Water-based adhesive with high polymer, water-soluble resin as the main raw materials, water as the solvent, less odor, environmental protection. With the continuous improvement of people's environmental awareness, water-based adhesives have become the mainstream of the market in recent years. Characteristics of water-based adhesive 1.Applicable to the substrate any kind of adhesive is not omnipotent, a adhesive is only suitable for bonding a certain or a class of specific materials. At present, water-based adhesive is mainly used for polishing paper/paper, PET/paper, BOPP/paper, PVC/paper, plastic/plastic and other substrate bonding. 2.Inherent characteristics Each water-based adhesive has its own "intrinsic properties". The inherent characteristics of water-based adhesives mainly include appearance (product appearance and film appearance), solid content, density, pH value, solvent ratio, opening time, high/low temperature resistance, initial viscosity, curing viscosity, etc. The bonding modes of water-based adhesives are generally divided into three types: machine adhesive, hand adhesive, machine adhesive and hand adhesive. Different bonding modes correspond to different inherent characteristics. For example, when mechanical adhesives are used, the opening time of water-based adhesives is required to be short; When using hand adhesive, the water-based adhesive is required to open for a long time. In terms of high/low temperature resistance, the water-based adhesive is required to bake for 72 hours in a safe range, and then after freezing for 72 hours, the bond strength remains unchanged, without degumming, brittle film and other phenomena. Pay attention to the use of sealant adhesive 1.The operating temperature of water-based sealing adhesive should be above 0 degrees. Otherwise, icing will damage the adhesive performance and even cannot be used. 2.Beware of splashing into the eyes and mouth. If accidentally entered, rinse immediately with clean water; 3.Do not add water in the process of use 4.Do not pour the waste liquid directly into the sewer or river, the remaining residue can be static dry film after solid waste treatment; 5.Storage of water-based sealant generally choose cool, dry and temperature above 0 degrees environment, shelf life is generally 6 months; 6.Screw on the packaging cover of products that are not used up in storage after use to prevent drying out.

Water based polyurethane is a kind of block copolymer containing soft segment and hard segment. The soft segment is composed of oligomer polyols, and the hard segment is composed of polyisocyanate and chain extender. It has excellent wear resistance, oil resistance, low temperature resistance, aging resistance and chemical resistance.At present, the water based polyurethane emulsion on the market is mainly used for leather, adhesives and coatings, and its crosslinked solidifiers are mainly attached to fabrics and rubber and other surfaces to play the role of surface modification or bonding.Generally speaking, the research of polyurethane latex products mainly focuses on a single property such as flexibility and adhesion. However, when polyurethane latex products are used, the comprehensive properties including tensile strength, elongation at break, permanent deformation at break and tear strength are very high. Generally speaking, the research of polyurethane latex products mainly focuses on a single property such as flexibility and adhesion. However, when polyurethane latex products are used, the comprehensive properties including tensile strength, elongation at break, permanent deformation at break and tear strength are very high. Latex products are widely used in the national economy, according to incomplete statistics, different types and different specifications of latex products up to more than 40 thousand, common latex products are condoms, gloves, rubber hose, toy balloons and sponge products, etc., the main raw material for the preparation of latex products is natural latex. Natural latex products have the advantages of good elasticity and flexibility, but there are the following four deficiencies. (1)The heterologous protein in natural latex products will make some people allergic; (2)Natural latex products in the vulcanization process will produce carcinogenic N-nitrosamines; (3)Poor densification of natural latex products and insufficient virus isolation effect will lead to the risk of infection of users. Some studies have shown that natural latex medical surgical gloves cannot prevent the transmission of hepatitis B virus during surgery. (4)The aging resistance of natural latex products is insufficient. Heat, oxygen, light, acid-base compounds and variable metal ions will greatly accelerate the aging of natural latex products, and then make it lose its performance. Waterborne polyurethane latex products can effectively make up for the shortage of conventional natural latex products. Waterborne polyurethane latex products have good biocompatibility and virus barrier properties. Waterborne polyurethane latex is an ideal material to replace natural latex in latex products. The raw materials of waterborne polyurethane latex products, natural latex products and other synthetic latex products belong to ionic type, which can be prepared by the universal latex product molding process. Sinograce Chemical production for know pol...

Differentiated by medium Waterborne polyurethane: A new type of polyurethane system using water instead of organic solvent as dispersion medium, also known as water dispersed polyurethane, water polyurethane or water based polyurethane. Oily polyurethane: polyurethane system with organic solvent as dispersion medium, polyurethane system with thermoplastic linear structure. Distinguish by appearance Waterborne polyurethane is mostly opalescent transparent, blue translucent. Oil-based polyurethane is transparent. According to environmental protection distinction Waterborne polyurethane is based on water as a dispersion medium, VOC (volatile organic compounds) content is very low, minimal environmental pollution; Oily polyurethane uses organic solvent (toluene, xylene, industrial alcohol, etc.) as dispersion medium.Toluene and xylene are important items of product environmental monitoring. Oil-based polyurethane is not environmentally friendly compared with water-based polyurethane in the production, use and waste treatment process. There is a strong pungent smell and organic gas volatilization.

water-base adhesive With the development of society, the quality of glue has been pushed to a high point, which also led to the development of water-based glue. At present, the environmental protection industry is in a stage of rapid development. People pay more and more attention to health and environmental protection issues. The chemical glue industry is also in a stage of rapid change, and water based adhesive gradually begins to become the mainstream of the market. Let's briefly talk about the characteristics of water-based glue: Environment protecting The water-based adhesive is made of high polymer, water-soluble resin and other main raw materials, with water as the solvent. It is non-flammable and easy to clean up. It conforms to FDA, SGS, ROHS and other certifications. Waterborne adhesive can be safely used for packaging of food, medicine, alcohol, tobacco, children's toys and so on. The machine can be cleaned with water after using glue, not only to improve the production environment, but also to ensure the health of production personnel. Safe and reliable In practical application, some packaging and printing enterprises lack sufficient understanding of water-based adhesives, which causes some quality problems. The preparation method and production process of different types of water-based adhesives (semi-oil semi-water and pure water) are different, that is, the application index is different. The most important application indexes of water-based adhesives in packaging and printing industry include bond strength, high/low temperature resistance, moisture resistance and adhesion. Some packaging and printing enterprises reflect: Some water-based adhesives will be degumming soon after gluing; The viscosity is unstable, sometimes the bond is firm, sometimes it is not on; It works well in hot weather, but it doesn't work in cold weather. In fact, these defects occur because of the above four application indicators are not up to standard. And water-based glue, broken paper fiber in more than 90%, strong adhesion, good temperature resistance [at high temperature (60℃), low temperature (-20℃), high temperature and high humidity (60℃, 85%RH) and constant temperature conditions 48h do not unglue foaming]. Versatility and innovation  Water based adhesive products are not only easy to operate, but also widely used. At present, water-based adhesive is mainly used for bonding between UV paper/paper, polished paper/paper, PET/ paper, BOPP/ paper, PVC/ paper, coated paper/gray board, special paper/plastic box, coated paper/gray board and other substrates. Each water-based adhesive has its "inherent characteristics", which mainly include appearance (product appearance and film appearance), solid content, PH value, solvent ratio, opening time, high/low temperature resistance, viscosity, etc. The bonding methods of water-based adhesives are generally divided into three kinds: machine adhesive, hand adhesive, machine adhesive and hand adhesive. Differ...