CN112048914A - High-temperature-resistant gumming canvas - Google Patents
High-temperature-resistant gumming canvas Download PDFInfo
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- CN112048914A CN112048914A CN202010881705.4A CN202010881705A CN112048914A CN 112048914 A CN112048914 A CN 112048914A CN 202010881705 A CN202010881705 A CN 202010881705A CN 112048914 A CN112048914 A CN 112048914A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/6436—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing amino groups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
- B65G15/34—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/59—Polyamides; Polyimides
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/24—Polymers or copolymers of alkenylalcohols or esters thereof; Polymers or copolymers of alkenylethers, acetals or ketones
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/26—Polymers or copolymers of unsaturated carboxylic acids or derivatives thereof
- D06M2101/28—Acrylonitrile; Methacrylonitrile
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/30—Flame or heat resistance, fire retardancy properties
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/35—Abrasion, pilling or fibrillation resistance
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/06—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/10—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
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- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a high-temperature-resistant gummed canvas which is composed of a canvas and a gummed layer coated on the outer surface of the canvas; the canvas is formed by vertically interweaving warps and wefts; the warp threads are divided into first warp threads and second warp threads; the first warp threads and the second warp threads are alternately arranged; the first warp is formed by spirally twisting two strands of nylon 66 cords, and the specification of the nylon 66 cords is 180-210D; the second warp is formed by spirally twisting two strands of acrylic cords, and the specification of the acrylic cords is 110-135D; the weft is formed by spirally twisting three strands of vinylon cords, and the specification of the vinylon cords is 235-275D. The high-temperature resistant gum dipping canvas can be used for a long time in high-temperature occasions, and has high strength, long service life and excellent environmental adaptability.
Description
Technical Field
The invention relates to the field of canvas, in particular to high-temperature-resistant gum dipping canvas.
Background
The conveyer belt is a product compounded by an elastomer and fabric which are used for bearing and conveying materials in the belt conveyer belt; the transmission belt is a transmission medium in a transmission belt system, and is a product of an elastomer and a fabric for power transmission. Conveyor belts and belts are widely used in life due to their high operating efficiency.
The fabric compounded by the conveying belt and the driving belt mainly has the functions of connecting the elastomer, keeping the dimensional stability of the elastomer and protecting the elastomer from abrasion, impregnation and corrosion, and the strength, the impact resistance, the flexing resistance and the like of the belt body are closely related to the performance of the fabric.
The traditional fabric compounded by the conveying belt and the transmission belt is cotton, polyester, aramid fiber, chinlon and other fiber fabrics, and although the fiber fabrics have the advantages of light weight and low price, the fabric is difficult to play a role in protecting the belt body when being applied to relevant extreme working environments such as long-term illumination, high temperature and the like. The gum dipping canvas appeared in recent years is gradually widely applied due to excellent environmental adaptability and excellent temperature change resistance; the advantage of further lifting the dipped canvas becomes a new breakthrough of the fabric material for lifting the conveyer belt and the transmission belt at present.
Disclosure of Invention
The invention aims to provide high-temperature-resistant impregnated canvas. The high-temperature resistant gum dipping canvas can be used for a long time in high-temperature occasions, and has high strength, long service life and excellent environmental adaptability.
The technical scheme of the invention is as follows: the high-temperature resistant gummed canvas consists of a canvas and a gummed layer coated on the outer surface of the canvas; the canvas is formed by vertically interweaving warps and wefts; the warp threads are divided into first warp threads and second warp threads; the first warp threads and the second warp threads are alternately arranged; the first warp is formed by spirally twisting two strands of nylon 66 cords, and the specification of the nylon 66 cords is 180-210D; the second warp is formed by spirally twisting two strands of acrylic cords, and the specification of the acrylic cords is 110-135D; the weft is formed by spirally twisting three strands of vinylon cords, and the specification of the vinylon cords is 235-275D. The gum dipping layer (2) is formed by curing modified silicon rubber, and the modified silicon rubber comprises the following components in a weight ratio of 4-6: 1: 2-3 and A, B, C.
