KR100544791B1 - Use of The Rubber Compound for Anti-Sticking Cover Rubber Conveyor Belt - Google Patents

Abstract

The present invention relates to a conveyor belt cover rubber composition for preventing adhesion

10 to 70 parts by weight of the filler with respect to 100 parts by weight of the rubber compound; 0.5 to 2 parts by weight of stearic acid; 3 to 10 parts by weight of zinc oxide; 1 to 10 parts by weight of the fatty acid amide compound; 1.0 to 60 parts by weight of process oil; 0.5 to 5 parts by weight of anti-aging agent; 0.1 to 10 parts by weight of sulfur; And 0.1 to 10 parts by weight of a vulcanization accelerator; comprising an anti-adhesive conveyor belt cover rubber composition and an anti-adhesive conveyor belt manufactured using the above-mentioned conveyor belt cover rubber composition, comprising: Conveyor belt cover rubber composition for preventing adhesion by preventing the package from adhering to the surface of the conveyor belt to improve the wear resistance of the conveyor belt to maintain a long life and at the same time has the effect of reducing energy and environmental pollution.

Fatty acid amide compound, wear resistance, conveyor belt cover rubber, rubber compound, filler, stearic acid, zinc oxide, process oil, antioxidant, sulfur, vulcanization accelerator

Description

Use of The Rubber Compound for Anti-Sticking Cover Rubber Conveyor Belt}

The present invention relates to an anti-adhesion conveyor belt cover rubber composition having an excellent anti-adhesion function. More specifically, a conveyor belt manufactured using a conveyor belt cover rubber composition in which a fatty acid amide compound is added to a rubber compound prevents environmental pollution due to dust generation between packages during line operation, and improves transport efficiency and energy efficiency. An anti-adhesion conveyor belt cover rubber composition for improving rubber wear.

The cover rubber of the conventional conveyor belt has a lot of adsorption on the rubber surface depending on the type of package, so hard cakes are formed by the transport material, which leads to premature wear and transportation efficiency. However, there was a problem of causing air pollution scattered by the external environment. In particular, in the surrounding areas of steel mills and cement companies, air pollution is serious due to dust of raw materials transferred from conveyor lines.

In addition, since a motor is used for line operation in a company using a conveyor line, there is a problem that generally does not take into consideration the power cost reduction of the belt due to line operation.

In addition, factors affecting the life of the belt during use of the belt are classified into cover rubber wear caused by normal use and accidents. In most cases, belt life is determined by the wear of cover rubber.

In order to solve the above problems, the present invention, by using a conveyor belt cover rubber composition to which a fatty acid amide compound is added to the rubber compound, the conveyor belt is easily installed in the conveyor line to improve the adhesion of the package and wear resistance It is an object of the present invention to provide an anti-adhesive conveyor belt cover rubber composition with improved transport efficiency, environmental pollution, energy cost and service life.

It is also an object of the present invention to provide an anti-adhesion conveyor belt manufactured using the anti-adhesion conveyor belt cover rubber composition.

The above and other objects of the present invention can be achieved by the present invention described below.

In order to achieve the above object, the present invention, with respect to 100 parts by weight of the rubber compound, 10 to 70 parts by weight of the filler; 0.5 to 2 parts by weight of stearic acid; 3 to 10 parts by weight of zinc oxide; 1 to 10 parts by weight of the fatty acid amide compound; 1.0 to 60 parts by weight of process oil; 0.5 to 5 parts by weight of anti-aging agent; 0.1 to 10 parts by weight of sulfur; And 0.1 to 10 parts by weight of a vulcanization accelerator; provides an anti-adhesion conveyor belt cover rubber composition comprising a.

The process oil may be an aromatic oil.

The anti-aging agent may be a single or a mixture of two or more selected from the group consisting of d-phenylamine-based, p-phenylene-based and diamine-based.

The rubber compound may be at least one selected from the group consisting of natural rubber, styrene-butadiene copolymer rubber (SBR) and butadiene rubber (BR).

The rubber compound may include 5 to 50 parts by weight of styrene-butadiene copolymer rubber (SBR) or 5 to 50 parts by weight of butadiene rubber (BR) based on 100 parts by weight of natural rubber.

