High-heat-resistance, low-odor and flame-retardant high-impact polystyrene (HIPS) composition and preparation method thereof

Abstract

The invention discloses a high-heat-resistance, low-odor and flame-retardant high-impact polystyrene (HIPS) composition and a preparation method thereof. The composition mainly comprises the following components by weight percent: 75-90 percent of HIPS resin, 5-15 percent of brominated flame retardant, 1-5 percent of flame-retardant synergist, 0.05-5 percent of molecular sieve and 0.05-1 percent of antioxidant, wherein the general structural formula of the molecular sieve is [M2 (I) M (II)] O. Al2O3. nSiO2. mH2O, the range of the molar ratio of silicon to aluminum is 2-50, the micropore diameter is 0.1-50nm and the particle size is larger than 1000-mesh. Compared with the prior art, the porous molecular sieve materials used by the invention are not required to be hydrophobically modified, the production process is simple and the source is wide. The prepared composite material has the characteristics of high heat resistance and low odor, the preparation process is environment-friendly and simple and the cost is low.

Description

technical field [0001] The invention relates to a modified high-impact polystyrene composition, in particular to a high-heat-resistant, low-odor, high-impact polystyrene composition and a preparation method thereof. Background technique [0002] High-impact polystyrene (HIPS) resin is widely used in internal and external components of household appliances and office automation equipment due to its good mechanical properties and processability, such as monitors, video recorders, copiers, fax machines, printers, and air conditioners , Refrigerator etc. However, HIPS resin is easy to burn. As more and more countries put forward flame retardant requirements for the above-mentioned electrical materials, brominated flame retardants, phosphorus flame retardants and inorganic flame retardants are often added to HIPS resins to prepare flame retardant HIPS resins. , the vast majority of practical applications are brominated flame retardant HIPS resin. [0003] At the same time, as t...

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Problems solved by technology

[0012] However, the molecular sieves currently used in the industry all have the following defects: either need pretreatment modification, or the molar ratio of silicon to aluminum is too small, and only part of the volatile matter with strong polarity can be adsorbed, or a single molecular sieve is used, and the range of adsorbed volatile matter is limited. And the effect is limited, and no specific molecular sieve has been found to improve the heat resistance of the material, and it has not been applied to the low-odor modification technology of high-impact polystyrene resin and flame-retardant high-impact polystyrene, which affects the Quality improvement and wide application of polymer-like materials

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