The component A is composed of the following raw materials in parts by weight:
60-70 parts of vinyl-terminated polydimethylsiloxane, 10-16 parts of caprolactam, 0.2-0.3 part of dicumyl peroxide and a silane coupling agent Kh 5501-2 parts;
the preparation method of the component A comprises the following steps:
(1) adding dicumyl peroxide into anhydrous ethanol with the weight of 20-30 times of that of the dicumyl peroxide, and uniformly stirring to obtain an initiator solution;
(2) mixing silane coupling agent Kh550 and caprolactam, feeding the mixture into a planetary stirrer, uniformly stirring, discharging the mixture, feeding the mixture into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to 180-plus-210 ℃, adding vinyl-terminated polydimethylsiloxane and initiator solution, keeping the temperature and stirring for 40-50 minutes, discharging the mixture and cooling the mixture to obtain component A.
The component B is formed by mixing hydrogen-containing silicone oil and a platinum catalyst in a weight ratio of 80-90: 1.
The component C is composed of the following raw materials in parts by weight:
70-100 parts of ethyl orthosilicate, 30-40 parts of bentonite, 7-10 parts of stearic acid, 0.8-1 part of p-toluenesulfonic acid and sp-802-3 parts of a mixture;
the preparation method of the component C comprises the following steps:
(1) heating and melting stearic acid, adding bentonite, and fully ball-milling to obtain an abrasive;
(2) mixing ethyl orthosilicate and p-toluenesulfonic acid, adding into deionized water 15-20 times of the weight of the mixture, adding abrasive and sp-80, stirring for 3-5 hours, and concentrating until the water content is 10-15% to obtain the component C.
The modified silicone rubber is cured and molded by the following steps:
(1) a, C components are mixed, heat treated for 1 to 2 hours at the temperature of 75 to 80 ℃, and dehydrated at the temperature of 170 and 180 ℃ to obtain a base material;
(2) adding the component B into the base material, stirring uniformly, coating the canvas (1) on the outer surface, and curing and molding at the temperature of 200-210 ℃.
Compared with the prior art, the invention has the following remarkable progress:
1) the high-temperature-resistant gum dipping canvas adopts the vinylon cords in the weft direction, so that the high-temperature-resistant gum dipping canvas can ensure that the high-temperature-resistant gum dipping canvas is not easy to deform and run long after bearing the load when being used with a conveying belt and a driving belt in a composite way, thereby increasing the structural strength and the service life of the belt body; the nylon 66 and the acrylic thread rope in the warp direction can enable the adhesive tape to have good grooving performance and have large adaptability to the use environment;
2) the surface-coated gum dipping layer improves the bonding strength of the canvas and the rubber, greatly increases the protective effect of the canvas on the belt body, also improves the wear resistance, the corrosion resistance, the high temperature resistance and the tensile resistance, and ensures that the belt body can be used for a long time in high-strength and high-temperature occasions.
In the high-temperature resistant impregnated canvas, the impregnated layer is formed by coating and curing modified silicone rubber. The silicon rubber has excellent low temperature resistance and high temperature resistance, so that the high temperature resistant gum dipping canvas can bear higher temperature, and can be used for a long time within the temperature range of minus 45-180 ℃.
In the high temperature resistant dipped canvas, the canvas is twill fabric. At the moment, the shape following performance and the infiltration performance of the canvas are good, and the combination firmness of the canvas and the gum dipping can be ensured. And the surface is smooth and the surface gum dipping area is large, so that the phenomena of wrinkles and creases of the canvas are reduced, and the durability of use is ensured.
The gum dipping layer adopts the modified silicone rubber as the coating material, the coating material takes the liquid silicone rubber as the main material, and introduces the blending composition of silica sol, polycaprolactam and the like, in the process of preparing the base material, the vinyl-terminated polydimethylsiloxane and the aminosilane modified monomer are blended and polymerized, so that the vinyl-terminated polydimethylsiloxane and the aminosilane modified polymer are effectively compounded, and then the vinyl-terminated polydimethylsiloxane and the aminosilane modified polymer are blended and dispersed with the silica sol containing a small amount of water, and through dehydration and drying, not only is stable silica sol formed, but also the dispersion performance of the silica sol and the polycaprolactam among the liquid rubber is improved through the reaction of carboxyl and amine, the uniformity and the mechanical stability strength of the emulsion are improved, the coating stability of the cured modified silicone rubber is high, the mechanical strength is high, and the modified silicone rubber also has the excellent toughness, rebound resilience and heat-resistant stability of the polycaprolactam, the comprehensive performance is superior.
