阅读说明：本技术 一种多功能砂浆粘结添加剂及其制备方法 (Multifunctional mortar bonding additive and preparation method thereof ) 是由 张敬 于 2021-01-08 设计创作，主要内容包括：本发明涉及一种多功能砂浆粘结添加剂及其制备方法,原料组份的质量份数为：填料10～40份、减水剂0.001～10份、胶粉20～60份,纤维素醚5～20份,触变剂0.001～5份。本申请的多功能砂浆粘结添加剂通过将称取的各种物质分别按要求的比例搅拌混合均匀制得；本申请提供的砂浆粘结添加剂具有多种用途,既可以用于瓷砖粘结砂浆,也可以用于内墙抹灰砂浆等。使用时,先将砂浆粘结添加剂溶于水中,并充分搅拌均匀,然后加入混合均匀的水泥砂浆中搅拌均匀,静置2分钟,再搅拌1分钟即可。本发明提供的砂浆粘结添加剂可以使砂浆的和易性变好,提高砂浆的粘结强度高,改善保水性,减少泌水性,易于施工,减少空鼓、起壳和开裂等。(The invention relates to a multifunctional mortar bonding additive and a preparation method thereof, wherein the multifunctional mortar bonding additive comprises the following raw materials in parts by weight: 10-40 parts of filler, 0.001-10 parts of water reducing agent, 20-60 parts of rubber powder, 5-20 parts of cellulose ether and 0.001-5 parts of thixotropic agent. The multifunctional mortar bonding additive is prepared by respectively stirring and uniformly mixing various weighed substances according to required proportions; the mortar bonding additive provided by the application has multiple purposes, and can be used for both ceramic tile bonding mortar and inner wall plastering mortar. When the mortar adhesive additive is used, the mortar adhesive additive is dissolved in water, is fully and uniformly stirred, is added into the uniformly mixed cement mortar, is uniformly stirred, is kept stand for 2 minutes, and is stirred for 1 minute. The mortar bonding additive provided by the invention can improve the workability of mortar, improve the bonding strength of the mortar, improve the water retention property, reduce bleeding, facilitate construction, reduce hollowing, shelling, cracking and the like.)

1. The multifunctional mortar bonding additive is characterized by comprising the following raw materials in parts by weight: 10-40 parts of filler, 0.001-10 parts of water reducing agent, 20-60 parts of rubber powder, 5-20 parts of cellulose ether and 0.001-5 parts of thixotropic agent.

2. The multifunctional mortar bonding additive according to claim 1, wherein the filler is one or a mixture of two or more of heavy calcium, kaolin, mica powder and alumina.

3. The multifunctional mortar bonding additive of claim 1, wherein the water reducing agent is one or a mixture of two of a polycarboxylic acid water reducing agent and a naphthalene water reducing agent.

4. The multifunctional mortar bonding additive of claim 1 wherein the rubber powder material is VAE rubber powder.

5. The multifunctional mortar bonding additive of claim 1 wherein the cellulose ether is one or a mixture of hydroxyethyl methyl cellulose ether, and carboxymethyl cellulose ether.

6. The multifunctional mortar bonding additive of claim 1 wherein the thixotropic agent is magnesium aluminum silicate.

7. A method of preparing a multifunctional mortar bonding additive, comprising:

weighing the filler, the water reducing agent, the rubber powder, the cellulose ether and the thixotropic agent in parts by mass; sequentially adding the mixture into a stirrer, and fully and uniformly stirring to obtain the multifunctional mortar bonding additive; when the multifunctional mortar is used on site, the multifunctional mortar bonding additive is dissolved in water, is fully and uniformly stirred, is added into the uniformly mixed cement mortar, is uniformly stirred, is kept stand for 2 minutes, and is stirred for 1 minute.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of building materials, in particular to a multifunctional mortar bonding additive and a preparation method thereof.

[ background of the invention ]

In building engineering, mortar is one of the common building materials with large consumption and wide application. The traditional ready-mixed mortar has poor performance stability, such as poor workability and poor water retention of the mortar.

Chinese patent application No. 201710725382.8 relates to a mortar glue, which comprises the following raw materials in parts by weight: 15-30 parts of methyl ethyl cellulose ether; 20-45 parts of methyl hydroxypropyl cellulose ether; 1-5 parts of an AC foaming agent; 10-28 parts of starch ether; 20-30 parts of acrylic rubber powder; and 8-12 parts of triterpenoid saponin. The building mortar glue is used for paving ceramic tiles and the like with cement mortar.

The mortar glue in the current market has the defects of short opening time, poor water retention, poor later strength of the mortar glue, poor bonding, hollowing, cracking, falling, unstable performance of the mortar glue and the like, and brings a plurality of problems for building constructors.

