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High impact resistant polyformaldehyde compound and preparation method thereof

A polyoxymethylene compound, impact-resistant technology, applied in the treatment of dyed polymer organic compounds, fibrous fillers, etc., can solve the problems of material rigidity, heat resistance and wear resistance, and achieve stable product quality and fluidity. Good, simple process

Inactive Publication Date: 2010-12-22
CHINA NAT BLUESTAR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of the existing polyoxymethylene impact-resistant composites due to the reduction of material rigidity, heat resistance and wear resistance due to the addition of elastomers, to provide a high-strength, impact-resistant, heat-resistant, and has Polyoxymethylene compound with wear-resistant and high self-lubricating properties

Method used

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  • High impact resistant polyformaldehyde compound and preparation method thereof
  • High impact resistant polyformaldehyde compound and preparation method thereof
  • High impact resistant polyformaldehyde compound and preparation method thereof

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Effect test

Embodiment 1

[0038] According to low density polyethylene 69.7 mass %, SN570230 mass %, 2,5-dimethyl-2,5 di-tert-butyl peroxy 0.3 mass %, the raw materials were weighed and mixed uniformly in a high-speed mixer, and put into a twin-screw extruder Extrude and granulate. The processing temperature setting is 160°C for the first stage, 180°C for the second stage, 180°C for the third stage, 180°C for the fourth stage, 180°C for the fifth stage, 180°C for the sixth stage, 180°C for the seventh stage, and 180°C for the eighth stage ℃, the ninth section 180 ℃, the die head temperature 175 ℃; the strands were passed through water and cut into pellets; low-density polyethylene grafted nano-silica was obtained, and the grafting rate of low-density polyethylene was 65%.

Embodiment 2

[0040] 1 mass % of low-density polyethylene grafted nano silicon dioxide obtained by POM 98 mass %, embodiment 1, IRGANOX10100.3 mass %, IRGAFOS1680.3 mass %, melamine 0.4 mass % take raw materials by weighing and mix in high-speed mixer After uniformity, put it 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

[0042] 2 mass % of low-density polyethylene grafted nano silicon dioxide obtained by POM 97 mass %, embodiment 1, 0.3 mass % of IRGANOX1010, 0.3 mass % of IRGAFOS168, 0.4 mass % of melamine Take raw materials by weighing after mixing homogeneously in a high-speed mixer , 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 impact resistant polyformaldehyde compound and a preparation method thereof. The compound is prepared from the following components in part by weight: 80 to 99 parts of polyformaldehyde resin, more than 0 and less than or equal to 20 parts of low-density polyethylene grafted nano silicon dioxide, 0.2 to 1 part of antioxidant and 0.2 to 1 part of stabilizer. The compound solves the problems of decline of rigidity, heat resistance and abrasion resistance in a common elastomer toughened and modified POM compound. The obtained polyformaldehyde compound has the advantages of high strength, high rigidity, impact resistance, abrasion resistance, self lubrication, thermal stability, good liquidity, easy processing and molding and the like, is quite suitable for manufacturing abrasion-resistant parts of automobiles, food machinery, papermaking, agricultural machinery and the like, and has broad application prospect.

Description

technical field [0001] The invention relates to the field of polymer materials and their molding processing, in particular to a high-strength impact-resistant 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 the mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/02C08L59/04C08L61/28C08K9/04C08K3/36C08K5/3492C08K5/31C09C1/28C09C3/10
Inventor 姜立忠杨军忠邝清林江枫丹隋轶巍李瑞亢胡衍平
Owner CHINA NAT BLUESTAR GRP CO LTD
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