Drawings
FIG. 1 is a schematic structural view of a high temperature resistant rubberized canvas of the present invention;
FIG. 2 is a schematic view of the structure of the canvas of the present invention;
the labels in the figures are: 1-canvas, 11-warp, 111-first warp; 112-a second warp thread; 12-weft; 2-a gum dipping layer.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Example 1
The high-temperature resistant gummed canvas is composed of a canvas 1 and a gummed layer 2 coated on the outer surface of the canvas 1 as shown in figures 1 and 2; the canvas 1 is formed by vertically interweaving warps 11 and wefts 12; the warp yarns 11 are divided into first warp yarns 111 and second warp yarns 112; the first warps 111 and the second warps 112 are alternately arranged; the first warp 111 is formed by spirally twisting two strands of nylon 66 cord, and the specification of the nylon 66 cord is 180D; the second warp 112 is formed by spirally twisting two strands of acrylic cords, and the specification of the acrylic cords is 110D; the weft 12 is formed by spirally twisting three vinylon cords, and the specification of the vinylon cords is 235D.
The impregnation layer 2 is formed by curing modified silicon rubber.
The canvas 1 is a twill fabric.
The modified silicone rubber comprises the following components in a weight ratio of 4: 1: a, B, C component of 2.
The component A is composed of the following raw materials in parts by weight: 60 parts of vinyl-terminated polydimethylsiloxane, 10 parts of caprolactam, 0.2 part of dicumyl peroxide and a silane coupling agent Kh 5501;
the preparation method of the component A comprises the following steps:
(1) adding dicumyl peroxide into absolute ethyl alcohol with the weight 20 times of that of the dicumyl peroxide, and uniformly stirring to obtain an initiator solution;
(2) mixing silane coupling agent Kh550 and caprolactam, feeding the mixture into a planetary stirrer, uniformly stirring, discharging, feeding the mixture into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to 180 ℃, adding vinyl-terminated polydimethylsiloxane and initiator solution, keeping the temperature and stirring for 40 minutes, discharging and cooling to obtain a component A.
The component B is formed by mixing hydrogen-containing silicone oil and a platinum catalyst in a weight ratio of 80: 1.
The component C is composed of the following raw materials in parts by weight: 70 parts of ethyl orthosilicate, 30 parts of bentonite, 7 parts of stearic acid, 0.8 part of p-toluenesulfonic acid and sp-802 parts;
the preparation method of the component C comprises the following steps:
(1) heating and melting stearic acid, adding bentonite, and fully ball-milling to obtain an abrasive;
(2) mixing ethyl orthosilicate and p-toluenesulfonic acid, adding into deionized water 15 times of the weight of the mixture, adding abrasive and sp-80, stirring for 3 hours, and concentrating until the water content is 10% to obtain the component C.
The modified silicone rubber is cured and molded by the following steps:
(1) a, C components are mixed, heat treated for 1 hour at 75 ℃, dehydrated at 170 ℃ and 180 ℃ to obtain a base material;
(2) the component B is added into the base material, evenly stirred, coated on the outer surface of the canvas 1 and cured and molded at the temperature of 200 ℃.
Example 2
The high-temperature resistant gummed canvas is composed of a canvas 1 and a gummed layer 2 coated on the outer surface of the canvas 1 as shown in figures 1 and 2; the canvas 1 is formed by vertically interweaving warps 11 and wefts 12; the warp yarns 11 are divided into first warp yarns 111 and second warp yarns 112; the first warps 111 and the second warps 112 are alternately arranged; the first warp 111 is formed by spirally twisting two strands of nylon 66 cords, and the specification of the nylon 66 cord is 210D; the second warp 112 is formed by twisting two strands of acrylic cords in a spiral shape, and the specification of the acrylic cords is 135D; the weft 12 is formed by spirally twisting three vinylon cords, and the specification of the vinylon cords is 275D.
The impregnation layer 2 is formed by curing modified silicon rubber.
The canvas 1 is a twill fabric.
The modified silicone rubber comprises the following components in a weight ratio of 6: 1: a, B, C component of 3.
The component A is composed of the following raw materials in parts by weight: vinyl-terminated polydimethylsiloxane 70, caprolactam 16, dicumyl peroxide 0.3 and a silane coupling agent Kh 5502;
the preparation method of the component A comprises the following steps:
(1) adding dicumyl peroxide into absolute ethyl alcohol with the weight 30 times that of the dicumyl peroxide, and uniformly stirring to obtain an initiator solution;
(2) mixing silane coupling agent Kh550 and caprolactam, feeding the mixture into a planetary stirrer, uniformly stirring, discharging, feeding the mixture into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to 210 ℃, adding vinyl-terminated polydimethylsiloxane and initiator solution, keeping the temperature and stirring for 50 minutes, discharging and cooling to obtain a component A.
