Heat-resistant basalt impregnated canvas

Abstract

The utility model discloses heat-resistant basalt gum dipping canvas, and belongs to the technical field of canvas manufacturing. The gum dipping canvas comprises a canvas fabric and a glue solution coating covering the upper and lower surfaces of the canvas fabric, the canvas fabric comprises first weft yarns, second weft yarns and third weft yarns which are sequentially arranged from top to bottom, the second weft yarns are interwoven with warp yarns, the woven warp yarns vertically shuttle the upper and lower surfaces of the canvas, the first weft yarns are basalt fibers, the second weft yarns are polyester or nylon fibers, and the third weft yarns are polyester or nylon fibers. The third weft yarns are polyester or nylon fibers, the weaving warp yarns are basalt fibers, and the warp yarns are polyester or nylon fibers. According to the canvas structure, polyester or nylon fibers are used as the warps, basalt fibers are used as the wefts, the basalt fibers are used as the weaving warps and vertically shuttle between the upper surface and the lower surface of the canvas, heat conduction caused by the fact that the warps shuttle between the upper surface and the lower surface is avoided, and the defect that heat is transmitted between the upper surface and the lower surface of the canvas through the warps is overcome. And meanwhile, when the conveying belt passes through the roller, the canvas is good in warp-direction fatigue resistance and small in strength loss.

Description

Technical Field

[0001] The utility model relates to the technical field of canvas manufacturing, in particular to a heat-resistant basalt dipped canvas. Background Art

[0002] Heat-resistant conveyor belts are the main category of conveyor belt products, usually used to transport high-temperature materials such as metallurgy, chemicals, and building materials. They provide convenience for industrial material transportation and play a vital role in the development of my country's economy and the advancement of science and technology. Most of the skeleton materials used in heat-resistant conveyor belts use nylon fiber and polyester fiber as the core skeleton, and the skeleton is covered with rubber.

[0003] Under high temperature conditions, polyester fiber or polyester fiber bonding layer is easily destroyed due to aminolysis and alcoholysis reactions, causing damage to the conveyor belt. Although nylon 66 fiber will not undergo aminolysis at high temperatures, nylon 66 is prone to creep elongation at high temperatures, which limits the use of nylon 66 fiber. High temperature will damage the fiber skeleton material in the conveyor belt. The impact of high temperature in an isolated environment on the conveyor belt skeleton material has always been the main research direction of the market. The main technical means on the current market are to add ceramic gaskets to the top layer of the canvas conveyor belt, or to further improve the formula of the top layer covering glue. The purpose is to extend the service life of the heat-resistant conveyor belt and improve the heat resistance level.

[0004] Basalt fiber, as a new type of environmentally friendly high-performance fiber, is listed as one of the four high-performance fibers along with aramid, carbon fiber, and ultra-high molecular weight polyethylene. Basalt fiber has excellent properties such as good high temperature resistance, thermal shock stability, low thermal conductivity, high tensile strength and modulus, high sound absorption coefficient, and low moisture absorption rate. Applying the heat-resistant properties of basalt to the canvas skeleton material for conveyor belts has become a research topic for many companies.

[0005] Patent CN204777121U studies flame-retardant conveyor belts made of basalt fabrics, in which the fabric structure is a canvas fabric woven from continuous basalt fibers in both warp and weft. Its characteristic is that the heat insulation and flame retardant properties of basalt fibers are brought into play, but due to the fabric structure, the basalt fibers are subjected to more shearing, which makes the mechanical strength of the basalt fiber fabric worse. The use of basalt fiber fabrics in the warp greatly consumes the service life of the belt body.

[0006] Patent CN105035629A studies a basalt fabric conveyor belt for a heat insulation layer, the warp yarn of which is nylon fiber and the weft yarn is a continuous basalt fiber fabric. The characteristic of the conveyor belt is that the nylon fiber shuttles up and down in the fabric structure, resulting in a higher heat transfer efficiency between the upper and lower surfaces.

[0007] Different from the previous research direction of heat-resistant conveyor belts, this application directly starts from the conveyor belt skeleton layer structure, designs a new canvas fabric structure, and manufactures canvas for heat-resistant conveyor belts by utilizing the heat resistance and low thermal conductivity of basalt. Utility Model Content

[0008] The utility model provides a heat-resistant basalt dipped canvas, which uses polyester or nylon as warp yarn, basalt fiber as the first weft yarn, polyester or nylon as the second and third weft yarns, and basalt fiber as the weaving warp yarn. The special fabric structure avoids heat conduction caused by the warp yarn shuttling between the upper and lower surfaces of the canvas, and ensures the fatigue resistance and strength of the canvas in the warp direction.

[0009] The utility model is realized by the following technical solutions:

[0010] A heat-resistant basalt dipped canvas, the dipped canvas comprising a canvas fabric 6 and a glue coating 7 covering the upper and lower parts thereof, the canvas fabric 6 comprising a first weft yarn 1, a second weft yarn 2 and a third weft yarn 3 arranged in sequence from top to bottom, the second weft yarn 2 and the warp yarn 5 are interwoven with each other, a woven warp yarn 4 is arranged on the upper and lower parts of the canvas fabric 6, the first weft yarn 1 is basalt fiber, the second weft yarn 2 is polyester or nylon fiber, the third weft yarn 3 is polyester or nylon fiber, the woven warp yarn 4 is basalt fiber, and the warp yarn 5 is polyester or nylon fiber.

