Method for preparing small expended and vitrified ball with reinforcing layer coated on surface

Abstract

The invention relates to a method for preparing a small expended and vitrified ball with a reinforcing layer coated on the surface. By combining the advantages of the small expended and vitrified ball and a thermosetting polymer material, the small expended and vitrified ball with the reinforcing layer coated on the surface is prepared by forming an insoluble and infusible high molecular protective film on the surface of the small expended and vitrified ball through the crosslinking and solidification of thermosetting resin. The strength and the heat-preservation and heat-insulating performance of the small expended and vitrified ball with the reinforcing layer coated on the surface are improved, the problems that the small expended and vitrified ball is easy to crack in use and the like are reduced, and meanwhile, the water absorption rate of the small expended and vitrified ball is reduced greatly. The method has the advantages that the preparation process is simple, the small expended and vitrified ball is easy to control and the like. The small expended and vitrified ball with the reinforcing layer coated on the surface can be used as heat-preservation light mortar and a plaster material, a heat-preservation and heat-insulating layer in oil cans, liquefied gas storage tanks and industrial gas storage tanks and a raw material of a light high-grade refractory material.

Description

technical field [0001] The invention relates to a method for preparing expanded vitrified microbeads with a surface coating reinforcement layer, belonging to the field of polymer composite materials. Background technique [0002] With the increasingly sharp contradiction between economic development and resources and environment, people's awareness of environmental protection is increasing, and new materials for energy saving and environmental protection have become a hot research topic. In terms of building energy-saving materials, expanded vitrified microbeads have entered people's field of vision due to their advantages in environmental protection, energy saving, and heat preservation. A new type of inorganic lightweight thermal insulation material. Expandable vitrified microbeads are a kind of acidic vitreous lava minerals. After crushing, screening, high-temperature instantaneous combustion and expansion vitrification, they are spherical fine-diameter particles with po...

AI Technical Summary

Problems solved by technology

Chinese patent application number 200710031860.1, published on May 28, 2008, the title of the invention patent is "A Modified Vitrified Microbead Thermal Insulation Mortar and Its Preparation Method". Low-quality vitrified microbeads, and then use modified vitrified microbeads to prepare modified vitrified microbead thermal insulation mortar. , but did not improve the strength of expanded vitrified beads

So far, no reports have been found on the surface coating of thermosetting resins to enhance the expansion of vitrified microbeads