Method for preparing rubber protective cover of expressway guardrail

Abstract

A method for preparing a rubber protective cover of an expressway guardrail includes steps of: (S1), preparing material, wherein the material includes high-temperature vulcanized rubber, nanometer zinc oxide, nanometer silicon dioxide and a modifier; (S2), placing the vulcanized rubber into a mixing furnace which is able to increase a temperature, and then heating to 200 C.; (S3), adding the nanometer zinc oxide, and then stirring for 10 minutes; (S4), adding the nanometer silicon dioxide, and then stirring for 5 minutes; (S5), adding the modifier, and then stirring for 30 minutes; and (S6), adding the rubber after stirring into a four-roll calender, shaping, and preparing the rubber cover having a thickness of 10-20 mm and a length of 300-600 mm. The present invention has a low cost, a corrosion resistance, an easy preparation process, a low equipment requirement and a strong operability.

Claims

1. A method for preparing a rubber protective cover of an expressway guardrail comprises steps of: (S1), preparing material, wherein: the material comprises high-temperature vulcanized rubber, nanometer zinc oxide, nanometer silicon dioxide and a modifier in a weight ratio of (90-100):(0.05-0.2):(1-1.5):(0.1-0.8); (S2), placing the vulcanized rubber into a mixing furnace which is able to increase a temperature, and then heating; (S3), adding the nanometer zinc oxide, and then stirring; (S4), adding the nanometer silicon dioxide, and then stirring; (S5), adding the modifier, and then stirring; and (S6), adding the rubber after stirring into a four-roll calender, shaping, and preparing the rubber cover.

2. The method for preparing the rubber protective cover of the expressway guardrail, as recited in claim 1, wherein the weight ratio of the vulcanized rubber, the nanometer zinc oxide, the nanometer silicon dioxide and the modifier is 98:0.1:1.3:0.6.

3. The method for preparing the rubber protective cover of the expressway guardrail, as recited in claim 1, wherein: in the step of S2, the vulcanized rubber is heated to 200 C.

4. The method for preparing the rubber protective cover of the expressway guardrail, as recited in claim 1, wherein: in the step of S3, a stirring time is 8-12 minutes.

5. The method for preparing the rubber protective cover of the expressway guardrail, as recited in claim 1, wherein: in the step of S4, a stirring time is 4-6 minutes.

6. The method for preparing the rubber protective cover of the expressway guardrail, as recited in claim 1, wherein: in the step of S5, a stirring time is 25-35 minutes.

7. The method for preparing the rubber protective cover of the expressway guardrail, as recited in claim 1, wherein the rubber cover has a thickness of 10-20 mm and a length of 300-600 mm.

8. The method for preparing the rubber protective cover of the expressway guardrail, as recited in claim 1, wherein: the vulcanized rubber comprises components of rubber raw material, alkali-free glass fiber powders, sulfur, vulcanization accelerator, phenolic resin powders and carbon black in a weight ratio of 78:10:6:1:2:1.

9. The method for preparing the rubber protective cover of the expressway guardrail, as recited in claim 8, wherein the alkali-free glass fiber powders have a particle size of 800 meshes.

10. The method for preparing the rubber protective cover of the expressway guardrail, as recited in claim 8, wherein the carbon black is hard carbon black.

Description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0022] A method for preparing a rubber protective cover of an expressway guardrail comprises steps of:

[0023] (S1), preparing material, wherein: the material comprises high-temperature vulcanized rubber, nanometer zinc oxide, nanometer silicon dioxide and a modifier; and weights of the vulcanized rubber, the nanometer zinc oxide, the nanometer silicon dioxide and the modifier are respectively 98 kilograms, 0.1 kilogram, 1.3 kilograms and 0.6 kilograms;

[0024] (S2), placing the vulcanized rubber into a mixing furnace which is able to increase a temperature, and then heating to 200 C.;

[0025] (S3), adding the nanometer zinc oxide, and then stirring for 10 minutes;

[0026] (S4), adding the nanometer silicon dioxide, and then stirring for 5 minutes;

[0027] (S5), adding the modifier, and then stirring for 30 minutes; and

[0028] (S6), adding the rubber after stirring into a four-roll calender, shaping, and preparing the rubber cover having a thickness of 10-20 mm and a length of 300-600 mm.

[0029] The vulcanized rubber comprises components of: 78 kilograms of rubber raw material; 10 kilograms of alkali-free glass fiber powders; 6 kilograms of sulfur; 1 kilogram of vulcanization accelerator; 2 kilograms of phenolic resin powders; and 1 kilogram of carbon black.