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A kind of crosslinking agent and its preparation method and application

A technology of cross-linking agent and maleic anhydride, applied in the field of polymers, can solve problems such as easy volatility, and achieve the effects of improving stability, good compatibility and promoting cross-linking

Active Publication Date: 2019-01-15
GUANGDONG TIANAN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used small molecule crosslinking accelerators are volatile and have low toxicity

Method used

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  • A kind of crosslinking agent and its preparation method and application
  • A kind of crosslinking agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 100g of POE-g-MAH and add it to the internal mixer, set the temperature at 170°C, and the rotation speed at 50rpm. After it is completely melted, first add 0.5g of TBA, then add 1g of GMA, and discharge after 5 minutes of reaction , cooling, and crushing to obtain terminal alkenyl-modified POE.

[0029] Mix polypropylene and terminal alkenyl-modified POE uniformly in a high-speed mixer at a ratio of 100:10, add them to a twin-screw extruder, and blend and extrude at 170-190°C. Granulator, to obtain blended particles with a length of 3-5 mm, dry the blended particles until the moisture content is less than 0.02%, and then add them to the casting machine to prepare a cast film with a thickness of 0.5 mm, and then cast the film Place it in an electron accelerator, under the protection of nitrogen, and irradiate with 20kGy to obtain a polypropylene coating material.

Embodiment 2

[0031] Weigh 100g of PP-g-MAH and add it to the internal mixer, set the temperature at 170°C, and the speed at 50rpm. After it is completely melted, first add 0.5g of TBA, then add 1g of GMA, and discharge after 8 minutes of reaction , cooling, and crushing to obtain terminal alkenyl-modified PP.

[0032] Mix polypropylene and terminal alkenyl-modified PP uniformly in a high-speed mixer at a ratio of 100:10, add them to a twin-screw extruder, and extrude them at 170-190°C. Granulator, to obtain blended particles with a length of 3-5 mm, dry the blended particles until the moisture content is less than 0.02%, and then add them to the casting machine to prepare a cast film with a thickness of 0.5 mm, and then cast the film Place it in an electron accelerator, under the protection of nitrogen, and irradiate with 20kGy to obtain a polypropylene coating material.

Embodiment 3

[0034] Weigh 100g of POE-g-MAH and add it to the internal mixer, set the temperature at 170°C, and the rotation speed at 50rpm. After it is completely melted, first add 0.5g of TBA, then add 2g of GMA, and discharge after 8 minutes of reaction , cooling, and crushing to obtain terminal alkenyl-modified POE.

[0035] Mix polypropylene and terminal alkenyl-modified POE in a high-speed mixer at a ratio of 100:15, add them to a twin-screw extruder, and extrude them at 170-190°C. Granulator, to obtain blended particles with a length of 3-5 mm, dry the blended particles until the moisture content is less than 0.02%, and then add them to the casting machine to prepare a cast film with a thickness of 0.5 mm, and then cast the film Place it in an electron accelerator, under the protection of nitrogen, and irradiate with 40kGy to obtain a polypropylene coating material.

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Abstract

The invention discloses a cross-linking agent, which is obtained by reacting maleic anhydride-grafted polyolefin and glycidyl methacrylate; wherein, the grafting ratio of the maleic anhydride-grafted polyolefin higher than 5%. The invention also discloses the preparation method and application of the crosslinking agent. The crosslinking agent of the invention is a polyolefin with terminal alkenyl groups, has good compatibility with the polypropylene matrix, and can effectively promote the crosslinking of the polypropylene under irradiation conditions. The polypropylene coating material prepared by using the crosslinking agent of the present invention has high stability and no peculiar smell during later use.

Description

technical field [0001] The invention relates to the technical field of macromolecules, in particular to a crosslinking agent, a preparation method thereof, and an application of the crosslinking agent. Background technique [0002] Polypropylene (PP), as a degradable polymer material, has excellent mechanical properties, electrical properties, and chemical resistance, and is currently one of the fastest growing and highest yielding polymer materials. In recent years, in the automobile and home improvement industries, polypropylene film has gradually replaced soft PVC and entered the middle and high-end fields. The reason is that polypropylene film materials do not need to add plasticizers during the molding process, which greatly simplifies the processing technology In the later use process, it will not cause toxicity due to the slow precipitation of plasticizers. [0003] However, the traditional polypropylene coating material often suffers from insufficient heat resistanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/14C08F8/00C08F255/02C08F287/00C08L23/12C08L51/06C08L51/00C08J3/28C08J3/24
CPCC08F8/00C08F8/14C08F2810/30C08F2810/50C08J3/246C08J3/28C08J5/18C08J2323/12C08J2451/00C08J2451/06C08L23/12C08L2203/16C08L2312/06C08F255/02C08F287/00C08L51/06C08L51/006
Inventor 邓鹏飏董德文宋岱瀛蒙礼杰周春发
Owner GUANGDONG TIANAN NEW MATERIAL