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Low-temperature-resistant polyolefin grafted maleic anhydride flexibilizer used for nylon and preparation method of flexibilizer

A technology of grafting maleic anhydride and maleic anhydride, which is applied in the field of toughening agent and preparation of polyolefin grafted maleic anhydride for low temperature resistant nylon. Improvement and other issues, to achieve the effect of improving low temperature impact performance, improving compatibility, and low production cost

Active Publication Date: 2018-06-08
SHENYANG KETONG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of its excellent mechanical properties, good wear resistance, corrosion resistance, oil resistance, heat resistance, self-lubrication and other advantages, it is widely used in machinery, automobiles, electronic appliances, railways, furniture, construction and other industries However, nylon also has obvious disadvantages: its own high water absorption, low low temperature impact strength and deformation after water absorption, etc., and its application range is limited to a certain extent.
[0003] Nylon modification mainly solves two problems: one is the reduction of water absorption; the other is the improvement of impact strength

Method used

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  • Low-temperature-resistant polyolefin grafted maleic anhydride flexibilizer used for nylon and preparation method of flexibilizer
  • Low-temperature-resistant polyolefin grafted maleic anhydride flexibilizer used for nylon and preparation method of flexibilizer
  • Low-temperature-resistant polyolefin grafted maleic anhydride flexibilizer used for nylon and preparation method of flexibilizer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The following experiments are used to further verify different POE products.

[0028]Take 100 parts of polyolefin elastomer, 1.0 part of maleic anhydride, 4 parts of ionic polymer, 1.5 parts of polypropylene powder, 0.1 part of graft polypropylene, 0.2 part of zinc stearate, and 0.3 part of phthalate, Take different grades of polyolefin elastomers according to Table 1, mix them evenly in a high-speed mixer, and put them into a twin-screw extruder at 180°C in the first zone, 185°C in the second zone, 190°C in the third zone, and 195°C in the fourth zone. Five zones 200°C, six zones 200°C, seven zones 195°C, eight zones 190°C, nine zones 185°C, head 220°C, each zone dwell time 5 seconds, screw speed 590rpm, 0.075 parts of initiator DCP from the second zone The section cylinder is added, 0.075 parts of initiator BPO is added from the third section cylinder, 0.2 parts of antioxidant (antioxidant is a mixture of 1010 and 168, the mixing weight ratio is 1.5:1) is fed from the...

Embodiment 2

[0033] The dosage of initiator is further verified by experiments below.

[0034] Take 100 parts of polyolefin elastomer (DuPont 8842), 1.0 part of maleic anhydride, 4 parts of ionic polymer, 1.5 parts of polypropylene powder, 0.1 part of grafted polypropylene, 0.2 part of zinc stearate, 0.3 part of phthalate Formate, mix evenly in a high-speed mixer, take the initiator doses according to Table 2, and put them into a twin-screw extruder. The first zone is 180°C, the second zone is 185°C, the third zone is 190°C, the fourth zone is 195°C, and the fifth zone is 195°C. Zone 200°C, six zone 200°C, seven zone 195°C, eight zone 190°C, nine zone 185°C, head 220°C, dwell time of each zone 5 seconds, screw speed 590rpm, initiator DCP and BPO from the second section It is added with the third section cylinder (weight ratio of DCP and BPO is 1:1), 0.2 part of antioxidant (the mixture of antioxidant is 1010 and 164, the mixing weight ratio is 1.5:1) is fed from the side, after Stranding,...

Embodiment 3

[0039] The dosage of maleic anhydride is further verified by experiments below.

[0040] Take 100 parts of polyolefin elastomer (DuPont 8842), 4 parts of ionic polymer, 1.5 parts of polypropylene powder, 0.1 part of grafted polypropylene, 0.2 part of zinc stearate, 0.3 part of phthalate, according to the table 3. Take the amount of maleic anhydride and mix them evenly in a high-speed mixer. Extrusion process: After the materials are mixed evenly, they are put into a twin-screw extruder. Zone 195°C, five zone 200°C, six zone 200°C, seven zone 195°C, eight zone 190°C, nine zone 185°C, head 220°C, dwell time of each zone 5 seconds, screw speed 590rpm, 0.075 parts of initiator DCP is added from the second cylinder, 0.075 parts of initiator BPO is added from the third cylinder, and 0.2 parts of antioxidant (antioxidant is a mixture of 1010 and 1076, the mixing weight ratio is 1.5:1) is fed from the side , after pulling, cooling and dicing;

[0041] Nylon was prepared as follows: ...

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Abstract

The invention belongs to the field of polymer materials, and in particular relates to a low-temperature-resistant polyolefin grafted maleic anhydride flexibilizer used for nylon and a preparation method of the flexibilizer. The flexibilizer comprises the following raw materials in parts by weight: 100 parts of a polyolefin elastomer, 0.3-1.5 parts of maleic anhydride, 2-6 parts of an ionic polymer, 1.0-2.0 parts of polypropylene powder, 0.05-0.15 part of graft polypropylene, 0.05-0.25 part of a lubricant, 0.1-0.3 part of a plasticizer, 0.05-0.2 part of an initiator, and 0.1-0.3 part of an antioxidant. According to the flexibilizer provided by the invention, the maleic anhydride is grafted through the polyolefin elastomer, the polarity of the polyolefin elastomer is enhanced, and the grafted polyolefin elastomer can be used as a flexibilizer, an interfacial modifier and a compatibilizer of the nylon; and the flexibilizer can obviously improve the compatibility of the polyolefin elastomer and a strong-polarity nylon material, and can effectively improve the low-temperature impact performance.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a toughening agent for grafting maleic anhydride with polyolefin for low temperature resistant nylon and a preparation method thereof. Background technique [0002] Nylon is a general-purpose engineering plastic. It was the first resin developed by DuPont to prepare fibers. It was mass-produced in 1939. In the 1950s, it began to develop and produce injection molding products to replace metal to meet the lightweight requirements of downstream industrial products. , to reduce costs. Because of its excellent mechanical properties, good wear resistance, corrosion resistance, oil resistance, heat resistance, self-lubrication and other advantages, it is widely used in machinery, automobiles, electronic appliances, railways, furniture, construction and other industries However, nylon also has obvious shortcomings: its own water absorption, low low temperature impact strength and deform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L51/06C08L23/08C08L23/12C08K13/02C08K5/098C08K5/12C08K5/134B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/92704C08L77/02C08L77/06C08L2205/025C08L2205/035C08L51/06C08L23/0869C08L23/12C08K13/02C08K5/098C08K5/12C08K5/1345
Inventor 吕通建
Owner SHENYANG KETONG PLASTIC
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