This article introduces1. What material is epoxy resin? The role and use of epoxy resin (what is epoxy resin used for, the use of epoxy resin)
2, the appearance of epoxy resin properties.
3, epoxy resin is dangerous goods (belong to several types of dangerous goods)?
4. Is epoxy resin toxic? What is the harm to the human body?
1, epoxy resin is a kind of polymer, the molecular formula is (C11H12O3)n, which refers to a class of polymers containing more than two epoxy groups in the molecule. The CAS number of epoxy resin is 61788-97-4, the UN number of epoxy resin is 3082, and the hs code of epoxy resin is 3907300090.
The function and use of epoxy resin
The excellent physical mechanical and electrical insulation properties of epoxy resin, the bonding properties with various materials, and the flexibility of its use process are not available to other thermosetting plastics. Therefore, it can be made into coatings, composite materials, casting materials, adhesives, molding materials and injection molding materials, and has been widely used in various fields of the national economy.
1 The role and use of epoxy resin in the coating industry. It can be made into various varieties with different characteristics and uses. Epoxy resin coatings are mainly used as anti-corrosion paint, metal primer, insulating paint, but the coatings made of heterocyclic and alicyclic epoxy resins can be used outdoors.
2. The role and use of epoxy resin in adhesive industry.
Epoxy resin for various metal materials such as aluminum, iron, copper; Non-metallic materials such as glass, wood, concrete, etc.; And thermosetting plastics such as phenolic, amino, unsaturated polyester, etc. have excellent bonding properties, so they are known as versatile adhesives. Epoxy adhesive is an important type of structural adhesive.
3 Role and use of epoxy resin in electronic and electrical industry. Due to the unique advantages of epoxy resin such as high insulation performance, high structural strength and good sealing performance, it has been widely used in the insulation and packaging of high and low voltage electrical appliances, motors and electronic components, and has developed rapidly.
Epoxy resin and epoxy resin adhesive itself is non-toxic, but due to the addition of solvents and other toxic substances in the preparation process, many epoxy resins are "toxic", and the domestic epoxy resin industry is through water-based modification, avoiding addition and other ways to maintain the "non-toxic" color of epoxy resin. Epoxy resins are generally used at the same time as additives to obtain application value. Additives can be selected according to different uses, commonly used additives have the following categories: (1) curing agent; (2) modifier; (3) packing; (4) diluent; (5) Others. Among them, curing agent is an essential additive, whether it is used as adhesive, coating, castable, it is necessary to add curing agent, otherwise the epoxy resin can not cure.
2, epoxy resin epichlorohydrin and bisphenol A or polyol condensation products. Appearance yellow or transparent solid or liquid, due to the chemical activity of the epoxy group, it can be used to open a variety of compounds containing active hydrogen, curing crosslinking to form a network structure, is a thermosetting resin.
3. Is epoxy resin a dangerous chemical? Epoxy resins belong to several types of dangerous goods
According to the 2015 edition of the Dangerous Goods Catalogue, epoxy resins are also divided into two categories, one is a solid epoxy resin, and the other is a liquid epoxy resin. Solid epoxy resins are not dangerous goods, and liquid epoxy resins belong to the third class of flammable liquids in dangerous goods.
4. Is epoxy resin toxic? What are the hazards of epoxy resin to the human body
Epoxy resin is non-toxic, pure epoxy resin has no harm to the human body. But usually epoxy resin will add additives, some additives are toxic, harmful to the human body. 2. For example, curing agent (such as ethylenediamine), plasticizer (such as butylene phthalate), diluent (such as acetone) and other substances will be added when epoxy resin is cured. During the curing process, these substances will react with each other, which may produce harmful substances. It leads to allergic skin diseases, mainly manifested as skin pruritus, erythema, papules, herpes and other symptoms; There may also be headaches, nausea, vomiting, loss of appetite, eyelid edema, burning eyes and other symptoms.
