Energy storage energy-efficient foam gypsum cement composite material and preparation method thereof

A cement composite material and composite cementitious material technology, applied in the field of building materials, can solve the problems of foam gypsum water resistance, high temperature brittleness, etc., and achieve the effects of short molding and curing time, low energy consumption, and energy saving

Active Publication Date: 2012-11-07
南京依科国特新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This ratio cannot meet the needs of improving the water resistance of foamed gypsum and improving its high temperature brittleness

Method used

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  • Energy storage energy-efficient foam gypsum cement composite material and preparation method thereof
  • Energy storage energy-efficient foam gypsum cement composite material and preparation method thereof
  • Energy storage energy-efficient foam gypsum cement composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Step 1: Take by weight percentage: 36% of hemihydrate gypsum, 24% of cement, 2% of silica fume, 1% of lime, 2% of expanded perlite (light aggregate), 2% of microcapsule-coated paraffin (phase transition temperature 26°C ) 3%, polyvinyl alcohol emulsion 3.2%, foam 2.8%, glass fiber 1.2%, surfactant 0.1%, magnesium hydroxide (flame retardant) 2.5%, sodium naphthalenesulfonate (water reducer) 0.2%, water twenty two%;

[0041] Wherein, the foam is prepared as follows: prepare a blowing agent solution with a concentration of polyoxyethylene ether of 0.2% and a concentration of polyvinyl alcohol emulsion of 0.1%. Then the blowing agent solution is sent to the compressed air foaming machine to produce a foam with a cell diameter of about 0.3mm and a foam density of 80kg / m3;

[0042] Step 2: Add liquid components such as water, polymer emulsion and surfactant into the raw material mixing tank. Premix solid components such as hemihydrate gypsum, cement and other composite ceme...

Embodiment 2

[0047] Weighing by weight percentage: 36% of hemihydrate gypsum, 24% of cement, 2% of silica fume, 1% of lime, 2% of polystyrene foam particles (light aggregate), 2% of microcapsule-coated paraffin (phase transition temperature 26oC)3 %, acrylic emulsion 3.2%, foam 2.8%, glass fiber 1.2%, surfactant 0.1%, magnesium hydroxide 2.5%, sodium naphthalenesulfonate 0.2%, water 22%;

[0048] Wherein, the foam is prepared as follows: a foaming agent solution with a concentration of 0.3% of sodium dodecylbenzenesulfonate and a concentration of acrylic acid emulsion of 0.06% is prepared. Then the blowing agent solution is sent to the compressed air foaming machine to produce a foam with a cell diameter of about 0.5 mm and a foam density of 50 kg / m3; other preparation process steps are the same as in Example 1.

Embodiment 3-8

[0050] Embodiment 3-8 is the comparative test of six different formulations. The six formulations are listed in Table 1. The foam prepared in Example 2 is used, and the process method of Example 1 is used to make plates with a thickness, length and width of about 50x305x305mm.

[0051] Table 1. Weight percent formulations of syntactic foam examples 3-8

[0052]

[0053] The compressive strength is tested according to ASTM C109, and the fire resistance is tested according to GB 9978-88. Table 2 lists the main properties of the syntactic foam prepared by the formulations of Examples 3-8. From the compressive strength of Examples 3 and 4, it can be seen that under the similar density, silica fume and lime are not as obvious as phase change materials in improving the mechanical properties of the foam, and the addition of micro-encapsulated paraffin phase change materials makes the embodiment 6 The compressive strength of the foam material is increased by more than 70% compare...

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Abstract

The invention relates to an energy storage energy-efficient foam gypsum cement composite material and a preparation method thereof. The formula thereof is composed of a composite cementing material, lightweight aggregate, a phase change energy storage material, polymer latex, foam and a foaming agent. The composite cementing material is mainly composed of semi-hydrated gypsum and cement. The preparation method thereof comprises the steps of: preparing a foaming agent solution to prepare stable foam; thoroughly mixing water, polymer emulsion and other liquid state components with the composite cementing material, the phase change energy storage material and other additives such as solid-state components; and sending the solid-liquid mixed slurry to a foam-mixing kettle filled with the lightweight aggregate, while introducing the foam, to prepare the foam gypsum cement composite slurry. The inorganic composite foam material of the present invention has an energy storage function absorbing heat during the day and radiating heat at night, so as to effectively maintain a comfortable indoor temperature, is fire-proof, heat preservative, humidity-adjustable, good in water-resistance, and high in strength, and can be used for manufacturing fireproof insulation layers or fireproof insulation zones for interior and exterior walls of buildings, heat insulation, fire proof and heat preservation wallboards, door panels and core materials, steel structure fireproof cladding materials and the like.

Description

technical field [0001] The invention relates to a building material, in particular to a formula and a manufacturing process of an energy-saving fire-proof and heat-insulating gypsum cement composite foam material containing a phase-change energy storage material. Background technique [0002] Plastic foams such as polyurethane foam, polystyrene foam and phenolic resin foam are regarded as general-purpose thermal insulation materials, and are widely used as thermal insulation layers for interior and exterior walls of buildings and core materials for door panels. However, foam plastics are not fireproof, not resistant to high temperature, and release a lot of poisonous gas during combustion. Once a fire breaks out, the heat insulation foam layer made of foam plastic board will quickly decompose, and even the entire insulation layer will disappear, causing the inner and outer decorative panel layers connected to it to fall off, so that the wall surface of the main structural la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14
Inventor 江海红
Owner 南京依科国特新材料科技有限公司
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