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High wear-resistence self-lubricating polyformaldehyde compound and preparation method thereof

A polyoxymethylene compound, self-lubricating technology, applied in the field of polymer materials and their molding processing, can solve the problems of material rigidity, toughness and heat resistance reduction, and achieve stable product quality, improved heat resistance, and simple process. Effect

Inactive Publication Date: 2012-11-14
CHINA NAT BLUESTAR (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of the existing polyoxymethylene wear-resistant compound due to the addition of lubricants that reduce the rigidity, toughness and heat resistance of the material, and provide a high wear-resistant, high self-lubricating property that still maintains rigidity. , toughness and heat resistance polyoxymethylene compound

Method used

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  • High wear-resistence self-lubricating polyformaldehyde compound and preparation method thereof
  • High wear-resistence self-lubricating polyformaldehyde compound and preparation method thereof
  • High wear-resistence self-lubricating polyformaldehyde compound and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0037] According to POM 98 mass %, LDPE 0.65 mass %, SN57020.2 mass %, silicone oil 0.15 mass %, IRGANOX10100.3 mass %, IRGAFOS1680.3 mass %, melamine 0.4 mass %, the raw materials were weighed and mixed uniformly in a high-speed mixer, Put 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, 175°C for the third stage, 175°C for the fourth stage, 175°C for the fifth stage, 175°C for the sixth stage, 175°C for the seventh stage, and 175°C for the eighth stage ℃, the ninth section is 175℃, the die head temperature is 170℃; the strands are watered and pelletized.

Embodiment 2

[0039] According to POM 97 mass %, LDPE 1.3 mass %, SN57020.4 mass %, silicone oil 0.3 mass %, IRGANOX10100.3 mass %, IRGAFOS1680.3 mass %, melamine 0.4 mass %, the raw materials were weighed and mixed uniformly in a high-speed mixer, Put 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, 175°C for the third stage, 175°C for the fourth stage, 175°C for the fifth stage, 175°C for the sixth stage, 175°C for the seventh stage, and 175°C for the eighth stage ℃, the ninth section is 175℃, the die head temperature is 170℃; the strands are watered and pelletized.

Embodiment 3

[0041] According to POM 95% by mass, LDPE 2.6% by mass, SN57020.8% by mass, silicone oil 0.6% by mass, IRGANOX10100.3% by mass, IRGAFOS1680.3% by mass, 0.4% by mass of melamine, the raw materials were weighed and mixed uniformly in a high-speed mixer, Put 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, 175°C for the third stage, 175°C for the fourth stage, 175°C for the fifth stage, 175°C for the sixth stage, 175°C for the seventh stage, and 175°C for the eighth stage ℃, the ninth section is 175℃, the die head temperature is 170℃; the strands are watered and pelletized.

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Abstract

The invention relates to a high wear-resistence self-lubricating polyformaldehyde compound and a preparation method thereof, belonging to the field of high polymer materials and contour machining thereof. The compound comprises polyformaldehyde resin (POM), low density polyethylene (LDPE), nanometer silicon dioxide, silicone oil, antioxidant and a stabilizing agent. The compound is prepared by adopting a high speed premixing scattered primary extrusion process. The invention solves the problems of descending rigidity, toughness and heat resistance that appear in the traditional lubricating agent modified POM compound. The polyformaldehyde compound has the advantages of wear-resistence, self-lubrication, thermal stability, good mechanical property, good mobility, easy machine-shaping, and the like, and is particularly suitable for manufacturing wear components of automobiles, food machinery, papermaking, agricultural machinery, and the like, thereby having wide application prospect.

Description

technical field [0001] The invention relates to the field of polymer materials and their molding processing, in particular to a high wear-resistant self-lubricating polyoxymethylene compound and a preparation method thereof. Background technique [0002] Polyoxymethylene (POM) is an engineering plastic with excellent comprehensive properties. Since DuPont Corporation of the United States first realized industrialization in 1959, polyoxymethylene has quickly developed into an important variety of general-purpose engineering plastics due to its excellent comprehensive performance, low-cost raw materials, convenient processing and molding, and wide application. 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 th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L59/00C08L23/06C08L83/04C08K3/36
Inventor 姜立忠杨军忠邝清林江枫丹李瑞亢胡衍平
Owner CHINA NAT BLUESTAR (GRP) CO LTD
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