fbt-x series rare earth composite thermal insulation material and preparation method thereof

Abstract

The invention discloses a novel FBT‑X series rare earth composite thermal insulation material and a preparation method thereof. Composite processing. The production process of this material utilizes the principles of physical and chemical effects such as material surface treatment, mechanochemical modification, and encapsulation modification, so that a large number of closed vacuum-like micropores are generated inside the product, which increases the porosity and specific surface area. The thermal insulation material presents a layered net-like stacked force unit and a filling structure, which endows the material with excellent thermal insulation performance and long service life. This material has a wide range of applications, and can be used for the insulation of various equipment and pipelines from -40°C to 800°C, especially for the insulation of special-shaped objects. The construction of this material is simple and easy, and it is convenient for inspection and maintenance. There is no asbestos in the material, no dust during construction, and the remaining materials can be recycled. It is a green and environmentally friendly product.

Description

technical field [0001] The invention relates to the field of thermal insulation materials, in particular to FBT-X series rare earth composite thermal insulation materials and a preparation method thereof. Background technique [0002] Thermal insulation technology is the most economical and most effective measure for energy saving and consumption reduction. Research and development of new thermal insulation materials is an important topic for energy saving, consumption reduction and emission reduction. The current industrial thermal insulation is still dominated by traditional inorganic fiber materials such as rock wool, glass wool and aluminum silicate wool. These materials are relatively cheap and easy to construct, but most of them have single material, limited functions, and poor thermal insulation performance. , can not be used stably for a long time and so on. The composite thermal insulation material developed in the 1990s has certain advantages in thermal insulation...

AI Technical Summary

Problems solved by technology

However, there is no uniform formula for this kind of material. Due to the rapid development, the quality of good and bad is uneven, and the performance and quality vary greatly. Especially with the improvement of the country's environmental protection requirements and the emergence of some new materials, the disadvantages and shortcomings of this kind of material are gradually revealed.

First, most of the raw materials used in such products contain asbestos and OT penetrant. Asbestos is a carcinogen, and OT penetrant has a pungent smell, which is harmful to the health of production operators and pollutes the environment. Some board production processes Medium energy consumption is high, which does not meet the requirements of energy conservation and environmental protection; second, some products have poor thermal insulation performance, especially some board felt materials based on asbestos, which have large internal apertures and poor barrier performance to convection and radiation heat dissipation. The thermal conductivity is high, and the heat preservation effect is not good; third, the structural strength of some products is unstable, especially some powders mixed with sepiolite as the main material and other materials, which will crack and pulverize and fall off after long-term use; Fourth, the formulations of such materials are different and there are many types, but most of them have a single model and limited functions, resulting in a single form of thermal insulation structure in practical applications. Meet the requirements of various working conditions

[0003] In recent years, new nano-scale thermal insulation materials represented by airgel have appeared. This type of material has excellent thermal insulation performance, but is expensive, and most of them are used in combination with fiber materials. The disadvantages of fiber materials and the weaknesses of airgel itself still exist. Therefore, there are certain restrictions on its popularization and application.