CN109704661B

CN109704661B - Cement-based capillary crystalline waterproof coating

Info

Publication number: CN109704661B
Application number: CN201910160573.3A
Authority: CN
Inventors: 孙睿; 孙天思
Original assignee: Shanghai Huidang Waterproof Material Co ltd
Current assignee: Shanghai Huidang Waterproof Material Co ltd
Priority date: 2019-03-04
Filing date: 2019-03-04
Publication date: 2022-09-13
Anticipated expiration: 2039-03-04
Also published as: CN109704661A

Abstract

The invention discloses a cement-based capillary crystalline waterproof coating which is prepared from the following raw materials in parts by weight: 45-65% of cement, 30-40% of quartz sand, 0.1-0.3% of cellulose, 0.3-0.5% of fluosilicic acid, 0.02-0.05% of complexing agent, 0.2-0.5% of silica fume, 2-4% of talcum powder, 0.05-0.08% of catalyst, 0.1-0.12% of crystallization auxiliary agent, 0.01-0.02% of calcium stearate, 0.05-0.08% of micro-expanding agent, 0.1-0.5% of binding agent, 5-8% of fast cement, 0.09-0.28% of affinity agent and 1-2% of penetrating agent. The construction lubricity is increased, the water retention is increased, the hydration water of cement is ensured, the binding power is increased, the solidification speed and the hardness are improved, and the rapid forming is realized.

Description

Cement-based permeable crystallization type waterproof coating

Technical Field

The invention relates to the technical field of paint preparation, in particular to a cement-based permeable crystallization type waterproof paint.

Background

The cement-based permeable crystallization type waterproof coating in China is uneven in quality, most of the cement-based permeable crystallization type waterproof coating belongs to low-grade materials with low price and poor performance, a plurality of fake goods are not lacked, the price is good and is high, so that a permeable crystallization user cannot reflect the waterproof coating, the market application is not smooth, other materials are used instead, the market of the inorganic environment-friendly material with the coating and the secondary protection of the coating crystallization is gradually reduced, the proper share is lost, the building waterproof field is a good product with good development prospect, the cost for frequently maintaining other materials is brought to the building waterproof market, and the service life of a building is shortened.

The cement-based permeable crystallization type waterproof coating supplied in the current market has several defects and hidden dangers: poor construction performance, poor bonding performance, long maintenance time, unobvious visual effect and shallow penetration depth; the main reasons are that the market is disorderly aimed, the cost is reduced, and the active master batch is not willing to be imported; the quality of the active master batch for reducing the cost is not guaranteed enough; most of the independent research and development do not reach the due depth.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the cement-based capillary crystalline waterproof coating, which has the advantages of increasing construction lubricity, increasing water retention, ensuring water for cement hydration, increasing cohesive force, improving solidification speed and hardness, and making the coating into a product with higher forming speed.

In order to achieve the aim of the invention, the invention adopts the specific scheme that:

a cement-based capillary crystalline waterproof coating is prepared from the following raw materials in parts by weight: 45-65% of cement, 30-40% of quartz sand, 0.1-0.3% of cellulose, 0.3-0.5% of fluosilicic acid, 0.02-0.05% of complexing agent, 0.2-0.5% of silica fume, 2-4% of talcum powder, 0.05-0.08% of catalyst, 0.1-0.12% of crystallization auxiliary agent, 0.01-0.02% of calcium stearate, 0.05-0.08% of micro-expanding agent, 0.1-0.5% of binding agent, 5-8% of fast cement, 0.09-0.28% of affinity agent and 1-2% of penetrating agent.

Further, the preparation method of the cement-based permeable crystallization type waterproof coating comprises the following steps:

(1) preparing an active master batch: respectively measuring the other materials in the formula according to the specified percentage in the formula except the cement, the quartz sand, the double-speed cement and the talcum powder, respectively placing the materials, starting a dry powder mixer, putting the measured materials into the machine at intervals according to the specific gravity, stirring for 30 minutes, opening a discharge port, discharging a plurality of barrels, returning the materials to the machine, fully and uniformly dispersing the materials, then measuring the materials, and bagging the materials into a barrel to obtain active master batch for later use;

(2) preparing quantitative cement, quartz sand, double-speed cement, talcum powder and active master batch according to a coating formula, and putting into a mixing machine at intervals to stir for 30 minutes; opening the discharge port to discharge a few barrels, fully and uniformly dispersing the materials, metering, discharging, packaging and warehousing to obtain the finished cement-based capillary crystalline coating.

