CN101811846B - Polymer vitrified microsphere building heat-insulating mortar - Google Patents

Abstract

The invention discloses a polymer vitrified microsphere building heat-insulating mortar. The preparation of the heat insulating mortar is implemented by the following steps: firstly, preparing a special additive; secondly, preparing mixed cementitous powder; and finally, uniformly mixing the mixed cementitous powder and vitrified microspheres in a weight ratio of 1:0.6 to obtain the polymer vitrified microsphere building heat-insulating mortar. The heat-insulating mortar of the invention, on the premise of meeting national standards in performance, is improved in bonding strength and lowered in manufacturing cost and suitable for use in projects of interior and exterior plastering of mid- and high-rise building walls made of various materials, particularly, projects of old building heat-insulating modification.

Description

A kind of polymer vitrified microsphere building heat-insulating mortar

Technical field

The present invention relates to building material technical field, especially relate to a kind of polymer vitrified microsphere building heat-insulating mortar.

Background technology

Building heat-insulating mortar, as one of heat preserving and insulating material of building external envelope structure, its principle is in the wall plastering mortar, to add the density of aglite with the mortar that alleviates, increases the resistance thermal property of material.It is formed is that light skeletals such as cement gel ramming material and pearlstone, foam beads are formed mostly.But current material exists that the bonding group's of wrapping up in property is poor, and water resistance is poor, and undercapacity falls slag easily, construction trouble and higher defective and the deficiency of cost.

Summary of the invention

In view of this, the object of the present invention is to provide a kind of polymer vitrified microsphere building heat-insulating mortar, under the prerequisite that guarantees other performance National standard, improve cohesive strength, reduce cost of manufacture.

For achieving the above object, polymer vitrified microsphere building heat-insulating mortar of the present invention adopts the following steps preparation:

A. prepare special additive

By weight purchasing following raw material: re-dispersible glue powder, 30; Vltra tears, 6; Starch ethers, 3; Alkali lignin, 6; Naphthalene water reducer, 7; The hydrophobic powder, 6; Toughener, 12; The montmorillenite powder, 30; Said raw material is mixed evenly;

B. preparation mixes glued powder

By weight purchasing following raw material: cement, 550; Flyash, 55; Fly ash micro-sphere, 200; Calcium lime powder, 60; Terra alba, 40; The fibrous sepiolite powder, 50; The special additive of a step preparation, 45; Said raw material is mixed evenly;

C. thermal insulation mortar is mixed

B step gained is mixed glued powder and glass bead to be mixed by 1: 0.6 (weight ratio) and evenly promptly to get polymer vitrified microsphere building heat-insulating mortar;

In a, b, the c step by weight get when material weight error be controlled at ± 5%.

The invention has the beneficial effects as follows:

1, utilize fibrous sepiolite to substitute polypropylene fibre, the splitting resistance of strongthener not only, and give water conservation, tackify, thickening and the flame retardant effect of material, also reduced material material cost;

2, add flyash and montmorillenite, help environmental protection and waste utilization and comprehensive utilization of resources, reduce density, strengthen insulation, improve cohesiveness and play better effect for material product;

3, material of the present invention has inorganic fire-retardedly, and cracking resistance is water-fast, high temperature resistant, freeze-thawing resistant, high-performance such as workability is good;

4, product of the present invention is applicable to the inside and outside insulation plastering engineering of multilayer, Highrise buildings various types of materials body of wall, is specially adapted to old room heat-insulated insulating reform engineering;

5, single component dry powder blend material, scene add water and stir use, easy construction.

Other advantages of the present invention, target and characteristic will be set forth in specification sheets subsequently to a certain extent; And to a certain extent; Based on being conspicuous to those skilled in the art, perhaps can from practice of the present invention, obtain instruction and enlightenment to investigating of hereinafter.

Embodiment

During practical implementation,, can organize and produce specification product as long as purchase a cover mortar mixing equipment.Production is in proper order: the first step, preparation special additive earlier; In second step, preparation mixes glued powder again; In the 3rd step, mix and make thermal insulation mortar of the present invention.Thermal insulation mortar product single component of the present invention is transported the building site, adds water on request and stirs and can use.Specifically, prepare the thermal insulation mortar compound by following method practical implementation in the present embodiment:

1. the raw material that is mixed of the thermal insulation mortar compound of present embodiment making is for mixing glued powder and glass bead.Proportioning is by volume mixed glued powder: glass bead=(V) 1: (V) 4.5.The respective quality ratio is to mix glued powder: glass bead=1: 0.6.320 kilograms/cubic metre of mixed thermal insulation mortar compound loose volume weights.