The foaming agent AC is azodicarbonamide, so that a large amount of bubbles are easily generated in the mortar, the mortar is not dense enough, and the bonding strength of the mortar body is reduced.

When the magnesium aluminum silicate, the water reducing agent and the cellulose ether are mixed together, gel with a special structure which can be directionally adsorbed and dispersed can be formed through the composite action of inorganic and organic substances. When not stressed, free water in the mortar is converted into bound water; when external force acts, bound water in the mortar can be converted into free water, so that various performances of the mortar are improved. Firstly, the water reducing agent promotes mutual dispersion of cement particles, a flocculation structure is damaged, and wrapped water is released; the molecular structure of the cellulose ether contains a large amount of hydrophilic groups, so that the water released from the mortar is not easy to lose; the aluminum magnesium silicate forms a 'card palace' type three-dimensional space association network structure in water and can play a certain role in restricting moisture. They are mixed together, when an external force acts, the special 'card palace' type reticular structure is destroyed, water molecules form a layer of stable solvated water film on the surface of cement particles, the water film has good lubricating effect, and the sliding resistance among the cement particles can be effectively reduced, so that the fluidity of the mortar is further improved. When the external force is eliminated, the net structure is recovered and is swelled into colloid with certain viscosity in a certain time, and the special 'card palace' net structure gel can reduce the loss of water. Therefore, the thixotropic agent magnesium aluminum silicate, the water reducing agent and the cellulose ether are mixed for use, and the precipitation of water can be effectively reduced, the water retention property of the mortar is improved, the opening time is prolonged, and the bonding strength of the mortar is improved through the composite action of inorganic and organic functional groups. But also can increase the smooth feeling of the mortar and improve the construction property of the mortar.

[ summary of the invention ]

The invention aims to overcome the defects of the prior art and provides a multifunctional mortar bonding additive and a preparation method thereof.

The purpose of the invention is realized by the following technical scheme:

a multifunctional mortar bonding additive comprises the following raw material components in parts by weight: 10-40 parts of filler, 0.001-10 parts of water reducing agent, 20-60 parts of rubber powder, 5-20 parts of cellulose ether and 0.001-5 parts of thixotropic agent.

Preferably, the filler is one or a mixture of more than two of heavy calcium, kaolin, mica powder and alumina.

Preferably, the water reducing agent is one or a mixture of two of a polycarboxylic acid water reducing agent and a naphthalene water reducing agent.

Preferably, the gum powder material is VAE gum powder.

Preferably, the cellulose ether is one or a mixture of two of hydroxyethyl methyl cellulose ether, methyl cellulose ether and carboxymethyl cellulose ether.

Preferably, the thixotropic agent is magnesium aluminum silicate.

The application also provides a method for preparing the multifunctional mortar bonding additive, which comprises the following steps:

weighing the filler, the water reducing agent, the rubber powder, the cellulose ether and the thixotropic agent in parts by mass. Sequentially adding into a stirrer, and stirring thoroughly. When the multifunctional mortar bonding additive is used on site, the multifunctional mortar bonding additive is dissolved in water and is fully and uniformly stirred, then the multifunctional mortar bonding additive is added into the uniformly mixed cement mortar (plastering mortar or tile bonding mortar and the like prepared on site) and is uniformly stirred, the mixture is kept stand for 2 minutes and is stirred for 1 minute.

Compared with the prior art, the invention has the following positive effects:

the mortar bonding additive has multiple purposes, and can be used for ceramic tile bonding mortar, inner wall plastering mortar and the like. According to the invention, the thixotropic agent magnesium aluminum silicate, the water reducing agent and the cellulose ether are mixed for use, and the precipitation of water can be effectively reduced through the composite action of inorganic and organic functional groups, so that the water retention property of the mortar is improved, the opening time is prolonged, the smoothness of the mortar is increased, the constructability of the mortar is improved, and the bonding strength of the mortar can be improved. Solves the problems of short opening time, poor water retention and low bonding strength of mortar glue in the market. The multifunctional mortar bonding additive has the advantages of good workability, high bonding strength, good water retention, reduced bleeding, easy construction, and effective reduction of hollowing, shelling, cracking and the like.

[ detailed description ] embodiments

The following provides a specific embodiment of the multifunctional mortar bonding additive and the preparation method thereof.

The application provides a multifunctional mortar bonding additive and a preparation method thereof.

The mortar bonding additive is a single component and comprises the following substances in parts by mass: 10-40 parts of filler, 0-10 parts of water reducing agent, 20-60 parts of rubber powder, 5-20 parts of cellulose ether and 0-5 parts of thixotropic agent.

