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Organic phosphinate flame retardant, preparation method thereof and flame-retardant polymer

A technology of phosphinate and flame retardant, which is applied in the field of organic phosphinate flame retardants and their preparation, and flame retardant polymers, which can solve the problems of poor compatibility and poor flame retardant performance of flame retardant polymers, etc. problems, to achieve the effect of improving flame retardant performance, improving recycling rate and reducing cost

Inactive Publication Date: 2020-11-03
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the organic phosphinate flame retardants commonly used in the prior art mainly have the following problems: one is that the organic phosphinate flame retardants have poor compatibility with most plastic matrix polymers, and the other is that they can only be used for oxygen-containing Polymers, such as polyamide, polycarbonate, and polymers that do not contain oxygen, such as polyethylene, polyvinyl chloride, polypropylene, have poor flame retardancy, making organic phosphinic acid The application of salt flame retardants is limited

Method used

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  • Organic phosphinate flame retardant, preparation method thereof and flame-retardant polymer
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preparation example Construction

[0033] The present invention also provides a preparation method of the organic phosphinate flame retardant described in the above technical scheme, comprising the following steps:

[0034] Mixing and dissolving waste wind turbine blades with an organic solvent to obtain a dissolved mixture, which includes nano silicon dioxide and epoxy resin;

[0035] After mixing the dissolved mixture and alkyl hypophosphite, filtering to obtain a liquid mixture;

[0036] The liquid mixture is spray-dried to obtain the organic phosphinate flame retardant.

[0037] The invention mixes and dissolves waste wind power generator blades with an organic solvent to obtain a dissolved mixture, and the dissolved mixture includes nano silicon dioxide and epoxy resin.

[0038] In the present invention, the blades of the waste wind power generators are preferably crushed, and then mixed with an organic solvent for dissolution. In the present invention, the crushing method is preferably tertiary crushing...

Embodiment 1

[0055] 100g of waste wind power generator blades were crushed and screened sequentially to obtain 89g of waste wind power generator blade powder with an average particle size of 0.3mm, which was dissolved in 150g of ethyl acetate and stirred for 60min at a rate of 50 rpm to obtain a mixture , including 33g nano silicon dioxide (particle diameter is 100nm) and 56g epoxy resin in the mixture;

[0056] Add 70g of aluminum diethylphosphinate, grind in a ball mill at a rate of 50 rpm for 1 hour, take it out, filter and spray dry in turn, the drying temperature is 80°C, the gas source is nitrogen, and 135g of organic Phosphinate flame retardant with an average particle size of 150μm.

Embodiment 2

[0060] After 100g of waste wind power generator blades were pulverized and screened successively, 89g of waste wind power generator blade powders were obtained, with an average particle diameter of 0.3mm, dissolved in 150g of xylene, stirred at a rate of 50 rpm for 60min, to obtain a mixture, Include 27g nano silicon dioxide (particle diameter is 100nm) and 62g epoxy resin in the mixture;

[0061] Add 70g of aluminum dicyclohexylphosphinate, grind it in a ball mill for 90min at a rate of 50rpm, take it out, filter and spray dry in sequence, the drying temperature is 150°C, the gas source is nitrogen, and 142g of organic secondary Phosphonate flame retardant with an average particle size of 180 μm.

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Abstract

The invention provides an organic phosphinate flame retardant, a preparation method of the organic phosphinate flame retardant and a flame-retardant polymer, and belongs to the technical field of highpolymer materials. The organic phosphinate flame retardan comprises the following components in parts by mass: 16-50 parts of alkyl phosphinate, 2-20 parts of nano silicon dioxide and 10-30 parts ofepoxy resin, wherein the nano silicon dioxide and the epoxy resin are prepared from waste wind power generator blades. The compatibility of the organic phosphinate flame retardant is improved by taking the nano silicon dioxide and the epoxy resin which are prepared from the waste wind power generator blades as raw materials, and thereby the application range of the organic phosphinate flame retardant is expanded.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to an organic phosphinate flame retardant, a preparation method thereof, and a flame-retardant polymer. Background technique [0002] Phosphorus-based flame retardants mainly achieve flame-retardant effects by forming an isolation film between materials, oxidants, and heat sources. According to the different flame retardant effects of phosphorus compounds in different reaction zones, the flame retardant mechanism can be divided into condensed phase flame retardant mechanism and gas phase flame retardant mechanism. Phosphorus-based flame retardants are decomposed into phosphorus-containing oxyacids (phosphoric acid, metaphosphoric acid, polymetaphosphoric acid, etc.) when they are burned. Most of the oxyacids are viscous semi-solid substances, which can form a layer of glassy melt covering the coke layer on the surface of the material, reducing the gas permeability of the ch...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K9/10C08K3/36C08K5/5313C08L77/06C08L23/06C08L23/12C08L77/00C08L69/00C08J11/00C08J11/08
CPCC08K9/10C08K3/36C08K5/5313C08L77/06C08L23/06C08L23/12C08L77/00C08L69/00C08J11/00C08J11/08C08K2201/011C08L2201/02C08J2363/00C08L63/00Y02W30/62
Inventor 张恒王娜蓝惠霞
Owner QINGDAO UNIV OF SCI & TECH