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Acid-base-corrosive-resisting polyformaldehyde composite material and preparation method thereof

A technology of composite materials and polyoxymethylene, applied in the field of materials, can solve the problems of polyoxymethylene corrosion and other problems, and achieve the effect of excellent acid and alkali corrosion resistance and excellent acid and alkali corrosion resistance

Inactive Publication Date: 2016-11-16
佛山科悉家居有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, polyoxymethylene is not resistant to acid and strong alkali corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: the preparation of polyoxymethylene composite material

[0019] Raw material weight ratio:

[0020] Polyoxymethylene, 25 parts; Triethanolamine, 35 parts; Polymethylacrylate, 40 parts; Polyvinylpyridine, 25 parts; Ethyl methacrylate, 50 parts; Zinc silicate, 30 parts; Kaolin, 20 parts; Stearin Zinc acid, 15 parts; Calcium molybdate, 10 parts; Aluminum powder, 30 parts; Sulfur, 40 parts; The weight ratio of disodium is 7:1.

[0021] Preparation:

[0022] Step S1, adding polyoxymethylene, triethanolamine, and polymethyl acrylate into a mixer and stirring, and discharging to obtain a premix after stirring evenly; wherein, the stirring speed is 250 rpm, and the stirring time is 15 minutes;

[0023] Step S2, slowly adding polyvinylpyridine and ethyl methacrylate into the premix, and stirring while adding, to obtain a modified premix; wherein, the stirring speed is 700 rpm, and the stirring time is 1.5h;

[0024] Step S3, adding the modified premix to the ma...

Embodiment 2

[0025] Embodiment 2: the preparation of polyoxymethylene composite material

[0026] Raw material weight ratio:

[0027] Polyoxymethylene, 20 parts; Triethanolamine, 30 parts; Polymethylacrylate, 35 parts; Polyvinylpyridine, 20 parts; Ethyl methacrylate, 45 parts; Zinc silicate, 25 parts; Kaolin, 15 parts; Stearin Zinc acid, 10 parts; Calcium molybdate, 5 parts; Aluminum powder, 25 parts; Sulfur, 35 parts; The ratio by weight of disodium is 6:1.

[0028] Preparation:

[0029] Step S1, adding polyoxymethylene, triethanolamine, and polymethyl acrylate into a mixer and stirring, and discharging to obtain a premix after stirring evenly; wherein, the stirring speed is 250 rpm, and the stirring time is 15 minutes;

[0030] Step S2, slowly adding polyvinylpyridine and ethyl methacrylate into the premix, and stirring while adding, to obtain a modified premix; wherein, the stirring speed is 700 rpm, and the stirring time is 1.5h;

[0031] Step S3, adding the modified premix to the ...

Embodiment 3

[0032] Embodiment 3: the preparation of polyoxymethylene composite material

[0033] Raw material weight ratio:

[0034] Polyoxymethylene, 30 parts; Triethanolamine, 40 parts; Polymethylacrylate, 45 parts; Polyvinylpyridine, 30 parts; Ethyl methacrylate, 55 parts; Zinc silicate, 35 parts; Kaolin, 25 parts; Stearin Zinc acid, 20 parts; Calcium molybdate, 15 parts; Aluminum powder, 35 parts; Sulfur, 45 parts; The ratio by weight of disodium is 8:1.

[0035] Preparation:

[0036] Step S1, adding polyoxymethylene, triethanolamine, and polymethyl acrylate into a mixer and stirring, and discharging to obtain a premix after stirring evenly; wherein, the stirring speed is 250 rpm, and the stirring time is 15 minutes;

[0037] Step S2, slowly adding polyvinylpyridine and ethyl methacrylate into the premix, and stirring while adding, to obtain a modified premix; wherein, the stirring speed is 700 rpm, and the stirring time is 1.5h;

[0038] Step S3, adding the modified premix to the...

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PUM

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Abstract

The invention discloses an acid-base-corrosive-resisting polyformaldehyde composite material and a preparation method thereof. The acid-base-corrosive-resisting polyformaldehyde composite material s prepared from, by weight, 20-30 parts of polyformaldehyde, 30-40 parts of triethanolamine, 35-45 parts of polymethyl acrylate, 20-30 parts of polyvinyl pyridine, 45-55 parts of ethyl methacrylate, 25-35 parts of zinc silicate, 15-25 parts of kaolin, 10-20 parts of zinc stearate, 5-15 parts of calcium molybdate, 25-35 parts of aluminum powder, 35-45 parts of sulphur, 14-18 parts of sodium hexametaphosphate and ethylenediaminetetraacetic acid disodium salt, and the part ratio, by weight, of the sodium hexametaphosphate to the ethylenediaminetetraacetic acid disodium salt is (6-8):1. The polyformaldehyde composite material has original advantages of polyformaldehyde and also has the excellent acid-base-corrosive-resisting performance. The technical effects are related to the part ratio, by weight, of the sodium hexametaphosphate to the ethylenediaminetetraacetic acid disodium salt, and when the part ratio, by weight, of the sodium hexametaphosphate to the ethylenediaminetetraacetic acid disodium salt is (6-8):1, the acid-base-corrosive-resisting performance of the polyformaldehyde composite material is optimal.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to an acid and alkali corrosion-resistant polyoxymethylene composite material and a preparation method thereof. Background technique [0002] Polyoxymethylene is a linear polymer with no side chains, high density, and high crystallinity, and has excellent comprehensive properties. Polyoxymethylene is a hard and dense material with smooth and shiny surface, light yellow or white, and can be used for a long time in the temperature range of -40-100 °C. Its wear resistance and self-lubrication are also superior to most engineering plastics, and it has good oil resistance and peroxide resistance. POM has a tensile strength of 70MPa, low water absorption, stable size, and luster, all of which are better than nylon. POM is a highly crystalline resin, the toughest among thermoplastic resins, with high heat resistance, bending strength and fatigue resistance, and excellent wear resista...

Claims

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Application Information

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IPC IPC(8): C08L33/08C08L59/02C08L39/08C08L33/10C08L51/08C08L51/00C08K13/02C08K3/34C08K3/06C08K3/08C08K3/32C08K5/098C08K5/17
CPCC08L33/08C08K2201/003C08L33/10C08L51/003C08L51/08C08L2205/025C08L2205/035C08L59/02C08L39/08C08L51/00C08K13/02C08K3/32C08K5/175
Inventor 王国英
Owner 佛山科悉家居有限公司
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