At present, structural adhesives and glass adhesives are widely used, but there are still many people who do not understand the difference between these two adhesives, so they are also confused when purchasing. Today, let me introduce the difference between structural adhesive and glass adhesive!

1. Sealant

Sealant is a sealing material that guides deformation with the shape of the sealing surface, is not easy to flow, and has a certain adhesiveness. It is an adhesive used to fill configuration gaps for sealing. It has the functions of anti-leakage, waterproof, anti-vibration, sound insulation and heat insulation.

Usually based on dry or non-dry viscous materials such as asphalt, natural resin or synthetic resin, natural rubber or synthetic rubber, etc.; with inert fillers such as talc, clay, carbon black, titanium dioxide and asbestos, and then add Plasticizers, solvents, curing agents, accelerators, etc.

Classification of sealants

The sealant can be divided into three categories: elastic sealant, liquid sealing gasket and sealing putty.

According to the classification of chemical composition, it can be divided into rubber type, resin type, oil-based type and natural polymer sealant. This classification method can infer the characteristics of polymer materials, which are warmth, sealing and adaptability to various media.

Rubber type: This type of sealant is based on rubber. Commonly used rubbers are polysulfide rubber, silicone rubber, polyurethane rubber, neoprene rubber and butyl rubber.

Resin type: This type of sealant is based on resin. Commonly used resins are epoxy resin, unsaturated polyester resin, phenolic resin, polyacrylic resin, polyvinyl chloride resin, etc.

Oil-based type: This type of sealant is based on oil. Commonly used oils are various vegetable oils such as linseed oil, castor oil and tung oil, and animal oils such as fish oil.

According to the classification of application, it can be divided into high temperature resistant type, cold resistant type, pressure resistant type, etc.

According to the classification of film-forming properties, it can be divided into dry adhesion type, dry peelable type, non-dry sticky type and semi-dry viscoelastic type, which is also a commonly used domestic sealant classification method.

According to the classification, it can be divided into construction sealant, vehicle sealant, insulation sealant, packaging sealant, mining sealant and other types.

According to the performance after construction, it can be divided into curing sealant and semi-curing sealant. Among them, curing sealant can be divided into rigid and flexible. Rigid sealant is solid after vulcanization or solidification, and rarely has elasticity. , cannot be bent, and usually the seams cannot be moved; flexible sealants are elastic and soft after vulcanization. The non-curing sealant is a soft solidifying sealant that still maintains a non-drying tackifier after construction and continuously migrates to the surface state.

2. Glass glue

Glass glue is a material for bonding and sealing various glass and other substrates.

Mainly divided into two categories: silicone glue and polyurethane glue (PU). Silicone sealant, which is what we usually call glass glue, is divided into two types: acidic and neutral (neutral glue is divided into: stone sealant, mildew-proof sealant, fire-proof sealant, pipe sealant, etc.

The difference between sealant and glass glue

Glass glue: It is a general term. Silicone glue and polyurethane glue can be commonly known as glass glue.

Sealant: It is distinguished in terms of performance. The function of single finger is sealing. Weather-resistant adhesive, silicone structural adhesive and polyurethane adhesive all have sealing function, but they have other important functions, such as high bonding strength and good weather resistance.

-转自中国玻璃网