Composite environment-friendly flame retardant for PP and PP flame-retardant plastic

Abstract

The invention discloses a composite environment-friendly flame retardant for PP and PP flame-retardant plastic, and relates to the technical field of plastic. The composite environment-friendly flame retardant for the PP is prepared from the following components in parts by weight: 15 to 25 parts of dimethyl trimethylsilylmethylphosphonate, 40 to 50 parts of pentaerythritol melamine phosphate, 15 to 35 parts of magnesium hydroxide, 35 to 55 parts of aluminum hydroxide, 9 to 11 parts of antimony trioxide and 10 to 20 parts of flame-retardant synergist. The PP flame-retardant plastic consists of the following components in parts by weight: 30-40 parts of the composite environment-friendly flame retardant for PP hereinbefore, 80-90 parts of PP resin, 10-14 parts of nitrile rubber, 3-5 parts of an initiator, 4-6 parts of a coupling agent, 0.7-1.2 parts of a composite anti-aging agent, 2-5 parts of an antioxidant, 3-6 parts of a flexibilizer and 2-5 parts of an anti-mildew antibacterial agent. The prepared composite environment-friendly flame retardant has a good flame retardant function, decomposition is avoided in high-temperature melting forming and thermal forming processing engineering, the thermal deformation temperature, the mechanical temperature, the electrical insulation property and other properties of the prepared PP flame-retardant plastic are not affected, and the plastic has long-term flame retardance.

Description

technical field [0001] The invention belongs to the technical field of plastics, in particular to a composite environment-friendly flame retardant for PP and a PP flame-retardant plastic. Background technique [0002] Fire is a symbol of human civilization. Its application in human life has promoted the progress of history, but at the same time, it can swallow a large amount of social wealth in an instant and endanger people's lives. According to statistics, there are more than 5 million fires every year in the world, nearly 100,000 people die in the sea of ​​fire, hundreds of millions of properties are destroyed, and countless people lose their relatives. [0003] Most of the materials used in daily life are thermoplastic materials. Commonly used thermoplastics include polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), polyamide (PA), Polyacrylic acid (PMA), polyethylene terephthalate (PET), etc., thermoplastic elastomers include styrene (SB...

AI Technical Summary

Problems solved by technology

[0007] (2) After the flame retardant is added, it cannot affect the mechanical strength of the plastic, especially it cannot reduce the thermal deformation temperature, mechanical temperature and electrical insulation performance of the plastic product;

Mechanisms such as: protective film mechanism, otherwise gas mechanism, cooling mechanism, and termination chain reaction mechanism are given in existing textbooks. These can provide a vague direction for the selection of flame retardants, but they cannot provide real effective information. s help