Preparation method for rubber/keramite nano-tube nano-composite material

A technology of halloysite nanotubes and nanocomposites, which is applied in the field of preparation of rubber and/or halloysite nanotube nanocomposites, and can solve the problem of poor compatibility between halloysite nanotubes and rubber matrix and the difficulty in obtaining the performance of composite materials Significantly improve the difficulty of forming nano-scale dispersion and other problems, achieve the effects of simplifying organic modification and nano-composite process, reducing the shortage of carbon black raw materials, and excellent toughening effect

Inactive Publication Date: 2009-01-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention is under the above-mentioned background, in order to solve the problems such as poor compatibility between halloysite nanotubes and rubber matrix, difficulty in forming nanoscale dispersion, poor interfacial bonding, and difficulty in significantly improving the performance of composite materials, a rubber / Preparation method of halloysite nanotube nanocomposite material

Method used

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  • Preparation method for rubber/keramite nano-tube nano-composite material
  • Preparation method for rubber/keramite nano-tube nano-composite material
  • Preparation method for rubber/keramite nano-tube nano-composite material

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Embodiment 1

[0025] Styrene-butadiene rubber (SBR) and halloysite nanotubes (HNTs) were selected, and complexes of resorcinol and hexamethylenetetramine (RH) were used as modifiers. Formula (mass ratio): SBR 100, HNTs 0-80, RH 0-10, stearic acid 2, zinc oxide 5, accelerator CZ 1.5, accelerator DM 0.5, antioxidant 4010NA 1.5, sulfur 1.5. Mixing is carried out on a two-roll mill, first adding HNTs and RH, then adding other compounding agents, and finally adding sulfur, and then vulcanizing on a flat vulcanizing machine, the vulcanizing temperature is 150°C, and the vulcanization time is determined according to the positive vulcanization time measured by the vulcanization meter. .

[0026] Table 1 lists the mechanical properties of SBR / HNTs / RH nanocomposite vulcanizates with different HNTs contents and different RH contents. It can be seen from the table that with the increase of the amount of HNTs and RH, the modulus stress, tensile strength, tear strength and hardness of SBR / HNTs / RH vulcan...

Embodiment 2

[0031] Natural rubber (NR) and butadiene rubber (BR) are used together, HNTs is used as nano filler, and p-tert-butylphenolic resin (TBPF) is used as modifier. Formula (mass ratio): NR 80, BR 20, HNTs 0-60, TBPF 0-6, stearic acid 2, zinc oxide 5, accelerator CZ 1.5, accelerator DM 0.5, antioxidant 4010NA 1.5, sulfur 1.5. Mixing on the open mill, first add NR and BR for blending, then add HNTs and TBPF, then add other compounding ingredients, and finally add sulfur to obtain a mixed rubber. The mixed rubber is vulcanized on a flat vulcanizer, the vulcanization temperature is 143°C, and the vulcanization time is determined according to the positive vulcanization time measured by the vulcanizer.

[0032] The mechanical properties of NR / BR / HNTs / TBPF nanocomposite vulcanizates are shown in Table 2 (NR / BR mass ratio 80 / 20). It can be seen from the table that with the increase of the amount of HNTs and TBPF, the modulus, tear strength and hardness of NR / BR / HNTs / TBPF vulcanizate all ...

Embodiment 4

[0042] Styrene-butadiene rubber and halloysite nanotubes (SBR / HNTs) were selected, and zinc methacrylate (ZDMA) was used as a modifier. Formula (mass ratio): SBR 100, HNTs 0-100, ZDMA 0-20, stearic acid 2, zinc oxide 5, accelerator CZ 1.5, dicumyl peroxide (DCP) 1, antioxidant 4010NA 1.5, sulfur 1.5. Mixing is carried out on an open mill, first adding HNTs and ZDMA, then adding other compounding agents, and finally adding sulfur and DCP, and then vulcanizing on a flat vulcanizing machine, the vulcanization temperature is 160 ° C, and the vulcanization time is according to the positive vulcanization time measured by the vulcanization meter.

[0043] Table 4 lists the mechanical properties of SBR / HNTs / ZDMA nanocomposites. It can be seen from the table that with the increase of ZDMA content, the mechanical properties of SBR / HNTs / ZDMA nanocomposites show a significant improvement trend. The 300% modulus stress, tensile strength, tear strength, elongation at break and Shore A har...

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Abstract

The invention relates to preparation method of rubber/ halloysite nanotube nano-composite material, the invention adopts the preparation method that the rubber, the halloysite nanotube and modifying agent are mixed according to the mass ratio of 100:5 to 100 : 0.5-20 through the ordinary rubber pugging equipment and technique, then the sulphation is performed through the ordinary sulphidizing process and equipment to realize the in-situ modification, and finally, the rubber/ halloysite nanotube nano-composite material with nano-dispersion, good interfacial bonding and good performance. Wherein, the modifying agent comprises compound in-situ generated phenolic resin, alkyl phenolic resin, modified rubber, methacrylic acid metal salt and one or more than one mixture (s) in the sulfur-containing organosilane coupling agent. The preparation method of rubber/ halloysite nanotube nano-composite material has the advantages that the defects that the rubber/ halloysite nanotube nano-composite material is difficult to be dispersed, the interfacial bonding is not good, the performance can not be improved observably can be overcome, and the preparation method can be applied in a variety of rubber products, rubber toughening plastics and binding agents and the like.

Description

(1) Technical field [0001] The invention relates to the technical field of nanocomposite materials, in particular to a method for preparing rubber and / or halloysite nanotube nanocomposite materials. (2) Background technology [0002] Reinforcing fillers are the largest non-rubber components in vulcanized rubber. At present, the reinforcing filler for rubber is still mainly carbon black. In recent years, the carbon black industry is facing the problem of shortage of raw material oil sources and skyrocketing prices. At the same time, the development of high-performance rubber products such as green tires has put forward many new requirements for reinforcing fillers. Therefore, the research and development of non-carbon black reinforcing fillers has become the current An important development direction of the rubber industry. [0003] Since the end of the 20th century, some inorganic nanomaterials, such as montmorillonite, nano-calcium carbonate, nano-silica, carbon nanotubes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00C08K3/34C08L61/06C08L15/00C08L23/26C08L53/02C08L13/00C08L51/04C08K5/098C08K5/548
Inventor 贾志欣罗远芳郭宝春杨树颜贾德民
Owner SOUTH CHINA UNIV OF TECH
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