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A kind of flame retardant and antistatic bifunctional polyoxymethylene resin and preparation method thereof

A polyoxymethylene resin, flame-retardant and antistatic technology, applied in the field of polyoxymethylene resin and its preparation, can solve the problems of single performance of flame-retardant polyoxymethylene and antistatic polyoxymethylene, and achieve good thermal stability and mechanical properties.

Inactive Publication Date: 2017-12-12
河南能源集团研究总院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the performance of flame retardant polyoxymethylene and antistatic polyoxymethylene in the prior art is single and cannot meet the technical defects of some special application fields. Polyoxymethylene resin and its preparation method

Method used

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  • A kind of flame retardant and antistatic bifunctional polyoxymethylene resin and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Mix 70.7% POM, 10% red phosphorus microcapsules, 2% melamine, 6% phenolic resin, 4% dipentaerythritol, 6% metal fiber, 0.3% antioxidant 245 and 1.0% lithium stearate in a high-speed mixer Pre-mix for 10 minutes, then melt-extrude and granulate in a twin-screw extruder at 165-175°C, and then dry the extruded granules at 105°C, and then inject them into an injection molding machine.

Embodiment 2

[0026] Premix 67.2% POM by weight, 10% red phosphorus microcapsules, 6% melamine, 4% phenolic resin, 6% pentaerythritol, 6% metal fiber, 0.3% antioxidant 245 and 0.5% polyethylene wax on a high-speed mixer 10 minutes, then extruded in twin-screw

[0027] Melt extrusion and granulation at 165-175°C in the machine. After drying the extruded pellets at 105°C, they were injection molded on an injection molding machine.

Embodiment 3

[0029] The weight ratio of 71.2% POM, 12% red phosphorus microcapsules, 2% dicyandiamide, 2% phenolic resin, 6% dipentaerythritol, 2% TPU, 4% metal fiber, 0.3% antioxidant 245 and 0.5% stearin Lithium acid is premixed on a high-speed mixer for 10 minutes, and then melted and extruded at 165-175°C to pelletize in a twin-screw extruder. After the extruded pellets were dried at 105°C, they were injection molded on an injection molding machine.

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Abstract

The invention relates to a polyoxymethylene resin with flame-retardant and antistatic functions and a preparation method thereof, which is made of the following raw materials: polyoxymethylene (POM) 50-80%, microcapsule red phosphorus flame retardant 6 ‑20%, char forming agent 3‑25%, aldehyde absorbent 1‑10%, antistatic agent 1‑10%, processing aid 0.1‑3.0% and antioxidant 0.1‑1.0%. First, pre-mix POM, flame retardant, char-forming agent, aldehyde absorbent, antistatic agent, processing aid and antioxidant in a high-speed mixer for 3-15 minutes, and then put the mixed raw materials into twin-screw extrusion Melt extrusion granulation in machine, injection molding. The polyoxymethylene composite material prepared by the invention has both flame-retardant and antistatic properties, good thermal stability and mechanical properties, and can meet the requirements of various application environments such as polymer products used in underground coal mines.

Description

technical field [0001] The invention relates to a polyoxymethylene resin material, in particular to a polyoxymethylene resin capable of simultaneously improving its flame retardancy and antistatic performance and a preparation method thereof. Background technique [0002] Polyoxymethylene (POM) is a high-density, highly crystalline, linear polymer without side groups. The molecular structure of POM is extremely regular, and its crystallinity is very high, which makes its physical properties very excellent. It has high elastic modulus, hardness and rigidity, good creep resistance, fatigue resistance and friction resistance, and also has self-lubricating characteristics. Its specific rigidity and specific strength are close to those of metals, with excellent tensile strength, bending strength and fatigue resistance, small friction coefficient and high dimensional stability. It can be used as a substitute for some metal materials and is known as "super steel". , It is often u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L59/00C08L61/06C08L23/06C08L75/04C08K13/06C08K9/10C08K3/02C08K3/08C08K5/3492C08K5/053C08K7/06C08K5/098C08K5/13
Inventor 房晓敏付瑶丁涛吴保章徐元清魏灵朝龚春红田一政张璞赵利军张延兵曹志魁吴俊威宋灿金璐李建通任艳蓉
Owner 河南能源集团研究总院有限公司