Perfect combination of adhesive and automobile lightweight
With the development of "three and three technologies", the trend of "lightweight and intelligent automobile" has been mentioned for two years. The lightweight of automobile is to reduce the body weight as much as possible on the premise of ensuring the strength and safety performance of automobile, so as to achieve the purpose of energy conservation and emission reduction.
What are the benefits of lightweight for cars
Experiments show that if the vehicle weight is reduced by 10%, the fuel efficiency can be improved by 6-8%; For every 100 kg reduction in vehicle curb weight, the fuel consumption per 100 km can be reduced by 0.3-0.6 L; The vehicle weight can be reduced by 1% and the fuel consumption can be reduced by 0.7%.
How can lightweight improve safety performance?
1. The lightweight optimization design of automobile structure can reach or even exceed the strength limit required by the standard by using technologies such as variable section, changing section shape and local strengthening design.
2. Application of high strength and lightweight materials
Such as high-strength steel, advanced high-strength steel and ultra-high strength steel, aluminum magnesium alloy, engineering plastics, fiber-reinforced composites, etc.
3. Adopt advanced lightweight manufacturing technology
Such as laser tailor welding, roll forming, hot forming of high-strength steel, internal high-pressure forming and other manufacturing technologies. Structural adhesive bonding, dissimilar material riveting and other connection technologies.
Perfect combination of adhesive and automobile lightweight
Bonding body materials with adhesive can be understood as a new welding technology. We know that some metals, such as aluminum and titanium, are not easy to weld, but they can be firmly bonded with adhesive. Carbon fibers and other composites themselves are easier to bond than screws. Therefore, when using some lightweight materials such as aluminum alloy, titanium alloy and carbon fiber reinforced plastic, considering the strength weight ratio, adhesive bonding has become a more reasonable choice.
Compared with mechanical fastening connection, the stress distribution in the adhesive joint is very uniform, which can reflect the strength and rigidity of the bonded object. It has the advantages of high strength, low cost and light weight. The adhesive can adjust the difference of thermal expansion characteristics between adherends of different materials, as well as anti-corrosion, sealing and other functions.
Adhesive parts for lightweight structure bonding
Lightweight structural bonding models include: passenger cars, commercial vehicles, buses, trucks, etc.
01
Structural bonding of passenger cars
-Plastic tailgate bonding
-Door bonding
*Bonding material: PP / ABS / PC + LGF / MD / CFRP
-Hood bonding
*Bonding material: PP / ABS / PC / SMC / CFRP
-Bonding of sunroof support and luggage rack
*Bonding material: PBT / SMC / CFRP
02
Structural bonding of commercial vehicle
-Multilayer plate composite bonding
-Composite bonding of different plates
*Bonding material: FRP, PU foam, wood, etc.
03
Bus structure bonding
-Bonding of front and rear modules
-Composite bonding of roof and air conditioner
*Bonding material: SMC + Al / painted steel plate, etc.
04
Truck structure bonding
-High roof composite bonding
-Bumper bonding
-Bonding of plastic parts outside the door
*Bonding material: SMC + painted steel, ABS / PP / PE, etc.