The filler may be at least one selected from the group consisting of carbon black, hard coal, bicarbonate, clay, talc and silica.

The vulcanization accelerator may be selected from the group consisting of sulfenamide-based, thiazole-based and mixtures thereof.

The present invention also provides a conveyor belt manufactured using the anti-adhesive conveyor belt cover rubber composition.

Hereinafter, the present invention will be described in detail.

10 to 70 parts by weight of the filler with respect to 100 parts by weight of the rubber compound; 0.5 to 2 parts by weight of stearic acid; 3 to 10 parts by weight of zinc oxide; 1 to 10 parts by weight of the fatty acid amide compound; 1.0 to 60 parts by weight of process oil; 0.5 to 5 parts by weight of anti-aging agent; 0.1 to 10 parts by weight of sulfur; And 0.1 to 10 parts by weight of a vulcanization accelerator; provides an anti-adhesion conveyor belt cover rubber composition comprising a.

The anti-adhesive conveyor belt cover rubber composition may use 100 parts by weight of at least one rubber compound selected from the group consisting of natural rubber, styrene-butadiene copolymer rubber (SBR), butadiene rubber (BR), etc. As a whole, the content of other components decreases, which may result in property degradation.

The rubber compound may include 5 to 50 parts by weight of styrene-butadiene copolymer rubber (SBR) or 5 to 50 parts by weight of butadiene rubber (BR) based on 100 parts by weight of natural rubber, Mixing 5 to 50 parts by weight of styrene-butadiene copolymer rubber (SBR) with natural rubber provides excellent heat and wear resistance during the use of the conveyor belt, and mixing 5 to 50 parts by weight of butadiene rubber (BR) to wear resistance during the use of the conveyor belt. To be excellent.

The filler may be at least one selected from the group consisting of carbon black, hard coal, bicarbonate, clay, talc, silica and the like. In addition, carbon black is excluded from color blending. The filler is a substance added for the purpose of anti-aging, reinforcement and increase in the practical use of rubber or plastic, for example, carbon added to the filler in order to obtain strength required for manufacturing automobile tires from rubber. Corresponding.

The filler may be used in 10 to 70 parts by weight with respect to 100 parts by weight of the rubber compound, if less than 10 parts by weight may be unable to obtain the required strength, if it exceeds 70 parts by weight is not properly formed, processed, etc. There may be a problem.

The stearic acid forms metal complexes and metal soaps with metal oxides such as zinc oxide and the like to increase compatibility with rubber and facilitate activation of the vulcanization accelerator.

The stearic acid may be used in an amount of 0.5 to 2 parts by weight with respect to 100 parts by weight of the rubber compound, and when less than 0.5 parts by weight, the amount of formation of the metal complex compound may be small, which may reduce the activity of the vulcanization accelerator. Although excessively formed, the activation of the vulcanization accelerator is increased and the viscosity is lowered, so that the processability is increased.

The zinc oxide forms a metal complex compound or a metal soap with a fatty acid such as stearic acid, thereby increasing compatibility with rubber and facilitating activation of the vulcanization accelerator.

The zinc oxide may be used in an amount of 3 to 10 parts by weight based on 100 parts by weight of the rubber compound, and when less than 3 parts by weight, there is a problem in that the amount of formation of the metal complex is small, which lowers the vulcanization accelerator activation. This excess is formed to increase the vulcanization accelerator activation and lower the viscosity to increase the workability, but may lower the physical properties such as tensile strength, sintered resistance, wear resistance.

The process oil is used to increase processability when mixing and molding compounding materials. Preferably, aromatic oils that can be purchased and used commercially can be used by those skilled in the art. For example, aromatic oil A- # 2 of Michang Petrochemical Co., Ltd., South Korea may be used.

The process oil is 1.0 based on 100 parts by weight of the rubber compound. It may be used in the range of 60 to 60 parts by weight, when less than 1.0 part by weight may have a problem that the processability of the composition is lowered to facilitate the manufacture of the processed product of a beautiful appearance, when exceeding 60 parts by weight there is too much oil in the processed product There may be problems such as surface contamination.

Specifically, the antioxidant may be used alone or a mixture of two or more selected from the group consisting of d-phenylamine, p-phenylene, diamine.

