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Composite expanded and vitrified microbead heat-insulation mortar slab with ceramsite-reinforced surfaces and production method thereof

A technology of expanding vitrified microbeads and thermal insulation mortar, which is applied to chemical instruments and methods, thermal insulation, and layered products of hydraulic substances. It can solve the problems of high surface strength, small overall bulk density, and low thermal conductivity. High strength, solve the contradiction between strength and density, good application prospects

Inactive Publication Date: 2015-04-29
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to improve the defects of low surface strength of expanded vitrified microbead thermal insulation mortar boards currently on the market. It adopts a composite structure, and the inner sandwich layer adopts expanded vitrified microbead thermal insulation mortar, which has small bulk density, low thermal conductivity and good thermal insulation effect. , the upper and lower surfaces are made of expanded vitrified microbead thermal insulation mortar mixed with ultra-light ceramsite, one-time molding, there is no delamination between the plate structure layers, the overall bulk density is small, and the surface strength is high

Method used

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  • Composite expanded and vitrified microbead heat-insulation mortar slab with ceramsite-reinforced surfaces and production method thereof

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Effect test

example 1

[0019] Firstly prepare the dry mix according to the ratio of the upper and lower surface layers and the sandwich layer, wherein the composition and parts by weight of the upper and lower surface layers are: 100 parts of 42.5 grade cement, the particle size is 2-4mm, and the bulk density is less than 300Kg / m 3 100 parts of ultra-light ceramsite, with a bulk density of 100Kg / m 3 100 parts of expanded vitrified microbeads, 2 parts of redispersible latex powder (DN-4100), 0.3 parts of hydroxypropyl methylcellulose ether, 0.4 parts of polypropylene fiber, 0.9 part of wood fiber, Beijing Fortern Technology Co., Ltd. 0.01 parts of air-entraining agent for mortar produced by the company. The composition and parts by weight of the sandwich layer are: 100 parts of 42.5 grade cement, and the bulk density is 100Kg / m 3 100 parts of expanded vitrified microbeads, 2 parts of redispersible latex powder (DN-4100), 0.3 parts of hydroxypropyl methylcellulose ether, 0.4 parts of polypropylene fi...

example 2

[0021] Firstly prepare the dry mix according to the ratio of the upper and lower surface layers and the sandwich layer respectively, wherein the composition and parts by weight of the upper and lower surface layers are: 80 parts of 42.5 grade cement, the particle size is 2-4mm, and the bulk density is less than 300Kg / m 3 120 parts of ultra-light ceramsite, with a bulk density of 100Kg / m 3 80 parts of expanded vitrified beads, 1 part of redispersible latex powder (DN-4100), 0.4 part of hydroxypropyl methylcellulose ether, 0.2 part of polypropylene fiber, 0.8 part of wood fiber, and 0 part of air-entraining agent. The composition and parts by weight of the sandwich layer are: 80 parts of 42.5 grade cement, and the bulk density is 100Kg / m 3 80 parts of expanded vitrified microspheres, 1 part of redispersible latex powder (DN-4100), 0.4 parts of hydroxypropyl methylcellulose ether, 0.2 parts of polypropylene fiber, 0.8 parts of wood fiber, and 0 parts of air-entraining agent . P...

example 3

[0023] Firstly prepare the dry mixture according to the ratio of the upper and lower surface layers and the sandwich layer, in which the composition and weight parts of the upper and lower surface layers are: 120 parts of 42.5 grade cement, the particle size is 2-4mm, and the bulk density is less than 300Kg / m 3 80 parts of ultra-light ceramsite, with a bulk density of 100Kg / m 3 120 parts of expanded vitrified beads, 3 parts of redispersible latex powder (DN-4100), 0.2 part of hydroxypropyl methylcellulose ether, 0.6 part of polypropylene fiber, 1 part of wood fiber, and 0.02 part of air-entraining agent. The composition and parts by weight of the sandwich layer are: 120 parts of 42.5 grade cement, and the bulk density is 100Kg / m 3 120 parts of expanded vitrified microbeads, 3 parts of redispersible latex powder (DN-4100), 0.2 parts of hydroxypropyl methylcellulose ether, 0.6 parts of polypropylene fiber, 1 part of wood fiber, Beijing Fortern Technology Co., Ltd. 0.04 parts of...

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Abstract

The invention relates to a composite expanded and vitrified microbead heat-insulation mortar slab with ceramsite-reinforced surfaces and a production method thereof. The composite expanded and vitrified microbead heat-insulation mortar slab consists of an upper surface layer, a lower surface layer and a sandwich layer, wherein the sandwich layer is expanded and vitrified microbead heat-insulation mortar; the upper surface layer and the lower surface layer are expanded and vitrified microbead heat-insulation mortar doped with ultralight ceramsite aggregate, wherein the ultralight ceramsite with the bulk density of being lower than 300Kg / m <3> is selected. The mass ratio of the ultralight ceramsite to the expanded and vitrified microbeads is 1: 1. The production method comprises the following steps of: respectively preparing dry blend of the upper surface layer, the lower surface layer and the sandwich layer according to the used proportions, then respectively and uniformly mixing, respectively adding water according to the ratio of 1: 1 of water to each mixture, respectively stirring for 3min, forming a slab in a mould, and adjusting the thickness of the slab according to actual requirements, wherein the thicknesses of the upper surface layer and the lower surface layer are respectively 5-10mm, and the thickness of the sandwich layer is 30-60mm. The heat-insulation mortar slab has the excellent properties of light weight, small heat insulation coefficient, fireproofness, high surface strength and the like.

Description

technical field [0001] The invention belongs to the field of thermal insulation materials for walls, and relates to a method for manufacturing composite expansion vitrified microbead thermal insulation mortar boards with ceramsite-reinforced surfaces. Background technique [0002] Expanded vitrified microbeads are a kind of inorganic lightweight granular material monomer with good thermal insulation performance developed in recent years. Its internal porous cavity, surface vitrified closed, smooth luster, stable physical and chemical properties, light weight, It has excellent properties such as heat insulation, fire prevention, high and low temperature resistance, anti-aging, and low water absorption. It is an environmentally friendly high-performance thermal insulation material. However, due to its low strength, the strength of the expanded vitrified microbead thermal insulation mortar board formed by a large amount of aggregate is low. Contents of the invention [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/80B32B13/02B32B37/15C04B28/00C04B14/02C04B14/24
Inventor 严建华王倩倩刘伟华张红芳张东梅张程浩肖慧李思琦
Owner BEIJING UNIV OF TECH