stage ℃, the ninth section is 175℃, the die head temperature is 170℃; the strands are watered and pelletized.

[0044] Wherein, the feeding speed of the twin-screw extruder is 10 rpm / min, and the screw speed is 300 rpm / min.

Embodiment 3

[0046] 97.9% by mass of POM, 1% by mass of PA61, 0.1% by mass of nano-silica A200, 0.3% by mass of IRGANOX1010, 0.3% by mass of IRGAFOS168, and 0.4% by mass of dicyandiamide. Weigh the raw materials and mix them evenly in a high-speed mixer, then put them into a twin-screw extruder to extrude and granulate. The processing temperature setting is 150°C for the first stage, 170°C for the second stage, 190°C for the third stage, 210°C for the fourth stage, 230°C for the fifth stage, 220°C for the sixth stage, 210°C for the seventh stage, and 190°C for the eighth stage ℃, the ninth section is 175℃, the die head temperature is 170℃; the strands are watered and pelletized.

[0047] Wherein, the feeding speed of the twin-screw extruder is 7 rpm / min, and the screw speed is 200 rpm / min.

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Abstract

The invention provides a polyformaldehyde resin composite nucleating agent which is composed of 90-95wt% of polyamide and 5-10wt% of nano silicon dioxide. The invention also provides a polyformaldehyde resin complex comprising the composite nucleating agent and a preparation method thereof. The composite nucleating agent provided by the invention can be used for improving the crystallization properties of polyformaldehyde resin, so as to obtain high crystallization temperature and high crystallization rate as well as maintain or improve the mechanical properties of polyformaldehyde materials. The polyformaldehyde resin complex provided by the invention has the advantages of high crystallization temperature, high crystallization rate, high strength, high rigidity, shock resistance, good fluidity, easiness in processing and shaping, smooth and uniform surface and the like. The preparation method has the advantages of simple and continuous flow, high production efficiency and stable product quality.

Description

technical field [0001] The invention relates to the field of polymer materials and their molding processing, in particular to a polyoxymethylene resin composite nucleating agent, a polyoxymethylene resin compound containing the nucleating agent and a preparation method thereof. Background technique [0002] Since the 1950s and 1960s, when Du Pont's homopolymerized POM and Celanese's copolymerized POM were successfully industrialized in the 1950s and 1960s, POM resin has entered a new stage of rapid development in recent years after a relatively stable period in the early 1990s. Its production capacity and market demand are getting stronger and stronger. Polyoxymethylene resin has unique mechanical properties, high stiffness and hardness, excellent fatigue resistance, oil resistance, chemical resistance, low water absorption, good thermal, electrical properties and wear resistance, and small creep properties, better dimensional stability and chemical stability, it is the mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/02C08L77/02C08L77/06C08K9/04C08K3/36
Inventor 姜立忠杨军忠隋轶巍江枫丹李瑞亢胡衍平
Owner CHINA NAT BLUESTAR (GRP) CO LTD
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