Weatherability type polyformaldehyde material and its preparation method

A polyoxymethylene material, weather-resistant technology, applied in the field of weather-resistant polyoxymethylene material and its preparation, can solve the problems of artificial accelerated weather aging test, ultraviolet light aging test, thermal oxygen aging test and hot water aging test, etc., to achieve easy The effect of industrial production, simple manufacturing method, and easy raw materials

Inactive Publication Date: 2005-05-25
SICHUAN UNIV +1
8 Cites 13 Cited by

AI-Extracted Technical Summary

Problems solved by technology

At present, there are many studies on POM modification, mainly toughening and strengthening modification, but less research on POM weather resistance modification, and the related reports mainly involve modification system formula, such as Japanese patent JP 06279651 A2, world patent WO 9502012 A1, Japanese Patent JP 11343383 A2, Japanese Patent JP 11021416 A2, Japanese Patent JP 09071715 A2, World Patent WO 9709383 A1, Japanese Patent JP 94-105776, German Patent DE 4442123 A1, European Patent EP 655482A2, German Patent DE 4442167 A1, etc. , seldom involve the comparison of the comprehensive mechan...
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Abstract

An anti-weathering polyoxymethylene material is prepared from atoleine and polyoxymethylene through proportioning, surface wetting, adding inorganic particles, optical stabilizer and thermooxidative stabilizer, fusing, pugging, extruding out for granulating, and injection moulding. Its advantage is high resistance to weathering, UV, thermooxidizing and hot water.

Technology Topic

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  • Weatherability type polyformaldehyde material and its preparation method
  • Weatherability type polyformaldehyde material and its preparation method
  • Weatherability type polyformaldehyde material and its preparation method

Examples

  • Experimental program(9)

Example Embodiment

[0035] Example 1
[0036] Add 1000 g of polyoxymethylene to 10 g of liquid paraffin, mix well, then add 3 g of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol, dilauryl thiodipropionate 1.5g, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole 0.5g, succinic acid and 4-hydroxy-2,2,6, 0.5g of 6-tetramethyl-1-piperidinol polymer, fully stirred and mixed evenly, then placed in a twin-screw extruder, melted, blended and extruded at a temperature of 140-220°C, and then pelletized by a pelletizer , to obtain a weather-resistant polyoxymethylene material, which is injection molded at a temperature of 170-190°C.

Example Embodiment

[0037] Example 2
[0038] Add 1000 g of polyoxymethylene to 10 g of liquid paraffin, mix well, then add 30 g of nano-zinc oxide, 3 g of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, dithiodi Dilauryl propionate 1.5g, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole 0.5g, succinic acid and 4-hydroxy-2 , 0.5g of the polymer of 2,6,6-tetramethyl-1-piperidinol, fully stirred and mixed evenly, then placed in a twin-screw extruder, melted and blended at a temperature of 150-210°C, and then The weather-resistant polyoxymethylene material is obtained by cutting pellets with a pelletizer, and injection molding is performed at a temperature of 170-200°C.

Example Embodiment

[0039] Example 3
[0040] Add 1000 g of polyoxymethylene to 20 grams of liquid paraffin, mix well, then add tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol 3 g, dilauryl thiodipropionate 1.5g, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole 0.5g, stir well and mix well, then place in twin-screw extruder , melt blending and extrusion at a temperature of 140-210°C, and then pelletized by a pelletizer to obtain a weather-resistant polyoxymethylene material, which is injection-molded at a temperature of 170-200°C.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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