A kind of halogen-free flame-retardant PBT/PP-based wood-plastic composite material and preparation method thereof

Abstract

The present invention involves the technology field of wood plastic composite materials, which specifically involves a kind of halogen -free PBT / PP base wood plastic composite material and its preparation method.20 to 30 parts of diol ester, 10‑20 part of polypropylene, 28‑35 copies of melamine formaldehyde resin modified plant fiber, 23 copies of ammonium -type polyphosphate, 1‑3 parts of 4A molecular sieve, Malaysic acid anhydrialsPolymide 4‑8 copies, 2‑3 parts of lubricants, 0.2‑0.5 copies of antioxidants and 0.2‑0.5 parts of light stabilizer.The wooden plastic composite material of the present invention has high mechanical strength. The 1.6mm thick -sample strips vertical combustion pass through UL‑94V‑ 0, the stretching strength reaches 36.3MPa, the curved strength reaches 48.8MPa, and the thermal deformation temperature is 144.8 ° C.As high as 120 ° C.

Description

technical field

[0001] The invention relates to the technical field of wood-plastic composite materials, in particular to a halogen-free flame-retardant PBT / PP-based wood-plastic composite material and a preparation method thereof. Background technique

[0002] Plant fibers such as wood powder and bamboo powder have the advantages of high specific strength, large specific surface area, low density, less wear and tear on equipment, and are renewable and biodegradable. After proper treatment, they can be compounded with thermoplastics to obtain high performance and high Value-added green and environmentally friendly wood-plastic composite materials. Wood powder, bamboo powder and other plant fibers have a relatively low thermal decomposition temperature, and generally start to decompose at 150-200 ° C. At present, most of them use thermoplastic general-purpose plastics with low processing temperatures such as polyethylene, polypropylene (PP), polyvinyl chloride, etc. However,...