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Restored rubber produced hardwood sheet material and method for producing the same

A technology for reclaimed rubber and boards, applied in the field of production of hardwood boards, can solve the problems of affecting the uniformity of sulfur dispersion, reducing the quality of vulcanized rubber, poor rigidity, etc. Effect

Inactive Publication Date: 2008-05-07
浙江绿环橡木有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Generally, rubber products have excellent elasticity, but poor rigidity. As a structural material, the plate needs a certain rigidity, which requires rubber to have a high crosslinking density.
Increasing the amount of sulfur helps to increase the crosslinking density of rubber, but when ordinary raw rubber is used as raw material, sulfur spraying will occur as the amount of sulfur increases, which will affect the uniformity of sulfur dispersion in the rubber compound and reduce the quality of vulcanized rubber.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] To 100 parts by weight of reclaimed rubber, mix the following materials in a kneader at room temperature: 12 parts of sulfur, 0.6 part of dibenzothiazole disulfide, 0.6 part of tetramethylthiuram disulfide, 1 part of clay, 2 parts of zinc, 0.5 parts of stearic acid, 0.5 parts of N, N'-diphenyl-p-phenylenediamine, 0.8 parts of paraffin, after mixing all components evenly, and then kneading by a rubber mixer to obtain a rubber compound, kneading The glue is sent to a flat vulcanizer for molding and vulcanization, the vulcanization temperature is 160°C, the pressure is 25MPa, and the time is 35 minutes.

[0026] The prepared hardwood board has the following physical properties: the static bending strength is 62.7 MPa; the static bending elastic modulus is 7150 MPa.

Embodiment 2

[0028] To 100 parts by weight of reclaimed rubber, mix the following materials in a kneader at room temperature: 16 parts of sulfur, 1.2 parts of dibenzothiazole disulfide, 20 parts of clay, 2 parts of magnesium oxide, 0.8 parts of stearic acid, 2 parts , 0.8 parts of 2'-methylene bis(4-methyl-6-tert-phenol), 1.5 parts of oleic acid, after the components are mixed evenly, and then mixed by a rubber mixer to obtain a rubber compound, the rubber compound is sent to Put it into a flat vulcanizer for molding and vulcanization, the vulcanization temperature is 160°C, the pressure is 30MPa, and the time is 30 minutes.

[0029] The prepared hardwood board has the following physical properties: the static bending strength is 77.5 MPa; the static bending elastic modulus is 11550 MPa.

Embodiment 3

[0031] To 100 parts by weight of reclaimed rubber, mix the following materials in a kneader at room temperature: 12 parts of sulfur, 0.6 parts of dibenzothiazole disulfide, 0.8 parts of diphenylguanidine, 40 parts of barium sulfate, 3 parts of zinc oxide, 1.2 parts of stearic acid, 0.5 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, and 2.0 parts of pine tar oil. After mixing the components evenly, they are mixed by a rubber mixer to obtain a compound The rubber is mixed, and the mixed rubber is sent to a flat vulcanizer for molding and vulcanization. The vulcanization temperature is 160 ° C, the pressure is 35 MPa, and the time is 35 minutes.

[0032] The prepared hardwood board has the following physical properties: the static bending strength is 43.7 MPa; the static bending elastic modulus is 3560 MPa.

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PUM

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Abstract

The invention discloses a hard wood board produced by using reclaimed rubber and a preparation method thereof. The hard wood board has the preparation method that the wasted rubber product is desulfurized to produce the reclaimed rubber, and then a kneader is used to make 100 parts weight of reclaimed rubber, 10 to 20 parts of curing agent, 0.3 to 5 parts of curing accelerator, 0.1 to 10 parts of activating agent, 1 to 80 parts of bulk additive, 0.1 to 1.5 parts of anti-aging agent, and 0.1 to 5 parts of plasticizer according to the weight part mixed evenly, then the evenly mixed materials are put to the vulcanizing paste press for pressing and shaping as well as sulfurization, the sulfurization temperature is 140 to 180 DEG C, the pressure is 20 to 40 MPa, and the time is 20 to 60 minutes, finally the required hard wood board is prepared. The hard wood board of the invention has very high static bending intensity and modulus, and can be used as structure material instead of the traditional hard wood, and the hard wood board also has good anti-aging property and long service life.

Description

technical field [0001] The invention belongs to a preparation method for producing hardwood boards, in particular to a preparation method for producing hardwood boards with reclaimed rubber. Background technique [0002] Insufficient natural wood resources have become a worldwide problem, and my country is a country with extremely poor wood resources. Therefore, finding new wood substitutes and creating a "second forest" have become urgent problems to be solved. [0003] On the other hand, with the wide application of rubber and plastic products, a large amount of rubber and plastic waste is produced every year, such as only waste rubber tires can produce about 5 million pieces every day in the world. Insufficient comprehensive utilization of waste not only causes huge waste, but also causes excessive deforestation, which leads to a series of social and ecological problems. [0004] In the above background, the development and industrial production of wood-plastic composite...

Claims

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Application Information

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IPC IPC(8): C08L17/00C08K5/47C08J5/18C08K5/40C08K3/00
Inventor 马荣夫申屠宝卿沈露森翁志学濮水根
Owner 浙江绿环橡木有限公司
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