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Preparation method of high-temperature-resistant anti-ultraviolet polyformaldehyde engineering plastic

A technology of engineering plastics and polyoxymethylene, applied in the field of materials, can solve the problems of material damage, materials can not be widely used, high temperature resistance and UV resistance, etc., to achieve performance improvement, good economic benefits, and increase the scope of use Effect

Inactive Publication Date: 2021-03-23
南京钧锐科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These problems may cause damage to the material and the material cannot be widely used
Most of the materials currently used are single materials, and the effects of high temperature resistance and UV resistance are average.

Method used

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  • Preparation method of high-temperature-resistant anti-ultraviolet polyformaldehyde engineering plastic
  • Preparation method of high-temperature-resistant anti-ultraviolet polyformaldehyde engineering plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preheat polyoxymethylene at 800°C for 30 minutes in advance, and do not dry the polyoxymethylene before processing; add 70 parts of preheated polyoxymethylene, 8 parts of polybutylene adipamide and polyimide to the high mixer 10 parts were stirred at 45r / min for 2h to make it completely mixed; add 6 parts of phenyl o-hydroxybenzoate and 4 parts of 2,4-dihydroxybenzophenone into the high mixer, and stirred at 45r / min for 30min to make it Mix completely; continue to add 9 parts of 2-hydroxy-4-n-octyloxybenzophenone, 3 parts of distearyl thiodipropionate and 5 parts of dioctyltin dilaurate, stirring at 45 rpm 40min to complete mixing; then add 2 parts of flame retardant, 1 part of accelerator, 1 part of coupling agent, 3 parts of antioxidant, the mass ratio of flame retardant is antimony trioxide: diammonium phosphate: tetrabromobisphenol = 1:1:1 makes, antioxidant is that mass ratio is butyl hydroxyanisole: butylated hydroxy toluene=1: 1 makes, and promotor is promotor DT...

Embodiment 2

[0032] Preheat polyoxymethylene at 800°C for 30 minutes in advance, and do not dry the polyoxymethylene before processing; add 75 parts of preheated polyoxymethylene, 9 parts of polybutylene adipamide and polyimide to the high mixer Stir 11 parts at 45r / min for 2h to make it completely mixed; add 6 parts of phenyl o-hydroxybenzoate and 5 parts of 2,4-dihydroxybenzophenone into the high mixer, and stir at 45r / min for 30min to make it Mix completely; continue to add 11 parts of 2-hydroxy-4-n-octyloxybenzophenone, 3 parts of distearyl thiodipropionate and 5 parts of dioctyltin dilaurate, stirring at 45 rpm 40min to complete mixing; then add 3 parts of flame retardant, 2 parts of accelerator, 3 parts of coupling agent, 5 parts of antioxidant, the mass ratio of flame retardant is antimony trioxide: diammonium phosphate: tetrabromobisphenol = 1:1:1 makes, antioxidant is that mass ratio is butyl hydroxyanisole: butylated hydroxy toluene=1: 1 makes, and promotor is promotor DT, and co...

Embodiment 3

[0034] Preheat polyoxymethylene at 800°C for 30 minutes in advance, and do not dry the polyoxymethylene before processing; add 80 parts of preheated polyoxymethylene, 11 parts of polybutylene adipamide and polyimide to the high mixer 13 parts were stirred at 45r / min for 2h to make it completely mixed; 7 parts of phenyl phthalate and 7 parts of 2,4-dihydroxybenzophenone were added to the high mixer, and stirred at 45r / min for 30min to make it Mix completely; continue to add 12 parts of 2-hydroxy-4-n-octyloxybenzophenone, 4 parts of distearyl thiodipropionate and 6 parts of dioctyltin dilaurate, stirring at 45 rpm 40min to complete mixing; then add 4 parts of flame retardant, 3 parts of accelerator, 5 parts of coupling agent, 6 parts of antioxidant, the mass ratio of flame retardant is antimony trioxide: diammonium phosphate: tetrabromobisphenol = 1:1:1 is obtained, antioxidant is that mass ratio is butyl hydroxyanisole: butylated hydroxy toluene=1:1 makes, accelerator is accele...

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Abstract

The invention provides a preparation method of high-temperature-resistant ultraviolet-resistant polyformaldehyde engineering plastic, which comprises the following steps: preheating, high-speed mixing1, high-speed mixing 2, high-speed mixing 3 and molding. The engineering plastic prepared by the method has favorable high-temperature resistance and ultraviolet resistance.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a method for preparing high-temperature-resistant and ultraviolet-resistant polyoxymethylene engineering plastics. Background technique [0002] At present, the use and application of engineering plastics are very extensive. Engineering plastics can be used as engineering materials and plastics that replace metal manufacturing machine parts. And it has excellent comprehensive performance, high rigidity, small creep, high mechanical strength, good heat resistance, good electrical insulation, can be used in harsh chemical and physical environments for a long time, and can replace metals as engineering structural materials , but the price is more expensive and the output is smaller. Polyoxymethylene engineering plastics have good dimensional stability, low price, high surface hardness and compact surface, can withstand general chemicals and solvents, and have good electrical prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/00C08L77/06C08L79/08C08K13/02C08K5/134C08K5/132C08K5/372C08K5/57C08K3/22C08K3/32C08K5/136
CPCC08K2003/322C08L59/00C08L2201/08C08L2205/03C08L77/06C08L79/08C08K13/02C08K5/1345C08K5/132C08K5/372C08K5/57C08K3/2279C08K3/32C08K5/136
Inventor 张丹武海微苏青青薛哲彬赵启航倪永浩余光华
Owner 南京钧锐科技有限公司
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