Expanded vitrified micro-bead fireproof thermal-insulation board and preparation method thereof

Abstract

The invention relates to an expanded vitrified micro-bead fireproof thermal-insulation board and a preparation method thereof, belonging to the field of construction materials. In the invention, inorganic expanded vitrified micro-beads, which are used as main raw materials, are combined with an organic binder, molded in a die and sintered, so that the expanded vitrified micro-beads are bound to form a compact single-layer board; and meanwhile, in the sintering process, the content of organic matters in the thermal-insulation board is greatly reduced to further enhance the fire resistance of the fireproof thermal-insulation board, thereby obtaining the fireproof thermal-insulation board with favorable comprehensive properties. The preparation technique of the expanded vitrified micro-bead fireproof thermal-insulation board is simple; and the expanded vitrified micro-bead fireproof thermal-insulation board has the advantages of low coefficient of thermal conductivity, high strength, excellent fire resistance, low water absorptivity, favorable thermal insulation effect, long service life and low volume weight, and can not deform or deteriorate when being used for a long time, therebybeing a green, economical and environment-friendly fireproof thermal-insulation material.

Description

technical field [0001] The invention relates to an expanded vitrified microbead fireproof insulation board and a preparation method thereof, belonging to the field of building materials. Background technique [0002] Thermal insulation is the most important energy-saving measure in building energy conservation. At present, there are many types of thermal insulation materials in my country, but there are generally problems of high water absorption, poor durability or flammability, and poor fire resistance. The former greatly reduces the thermal insulation performance of thermal insulation materials. It affects the effect of thermal insulation and increases the energy consumption of the air conditioning system, which will pose a threat to human life and safety. [0003] In the prior art, there are mainly three types of building energy-saving thermal insulation materials used on a large scale: EPS, XPS, and PU. EPS, XPS, and PU are all organic thermal insulation materials, and t...

AI Technical Summary

Problems solved by technology

The cost of rock wool board is low, and it is non-combustible, non-toxic, small bulk density, and small thermal conductivity, but its strength is low, easy to absorb water, and the rock (mineral) wool board fiber is itchy to the skin during production and installation, and the working conditions of workers are poor; The compressive strength and moisture resistance of foam glass are very good, but the price is relatively high. At the same time, because foam glass is sensitive to thermal shock, it is not suitable for use in a state of rapid temperature changes; phenolic foam boards have only begun to be used on a large scale in recent years. Thermal insulation materials have excellent fireproof, moisture-proof, heat-insulating and heat-insulating properties, but they are expensive, and the production output is small, so they cannot be used on a large scale; although polystyrene particle insulation mortar has good fire-proof and heat-insulating effects, it is easy to deform and crack. Water vapor is not easy to discharge, and the construction is difficult

[0004] At present, fire-proof and heat-insulating boards at home and abroad are mostly composed of multi-layer structures such as insulation layer and protective layer. A fast-setting non-combustible thermal insulation material for fire-proof thermal insulation boards". The material is neither easy to burn, but also has good thermal insulation performance and rapid solidification. However, the thermal insulation material of this invention uses more cement gelling materials, which has a certain limit on the bulk density, and the compressive strength of the board is only about 0.1Mpa.

Chinese patent application number 201010106017.7, the application date was February 5, 2010. The title of the invention patent is "a kind of cement polystyrene particle fireproof external wall insulation board". and polyphenylene particles as the main raw materials, adding expanded vitrified microbeads and other external wall insulation boards made by composite technology, the production process is relatively complicated, the weight part of the rapid hardening sulfoaluminate cement used in the insulation layer of the invention Reaching more than 80%, it will inevitably lead to a larger bulk density

Chinese patent application number 200710049511.2, published on January 14, 2009, the title of the invention patent is "fly ash thermal insulation and fireproof board and its production method". Heat insulation and fireproof board, the fireproof board has a three-layer structure, and the fly ash used in it has a large accumulation density, and the heat preservation effect is average. At the same time, the main material of the heat preservation and heat insulation board is still phenolic foam board, which is expensive

[0005] It can be seen that in the existing technology, no low-cost, low-density, high-fireproof, high-performance thermal insulation board has been developed, so it is imperative to develop light-weight fireproof and thermal insulation materials with good performance and low cost