Amphiphilic compatilizer and preparation method thereof and polycarbonate-polypropylene alloy material

Abstract

The invention discloses an amphiphilic compatilizer and a preparation method thereof and a polycarbonate-polypropylene alloy material. The structural formula of the compatilizer is shown in the specification. The polycarbonate-polypropylene alloy material comprises polycarbonate, polypropylene, an amphiphilic compatilizer, an antioxidant, a lubricant and a hydrolysis-resistant agent. The amphiphilic compatilizer can improve the interface bonding force and the two-phase compatibility between the polycarbonate resin and the polypropylene resin; and meanwhile, the obtained alloy material has the advantages of excellent flame retardance, hydrolysis resistance, low water discharge rate, good processability and low cost, and can be applied to the fields of catering industry, automobile industry and the like.

Description

technical field [0001] The invention belongs to the field of thermoplastic polymer materials, and relates to a compatibilizer and a polycarbonate-polypropylene alloy material resistant to hydrolysis and highly flame-retardant. Background technique [0002] The molecular chain of bisphenol A polycarbonate (PC) is a structure in which carbonate bonds and aralkylene groups are alternately combined, and it is an amorphous and transparent thermoplastic polymer. As an engineering plastic with superior comprehensive properties, PC has the advantages of excellent impact toughness, good mechanical properties, excellent thermal stability, weather resistance, dimensional stability and creep resistance. At present, PCs are widely used in mechanical equipment, transportation, sanitary industry, catering industry, instrumentation and electrical lighting and other fields. [0003] But the disadvantage of PC is that the carbonate bond in its molecular chain has strong polarity and certain ...

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Problems solved by technology

[0003] But the disadvantage of PC is that the carbonate bond in its molecular chain has strong polarity and certain water absorption, and the saturated water absorption rate of the product itself is high (about 0.3%); the existence of a large amount of ester bonds will cause Polycarbonate is prone to hydrolysis reaction in high temperature and high humidity environment, resulting in a decline in product quality; PC has poor flame retardancy, and it is not easy to self-extinguish and drip when burning.

Polycarbonate also has shortcomings in mechanical and processing properties, such as poor processing fluidity, easy stress cracking, sensitivity to notches, and poor wear resistance. The above shortcomings limit the application of polycarbonate in many fields

[0004] As a general-purpose plastic, polypropylene (PP) has a low density (0.89-0.91g / cm 3 ), low saturated water absorption (0.1%), good comprehensive performance, and low price. The disadvantages are that polypropylene has poor toughness, low temperature brittleness, poor heat resistance, large shrinkage deformation, and poor creep resistance. , subject to certain limitations in application

However, there is no relevant report on how to improve the flame retardancy and hydrolysis resistance of the material while improving the two-phase compatibility of polycarbonate and polypropylene.

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