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A kind of preparation method of carbon nanotubes to improve the flame retardancy of water-based coatings and adhesives

A carbon nanotube modification, water-based coating technology, used in fire-resistant coatings, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of flame retardancy and poor abrasion resistance, and achieve strong flame retardancy and adhesion, improve the effect of film yellowing

Active Publication Date: 2016-05-11
上海汉司实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, acrylate resins have poor flame retardancy and wear resistance, and the emulsion film is slightly yellow, so it needs to be modified to protect the safety of life and property

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] (1) Add 30mg of double-walled carbon nanotubes and 30ml of 72wt% perchloric acid to a 250ml three-neck flask equipped with a stirrer, thermometer and condenser tube, heat and stir at 30°C for 12h to complete the intercalation and swelling process, and the above Slowly add the carbon nanotube / perchloric acid mixture into 10ml of 65wt% nitric acid, react at 70°C for 1h to complete the selective oxidation process, and finally dilute to 200ml with distilled water and filter to prepare a spontaneously dispersible double-walled carbon nanotube After spontaneous dispersion in water, 30% of the carbon nanotubes exist in a single state, and the rest are carbon nanotube bundles. The average diameter of a single carbon nanotube is 1.7-8nm, and 85% of the carbon nanotube bundles have a diameter less than 8nm;

[0028] (2) Add 1 g of spontaneously dispersible double-walled carbon nanotubes prepared in step (1), 1 g of expandable graphite, and 3-aminopropyltrimethoxysilane into a 50 m...

example 2

[0034](1) Add 30mg of double-walled carbon nanotubes and 30ml of 72wt% perchloric acid to a 250ml three-neck flask equipped with a stirrer, thermometer and condenser, heat and stir at 30°C for 12h to complete the intercalation and swelling process, and The above carbon nanotube / perchloric acid mixture is slowly added to 10ml of 65wt% nitric acid, reacted at 70°C for 1h to complete the selective oxidation process, and finally diluted to 200ml with distilled water and filtered to prepare a spontaneously dispersible double-walled carbon Nanotubes, after spontaneous dispersion in water, 30% of the carbon nanotubes exist in a single state, and the rest are carbon nanotube bundles. The average diameter of a single carbon nanotube is 1.7~8nm, and 85% of the carbon nanotube bundles have a diameter of less than 8nm ;

[0035] (2) Add 1 g of spontaneously dispersible double-walled carbon nanotubes prepared in step (1), 1.5 g of expandable graphite, 2-[(2-aminoethyl ) Amino] Zirconium E...

example 3

[0041] (1) Add 30mg of double-walled carbon nanotubes and 30ml of 72wt% perchloric acid to a 250ml three-neck flask equipped with a stirrer, thermometer and condenser, heat and stir at 30°C for 12h to complete the intercalation and swelling process, and The above carbon nanotube / perchloric acid mixture is slowly added to 10ml of 65wt% nitric acid, reacted at 70°C for 1h to complete the selective oxidation process, and finally diluted to 200ml with distilled water and filtered to prepare a spontaneously dispersible double-walled carbon Nanotubes, after spontaneous dispersion in water, 30% of the carbon nanotubes exist in a single state, and the rest are carbon nanotube bundles. The average diameter of a single carbon nanotube is 1.7~8nm, and 85% of the carbon nanotube bundles have a diameter of less than 8nm ;

[0042] (2) Add 1 g of spontaneously dispersible double-walled carbon nanotubes prepared in step (1), 1.25 g of expandable graphite, ethylene glycol trimethoxysilylpropy...

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Abstract

The invention relates to a preparation method for improving the flame retardance of water-based paint and adhesive by virtue of carbon nanotubes. The preparation method comprises the following steps: adding water, an emulsifier and O-methyl-O-(2-isopropoxy carboxyl phenyl) sulfo-phosphamide into a reaction container, heating and stirring for 40 minutes, adding a monomer A, emulsifying, heating to be 90 DEG C, dripping an initiator, reacting for 1 hour, further adding 5-carboxyl amyl-triphenyl phosphorus bromide and 6-maleimide hexanoic acid, and stirring and reacting for 2 hours, thereby obtaining nuclear-layer emulsion; simultaneously dripping a monomer B and an initiator into the nuclear-layer emulsion, stirring and reacting for 40 minutes at 95 DEG C, adding a coupling agent grafted double-walled carbon nanotube solution and a crosslinking agent, reacting for 2-3 hours at 75-85 DEG C, reducing the temperature to be 50 DEG C, adding an emulsifier, reacting for 70 minutes, adding sodium hydrogen sulfite and 2,4-diamido-6-hydroxy pyrimidine, reacting for 1 hour at 80 DEG C, and adding ammonia water to adjust the pH value to be 7-8, thereby obtaining the flame-retardance water-based paint and adhesive. By adopting the preparation method, both the flame retardance of acrylate resin is greatly improved, and the defect that acrylate resin emulsion is yellowish after being formed into a film is alleviated.

Description

technical field [0001] The invention relates to a preparation method of a water-based paint and an adhesive, in particular to a preparation method for improving the flame retardancy of a water-based paint and an adhesive by carbon nanotubes. Background technique [0002] Coatings and paints sprayed on the surface of internal and external walls, furniture, and metal appliances are in direct or indirect contact with human beings all the time. Toxic and harmful paints have always threatened people's health. [0003] The largest market for acrylic resin coatings is car paint. In addition, it is widely used in light industry, household appliances, metal household appliances, aluminum products, coil industry, instrumentation, construction, textiles, plastic products, wood products, papermaking and other industries. application. Acrylic resin coatings are developing in the direction of water-based, multi-functional and high-performance. [0004] Adhesive bonding (bonding, bonding...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/08C09D133/12C09D7/12C09D5/18C09J133/08C09J133/12C09J11/04C08F220/18C08F220/14C08F220/28C08F212/08C08F2/44
Inventor 朱蕾罗声王亚茜宋丽夏雪影
Owner 上海汉司实业有限公司