Alpha-methylstyrene/styrene/N-phenylmaleimide/maleic anhydride tetrapolymer and preparation method thereof

A technology of methyl styrene and maleimide, applied in the field of new acrylonitrile-butadiene-styrene heat-resistant modifier and its preparation, which can solve the problems of poor weather resistance, restricted application, low thermal stability, etc. question

Inactive Publication Date: 2014-01-15
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of industry, due to low thermal stability and poor weather resistance, the application of acrylonitrile-butadiene-styrene resin is seriously restricted. Therefore, it is very necessary to improve its heat resistance to meet market needs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 10g NPMI, 20g α-MS, 10g St, 2g MAH and 200mL toluene solvent into a 500mL four-necked flask, blow out the air with nitrogen, then heat to 75°C in a water bath, and stir until the solid dissolves to form a homogeneous phase solution. Then add the initiator di-tert-butyl peroxide terephthalate, control the temperature below 90°C, and keep the pressure constant for 4 hours. The suspension in the flask was dissolved in acetone, and then reprecipitated with methanol as a precipitant. After drying, a yellow solid was obtained, and a light yellow powder was obtained after suction filtration.

[0022] The glass transition temperature of the product is 248°C, and the yield reaches 78%.

Embodiment 2

[0024] Add 15g NPMI, 12g α-MS, 12 g St, 1g MAH and 168mL xylene solvent into a 500mL four-necked flask, blow out the air with nitrogen, then heat to 75°C in a water bath, and stir until the solid dissolves to form homogeneous solution. Then add the initiator azobisisobutyronitrile, control the temperature below 90°C, and keep the pressure constant for 4 hours. The suspension in the flask was dissolved in acetone, and then reprecipitated with methanol as a precipitant. After drying, a yellow solid was obtained, and a light yellow powder was obtained after suction filtration.

[0025] The glass transition temperature of the product is 245°C, and the yield reaches 84%.

Embodiment 3

[0027] Add 14g NPMI, 10g α-MS, 10 g St, 1.5g MAH and 210mL cyclohexanone solvent into a 500mL four-necked flask, blow out the air with nitrogen, then heat to 75°C in a water bath, and stir until the solid dissolves , forming a homogeneous solution. Then add the initiator azobisisoheptanonitrile, control the temperature below 90°C, and keep the pressure constant for 4 hours. The suspension in the flask was dissolved in acetone, and then reprecipitated with methanol as a precipitant. After drying, a yellow solid was obtained, and a light yellow powder was obtained after suction filtration.

[0028] The glass transition temperature of the product is 245°C, and the yield reaches 82%.

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Abstract

The invention belongs to the technical field of polymer heat-resistant modifiers and relates to an alpha-methylstyrene / styrene / N-phenylmaleimide / maleic anhydride tetrapolymer synthesized by one-step method and a preparation method thereof. The invention adopts a solution polymerization one-step feeding method to prepare the alpha-methylstyrene / styrene / N-phenylmaleimide / maleic anhydride tetrapolymer, and the chemical structure of the heat-resistant agent involved is a tetrapolymer of alpha-methylstyrene, styrene, N-phenylmaleimide and maleic anhydride. In the tetrapolymer, the mass fraction of N-phenylmaleimide is 10-60%, the mass fraction of styrene is 20-80%, the mass fraction of alpha-methylstyrene is 10-50%, and the mass fraction of maleic anhydride is 1-10%. The product shows a single glass transition temperature, which is higher than that of the common N-phenylmaleimide copolymers, and the product yield is relatively high. The tetrapolymer is mainly applied to ABS and other resins. The preparation method provided by the invention has such characteristics as high simplicity in preparation, short reaction time, low equipment investment and high economic return.

Description

technical field [0001] The invention relates to a novel acrylonitrile-butadiene-styrene heat-resistant modifier and a preparation method thereof, more specifically to an α-methylstyrene / styrene / N-phenylmaleimide / The invention discloses a maleic anhydride tetrapolymer and a preparation method thereof, belonging to the technical field of polymer heat-resistant modifiers. Background technique [0002] Acrylonitrile-butadiene-styrene (ABS) resin is a kind of thermoplastic engineering plastic with excellent comprehensive properties, which is widely used in machinery industry, automobile industry, electronic and electrical industry, instrumentation industry, textile industry and construction industry. However, with the development of industry, due to low thermal stability and poor weather resistance, the application of acrylonitrile-butadiene-styrene resin is severely restricted, so it is very necessary to improve its heat resistance to meet market needs. [0003] The most commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F234/00C08F212/12C08F222/06C08L25/08
Inventor 李远唐颂超朱瑾李昀蒋贵阳王钰涛雷凯卜扬帆何帅黄文娴孟利良
Owner EAST CHINA UNIV OF SCI & TECH
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