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A core-shell structure nano-zinc stannate flame retardant and its epoxy acrylate intumescent flame retardant coating with phosphorus and nitrogen

A technology of epoxy acrylate and nano-zinc stannate, applied in epoxy resin coatings, fire-retardant coatings, coatings, etc., can solve the problems of application limitation, high price, etc., and achieve the promotion of carbon layer formation, good flame retardant effect, The effect of improving the flame retardant effect

Active Publication Date: 2020-09-15
福建省海凝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its application is limited due to its high price

Method used

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  • A core-shell structure nano-zinc stannate flame retardant and its epoxy acrylate intumescent flame retardant coating with phosphorus and nitrogen
  • A core-shell structure nano-zinc stannate flame retardant and its epoxy acrylate intumescent flame retardant coating with phosphorus and nitrogen
  • A core-shell structure nano-zinc stannate flame retardant and its epoxy acrylate intumescent flame retardant coating with phosphorus and nitrogen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: the preparation of nano zinc stannate (NXSX)

[0052] 0.02M SnC1 4 ·5H 2O and 0.02M ZnC1 2 ·3H 2 O was dissolved in 300ml distilled water, and an appropriate amount of 1mol / L hydrochloric acid solution was added dropwise to prevent SnC1 4 ·5H 2 O hydrolysis, stir the mixed solution evenly, add an appropriate amount of NaOH, and stir vigorously while adding, so that the final pH value of the reaction system is 8-9 respectively. After crystallization at room temperature for 6 hours, filter the precipitate, and centrifuge wash it with 70°C distilled water for three times, and then Dry it in an oven at 70°C, grind it for later use, and obtain nano-zinc stannate, which is denoted as NXSX.

Embodiment 2

[0053] Embodiment 2: the preparation of organic nano zinc stannate (HPNXSX)

[0054] 0.02M SnC1 4 ·5H 2 O and 0.02M ZnC1 2 ·3H 2 O, and 1% sodium stearate were dissolved in 300ml distilled water, and an appropriate amount of 1mol / L hydrochloric acid solution was added dropwise to prevent SnC1 4 ·5H 2 O hydrolysis, stir the mixed solution evenly, add an appropriate amount of alkali, and stir vigorously while adding, so that the final pH value of the reaction system is 8-9 respectively. After crystallizing at room temperature for 6 hours, filter the precipitate, and centrifuge wash it with 70°C distilled water for three times, and then Dry it in an oven at 70°C, grind it for use, and obtain organic nano-zinc stannate (sodium stearate nano-zinc stannate), which is denoted as HPNXSX.

Embodiment 3

[0055] Embodiment 3: the preparation of nano zinc stannate capsule (NSiXSX)

[0056] Weigh 10g of nano-zinc stannate prepared in Example 1, 80g of absolute ethanol, 10mL of water and 0.1g of Tween-80, add them into a three-necked bottle and stir rapidly for 30min, add 7g of ethyl orthosilicate dropwise, and then use ammonia water Adjust the pH of the reaction solution to about 8, then heat up to 70°C, keep stirring for 3 hours, then cool, filter, wash and dry to obtain nano-zinc stannate capsules with a core-shell structure, which are designated as NSiXSX.

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Abstract

The invention discloses a core-shell structural nano zinc stannate flame retardant and a phosphorus-nitrogen synergistic epoxy acrylate expansion flame-retardant coating containing the flame retardant. The coating is prepared by the following steps: zinc ions and tin ions are subjected to a reaction to prepare nano zinc stannate, a nano inorganic flame retardant (nano silicon dioxide) is used as amatrix, the nano zinc stannate coats the surface of the matrix by utilizing a uniform precipitation method combined with an ultrasonic dispersion and azeotropic distillation technology to prepare a core-shell structural nano zinc stannate capsule, the nano zinc stannate capsule is compounded with ammonium polyphosphate, and therefore the phosphorus-nitrogen synergistic epoxy acrylate expansion flame-retardant coating containing zinc, tin and silicon is prepared. The coating provided by the invention has a good flame-retardant effect, and can effectively promote formation of a carbon layer, thereby improving the flame retardant effect; and the coating has good mechanical, optical and thermal stability properties, and can meet demands for current flame-retardant coatings.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant coatings, and in particular relates to a core-shell structure nano-zinc stannate flame retardant and an epoxy acrylate swelling flame-retardant coating coordinated with phosphorus and nitrogen. Background technique [0002] Nanomaterials are materials with a new structure developed in the mid-1980s, and are known as "the most promising materials in the 21st century". Particles with a particle size in the range of 1 to 100 nm and which can observe volume effects or surface effects are often called nanoparticles. Nano-additives are used to fill plastics, which will have the effect of plasticizing and strengthening rigid particles. This is because the performance of flame retardant is dominated by chemical reactions. For the same amount of flame retardant, the smaller the particle size, the larger the specific surface area, and the better the flame retardant effect. On the other hand, ultra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/10C09D5/18C01G19/00C01B33/18
CPCC01B33/18C01G19/00C01P2004/32C01P2004/80C08K2003/323C08K2201/011C09D5/185C09D163/10C08K3/32C08K3/24C08K3/36C08K9/04C08K3/26
Inventor 杨磊林启郑炳云
Owner 福建省海凝环保科技有限公司