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Styrene/maleic anhydride compound and preparation method thereof

A technology of maleic anhydride and styrene, applied in the field of polymers, can solve the problems of low pollution, high energy consumption, large solvent consumption, etc. Effect

Active Publication Date: 2013-03-27
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main application scope of SMA resin is automobile manufacturing, household appliances, building materials, office facilities, tool manufacturing, etc. At present, the random copolymerization reaction of industrialized maleic anhydride and styrene is mainly initiated by free radical initiators. Polymerization is carried out in a polar solution, but the solution method needs to consume a large amount of solvent, resulting in high energy consumption and environmental pollution, which does not meet the requirements of low pollution and low energy consumption in today's industrial development

Method used

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  • Styrene/maleic anhydride compound and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Dissolve 5 kg of maleic anhydride monomer, 0.1 kg of polarity regulator tetrahydrofuran (THF), and 0.1 kg of free radical initiator AIBN into 94.8 kg of styrene monomer, and inject through a high-pressure plunger metering pump with an aspect ratio of 64: 1. The whole process sealed reaction twin-screw extruder, the temperature of each section of the extruder barrel is: the temperature of the material section is 150°C, the temperature of the reaction section is 200°C, the temperature of the homogenization section is 200°C, and the temperature of the conveying section is 200°C.

[0051] The rotational speed of the screw is 100 rpm.

[0052] Under the high temperature inside the extruder and the shear dispersion of screw elements, random copolymerization of styrene and maleic anhydride occurs under the action of free radical initiators and polarity regulators, and the reaction completely forms SMA random copolymers , between the outlet of the homogenization section and the...

Embodiment 2

[0054] Dissolve 15 kg of maleic anhydride monomer, 0.5 kg of polar regulator tetramethylethylenediamine (TMEDA), and 0.5 kg of free radical initiator BPO into 84 kg of styrene monomer, and inject it into the long-term through a high-pressure plunger metering pump. The whole process sealed reaction twin-screw extruder with a diameter ratio of 64:1, the temperature of each section of the extruder barrel is: the temperature of the material section is 150°C, the temperature of the reaction section is 200°C, the temperature of the homogenization section is 200°C, and the temperature of the conveying section is 150°C. The section temperature is 200°C.

[0055] The rotational speed of the screw is 100 rpm.

[0056]Under the high temperature inside the extruder and the shear dispersion of screw elements, random copolymerization of styrene and maleic anhydride occurs under the action of free radical initiators and polarity regulators, and the reaction completely forms SMA random copoly...

Embodiment 3

[0058] Dissolve 25 kg of maleic anhydride monomer, 1 kg of polar regulator diethylene glycol dimethyl ether, and 1 kg of free radical initiator DCP into 73 kg of styrene monomer, and inject the aspect ratio through a high-pressure plunger metering pump. It is a 64:1 fully sealed reaction twin-screw extruder. The temperature of each section of the extruder barrel is: the temperature of the material section is 150°C, the temperature of the reaction section is 200°C, the temperature of the homogenization section is 200°C, and the temperature of the conveying section 200°C.

[0059] The rotational speed of the screw is 100 rpm.

[0060] Under the high temperature inside the extruder and the shear dispersion of screw elements, random copolymerization of styrene and maleic anhydride occurs under the action of free radical initiators and polarity regulators, and the reaction completely forms SMA random copolymers , between the outlet of the homogenization section and the inlet of th...

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Abstract

The invention discloses a styrene / maleic anhydride compound and a preparation method thereof. The preparation method of the styrene / maleic anhydride compound comprises the following steps: dissolving maleic anhydride, a polarity regulator accounting for 0.1-1 percent of the total weight of the styrene / maleic anhydride compound and a radical initiator to a styrene monomer, and controlling a screw barrel of a double-screw extruder to 30-280 DEG C to carry out extrusion and granulation in the reactive-type double-screw extruder to obtain the styrene / maleic anhydride compound. The preparation method is implemented by adopting a reactive extrusion bulk method without using a large number of solvents, therefore the problems of overhigh energy consumption and heavy environmental pollution caused by the adoption of a large number of solvents in a solution method are solved, and the copolymerization reaction can be controlled due to the addition of the polarity regulator so as to promote to generate random copolymers by the reaction; and the styrene / maleic anhydride compound produced by synthesis is high in rigidity, heat resistance and toughness and accords with the requirements of SMA (Styrene Maleic Anhydride) materials for vehicles.

Description

technical field [0001] The invention relates to the field of macromolecules, in particular to a styrene / maleic anhydride compound and a preparation method thereof. Background technique [0002] Pure polystyrene material is brittle and has poor heat resistance, which limits its application range. A new type of thermoplastic engineering plastic styrene maleic anhydride random copolymer (SMA) resin can be prepared by random copolymerization of maleic anhydride and styrene monomer, which can improve the heat resistance of polystyrene resin. SMA resin has been successfully developed by Arco Company of the United States and has been introduced to the market under the trade name of Dylark. At present, there are many new brands of SMA resin abroad, such as Cypress and Styromol. [0003] The main application scope of SMA resin is automobile manufacturing, household appliances, building materials, office facilities, tool manufacturing, etc. At present, the random copolymerization rea...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F222/08C08F2/02
Inventor 陶四平陈国雄李欣张春怀孙刚丁超罗忠富周英辉
Owner TIANJIN KINGFA NEW MATERIAL
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