Reinforced polypropylene material and preparation method thereof
US12428528B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2020 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | Jul 3, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/014
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a reinforced polypropylene material, comprising in parts by weight: a, 10-90 parts of polypropylene resin, b, 0.5-25 parts of compatilizer, c, 5-60 parts of reinforced fibers and d, 0.1-20 parts of low-hardness toner. The reinforced fibers comprise a component I, a component II and a component III, where the component I is composed of reinforced fibers with a length of 0.1-0.6 mm and accounts for 35-50% of number of reinforced fibers, the component II is composed of reinforced fibers with a length of 0.7-1.3 mm and accounts for 35-45% of number of reinforced fibers, and component III is composed of reinforced fibers with a length of 1.4-2.0 mm and accounts for 5-20% of number of reinforced fibers. The present invention, by adjusting the length and the content distribution of the reinforced fibers in the reinforced polypropylene material formula, greatly preserves the maintained length of the reinforced fibers in the reinforced polypropylene material, and by combining a specific amount of low hardness toner and a specific amount of compatilizer, the low-temperature resilience and the long-term weatherability performance of the resulting reinforced polypropylene material…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.