| abstract |
The invention discloses a long glass fiber reinforced polypropylene composite material with high heat resistance and high weather resistance and a preparation method thereof, belonging to the technical field of polymer material modification. The long glass fiber reinforced polypropylene composite material with high heat resistance and high weather resistance includes the following components in parts by weight: 49-77.7 parts of PP, 0.5-5 parts of compatibilizer, and 0.2-2 parts of polar modifier parts, 20-50 parts of long glass fibers, 0.4-2.0 parts of antioxidant, 0.5-1.0 parts of light stabilizer, and 0.2-1.0% of lubricant. The present invention increases the compatibility between PP and long glass fibers by adding polar modifiers, and improves the strength and modulus of polypropylene; and by adding high-efficiency compound antioxidants, the powder can be pulverized at 150°C for more than 1500hr or more. ;By adding a compound light stabilizer that has no antagonistic effect with antioxidants, the weather resistance of xenon lamp aging over 2000hr can be achieved; at the same time, the processing cost of the material is reduced, the quality of the material is improved, and the long glass fiber reinforced polypropylene composite is widened. The range of applications of the material in the outdoors. |