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A kind of preparation method of nano-inorganic composite flame retardant

A composite flame retardant and nano-inorganic technology, which is applied in the field of preparation of nano-inorganic composite flame retardants, can solve problems such as the impact on the mechanical properties of flame-retardant composite materials, and achieve improved dispersion effects, good compatibility, and improved limiting oxygen index Effect

Active Publication Date: 2018-10-19
普信氟硅新材料(衢州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of preparing nano-inorganic composite flame retardants, the flame retardants obtained by different dry modification methods have no great influence on the flame retardant effect of flame retardant composite materials, but have great influence on the mechanical properties of flame retardant composite materials. Impact

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1. Nano-magnesium hydroxide surface polymerization:

[0027] In a 1000L reactor, disperse a certain amount of nano-magnesium hydroxide into methanol, and add nano-cerium oxide, bistrimethylsilylated vinyl phosphate, benzoyl peroxide, polyvinyl alcohol, and methanol in the following proportions Wait, raise the temperature, and react at 60-80° C. for 6-15 hours to obtain a surface-polymerized nano-magnesium hydroxide microsuspension.

[0028] Component Kg

[0029] Nano Magnesium Hydroxide 20

[0030] Nano cerium oxide 0.8

[0031] Bistrimethylsilylated vinyl phosphate 3

[0032] Benzoyl peroxide 0.03

[0033] Polyvinyl alcohol 0.4

[0034] Methanol 200

[0035] Step 2. Compounding:

[0036] In a 1000L reactor, 100Kg nanometer magnesium hydroxide microsuspension, 0.4Kg N-sulfonic acid propylpyridinium p-toluenesulfonate, 0.3 parts of guanidine carbonate were mixed in the reactor for 18 hours, filtered and dried to obtain the product. Product number M-1.

Embodiment 2

[0038] Step 1. Nano-nanometer magnesium hydroxide surface polymerization:

[0039] In a 1000L reactor, disperse a certain amount of nano-magnesium hydroxide into methanol, add nano-yttrium oxide, bistrimethylsilylated vinyl phosphate, benzoyl peroxide, polyvinyl alcohol, and methanol in the following proportions , heat up, and react at 60° C. for 15 hours to obtain a surface-polymerized nano-magnesium hydroxide microsuspension.

[0040] Component Kg

[0041] Nano Magnesium Hydroxide 10

[0042] Nano Yttrium Oxide 0.5

[0043] Bistrimethylsilylated vinyl phosphate 1

[0044] Benzoyl peroxide 0.01

[0045] Polyvinyl alcohol 0.1

[0046] Methanol 200

[0047] Step 2. Compounding:

[0048] In a 1000L reactor, 100Kg of nano-magnesium hydroxide microsuspension, 0.1Kg of N-sulfonic acid propylpyridinium p-toluenesulfonate, and 0.1 part of guanidine carbonate were mixed in the reactor for 40 hours, filtered and dried to obtain the product. Product number M-2.

Embodiment 3

[0050] Step 1. Nano-nanometer magnesium hydroxide surface polymerization:

[0051] In a 1000L reactor, disperse a certain amount of nano-magnesium hydroxide into methanol, add nano-praseodymium oxide, bistrimethylsilylated vinyl phosphate, benzoyl peroxide, polyvinyl alcohol, and methanol in the following proportions , heat up, and react at 60-80°C for 6-15 hours to obtain a surface-polymerized nano-magnesium hydroxide microsuspension.

[0052] Component Parts by weight

[0053] Nano Magnesium Hydroxide 30

[0054] Nano Praseodymium Oxide 2

[0055] Bistrimethylsilylated vinyl phosphate 5

[0056] Benzoyl peroxide 0.05

[0057] Polyvinyl alcohol 0.5

[0058] Methanol 200

[0059] Step 2. Compounding:

[0060] In a 1000L reactor, 100 parts of nano-magnesium hydroxide microsuspension, 1 part of N-propylpyridine p-toluenesulfonate, and 1 part of guanidine carbonate were mixed in the reactor for 10 hours, filtered and dried to obtain the product. Product number M-3.

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Abstract

The invention provides a method for preparing nano-inorganic compound flame retardant. The method comprises the steps that a certain quantity of nano-magnesium hydroxide and nano-cerium oxide are added with di-trimethyl silicon vinyl phosphate surface polymerization, then mixed with ionic liquid to prepare the nanometer inorganic composite flame retardant.

Description

technical field [0001] The invention relates to a method for preparing a flame retardant, in particular to a method for preparing a nano-inorganic composite flame retardant. Background technique [0002] At present, the micron-sized aluminum hydroxide and magnesium hydroxide used in industry have an average particle size of about 1-10 microns, which can be applied to polyethylene, polypropylene, polyvinyl chloride, and EVA to prepare flame-retardant polymer materials. The mechanism of action of inorganic flame retardants such as alumina and magnesium hydroxide is: when the matrix resin burns, it will decompose and absorb heat, and at the same time release water to act as a flame retardant; and form a carbonized layer to block the flame from burning. It is generally believed that the combination of micron aluminum hydroxide and micron magnesium hydroxide can play a synergistic role in flame retardancy. Zinc borate is a commonly used auxiliary flame retardant, which can impro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/10C08K3/22C08K5/42C08K5/31C08L67/02
CPCC08K3/22C08K5/31C08K5/42C08K9/10C08K2003/221C08K2003/2213C08K2003/2224C08K2201/011C08L67/02
Inventor 王荣军吴健泳
Owner 普信氟硅新材料(衢州)有限公司