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Nano-modified inorganic heat insulation board and preparation process thereof

An inorganic insulation board and nano-modification technology, applied in the field of building materials, can solve problems such as poor thermal performance, small dry-wet deformation, low water absorption, etc., to achieve improved crack resistance integrity, excellent compatibility, and resource conservation Effect

Inactive Publication Date: 2018-12-07
JIANGSU NIGAO SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem mainly solved by the present invention is to provide a nano-modified inorganic thermal insulation board and its preparation process, make full use of the advantages of the foamed cement board in fire prevention and thermal insulation, and solve its high water absorption rate, poor toughness, poor thermal performance, etc. Technical problem, the prepared nano-modified inorganic insulation board has the advantages of good heat preservation, high surface strength, good flame retardancy, small dry and wet deformation and low water absorption

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  • Nano-modified inorganic heat insulation board and preparation process thereof

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Effect test

Embodiment 1

[0031] A nano-modified inorganic thermal insulation board, comprising a cement-based lightweight reinforced thermal insulation board core material and a nano-scale polymer emulsion permeable coating, and the cement-based lightweight reinforced thermal insulation board core material is composed of the following raw materials in weight percentage : Portland cement 58%, silica fume 3.1%, fly ash 3.6%, water 30%, aluminate 0.1%, chloride salt 0.33%, stearate water repellent 0.3%, nano-scale graphite 1.5% , modified polypropylene fiber 0.2%, naphthalene dispersant 0.07%, hydrogenated blowing agent 2.8%.

[0032] Wherein, the nano-scale high-molecular polymer emulsion in the nano-scale high-molecular polymer emulsion penetrating coating is a silicone-modified acrylic emulsion, and the penetration depth is 0.8mm.

[0033] The preparation process of the nano-modified inorganic insulation board specifically includes the following steps:

[0034] (1) Pour water, Portland cement, silica...

Embodiment 2

[0037] A nano-modified inorganic thermal insulation board, comprising a cement-based lightweight reinforced thermal insulation board core material and a nano-scale polymer emulsion permeable coating, and the cement-based lightweight reinforced thermal insulation board core material is composed of the following raw materials in weight percentage :

[0038] Ordinary Portland cement 62%, fly ash 4.4%, water 28%, aluminate 0.1%, sulfate 0.45%, stearate water repellent 0.7%, nano-scale graphite 1%, modified polypropylene Fiber 0.3%, polycarboxylate dispersant 0.05%, hydrogenated blowing agent 3%.

[0039] Wherein, the nanoscale high molecular polymer emulsion in the nanoscale high molecular polymer emulsion penetrating coating is a silicone-modified styrene-acrylic emulsion, and the penetration depth is 0.5mm.

[0040] The preparation process of the nano-modified inorganic insulation board specifically includes the following steps:

[0041] (1) Pour water, ordinary Portland cemen...

Embodiment 3

[0044] A nano-modified inorganic thermal insulation board, comprising a cement-based lightweight reinforced thermal insulation board core material and a nano-scale polymer emulsion permeable coating, and the cement-based lightweight reinforced thermal insulation board core material is composed of the following raw materials in weight percentage :

[0045] Portland cement 60%, mineral powder 5%, water 28.84%, triethanolamine 0.03%, aluminate 0.15%, stearate water repellent 0.6%, nano-scale graphite 2%, modified polypropylene fiber 0.4 %, naphthalene-based dispersant 0.08%, hydrogenated blowing agent 2.9%.

[0046] Wherein, the nanoscale high molecular polymer emulsion in the nanoscale high molecular polymer emulsion penetrating coating is a silicone-modified acrylic emulsion, and the penetration depth is 0.7mm.

[0047] The preparation process of the nano-modified inorganic insulation board specifically includes the following steps:

[0048] (1) Pour water, portland cement, m...

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Abstract

The invention discloses a nano-modified inorganic heat insulation board and a preparation process thereof. The board is composed of: cement, a mineral mixture, water, an early strength agent, a waterrepellent, a nano-modifying material, fibers, a dispersant, a foaming agent, and a nano-polymer emulsion. The preparation process includes: successively pouring the water, cement, mineral mixture, early strength agent, water repellent, nano-modifying material and fibers into a stirring machine, adding the dispersant, and adding the foaming agent to make foamed slurry; injecting the foamed slurry in a mould to obtain a cement-based light-weight reinforced heat insulation board; uniformly spray-coating the surface of the cement-based light-weight reinforced heat insulation board with the nano-polymer emulsion until the emulsion permeates through the surface of the core of the inorganic heat insulation board, and drying and maintaining the product. By adding the nano-scale graphite, mechanical and thermal performances of the cement-based porous material are significantly improved; by means of the surface permeation coating treatment, quality problems of low surface strength, high water absorption rate, low toughness, and poor compatibility with matched mortar of the cement-based porous material are solved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a nano-modified inorganic thermal insulation board and a preparation process thereof. Background technique [0002] The current domestic building energy-saving measures mainly adopt high-efficiency thermal insulation materials on the inside or outside of the building envelope (external wall) for auxiliary thermal insulation. Currently, commonly used materials for external wall thermal insulation systems include organic thermal insulation boards, inorganic thermal insulation boards and Composite insulation board. Organic insulation boards such as polystyrene boards cannot be used in a large area because they do not achieve Class A fire protection effects, and are prone to fire; inorganic insulation boards such as rock wool have properties such as low tensile strength and high water absorption, which lead to their limited range of use; Although the foamed cement board h...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/10C04B41/64C04B111/28
CPCC04B28/04C04B41/4988C04B41/64C04B2111/28C04B2201/20C04B2201/32C04B2201/50C04B18/146C04B18/08C04B14/024C04B20/008C04B24/085C04B16/0633C04B24/00C04B2103/12C04B2103/42C04B38/10C04B24/24C04B18/141C04B24/122C04B41/4539
Inventor 钱中秋赵大军吴开胜张朝辉邵银存张宗超
Owner JIANGSU NIGAO SCI & TECH
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