Inorganic foam heat insulating material with second-grade closed-pore structure and preparation method thereof

Abstract

The invention discloses an inorganic foam heat insulting material with a second-grade closed-pore structure. The inorganic foam heat insulating material is prepared by hollow balls (hollow microsphere), gel material, fibers, a foaming agent, a reinforcing agent, a water repellent and water based on the proportion by weight of (70 to100): (35 to 80): (0 to 5): (0.1 to 2.5): (0 to 12): (0 to 5): (76 to 154). The inorganic foam heat insulating material prepared by the materials mentioned above has a second-grade closed-pore structure, so that relatively high heat insulating performance is achieved; the inorganic foam heat insulating material has the dry apparent density of 100 to 500kg / m<3>, compressive strength of 0.2 to 3.0MPa, and thermal conductivity of 0.020 to 0.080W / (m.k), and has the characteristics of incombustibility, low density, good heat insulating performance, capacity of absorbing sound and reducing noise, and low comprehensive cost, is convenient to construct, and uses a large number of solid wastes. The inorganic foam heat insulating material can be widely applied to the fields of building heat insulation and industrial heat insulation, and also can be widely applied to preparing inorganic hollow ball foam products; and the inorganic foam heat insulating material has high value in actual application.

Description

technical field [0001] The invention relates to the technical field of novel light-weight thermal insulation materials, in particular to the preparation of inorganic hollow ball foam thermal insulation materials with solid waste as the main raw material. Background technique [0002] At present, energy saving and consumption reduction are the consensus of the whole society. my country's building energy consumption accounts for more than 1 / 3 of the total energy consumption of the society. Therefore, the development and development of green building materials and the reduction of building energy consumption are important components of my country's energy conservation work. In the whole building, the heat transfer of the wall, especially the external wall, accounts for the largest proportion of the overall heat transfer of the building. The use of thermal insulation and energy-saving walls is the most important means to achieve building energy saving. Wall insulation can be div...

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Problems solved by technology

[0017] Although the research on the application of coal gangue classification has attracted extensive attention and corresponding research work has been carried out, the recognized scientific classification indicators have not yet been formulated, mainly because the composition of coal gangue in various regions is complex and the physical and chemical characteristics are different.

In addition, different coal gangue processing and utilization directions have different requirements on the chemical composition and physical and chemical properties of coal gangue, which is why it is difficult to reach a consensus on the classification and naming of coal gangue

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