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

A technology of inorganic foam and thermal insulation materials, which is applied in household appliances, ceramic products, and other household appliances, etc., can solve the problems of different physical and chemical characteristics, complex composition of coal gangue, different requirements for chemical composition and physical and chemical properties of coal gangue, etc. Achieve high compressive strength, simple and convenient preparation method, and improve heat insulation performance

Inactive Publication Date: 2012-12-05
HEBEI YL BANGDA NEW MATERIALS LTD CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] A preparation method of an inorganic foam thermal insulation material with a secondary closed-cell structure, comprising the following steps:

[0042] Step 1: Weigh 70-100 parts by weight of hollow spheres, 35-80 parts by weight of cementitious materials, 0-5 parts by weight of fibers, 0-12 parts by weight of reinforcing agents and 0-5 parts by weight of water repellents, and prepare a mixed uniform powder;

[0043] Step 2: adding 76-154 parts by weight of water to the above-mentioned uniformly mixed powder, with a water-material ratio of 0.60-0.76, stirring, and preparing the uniformly mixed powder into a uniformly dispersed slurry;

[0044] Step 3: add 0.1-2.5 parts by weight of a foaming agent or prefabricated foam to the above slurry, the volume of the foam is 2-8 times the volume of the slurry, and fully stir to prepare a stable foam slurry;

[0045] Step 4: Pour the stable foam slurry into the mold to form, and dry naturally after curing.

[0046] In step 3, the...

Example Embodiment

[0047] Example 1

[0048] The mass ratio among hollow sphere, water glass, glass fiber, reinforcing agent, water repellent and water is 70:30:3:5:4:60. Mix the above raw materials evenly, and stir for a period of time to obtain slurry. Preparation of the foaming agent aqueous solution: dilute the animal foaming agent at 1:100 to obtain the foaming agent aqueous solution, and then add the foaming agent aqueous solution to the foaming machine, and the foaming machine is used to form foam. The foam is added to the above slurry, the volume of the added foam is 4 times the volume of the slurry, the foam and the slurry are stirred evenly, and after pouring, curing and molding, an inorganic hollow sphere foam insulation material with a secondary closed-cell structure is obtained. .

Example Embodiment

[0049] Example 2

[0050] The mass ratio between hollow sphere, aluminum dihydrogen phosphate, aluminum dihydrogen phosphate curing agent, polypropylene fiber, reinforcing agent, water repellent, and water is 60:40:5:4:3:4:90. Mix evenly and stir for a period of time to obtain slurry. Preparation of the foaming agent aqueous solution: dilute the animal foaming agent at 1:100 to obtain the foaming agent aqueous solution, and then add the foaming agent aqueous solution to the foaming machine, and the foaming machine is used to form foam. The foam is added to the above slurry, the volume of the added foam is 5 times the volume of the slurry, the foam and the slurry are stirred evenly, and after pouring, curing and molding, an inorganic hollow sphere foam insulation material with a secondary closed-cell structure is obtained. .

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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...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/04C04B28/06C04B28/10C04B28/14C04B28/26C04B28/34
Inventor 杨金龙苏振国席小庆齐飞陈金德王大伟
Owner HEBEI YL BANGDA NEW MATERIALS LTD CO
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