Waterproof coating for mineralizing pool
on the surface of ceramic tile, check whether the filler in the gap of ceramic tile is complete first (if the filler in the gap of ceramic tile is not complete, fill it completely with methylene glue, and then waterproof it with stone tile type waterproof guard)
the exterior wall coating can be made waterproof by transparent waterproof repair glue
the proct will penetrate into the base, making the base waterproof. It is suggested that the proct be constructed in a dry place. The drier the base surface is, the deeper the proct can penetrate. If the base surface is full of moisture and has high density, the material can not penetrate well. As for the principle of waterproof and plugging, if the source of water leakage is not blocked, water will only penetrate into the wall for a long time, and it will leak out from other parts of the wall when the water reaches a certain degree. And can not solve the fundamental problem, only in the roof or exterior wall spray water repellent, so that water can not penetrate into the wall directly flow away, can completely solve the problem.
Universal waterproof coating, also known as JS waterproof coating. It is a mixture of acrylic emulsion and auxiliaries and a mixture of cement, sand and mineral powder, which is made up of two components waterproof material according to specific proportions. After mixing the two materials, a chemical reaction takes place, which can not only form a waterproof surface coating, but also penetrate into the interior of the substrate to form a crystal to prevent the water from passing through, so as to achieve a double waterproof effect· Walls and floors of indoor and outdoor cement concrete structures and mortar masonry structures
· the floors and walls of toilets, bathrooms, kitchens, floors, balconies and pools are waterproof
· it is used for plastering before paving stone, ceramic tile, wood floor, wallpaper and gypsum board to prevent moisture and salt pollution· The substrate must be firm, flat, clean, and free of st, grease, wax, release agent and other debris
· if there are pores, cracks and inequality defects on the base surface, it is necessary to repair and level them with cement mortar in advance. It is recommended to paste plastic strips on the expansion joints, add a layer of non-woven fabric to the joints, and fill the pipe orifice with leibangshi grouting material
· the internal and external corners should be painted into arc shape (or V-shape)· Ensure that the base surface is fully wet without open water
· the newly poured concrete surface (including plastering surface) shall be completely dried before construction· Stirring: first pour the liquid into the container, then slowly add the powder, and fully stir for 3-5 minutes to form a uniform slurry without raw powder and particles It is better to use a blender)
· brushing: brush directly on the base surface with a brush or roller brush, with uniform force and no missing brush; Generally, it needs to be painted twice (according to the use requirements), and the thickness of each painting is not more than 1 mm; After the previous one is slightly dry and firm, the next one is applied (just not stick to hands, generally 1-2 hours apart), and the front and rear vertical cross brushing is applied, with the total thickness of 1-2mm; If the coating has been cured, wet it with water before brushing another layer
Maintenance: after 24 hours of construction, it is recommended to use wet cloth to cover the coating or spray spray to maintain the coating.
· protection: please take protection measures such as no trampling, rain, sun exposure, sharp injury, etc. before completely drying after construction
· inspection (closed water test): Please store water for 48 hours after the waterproof layer is dry (at least 24 hours in summer and 48 hours in winter) to check whether the waterproof construction is qualified. The light wall should be tested by water spraying· Please carry out the construction according to the above base treatment and use method
· it is suitable for use in the environment of 5 ℃ - 40 ℃, avoiding high temperature, low temperature and outdoor rainy weather
· single layer brushing should not be too thick, especially at the nozzle and corner to prevent cracks
· after construction, please keep a ventilated environment to make the waterproof layer dry
· please avoid damaging the waterproof layer ring the later construction
· it is forbidden to use pure cement paste when laying ceramic tiles on the waterproof layer, and the construction should be carried out according to the requirements of ceramic tiles with gaps. It is recommended to use leibangshi ceramic tile glue or leibangshi mortar glue< Reference dosage: 1.5-2.0 kgm2 under normal conditions; The actual consumption is determined by the use, the use position, the roughness of the base surface and the environmental factors. For details, please go to the purchasing office< Proct transportation: according to the requirements of non dangerous goods. Prevent rain, sun exposure, freezing extrusion, collision, inversion, package damage, etc< Storage method: store in a cool and dry place< The shelf life of the original package is 12 months under normal storage conditions
inorganic mineral coating is composed of pure mineral filler, non fading inorganic pigment and liquid potassium silicate, which can Silicify with the wall and make the color adhere to the wall permanently
inorganic mineral coatings are nontoxic, odorless and non irritating eco-friendly finishing materials, which do no harm to the environment and human health. In general, the service life is 3 ~ 5 times longer than that of organic latex coatings
here is an inorganic mineral waterproof matt coating, Gefen coating
Gefen coating is from Spain. Its raw material is natural high-purity limestone, which is unique in Spain. It is different from the chemical raw material composition of latex paint on the market. It fundamentally eliminates the generation of harmful substances, without any chemical additives, VOC, formaldehyde, heavy metals and other harmful substances. The latest nano material graphene is added to the coating to solve the problem that graphene is difficult to disperse in water, which gives the coating better adhesion, flexibility, scrub resistance and hardness. Graphene forms a network framework structure inside the coating, which combines the layers closely, effectively prevents the coating from cracking and falling off, reces the times of wall maintenance, and gives full play to the natural advantages of graphene
Gefen coatings has international authoritative certification, cradle to cradle, French a +, Finnish M1, German agbb certification, etc.
this kind of material is not easy to buy. Don't believe the permeable crystalline waterproof coating provided by low-end brands in the waterproof market, which is basically the same name of kengdai and has no actual performance. It is suggested to consult the big brands in the home decoration waterproof instry first to see how to buy the waterproof coatings with real crystal penetration function. These big brands have proced such procts, and can only provide them to the market without big atmosphere.
Difference between waterproof slurry and waterproof coating:
1. Difference in meaning
waterproof slurry is a two-component waterproof material specially used for building waterproof, which is composed of powder part and liquid part in a certain proportion
waterproofing slurry, namely acrylic waterproof coating, is a single component water-based emulsion paint made from YISHION acrylic polymer emulsion and other additives. p> The waterproof slurry can be divided into general waterproof slurry and flexible waterproof slurry. General purpose waterproof slurry is mainly used in home decoration and indoor waterproof. Such as kitchen, toilet, balcony, ground and wall of underground garage, etc; Flexible waterproof slurry can be used in home decoration waterproof, building roof waterproof and so on. Especially when it is used for pipe mouth waterproof, its advantage is more obvious
waterproof coatings are divided into polyurethane waterproof coatings and polymer cement-based waterproof coatings. Polyurethane waterproof coatings are generally made of polyurethane and coal tar as raw materials, which are toxic; Polymer cement based waterproof coating is made up of many kinds of waterborne polymers and high quality cement mixed with various additives. It is non-toxic and environment-friendly. p> The waterproof slurry can achieve the functions of waterproof, anti-seepage and protection. The proct has super flexibility, excellent adhesion, strong anti osmotic pressure, excellent water repellent performance in the upstream and downstream water surface, short curing and drying time, convenient construction, mildew resistance, alkali resistance, weather resistance, non-toxic, harmless and pollution-free
the waterproof coating has good temperature adaptability, simple operation, easy repair and maintenance, and certain extensibility, elastic plasticity, crack resistance, impermeability and weatherability
waterproof agent is a kind of waterproof additive added to concrete, cement mortar and other materials to increase its waterproof performance.
1. Experimental part
1.1 raw materials and reagents
castor oil (C1O): chemically pure, Tianjin Standard Technology Co., Ltd; 2,4-toluene diisocyanate (TDI): chemically pure, Wuhan Jiangbei Chemical Reagent Co., Ltd; MOCA: chemical purity, Wujin Chemical Plant, Jiangsu Province; Dibutyltin dilaurate: chemically pure, Sinopharm Chemical Reagent Co., Ltd; Toluene and xylene: analytically pure, Tianjin Xintong Fine Chemical Co., Ltd; Epoxy resin (E-44): Yueyang Petrochemical Plant; Bromophenol blue indicator, 0.1mol/l, self-made; Dibutylamine toluene solution, 1 mol / L, self-made; Sodium hydroxide: analytically pure, Shanghai Shanhai engineering group experimental plant 2; Lead chloride: analytical purity, Tianjin comeo chemical reagent development center; Glycerol: analytically pure, Sinopharm Chemical Reagent Co., Ltd; Trimethylolpropane (TMP): analytically pure, Jilin Chemical Instry Company; Calcium hydroxide; Calcium oxide; Hydrochloric acid; Its_ He is a good assistant< (1) preparation of catalyst: take lead chloride into beaker, add water to dissolve, stand for 10 minutes, and take the supernatant for standby. Weigh 5 g NaOH and dissolve it in a 50 ml beaker. Drop the prepared NaOH solution into the clear solution of PbCl2. When the pH value is 7, stop adding NaOH. The white precipitate was extracted and decomposed by heating in a crucible. The catalyst is obtained< (2) alcoholysis: weigh a certain amount of castor oil in a three port flask, add a small amount of PbO (0.04g lead per kilogram) and a certain proportion of glycerol (or TMP), heat and stir, and react at 220-240 ℃ for 2h. When the reaction reaches the end point, castor oil will change from yellow to dark red [at this time, the alcohol tolerance is the highest, about 1: (3.4-4)], stop the reaction, cool down, and store in a sealed container
1.2.2 preparation of prepolymer; Cool down to 50 ℃ and reclaim for standby
1.2.3 preparation of component B
weigh a certain amount of dehydrated and dried epoxy resin, catalyst, stabilizer, filler and curing agent respectively, and add a certain amount of leveling agent, defoamer and other additives at the same time, stir them evenly and keep them sealed
1.2.4 curing of prepolymer
mix the prepolymer and component B according to a certain proportion, pour them into the mold, cure them under the required curing conditions, form a film and then reserve them, and measure the surface drying time
1.3 material performance test and structure characterization
NCO content was determined by di-n-butylamine method; The solid content of the coating was measured by the surface plate method; The hardness of the coating was determined according to GB / t6739-1988; Viscosity test: in accordance with GB / t1723-1979 coating viscosity determination method; The samples were coated with KBr wafer, and the infrared spectra of the samples were measured by nicolet-impact 420 Fourier transform infrared spectrometer; Water resistance: measured by normal pressure water absorption method; Mechanical property test: universal material testing machine, tensile speed 50 mm / min, clamping distance 20 mm; Wear resistance test: film wear-resistant testing machine, the chord length of the grinding pit indicates the wear-resistant effect; Adhesion test: according to iso2409-1972 (E); Chemical reagent resistance: according to GB / t1763-1988< Results and discussion
2.1 effect of reaction time on - NCO content in prepolymer
the effect of reaction time on - NCO content in prepolymer is shown in Figure 1
it can be seen from Figure 1 that with the extension of reaction time, the content of - NCO in prepolymer decreases; After reaction for 4 h, the decreasing trend of - NCO content tended to be gentle. The optimal reaction time is about 4 h. If the reaction time is too long, the easy gel will cause inconvenience to proction. If the reaction time is too short, the content of - NCO is high, the toxicity of proct is high, the utilization rate of raw material is low, and the quality of prepolymer is affected.