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A desulfurized gypsum-based machine-sprayed thermal insulation mortar and its preparation method

A technology of desulfurized gypsum and thermal insulation mortar, applied in the field of composite thermal insulation materials, can solve the problems of poor cohesion of mortar, difficult construction, poor water retention, etc., and achieve the effects of fast construction, low cost, and prevention of solid pollution

Inactive Publication Date: 2018-02-09
安东投资控股集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The cold-formed thin-walled light steel wall enclosure structure of the traditional rock wool insulation sandwich panel is difficult to construct when filled with rock wool, and pollutes the environment. The fibers are split into extremely fine element fibers, which can be suspended in the atmosphere and water Contamination continues for weeks and months
The cold-formed thin-walled light steel wall enclosure structure filled with rigid foamed polyurethane is also difficult to construct, pollutes the environment, and is harmful to the human body.
[0003] When the general gypsum-based thermal insulation mortar is used in the production of cold-formed thin-walled light steel structure housing industry, due to its poor water retention and poor cohesion in the mortar, it is often not directly sprayed by machine, even if it is sprayed by machine, there will be pipe blockage and spraying Rear sagging, slipping and other phenomena

Method used

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  • A desulfurized gypsum-based machine-sprayed thermal insulation mortar and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] By weight, the specific surface area is 350m 2 / kg calcined desulfurization gypsum powder 83 parts, cement 6 parts, the specific surface area is 360m 2 10 parts / kg of slag powder, 1 part of thixotropic lubricant, 0.25 parts of sodium citrate, 0.3 parts of water retaining agent, viscosity of 100,000 mpa.s, 0.3 parts of α-starch, 0.2 parts of polyvinyl alcohol, vinyl acetate- Put 0.8 parts of ethylene copolymer latex powder into a multifunctional dry powder mixer, mix and stir for 10 minutes to obtain a uniformly mixed thermal insulation mortar masterbatch, then put the masterbatch into a mortar mixer, add 70 parts of water and mix for 3 minutes, the mixer speed 60 rev / min, then add 1.9 parts of EPS granules, the mixer speed is 60-80 rev / min, and stir for 5 minutes to obtain gypsum-based rubber powder EPS granule heat preservation machine spray mortar.

Embodiment 2

[0021] By weight, the specific surface area is 350m 2 / kg calcined desulfurization gypsum powder 79 parts, cement 8 parts, the specific surface area is 360m 2 12 parts / kg of slag powder, 1 part of thixotropic lubricant, 0.25 parts of sodium citrate, 0.2 parts of water retaining agent, viscosity of 100,000 mpa.s, 0.4 parts of α-starch, 0.3 parts of polyvinyl alcohol, vinyl acetate- Put 0.6 parts of ethylene copolymer latex powder into a multifunctional dry powder mixer, mix and stir for 10 minutes to obtain a uniformly mixed thermal insulation mortar masterbatch, then put the masterbatch into a mortar mixer, add 70 parts of water and mix for 3 minutes, the mixer speed 60 rev / min, then add 1.9 parts of EPS granules, the mixer speed is 60-80 rev / min, and stir for 5 minutes to obtain gypsum-based rubber powder EPS granule heat preservation machine spray mortar.

Embodiment 3

[0023] By weight, the specific surface area is 350m 2 / kg calcined desulfurization gypsum powder 78 parts, cement 10 parts, the specific surface area is 360m 2 10 parts / kg of slag powder, 1.5 parts of thixotropic lubricant, 0.25 parts of sodium citrate, 0.2 parts of water retaining agent, viscosity of 200,000 mpa.s, 0.5 parts of α-starch, 0.4 parts of polyvinyl alcohol, vinyl acetate- Put 0.6 parts of ethylene copolymer latex powder into a multifunctional dry powder mixer, mix and stir for 10 minutes to obtain a uniformly mixed thermal insulation mortar masterbatch, then put the masterbatch into a mortar mixer, add 70 parts of water and mix for 3 minutes, the mixer speed 60 rpm, and then add 1.0 parts of EPS particles, the mixer speed is 60-80 rpm, and stir for 5 minutes to obtain gypsum-based rubber powder EPS particle insulation machine spray mortar.

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Abstract

The invention discloses a desulfurized gypsum base machine-sprayed thermal insulation mortar and a preparation method thereof, and relates to the field of composite thermal insulation materials. The mortar comprises the following components in parts by weight: 65 to 85 parts of calcined desulfurized gypsum powder, 5 to 10 parts of cement, 10 to 20 parts of slag micropowder, 0 to 2.5 parts of thixotropic lubricant, 0.8 to 2.2 parts of EPS particle, 0.4 to 1 part of redispersible emulsion powder, 0.2 to 0.8 part of water retaining agent, 0.2 to 0.8 part of alpha-starch, 0.05 to 0.35 part of gypsum retarder, 0.1 to 0.5 part of polyvinyl alcohol, and 50 to 80 parts of water. The preparation method is simple, the cost is low, and the thermal insulation mortar has a good thermal insulation performance, is environment-friendly and energy saving, and is suitable for machine spraying operation.

Description

technical field [0001] The invention relates to the field of composite thermal insulation materials, in particular to a desulfurized gypsum-based machine-sprayed thermal insulation mortar and a preparation method thereof. Background technique [0002] The cold-formed thin-walled light steel wall enclosure structure of the traditional rock wool insulation sandwich panel is difficult to construct when filled with rock wool, and pollutes the environment. The fibers are split into extremely fine element fibers, which can be suspended in the atmosphere and water Contamination continues for weeks and months. The cold-formed thin-walled light steel wall enclosure structure filled with rigid foamed polyurethane is also difficult to construct, pollutes the environment, and is harmful to the human body. [0003] When the general gypsum-based thermal insulation mortar is used in the production of cold-formed thin-walled light steel structure housing industry, due to its poor water ret...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B7/02C04B16/06C04B18/14C04B22/14C04B24/06C04B24/26C04B24/38C04B103/46
CPCC04B28/144C04B2103/465C04B2111/00155C04B7/02C04B18/141C04B24/06C04B24/383C04B24/2623C04B24/26C04B16/0666C04B22/143Y02W30/91
Inventor 方有春仇多宏程佳丁益
Owner 安东投资控股集团有限公司