First, the method of adding gypsum waterproofing agent
①: Internal mixing
1, calculated as 0.5%- 1% of the weight of gypsum powder, it is suggested to add 1% in the experiment to achieve the best experimental effect; 2. After being evenly mixed with water according to the amount determined in the first step, it is directly added into the equipment and stirred with gypsum powder for molding; 3. After the gypsum product is completely dried naturally, the water resistance test can be carried out (generally, it is taken out for testing after soaking for two hours); If it needs to be dried, please leave it for 24 hours before drying, so as to avoid the waterproof agent evaporating with water and losing its waterproof effect due to the high temperature during drying.
②: External spraying
Mix a portion of gypsum waterproofing agent with 5- 10 times of water, spray it on the surface of molded and dried gypsum products with a spray gun, and soak the surface for 3-5s. After drying for 24 hours, the waterproof rate was measured.
③: Soak
Mix a portion of gypsum waterproofing agent with 20-40 times of water, stir it evenly, then pour it into a prepared tank, put the completely dried gypsum product directly into a soaking tank for 3-5 minutes, take it out and air dry naturally, and then measure the waterproofing rate 24 hours later.
Second, the manufacturer recommended
1, Wuxi Zhongyun Building Materials Co., Ltd. is an enterprise specializing in the production of concrete additives, adhesives, putty powder, waterproof materials, energy-saving thermal insulation mortar and decorative materials. Since its establishment, the company has followed the concept of survival by quality and development by reputation, served the vast construction industry and decoration industry at home and abroad, and made every effort to provide every customer with the best quality products and the most satisfactory service. Over the years, the company has maintained close cooperation with many scientific research institutions. At the end of 20 10, the "dry powder building materials technology research and development platform" was established with Tsinghua University Institute of Civil Engineering, which absorbed the technical experience of Europe and America and had strong technical support.
2. Guangzhou Gongshi Chemical Materials Co., Ltd. is a research and development enterprise under Guangzhou Ligao Building Materials Co., Ltd., which is mainly engaged in the research and development and production of building materials additives such as polypropylene fiber, putty powder, tile glue, expansion agent, accelerator, concrete anti-crack waterproof emulsion, etc. In the modern construction industry, these building material additives have * * effects on crack resistance, water resistance, frost resistance, rust resistance and durability of concrete with various substrates under different climatic and environmental conditions.
3. Shandong Juying Waterproof Material Co., Ltd., a growing enterprise, needs our common cultivation. For ten years, Juying has been trudging on the road as always. Behind every product, there are too many dreams and efforts. In the process of development, we are constantly improving ourselves and holding high the monument.
It mainly produces modified asphalt waterproofing membrane, ethylene propylene (polyester) fiber waterproofing membrane, polyvinyl chloride (PVC) waterproofing membrane, thermoplastic polyolefin (TPO) waterproofing membrane, self-adhesive waterproofing membrane, self-adhesive sealant tape, polymer self-adhesive waterproofing membrane (non-asphalt-based), EPDM waterproofing membrane, root resistant membrane, colored glass fiber asphalt shingles and JS waterproofing membrane. Spraying fast-setting rubber asphalt waterproof coating, non-curing rubber asphalt waterproof coating, EVA/PVC waterproof board, protective water storage and drainage board, composite geotextile/geomembrane, dry powder adhesive and other waterproof materials is a key manufacturer of waterproof materials.
The above example is an accessory product used with gypsum, that is, a special waterproof agent for gypsum. It can be combined with gypsum to form polymer, so as to achieve the purpose of waterproof protection. This product has strong applicability and convenient construction, and is a new type of environmental protection gypsum special supporting product commonly used in the market at present. Moreover, we can find that gypsum waterproofing agent is colorless and tasteless, non-toxic and non-corrosive, and it is in a transparent liquid state, which is recommended by many related manufacturers. We can also refer to similar products.