Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of intumescent phosphazene fireproof coating

A fire-resistant coating, intumescent technology, applied in the field of flame retardant, can solve the problems of low flame retardant efficiency, large additive dosage, etc., and achieve the effects of low toxic gas, mild reaction conditions, and low halogen content

Active Publication Date: 2021-03-30
STATE GRID FUJIAN ELECTRIC POWER CO LTD +1
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing an intumescent phosphazene fire retardant coating for the problems of large amount of additives and low flame retardant efficiency in the current intumescent fire retardant coatings

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of intumescent phosphazene fireproof coating
  • A kind of preparation method of intumescent phosphazene fireproof coating
  • A kind of preparation method of intumescent phosphazene fireproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In this example, the molar ratio of raw materials hexachlorocyclotriphosphazene (HCCP) and 4,4-dihydroxydiphenylsulfone (BPS) is 1:1.5.

[0033] A preparation method for intumescent phosphazene fireproof coating, comprising the following steps:

[0034] (1) Preparation of phosphazene microspheres (PZS): Dissolve 10g (39.9mmol) of 4,4-dihydroxydiphenylsulfone (BPS) in a flask filled with 600mL of acetonitrile solution, stir at room temperature until completely dissolved, Then 9.25 g (26.6 mmol) of hexachlorocyclotriphosphazene (HCCP) was added and stirred until completely dissolved. Then drop 5.28g (51.84mmol) of triethylamine (TEA) into the flask, react in a 40KHZ, 5400W ultrasonic instrument for 15min, then centrifuge and wash with 13.5mol / L acetone for 3 times, dry for later use, and obtain phosphorus Nitrile microspheres (PZS). The reaction formula is as follows:

[0035]

[0036] (2) Preparation of modified phosphazene microspheres (PZS-g-PMo): Disperse 69.43 ...

Embodiment 2

[0041] In this example, the molar ratio of raw materials hexachlorocyclotriphosphazene (HCCP) and 4,4-dihydroxydiphenylsulfone (BPS) is 1:2.0.

[0042] A preparation method for intumescent phosphazene fireproof coating, comprising the following steps:

[0043] (1) Preparation of phosphazene microspheres (PZS): Dissolve 10 g (39.9 mmol) of 4,4-dihydroxydiphenyl sulfone (BPS) in a flask filled with 600 mL of acetonitrile solution, stir until completely dissolved at room temperature, Then 6.94 g (20 mmol) of hexachlorocyclotriphosphazene (HCCP) was added and stirred until completely dissolved. Then drop 5.28g (51.84mmol) of triethylamine (TEA) into the flask, react in a 40KHZ, 5400W ultrasonic instrument for 15min, then centrifuge and wash with 13.5mol / L acetone for 3 times, dry for later use, and obtain phosphorus Nitrile microspheres (PZS). The reaction formula is as follows:

[0044]

[0045] (2) Preparation of modified phosphazene microspheres (PZS-g-PMo): Disperse 69.43g...

Embodiment 3

[0050] In this example, the molar ratio of raw materials hexachlorocyclotriphosphazene (HCCP) and 4,4-dihydroxydiphenylsulfone (BPS) is 1:1.8.

[0051] A preparation method for intumescent phosphazene fireproof coating, comprising the following steps:

[0052] (1) Preparation of phosphazene microspheres (PZS): Dissolve 10g (39.9mmol) of 4,4-dihydroxydiphenylsulfone (BPS) in a flask filled with 600mL of acetonitrile solution, stir at room temperature until completely dissolved, Then 7.71 g (22.17 mmol) of hexachlorocyclotriphosphazene (HCCP) was added and stirred until completely dissolved. Then drop 5.28g (51.84mmol) of triethylamine (TEA) into the flask, react in a 40KHZ, 5400W ultrasonic instrument for 15min, then centrifuge and wash with 13.5mol / L acetone for 3 times, dry for later use, and obtain phosphorus Nitrile microspheres (PZS). The reaction formula is as follows:

[0053]

[0054] (2) Preparation of modified phosphazene microspheres (PZS-g-PMo): Disperse 69.43...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a preparation method of expanded phosphazene fireproof coating, and belongs to the field of flame-retardant coating. The preparation method comprises the following steps: preparing phosphazene microspheres (PZS) from hexachlorocyclotriphosphazene and 4,4-dihydroxydiphenyl sulfone as raw materials, then performing a reaction on 1-methylimidazole, phosphomolybdic acid and thePZS microspheres, grafting imidazole phosphomolybdate onto the PZS, and then compounding a grafted product with acrylic resin according to a molar ratio of 1:1 to obtain the expanded phosphazene fireproof coating. The macromolecular phosphazene microspheres are used as a charcoal-forming catalyst and microsphere-grafted phosphomolybdate is used as a synergist for the first time, so that the flameretardance is greatly improved; the PZS catalyst can be used as a charcoal-forming core in the combustion process and can produce some non-combustible gases to achieve a gas-phase flame-retardant effect during thermal decomposition, and the PZS-grafted catalyst can also be catalyzed into charcoal in situ, so that the charcoal-forming efficiency is improved, the number of charcoal layers is increased, the compactness of the charcoal layers is improved, the stability of the charcoal layers is improved, and the flame retardance of a composite material is improved.

Description

technical field [0001] The invention belongs to the technical field of flame retardancy, and in particular relates to a preparation method of an intumescent phosphazene fireproof coating. Background technique [0002] Relevant statistics in recent years show that electrical fires account for the largest proportion of all types of fire accidents in the country, and cause the largest number of fire accidents above the larger level. From 2008 to 2016, electrical fires were the most direct cause of serious and extraordinarily serious fires. Fires accounted for more than 30% of the total number of statistical fires. Among them, fires caused by cable ignition and flame spread due to electrical reasons such as short circuit of wires, aging of wires and cables, overload and electrical equipment failure account for more than 30% of the total number of fires, and there is an increasing trend year by year. A series of fire cases show that once such a fire accident occurs, it will not ...

Claims

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/10C09D185/02C09D5/18C08G77/42C08G79/04
Inventor 蔡建宾林德源夏晓健陈云翔洪毅成韩纪层严康骅李熙翁孙贤万芯瑗侯琳熙肖龙强
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD