Method for preparing rubber by using oil shale semi-coke-based mineral/biochar material as reinforcing aid

A technology of oil shale semi-coke and reinforcing additives, which is applied in the fields of solid waste resource utilization and rubber deep processing. High-value utilization and other issues to achieve high elongation at break, excellent mechanical properties, and stable supply

Active Publication Date: 2021-11-05
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the organic matter in oil shale semi-coke accounts for 20% to 40% (mostly polycyclic aromatic hydrocarbons and phenolic organic matter), and the organic matter will be evenly distributed on the surface of mineral sheets or in the stacking gaps, resulting in oil shale semi-coke. The specific surface area of ​​coke is small and the number of stacked pores is small. It is not conducive to mixing to form a crosslinked network structure when directly used as a rubber additive; Low, only realizes filling function, does not realize high-value utilization
Therefore, when oil shale semi-coke is used as a rubber reinforcing agent, the presence of heavy metal ions and variable-valence metal ions will reduce the mechanical properties and anti-aging properties of rubber products, and there are problems such as how to efficiently and comprehensively utilize mineral and organic resources in it.

Method used

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  • Method for preparing rubber by using oil shale semi-coke-based mineral/biochar material as reinforcing aid
  • Method for preparing rubber by using oil shale semi-coke-based mineral/biochar material as reinforcing aid
  • Method for preparing rubber by using oil shale semi-coke-based mineral/biochar material as reinforcing aid

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Acid etching of oil shale semi-coke: Weigh 500g of oil shale semi-coke powder (broken, <200 mesh), disperse into 2.5L, 2M hydrochloric acid solution, stir and react at 90°C for 6h, centrifuge 1. Washing with deionized water for 3 times, press filtering and drying to obtain acid-etched oil shale semi-coke;

[0032] (2) Preparation of rubber products: Add 100 parts of styrene-butadiene rubber raw rubber (parts by mass, the same below) into the mixer and plasticize for 10 minutes, then add 4 parts of zinc oxide, 2 parts of stearic acid, accelerator ( ZDMC) 3 parts, silane coupling agent Si-69 3.5 parts, acid-etched oil shale semi-coke 10 parts, white carbon black 40 parts and sulfur 3 parts, mixed at 60°C for 0.5h, and adjusted the roller during the mixing process Cut the knife several times to get the rubber compound; then put the rubber compound into the flat vulcanizing machine after 12 hours, and vulcanize it at 17Mpa and 160°C for 0.5 hour to get the rubber produc...

Embodiment 2

[0034] (1) Preparation of oil shale semi-coke-based mineral / biochar materials: Weigh 500g of oil shale semi-coke powder, disperse into 5L, 0.5M hydrochloric acid solution, stir and react at 90°C for 6h, centrifuge, remove Wash 3 times with ion water and press filter to obtain acid-etched oil shale semi-coke; then add acid-etched oil shale semi-coke into the rotary kiln, and calcine for 2 hours at 700°C under the protection of argon atmosphere to obtain oil shale semi-coke-based minerals / biochar material;

[0035] (2) Preparation of rubber products: Add 100 parts of styrene-butadiene rubber raw rubber into the mixer and plasticize for 10 minutes, then add 3 parts of zinc oxide, 2 parts of stearic acid, 3 parts of accelerator (TBBS), silane coupling 2 parts of Si-69 agent, 5 parts of oil shale semi-coke-based mineral / biochar material, 45 parts of white carbon black and 2 parts of sulfur were mixed at 55°C for 0.5h, and the roller distance was adjusted several times during the ...

Embodiment 3

[0037] (1) Preparation of oil shale semi-coke-based mineral / biochar materials: Weigh 500g oil shale semi-coke powder, disperse into 5L, 1M sulfuric acid solution, stir and react at 90°C for 4h, centrifuge, deionize Washing with water for 3 times and press-filtering to obtain acid-etched oil shale semi-coke; then adding acid-etched oil shale semi-coke into the cracking furnace, and calcining at 800°C for 2 hours under the protection of helium atmosphere to obtain oil shale semi-coke-based minerals / biochar material;

[0038] (2) Preparation of rubber products: Add 100 parts of styrene-butadiene rubber raw rubber into the mixer and plasticize for 10 minutes, then add 3.5 parts of zinc oxide, 2 parts of stearic acid, 3 parts of accelerator (TMTD), silane coupling 3 parts of agent Si-69, 5 parts of oil shale semi-coke-based mineral / biochar material, 45 parts of white carbon black and 2 parts of sulfur were mixed at 60°C for 0.5h, and the roller distance was adjusted several times ...

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Abstract

The invention discloses a method for preparing rubber by using an oil shale semi-coke-based mineral / biochar material as a reinforcing aid, which comprises the following steps: adding raw rubber into a mixing mill for plasticizing, sequentially adding zinc oxide, stearic acid, an accelerant, a silane coupling agent, the oil shale semi-coke-based mineral / biochar material, white carbon black and sulfur according to a preferable proportion, and mixing to obtain a rubber compound; and placing the rubber compound, and vulcanizing to obtain a rubber product, wherein the oil shale semi-coke-based mineral / charcoal material is obtained by carrying out acid etching on the oil shale semi-coke and calcining in an oxygen-deficient or low-oxygen environment. According to the invention, the oil shale semi-coke-based mineral / biochar material obtained after acid etching and carbonization is used as a reinforcing auxiliary agent to prepare a rubber product with excellent performance, and the method has the advantages of advanced technology, controllable cost and the like, and can realize dual benefits of solid waste resource utilization and environmental protection.

Description

technical field [0001] The invention relates to a method for preparing rubber, in particular to a method for preparing rubber by using oil shale semi-coke-based mineral / biochar material as a reinforcing auxiliary agent, and belongs to the technical fields of solid waste resource utilization and rubber deep processing. Background technique [0002] Oil shale is a sedimentary rock that is often associated with coal and extracted together. It contains kerogen, minerals and water. It is widely used in refining shale oil, burning power generation and synthesizing building materials. Oil shale semi-coke is the main solid waste produced when oil shale is extracted from shale oil by low-temperature dry distillation, which contains a large amount of minerals and organic matter. At present, the common disposal method of oil shale semi-coke is stockpiling or landfilling, which will occupy a large amount of land and destroy the ecological landscape, and the leachate produced by rainwate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/02C08K9/00C08K3/36C08K3/22C08K3/04C08L9/06
CPCC08K9/02C08K9/00C08K3/36C08K3/22C08K3/04C08K2003/2227C08K2003/222C08K2003/2206C08K2003/2272C08L9/06
Inventor 王爱勤许江牟斌朱永峰康玉茹
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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