A kind of high-performance non-polar rubber material and preparation method thereof

A technology of non-polar rubber and polar rubber, which is applied in the field of high-performance non-polar rubber materials and its preparation, and can solve the problems of limited energy dissipation and enhancement

Active Publication Date: 2021-05-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the enhancement of energy dissipation by relying solely on sacrificial networks is very limited

Method used

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  • A kind of high-performance non-polar rubber material and preparation method thereof
  • A kind of high-performance non-polar rubber material and preparation method thereof
  • A kind of high-performance non-polar rubber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]Add nitrile butadiene rubber, copper sulfate (CuSO), and styrene-butadiene rubber to an internal mixer and mix at room temperature for 20 minutes to obtain a mixed rubber; heat and press the mixed rubber at 180 degrees for 20 minutes; Under room temperature conditions, rubber activator zinc oxide and stearic acid, accelerator CZ (N-cyclohexyl-2-benzothiazole sulfenamide), accelerator DM (2,2'-dithiodibenzothiazole ), and sulfur were sequentially added to the above-mentioned rubber mixture, and the mixing time was 8 minutes; the obtained rubber mixture was vulcanized at 150°C according to the normal curing time, and the addition amount of CuSO, the ratio of the two phases and the hot-pressing temperature were changed to obtain Samples 1-7. The specific formula is shown in Table 1 (Table 1 is the formula table of the comparison sample and the sample), and the unit in Table 1 is g, wherein, the hot-pressing temperature of sample 1 is 170° C., and the hot-pressing temperatur...

Embodiment 2

[0043] Add nitrile rubber, hindered phenol AO-80, and styrene-butadiene rubber to an internal mixer in sequence and mix for 10 minutes at room temperature, then raise the temperature to 135°C and mix for 10 minutes to obtain a mixed rubber; in the open mixer, mix the rubber at room temperature Activator zinc oxide, stearic acid, accelerator D (diphenylguanidine), accelerator DM (2, 2'-dithiodibenzothiazole), accelerator TMTD (C 6 h 12 N 2 S 4 ) and sulfur were sequentially added to the above rubber compound, and the mixing (opening) time was 10 minutes; the obtained compound rubber was vulcanized at 150°C according to the normal curing time, and by changing the amount of AO-80 added and the ratio of the two phases, Obtain comparative sample 3 and sample 8-10; Concrete formula is as shown in table 2 (table 2 is comparative sample and embodiment formula parameter list), and the unit in the table is g.

[0044] Table 2

[0045]

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Abstract

The invention discloses a high-performance nonpolar rubber material and a preparation method thereof. The method includes: adding polar rubber, functional additives and non-polar rubber to an open mill or an internal mixer to obtain a mixed rubber; kneading the mixed rubber at high temperature or hot pressing; and then kneading at room temperature Adding a vulcanization bag; finally, subjecting the obtained mixed rubber to hot press vulcanization to obtain vulcanized rubber. The invention utilizes the selective interaction between the functional auxiliary agent and the polar rubber to construct a dispersed phase based on hydrogen bonds or metal coordination bonds in the non-polar rubber matrix through mechanical blending. Under the action of external force, the hydrogen bonds or coordination bonds inside the dispersed phase are continuously broken and reconstructed, deforming the dispersed phase, thereby dissipating mechanical energy, thereby greatly improving the physical and mechanical properties of the non-polar rubber material. The method does not rely on fillers, can realize high-efficiency reinforcement of non-polar rubber, has the advantages of simple process, no need to add additional processing equipment and few steps, and has a good application prospect.

Description

technical field [0001] The invention relates to high performance of rubber materials, in particular to a high-performance non-polar rubber material and a preparation method thereof. Background technique [0002] Rubber is of irreplaceable importance in the field of polymer materials due to its unique high elasticity. However, pure rubber has poor mechanical strength and usually requires reinforcement to be of practical value. Adding nano-fillers is one of the most common reinforcement methods. This method can obtain good strength and application flexibility, but generally requires adding dozens or even hundreds of fillers, which will bring additional filler dispersion / aggregation, Interfacial regulation, decreased elasticity, and high processing energy consumption. In addition, filling rubber with a high percentage of fillers will lead to a significant decrease in its specific strength, which greatly limits the application of rubber in aviation and aerospace equipment. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/06C08L9/02C08K3/30C08K3/22C08K5/09C08K5/47C08K13/02
CPCC08K2003/2296C08K2003/3045C08K2201/014C08L9/06C08L9/02C08K3/30C08K3/22C08K5/09C08K5/47C08K13/02
Inventor 郭宝春张丽洁黄晶唐征海张旭辉
Owner SOUTH CHINA UNIV OF TECH
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