Preparation method of calcium carbonate modified butylbenzene/natural rubber composite material

A technology of natural rubber and styrene-butadiene rubber, which is applied in the field of preparation of filler-modified rubber, can solve the problems such as the decrease of strength, toughness and other properties of styrene-butadiene/natural rubber composite materials, and achieve a simple and easy preparation method, strong bonding and stability. The effect of performance improvement

Inactive Publication Date: 2012-11-28
ZHEJIANG UNIV OF TECH +2
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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 solve the problem that the strength, toughness and other properties of the styrene-butadiene / natural rubber composite material will be significantly reduced when the conventional method utilizes micron calcium carbonate to increase and reduce the cost of the styrene-butadiene / natural rubber.

Method used

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  • Preparation method of calcium carbonate modified butylbenzene/natural rubber composite material
  • Preparation method of calcium carbonate modified butylbenzene/natural rubber composite material
  • Preparation method of calcium carbonate modified butylbenzene/natural rubber composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0025] According to the mass ratio of each component in the formula in Table 1, (1) Add the mixture of styrene-butadiene rubber and natural rubber (molar ratio 3:1), modified micro-calcium carbonate, and active nano-calcium carbonate into the internal mixer at 120°C in sequence (2) Put the styrene-butadiene / natural rubber obtained in 1 at room temperature for 24 hours, add sulfur as a vulcanizing agent, and knead in an open mixer at 60°C for 30 minutes, and place the mixed rubber at room temperature for 24 hours Afterwards, vulcanize at 150°C for 15 minutes. The physical properties of the obtained vulcanizate are shown in Table 2. As can be seen from Table 2, as the content of modified calcium carbonate increases from 0 parts to 10 and 20 parts successively, the tensile strength of rubber increases first and then decreases, and the elongation at break and tear strength decrease slightly; The nano-calcium carbonate obviously has a greater influence on the elongation at break an...

Embodiment 5-8

[0033] According to the mass ratio of each component in the formula in Table 3, (1) Add styrene-butadiene rubber and natural rubber (molar ratio 1:1), modified micro-calcium carbonate, and active nano-calcium carbonate to the internal mixer at 120°C in sequence, and Refining for 15 minutes; (2) Put the styrene-butadiene / natural rubber obtained in 2 at room temperature for 24 hours, add sulfur as a vulcanizing agent, and knead in an open mill at 60°C for 30 minutes, and place the obtained mixed rubber at room temperature for 24 hours. Vulcanized at 150°C for 15 minutes, the physical properties of the obtained vulcanized rubber are shown in Table 4. It can be seen from Table 4 that the effect of calcium carbonate on the properties of the rubber is generally similar to that of Examples 1-4, and the comprehensive properties of the rubber obtained by mixing and modifying in Example 8 are the best.

[0034] Table 3 basic formula (mass parts)

[0035]

[0036] Table 4 Basic Prope...

Embodiment 9-11

[0040] According to the mass ratio of each component in the formula in Table 5, (1) Add styrene-butadiene rubber and natural rubber (molar ratio 1:3), modified micro-calcium carbonate, and active nano-calcium carbonate to the internal mixer at 120°C in sequence, and Refining for 15 minutes; (2) Put the styrene-butadiene / natural rubber obtained in 2 at room temperature for 24 hours, add sulfur as a vulcanizing agent, and knead in an open mill at 60°C for 30 minutes, and place the obtained mixed rubber at room temperature for 24 hours. Vulcanized at 150°C for 15 minutes, the physical properties of the obtained vulcanized rubber are shown in Table 6. It can be seen from Table 6 that as the weight ratio of micron / nanometer calcium carbonate in the hybrid modified rubber changes to 1:2, 1:1, and 2:1 in turn, the overall performance of the rubber is good, but basically it will change with the micron The increase of the weight ratio of / nano calcium carbonate presents a trend of decr...

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Abstract

The invention discloses a preparation method of a calcium carbonate modified butylbenzene / natural rubber composite material, which is characterized by comprising a micrometer calcium carbonate surface treatment through using a surface conditioning agent which contains unsaturated bond and a function group capable of reacting with a calcium carbonate surface group, and comprising a mixed modification technology for butylbenzene / natural rubber composite material through using modified calcium carbonate and active nanometer calcium carbonate. The increased amount and reduced cost of the butylbenzene / natural rubber by calcium carbonate can be ensured, and the good strength and toughness of butylbenzene / natural rubber can be kept. The method has the characteristic of simple production technology, and can be directly used in the industrial production.

Description

1. Technical field [0001] The invention relates to a preparation method of filler modified rubber, in particular to a preparation method of micron and nanometer calcium carbonate hybrid modified styrene-butadiene / natural rubber composite material. 2. Background technology [0002] Natural rubber is the variety with the best coordination of physical and mechanical properties and process performance among rubber materials, but some characteristics of natural rubber itself lead to its simultaneous performance fluctuations (4-10%) and the length of required vulcanization time. Difficult to master, easy to age and other disadvantages, it cannot be used directly without modification and mixing. Compared with natural rubber, styrene-butadiene rubber (SBR) has uniform quality, less foreign matter, excellent mechanical stability, and crack resistance. Therefore, the mixed rubber of styrene-butadiene rubber (SBR) / natural rubber is widely used in tires and vehicle tracks. . During th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L7/00C08K9/04C08K9/06C08K3/26C08K3/06C08K5/14C08J3/24
Inventor 王旭吴波震张孟欢朱林清姚钦峰
Owner ZHEJIANG UNIV OF TECH
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