What are the five lightweight materials in the automotive sector?

"Lightweight" and "vehicle environment" is the focus of the two car field, and accelerate the development of lightweight car, lightweight and high performance alternative materials and new forming technology has become the mainstream of the development of automobile. At present, the most common lightweight materials in the automotive field have the following five kinds:

One, Long fiber reinforced material

The resin matrix mainly includes PP, PA6, PA66, PBT and so on. The fiber content is 5%, 10%, 15%, 20%, 30%, 40% and so on. In addition, there are MD mineral composite filling class, mainly used in the front of the car template, fender, tray, stent and other places, to maintain the stability of product forming and structural strength, plastic instead of steel for car weight reduction.

Two, Low density PP materials

Low density PP based lightweight automobile demand is developed, with low density (0.95g/cm3), high modulus and high impact strength of PP material, the shrinkage rate is comparable to that of PP+EPDM-T20 can replace the PP+EPDM-T20 material in the bumper, dashboard, door panels and other components (density 1.05g/cm3), with significant weight loss, at the same time the scratch resistance, and color performance is better.

Three, low VOC green environmental protection material

Studies have shown that volatile organic compounds (volatileorganic compounds), which come from interior parts, are one of the main reasons that affect the air quality in VOC. Most of the volatile organic compounds in the interior parts contain a certain amount, they are mainly alkanes, alkenes, aromatic hydrocarbons, aldehydes or ketones, boiling point of these substances usually in the range of 50 to 260 DEG C.

When the temperature reaches a certain height, the release of volatile substances will, some will form fog and condensation in the front windshield, the driver's line of sight and influence; others have an unpleasant smell, and even cause headache, dry cough and allergic and other symptoms, and physical harm to the crew. Because of its serious impact on the environment and the human body, it has received wide attention.

Low VOC material additives by using high purity, heat stable oxygen, using appropriate techniques to reduce the degradation of polymer and additives, additives, the use of vacuum adsorption techniques to achieve low VOC, is particularly important for the improvement of the car indoor environment is.

Four, spray free material

Including high light, matte, metallic luster and all kinds of special customized color material, through a special color formulation technology and material modification technology, so that the material has good appearance effect and has high fluidity, high scratch resistance ability.

Spray free material rich in color, the appearance of the effect can be made of metal and crystal texture, a molding, a product cycle is short, beautiful colors can help customers cope with diverse, differentiated market demand. The important thing is that the spraying material 100% can be recycled, and the price is lower than that of the general plastic. Non spraying materials not only meet the environmental protection laws and regulations, protect the health of workers, but also reduce the cost, eliminate the spraying process, and save more trouble.

Five, halogen free flame retardant material

By controlling the flame retardant package processing technology, transesterification technology and other methods, to solve the amount of halogen-free flame retardant and improve the contradiction of non halogen flame retardant flame retardant efficiency, through a variety of non halogen flame retardant compound to obtain non halogen flame retardant PBT composite flame retardant, Gao Guang surface, can replace the traditional flame retardant PBT composites.

At present, high light surface environmental protection halogen-free flame retardant PBT composite materials are widely used in the electronics industry: CPU fan box fan, various kinds of terminals, connectors, USB connectors, capacitor shell and so on, stable quality.