Glass fiber reinforced polyurethane Bus "facelift"

First replace aluminum and other metal materials

Yesterday, Chemical Engineering Research and Design Institute from dawn came news that the hospital presided over the development of passenger luggage rack and air duct with glass fiber reinforced polyurethane composite materials, new technologies , for the first time in the domestic passenger car to achieve a polyurethane material instead of the traditional aluminum and other metal materials. At present, the material has been used in a total 105,000 passenger cars, the domestic market share of similar material l00%.Sellotape

Zhao Xiuwen hospital senior engineer , told reporters , using the technology to produce polyurethane composite material with light, good mechanical properties, environmental protection, energy , fire , etc., to meet the GB24407-2012 standard and other indicators of school bus requirements .Washi tape

According赵修文introduction , adoption of new technologies , the production of polyurethane composite material density of 500 to 700 kg / cubic meter, more than 25% lower than conventional materials ; mold for 6 to 8 minutes , shorter than other materials for more than 20 % of production significantly improve efficiency ; environmental and flame indicators qualified , which oxygen index ≥ 25, ≤ 3.5 smell grade levels ( 800 ( 2 ) , the flame reached A0 -class technology products, as more bus factory test applications show that the luggage rack . and light duct weight, low cost, high production efficiency , strength, environmental protection , fire-retardant properties are to meet the application requirements, you can replace the traditional aluminum and other metal materials.

In the development process, the glass art for increasing the amount of fiber will increase resistance problems filling synthesized hydroxyl value greater functionality polyether polyol LM smaller one 435. To improve the surface hardness and the deformation stability of the products , they also synthesized corresponding anhydride polyester polyol LMPS a 201 , 435 and a mixture of LM . On this basis , passenger luggage rack for long duct length , area, requires a longer reaction mass cream time and minimize actual release time , researchers synthesized a low odor and reactive catalyst LMC delay -1 , giving the system a long cream time , and with the reactive gel catalyst complex used to make products ejection time was significantly shortened. In addition, the system also uses the new technology of the amount of trimerization catalyst effective to increase the stiffness and heat resistance of the article .Masking tape

January 2012 , the dawn of homes in the market research learned that bus manufacturer wishing duct passenger luggage rack with aluminum and other metal materials to replace polyurethane material to reduce body mass and reduce costs. The hospital was immediately researchers conducted in close coordination with the bus manufacturer research, after nearly two years of research and trial and error , and finally succeed .Wholesale masking tape