CN104163601A - Lightweight inorganic insulation mortar and preparation method thereof - Google Patents

Abstract

The invention discloses a lightweight inorganic insulation mortar, which comprises the following raw materials by weight: 40-60 parts of portland cement, 2-4 parts of alum, 0.5-1 part of zinc borate, 1-2 parts of sodium carboxymethyl starch, 30-50 parts of expanded perlite, 0.5-1.5 parts of Vaseline, 5-10 parts of bamboo carbon powder, 2-5 parts of sawdust powder, 2-5 parts of palygorskite clay, 1-2 parts of castor oil and 4-8 parts of composite auxiliary agent. The insulation mortar has the advantages of light mortar unit weight, good thermal insulation performance, saved material cost, reduced construction difficulty and good economic benefit.

Description

A kind of light inorganic heat preserving mortar and preparation method thereof

Technical field

The present invention relates to building material field, be specifically related to a kind of light inorganic heat preserving mortar and preparation method thereof.

Background technology

Thermal insulation mortar is a kind of lagging material for external rendering in buildings, is to using light thermal-insulation particle as light skeletal, adds the dry-mix being comprised of gelling material, anticrack additive and other stopping composition etc.Wherein, inorganic heat insulation mortar has antifreeze, the ageing-resistant excellent properties of energy-conserving profit waste, heat insulating, fire prevention and the cheap features such as price, has the market requirement widely.The unit weight of inorganic heat insulation mortar is an important indicator that determines its performance, and unit weight is larger, and heat-insulating property is relatively poor, and construction material cost is high, has increased difficulty of construction and construction cost.

Summary of the invention

The object of this invention is to provide a kind of light inorganic heat preserving mortar.

The present invention is achieved by the following technical solutions:

A light inorganic heat preserving mortar, is characterized in that, it is that raw material by following weight parts makes:

Silicate cement 40-60, alum 2-4, zinc borate 0.5-1, sodium starch glycolate 1-2, pearlstone 30-50, Vaseline 0.5-1.5, bamboo charcoal powder 5-10, sawdust powder 2-5, palygorskite 2-5, Viscotrol C 1-2, composite assistant 4-8;

Described composite assistant is made by the raw material of following weight part:

Chitosan 3-8, kaolin 4-10, silicon-dioxide 2-4, sodium hydroxide 2-4, ammonium chloride 1-3, cocounut oil acyl diethanolamine 0.5-1, tripoly phosphate sodium STPP 0.5-1, redispersable latex powder 10-15, Tween-80 1-3, Hydroxyethyl acrylate 0.2-0.5;

The preparation method of described composite assistant is:

Chitosan is dissolved in to appropriate 4% aqueous acetic acid, adds kaolin, silicon-dioxide to grind 30min, add successively sodium hydroxide, ammonium chloride after pH is adjusted to neutrality, 60 ℃ are stirred 30min, and pH is adjusted to neutrality, add all the other raw materials under normal temperature, after stirring 30min, spraying is dried, and obtains.

The preparation method of described light inorganic heat preserving mortar, is characterized in that, comprises the following steps:

(1) alum and pearlstone are mixed to rear 680-780 ℃ of calcining 1h, add Vaseline and Viscotrol C after cooling, after stirring, 60-80 ℃ of insulation 3h, obtains component A;

(2) bamboo charcoal powder, sawdust powder and palygorskite are mixed to rear grinding evenly, cross 200 mesh sieves, obtain B component;

(3) component A, B component are mixed with all the other raw materials, after stirring and get final product.

Advantage of the present invention is:

1. temperature stability and chemical stability are good, and unit weight is less, and thermal conductivity is little, and heat-insulating property is good, meet relevant national standard requirement;

2. good endurance, good with the avidity of body of wall, matches with the life-span of main wall body;

3. fire resistance is superior, and splitting resistance is good.