The component B is formed by mixing hydrogen-containing silicone oil and a platinum catalyst in a weight ratio of 90: 1.
The component C is composed of the following raw materials in parts by weight: 100 parts of ethyl orthosilicate, 40 parts of bentonite, 10 parts of stearic acid, 1 part of p-toluenesulfonic acid and sp-803 parts of p-toluenesulfonic acid;
the preparation method of the component C comprises the following steps:
(1) heating and melting stearic acid, adding bentonite, and fully ball-milling to obtain an abrasive;
(2) mixing ethyl orthosilicate and p-toluenesulfonic acid, adding into deionized water with the weight 20 times that of the mixture, adding abrasive and sp-80, stirring for 5 hours, and concentrating until the water content is 15% to obtain the component C.
The modified silicone rubber is cured and molded by the following steps:
(1) a, C components are mixed, heat treated for 1-2 hours at 80 ℃, dehydrated at 180 ℃ to obtain base materials;
(2) the component B is added into the base material, evenly stirred, coated on the outer surface of the canvas 1 and cured and molded at the temperature of 210 ℃.
Example 3
The high-temperature resistant gummed canvas is composed of a canvas 1 and a gummed layer 2 coated on the outer surface of the canvas 1 as shown in figures 1 and 2; the canvas 1 is formed by vertically interweaving warps 11 and wefts 12; the warp yarns 11 are divided into first warp yarns 111 and second warp yarns 112; the first warps 111 and the second warps 112 are alternately arranged; the first warp 111 is formed by spirally twisting two strands of nylon 66 cords, and the specification of the nylon 66 cord is 200D; the second warp 112 is formed by spirally twisting two strands of acrylic cords, and the specification of the acrylic cords is 120D; the weft 12 is formed by spirally twisting three vinylon cords, and the specification of the vinylon cords is 250D.
The impregnation layer 2 is formed by curing modified silicon rubber.
The canvas 1 is a twill fabric.
The modified silicone rubber comprises the following components in a weight ratio of 5: 1: a, B, C component of 2.
The component A is composed of the following raw materials in parts by weight: vinyl-terminated polydimethylsiloxane 65, caprolactam 12, dicumyl peroxide 0.24 and a silane coupling agent Kh 5501;
the preparation method of the component A comprises the following steps:
(1) adding dicumyl peroxide into absolute ethyl alcohol with the weight 24 times that of the dicumyl peroxide, and uniformly stirring to obtain an initiator solution;
(2) mixing silane coupling agent Kh550 and caprolactam, feeding the mixture into a planetary stirrer, uniformly stirring, discharging, feeding the mixture into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to 200 ℃, adding vinyl-terminated polydimethylsiloxane and initiator solution, keeping the temperature and stirring for 43 minutes, discharging and cooling to obtain a component A.
The component B is formed by mixing hydrogen-containing silicone oil and a platinum catalyst in a weight ratio of 84: 1.
The component C is composed of the following raw materials in parts by weight: ethyl orthosilicate 90, bentonite 34, stearic acid 9, p-toluenesulfonic acid 0.8 and sp-803;
the preparation method of the component C comprises the following steps:
(1) heating and melting stearic acid, adding bentonite, and fully ball-milling to obtain an abrasive;
(2) mixing ethyl orthosilicate and p-toluenesulfonic acid, adding into deionized water 18 times of the weight of the mixture, adding abrasive and sp-80, stirring for 4 hours, and concentrating until the water content is 13% to obtain the component C.
The modified silicone rubber is cured and molded by the following steps:
(1) a, C components are mixed, heat treated for 1 hour at 77 ℃, dehydrated at 175 ℃ to obtain base materials;
(2) the component B is added into the base material, evenly stirred, coated on the outer surface of the canvas 1 and cured and molded at 205 ℃.
The following are the results of the adhesion strength tests according to GB/T31334.1-2015:
the above general description of the invention and the description of the specific embodiments thereof referred to in this application should not be construed as limiting the technical solutions of the invention. Those skilled in the art can add, reduce or combine the technical features disclosed in the general description and/or the embodiments to form other technical solutions within the protection scope of the present application without departing from the present disclosure.
