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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

AI Technical Summary

Problems solved by technology

However, polyolefin elastomer (POE) is a non-phase elastomer, which is difficult to be compatible with polar polymers (such as: PA6, PA66, PC), etc.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for grafting maleic anhydride to a polyolefin elastomer, using acetone to dissolve maleic anhydride, an initiator, a heat stabilizer and a polyolefin elastomer and mix evenly, then put the mixture into a single-screw extruder for melt blending, extrusion and granulation , to obtain the grafted POE-g-MAH of polyolefin elastomer and maleic acid; when granulating, the screw length-to-diameter ratio of the single-screw extruder is 30:1, and the shear thread length is 35cm. The machine speed is 45HZ, the extruder temperature is 80-250°C, 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 octadecanoate, and the graft monomer is maleic anhydride; In terms of fractions: 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.

Embodiment 2

[0020] A method for grafting maleic anhydride to a polyolefin elastomer, using acetone to dissolve maleic anhydride, an initiator, a heat stabilizer and a polyolefin elastomer and mix evenly, then put the mixture into a single-screw extruder for melt blending, extrusion and granulation , to obtain the graft POE-g-MAH of polyolefin elastomer and maleic acid; when granulating, the screw length-to-diameter ratio of the single-screw extruder is 35:1, and the shear thread length is 35cm. The machine speed is 45HZ, the extruder temperature is 80-250°C, 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 octadecanoate, and the graft monomer is maleic anhydride; In terms of fractions: 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.

Embodiment 3

[0023] A method for grafting maleic anhydride to a polyolefin elastomer, using acetone to dissolve maleic anhydride, an initiator, a heat stabilizer and a polyolefin elastomer and mix evenly, then put the mixture into a single-screw extruder for melt blending, extrusion and granulation , to obtain the graft POE-g-MAH of polyolefin elastomer and maleic acid; when granulating, the screw length-to-diameter ratio of the single-screw extruder is 40:1, and the shear thread length is 35cm. The machine speed is 45HZ, the temperature of the extruder is 80-250°C 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 octadecanoate, and the graft monomer is maleic anhydride; In terms of fractions: 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.

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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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