Embodiment

Non-limiting examples of the present invention is as follows:

The preparation of embodiment 1 thermal insulation mortar

A light inorganic heat preserving mortar, is prepared from by the component raw material of following weight (kg):

Silicate cement 50, alum 3, zinc borate 0.6, sodium starch glycolate 1.5, pearlstone 40, Vaseline 1, bamboo charcoal powder 7, sawdust powder 4, palygorskite 4, Viscotrol C 1.5, composite assistant 6;

Wherein, composite assistant is made by the raw material of following weight (kg):

Chitosan 5, kaolin 6, silicon-dioxide 3, sodium hydroxide 3, ammonium chloride 2, cocounut oil acyl diethanolamine 0.8, tripoly phosphate sodium STPP 0.6, redispersable latex powder 12, Tween-80 2, Hydroxyethyl acrylate 0.3.

The preparation method of composite assistant:

Chitosan is dissolved in to appropriate 4% aqueous acetic acid, adds kaolin, silicon-dioxide to grind 30min, add successively sodium hydroxide, ammonium chloride after pH is adjusted to neutrality, 60 ℃ are stirred 30min, and pH is adjusted to neutrality, add all the other raw materials under normal temperature, after stirring 30min, spraying is dried, and obtains.

The preparation method of light inorganic heat preserving mortar comprises the following steps:

(1) alum and pearlstone are mixed to rear 680-780 ℃ of calcining 1h, add Vaseline and Viscotrol C after cooling, after stirring, 60-80 ℃ of insulation 3h, obtains component A;

(2) bamboo charcoal powder, sawdust powder and palygorskite are mixed to rear grinding evenly, cross 200 mesh sieves, obtain B component;

(3) component A, B component are mixed with all the other raw materials, after stirring and get final product.

During use, by weight thermal insulation mortar: water=1:1.2, add water and mix.

The performance test of embodiment 2 thermal insulation mortars

According to GB/T 20473-2006, the thermal insulation mortar of embodiment 1 is carried out to performance test, record the performance perameter of thermal insulation mortar in Table 1.

The performance perameter of table 1 thermal insulation mortar

Claims (2)

1. a light inorganic heat preserving mortar, is characterized in that, it is that raw material by following weight parts makes: silicate cement 40-60, alum 2-4, zinc borate 0.5-1, sodium starch glycolate 1-2, pearlstone 30-50, Vaseline 0.5-1.5, bamboo charcoal powder 5-10, sawdust powder 2-5, palygorskite 2-5, Viscotrol C 1-2, composite assistant 4-8;

Described composite assistant is made by the raw material of following weight part:

Chitosan 3-8, kaolin 4-10, silicon-dioxide 2-4, sodium hydroxide 2-4, ammonium chloride 1-3, cocounut oil acyl diethanolamine 0.5-1, tripoly phosphate sodium STPP 0.5-1, redispersable latex powder 10-15, Tween-80 1-3, Hydroxyethyl acrylate 0.2-0.5;

The preparation method of described composite assistant is:

Chitosan is dissolved in to appropriate 4% aqueous acetic acid, adds kaolin, silicon-dioxide to grind 30min, add successively sodium hydroxide, ammonium chloride after pH is adjusted to neutrality, 60 ℃ are stirred 30min, and pH is adjusted to neutrality, add all the other raw materials under normal temperature, after stirring 30min, spraying is dried, and obtains.

2. the preparation method of a kind of light inorganic heat preserving mortar according to claim 1, is characterized in that, comprises the following steps:

(1) alum and pearlstone are mixed to rear 680-780 ℃ of calcining 1h, add Vaseline and Viscotrol C after cooling, after stirring, 60-80 ℃ of insulation 3h, obtains component A;

(2) bamboo charcoal powder, sawdust powder and palygorskite are mixed to rear grinding evenly, cross 200 mesh sieves, obtain B component;

(3) component A, B component are mixed with all the other raw materials, after stirring and get final product.