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A kind of organic zinc vulcanization activator and preparation method thereof

A vulcanization activator and organic zinc technology, which is applied in the field of organic zinc vulcanization activator and its preparation, can solve the problems of high price and limited zinc reduction ability, and achieve the effects of low price, lower specific gravity and wide sources

Active Publication Date: 2020-08-11
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organozinc products currently on the market for rubber zinc reduction mainly include zinc monomethacrylate (such as DYMALINK709 of SARTOMER company), zinc α-ethylhexanoate (such as ZEH of struktol company) or some zinc soap compounds ( Such as SL-272, SL 273), the disadvantages of these zinc soaps are either limited zinc-reducing ability or expensive

Method used

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  • A kind of organic zinc vulcanization activator and preparation method thereof
  • A kind of organic zinc vulcanization activator and preparation method thereof
  • A kind of organic zinc vulcanization activator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In a 500mL three-necked flask equipped with a stirring and reflux device, add 85mmol (8.4g) of zinc hydroxide, 50mmol (6.1g) of benzoic acid and 280g of methylcyclohexane, and reflux at 102°C for 60min, cool and filter with suction The solvent was recovered and dried to obtain 13.4 g of a white powdery organozinc vulcanization active agent with a zinc content of 40.8%.

[0017] The FT-IR spectrum of this organozinc vulcanization activator is shown in figure 1 shown. Its microscopic appearance is elongated fibers mixed with a small amount of random particles, see figure 2 SEM photographs shown. XRD pattern see image 3 , Figure 4 is the TG-DTA spectrum.

Embodiment 2

[0019] In a 5L kneading reactor equipped with a reflux device, add 12mol (1193g) of zinc hydroxide, 7.5mol (916g) of benzoic acid and 1200g of n-heptane, stir and reflux at 99°C for 90min, then evaporate and recover the solvent to obtain a white Powdered organozinc vulcanization activator 1956g, zinc content 41.4%.

[0020] The organozinc activator synthesized in Examples 1 and 2, comparative example α-ethylhexanoic acid zinc and comparative example 99.7% indirect method zinc oxide are applied in all-steel radial tire tread rubber, and the compound formula is as follows (by weight ): 100 parts of SMR10; 40 parts of carbon black N339; 20 parts of precipitated silica; 2 parts of aromatic oil; 2 parts of protective wax; 1.5 parts of stearic acid; 1 part of silane coupling agent si69; 2 parts of agent 4020; 2.5 parts of sulfur powder; 1.5 parts of accelerator CZ; 0.5 parts of accelerator DM; 2.5 parts of vulcanization activator.

[0021] The tread rubber mixing process adopts a t...

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Abstract

The invention relates to an organic zinc vulcanizing activator and a preparation method thereof. The organic zinc vulcanizing activator is prepared through the following method: zinc hydroxide and benzoic acid are added into a reactor according to a molar ratio of (1.6 to 1.7) to 1, an alkane solvent with mass 1-50 times of that of the zinc hydroxide and a boiling point of 80-120 DEG C is added, reflux reaction is carried out for 30-120 min, after evaporation or cooling is conducted, suction filtration is conducted to recover the solvent, after drying is conducted, the white powdery organic zinc vulcanizing activator is obtained, and the zinc content of the organic zinc vulcanizing activator is 40-42%. The organic zinc vulcanizing activator can replace oxide zinc with an equal mass fraction, the content of zinc in a rubber product is greatly reduced, and the zinc is reduced by 50%, so that the organic zinc vulcanizing activator has the advantage of volume cost; the preparation method is simple, the reaction is mild and easy to control, the solvent can be recovered, no three waste is generated, and the preparation method of the organic zinc vulcanizing activator is a green synthesistechnology.

Description

technical field [0001] The invention relates to a vulcanization activator in a rubber vulcanization process, in particular to an organozinc vulcanization activator and a preparation method thereof. Background technique [0002] As a major branch of the world industry, the rubber industry plays a very important role in the economy and society. The rubber vulcanization activator refers to the ability to increase the activity of the accelerator after adding the rubber material, reduce the amount of the accelerator, shorten the vulcanization time, and increase the exchange rate. A kind of accelerator additive. Zinc oxide is used as a rubber vulcanization activator, and the dosage is about 2.5-5phr. With the increasing awareness of the world's low-carbon economy and emission reduction, the problem of zinc pollution in the rubber industry has attracted more and more attention. The high zinc content, high density, and high heavy metal ion content of zinc oxide have continuously af...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L91/00C08L91/06C08K13/02C08K5/098C08K3/04C08K3/36C08K3/06C07C51/41C07C63/08
CPCC07C51/412C07C51/418C07C63/08C08K5/098C08L7/00C08L91/00C08L91/06C08K13/02C08K3/04C08K3/36C08K3/06
Inventor 孔振兴李桂英戴子林
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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