Co-catalysis compatibilization modified polystyrene alloy material and preparation method thereof

A polystyrene and compatibilizing modification technology, which is applied in the field of co-catalyzed compatibilizing modified polystyrene alloy materials and the preparation thereof, can solve the problem that the interfacial tension cannot be reduced, the compatibilizer is expensive, and the blending is unfavorable. Processing and other problems, to achieve the effect of improving processing fluidity, easy blending and processing, and low price

Inactive Publication Date: 2010-12-22
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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Problems solved by technology

However, the direct addition of pre-prepared block and graft copolymers as compatibilizers has some disadvantages: (1) Most block copolymers are in a microphase-separated state at the blending temperature and have high viscosity, It is difficult to fully disperse at the two-phase interface, so it is not conducive to blending processing; (2) The added block copolymer is likely to be dis

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  • Co-catalysis compatibilization modified polystyrene alloy material and preparation method thereof
  • Co-catalysis compatibilization modified polystyrene alloy material and preparation method thereof

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[0019] Example

[0020] The preparation steps are as follows: according to the formula ratio, add polystyrene, ethylene-octene copolymer, co-catalytic system, antioxidant, and lubricant into the mixer and stir until the materials are evenly mixed (about 5-10 minutes), and then mix The uniform material is transferred to the twin-screw extruder for melting and extrusion. The temperature of the barrel is: 150~170℃ in the feeding zone, 165~185℃ in the melting zone, 170~190℃ in the reaction zone, 160~185℃ in the die temperature. Head pressure: 3~6MPa, screw speed 60-90rpm, material is extruded and cooled and pelletized to obtain cylindrical pellet products. The specific experimental parameters corresponding to each embodiment are shown in the following table:

[0021] The formula, processing temperature and product performance of the co-catalytic compatibilization modified polystyrene alloy material of the embodiment of the present invention are shown in Table 1 below:

[0022] Table 1 T...

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Abstract

The invention discloses a co-catalysis compatibilization modified polystyrene alloy material and a preparation method thereof. The preparation method comprises the following steps of: mixing raw materials of polystyrene, an ethylene-octylene copolymer, a co-catalysis system, an antioxidant and a lubricating agent in proportion and stirring evenly for about 5-10 min by using a stirring machine; placing into a double-screw extruder for melt extrusion, wherein the temperature of a feed cylinder is 150-170 DEG C in a feeding region, 165-185 DEG C in a melting region and 170-190 DEG C in a reaction region, the die orifice temperature is 160-180 DEG C, the handpiece pressure is 3-6 Mpa, and the screw speed is 60-90 rpm; and extruding the material, cooling and granulating to prepare a product of cylindrical particles with colors from light green, dark green to dark brown according to different proportions. The alloy material has simple preparation method, low cost, excellent comprehensive performance and wide market prospect, and can be applied to some industrial occasions through wholly or partly replacing the modified polystyrene.

Description

technical field [0001] The invention relates to a processing or batching process of polymer materials, in particular to a co-catalyzed compatibilization-modified polystyrene alloy material and a preparation method thereof. Background technique [0002] Polystyrene has the advantages of transparency, good formability, high rigidity, excellent chemical properties and electrical insulation, low moisture absorption and low price. It is widely used in packaging, construction, automobiles, home appliances, daily necessities and toys. One of the four general-purpose plastics today. However, due to its inevitable shortcomings, such as poor toughness, resistance to environmental stress cracking and solvents, and relatively low heat distortion temperature (70-98°C), polystyrene has been limited in engineering applications. In order to change its shortcomings such as brittleness and low impact strength, many polystyrenes are modified to broaden their application fields. Throughout th...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L23/08C08L23/20C08K5/134C08K5/524C08K5/098B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92514B29C2948/9259B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 郭正虹方征平
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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