[0011] Preferably, the total fineness of the first weft yarn 1 is 2000dtex-12000dtex; the total fineness of the second weft yarn 2 and the third weft yarn 3 is 2000dtex-12000dtex, wherein the total fineness of the first weft yarn 1 is not less than the total fineness of the second weft yarn 2 and the third weft yarn 3.

[0012] Preferably, the total fineness of the warp yarn 5 is 2000 dtex-12000 dtex, and the total fineness of the warp yarn 5 is less than or equal to the total fineness of the first weft yarn 1.

[0013] Preferably, the total fineness of the braided warp yarn 4 is 600-6000 dtex, and the total fineness of the braided warp yarn 4 is less than or equal to 2 / 3 of the total fineness of the warp yarn 5.

[0014] The glue coating 7 is a resorcinol-formaldehyde-latex glue coating.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] In the canvas structure of the utility model, the warp yarns are made of polyester or nylon fibers, and the weft yarns are made of basalt fibers. The basalt fibers are used as the weaving warp yarns and shuttle up and down between the upper and lower surfaces of the canvas, thereby avoiding heat conduction caused by the warp yarns shuttling between the upper and lower surfaces, overcoming the heat transfer between the upper and lower surfaces of the canvas by the warp yarns, and at the same time ensuring that the canvas has good fatigue resistance in the warp direction and little strength loss when the conveyor belt passes over rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the side section structure of the canvas fabric of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the canvas fabric of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the rubber-impregnated canvas of the utility model.

[0020] In the figure: 1, first weft yarn; 2, second weft yarn; 3, third weft yarn; 4, woven warp yarn; 5, warp yarn; 6, canvas fabric; 7, glue coating. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] Example 1

[0023] As shown in the attached figure of the instruction manual Figures 1 to 3 As shown, a heat-resistant basalt dipped canvas comprises a canvas fabric 6 and a glue coating 7 covering the upper and lower parts thereof, the glue coating 7 is an RFL (resorcinol-formaldehyde-latex) glue coating, the canvas fabric 6 comprises a first weft yarn 1, a second weft yarn 2 and a third weft yarn 3 arranged in sequence from top to bottom, the second weft yarn 2 and the warp yarn 5 are interwoven with each other, and woven warp yarns 4 are arranged to shuttle between the upper and lower parts of the canvas fabric 6, the first weft yarn 1 is basalt fiber, the second weft yarn 2 is polyester or nylon fiber, the third weft yarn 3 is polyester or nylon fiber, the woven warp yarn 4 is basalt fiber, and the warp yarn 5 is polyester or nylon fiber.

[0024] The total fineness of the first weft yarn 1 is 2000dtex-12000dtex; the total fineness of the second weft yarn 2 and the third weft yarn 3 is 2000dtex-12000dtex, wherein the total fineness of the first weft yarn 1 is not less than the total fineness of the second weft yarn 2 and the third weft yarn 3; the total fineness of the warp yarn 5 is 2000dtex-12000dtex, and the total fineness of the warp yarn 5 is less than or equal to the total fineness of the first weft yarn 1; the total fineness of the weaving warp yarn 4 is 600-6000dtex, and the total fineness of the weaving warp yarn 4 is less than or equal to 2 / 3 of the total fineness of the warp yarn 5.

[0025] Basalt fiber is used as the weaving warp yarn, which shuttles up and down between the upper and lower surfaces of the canvas, avoiding heat conduction caused by the warp yarn shuttling between the upper and lower surfaces, overcoming the heat transfer between the upper and lower surfaces of the canvas by the warp yarn, and at the same time ensuring that the canvas has good fatigue resistance in the warp direction and small strength loss when the conveyor belt passes over the roller.

[0026] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications to the shapes, structures, features and spirits described in the claims of the present invention should be included in the claims of the present invention.

Claims

1. A heat-resistant basalt dipped canvas, characterized by: The dipped canvas comprises a canvas fabric (6) and a glue coating (7) covering the upper and lower sides thereof, wherein the canvas fabric (6) comprises a first weft yarn (1), a second weft yarn (2) and a third weft yarn (3) which are arranged in sequence from top to bottom, wherein the second weft yarn (2) and the warp yarn (5) are interwoven with each other, and a woven warp yarn (4) is arranged to shuttle between the upper and lower sides of the canvas fabric (6), wherein the first weft yarn (1) is basalt fiber, the second weft yarn (2) is polyester or nylon fiber, the third weft yarn (3) is polyester or nylon fiber, the woven warp yarn (4) is basalt fiber, and the warp yarn (5) is polyester or nylon fiber.

2. The heat-resistant basalt dipped canvas according to claim 1, characterized in that: The total fineness of the first weft yarn (1) is 2000 dtex-12000 dtex; the total fineness of the second weft yarn (2) and the third weft yarn (3) is 2000 dtex-12000 dtex, wherein the total fineness of the first weft yarn (1) is not less than the total fineness of the second weft yarn (2) and the third weft yarn (3).

3. The heat-resistant basalt dipped canvas according to claim 1, characterized in that: The total fineness of the warp yarn (5) is 2000 dtex-12000 dtex, and the total fineness of the warp yarn (5) is less than or equal to the total fineness of the first weft yarn (1).

4. The heat-resistant basalt dipped canvas according to claim 1, characterized in that: The total fineness of the braided warp yarn (4) is 600-6000 dtex, and the total fineness of the braided warp yarn (4) is less than or equal to 2 / 3 of the total fineness of the warp yarn (5).

5. The heat-resistant basalt dipped canvas according to claim 1, characterized in that: The glue coating (7) is a resorcinol-formaldehyde-latex glue coating.

Images