The anti-aging agent is based on 100 parts by weight of the rubber compound It can be used in 0.5 to 5 parts by weight, less than 0.5 parts by weight may cause the aging of the workpiece quickly or cause surface cracks due to ozone and shorten the life, if exceeding 5 parts by weight tensile strength and wear resistance There may be a problem that lowers.

The fatty acid amide compound is a compound prepared by synthesizing a fatty acid and an amine compound, and serves to prevent the adsorption of the package by smoothing the surface of the workpiece while ejecting from the rubber. For example, as the fatty acid amide, Armoslip # CP, which is a trade name of Akzo, a Danish chemical company, may be used.

The fatty acid amide compound may be used in an amount of 1 to 10 parts by weight based on 100 parts by weight of a rubber compound, and when used in an amount less than 1 part by weight, adsorption of fine carriers may occur, which may cause a problem that a cake is formed on the surface. If the part is exceeded, there may be a problem that causes physical properties such as hardness, tensile strength, aging.

Sulfur and a vulcanization accelerator can be used as the crosslinking agent, and sulfenamide-based, thiazole-based accelerators and the like are preferably used as the vulcanization accelerator. The sulfenamide-based and thiazole-based accelerators may be used in combination of two or more, and the sulfenamide-based accelerator, the thiazole-based accelerator, and other accelerators may be used in combination.

The sulfur may be used in the range of 0.1 to 10 parts by weight based on 100 parts by weight of the rubber compound, and the vulcanization accelerator is based on 100 parts by weight of the rubber compound. It may be used in the range of 0.1 to 10 parts by weight. Departing from the lower limit of the above range may have a problem that the crosslinking does not occur sufficiently, and out of the upper limit of the range indicates too hard physical properties due to excessive crosslinking of the composition obtained by crosslinking occurs too much, unreacted sulfur or accelerator There may be a problem that adversely affects the physical properties due to the residual.

In addition, the present invention provides an anti-adhesion conveyor belt manufactured using the anti-adhesion conveyor belt cover rubber composition. The anti-adhesion conveyor belt may be manufactured in a conveyor belt having a different shape, such as a steel conveyor belt, a pipe conveyor belt, a corrugated hump conveyor belt, a cable conveyor belt.

Hereinafter, the present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited to the examples.

Example 1

100 parts by weight of natural rubber as a rubber compound, 5 parts by weight of zinc oxide, 1 part by weight of stearic acid, 50 parts by weight of HAA (High Abrasion Furnace) as carbon black, 5.5 parts by weight of process oil, 2 parts by weight of anti-aging agent , 2 parts by weight of fatty acid amide compound, 2 parts by weight of sulfur and 1.2 parts by weight of dibenzothiazyl disulfide (MBTS), which is a thiazole-based vulcanization accelerator, were mixed to prepare a conveyor belt cover rubber composition.

Example 2

Conveyor belt cover rubber composition was prepared by mixing in the same manner as in Example 1 except that 4 parts by weight instead of 2 parts by weight of the fatty acid amide compound was applied.

Example 3

In the same manner as in Example 1, except that 80 parts by weight of natural rubber, 20 parts by weight of styrene-butadiene copolymer rubber (SBR) instead of 100 parts by weight of natural rubber, and 8 parts by weight instead of 2 parts by weight of fatty acid amide compound were applied as a rubber compound. Mixing to prepare a conveyor belt cover rubber composition.

Example 4

In the same manner as in Example 1, except that 70 parts by weight of natural rubber, 30 parts by weight of styrene-butadiene copolymer rubber (SBR) and 8 parts by weight of fatty acid amide compound were used instead of 100 parts by weight of the rubber compound. Mixing to prepare a conveyor belt cover rubber composition.

Example 5

In the same manner as in Example 1 except that 80 parts by weight of natural rubber, 20 parts by weight of styrene-butadiene copolymer rubber (SBR) and 10 parts by weight instead of 2 parts by weight of the fatty acid amide compound were used as the rubber compound. Mixing to prepare a conveyor belt cover rubber composition.

