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Clay pre-dispersed compound flame retardant filler and preparation method

A composite flame retardant and pre-dispersed technology, applied in fire-resistant coatings and other directions, can solve the problems of low efficiency of liquid battery fire extinguishing, and achieve the effect of flexible technology

Inactive Publication Date: 2019-01-01
浙江蓝盾电工新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a clay pre-dispersed composite flame retardant filler and its preparation method, which can effectively solve the problems of low fire extinguishing efficiency of liquid batteries when applied to lithium battery fire extinguishing materials, and can effectively improve the fire safety of lithium batteries Guarantee, has broad application prospects in the field of battery energy storage

Method used

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  • Clay pre-dispersed compound flame retardant filler and preparation method
  • Clay pre-dispersed compound flame retardant filler and preparation method

Examples

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Embodiment 1

[0027] Embodiment one: take decabromodiphenylethane as example:

[0028] The embodiment of the present invention provides a clay pre-dispersed composite flame retardant filler and its preparation method, the method comprising:

[0029] 1. Pretreatment with bromine series flame retardants

[0030] Dissolve and disperse 10 grams of bromine series flame retardant powder in chloroform, then add 15 mL of chlorosulfonic acid solution with a mass fraction of 5.0%, stir for 30 minutes, and then separate the modified flame retardant in the chloroform solution, The powdery modified flame retardant is obtained by freezing or spray drying.

[0031] 2. Clay treatment

[0032] Disperse 10g of powdered modified flame retardant with 20mL THF tetrahydrofuran solution to form an emulsion; disperse 20g of clay in 20mL THF and stir for 24 hours; then mix the two according to the volume ratio of 1:1, and stir for 24 hours. The precipitate was separated by centrifugation. The precipitate is fre...

Embodiment 2

[0034] Embodiment two: decabromodiphenyl ether is an example:

[0035] The embodiment of the present invention provides a clay pre-dispersed composite flame retardant filler and its preparation method, the method comprising:

[0036] 1. Pretreatment with bromine series flame retardants

[0037] Dissolve and disperse 10 grams of bromine series flame retardant powder in chloroform, then add 150 mL of chlorosulfonic acid solution with a mass fraction of 35.0%, stir for 60 minutes, and then separate the modified flame retardant in the chloroform solution, The powdery modified flame retardant is obtained by freezing or spray drying.

[0038] 2. Clay treatment

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Abstract

The invention discloses a preparation method of a lithium battery fire-extinguishment filling material additive. The preparation method mainly comprises the following steps: pre-treating a bromine series flame retardant, treating clay and preparing a flame retardant; and testing a compound flame-retarding material to obtain a needed material. A bromine series flame retardant molecule has a mutualeffect with the surface of a silicate of the clay, so that the bromine series flame retardant molecule is relatively easy to absorb and disperse on a clay sheet layer, which is peeled off, and the hydrophobic bromine series flame retardant molecule enters a clay intercalation layer to form a nano compound flame retardant based on the clay. According to the preparation method, a melting method hascharacteristics of high efficiency, flexibility, developed technology and the like, so that a result has an important guide effect on the industrial production of clay compound flame retardants.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a clay pre-dispersed composite flame retardant filler and a preparation method thereof. Background technique [0002] Bromine series flame retardants have the best application effect in thermoplastic resins, and the most widely used are halogen-containing flame retardants, among which decabromodiphenyl ether is the most widely used. Recently, decabromodiphenyl ether and decabromodiphenyl ether have been developed in the market In terms of bromine content and thermal stability, as well as decabromodiphenylethane flame retardants that are similar in molecular structure, decabromodiphenylethane combustion does not produce carcinogenic "dioxins", while the flame retardant efficiency and the used The resin and process are almost the same as those of decabromodiphenyl ether. In addition, the raw materials are easy to obtain, and the cost has advantages that other flame retardants do not ha...

Claims

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Application Information

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IPC IPC(8): C09K21/08
CPCC09K21/08
Inventor 金法泉罗俊
Owner 浙江蓝盾电工新材料科技有限公司
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