Adhesives are not only widely used in industrial production, but also can be seen everywhere in life, and even we all use adhesive products more or less. But unlike industrial production and technical research, we often use common names for adhesive products, such as 502 glue, AB glue, white latex, etc. This article will briefly introduce several common types of adhesives.
101 glue, 301 glue, 401 glue and 502 glue
Adhesive 101, Adhesive 301, Adhesive 401 and Adhesive 502 are all one-component instant curing adhesives mainly synthesized from α-cyanoacrylates. They undergo polyaddition reaction under the catalysis of a small amount of water in the air, and are rapidly cured and will be adhered. things stick. Everyone is very familiar with it in life, so we will no longer introduce the application.
107 glue
107 glue is a water-based adhesive based on polyvinyl formal. Because 107 glue has the characteristics of non-flammable, low price and easy to use, it is widely used in construction projects as a base material for construction adhesives and various interior and exterior wall coatings and floor coatings. In 2001, due to the serious excess of formaldehyde content in 107 glue, the Ministry of Construction of the People’s Republic of China included it in the list of eliminated building materials products and banned its use in home decoration.
801 glue
801 glue is an improved product after the national ban on 107 glue (801 and 107 are the names of the specifications and models of glue). It is a production process added in the production of 107 glue, that is, urea is used to condense free formaldehyde into urea aldehyde. The purpose is to Reducing the content of free formaldehyde shows the reduction of irritating odor, but with the existing simple production equipment, free formaldehyde will not be completely condensed, and urea aldehyde is easily reduced to formaldehyde and urea.
901 glue
In a sense, 901 glue is also an improved product of the above-mentioned 107 and 801 glue, and most of its free formaldehyde content also exceeds the national mandatory standards.
903 glue
903 glue is a paste adhesive made of EVA emulsion (polyvinyl acetate-ethylene copolymer emulsion) as the main agent. It is widely used in the bonding of ceramic tile, floor turn, wood line, gypsum board, mosaic and floor leather with cement wall and floor; bonding of benzene board, various table wood, porcelain clothes hook, bakelite and concrete cover; Bonding between porous building materials. 903 glue contains toluene, which is harmful to human body. The use method and performance of environmentally friendly paste construction glue are the same as 903 glue, but it does not contain toluene and other substances that are harmful to human body.
AB glue
AB glue is the name of two-component adhesive. One liquid is the glue, and the other is the hardener. The two liquid phases can be hardened when they are mixed together. They do not need to be hardened by temperature and should be matured. Therefore, it is a kind of room temperature hardening glue, which is sometimes used for modeling. Generally used in industry. Commercially available AB glue with acrylic, epoxy, polyurethane and other components.
all-purpose glue
All-purpose adhesive is a solvent-based neoprene adhesive with good oil, solvent and chemical resistance. Generally, adhesives have obvious selectivity for bonding substrates. Different adhesives need to be used for different bonding substrates. Solvent-based neoprene adhesives are adhesives with a wide range of applications, such as rubber, leather, etc. , fabrics, cardboard, wood-based panels, wood, foam, ceramics, concrete, metal and other self-adhesive or mutual adhesion, so it is also called universal glue. In fact, the real all-purpose glue does not exist, but it has a wide range of applications and is praised for it.
glass glue
Glass glue is a material for bonding and sealing various glass and other substrates. There are two common glues for glass bonding: silicone glue and polyurethane glue, but glass glue usually refers to silicone glue. It is divided into two kinds of acid and neutral (neutral glue is divided into: stone sealant, mildew-proof sealant, fire-proof sealant, pipe sealant, etc.).