Comparative Example 1

Instead of 100 parts by weight of natural rubber as a rubber compound, 80 parts by weight of natural rubber and 20 parts by weight of styrene-butadiene copolymer rubber (SBR) are applied, except that 2 parts by weight of fatty acid amide compound is mixed in the same manner as in Example 1, and the cover belt rubber The composition was prepared.

[Test Example 1]

Using a cake-free conveyor belt made of the compositions of Examples 1 to 5 and Comparative Example 1, the change in wear was measured according to the KS M 6534 conveyor belt wear test method, and the physical property measurement results are summarized in Table 1 below. It was.

TABLE 1

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Wear 150 110 90 80 80 160

[Test Example 2]

The wear resistance and the package adhesion amount of the conventional conveyor belt and the cake-free conveyor belt manufactured according to Example 5 were compared, and the measurement results of the physical properties are summarized in Tables 2 and 3 below.

TABLE 2

Wear resistance comparison

division Conventional Conveyor Belt Cake Free Conveyor Belt KS-S 200 150 KS-A 150 100 HAR (High Abrasion Resistant) 120 80 SAR (High Abrasion Resistant) 80 50

TABLE 3

Comparison of Belt Surface Amount

division Conventional Conveyor Belt Cake Free Conveyor Belt Foundry sand (water content 7%) 100 90 Powdered coal (water content 10-15%) 100 80 Limestone (5% moisture) 100 70

As can be seen in Table 1 and Table 2, the wear amount for the wear resistance was reduced in comparison with the existing conveyor belt and Comparative Example 1 since the wear amount of the wear bare belt cover rubber composition was found to be excellent. As can be seen in Table 3 above, the amount of the package attached to the package was also reduced compared to the existing conveyor belt.

As described above, the conveyor belt manufactured using the anti-adhesive conveyor belt cover rubber composition according to the present invention prevents cake formation on the belt surface due to adsorption of the package during use, thereby increasing the transportation efficiency and generating the package. It can reduce the air pollution by dust of the returning part, and reduce the energy cost by minimizing the friction between the belt and the carrier roller during the conveyor line operation. It is a useful invention that has the effect of extending the life of the belt by reducing.

While the invention has been described in detail with reference to the specific examples described, it will be apparent to those skilled in the art that various modifications and variations are possible within the scope and spirit of the invention, and such modifications and variations fall within the scope of the appended claims. It is also natural.

Claims (8)

Per 100 parts by weight of a rubber compound, 10 to 70 parts by weight of the filler; 0.5 to 2 parts by weight of stearic acid; 3 to 10 parts by weight of zinc oxide; 1 to 10 parts by weight of the fatty acid amide compound; 1.0 to 60 parts by weight of process oil; 0.5 to 5 parts by weight of anti-aging agent; 0.1 to 10 parts by weight of sulfur; And 0.1 to 10 parts by weight of a vulcanization accelerator; Anti-adhesive conveyor belt cover rubber composition characterized in that it comprises a. The method of claim 1, The process oil is an anti-adhesion conveyor belt cover rubber composition, characterized in that the aromatic oil. The method of claim 1, The anti-aging agent is an anti-adhesive conveyor belt cover rubber composition, characterized in that the single or a mixture of two or more selected from the group consisting of d-phenylamine-based, p-phenylene-based and diamine-based. The method of claim 1, The rubber compound is an anti-adhesive conveyor belt cover rubber composition, characterized in that at least one selected from the group consisting of natural rubber, styrene-butadiene copolymer rubber (SBR) and butadiene rubber (BR). The method of claim 1, The rubber compound is based on 100 parts by weight of natural rubber, 5 to 50 parts by weight of styrene-butadiene copolymer rubber (SBR); or Butadiene rubber (BR) 5 to 50 parts by weight; Anti-adhesion conveyor belt cover rubber composition comprising a. The method of claim 1, The filler is an anti-adhesive conveyor belt cover rubber composition, characterized in that at least one selected from the group consisting of carbon black, hard coal, bicarbonate, clay, talc and silica. The method of claim 1, Wherein the vulcanization accelerator is selected from the group consisting of sulfenamide-based, thiazole-based and mixtures thereof. An anti-adhesion conveyor belt manufactured using the conveyor belt cover rubber composition of claim 1.