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A kind of preparation method of dicyclopentadiene petroleum resin modified rubber

A technology of dicyclopentadiene and petroleum resin, applied in the field of rubber materials, can solve the problem of increasing energy consumption in the mixing process, difficulty in controlling the uniformity of the dispersion of the dicyclopentadiene petroleum resin, and difficulty in fusing the raw rubber with the dicyclopentadiene petroleum resin. and other problems, to achieve the effects of good mechanical properties, low processing energy consumption, and uniform dispersion.

Active Publication Date: 2014-10-29
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the process of using the method to prepare modified rubber, dicyclopentadiene petroleum resin is added in the mixing process, and the fusion of raw rubber and dicyclopentadiene petroleum resin is difficult. In order to make raw rubber and dicyclopentadiene petroleum resin Full fusion requires increased energy consumption in the mixing process, and it is difficult to control the uniformity of the dispersion of dicyclopentadiene petroleum resin in the rubber matrix

Method used

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  • A kind of preparation method of dicyclopentadiene petroleum resin modified rubber
  • A kind of preparation method of dicyclopentadiene petroleum resin modified rubber
  • A kind of preparation method of dicyclopentadiene petroleum resin modified rubber

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[0019] The embodiment of the present invention discloses a kind of preparation method of dicyclopentadiene petroleum resin modified rubber, comprising the following steps:

[0020] Mix rubber latex, dicyclopentadiene petroleum resin and compounding agents in an organic solvent, coagulate, extrude and dry to obtain modified raw rubber; the compounding agents are sulfur, dicumyl peroxide (DCP), N, N-tetramethyldithiobisthiocarbamide (TMTD), 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane, azobisisobutyronitrile (AIBN) or Dibenzoyl Oxide (BPO);

[0021] The modified raw rubber is mixed with stearic acid, zinc oxide, sulfur, a vulcanization accelerator and carbon black, and the dicyclopentadiene petroleum resin modified rubber is obtained after tableting and vulcanization.

[0022] The invention uses rubber latex, dicyclopentadiene petroleum resin and compounding agent as raw materials, fully mixes the three in an organic solvent, and then dries to obtain modified raw rubber.

[00...

Embodiment 1

[0034] Mix 100 kg of butadiene rubber BR9000, 5 kg of dicyclopentadiene homopolymer resin with a softening point of 105°C and 1 kg of sulfur in n-hexane. After stirring evenly, the rubber liquid is condensed in water at 95°C. The volume ratio of glue to water is 1:10, and then extruded through a twin-screw extruder at an extrusion temperature of 90°C, a rotation speed of 60 rpm, and an extrusion time of 10 minutes to obtain modified raw rubber.

[0035] 200 grams of modified raw rubber, 4 grams of stearic acid, 6 grams of zinc oxide, 1.8 grams of N-cyclohexyl-2-benzothiazole sulfenamide (CZ), 3.0 grams of sulfur, 120 grams of carbon black, according to GB / T8660-2008 disclosed method for mixing. Put the kneaded rubber into a mold preheated to 145°C, keep constant pressure and temperature after repeated exhausting by a flat vulcanizer, and vulcanize for 30 minutes to obtain dicyclopentadiene petroleum resin modified rubber.

[0036] The mechanical properties of the obtained mo...

Embodiment 2

[0038] Mix 100 kg of butadiene rubber BR9000, 50 kg of dicyclopentadiene homopolymer resin with a softening point of 120°C and 8 kg of sulfur in n-hexane, and after stirring evenly, coagulate the rubber liquid in water at 100°C. The volume ratio of glue to water is 1:10, and then extruded through a twin-screw extruder at an extrusion temperature of 70°C, a rotation speed of 60 rpm, and an extrusion time of 10 minutes to obtain modified raw rubber.

[0039] 200 grams of modified raw rubber, 4 grams of stearic acid, 6 grams of zinc oxide, 1.8 grams of N-cyclohexyl-2-benzothiazole sulfenamide (CZ), 3.0 grams of sulfur, 120 grams of carbon black, according to GB / T8660-2008 disclosed method for mixing. Put the kneaded rubber into a mold preheated to 145°C, keep constant pressure and temperature after repeated exhausting by a flat vulcanizer, and vulcanize for 30 minutes to obtain dicyclopentadiene petroleum resin modified rubber.

[0040] The mechanical properties of the obtained m...

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Abstract

The invention provides a method for preparing dicyclopentadiene petroleum resin modified rubber. The method comprises the steps as follows: mixing rubber latex, dicyclopentadiene petroleum resin and a compounding ingredient in an organic solvent, coagulating, extruding and drying to obtain modified crude rubber; and compounding the modified crude rubber with stearic acid, zinc oxide, sulfur, vulcanization accelerator and carbon black, performing and vulcanizing to obtain the dicyclopentadiene petroleum resin modified rubber. As the rubber latex, the dicyclopentadiene petroleum resin and the compounding ingredient are uniformly mixed in the organic solvent and fused fully to obtain the modified crude rubber with no need to consume energy and the modified rubber can be obtained by compounding the modified crude rubber, performing and vulcanizing, so that the mixing of the crude rubber with dicyclopentadiene during the compounding process is avoided and the processing energy consumption is small. In addition, the dicyclopentadiene petroleum resin is dispersed in a rubber matrix uniformly in the obtained modified rubber, so the physical and mechanical properties are good.

Description

technical field [0001] The invention relates to the field of rubber materials, in particular to a preparation method of dicyclopentadiene petroleum resin modified rubber. Background technique [0002] Natural rubber is a renewable natural resource with superior comprehensive properties, and its main component is polyisoprene. However, with the development of the synthetic rubber industry, some synthetic rubber (SR) with special properties shows greater advantages than natural rubber. For example, in heat-resistant products, sealing products, and oil-resistant products, natural rubber is obviously inferior to butadiene rubber. Nitrile rubber (NBR), butyl rubber (IIR) and other synthetic rubber. In order to overcome the shortcomings of its performance, it is necessary to carry out physical modification or chemical modification based on the chemical structure of raw rubber. [0003] Dicyclopentadiene is a light yellow transparent liquid, mainly derived from petroleum C5 fract...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/00C08L9/06C08L9/02C08L23/16C08L57/02C08K13/02C08K3/06C08K5/14C08K5/40C08K5/315C08K5/09C08K3/22C08K3/04
Inventor 于琦周张学全赵鹏飞刘海燕王胜伟王建伟
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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