White carbon black-loaded xanthogenate as well as preparation method and application thereof

A technology of xanthate and silica, applied in the fields of rubber additives and rubber vulcanization, to avoid surface and volatilization, less dosage and less solvent toxicity

Inactive Publication Date: 2018-06-08
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem of carcinogenic nitrosamine compounds produced by secondary amine-based accelerators in the vulcanization process of the current rubber industry, and to provide a green, environmentally friendly and efficient preparation of white carbon black-loaded xanthate method

Method used

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  • White carbon black-loaded xanthogenate as well as preparation method and application thereof
  • White carbon black-loaded xanthogenate as well as preparation method and application thereof
  • White carbon black-loaded xanthogenate as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] See Table 1 for the basic formulation of the rubber prepared with the vulcanization accelerator white carbon black-loaded xanthate and the comparative accelerator M, the vulcanization characteristic parameters of the prepared rubber are shown in Table 2, and the physical and mechanical properties of the prepared rubber are shown in Table 3 .

[0047] It can be seen from Table 2-4 that silica-loaded xanthate can promote vulcanization, basically achieving the same effect as accelerator M.

[0048] Table 1

[0049]

[0050] The unit in Table 1 is parts by mass (phr), and X in formula No. 2 is xanthate loaded with white carbon black.

[0051] Table 2

[0052]

[0053] table 3

[0054]

Embodiment 2

[0056] Compared with Example 1, in Example 2, the amount of Accelerator X in Sample No. 2 was adjusted to 2.5. The basic formulation of the rubber prepared with vulcanization accelerator white carbon black-loaded xanthate and the comparative accelerator M is shown in Table 4, the vulcanization characteristic parameters of the prepared rubber are shown in Table 5, and the physical and mechanical properties of the prepared rubber are shown in Table 6 .

[0057] It can be seen from Table 5 that compared with the accelerator M, the silica-loaded xanthate can significantly increase the vulcanization rate and shorten the normal vulcanization time, and at the same time the minimum torque and maximum torque of the prepared rubber are increased .

[0058] It can be seen from Table 6 that, compared with accelerator M, silica-loaded xanthate has a better effect on improving the mechanical properties of rubber such as tensile strength, tear strength and elongation at break.

[0059] Tab...

Embodiment 3

[0067] Compared with Example 1 and Example 2, in Example 3, the amount of accelerator X in sample No. 2 was adjusted to 5. The basic formula for preparing rubber with vulcanization accelerator white carbon black-loaded xanthate and comparative accelerator M is shown in Table 7, the vulcanization characteristic parameters of the prepared rubber are shown in Table 8, and the physical and mechanical properties of the prepared rubber are shown in Table 9 .

[0068] It can be seen from Table 8 that compared with the accelerator M, the silica-loaded xanthate can significantly increase the vulcanization rate and shorten the normal vulcanization time. At the same time, the minimum torque and maximum torque of the prepared rubber are different. Increase; Compared with Example 2, the vulcanization rate decreased, the positive vulcanization time increased, and the minimum torque and maximum torque both decreased.

[0069] It can be seen from Table 9 that, compared with accelerator M, si...

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Abstract

The invention relates to white carbon black-loaded xanthogenate as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving white carbon black subjected to modified treatment into a solvent, adding an alkaline solution, stirring for 10 to 100 minutes, reacting with carbon disulfide at 5 to 80 DEG C and under the alkaline condition, andcontinuously stirring for 1 to 48 hours, wherein the molar ratio of the carbon disulfide to the alkali is 1:(1-3.6); adding a zinc salt solution with the mass percentage of 0.5 to 30 percent, stirringunder the condition of 20 to 80 DEG C for 0.5 to 24 hours, and performing static settlement, wherein the mass ratio of the white carbon black to the zinc salt is 1:(2-25); and filtering and drying the reaction product to prepare the loaded xanthogenate, wherein the structure is as follows: the white carbon black serves as a carrier, and the oxygen atom in -OH on the surface of the white carbon black is connected with carbon atom in the xanthogenate (the formula is as shown in the description). In the rubber formula, the white carbon black-loaded xanthogenate is added to serve as a vulcanization accelerator, good vulcanization effect can be achieved, nitrosamine is not generated in the rubber vulcanization and product use processes, and the white carbon black-loaded xanthogenate is an efficient, non-toxic and environment-friendly novel rapid vulcanization accelerator.

Description

technical field [0001] The invention relates to the fields of rubber additives and rubber vulcanization, in particular to a white carbon black-loaded xanthate and its preparation method and application. Background technique [0002] Vulcanization accelerator is one of the most important rubber additives, accounting for more than 40% of rubber additives. It has the functions of promoting rubber vulcanization, reducing vulcanization temperature, shortening vulcanization time, reducing the amount of sulfur and improving the physical and mechanical properties of vulcanized rubber. At the same time, it can reduce energy consumption. Most of the commonly used vulcanization accelerators in the rubber industry contain secondary amine groups, which are prone to carcinogenic nitrosamine compounds during the production of rubber products, which has become one of the major problems affecting human health. Therefore, research on new vulcanization accelerators with high efficiency, non-t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/12C08K3/36C08K5/38C08L7/00
Inventor 汪志芬吴杰张玉苍李思东方林游建华
Owner HAINAN UNIVERSITY
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