Regenerated polypropylene flame-retardant modified material and preparation method thereof

• Main Author: ZHOU QIANTAO
• Format: Patent
• Language: English
• Published: 04.03.2015
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to the technical field of recycling of polypropylene regenerated materials, and particularly relates to a regenerated polypropylene flame-retardant modified material and a preparation method thereof. The regenerated polypropylene flame-retardant modified material comprises the following substances in parts by weight: 100 parts of polypropylene recovered materials, 10-15 parts of glass fibers, 40-45 parts of flame retardants, 1-2 parts of flame-retardant synergists, 10-15 parts of anti-impact modifying agents, 1-2 parts of antioxidants, 0.1-0.5 part of coupling agents and 0.3-0.8 part of reinforcing agents, wherein the flame retardants are compound flame retardants formed by compounding magnesium hydroxide and encapsulated red phosphorus, and the flame-retardant synergists are diatomite. The regenerated polypropylene has the advantages of low toxicity, low smoke and no melting drop, and achieves the oxygen index as high as 38% and the char yield as high as 35. The regenerated polypropylene flame-retardant modified material disclosed by the invention is high in mechanical property and excellent in flame-retardant effect. The preparation method disclosed by the invention has the advantages of high polypropylene purity and few impurities of an obtained polypropylene recovered material, simple preparation process and easiness for industrialization realization.