Preferably, the filler is one or a mixture of more than two of heavy calcium, kaolin, mica powder and alumina.

Preferably, the water reducing agent is one or a mixture of two of a polycarboxylic acid water reducing agent and a naphthalene water reducing agent.

Preferably, the gum powder material is VAE gum powder.

Preferably, the cellulose ether is one or a mixture of two of hydroxyethyl methyl cellulose ether, methyl cellulose ether and carboxymethyl cellulose ether.

Preferably, the thixotropic agent is magnesium aluminum silicate.

The multifunctional mortar bonding additive is prepared by respectively stirring and uniformly mixing various weighed substances according to required proportions; the mortar bonding additive provided by the application has multiple purposes, and can be used for both ceramic tile bonding mortar and inner wall plastering mortar. When the mortar adhesive additive is used, the mortar adhesive additive is dissolved in water, is fully and uniformly stirred, is added into the uniformly mixed cement mortar, is uniformly stirred, is kept stand for 2 minutes, and is stirred for 1 minute. The mortar bonding additive provided by the invention can improve the workability of mortar, improve the bonding strength of the mortar, improve the water retention property, reduce bleeding, facilitate construction, reduce hollowing, shelling, cracking and the like.

Example 1

The multifunctional mortar bonding additive is a single component and comprises the following substances in parts by mass: 27 parts of filler, 10 parts of water reducing agent, 50 parts of rubber powder, 20 parts of cellulose ether and 3 parts of thixotropic agent.

Example 2

The multifunctional mortar bonding additive is a single component and comprises the following substances in parts by mass: 38 parts of filler, 5 parts of water reducing agent, 40 parts of rubber powder, 15 parts of cellulose ether and 2 parts of thixotropic agent.

Comparative example 1

The additive comprises the following substances in parts by mass: 40 parts of filler, 5 parts of water reducing agent, 40 parts of rubber powder and 15 parts of cellulose ether.

Comparative example 2

The additive comprises the following substances in parts by mass: 40 parts of filler, 40 parts of rubber powder, 15 parts of cellulose ether and 5 parts of thixotropic agent.

Comparative example 3

The additive comprises the following substances in parts by mass: 50 parts of filler, 5 parts of water reducing agent, 40 parts of rubber powder and 5 parts of thixotropic agent.

Comparative example 4

The additive comprises the following substances in parts by mass: 45 parts of filler, 40 parts of rubber powder and 15 parts of cellulose ether.

Comparative example 5

The additive comprises the following substances in parts by mass: 65 parts of filler, 5 parts of water reducing agent and 40 parts of rubber powder.

Comparative example 6

The additive comprises the following substances in parts by mass: 65 parts of filler, 40 parts of rubber powder and 5 parts of thixotropic agent.

Performance testing

The tile bonding mortar was tested for tensile bond strength according to the requirements associated with the trade designation Q31/0120000880C 004. The ceramic tile bonding mortar comprises the following components in percentage by weight: ordinary cement: sand: mortar bond additive: 50 parts of water: 50: 1: 20. the proportion of the inner wall plastering mortar in the test is that the mortar is ordinary cement: sand: mortar bond additive: water 30: 90: 0.5: 19. the material stirring of the ceramic tile bonding mortar and the inner wall plastering mortar is as follows: dissolving the mortar bonding additive in water, fully and uniformly stirring, then adding the uniformly mixed cement mortar, uniformly stirring, standing for 2 minutes, and stirring for 1 minute. And (3) respectively using the uniformly-stirred tile bonding mortar and the inner wall plastering mortar for bonding the face brick and plastering the wall surface, and testing the cracking and hollowing phenomena of the face brick and the wall surface.

The mortar bonding additives of examples 1 to 2 of the present invention and comparative examples 1 to 6 were tested according to the above test methods, and the test results are shown in table 1.

TABLE 1 test Properties

Be used for pasting the face brick with ceramic tile bonding mortar, observe its effect of pasting the face brick after 3 hours and 72 hours, embodiment 1 ~ 2 homoenergetic realizes not ftractureing, does not drop, and the effect is stable, beats also very firmly with the instrument, and wherein it is best to discover embodiment 1 effect, and the contrast has a small amount of hollowing phenomenon. When plastering the inner wall plastering mortar and the wall surface, the hand feeling of the embodiment 1-2 is found to be smooth, the construction is convenient, and the striking with a tool is very stable; the comparative examples 1 to 6 have sticky hand feeling and poor workability, and have a small amount of hollowing when knocked by a tool and low bonding strength.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the concept of the present invention, and these modifications and decorations should also be regarded as being within the protection scope of the present invention.