Preparation method of modified illite for improving performance of natural rubber

A technology of natural rubber and illite, applied in chemical instruments and methods, fibrous fillers, dyeing and washing, etc., can solve the problems of insignificant improvement in the performance of composite materials and low improvement in mechanical properties, and achieve excellent mechanical properties. The effect of short reaction time and low reaction temperature

Inactive Publication Date: 2017-09-22
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the many difficulties in modifying illite, the performance improvement of composite materials is not obvious, and the improvement of various properties such as mechanical properties is relatively low.

Method used

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  • Preparation method of modified illite for improving performance of natural rubber
  • Preparation method of modified illite for improving performance of natural rubber
  • Preparation method of modified illite for improving performance of natural rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for preparing modified illite for improving the performance of natural rubber, comprising the following steps, and the following steps are carried out in sequence,

[0031] Step 1. Put illite into 0.5% HCl solution with a mass concentration of 0.5%, in which the solid-to-liquid ratio is 1:40 in g / ml, stir in a constant temperature water bath at 50°C at 600rad / min for 1.5h, and pickle the illite Stand still and filter after cooling down to normal temperature;

[0032] Step 2, the illite filtered in the step 1 is repeatedly stirred and rinsed in a three-necked flask with deionized water until the pH value of the deionized water in the three-necked flask is 7, and the illite obtained by filtering is washed in a blast type Dry in a constant temperature drying oven at 60°C for 24 hours, grind into powder particles, and obtain illite powder after pickling;

[0033] Step 3: Take 5g of the acid-washed illite obtained in the step 2, 200mL volume concentration of 50% is...

Embodiment 2

[0037] A method for preparing modified illite for improving the performance of natural rubber, comprising the following steps, and the following steps are carried out in sequence,

[0038] Step 1. Put illite into 5% HCl solution with a mass concentration of 5%, wherein the solid-to-liquid ratio is 1:40 in g / ml, stir in a constant temperature water bath at 70°C at 600rad / min for 2 hours, and statically pickle the illite Filter after cooling down to normal temperature;

[0039] Step 2, the illite filtered in the step 1 is repeatedly stirred and rinsed in a three-necked flask with deionized water until the pH value of the deionized water in the three-necked flask is 7, and the illite obtained by filtering is washed in a blast type Dry in a constant temperature drying oven at 60°C for 24 hours, grind into powder particles, and obtain illite powder after pickling;

[0040] Step 3: Take 5g of the acid-washed illite obtained in the step 2, 200mL volume concentration of 50% isopropan...

Embodiment 3

[0044] 1. Preparation of modified illite:

[0045] Take 10g illite and put it into 1% HCl solution, the solid-liquid ratio is 1:40 according to g / ml, 60°C constant temperature water bath, 600rad / min stirring for 1h, the illite after pickling is left to stand, cooled and then filtered;

[0046] Stir and rinse the three-necked flask with deionized water repeatedly until the pH value is 7, filter the sample and dry it for 24 hours, then grind it into powder particles to obtain illite after pickling;

[0047] Take 5g of the above acid-washed illite, add 200mL of 50% isopropanol aqueous solution and 0.4g of CTAB into a 500ml three-necked flask reactor. React under microwave and 80°C for 1h, let it stand at room temperature, centrifuge at 5000rad / min for 5min, dry at 60°C for 24h, and then use an agate mortar to grind to obtain CTAB modified illite.

[0048] 2. Preparation of illite and natural rubber composite materials

[0049] Mass ratio of refining materials: raw rubber 100, sul...

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Abstract

The invention relates to a preparation method of modified illite for improving performance of natural rubber, and belongs to the field of chemical engineering and technology. The method comprises: mixing illite powder and a certain concentration of hydrochloric acid, performing stirring, flushing the obtained product with distilled water and performing filtering to obtain acid-washed illite; and mixing acid-washed illite with cetyl trimethyl ammonium bromide in 50% of an isopropanol aqueous solution, carrying out a reaction, and performing centrifugation and drying to obtain modified illite. The prepared modified illite is mixed with natural rubber, and sulfuration is carried out to obtain an illite and natural rubber composite material. The prepared modified illite is high in modifier load, and compared with a modified illite made from a silicane coupling agent, the prepared modified illite is short in reaction time and low in reaction temperature. The cetyl trimethyl ammonium bromide (CTAB) used as a cationic modifier is cheaper than a silicane coupling agent, and the prepared modified illite can be well dispersed in rubber and is excellent in mechanical properties.

Description

technical field [0001] The invention belongs to the field of chemical engineering and technology, and in particular relates to a preparation method of modified illite for improving the performance of natural rubber. Background technique [0002] Clay mixed with rubber can improve the mechanical properties of rubber and reduce the cost of corresponding rubber products. The proportion of modified clay added to rubber is larger, and the performance of rubber is also greatly improved. This type of clay uses organic substances such as amine, phosphorus, and sulfur to replace the cations in the clay particle layer, so that the clay and rubber have a better affinity, especially the expansive clay, which is easier to modify and dope with rubber. composite material. [0003] An extra-large sandy non-expansive illite deposit was discovered in Antu County, Jilin Province. In order to broaden the application market of this kind of illite, a certain mesh number of illite powder was bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/42C09C3/04C09C3/08C08L21/00C08K13/06C08K9/04C08K3/34
CPCC09C1/42C01P2006/22C08K3/346C08K9/04C08K13/06C08K2201/003C09C3/003C09C3/006C09C3/041C09C3/08C08L7/00
Inventor 王树江苑春晖张国馗杨永恒尹丽
Owner CHANGCHUN UNIV OF TECH
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