Preparation method of POE (polyolefin elastomer) chemically-grafted maleic anhydride

A technology of polyolefin elastomer and maleic anhydride, which is applied in the field of preparation of polyolefin elastomer chemically grafted maleic anhydride, can solve problems such as incompatibility, prevent gel and yellowing, reduce odor and yellowing , the effect of low gel content

Inactive Publication Date: 2013-12-18
NINGBO EAGLE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, polyolefin elastomer (POE) is a non-phase elastomer, which is dif

Method used

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  • Preparation method of POE (polyolefin elastomer) chemically-grafted maleic anhydride

Examples

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Example Embodiment

[0016] Example 1

[0017] A method for grafting maleic anhydride with polyolefin elastomer, dissolving maleic anhydride, initiator, heat stabilizer and polyolefin elastomer with acetone, and then putting the mixture into a single-screw extruder to melt, blend, and extrude granulation , The grafted POE-g-MAH of polyolefin elastomer and maleic acid was prepared; when pelletizing, the screw length-diameter ratio of the single-screw extruder was 30:1, and the shearing thread length was 35cm. The speed of the machine is 45HZ, the temperature of the extruder is 80-250℃, and the vacuum pressure is controlled at 0.08MPa.

[0018] In the implementation of this scheme, the initiator is dicumyl peroxide, the heat stabilizer is 3.5-di-tert-butyl-4-hydroxyphenylpropionic acid stearyl carbonate, and the grafting monomer is maleic anhydride; In points: 97.4 parts of polyolefin elastomer, 0.9 parts of maleic anhydride, 0.3 parts of initiator, 1 part of acetone, and 0.4 parts of heat stabilizer.

Example Embodiment

[0019] Example 2

[0020] A method for grafting maleic anhydride with polyolefin elastomer, dissolving maleic anhydride, initiator, heat stabilizer and polyolefin elastomer with acetone, and then putting the mixture into a single-screw extruder to melt, blend, and extrude granulation , The grafted POE-g-MAH of polyolefin elastomer and maleic acid was prepared; when granulating, the screw length-diameter ratio of the single-screw extruder was 35:1, the shear thread length was 35cm, and the extrusion The speed of the machine is 45HZ, the temperature of the extruder is 80-250℃, and the vacuum pressure is controlled at 0.08MPa.

[0021] In the implementation of this scheme, the initiator is dicumyl peroxide, the heat stabilizer is 3.5-di-tert-butyl-4-hydroxyphenylpropionic acid stearyl carbonate, and the grafting monomer is maleic anhydride; In points: 97.4 parts of polyolefin elastomer, 0.9 parts of maleic anhydride, 0.3 parts of initiator, 1 part of acetone, and 0.4 parts of heat st...

Example Embodiment

[0022] Example 3

[0023] A method for grafting maleic anhydride with polyolefin elastomer, dissolving maleic anhydride, initiator, heat stabilizer and polyolefin elastomer with acetone, and then putting the mixture into a single-screw extruder to melt, blend, and extrude granulation , The grafted POE-g-MAH of polyolefin elastomer and maleic acid was prepared; when granulating, the screw length-diameter ratio of the single-screw extruder was 40:1, the shear thread length was 35cm, and the extrusion The speed of the machine is 45HZ, and the temperature of the extruder is 80-250℃, and the vacuum pressure is controlled at 0.08MPa.

[0024] In the implementation of this scheme, the initiator is dicumyl peroxide, the heat stabilizer is 3.5-di-tert-butyl-4-hydroxyphenylpropionic acid stearyl carbonate, and the grafting monomer is maleic anhydride; In points: 97.4 parts of polyolefin elastomer, 0.9 parts of maleic anhydride, 0.3 parts of initiator, 1 part of acetone, and 0.4 parts of hea...

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Abstract

The invention discloses a preparation method of POE (polyolefin elastomer) chemically-grafted maleic anhydride. The preparation method of the POE chemically-grafted maleic anhydride comprises the following steps: S1. compounding POE, maleic anhydride, peroxide initiators as well as heat stabilizers, adding an acetone solvent, and mixing evenly; S2, evenly stirring the materials in a high-speed stirrer so as to enable each component to be dispersed evenly and enable the solvent to be volatilized sufficiently, feeding the materials, setting the extrusion temperature of a single-screw extruder as 80-250 DEG C and the main engine frequency of the single-screw extruder as 25-50Hz, controlling the vacuum pressure of the single-screw extruder to be 0.06-0.1MPa, carrying out chemical grafting reaction for 2-4 minutes, staying, cooling, dicing grains, stirring and packaging. The preparation method of the POE chemically-grafted maleic anhydride, which is provided by the invention, can be used for solving defects in production of the POE chemically-grafted maleic anhydride and problems of a POE chemically-grafted maleic anhydride product in the prior art, and greatly improving the compatibility of POE and polar polymers.

Description

technical field [0001] The invention relates to the technical field of maleic anhydride preparation, in particular to a method for preparing polyolefin elastomer chemically grafted maleic anhydride. Background technique [0002] Polyolefin elastomer (POE) is a thermoplastic elastomer with relative molecular weight distribution and uniform short-chain branch distribution with metallocene as catalyst, and its molecular structure is similar to EPDM rubber. Therefore, it has excellent properties such as aging resistance, ozone resistance, and chemical medium resistance. Compared with EPDM, polyolefin elastomer (POE) is granular, which can save the complicated granulation and premixing process of block EPDM, while Polyolefins can be modified for high-speed extrusion molding. However, polyolefin elastomer (POE) is a non-phase elastomer, and it is difficult to be compatible with polar polymers (such as: PA6, PA66, PC). Therefore, it is particularly important to chemically graft a...

Claims

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Application Information

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IPC IPC(8): C08F255/00C08F255/02C08F222/06B29B9/06B29C47/92B29C48/92
CPCB29C48/911B29C48/04B29C48/92B29C2948/92514B29C2948/92895
Inventor 陆建华蒋东升
Owner NINGBO EAGLE NEW MATERIAL
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