The rubber mixture

 

The invention relates to rubber mixtures and can be used in the manufacture of rubber products of mass assignment. The rubber mixture has the following composition, wt. hours : the best choice rubber 100, sulfur 1.8 to 2.2, altax of 1.5-1.7, diphenylguanidine of 0.8-1.0, zinc oxide 4,0-6,0, carbon 30,0-50,0, waste adsorption purification of petroleum oils, representing bentonite clay, impregnated with oil, in the amount of 30-70% 10,0-50,0. The technical result consists in increasing the plasticity of the mixture, the increase in hardness, resistance to ageing and reduce the residual elongation of rubber. table 2.

The invention relates to the rubber industry, in particular rubber compound, and can be used in the manufacture of rubber products of mass assignment.

Known rubber mixture comprising Zapolyarnoye rubber, resposibility rubber, sulfur, zinc oxide, sulfenamid C, stearic acid, carbon black, as a plasticizer 6-10% solution Zapolyarnoe rubber in otakuminopera distillation waste production (and.with. The USSR 1509368, CL 08 L 9/00, From 08 To 13/02 // (From 08 To 13/02, 3:04, 3: 06, 3:22, 5:09, 5:44), B. 35, 89, a).

However, the STN vulcanicola rubber compound based on unsaturated rubber, including carbon filler and chopped modified vulcanizer, passing through a sieve with a side of the cell 250 microns, pre-treated in the apparatus with a vortex layer within 60-300 derivative C-nitrosoanabasine amines of the formulawhere R= H, alkyl, aryl or aralkyl (and.with. The USSR 732314, CH208 L 9/00; 08 To 9/04, B., 17, 80,).

However, the known rubber has high enough strength and elongation at break.

Known vulcanicola rubber mixture on the basis of stereoregular diene rubber comprising crushed vulcanizer treated oligomer of General formulawhere m, n=10-100 with the content of epoxy groups 5-8 wt.% when the ratio of crushed vulcanizate and oligomer 100:(5-10).with. The USSR 836029, CL308 L 9/00, From 08 To 9/04, B. 21, 81 g).

However, this rubber does not have a sufficiently high resistance to heat aging and tensile strength.

Closest to the claimed is a rubber mixture containing the best choice rubber, sulfur, altax, diphenylguanidine, zinc oxide, stearic acid, carbon black and plasticizer, in which it contains oligomerization point from -2 to -9oWith and containing 15-20 wt.% chlorine (and.with. The USSR 1177312, CL 08 L 9/06, B. 33, 85 g).

However, the rubber from this mixture has a high residual elongation, low hardness and resistance to ageing.

Task offered the invention to provide rubber mixtures in which it is proposed to dispose of waste generated during the adsorption purification by bentonite clay oil refining, not currently in use, thereby to improve the environment, and, in addition, to replace expensive dispersing agents and fillers for rubber compounds.

The technical result is to increase the plasticity of the rubber, increasing the hardness and resistance of the rubber aging, the decrease of the residual elongation of rubber.

The technical result is achieved by the fact that the rubber mixture, comprising the best choice rubber, sulfur, altax, diphenylguanidine, zinc oxide, carbon black, as a dispersant and filler it contains waste adsorption purification of petroleum oils, representing bentonite clay, impregnated with oil in the amount of 30-70% in the following ratio of ingredients, wt.h.: The best choice rubber - 100,0 Sulfur - 1,8-2.2 Altex - 1,5-1,7 Diphenylguanidine - 0,8-establet a bentonite clay, soaked motor, torque, transmission, industrial, cylinder, process oils in amounts of from 30 to 70%.

It is known that bentonite is used as the adsorbent, has a high specific surface area, compared with the specific surface of the active fillers, and absorbed them oil may have dispersing properties. An attempt was made to replace partially the filler is carbon black expensive and scarce disperser - stearic acid on bentonite clay, oil-soaked.

The use of these wastes as reinforcing filler and dispersant can improve the plasticity of the mixture due to the presence in the waste bunch of oils that act as dispersers. The bentonite component of the specified waste due to the high adsorption activity increases hardness and reduces the residual elongation of the rubber.

Introduction in the mixture is from 10 to 50.0 wt.h these wastes increases the resistance of rubber aging as strength at break, and relative elongation.

The contents of the specified waste in the mixture is less than 10 wt.h. can not achieve a sufficient level of plasticity, uh who treats a sharp increase in plasticity, which affects the processing of the mixture. In addition, this reduction of the rubber component dramatically affects all the properties of rubber.

That is the best technical result can be achieved when the dosage specified waste in a mixture of 10.0 to 50.0 wt.h.

The proposed solution is illustrated by the following example.

Example.

A mixture was prepared by the conventional technology in the mill in the following sequence: rubber, diphenylguanidine, altax, zinc oxide, carbon black, these waste sulfur. Ingredients satisfy the requirements of: rubber is the best choice GOST 11138-76, diphenylguanidine THE 6-14-996-76, altax GOST 7087-75, zinc oxide GOST G 202-76, carbon black P 324 GOST 7885-77, sulfur GOST 127-76. The mixture was subjected to seasoning for 24 h, then was vulcanizable.

Vulcanization was carried out on the press with hydraulic drive and electric heating.

The tests were carried out by the relevant state Standards.

Tensile strength at break, stress at 300% elongation, elongation at break, the residual elongation after break GOST 270-75, the drag coefficients of thermal aging GOST 9024-74, the elastic rebound GOST 6950-73, plasticmodel in table.1 for examples 1-9.

The performance properties of the resulting rubber compounds are given in table.2.


Claims

The rubber mixture, comprising the best choice rubber, sulfur, altax, diphenylguanidine, zinc oxide, carbon black, a dispersant, characterized in that as a dispersant and filler it contains waste adsorption purification of petroleum oils, representing bentonite clay, impregnated with oil, in the amount of 30-70% in the following ratio of ingredients, wt.h.:
The best choice rubber - 100
Sulfur - 1,8-2,2
Altex - 1,5-1,7
Diphenylguanidine - 0,8-1,0
Zinc oxide - 4,0-6,0
Carbon - 30,0-50,0
These waste - 10,0-50,0 about

 

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