2. the above-mentioned 1. glass bead described in the step is the dead front type microballon of perlite expanded one-tenth under the certain temperature condition, and unit dry weight is 120 kg/cubic meter.1. the glued powder unit dry weight of the mixing in the step is 900 kilograms/cubic metre; This mixes glued powder batching and proportioning (weight ratio) is: cement, 550; Flyash, 55; Fly ash micro-sphere, 200; Calcium lime powder, 60; Terra alba, 40; The fibrous sepiolite powder, 50; Special additive, 45.Described cement means 42.5 ordinary portland cements; Flyash means I level flyash; Fly ash micro-sphere is the high-precision microballon of flyash, means the cenosphere that screening is come out in the flyash processing; Sepiolite powder means the III level sepiolite powder after the fibrous processing, fibre content 50%.

3. the alleged special additive of above-mentioned 2. step, its batching and proportioning (mass ratio) are: re-dispersible glue powder, 30; Vltra tears, 6; Starch ethers, 3; Alkali lignin, 6; Naphthalene water reducer, 7; The hydrophobic powder, 6; Toughener, 12; The montmorillenite powder, 30.Wherein, the montmorillenite powder is the soft mineral of local a kind of argillaceous.Starch ethers can adopt the ether of cellulose replacement.Toughener is a cement intensifier.

The mixed thermal insulation mortar for building that makes of present embodiment, performance can reach: tap density=320kg/m ³Ultimate compression strength>=0.4Mpa; Pressure is cut cohesive strength>=0.55Kp; Thermal conductivity≤0.085w./m.k.; Shrinking percentage is low≤and 0.3%.Meet " GB/T 20473-2006 " GB II grade standard.Use conventional mortar mixing and blending machine through certain company, press the building heat-insulating mortar that the foregoing description content tissue is produced, formed the industrial scale of producing 1 ten thousand stere per year.Product is guaranteeing that mortar has under the prerequisite of light weight, heat-insulating property, also must have performances such as intensity, denseness, caking ability, the workability of general plastering mortar be good.For strengthening the cohesive strength of cement gel ramming material, add polymkeric substance re-dispersible glue powder and the starch ethers that strengthens water-keeping thickening; For improving the splitting resistance of material, add the fibrous sepiolite powder and substitute costliness and be difficult for the dispersive man-made fiber; For the component that increases light skeletal, reduce cost, add flyash and coal fly ash hollow micro bead.The present invention has chosen best proportioning; Science has been grasped the relation between relation, cohesive strength and the material cost of relation, ultimate compression strength and heat insulation effect between mechanical strength and the density, under the prerequisite that guarantees other performance National standard, has improved the cohesive strength of thermal insulation mortar and has reduced cost of manufacture.

Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Other modifications that those of ordinary skills make technical scheme of the present invention perhaps are equal to replacement; Only otherwise break away from the spirit and the scope of technical scheme of the present invention, all should be encompassed in the middle of the claim scope of the present invention.

Claims (1)

1. a polymer vitrified microsphere building heat-insulating mortar is characterized in that, this kind thermal insulation mortar adopts the following steps preparation:

A. prepare special additive

By weight purchasing following raw material: re-dispersible glue powder, 30; Vltra tears, 6; Starch ethers, 3; Alkali lignin, 6; Naphthalene water reducer, 7; The hydrophobic powder, 6; Toughener, 12; The montmorillenite powder, 30; Said raw material is mixed evenly;

B. preparation mixes glued powder

By weight purchasing following raw material: cement, 550; Flyash, 55; Fly ash micro-sphere, 200; Calcium lime powder, 60; Terra alba, 40; The fibrous sepiolite powder, 50; The special additive of a step preparation, 45; Said raw material is mixed evenly;

C. thermal insulation mortar is mixed

B step gained is mixed glued powder and glass bead to be mixed by weight 1: 0.6 and evenly promptly to get polymer vitrified microsphere building heat-insulating mortar;

In a, b, the c step by weight get when material weight error be controlled at ± 5%.