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Blend composite damping material of polyisoprene and poly-tert-butylstyrene

A technology of composite damping material and tert-butyl styrene, which is applied in the field of blending composite damping materials of polyisoprene and poly-p-tert-butyl styrene, can solve problems such as narrow damping interval, and achieve easy adjustment and convenience. The effect of adjustment

Active Publication Date: 2017-06-30
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect of the narrow damping interval of the existing blended composite damping material, thereby providing a kind of polyisoprene and poly-tert-butylstyrene co-polymer with wide temperature range damping properties. composite damping material

Method used

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  • Blend composite damping material of polyisoprene and poly-tert-butylstyrene
  • Blend composite damping material of polyisoprene and poly-tert-butylstyrene
  • Blend composite damping material of polyisoprene and poly-tert-butylstyrene

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Effect test

Embodiment 1

[0026] Based on the mass parts of isoprene rubber, 100 mass parts of isoprene rubber (weight average molecular weight: 138000) and 67 mass parts of poly-p-tert-butylstyrene (weight average molecular weight: 2600000) were dissolved in toluene and mixed and then the toluene was volatilized to obtain a blended composite damping material of isoprene rubber and poly-p-tert-butylstyrene. The blended composite damping material was molded to obtain a disc with a diameter of 8 mm and a thickness of 1 mm. The wafer was subjected to dynamic temperature scanning on the ARES-G2 rheometer using a parallel plate fixture with a diameter of 8mm, the frequency was 1rad / s, the temperature was -80 to +100°C, and the heating rate was 5°C / min. It is found that the blended composite damping material has a temperature range of -50 to +120°C in the temperature range of tan>0.3, and the blended composite damping material in this range has excellent damping performance.

Embodiment 2

[0028] Based on the mass parts of industrial isoprene rubber, 100 mass parts of industrial isoprene rubber, 67 mass parts of poly-p-tert-butylstyrene (weight average molecular weight: 50000-100000), 2.5 mass parts of sulfur, 1.5 mass parts One part of vulcanization aid (one or more selected from thiazole accelerator, sulfenamide accelerator, thiuram accelerator and stearic acid) was dissolved in toluene and mixed uniformly, and then the toluene was volatilized to obtain A blended composite damping material of industrial isoprene rubber, poly-p-tert-butylstyrene, sulfur and the vulcanization aid, the blended composite damping material is molded to obtain a disc with a diameter of 8mm and a thickness of 1mm, and then The disc is vulcanized at 120°C for about 1 hour with an ARES-G2 rheometer, and the vulcanization curve is shown in figure 2 As shown, wherein: G' in the figure represents the storage modulus, and G" represents the loss modulus. On the rheometer, a parallel plate f...

Embodiment 3

[0030] Based on the mass parts of natural rubber, 100 parts by mass of natural rubber, 67 parts by mass of poly-p-tert-butylstyrene (weight average molecular weight: 187000), 1.0 parts by mass of sulfur, 0.5 parts by mass of vulcanization aid ( One or more selected from thiazole accelerators, sulfenamide accelerators, thiuram accelerators and stearic acid), 1.0 parts by mass of paraffin are dissolved in toluene and mixed uniformly, and then the toluene is volatilized to obtain A blended composite damping material of natural rubber, poly-p-tert-butylstyrene, sulfur, paraffin and the vulcanization aid, the blended composite damping material is molded to obtain a disc with a diameter of 8mm and a thickness of 1mm, and then The discs were vulcanized at 120°C for about 1 hour using an ARES-G2 rheometer. On the rheometer, a parallel plate fixture with a diameter of 8 mm was used to perform dynamic temperature scanning at a frequency of 1 rad / s, a temperature of -80 to +120° C., and ...

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Abstract

The invention belongs to a compatible blend with wide temperature domain damping properties, and especially relates to a blending composite damping material of polyisoprene and poly(p-tert-butylstyrene). The blending composite damping material is prepared by mixing polyisoprene, poly(p-tert-butylstyrene), a vulcanizing agent, a vulcanizing auxiliary agent and the like. Compared with a conventional damping material, the blending composite damping material has the advantages of good compatibility, wide effective damping temperature range, easy adjustment, damping property at room temperature and the like.

Description

technical field [0001] The invention belongs to a compatible blend with wide temperature range damping properties, in particular to a blended composite damping material of polyisoprene and poly-tert-butylstyrene. Background technique [0002] Polymers exhibit remarkable mechanical and shock-damping properties across their glass transition temperature interval; however, under normal conditions, the glass transition temperature interval of polymers spans only a narrow temperature range, so the effective dissipation of mechanical shock Diffusion can only occur within this narrow glass transition temperature range. To make matters worse, the glass transition range of most polymers is not at room temperature. In order to widen the glass transition temperature range of the polymer and adjust the temperature at which the glass transition occurs, it is usually necessary to make a composite material from two polymers whose glass transition temperatures are far apart by a certain met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/00C08L7/00C08L25/16
CPCC08L7/00C08L9/00C08L25/16C08K13/02C08K3/06C08K5/47C08K5/44C08K5/40C08K5/09
Inventor 刘琛阳阎志超张宝庆
Owner INST OF CHEM CHINESE ACAD OF SCI