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A kind of preparation method of f220 resin

A technology of resin and sodium sulfide, applied in anti-corrosion coatings, fire-retardant coatings and other directions, can solve the problems of easy peeling or falling off in vacuum environment, low adhesion strength of finished products, complicated preparation process, etc., and achieves simple and easy preparation method and high yield of finished products. , The effect of low preparation cost

Active Publication Date: 2018-04-24
重庆卓之惠化工技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, fluororesins mainly have technical problems such as complex preparation process, low yield of finished product, low purity, low adhesion strength of finished product, and easy peeling or falling off in vacuum environment. Based on the above problems, a simple and feasible new type suitable for industrial production The preparation method of fluororesin is extremely necessary

Method used

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  • A kind of preparation method of f220 resin
  • A kind of preparation method of f220 resin
  • A kind of preparation method of f220 resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In a 1L titanium autoclave, add 336g of sodium sulfide (Na 2 S.5H 2 O), sodium hydroxide 4g, N-methylpyrrolidone 800ml, in 99.99%N 2 Under the protection of gas, heat the temperature to 110°C for 8 hours, remove 80g of water, NMP flows back into the reactor, the temperature rises to 235°C, add 147g of p-dichlorobenzene with a metering pump, and keep at this temperature for 2h . The obtained polymer mixed slurry was lowered to 127°C at a cooling rate of 20°C / min, and then 156.5g of p-chlorobenzoic acid and 85g of sodium acetate were added to the reaction kettle, and then the temperature was raised to 255°C and kept for 0.5h. Polymer mix paste. Dissolve 150.3g of 3,3,3-trifluoro-1-propanol in 200ml of N-methylpyrrolidone and control the temperature at 255°C through a metering pump, and gradually add it dropwise into the reactor for 1 hour. Stabilize the temperature at 255°C to release the pressure, discharge 45g of water, and then continue to control the reaction at 2...

Embodiment 2

[0025] In a 1L titanium autoclave, add 336g of sodium sulfide (Na 2 S.5H 2 O), sodium hydroxide 4g, N-methylpyrrolidone 800ml, in 99.99%N 2 Under the protection of gas, heat the temperature to 130°C, remove 80g of water, NMP flows back into the reactor, the temperature rises to 240°C, add 147g of p-dichlorobenzene with a metering pump, and keep at this temperature for 2h. The obtained polymer mixed slurry was lowered to 133°C at a cooling rate of 20°C / min, then 172.1g of p-chlorobenzoic acid and 85g of sodium acetate were added to the reaction kettle, and then the temperature was raised to 265°C and kept for 0.5h. Polymer mix paste. Dissolve 150.1g of 3,3,3-trifluoro-1-propanol in 200ml of N-methylpyrrolidone and control the temperature at 265°C through a metering pump, and gradually add it dropwise into the reactor for 1 hour. Stabilize the temperature at 265°C to release the pressure, discharge 45g of water, and then continue to control the reaction at 265°C for 4.5 hours...

Embodiment 3

[0029] In a 1L titanium autoclave, add 336g of sodium sulfide (Na 2 S.5H2O), sodium hydroxide 4g, N-methylpyrrolidone 800ml, in 99.99%N 2 Under the protection of gas, the temperature was heated to 120°C, 80g of water was removed, NMP flowed back into the reactor, and the temperature rose to 238°C, 161.7g of p-dichlorobenzene was added by a metering pump, and kept at this temperature for 2h. The obtained polymer mixed slurry was lowered to 130°C at a cooling rate of 20°C / min, then 200.1g of p-chlorobenzoic acid and 85g of sodium acetate were added to the reaction kettle, and then the temperature was raised to 258°C and kept for 0.5h. Polymer mix paste. Dissolve 150.6g of 3,3,3-trifluoro-1-propanol in 200ml of N-methylpyrrolidone and control the temperature at 262°C through a metering pump, and gradually add it dropwise into the reaction kettle for 1 hour. Stabilize the temperature at 258~261°C to release the pressure, discharge 45g of water, and then continue to control the r...

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Abstract

The invention discloses a F220 resin comprising sodium sulphide crystal, N -methyl -2- pyrrolidone (NMP), sodium hydroxide, inert gases, santochlor, parachlorobenzoic-acid, natrium aceticum, and 3, 3, 3 -trifluoro -1 -propyl alcohol as raw materials, and prepared by the steps of dewater treatment, polymerization reaction, re-dehydration, cooling, filtration, washing and drying, with 4. The preparing method has low cost and high production efficiency, product yield and product purity. The prepared product is characterized by resistance to high temperature and abrasion, anti-corrosion of acid and alkali and tetrafluoro inadhesion on the coating surface with product yield reaching 85. 7%, product purity of 95.9% and ash content lower than 0. 03%, and has excellent high temperature resistance and strong adhesive capacity with multiple metals with the melting point reaching 260.9oC and heat conductivity coefficient of 15.7W / m.k. The finished product has strong adhesive strength and will not bubble, peel off or fall off in the environment of high temperature and vacuum with the resin flow rate lower than 891g / 10min and tensile strength reaching 36Mpa at 200oC. The preparing method is simple, practicable, and suitable for industrial production.

Description

technical field [0001] The invention relates to the field of polymer material resin synthesis, in particular to a preparation method of F220 resin. Background technique [0002] Fluorine resin refers to a type of thermoplastic resin containing fluorine atoms in its molecular structure. It has excellent high and low temperature resistance, dielectric properties, chemical stability, weather resistance, non-combustibility, non-stick and low friction coefficient, etc. It began in the 1930s. In 1934, F. Schlofer and O. Scherer of Germany successfully researched polytrifluorochloroethylene, which was the first variety of fluororesin. In 1938, R.J. Plunkett of DuPont Company in the United States discovered and industrially produced polytetrafluoroethylene in 1945. This is the earliest industrialized fluororesin product, and new varieties have been continuously developed since then. In the early 1980s, there were 11 types of industrial production and mass production in the world, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G75/0254C08G75/0213C08G75/029C09D181/02C09D5/08
CPCC08G75/0213C08G75/0254C08G75/029C09D5/08C09D5/18C09D181/02
Inventor 朱庭辉
Owner 重庆卓之惠化工技术有限公司
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