A kind of impact modifier with excellent weather resistance and heat resistance and its preparation method and application

An impact modifier and weather resistance technology, which is applied in the field of polymer material synthesis, can solve the problems of heat resistance and other mechanical properties reduction, low heat resistance of ASA high-grade rubber powder, and degradation of material weather resistance, so as to achieve improvement Initiation efficiency, improvement of thermal performance, effect of content reduction

CN111087547BActive Publication Date: 2022-05-20CHONGQING YUNTIANHUA HIGH END NEW MATERIALS DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-05-20

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Abstract

The invention relates to an impact modifier with excellent weather resistance and heat resistance and a preparation method and application thereof. The impact modifier is ASA high rubber powder modified by N-substituted maleimide. The N-substituted maleimide modified ASA high rubber powder of the present invention is only composed of an acrylate rubber inner core and a styrene-acrylonitrile-N-substituted maleimide terpolymer shell. The present invention introduces 2-ethylhexyl acrylate soft elastomer in the rubber core preparation process to reduce the glass transition temperature of the rubber core, and introduces N, N-dimethylaniline as a reducing agent to improve the grafting rate of the shell layer. The introduction of N-substituted maleimide comonomers in the preparation process improves the heat resistance of the material. The preparation method of the N-substituted maleimide modified ASA high rubber powder provided by the present invention can effectively improve the impact performance, coloring performance, weather resistance and heat resistance of the product.
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Description

technical field

[0001] The invention relates to the technical field of polymer material synthesis, in particular to an impact modifier with excellent weather resistance and heat resistance, a preparation method and application thereof.

[0002] technical background

[0003] ASA high rubber powder is a ternary graft copolymer composed of acrylate (A), styrene (S) and acrylonitrile (A). Due to the introduction of acrylate rubber without double bonds as the core, the rubber core is only 300nm It can be aged and degraded only under light waves, so ASA high rubber powder is a core-shell impact modifier with excellent weather resistance, and it is mainly used for blending with SAN to make ASA resin. Technically speaking, ASA resin not only maintains the main characteristics of ABS, but also combines the advantages of weather resistance of acrylic rubber, so it can be widely used in outdoor construction and other fields.

[0004] ASA resin was industrialized by German BASF company ...

Examples

Embodiment Construction

[0037] In order to make the technical means, innovative features, goals and effects achieved by the present invention easy to understand, the impact modifier with excellent weather resistance and heat resistance, its preparation method and application related to the present invention will be further described below.

[0038] The examples described here are specific specific implementations of the present invention, and are used to illustrate the concept of the present invention. They are all explanatory and exemplary, and should not be construed as limiting the implementation of the present invention and the scope of the present invention. In addition to the embodiments described here, those skilled in the art can also adopt other obvious technical solutions based on the claims of the application and the contents disclosed in the description, and these technical solutions include adopting any obvious changes made to the embodiments described here. Replacement and modified techn...