Intelligent early-warning flame-retardant material prepared from modified high-molecular polymer and method and application

A technology of high polymer and flame retardant materials, applied in the field of polymer chemistry and functional materials, can solve the problems of single flame retardant mechanism, interference of living heat sources, single application value, etc. The effect of combustion performance

Active Publication Date: 2020-09-15
SHANDONG NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the interference of the living heat sources around the environment can easily cause false alarms
[0006] Generally speaking, the inventors of the present disclosure have found that the existing flame-retardant polymer materials have a single flame-retardant mechanism, and only by introducing non-flammable materials or flame-retardant Molecules achieve flame retardant effect
In particular, most modified materials can only meet basic physical properties such as flame retardancy and corrosion resistance, and their application value is single

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Take 141g of hexamethylene diisocyanate HDI (0.84mol) in a three-necked flask, turn on the mechanical stirring under the protection of nitrogen, and react 12.68g of 1,4-butanediol BDO (0.14mol) at 80°C for 5h under the protection of nitrogen, and cool After reaching room temperature, 200 mL of n-hexane was added, stirred and filtered to obtain white solid HBH. Mix measured amounts of ε-caprolactone (ε-CL) and 1,4-butanediol (BDO) under nitrogen protection, add a drop of stannous octoate dropwise, then slowly raise the temperature to 140°C, stir for 24 hours, and cool to room temperature , suction filtration, and vacuum drying to obtain the product PCL. At 80°C, under the protection of nitrogen, add the DMSO solution of HBH (20g HBH per 100mL DMSO) to the PCL prepolymer dropwise, react for 5 hours, add a proper amount of dioxane solvent to reduce the viscosity, settle, and dry to constant weight , to prepare polyurethane PEU, then dissolve PEU in chloroform (3g / 80mL), p...

Embodiment 2

[0044] (1) Take a certain amount of hexamethylene diisocyanate HDI and add it to 50mL of anhydrous toluene, rinse the polyurethane PEU film prepared in Example 1 with anhydrous toluene until the surface is clean, put it into the anhydrous toluene solution, add dropwise A drop of stannous octoate was shaken and reacted at 50°C for 6 hours. After the reaction was completed, the diaphragm was taken out and washed three times with anhydrous toluene to remove unreacted HDI;

[0045] (2) Take 60mg flake graphite powder as starting material, mix and stir with 3g potassium nitrate in 100ml concentrated sulfuric acid (98wt%), and cool in an ice bath. Slowly add 12g of potassium permanganate into the above mixture and stir vigorously, which not only improves the mixing with graphite, but also keeps the temperature below 20°C. The mixture was then heated in a water bath at 50 °C for 3 h, forming a thick paste. 150ml of water was gradually added to the paste, stirring was continued at 90...

Embodiment 3

[0049] in N 2 Under protection, polytetrahydrofuran ether PTMG (3g, 0.003mol) and hexamethylene diisocyanate HDI (1.33g, 0.006mol) were mixed and stirred for reaction, and 1-2 drops of stannous octoate were added dropwise as a catalyst, and the reaction was maintained at 85°C Prepare the prepolymer. Dissolve different contents of anilinomethyl POSS in 10mL of N,N-dimethylacetamide (DMAC) solvent, slowly drop into the prepolymer and stir well, keep the temperature at 95°C to mix the solution evenly, continue to add dropwise The N,N-dimethylacetamide (DMAC) solution of 1,4-butanediol (BDO) was poured into a polytetrafluoroethylene mold and volatilized naturally to prepare a modified polyurethane film.

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PUM

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Abstract

The invention discloses an intelligent early-warning flame-retardant material prepared from a modified high-molecular polymer and a method and application thereof. The method comprises the following steps: modifying a high-molecular polymer by diisocyanate; grafting an isocyanate group on the surface of the high-molecular polymer; then adding graphene oxide to react with an isocyanate group on thesurface of the high-molecular polymer to form a graphene layer on the surface of the high-molecular polymer, then adding aminopropyltriethoxysilane for reaction, adding tetraethoxysilane and tetramethylammonium hydroxide, and synthesizing octapolytetramethylammonium polyhedral oligomeric silsesquioxane on the graphene layer by a sol-gel method. The material prepared by the method integrates the flame-retardant property and signal induction into a whole so that the manufacturing cost of a security system can be reduced, and the fire detection precision can be further improved.

Description

technical field [0001] The invention belongs to the technical field of macromolecular chemistry and functional materials, and relates to the preparation of intelligent early-warning flame-retardant materials, methods and applications of modified macromolecular polymers. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Due to the advantages of light weight and easy processing and molding, polymer materials are widely used in production, life and other fields. However, most polymer materials are easy to burn, and the combustion process is accompanied by toxic and harmful smoke, so there is a serious fire hazard. Therefore, the flame retardant modification of polymer materia...

Claims

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Application Information

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IPC IPC(8): C08J7/12C08J5/18C08G18/66C08G18/42C08G18/32C08G18/48C08G18/61C08G18/10C08G14/06G01N27/04C08L75/06C08L75/08C08L61/34
CPCC08J7/12C08J5/18C08G18/664C08G18/4277C08G18/3206C08G18/6674C08G18/4854C08G18/61C08G18/10C08G14/06G01N27/041C08J2375/06C08J2375/08C08J2361/34C08G18/6511
Inventor 邹超侯昭升祝敬妥景臣钟文滕金伟徐钧刘辉王赛
Owner SHANDONG NORMAL UNIV
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