Claims (10)
1. High temperature resistant gumming canvas, its characterized in that: the canvas consists of a canvas (1) and a gum dipping layer (2) coated on the outer surface of the canvas (1); the canvas (1) is formed by vertically interweaving warps (11) and wefts (12); the warp (11) is divided into a first warp (111) and a second warp (112); the first warp threads (111) and the second warp threads (112) are alternately arranged; the first warp (111) is formed by spirally twisting two strands of nylon 66 cords, and the specification of the nylon 66 cords is 180-210D; the second warp (112) is formed by spirally twisting two strands of acrylic cords, and the specification of the acrylic cords is 110-135D; the weft (12) is formed by spirally twisting three vinylon ropes, and the specification of the vinylon ropes is 235-275D.
2. The high temperature resistant canvas dipped according to claim 1, in which: the gum dipping layer (2) is formed by curing modified silicon rubber.
3. The high temperature resistant canvas dipped according to claim 2, in which: the canvas (1) is twill fabric.
4. The high temperature resistant canvas dipped according to claim 3, in which: the specification of the nylon 66 cord is 190D; the specification of the acrylic fiber cord is 120D; the specification of the vinylon wire rope is 255D.
5. The high temperature resistant canvas dipped according to claim 2, in which: the modified silicone rubber comprises the following components in a weight ratio of 4-6: 1: 2-3 and A, B, C.
6. The high temperature resistant canvas dipped according to claim 5, in which: the component A is composed of the following raw materials in parts by weight:
60-70 parts of vinyl-terminated polydimethylsiloxane, 10-16 parts of caprolactam, 0.2-0.3 part of dicumyl peroxide and a silane coupling agent Kh 5501-2 parts;
the preparation method of the component A comprises the following steps:
(1) adding dicumyl peroxide into anhydrous ethanol with the weight of 20-30 times of that of the dicumyl peroxide, and uniformly stirring to obtain an initiator solution;
(2) mixing silane coupling agent Kh550 and caprolactam, feeding the mixture into a planetary stirrer, uniformly stirring, discharging the mixture, feeding the mixture into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to 180-plus-210 ℃, adding vinyl-terminated polydimethylsiloxane and initiator solution, keeping the temperature and stirring for 40-50 minutes, discharging the mixture and cooling the mixture to obtain component A.
7. The high temperature resistant canvas dipped according to claim 5, in which: the component B is formed by mixing hydrogen-containing silicone oil and a platinum catalyst in a weight ratio of 80-90: 1.
8. The high temperature resistant canvas dipped according to claim 5, in which: the component C is composed of the following raw materials in parts by weight:
70-100 parts of ethyl orthosilicate, 30-40 parts of bentonite, 7-10 parts of stearic acid, 0.8-1 part of p-toluenesulfonic acid and sp-802-3 parts of a mixture;
the preparation method of the component C comprises the following steps:
(1) heating and melting stearic acid, adding bentonite, and fully ball-milling to obtain an abrasive;
(2) mixing ethyl orthosilicate and p-toluenesulfonic acid, adding into deionized water 15-20 times of the weight of the mixture, adding abrasive and sp-80, stirring for 3-5 hours, and concentrating until the water content is 10-15% to obtain the component C.
9. The high-temperature-resistant gummed canvas as claimed in claim 5, wherein the modified silicone rubber is cured and formed by the following steps:
(1) a, C components are mixed, heat treated for 1 to 2 hours at the temperature of 75 to 80 ℃, and dehydrated at the temperature of 170 and 180 ℃ to obtain a base material;
(2) and adding the component B into the base material, uniformly stirring, coating the canvas (1) on the outer surface, and curing and forming.
10. The high temperature resistant impregnated canvas as claimed in claim 9, wherein the curing and forming temperature in step (2) is 200-210 ℃.
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| CN203451746U (en) * | 2013-07-18 | 2014-02-26 | 山东海龙博莱特化纤有限责任公司 | High-temperature-resistant EP canvas for conveyer belt |
| CN103790028A (en) * | 2014-01-02 | 2014-05-14 | 芜湖华烨工业用布有限公司 | Impregnation liquid of high-temperature-resistant industrial canvas, production method thereof and impregnation technology |
| CN104495215A (en) * | 2014-10-21 | 2015-04-08 | 北京化工大学 | High-temperature-resistant rubber conveying belt and preparation method thereof |
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| JP2001295174A (en) * | 2000-02-08 | 2001-10-26 | Nippon Soda Co Ltd | Photocatalyst carriered tent canvas and method for producing the same |
| EP1637767A2 (en) * | 2004-09-17 | 2006-03-22 | Tsubakimoto Chain Co. | Toothed belt |
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