A kind of high fluidity nylon toughening agent and preparation method thereof

A high-fluidity, toughening agent technology, applied in the field of polymer materials, can solve the problem that the impact of toughening agents on the processing fluidity of nylon materials cannot be reduced, so as to reduce the impact, improve the toughening effect, and improve the gap The effect of impact strength

Active Publication Date: 2021-12-21
NINGBO NENGZHIGUANG NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nylon toughening agent of the invention can effectively improve the low-temperature impact performance of nylon materials, but the fluidity of the toughening agent itself is almost unchanged compared with ordinary toughening agents, and cannot reduce the processing fluidity of the toughening agent for nylon materials. Impact

Method used

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  • A kind of high fluidity nylon toughening agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take the following raw materials according to parts by weight: the propylene-based elastomer is a propylene-ethylene copolymer with a propylene content of 84%, 90 parts; the vinyl elastomer (Dow's POE, 8150), 10 parts; the first graft monomer is Maleic anhydride, 2 parts; the second grafting monomer is styrene, 1 part; the initiator is dicumyl peroxide, 0.1 part; the diluent is acetone, 1 part.

[0031] Mix the above raw materials in a low-speed mixer for 20 minutes, and then add them to the twin-screw extruder. The temperature of the extruder zone 1 to zone 14 is set to 80°C, 160°C, 180°C, 190°C, 195°C, 195°C, 195°C , 195°C, 195°C, 190°C, 190°C, 180°C, 180°C, 180°C, the machine head is 190°C. The mixed material is melted and plasticized, kneaded and kneaded, extruded by a machine head, pelletized in a water ring, cooled, dehydrated, and blast-dried to obtain the product.

Embodiment 2

[0033]Take the following raw materials according to parts by weight: propylene-based elastomer is a propylene-ethylene copolymer with a propylene content of 92%, 70 parts; vinyl elastomer (Dow EPDM, 3745P), 30 parts; the first graft monomer is Maleic anhydride, 2 parts; The second grafting monomer is caprolactam, 1 part; Initiator is made up of dibenzoyl peroxide and dicumyl peroxide in a mass ratio of 1:2, 0.15 part; Thinner is Butanone, 1.5 parts.

[0034] Blend the above raw materials in a low-speed mixer for 20 minutes, then add them to the twin-screw extruder, and set the temperature from zone 1 to zone 14 of the extruder to 80°C, 160°C, 180°C, 190°C, 195°C, 195°C, 195°C , 195°C, 195°C, 190°C, 190°C, 180°C, 180°C, 180°C, the machine head is 190°C. The mixed material is melted and plasticized, kneaded and kneaded, extruded by a machine head, pelletized in a water ring, cooled, dehydrated, and blast-dried to obtain the product.

Embodiment 3

[0036] Take by weight the following raw materials: propylene-based elastomer is a propylene-octene copolymer with a propylene content of 88%, 60 parts; vinyl elastomer (Arkema EMA, 28MA07), 40 parts; the first grafting unit The body is glycidyl methacrylate, 5 parts; the second grafting monomer is styrene, 2.5 parts; the initiator is 2,5-dimethyl-2,5-bis(tert-butyl peroxy)hexane , 0.4 parts; the diluent is ethanol, 2 parts.

[0037] Blend the above raw materials in a low-speed mixer for 20 minutes, then add them to the twin-screw extruder, and set the temperature from zone 1 to zone 14 of the extruder to 80°C, 160°C, 180°C, 190°C, 195°C, 195°C, 195°C , 195°C, 195°C, 190°C, 190°C, 180°C, 180°C, 180°C, the machine head is 190°C. The mixed material is melted and plasticized, kneaded and kneaded, extruded by a machine head, pelletized in a water ring, cooled, dehydrated, and blast-dried to obtain the product.

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Abstract

The invention relates to the field of polymer materials, and discloses a high-fluidity nylon toughening agent and a preparation method thereof. The nylon toughening agent includes the following raw materials in parts by weight: 20-90 parts of propylene-based elastomer, 10-80 parts of vinyl elastomer, 0.3-5 parts of the first graft monomer, and 0.1-5 parts of the second graft monomer. parts, initiator 0.01~0.5 parts, diluent 0.1~2 parts. The preparation method of the nylon toughening agent comprises the following steps: after mixing the propylene-based elastomer, the vinyl elastomer, the first grafting monomer, the second grafting monomer, the initiator and the diluent, adding them to the extruder , melt plasticization, reactive extrusion, granulation, cooling, drying, that is, a high-fluidity nylon toughening agent. The nylon toughening agent of the present invention has better toughening effect and higher fluidity, can maintain its processing fluidity to the greatest extent while improving the notched impact strength of nylon products, and has a simple preparation method and a short production cycle , strong controllability, suitable for industrial production.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a high-fluidity toughening agent for toughening nylon and a preparation method thereof. Background technique [0002] Nylon is one of the five general-purpose engineering plastics. Nylon has a large output and a wide range of uses. It has excellent mechanical strength, heat resistance, oil resistance, weak acid resistance, alkali resistance and general solvent resistance. It is non-toxic, odorless, good electrical insulation, and good weather resistance. . The disadvantage of nylon is that its notched impact performance is average, and its products need post-humidity conditioning treatment to improve toughness. At the same time, nylon has a large water absorption rate, which affects the dimensional stability of products, increases production costs, and greatly limits its application. In order to solve the problem of insufficient toughness of nylon, it is generally improved by ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F255/04C08F255/02C08F222/06C08F220/32C08F255/06C08L77/02C08L51/06C08L51/04
CPCC08F255/04C08F255/02C08F255/06C08F255/026C08L77/02C08L2205/05C08F222/06C08L51/06C08L51/04C08L51/003
Inventor 赵平占建军程斌君张祥洲高培贾静璇张发饶
Owner NINGBO NENGZHIGUANG NEW MATERIALS TECH
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