The invention has the beneficial effects that:

the talc agent of the invention increases the construction lubricity; cellulose is added to increase the water retention property and ensure the hydration water of cement, and calcium stearate is added to increase the binding power; the cement is fast, so that the setting speed and the hardness are improved; fluosilicic acid and silica fume are added, the penetration depth is increased, the molding is faster, and the performance is better.

Detailed Description

The present invention is further described below by way of specific examples, but the present invention is not limited to only the following examples. Variations, combinations, or substitutions of the invention, which are within the scope of the invention or the spirit, scope of the invention, will be apparent to those of skill in the art and are within the scope of the invention.

Example 1: a cement-based capillary crystalline waterproof coating is prepared from the following raw materials in parts by weight: 45% of cement, 30% of quartz sand, 0.1% of cellulose, 0.3% of fluosilicic acid, 0.02% of complexing agent, 0.2% of silica fume, 2% of talcum powder, 0.05% of catalyst, 0.1% of crystallization assistant, 0.01% of calcium stearate, 0.05% of micro-expanding agent, 0.1% of binder, 5% of double-rapid cement, 0.09% of affinity agent and 1% of penetrating agent.

The preparation method of the cement-based permeable crystallization type waterproof coating comprises the following steps:

(2) preparing quantitative cement, quartz sand, double-speed cement, talcum powder and active master batch according to a coating formula, and putting into a mixing machine at intervals to stir for 30 minutes; opening the discharge port and discharging for several barrels to make it fully and uniformly dispersed, then metering, discharging, packaging and warehousing so as to obtain the invented cement-base permeable crystalline coating finished product.

Example 2: a cement-based permeable crystallization type waterproof coating is prepared from the following raw materials in parts by weight: 50% of cement, 35% of quartz sand, 0.2% of cellulose, 0.4% of fluosilicic acid, 0.035% of complexing agent, 0.35% of silica fume, 3% of talcum powder, 0.065% of catalyst, 0.11% of crystallization assistant, 0.015% of calcium stearate, 0.065% of micro-expanding agent, 0.3% of binder, 6.5% of fast cement, 0.18% of affinity agent and 1.5% of penetrating agent.

(2) preparing quantitative cement, quartz sand, quick-setting cement, talcum powder and active master batch according to a coating formula, and putting into a mixing machine at intervals to stir for 30 minutes; opening the discharge port to discharge a few barrels, fully and uniformly dispersing the materials, metering, discharging, packaging and warehousing to obtain the finished cement-based capillary crystalline coating.

Example 3: a cement-based capillary crystalline waterproof coating is prepared from the following raw materials in parts by weight: 65% of cement, 40% of quartz sand, 0.3% of cellulose, 0.5% of fluosilicic acid, 0.05% of complexing agent, 0.5% of silica fume, 4% of talcum powder, 0.08% of catalyst, 0.12% of crystallization assistant, 0.02% of calcium stearate, 0.08% of micro-expanding agent, 0.5% of binder, 8% of fast-setting cement, 0.28% of affinity agent and 2% of penetrating agent.

(2) preparing quantitative cement, quartz sand, Shuangkui cement, talcum powder and active master batch according to the formula of the coating, and putting into a mixing machine at intervals to stir for 30 minutes; opening the discharge port and discharging for several barrels to make it fully and uniformly dispersed, then metering, discharging, packaging and warehousing so as to obtain the invented cement-base permeable crystalline coating finished product.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The cement-based permeable crystallization type waterproof coating is characterized by being prepared from the following raw materials in parts by weight: 45-65% of cement, 30-40% of quartz sand, 0.1-0.3% of cellulose, 0.3-0.5% of fluosilicic acid, 0.02-0.05% of complexing agent, 0.2-0.5% of silica fume, 2-4% of talcum powder, 0.05-0.08% of catalyst, 0.1-0.12% of crystallization auxiliary agent, 0.01-0.02% of calcium stearate, 0.05-0.08% of micro-expanding agent, 0.1-0.5% of binding agent, 5-8% of fast cement, 0.09-0.28% of affinity agent and 1-2% of penetrating agent, wherein the sum of the contents of the above components is 100%.

2. The cementitious capillary crystalline waterproofing coating according to claim 1 wherein the preparation method of the cementitious capillary crystalline waterproofing coating comprises the following steps:

(1) preparing an active master batch: respectively measuring the other parts of materials in the formula according to the specified percentage of the formula except for cement, quartz sand, double-speed cement and talcum powder, respectively placing the materials, starting a dry powder mixer, putting the measured materials into the mixer at intervals according to the specific gravity, stirring for 30 minutes, opening a discharge port, discharging a plurality of barrels, returning the materials to the mixer, fully and uniformly dispersing the materials, then measuring the materials, discharging and bagging the materials into barrels, and obtaining active master batch for later use;