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Method for preparing wide-temperature-range high-frequency high-damping rubber materials

A damping rubber, high frequency technology, which is applied in the preparation of wide temperature range, wide frequency and high damping rubber materials, and the preparation of rubber-based damping materials, can solve the problem of poor high temperature stability of damping materials, difficulty in removing organic solvents, and reduce damping peaks. Height and other issues, to achieve the effect of simple and reliable processing, improved mechanical properties, and improved damping performance

Inactive Publication Date: 2014-04-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example: Chinese patent 201110165757.2 uses a blending method to blend rubber with rubber or rubber with plastic to have a microscopic phase-separated structure, thereby achieving a method of widening the damping temperature range. However, widening the temperature range also reduces The height of the damping peak; Chinese patent 200910073985.X adopts the copolymerization method, (Chinese patent 200510020174.5 adopts the interpenetrating network polymer method to obtain a high damping material in a wide temperature range, but its cost is high, the process is complicated, and the actual operation is difficult. Organic solvents Difficult to eliminate, causing pollution to the environment, and generally used as coatings, rarely used as structural materials; adding damping functional additives is also an effective way to widen the damping temperature range, such as the addition of phenolic organic small molecule damping as disclosed in Chinese patent 200710063460.9 The method of functional additives, but the high temperature stability of the damping material obtained by this method is not good

Method used

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  • Method for preparing wide-temperature-range high-frequency high-damping rubber materials
  • Method for preparing wide-temperature-range high-frequency high-damping rubber materials
  • Method for preparing wide-temperature-range high-frequency high-damping rubber materials

Examples

Experimental program
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Effect test

Embodiment 1

[0037] At 50°C, 100g of ENR-40 type epoxidized natural rubber was masticated on the open mill for 3 minutes, and then covered with rolls, adding 8g of zinc oxide, 5g of stearic acid, 5g of basic magnesium carbonate, 40g of N220 type carbon black, 8 g of dibutyl phthalate, 0.1 g of acidified multi-walled carbon nanotubes, 4 g of dibenzothiazole disulfide (abbreviation: DM), and 30 g of 2402 tert-butylphenol formaldehyde resin were mixed evenly to prepare a rubber compound; After standing for 8 hours, at a temperature of 150°C and a pressure of 100kgf / cm 2 Under the condition of vulcanizing on a flat vulcanizing machine for 45 minutes, a rubber material with wide temperature range, wide frequency and high damping can be obtained.

Embodiment 2

[0039]At 50°C, 100g of ENR-50 type epoxidized natural rubber was masticated on the open mill for 3 minutes, and then covered with rolls, adding 6g of zinc oxide, 1g of stearic acid, 1g of basic magnesium carbonate, 30g of N330 carbon black, Acidified multi-walled carbon nanotubes 0.2g, dibenzothiazole disulfide 1g, stannous chloride 0.2g, SP-1045 tert-octylphenol formaldehyde resin 5g were mixed evenly, and prepared into a rubber compound; after standing for 12 hours , at a temperature of 150°C and a pressure of 150kgf / cm 2 Next, vulcanize on a flat vulcanizing machine for 60 minutes to produce a rubber material with wide temperature range, wide frequency and high damping.

Embodiment 3

[0041] At 80°C, put 1000g of ENR-40 epoxidized natural rubber, 1500g of N330 carbon black, and 100g of dibutyl phthalate into an internal mixer and mix for 10 minutes to obtain a masterbatch, which was cooled at room temperature and weighed. Get the above-mentioned masterbatch 260g, then add acidified multi-walled carbon nanotubes 0.05g, zinc oxide 5g, stearic acid 2g, basic magnesium carbonate 1g, dibenzothiazole disulfide 5g, SP-1055 bromine on the open mill Mix 30g of methyl tert-octylphenol formaldehyde resin evenly to prepare a rubber compound; after standing for 12 hours, at a temperature of 160°C and a pressure of 100kgf / cm 2 Next, vulcanize on a flat vulcanizing machine for 25 minutes to produce a rubber material with wide temperature range, wide frequency and high damping.

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Abstract

The invention discloses a method for preparing wide-temperature-range high-frequency high-damping rubber materials. The method includes the following steps of preparing rubber compound by epoxidation natural rubber, softener, filler, damping intensifier, vulcanizing auxiliary and vulcanizing agent at the temperature of 40-150 DEG C, standing, vulcanizing in a certain condition to prepare the wide-temperature-range high-frequency high-damping rubber materials. Damping performance is improved by utilizing the epoxidation natural rubber as rubber base body and acidulated multiwall carbon nano tube. By utilizing phenolic resin as vulcanizer and double-bond generation chemical reaction of end reactive group in the phenolic resin and the epoxidation natural rubber, the epoxidation natural rubber can be subjected to crosslinking, and meanwhile, effective temperature range and frequency range of damping of the epoxidation natural rubber damping materials are broadened by means of hydrogen bond action between epoxy group of the epoxidation natural rubber and phenolic hydroxyl group of the phenolic resin, and has excellent mechanical performance. Further, the method for preparing wide-temperature-range high-frequency high-damping rubber materials has the advantages of simplicity in process and low cost.

Description

technical field [0001] The invention belongs to the field of material chemistry, and relates to a preparation method of a rubber-based damping material, in particular to a preparation method of a wide temperature range, wide frequency and high damping rubber material. Background technique [0002] With the rapid development of modern industry, the hazards caused by mechanical vibration and noise are becoming more and more serious in engineering, and the threat of natural disasters such as earthquakes to the safety of people's lives and property is becoming more and more prominent. Shock and noise reduction technology is an urgent problem in today's society. One of the technical issues. [0003] Because different vibrations have different frequencies, such as vibrations caused by earthquakes and winds, the vibration frequency is lower than 20Hz, while the vibration frequency of various mechanical equipment is as high as several kilohertz. Therefore, it is of great practical s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L15/00C08L61/06C08K13/06C08K7/00C08K3/04C08K3/22C08K5/09C08K3/26C08K5/47C08K3/16C08K5/12C08K3/36
Inventor 卢珣李绪军
Owner SOUTH CHINA UNIV OF TECH
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