Graphene modified slurry insulation material and preparation method thereof

Abstract

The invention provides a graphene modified slurry insulation material, prepared from the following raw materials in parts by weight: 5-10 parts of polystyrene particles, 20-40 parts of epoxy modified phenolic resin, 10-15 parts of encapsulated expanded perlite, 5-10 parts of graphene, 3-5 parts of methoxyphenyl methoxyl silicon oil, 1-3 parts of stablizer and 0.1-1 part of flexibilizer. The preparation method comprises the following steps: (1) according to the proportion, weighing the polystyrene particles, encapsulated expanded perlite and graphene, stirring and mixing to obtain mixture A; (2) heating the mixture obtained in step (1) to 70-90DEG C, then adding the epoxy modified phenolic resin and methoxyphenyl methoxyl silicon oil and stirring to obtain mixture B; and (3) placing the mixture B under a vacuum condition, then adding the stablizer and flexibilizer and stirring uniformly, and cooling to room temperature. The insulation material has folding strength of over 12MPa, low water absorptivity and low thermal conductivity.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a graphene-modified slurry thermal insulation material. Background technique [0002] The construction area of ​​new urban and rural buildings in my country is nearly 2 billion square meters each year, and the existing buildings are nearly 42 billion square meters. Building energy consumption has accounted for more than 27% of the country's total energy consumption. It is the energy saving of the envelope structure that has a particularly important position. The most commonly used insulation materials such as extruded polystyrene board (XPS) or expanded polystyrene board (EPS), despite their advantages such as low thermal conductivity and low density, as organic materials, their flammability poses a great safety hazard, In recent years, fires in "CCTV Building", "Shanghai Teacher's Apartment" and "Shenyang Wanxin Hotel" caused by the burning of insulation l...

AI Technical Summary

Problems solved by technology

The most commonly used insulation materials, such as extruded polystyrene board (XPS) or expanded polystyrene board (EPS), have the advantages of low thermal conductivity and low density, but as organic materials, their flammability poses a great safety hazard. In recent years, fires in "CCTV Building", "Shanghai Teacher's Apartment" and "Shenyang Wanxin Hotel" caused by the burning of insulation layers occurred in Beijing, Shanghai, Shenyang and other places, fully exposing the fire prevention defects of traditional organic insulation materials

[0003] my country's thermal insulation materials are currently in a period of development. Although some gratifying progress has been made, the overall technical level is backward, especially in the research and development of slurry thermal insulation materials.

At present, a large number of slurry insulation materials used in civil engineering in my country are still traditional slurry expanded perlite insulation materials, which have a high water absorption rate, poor crack resistance and weather resistance, and have great limitations in application. Survived many times, the construction efficiency is low, and the insulation mortar is prepared on site