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Low zinc rubber composition

A rubber composition, zinc hydroxide technology, applied in tire parts, transportation and packaging, special tires, etc., can solve the problems of low zinc content, zinc pollution, low rolling resistance, etc., achieve low zinc content, improve environmental performance , the effect of optimizing tire performance

Active Publication Date: 2019-02-22
SAILUN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the technical problem in the prior art that nanoparticles are easy to agglomerate and lead to zinc pollution, the purpose of the invention is to provide a low-zinc rubber composition, which has the advantages of low zinc content and low rolling resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] The indirect method of zinc oxide meets the requirements of the national standard GB / T3185-2016, and the content of zinc oxide is ≥99.7%, such as figure 1 As shown, it can be seen that the indirect method of zinc oxide is mostly rock sugar-like irregular square.

[0068] Ordinary nano zinc oxide A: meet the requirements of GB / T 19589-2004, the content of zinc oxide is ≥99.0%, and the specific surface area is 45m 2 / g, such as figure 2 Agglomeration is evident.

[0069] Nano-zinc oxide B: Nano-zinc oxide with zinc hydroxide as the carrier, the specific surface area is 45m 2 / g, wherein the mass fraction of zinc oxide is 80.2%, and the mass fraction of zinc hydroxide is 19.5%, that is, the present invention uses nano-zinc oxide, such as image 3 shown.

[0070] formula:

[0071]

[0072]

[0073] performance:

[0074]

[0075]In addition to acting as a vulcanization activator in the rubber vulcanization, crosslinking and aging process, zinc oxide can also...

Embodiment 2

[0080] Nano zinc oxide B in embodiment 2: take zinc hydroxide as the nano zinc oxide of carrier, specific surface area is 45m 2 / g, wherein the mass fraction of zinc oxide is 80.2%, and the mass fraction of zinc hydroxide is 19.5%, that is, the present invention uses nano-zinc oxide, such as image 3 shown.

[0081] The indirect method zinc oxide used in the comparison formula 2-1 meets the requirements of the national standard GB / T3185-2016, and the zinc oxide content is ≥99.7%, such as figure 1 As shown, it can be seen that the indirect method of zinc oxide is mostly rock sugar-like irregular square.

[0082] The nano-zinc oxide C used in the comparative formula 2-2 is: the above-mentioned nano-zinc oxide B with zinc hydroxide as a carrier is heat-treated at 150° C. for 2 hours, so that the zinc hydroxide is completely decomposed into zinc oxide, and the nano-zinc oxide C is obtained. .

[0083] formula:

[0084] Formula Components

Comparative formula 2-1

...

Embodiment 3-5

[0091] The indirect method zinc oxide used in the comparative formula 3 meets the requirements of the national standard GB / T3185-2016, and the zinc oxide content is ≥99.7%, such as figure 1 As shown, it can be seen that the indirect method of zinc oxide is mostly rock sugar-like irregular square.

[0092] Nano zinc oxide B in embodiment 3,4,5: take zinc hydroxide as the nano zinc oxide of carrier, specific surface area is 45m 2 / g, wherein the mass fraction of zinc oxide is 80.2%, and the mass fraction of zinc hydroxide is 19.5%, that is, the present invention uses nano-zinc oxide, such as image 3 .

[0093] formula:

[0094] Formula Components

Comparing formula 3

Example 3

Example 4

Example 5

bromobutyl rubber

80.0

80.0

90.0

70.0

natural rubber

20.0

20.0

10.0

30.0

N660 carbon black

64.0

58.0

55.0

45.0

N550 carbon black

8.0

13.0

20.0

leveling agent

...

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Abstract

The invention discloses a low zinc rubber composition which is characterized by comprising a rubber composition of at least one diene elastomer containing zinc, the zinc content is 0.5-1 phr, and phrmeans per hundred parts of rubber. The rubber composition is based on at least one filler system and a sulfur-based crosslinking system comprising high specific surface area nano zinc oxide supportedby zinc hydroxide particles as a vulcanization activator. An auxiliary system is further included. The vulcanization activator is characterized in that nano zinc oxide is evenly supported on the surfaces of the zinc hydroxide particles during the decomposition process of a precipitate, has high chemical activity and good dispersibility, and can ensure good performance of a product under reduced use and reduce the residual amount of zinc in rubber products. The rubber composition is applied to tire products to improve environmental performance and reduce zinc pollution caused by tires.

Description

technical field [0001] The invention belongs to the technical field of tire rubber production, and in particular relates to a low-zinc rubber composition. Background technique [0002] Zinc compounds, especially zinc oxide, are used in the production of almost all rubber products. The usual dosage is 2% of the total amount of rubber, which is approximately equivalent to 3-5phr zinc oxide. In the European Union, about 100,000 tons of zinc oxide and a small amount of other zinc compounds are used in the rubber industry every year, which accounts for about 40% of the total consumption of zinc oxide, while the annual consumption of zinc oxide in my country is about 180,000 to 300,000 tons . In the sulfur vulcanization system, zinc oxide is mainly used as an active agent. In addition, it can also be added to the peroxide vulcanization system, and can also be used as a crosslinking agent in rubber containing halogen and carboxyl groups. It can also be used as a white dye for lat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L9/00C08L91/00C08L7/00C08L23/28C08K13/02C08K3/36C08K3/04C08K5/09C08K3/22B60C1/00
CPCB60C1/00C08K2003/2296C08L9/00C08L9/06C08L23/283C08L2205/025C08L2205/035C08L91/00C08K13/02C08K3/36C08K3/04C08K5/09C08K3/22C08L7/00
Inventor 周天明李雯谢小红任衍峰杜红涛冯杰
Owner SAILUN GRP CO LTD
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