There are many customers who have bubble phenomenon when using three proofing paint. The reason for this phenomenon is that the circuit board is not cleaned or dried, and there are dust, humidity and other reasons on the circuit board...

As we all know, three proofing paint has the functions of moisture-proof, salt fog proof and mould proof, so how to test its protective effect? The following is an introduction from three aspects....

Good adhesive assembly and automatic assembly process are the requirements of home appliance industry assembly. The use of PUR hot-melt adhesive effectively overcomes the defects of 3M tape,...

Many factors need to be considered in the selection of adhesive to achieve the ideal bonding effect. Choosing the right adhesive can prolong the product life, keep the efficiency and reduce the cost...

UL94 is the most widely used standard for flammability of materials. It is used to evaluate the ability of materials to extinguish after being ignited. It is a popular standard for daily inspection of whether materials are flame retardant or not...

When the designed electronic products can no longer be equipped with fans and metal heat dissipation in space and position, the thermal conductive silica gel sheet can be used to directly contact IC and shell, and directly transfer the heat source to the ex...

Potting glue is a widely used term. For bonding, sealing, potting and coating protection of electronic components. The potting adhesive is liquid and has fluidity before curing...

Definition of viscosity: viscosity is a measure of fluid viscosity and a representation of fluid flow force on its internal friction phenomenon. The higher the viscosity, the higher the internal friction and the molecular weight....

Modified silane is a kind of product after polyurethane structure is introduced into silicone structure. It has the aging resistance of silicone, as well as excellent adhesion and strength of polyurethane...

Thixotropy definition: at a constant shear rate, the viscosity decreases with the increase of time, and after the shear stops, the phenomenon of viscosity recovery is called thixotropy...

Definition of hardness: refers to the material‘s resistance to external force, that is, the resistance of the material to the rigid object when it is pressed in. Its size reflects the hardness and softness of the material itself...

Definition of dielectric strength: it is defined as the limit voltage per unit thickness when the dielectric is broken down by the current. It is a measure of the electrical strength when the material is used as an insulator, expressed as volt per unit thick...

Definition of thermal conductivity: take two parallel planes with a distance of 1 meter and an area of 1 square meter perpendicular to the direction of thermal conductivity inside the object. If the temperature difference between the two planes is 1K, the h...

Definition of volume resistivity: refers to the ratio of DC voltage drop per unit thickness to current per unit area.

Salt spray test is a kind of environmental test that mainly uses the artificial simulated salt spray environmental conditions created by salt spray test equipment to assess the corrosion resistance of products or metal materials. It is divided into two categ...

The protection level adopts the IP ×× level standard recommended by the International Electrotechnical Commission (IEC), and the level is different in different installation sites. For details, please refer to the following instructions...

UV aging test is to use fluorescent UV lamp as the light source, through simulating the UV radiation and condensation in natural sunlight, to accelerate the weather resistance test of materials, so as to obtain the results of weather resistance of materi...

Polyvinyl chloride (PVC) is an initiator of vinyl chloride monomer (VCM) in peroxides, azo compounds, etc

The heat conducting gasket is to fill the air gap between the heating device and the heat sink or the metal base. Its flexible and elastic characteristics enable it to cover the very uneven surface. The heat is transmitted from the separating device or the ...

Problems to be considered when selecting epoxy resin potting adhesive: requirements for potting adhesive performance of the product, such as use temperature, cold and hot alternation, internal stress of components, outdoor use or indoor use, stress condition,...