CN-122011961-A - High-performance ceramic tile adhesive and preparation method thereof

CN122011961ACN 122011961 ACN122011961 ACN 122011961ACN-122011961-A

Abstract

The invention provides a high-performance tile adhesive and a preparation method thereof, belonging to the technical field of building materials and aiming at solving the problem that the traditional tile adhesive cannot systematically meet the comprehensive requirements of high-performance tile adhesive on open time, sagging resistance, strength and construction workability all the day, wherein the high-performance tile adhesive comprises HPMC, polybasic starch ether, sagging resistance agent and dispersing agent, and the synergistic enhancement of various performances is realized through synergistic compounding of the polybasic starch ether, sagging resistance agent and high-low temperature stable dispersing agent.

Inventors

LI YUYANG
WANG CONGYING
DUAN XIANGLONG
HU XIN
Yin Qiulu

Assignees

重庆鹏凯精细化工有限公司

Dates

Publication Date: 20260512
Application Date: 20260312

Claims (5)

1. The high-performance ceramic tile adhesive is characterized by comprising (by mass) 1 (0.1-0.2): 0.02-0.04): 0.01:0.04, HPMC, polynary starch ether, anti-sagging agent and dispersing agent; The HPMC comprises cellulose, liquid alkali, chloromethane and propylene oxide, and the molar ratio of the HPMC to the liquid alkali to the chloromethane to the propylene oxide is 1:2.32:2.09:0.46.
2. A high performance tile adhesive as set forth in claim 1 wherein said poly starch ether comprises one or more of a mono-starch ether, a di-starch ether, and a tri-starch ether.
3. A high performance tile adhesive as set forth in claim 1 wherein said sag resistant agent comprises one or more of polyacrylamide, sodium polyacrylate, polyethylene oxide, polyethylene glycol.
4. A high performance tile adhesive as set forth in claim 1 wherein said dispersant comprises one or more of sodium gluconate, sodium tripolyphosphate, sodium pyrophosphate.
5. The method for preparing the tile adhesive according to claim 1, comprising the following steps: Step 1, gradually heating cellulose, liquid alkali, chloromethane and propylene oxide to etherification reaction in a reaction kettle according to the molar ratio, wherein the temperature is 60-100 ℃, the reaction time is 120-250min, and the pressure is kept at 1.0-2.5MPa in the reaction process to obtain the low-viscosity hydroxypropyl cellulose ether slurry; s2, adding the etherified crude product into centrifugal washing equipment, using hot water at 80-95 ℃ to realize salt removal under the action of high-speed centrifugal washing, and subsequently improving the compactness through chilled water at-10-0 ℃ to enable the product to reach proper bulk density; s3, drying the intermediate product in the step S2 by using an air flow drying tower at 100-120 ℃, and sieving the dried product by using 80-120 meshes to obtain the hydroxypropyl methylcellulose with high gel temperature and low ash content; S4, adopting air flow mixing equipment, putting the hydroxypropyl methylcellulose prepared in the step S3, the multi-starch ether, the sag resistance agent and the high-low temperature stable dispersing agent into a mixer according to a specific proportion, controlling the mixing rotating speed and time, mixing for 3 times, wherein the first pressure is 1.0-1.3 Mpa, the interval is 3min, and the second pressure is more than 1.0Mpa, and carrying out full and uniform physical mixing.

Description

High-performance ceramic tile adhesive and preparation method thereof Technical Field The invention belongs to the technical field of building materials, and particularly relates to a high-performance tile adhesive and a preparation method thereof. Background The ceramic tile adhesive is used as an important building decoration material adhesive, and the performance of the ceramic tile adhesive directly influences the construction efficiency, the engineering quality and the long-term durability. Hydroxypropyl methylcellulose (HPMC) is an indispensable key additive in tile adhesives, and mainly plays roles in water retention, thickening and improving workability. With the continuous improvement of the requirements of the building industry on the material performance, especially under complex climatic conditions and severe construction environments, the market demand for high-performance ceramic tile adhesives is growing. Conventional HPMC has a relatively low gel temperature. In cement-based tile adhesive systems, particularly in high-temperature environments in summer or low-temperature environments in winter, the viscosity loss is remarkable, the water retention is rapidly reduced, the cement hydration is insufficient, the adhesive strength and the freeze-thawing resistance of the tile adhesive are seriously affected, the stability requirements of high-grade tile adhesives such as C2TE and the like in all-weather construction cannot be met, and in order to improve the performance of HPMC in a certain aspect, modification is usually carried out by adopting a mode of physically blending other additives (such as single starch ether). However, the method often leads to the difficulty in balancing various properties of the modified HPMC product, and generally has the problems of insufficient strength development, substandard water retention, poor anti-slip effect, rough construction hand feeling, poor stability between batches and the like, and cannot systematically meet the comprehensive requirements of high-performance tile adhesive on open time, sagging resistance, strength and construction workability. Accordingly, in view of the above, research and improvement are made on the existing structure and the existing defects, and a high-performance tile adhesive and a preparation method thereof are provided, so as to achieve the purpose of higher practical value. Disclosure of Invention In order to solve the technical problems, the invention provides a high-performance tile adhesive and a preparation method thereof. The invention discloses a high-performance ceramic tile adhesive and a preparation method thereof, and aims and effects of the high-performance ceramic tile adhesive are achieved by the following specific technical means: A specific preparation process of the high-performance tile adhesive comprises the following steps of S1, preparing and feeding raw materials, wherein reactants comprise cellulose, liquid alkali, chloromethane and propylene oxide, and the molar ratio of the reactants is 1:2.32:2.09:0.46. S2, a special etherification process, namely, a closed reaction kettle is gradually heated to the etherification reaction temperature of 60-100 ℃, the etherification reaction is carried out at the temperature of 120-250 min, and the pressure is maintained at 1.0-2.5-MPa in the reaction process, so that the low-hydroxypropyl cellulose ether slurry is prepared. S3, special washing granulation treatment, namely adding the etherified crude product into centrifugal washing equipment, using hot water at 80-95 ℃, realizing salt removal under the action of high-speed centrifugal washing, and improving the compactness through chilled water at-10-0 ℃ to ensure that the product reaches proper bulk density. S4, drying and crushing, namely drying the granulated intermediate product at 100-120 ℃ by using an airflow drying tower, and sieving the dried product by using 80-120 meshes to obtain the hydroxypropyl methyl cellulose with high gel temperature and low ash content. S5, physical mixing, namely, physically mixing the prepared high-performance HPMC pure product, the multi-element starch ether, the anti-sagging agent and the high-low temperature stable dispersing agent according to a specific proportion, wherein the mixing mass ratio is 1 (0.1-0.2) (0.02-0.04) (0.01:0.04). And (3) adopting air flow mixing equipment, putting the HPMC pure product and each additive into a mixer at normal temperature and normal pressure, controlling the mixing rotating speed and time, mixing for 3 times, wherein the first pressure is 1.0-1.3 Mpa, the interval is 3min, and the later 2 times are more than 1.0Mpa, and carrying out full and uniform physical mixing. Wherein the polybasic starch ether comprises one or more of monobasic starch ether, dibasic starch ether and tribasic starch ether, the sagging resistant agent comprises one or more of polyacrylamide, sodium polyacrylate, polyethylene oxide and polyethylene glycol, and the