US 12,312,471 B2
High-toughness and high-strength wood-plastic composites and preparation method thereof
Yanhong Feng, Guangdong (CN); Zixin Yuan, Guangdong (CN); Hang Sun, Guangdong (CN); Xiaochun Yin, Guangdong (CN); Jinping Qu, Guangdong (CN); and Xinliang Zou, Guangdong (CN)
Assigned to South China University of Technology, Guangzhou (CN)
Appl. No. 17/438,811
Filed by South China University of Technology, Guangdong (CN)
PCT Filed Jan. 11, 2021, PCT No. PCT/CN2021/071025
§ 371(c)(1), (2) Date Sep. 13, 2021,
PCT Pub. No. WO2021/190089, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 202010228663.4 (CN), filed on Mar. 27, 2020.
Prior Publication US 2023/0002616 A1, Jan. 5, 2023
Int. Cl. C08L 97/02 (2006.01); C08L 23/12 (2006.01)
CPC C08L 97/02 (2013.01) [C08L 23/12 (2013.01); C08L 2205/02 (2013.01); C08L 2205/035 (2013.01); C08L 2207/06 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A wood-plastic composite comprising the following preparation raw materials in parts by mass: 30-50 parts of wood flour, 11-20 parts of polyethylene, 30-52 parts of polypropylene, and 2-10 parts of an interface modifier, wherein the polyethylene has a viscosity average molecular weight of 400,000-800,000 and the wood-plastic composite is prepared by a method comprising:
mixing the preparation raw materials to obtain a mixture and
extruding the mixture using an extruder to obtain the wood-plastic composite, the extruder being an eccentric rotor extruder and having temperatures of each heating section from feeding to die heat of 130-150° C., 190-210° C., and 190-210° C., respectively.