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Test Data

Surface stability of surface treatments for resin bonding

After the surface treatment for bonding, the material was stored in various environments for a predetermined period, and then resin bonding was performed to evaluate the bonding strength.

Metal：
A5052
Surface treatment：
Laser process
Resin：
Aromatic PA
Storage environment：
RT, Desiccator (25℃), 85℃, 85%RH, 50℃, 85%RH, Freezer (-18℃)
Storage time：
30days, 60days
Test Result

Regardless of the storage environment, the fracture mode after the fracture test was a resin base material fracture, and the airtightness was good.

Relationship between storage period and strength retention rate

Relationship between storage period and airtightness

Environment0day30days60days
RT〇〇〇
Desiccator〇〇〇
85℃, 85%〇〇〇
50℃, 85%〇〇〇
Freezer〇〇〇

Bonding part alumite resistance test

The alumite resistance of the bonding part was evaluated.

Metal：
A5052
Surface treatment：
Laser treatment
Resin：
Aromatic PA
Alumite：
Black alumite treatment
Test Result

Even after the alumite treatment, the fracture mode after the fracture test was a resin base material fracture, and the airtightness was good.

Strength retention rate

Airtightness

ResinInitialAfter alumite treatment
Aromatic PA〇〇

Bonding part reliability test

The heat shock resistance of the bonding part was evaluated.

Metal：
A5052
Surface treatment：
Laser process
Resin：
PA66、Aromatic PA、PPS
Test condition：
-40℃ × 30 min ⇔ 125℃ × 30 min
Test time：
3,000cycles
Test Result

Even after the heat shock test, the fracture mode after the fracture test was a resin base material fracture, and the airtightness was good.

Strength retention rate

Airtightness

Resin0cyc1000 cyc2000cyc3000cyc
PA66〇〇〇〇
Aromatic PA〇〇〇〇
PPS〇〇〇〇

High-temperature and high-humidity resistance evaluation of bonding part

Metal：
A5052
Surface treatment：
Laser process
Resin：
PA66、Aromatic PA、PPS、PP
Test condition：
-85℃ × 85%RH
Test time：
2,000 Hours
Test Result

Even after the high-temperature and high-humidity resistance test, the fracture mode after the fracture test was a resin base material fracture, and the airtightness was good.

Strength retention rate

Airtightness

Resin0Hr1000Hr2000Hr
PA66〇〇〇
Aromatic PA〇〇〇
PPS〇〇〇
PP〇〇〇

Hot water resistance evaluation of bonding part

Metal：
A5052
Surface treatment：
Laser treatment
Resin：
A66, PPS
Test condition：
Immersed in pure water at 70℃
Test time：
Up to 3,000 hours
Test Result

Even after the pure water immersion test, the fracture mode after the fracture test was a resin base material fracture, and the airtightness was good.

Strength retention rate

Airtightness

Resin0Hr1000Hr2000Hr3000Hr
PA66〇〇〇〇
PPS〇〇〇〇

LLC resistance evaluation of bonding part

Metal：
A5052
Surface treatment：
Laser process
Resin：
Aromatic PA, PP
Test condition：
The immersion test in 75℃ LLC (Long life coolant)
Test time：
2,000 Hours
Test Result

Even after the LLC immersion test, the fracture mode after the fracture test was a resin base material fracture, and the airtightness was good.

Strength retention rate

Airtightness

Resin0day1000Hr2000Hr
PA66〇〇〇
PPS〇〇〇

Salt water spray resistance evaluation of bonding part

Metal：
A5052, A6063
Surface treatment：
Laser process
Resin：
Aromatic PA
Test condition：
Combinedcyclic corrosion test of repeated salt spray (NaCl), drying, and wetting
Test time：
210days
Test Result

Even after the combined cycle test, the fracture mode after the fracture test was a resin base material fracture, and the airtightness was good.

Strength retention rate

Airtightness

Al0day210day
A5052〇〇
A6063〇〇