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Maleic anhydride melt-grafted ABS and preparation method thereof

A technology of maleic anhydride and melt grafting, which is applied in the field of low-odor ABS melt grafting maleic anhydride and its preparation, can solve the problems of large interphase interface, irritating odor, poor mechanical properties of alloy materials, etc. Fluidity and heat distortion temperature, excellent application effect, good working environment effect

Inactive Publication Date: 2011-02-09
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor compatibility between ABS and other polymers, simple two-phase blending will lead to a large interphase interface, resulting in poor mechanical properties of the alloy material. Therefore, improving the compatibility between ABS and other polymers is the key to obtaining excellent alloys. The key to overall performance
[0003] ABS grafted maleic anhydride (ABS-g-MAH) is a product developed to improve the compatibility of ABS and other polymers. The current industrialized ABS-g-MAH mainly uses dicumyl peroxide (DCP) as Initiator, maleic anhydride is the only monomer used as a monomer. The main problem is that DCP produces a very pungent smell when producing ABS-g-MAH, and the working environment is poor, which is not conducive to the work of workers.
And the only MAH monomer has a low grafting rate, which is not ideal for improving the compatibility of ABS and other polymers

Method used

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  • Maleic anhydride melt-grafted ABS and preparation method thereof
  • Maleic anhydride melt-grafted ABS and preparation method thereof

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preparation example Construction

[0032] The preparation method of ABS melt-grafted maleic anhydride of the present invention, at first weighs required raw material according to parts by weight, contains 94~98 parts of ABS, 0.5~2 parts of maleic anhydride in every hundred parts by weight of raw materials; 0.5-2 parts of ethylene; 0.2-1 part of odorless initiator; 0.2-2 parts of antioxidant.

[0033] Weigh an appropriate amount of maleic anhydride, odorless initiator, and antioxidant into styrene and stir in order, and stir for the first time;

[0034] In a preferred embodiment of the present invention, described maleic anhydride (also known as maleic anhydride) has a weight-average molecular weight of 98-99, a melting point of 52.8°C, and a relative density (water=1g / cm3) of 1.48g / cm3, analytically pure.

[0035] In a preferred embodiment of the present invention, the odorless initiator is BIBP, which is a white to pale yellow powder or solid, with a content %≥98, a melting point of 45°C-55°C, and a theoreti...

Embodiment 1

[0042] Dissolve 2% maleic anhydride, 0.2% odorless initiator, and 1.8% antioxidant into 2% styrene liquid, pre-mix for 3 minutes in a high-speed batch mixer, then add baked 94% ABS to high-speed Ingredients in a blender, then blend together for 5 minutes and set aside. Put the stirred mixture in a twin-screw machine to melt, extrude and granulate. The process conditions are: twin-screw first stage temperature 160-170°C, second-stage temperature 170-180°C, third-stage temperature 180-190°C, main screw speed 100-300 rev / min, feeding screw speed 20-45 rev / min.

Embodiment 2

[0044] Dissolve 1% maleic anhydride, 1% odorless initiator, and 1% antioxidant into 1% styrene liquid, pre-mix for 3 minutes in a high-speed batch mixer, then add baked 96% ABS to high-speed Ingredients in a blender, then blend together for 5 minutes and set aside. Put the stirred mixture in a twin-screw machine to melt, extrude and granulate. The process conditions are: twin-screw first stage temperature 160-170°C, second-stage temperature 170-180°C, third-stage temperature 180-190°C, main screw speed 100-300 rev / min, feeding screw speed 20-45 rev / min.

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Abstract

The invention relates to maleic anhydride melt-grafted ABS and a preparation method thereof. The maleic anhydride melt-grafted ABS comprises the following components by weight percent: 94-98% of ABS, 0.5-2% of maleic anhydride, 0.5-2% of styrene, 0.2-1% of odorless initiator and 0.2-2% of antioxidant. The maleic anhydride melt-grafted ABS has high grafting efficiency and low odor and can be used as the compatilizer of PC / ABS; and performance tests prove that when the compatilizer is used in PC / ABS alloy, the compatibility of alloy is good and the performance is excellent.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a low-odor ABS melt-grafted maleic anhydride and a preparation method thereof. Background technique [0002] ABS (acrylonitrile / butadiene / styrene) has excellent physical and mechanical properties, high surface strength, stable size, good chemical resistance and electrical properties, easy to form and process, can be pasted, electroplated, etc., and the price is low. It is an engineering plastic widely used in home appliances, instruments, etc. It is also commonly used to make alloys by blending other polymers, such as ABS / polycarbonate (PC) alloy, ABS / polyamide 6 alloy, etc. Due to the poor compatibility between ABS and other polymers, simple two-phase blending will lead to a large interphase interface, resulting in poor mechanical properties of the alloy material. Therefore, improving the compatibility between ABS and other polymers is the key to obtaining excellent al...

Claims

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Application Information

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IPC IPC(8): C08K5/526C08K5/134C08F279/04
Inventor 徐东徐永何杰
Owner SHENZHEN KEJU NEW MATERIAL
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