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Thermoplastic dynamic vulcanized brominated butyl rubber/polypropylene composition and preparation method thereof

A technology for vulcanizing bromobutyl and polypropylene compositions, applied in the field of composite materials, can solve the problems of high vulcanization activity of bromobutyl rubber, low production and use efficiency, complicated processes, etc. The effect of production efficiency and easy operation of the production process

Active Publication Date: 2017-01-04
广东金柏新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese patent application number 2014108288445 discloses a low-hardness medical thermoplastic bromobutyl rubber and its preparation method, but the whole preparation process requires five steps to complete, the process is complicated, and the phenolic resin vulcanization system used is easy to absorb moisture. Drying treatment is required before use, and the prepared bromobutyl rubber also needs to be dried before use, so the production and use efficiency is not high, and its formula system does not use anti-scorch agent, and the bromobutyl rubber has high vulcanization activity and is not The use of anti-scorch agents is extremely easy to scorch in actual production

Method used

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  • Thermoplastic dynamic vulcanized brominated butyl rubber/polypropylene composition and preparation method thereof
  • Thermoplastic dynamic vulcanized brominated butyl rubber/polypropylene composition and preparation method thereof
  • Thermoplastic dynamic vulcanized brominated butyl rubber/polypropylene composition and preparation method thereof

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preparation example Construction

[0052] The preparation method of the above-mentioned thermoplastic dynamic vulcanization bromobutyl rubber / polypropylene composition includes the following steps:

[0053] 1) Add bromobutyl rubber, polypropylene, rubber softening oil, and anti-scorching agent into the internal mixer, and mix well;

[0054] 2) Then add dialkyl peroxide, peroxy acid ester and N,N'-m-phenylene bismaleimide into the internal mixer and mix well;

[0055] 3) Transfer the blend obtained in step 2) to a single screw extruder for granulation;

[0056] 4) The blend obtained in step 3) is transferred to a parallel co-rotating twin-screw extruder for dynamic vulcanization and extrusion granulation to obtain a thermoplastic dynamic vulcanized bromobutyl rubber / polypropylene composition.

[0057] Preferably, the operating temperature of the internal mixer described in step 1) is 160-190°C, the rotor speed of the internal mixer is 70-120 rpm, and the mixing time is 5-20 min.

[0058] Preferably, the operating temperatu...

Embodiment 1

[0066] A thermoplastic dynamic vulcanization BIIR / PP composition, the raw material composition of which is as follows (parts by mass):

[0067] BIIR (bromine content 1.8wt%, German LANXESS): 100 copies;

[0068] PP: 55 copies;

[0069] Di-tert-butyl peroxide (Trigonox B): 0.5 parts;

[0070] Tert-butyl peroxybenzoate (Trigonox C): 0.5 parts;

[0071] N,N'-m-phenylene bismaleimide (HVA-2): 1 part;

[0072] Rubber softening oil: 150 parts;

[0073] MgO: 0.5 parts.

[0074] The preparation method of the above-mentioned thermoplastic dynamic vulcanization BIIR / PP composition includes the following steps:

[0075] 1) Put BIIR, PP, rubber softening oil and MgO into the internal mixer, mix evenly, the internal mixer temperature is 190℃, the internal mixer rotor speed is 120rpm, and the internal mixing time is 5min;

[0076] 2) Add DBP, TBPB and HVA-2 to the internal mixer, mix well, the internal mixer temperature is 50℃, the internal mixer rotor speed is 80rpm, and the internal mixing time is 5min;...

Embodiment 2

[0081] A thermoplastic dynamic vulcanization BIIR / PP composition, the raw material composition of which is as follows (parts by mass):

[0082] BIIR (2.0wt% bromine content, Sinopec Yanshan Petrochemical Company): 100 copies;

[0083] PP: 40 copies;

[0084] Di-tert-butyl peroxide (Trigonox B): 1 part;

[0085] Tert-Butyl Peroxybenzoate (Trigonox C): 1 part;

[0086] N,N'-m-phenylene bismaleimide (HVA-2): 2 parts;

[0087] Rubber softening oil: 130 parts;

[0088] MgO: 1 part.

[0089] The preparation method of the above-mentioned thermoplastic dynamic vulcanization BIIR / PP composition includes the following steps:

[0090] 1) Put BIIR, PP, rubber softening oil and MgO into the internal mixer, mix well, the internal mixer temperature is 170℃, the internal mixer rotor speed is 100rpm, and the internal mixing time is 10min;

[0091] 2) Add DBP, TBPB and HVA-2 to the internal mixer, mix well, the internal mixer temperature is 80℃, the internal mixer rotor speed is 60rpm, and the internal mixing...

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Abstract

The invention discloses a thermoplastic dynamic vulcanized brominated butyl rubber / polypropylene composition and a preparation method thereof. The thermoplastic dynamic vulcanized brominated butyl rubber / polypropylene composition is prepared from brominated butyl rubber, polypropylene, dialkyl peroxide, peroxyacidester, N,N-m-phenylenedimaleimide, rubber softening oil and a scorch retarder. The preparation method comprises the following steps: 1) performing internal mixing smelting on the brominated butyl rubber, polypropylene and rubber softening oil; 2) further adding a vulcanizing agent, and uniformly mixing; 3) transferring the commixture obtained in the step 2) into a single screw extruder, and performing extrusion pelleting; 4) transferring the commixture obtained in the step 3) into a parallel intermeshing co-rotating twin screw, performing dynamic vulcanization, and performing extrusion pelleting. The thermoplastic dynamic vulcanized brominated butyl rubber / polypropylene composition disclosed by the invention is good in air tightness and barrier property, excellent in mechanical property, feasible in direct injection molding, simple in production process, high in production efficiency, low in cost and easy to popularize and use.

Description

Technical field [0001] The invention relates to a thermoplastic dynamically vulcanized bromobutyl rubber / polypropylene composition and a preparation method thereof, and belongs to the field of composite materials. Background technique [0002] Bromobutyl rubber (BIIR) is an irreplaceable raw material for the manufacture of tubeless tires and an essential raw material for medical rubber products. In the early days, the rubber stopper materials used in the sanitary materials and medical products manufacturing industries were mainly natural rubber. However, natural rubber has biological safety defects, easily reacts with drugs, and has poor airtightness. Direct use in pharmaceutical packaging will cause the public The safe use of drugs poses a big threat. Document No. 462 (2000) No. 462 issued by the former State Food and Drug Administration in 2000 stipulates: penicillin sodium salt, penicillin potassium salt, ampicillin, streptomycin sulfate and other antibiotics and infusion pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/00C08L23/28C08L23/12C08K13/02C08K5/14C08K5/3415C08K3/22
CPCC08K2201/003C08K2201/014C08L91/00C08L2205/03C08L2207/14C08L2312/00C08L23/283C08L23/12C08K13/02C08K5/14C08K5/3415C08K2003/222
Inventor 王芳
Owner 广东金柏新材料科技股份有限公司
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