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Nanometer grade paligorskite-flame retardant epoxide resin composite material

A technology of nano palygorskite and epoxy resin, which is applied in the field of polymer composite materials, can solve the problems of poor processing formability and physical and mechanical properties, and achieve the effect of low cost, low price and wide source

Inactive Publication Date: 2008-11-05
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the additive flame retardant method is that the raw materials are easy to obtain and the price is cheap, but a large amount of filling is required, which makes the processing formability worse and leads to a significant decline in physical and mechanical properties.

Method used

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Embodiment Construction

[0041] 1. Surface treatment of nano palygorskite (o-PGS)

[0042] Because palygorskite has a large specific surface area, high surface activity, easy aggregation, and poor affinity with organic polymers, the surface of palygorskite is organically treated to improve its compatibility with polymers. The specific modification method is as follows:

[0043] Weigh 10 g of nano-sized palygorskite, treat it with saturated sodium chloride solution for 10 h, and then wash it repeatedly with distilled water until the AgNO 3 Solution test without Cl -1 , to obtain palygorskite sodium; then add 3g of cetyltrimethylammonium bromide to the above suspension, stir at 80°C for 16h, and then repeatedly suction-filter and wash the treated product several times until it is washed with AgNO 3 Solution test without Br -1 Until then, vacuum dry at 100°C, and finally grind in a ball mill at a ball milling speed of 150r / min for 96 hours to obtain organic nano-palygorskite (30-60nm, some of the larg...

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Abstract

The invention provides a nano-palygorskite reinforced flame retarding epoxy resin composite material which disperses the nano-palygorskite into epoxy resin matrix by means of ultrasonic dispersion by mass ratio between 1:100 and 8:100 after surface treatment is carried out to the nano-palygorskite, then mix the obtained palygorskite epoxy resin mixture with a reactive-type flame retardant by the mass ratio between 100:5 and 100:30, and casting and curing are carried out. A plurality of P-N bond intermediates formed in the reactive-type flame retardant of the invention are phosphorylating agents better than routine phosphorus compounds, and water vapor generated from nano-palygorskite acting as a synergistic flame retardant during burning is in great favor for a phosphorous flame retardant, and the reinforcement of appropriate amount of nano-palygorskite compensates for the reduction of the mechanical property of the epoxy resin caused by adding the flame retardant to some extent, serving double effect of flame retardation and reinforcement, thus, the flame retarding epoxy resin composite material of the invention has the advantages of high oxygen index, good smoke suppression effect and excellent physical and mechanical properties.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and relates to the preparation of a flame-retardant epoxy resin composite material, in particular to a preparation of a flame-retardant epoxy resin composite material prepared with nano palygorskite as a reinforcing agent and a synergistic flame retardant preparation. Background technique [0002] As a polymer with a long history, epoxy resin has been widely used in various encapsulation materials, coatings, civil engineering, construction, adhesives, electronics, aviation and other fields, but like many other organic polymer materials, the environmental The flammability of epoxy resin, continuous burning after leaving the fire and a large amount of black smoke have greatly restricted its application in many fields, so flame retardants are usually added during use. [0003] At present, more than 80% of the flame retardants used in my country are halogen-based flame retardants such as h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K9/00C08K5/49C08J3/20
Inventor 雷自强杨全录王伟周添红
Owner NORTHWEST NORMAL UNIVERSITY
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