High-hydrophobicity low-odor flame-retardant polypropylene composite material and preparation method thereof

Abstract

The invention belongs to the field of composite materials, and particularly relates to a high-hydrophobicity low-odor flame-retardant polypropylene composite material and a preparation method thereof.The high-hydrophobicity low-odor flame-retardant polypropylene composite material is prepared from polypropylene, fluorine-containing organic silicon, a modifier, a flame retardant and optionally barium sulfate, a flexibilizer, a lubricant, an antioxidant and an antibacterial agent, wherein the fluorine-containing organic silicon is ultra-high-molecular-weight fluorine-containing polysiloxane with the number-average molecular weight larger than one million, the modifier is composed of an adsorbent and a chelating agent, the adsorbent is organophilic inorganic powder of a porous structure, thechelating agent is zinc ricinoleate and / or a hyperbranched polyether modified chelating agent, and the weight ratio of the polypropylene to the fluorine-containing organic silicon to the flame retardant to the modifier is (20-150):(0.5-10):(5-50):1. The polypropylene material has the advantages of being high in hydrophobicity, low in odor, excellent in flame retardancy and wide in application prospect.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a highly hydrophobic and low-odor flame-retardant polypropylene composite material and a preparation method thereof. Background technique [0002] As one of the most widely used general-purpose plastics, polypropylene (PP) is widely used in food packaging and home appliance industries due to its non-toxic, environmentally friendly, low density, hydrolysis resistance, good heat resistance and chemical stability. , For example, the shells of household appliances, toilet washers, dishwasher liners, etc. are all made of polypropylene. [0003] Since polypropylene is a material between hydrophilic and hydrophobic, the θC contact angle is about 90°. When used in a high-temperature and high-humidity environment, a large amount of water vapor and stains will condense on the surface of the part, making it difficult to clean. On the one hand On the other hand, these water st...

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Problems solved by technology

For example, CN105860120A utilizes isotactic polypropylene-b-polyethylene glycol diblocks as a surface modifier to construct a micro-nano composite structure on the surface of polypropylene film, so that the material obtains superhydrophobic properties; however, this method is aimed at The most popular is polypropylene film material, and at the same time, the technology is difficult and the cost is high, so it is difficult to meet the requirements of industrial production

CN107163389A adds fluorine-containing additives and silicone masterbatches to polypropylene to make the material obtain higher hydrophobicity. Although the material thus obtained has higher hydrophobicity, it does not take into account its odor, barrier properties, etc. Flammability and other requirements, thus limiting its application in the industry

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