What Is Resin Adhesive?

Resin gum refers to several gums containing resin ( RESINOUS ) components obtained from various shrubs and trees. Resin glue is a glue made of resin, which has the characteristics of ecology and environmental protection.

Resin usually refers to softness when heated

In the paint industry, resins are often referred to as gums [gum damar, gum copal, etc.], but this confusing idiom does not exist in the discussions between artists and scientists. These areas require Use precise and precise words. Gum is insoluble in volatile solvents (alcohol, turpentine, etc.), and the resin will dissolve in these solvents. Starch and similar water-soluble binders generally fall into the same category as gums because they have similar properties and functions. For example, a category of dextrin called British gum is used as the backing for so-called sticky paper. Typical resin gums have the same appearance as resins and are insoluble or insoluble in water, but soluble in alcohol. Resin glue has little or no use in artists' painting materials.

By source:

Resin is divided into natural resin and synthetic resin. Natural resin refers to amorphous organic matter obtained from the secretions of plants and animals in nature, such as

Epoxy resin adhesive generally refers to an adhesive made with epoxy resin as the main component. Generally, epoxy resin adhesive should also include epoxy resin curing agent, otherwise the glue will not be cured.

Epoxy resin can be classified according to its main composition, professional use, construction conditions, and packaging form.

Resin glue type

Epoxy resin is divided into soft glue and hard glue.

1. Epoxy resin:

It is a liquid type, two-component, soft, self-drying soft glue. It is colorless, transparent, and elastic. It can restore its original shape by gently scratching the surface. Suitable for polyester, paper, plastic and other sign decoration.

2. Hard epoxy resin:

It is a liquid type, two-component hard glue, colorless and transparent. It is suitable for metal signs and can produce various crystal buttons, crystal bottle caps, crystal wood combs, crystal crafts and other high-end decorations.

Resin glue properties

1. Basic characteristics: two-component glue, need to be mixed with AB, strong versatility, can fill large gaps

2. Operating environment: room temperature curing, indoor and outdoor, can be mixed manually or use AB glue special equipment (such as AB glue gun

3. Applicable temperature is generally -50 to +150 degrees

4. Suitable for general environment, waterproof, oil resistant, strong acid and alkali resistant

5. Store in a cool place away from direct sunlight. Shelf life is 12 months.

1, epoxy resin is based on epoxy resin to re-process or modify its characteristics to make its performance parameters meet specific requirements, usually epoxy resin also requires a curing agent to use, and requires It can be completely cured after being mixed evenly. Generally epoxy resin glue is called A glue or main agent, and curing agent is called B glue or curing agent (hardener).

2. The main characteristics of epoxy resin before curing are: color, viscosity, specific gravity, proportion, gel time, usable time, curing time, thixotropy (stop flow), hardness, surface tension, etc.

Viscosity: refers to the internal frictional resistance generated by colloids in the flow, and its value is determined by factors such as substance type, temperature, and concentration.

Gel time: The curing of glue is a process from liquid to solidification. The time from the start of the reaction of the glue to the critical state when the colloid becomes solid is the gel time, which is determined by the mixing amount of epoxy resin, temperature and other factors .

Thixotropy: This property refers to the phenomenon that the colloid becomes thinner with the external force when it is touched by external force (shake, stir, vibration, ultrasonic, etc.). When the external factors stop acting, the colloid returns to its original consistency.

Hardness: refers to the material's resistance to external forces such as embossing and scratches. According to different test methods, there are Shore hardness, Brinell hardness, Rockwell hardness, Mohs hardness, Barcol hardness, Vichers hardness and so on. The hardness value is related to the type of hardness tester. Among the commonly used hardness testers, the Shore hardness tester has a simple structure and is suitable for production inspection. The Shore hardness tester can be divided into A type, C type, and D type, and A type is used to measure softness. Colloids, types C and D are used to measure semi-rigid and rigid colloids.

Surface tension: The attractive force of the molecules inside the liquid causes the molecules on the surface to come in under a force. This force causes the liquid to minimize its surface area to form a force parallel to the surface. In other words, it is the mutual traction force per unit length between two adjacent parts of the liquid surface, which is a manifestation of molecular force. The unit of surface tension is N / . The amount of surface tension is related to the nature, purity and temperature of the liquid.

3. The main characteristics that reflect the characteristics of epoxy resin after curing are: resistance, voltage resistance, water absorption, compressive strength, tensile (tensile) strength, shear strength, peel strength, impact strength, thermal deformation temperature, glass Transformation temperature, internal stress, chemical resistance, elongation, shrinkage coefficient, thermal conductivity, electrical induction, weather resistance, aging resistance, etc.

Resistivity (Resistivity): Surface resistance or volume resistance is usually used to describe the resistance characteristics of materials. The surface resistance is simply the resistance value measured between two electrodes on the same surface, the unit is . The surface resistivity per unit area can be obtained by combining the electrode shape and the resistance value through calculation. Volume resistance is also called volume resistivity and volume resistivity, which refers to the resistance value through the thickness of the material. It is an important indicator of the electrical properties of dielectric or insulating materials. Represents the resistance of 1cm2 dielectric to leakage current, the unit is ? M or ? Cm. The larger the resistivity, the better the insulation performance.

Proof voltage: It is also called withstand voltage strength (insulation strength). The higher the voltage applied to the two ends of the colloid, the greater the electric field force on the charge in the material. The minimum voltage at which an insulator will break down is called the breakdown voltage of this object. When a 1 mm thick insulating material is broken down, the number of kilovolts to be added is called the insulation withstand voltage strength of the insulating material, referred to as withstand voltage, and the unit is: Kv / mm. The insulation performance of an insulating material is closely related to temperature. The higher the temperature, the worse the insulation performance of the insulating material. In order to ensure the insulation strength, each insulating material has an appropriate maximum allowable working temperature, below which it can be used safely for a long time, and it will quickly age if it exceeds this temperature.

Water absorption: A measure of how much a substance absorbs water. Refers to the mass percentage increase of a substance soaked in water at a certain temperature for a certain time.

Tensile strength: Tensile strength is the maximum tensile stress when the colloid is stretched to break. There are called breaking force, breaking strength, tensile strength and tensile strength. The unit is MPa.

Shear strength (Shear strength): Also known as shear strength, refers to the maximum load that can be supported per unit bonding area parallel to the bonding area. The commonly used unit is MPa.