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Modified butadiene rubber, composite material and preparation method thereof

A technology of butadiene rubber and composite materials, which is applied in the field of rubber composite materials, and can solve the problems of regularity reduction, change, and complex modification process, etc.

Active Publication Date: 2020-11-17
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the problem is that these methods are generally more complicated. Different reinforcing agents need to choose different modifiers, and the stability of the rubber after compounding depends on the degree of filler modification, which will inevitably lead to operational difficulties in industrial processes. and cost increase
[0004] Many scholars also post-modify the rubber matrix, which will change or even destroy the main chain structure of the rubber, and the cis-1, 4 regularity will decrease, which will affect the elasticity of the material, and the residual modified substances and newly produced substances are difficult to remove. , the inhomogeneity of the modification, etc. will cause the material to affect the material performance, and the modification process is complicated

Method used

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  • Modified butadiene rubber, composite material and preparation method thereof
  • Modified butadiene rubber, composite material and preparation method thereof
  • Modified butadiene rubber, composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Preparation of epoxy myrcene: first myrcene is completely dissolved in dichloromethane, put in the refrigerator and freeze for 2h to take out, slowly add m-chloroperoxybenzoic acid (m- CPBA), return to room temperature, TLC monitors the reaction until the reaction of the raw material is complete, add 2M aqueous sodium hydroxide solution to neutralize the excess acid, extract with dichloromethane and water, anhydrous magnesium sulfate handles the organic phase, then filters and distills under reduced pressure, finally Separation and purification by column chromatography yielded a colorless transparent liquid with a yield of 83.1%.

[0065] 1 H NMR (400MHz, CDCl 3 ):6.38(1H),5.27(1H),5.07(3H),2.76(1H),2.44(1H),2.32(1H),1.77-1.73(2H),1.31(3H),1.26(3H).

[0066] 13 C NMR (100MHz, CDCl 3 ): 145.5, 138.6, 116.1, 113.4, 64.1, 58.4, 28.1, 27.6, 24.9, 18.8.

[0067] (2) Preparation of pyridyl hydroxy myrcene: adopt epoxy myrcene: 2-mercaptopyridine (formula 1'): sodium ...

Embodiment 2

[0075] (1) preparation of pyridyl hydroxy myrcene: with embodiment 1;

[0076] (2) preparation of pyridyl hydroxy myrcene modified butadiene rubber: with embodiment 1;

[0077] (3) Preparation of composite material: The obtained copolymerized rubber is kneaded, banburyed and vulcanized: 100 parts of rubber, 20 parts of white carbon black, 4 parts of zinc oxide, 2 parts of SA, 1 part of 4010N / A, 1.5 parts of CZ, 0.5 parts of D, 1.5 parts of S; banburying for 20 minutes, kneading for 10 minutes until evenly mixed, and vulcanizing for 40 minutes to obtain a composite material containing 20 parts of polar filler white carbon black;

[0078] The composite material was characterized, SEM and TEM showed that the particle size distribution of the filler particles was: 0.01-0.15 μm, the average particle size was 0.12 μm; the mechanical performance test showed that the elongation at break was 580%, and the breaking strength was 6.8MPa, 100 The % elongation strength is 4.2MPa, the 100% ...

Embodiment 3

[0080] (1) preparation of pyridyl hydroxy myrcene: with embodiment 1;

[0081] (2) preparation of pyridyl hydroxy myrcene modified butadiene rubber: with embodiment 1;

[0082] (3) Preparation of composite material: The obtained copolymerized rubber is kneaded, banburyed and vulcanized: 100 parts of rubber, 30 parts of white carbon black, 4 parts of zinc oxide, 2 parts of SA, 1 part of 4010N / A, 1.5 parts of CZ, 0.5 parts of D, 1.5 parts of S; banburying for 20 minutes, kneading for 10 minutes until evenly mixed, and vulcanizing for 40 minutes to obtain a composite material containing 30 parts of polar filler white carbon black;

[0083]Characterize the composite material, SEM and TEM show that the particle size distribution of filler particles is: 0.01~0.35μm, the average particle size is 0.25μm; mechanical properties test shows: the elongation at break is 680%, the breaking strength is 12.1MPa, 100 The % elongation strength is 5.6MPa, the 100% strain storage modulus is 0.21M...

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Abstract

The invention discloses modified butadiene rubber which is characterized by being prepared from the following raw materials in parts by mole: 0.8 to 2.0 parts of a polar group-containing compound, 40to 80 parts of a solvent A, 1.0 to 2.0 parts of a Lewis alkali, 0.8 to 2.5 parts of epoxy myrcene, 5 to 20 parts of a solvent B, 5.5 to 30 parts of a protective agent, 100 parts of 1,3-butadiene, 3 to15 parts of an activating agent, 0.0005 to 0.004 part of an electron donor and 0.00025 to 0.001 part of a nickel compound. The invention also discloses a composite material adopting the modified butadiene rubber and a preparation method of the composite material. Compared with the prior art, the modified butadiene rubber is modified from the source and has excellent compatibility with a filler.

Description

technical field [0001] The invention relates to the technical field of rubber composite materials, in particular to a modified butadiene rubber, a composite material and a preparation method thereof. Background technique [0002] The rubber industry has been a complete industrial process system since its appearance. At present, the work that people do is mainly to modify rubber on the basis of the previous ones. Pure rubber products do not have excellent performance. Common rubber products need to be reinforced with fillers, and can only be used after processing. The most common reinforcing agents are carbon black, silica, fiber, Polyester, kaolin, montmorillonite, glass fiber, graphene, etc., the purpose is to improve the processing performance of rubber and improve the mechanical properties of rubber, broaden its application fields, and also add sulfur, accelerators, anti-aging agents due to processing needs , Oxidation, stearic acid polar additives, etc. But the problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F236/06C08F236/14C08L9/00C08L67/00C08L77/00C08K13/04C08K7/26C08K3/22C08K5/47C08K13/02C08K3/06
CPCC08F236/06C08K13/04C08K7/26C08K3/22C08K5/47C08L9/00C08K2201/011C08K2003/2296C08L2205/16C08F236/14C08L67/00C08K13/02C08K3/06C08L77/00
Inventor 龚狄荣唐福明徐月超胡中瀚罗琬惟
Owner NINGBO UNIV
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