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Fireproof and/or fire-extinguishing microcapsule, preparation method thereof and application of microcapsule

A technology of microcapsules and fire extinguishing materials, which is applied in the direction of fire prevention equipment, etc., can solve the problems of instability, structural design, complicated production process, high cost, etc., and achieve the effects of improved sealing, long-term stable storage and use, and strong applicability

Active Publication Date: 2019-05-31
苏州海云涂层技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another example is that patent RU2011104729 (WO2012107825A1, CN103370104A) discloses a fire extinguishing agent, the structure of which contains a composite material with a microcapsule structure, but the microcapsule structure also requires the use of a special mineral fiber, etc. The binder reinforces the capsule structure, and the microcapsules and the binder are prepared into a specific plate shape for use. Therefore, the fire extinguishing agent with a plate-shaped structure disclosed in this patent has complicated structural design and manufacturing process and high cost. , and the use of a large number of auxiliary additives in the binder makes it introduce many uncertain and unstable factors in the actual production and use process, it is difficult to promote the use of large areas, which greatly limits the scope of use of the fire extinguishing agent; in addition , the fire extinguishing material used in the fire extinguishing agent disclosed in this patent is also a non-environmentally friendly fire extinguishing material that is currently banned or restricted internationally

Method used

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  • Fireproof and/or fire-extinguishing microcapsule, preparation method thereof and application of microcapsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] The preparation of the polyisocyanate prepolymer of embodiment 1 modification

[0118] (1) Preparation process

[0119] 1) heating dibasic alcohols, dibasic acids, dibasic acid anhydrides and / or dibasic acid esters in a nitrogen-protected environment to carry out esterification and / or transesterification reactions, and distill off the small molecule by-products generated by the reaction; After the reaction is completed, the by-products and unreacted monomers generated by the reaction are further removed under reduced pressure; the target product obtained by the reaction is separated from the hydroxyl-terminated copolyester. The average molecular weight of the target product copolyester with terminal hydroxyl group is controlled at 300-5000.

[0120] Specifically, the diols include aliphatic diols and / or aromatic diols; more specifically, in this embodiment, the diols are ethylene glycol;

[0121] And / or specifically, the dibasic acid includes aliphatic dibasic acid an...

Embodiment 2-6 and comparative example 1

[0150] The preparation process of the fire prevention and / or fire extinguishing microcapsules described in Examples 2-6 and Comparative Example 1 is the same as that of Example 1, except that the replacement and adjustment are carried out according to the following Table 1.

[0151] Table 1

[0152]

[0153] In addition, the mass ratio of the ester group-modified polyisocyanate prepolymer to the fire extinguishing material in Example 2 is 1:18.

[0154] The fire prevention and / or fire extinguishing microcapsules prepared in Examples 2-6 and Comparative Example 1 were tested, and the test results are shown in Table 2 and Table 3.

[0155] Table 2

[0156]

[0157] table 3

[0158]

[0159] Finally, the present invention further prepares the fireproof and / or fire extinguishing microcapsules prepared by the above-mentioned embodiment 2 into fireproof and / or fire extinguishing silk rope according to the preparation method of conventional silk rope; the fir...

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Abstract

The invention provides a fireproof and / or fire-extinguishing microcapsule, a preparation method thereof and an application of the microcapsule. Modified polyisocyanate prepolymers are mixed with fireproof and / or fire-extinguishing materials, mixture is dispersed in water, and polyhydric alcohols and / or polyamines are added into the water to prepare the fireproof and / or fire-extinguishing microcapsule. High molecular polymerization monomers are designed and selected to synthesize the microcapsule with various enhanced physicochemical properties of shell materials, the strength, the flexibilityand the sealing performance of the microcapsule are greatly improved, so that the microcapsule can be directly and independently used as a fire-extinguishing agent, the microcapsule can also be individually used as a main material or functional additive, added into various composite materials and conveniently and directly used for preparing fireproof and / or self-excitation fire-extinguishing materials in various fields of coatings, adhesives, rubber, plastics and the like, and the applicable range and the application field of gas and liquid fire-extinguishing materials and the fireproof and / orfire-extinguishing microcapsule are greatly widened.

Description

technical field [0001] The invention belongs to the technical field of fire safety and fire extinguishing material development, and in particular relates to a fire prevention and / or fire extinguishing microcapsule, a preparation method thereof and an application thereof. Background technique [0002] In the actual field of fire protection and fire-fighting technical solutions, human participation and special fire-fighting facilities and power sources are necessary, and special fire-fighting facilities are expensive and inconvenient to use, and firefighters often need to risk their lives to extinguish the fire. Therefore, it is necessary to develop more advanced technologies to change this situation. [0003] Microcapsule technology is a protection technology that uses film-forming materials to encapsulate some reactive, sensitive or volatile liquids or solids to form tiny particles. Microcapsule technology has been widely used in many fields such as medicine, medicine, pest...

Claims

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Application Information

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IPC IPC(8): A62D1/00C08G18/42
CPCY02E60/10
Inventor 金旭金英明
Owner 苏州海云涂层技术有限公司
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