Overview of Automotive Inductive Adhesive Products
DM-6982 is a molding magnetic powder connector material used for cold hot pressing universal bonding process, called universal inductor base adhesive. It is a two-component epoxy adhesive, in which component A is a brown epoxy resin solution; Component B is a curing agent that appears as a white flake solid.
Characteristics of automotive grade inductor adhesive products
| Technical system | epoxy resin |
| appearance | Brown transparent liquid (A) |
| form | Two-component mixture |
| Mixing quality ratio | 25:1 |
| Curing method | Heating solidification |
| Product Features | Excellent insulation, excellent adhesion, and a certain degree of toughness at high temperatures |
| application | Heating bonding of magnetic powder, metal, glass, aluminum, stainless steel, etc |
Physical properties of automotive grade inductor adhesive
| index | unit | numerical value | |
| appearance | Component A | / | Brown transparent liquid |
| Component B | / | White flakes | |
| density | Component A | g/ cm3 | 1.081 |
| Component B | g/ cm3 | 1.139 | |
| viscosity | Component A | mPa.s | 15 |
| Mixing ratio (mass ratio) | – | 20:1 | |
| Solid content | % | 50 | |
| Operation time | H | <10 | |
| Curing time@170 | H | 2 | |
| Tensile shear strength（SUS） | Mpa | >8.0 | |
| Glass transition temperature(DSC) | ℃ | 155-165 | |
| Cracking temperature5%Loss（TGA） | ℃ | >37 0 | |
| Reliability testing after solidification | High and low temperature storage@-55 125℃ | – | 96Hunchanged |
| High temperature and high humidity@85℃85%RH | – | 96Hunchanged | |
| Thermal Shock@-40~ 125℃ | – | 1000cycles unchanged | |
| Salt spray test@35℃ 5% | – | 96Hunchanged | |
Typical inductance aging test of automotive grade inductor adhesive shows changes in inductance
Precautions for Automotive Inductive Adhesive
- The place of use must have good ventilation. 2 Component A is a homogeneous and stable solution of volatile solvents, with flammable and explosive properties. During storage, it should be kept away from open flames and direct sunlight, and containers containing component A should not be heated.
During transportation and use, handle with care and pay attention to ventilation and air permeability. The storage temperature should be below 30 ℃ and sealed for storage. - Component B is a grayish white sheet-like solid that can be oxidized to a grayish black or even brownish black solid upon contact with air. The change in color does not affect its curing properties as a curing agent. The B component has certain hazards, and the operation requires wearing protective gloves and masks. It is strictly prohibited to directly touch the B agent with hands.
- When using the main agent and curing agent, specialized equipment should be used to mix them evenly according to the specified ratio.
- After adjusting the main agent and curing agent, they should be used up within the operable time.
When the material comes into contact with the skin, wipe it off with a cloth and rinse the affected area with water and soap.
Automotive standard inductor adhesive packaging
Packaging rules: 10 KG A/B combination
Storage conditions for automotive grade inductor adhesive
Store in a cool and dry place below 30 ℃ in the original packaging, sealed and protected from light, with a shelf life of 6 months