CN109880552B - Adhesive glue layer for T4-grade heat-resistant polyester canvas conveyor belt, and preparation method and application thereof - Google Patents
Adhesive glue layer for T4-grade heat-resistant polyester canvas conveyor belt, and preparation method and application thereof Download PDFInfo
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Abstract
The invention provides a bonding adhesive layer for a T4-grade heat-resistant polyester canvas conveyor belt, a preparation method and application thereof, which solve the technical problems of poor bonding adhesive layer bonding strength and large bonding strength loss after aging of the existing conveyor belt at high temperature, and the adhesive layer is provided with adhesive glue, wherein the adhesive glue comprises the following raw materials in parts by weight: 404560-70 parts of EPDM (ethylene-propylene-diene monomer), and 30-40 parts of styrene-butadiene rubber; 15-35 parts of carbon black N, and 5-20 parts of precipitated white carbon black; 133-8 parts of adhesion promoter RICON130MA, 5-15 parts of alkyl phenolic resin HY203, 3-6 parts of aromatic oil, 22803-6 parts of paraffin oil and 3-5 parts of anti-fatigue agent PL-6003; 1-4 parts of an anti-aging agent RD, 1-4 parts of an anti-aging agent MB, and 4451-3 parts of an antioxidant MC; 3-8 parts of zinc oxide, 0.5-1.5 parts of stearic acid, 1-1.5 parts of an accelerant DM, 1-2 parts of a vulcanizing agent DCP and 1-2.2-3 parts of pre-dispersed sulfur S-801.2-3 parts.
Description
Technical Field
The invention relates to the technical field of conveyor belt manufacturing, in particular to an adhesive layer for a T4-grade heat-resistant polyester canvas conveyor belt, and a preparation method and application thereof.
Background
At present, cement plants and steel plants are limited by the process, equipment and technical level, the temperature of materials is high, the phenomena of delamination and cross-section often occur on common heat-resistant temperature conveying belts, particularly, slag which is just discharged onto the conveying belts by a plurality of blast furnaces drives flames, the damage to the conveying belts is great, the service life of the conveying belts is shortened, and the requirements of customers cannot be met. The main reason is that the cover rubber of the high-temperature resistant conveying belt produced at present is ethylene propylene diene monomer rubber, the cover rubber and the adjacent fiber material are bonded by a bonding rubber layer, and the bonding strength loss of the bonding rubber layer is large after high-temperature aging, so that the phenomena of delamination and transverse fracture appear in the use of the high-temperature resistant conveying belt, and the service life of the conveying belt is shortened. Therefore, it is imperative to develop an adhesive layer for a heat-resistant polyester canvas conveyor belt.
Disclosure of Invention
The invention aims to solve the technical defects and provides an adhesive layer of a T4-grade heat-resistant polyester canvas conveyor belt, which has good adhesive force at high temperature and small adhesive strength loss after aging, a preparation method and application thereof.
Therefore, the invention provides a bonding adhesive layer for a T4-grade heat-resistant polyester canvas conveyor belt, which is provided with bonding adhesive, wherein the raw materials of the bonding adhesive comprise the following components in parts by weight:
a rubber system: 60-70 parts of EPDM4045 and 30-40 parts of styrene butadiene rubber;
reinforcing system: 15-35 parts of carbon black N330 and 5-20 parts of precipitated white carbon black;
tackified plasticized softened system: 3-8 parts of adhesion promoter RICON130MA13, 5-15 parts of alkyl phenolic resin HY203, 3-6 parts of aromatic oil, 3-6 parts of paraffin oil Sunpar2280 and 3-5 parts of anti-fatigue agent PL-600;
an anti-aging system: 1-4 parts of antioxidant RD, 1-4 parts of antioxidant MB and 1-3 parts of antioxidant MC 445;
a vulcanization system: 3-8 parts of zinc oxide, 0.5-1.5 parts of stearic acid, 1-1.5 parts of accelerator DM, 1-2 parts of vulcanizing agent DCP and 1.2-3 parts of pre-dispersed sulfur S-80.
Preferably, the adhesive layer for the T4-grade heat-resistant polyester canvas conveyor belt comprises the following raw materials in parts by weight:
65-70 parts of EPDM4045 and 30-40 parts of styrene butadiene rubber; 30-35 parts of carbon black N330 and 5-20 parts of precipitated white carbon black; 5-8 parts of adhesion promoter RICON130MA13, 5-15 parts of alkyl phenolic resin HY203, 2-5 parts of aromatic oil, 4-6 parts of paraffin oil Sunpar2280 and 4-5 parts of anti-fatigue agent PL-600; 1.5-3 parts of antioxidant RD, 1.5-3 parts of antioxidant MB and 1.5-2 parts of antioxidant MC 445; 5-8 parts of zinc oxide, 0.5-1 part of stearic acid, 1.3-1.5 parts of accelerator DM, 1.7-2 parts of vulcanizing agent DCP and 1.2-2.1 parts of pre-dispersed sulfur S-80.
Preferably, the adhesive layer for the T4-grade heat-resistant polyester canvas conveyor belt comprises the following raw materials in parts by weight:
EPDM4045 and styrene butadiene rubber 40; 35 parts of carbon black N330 and 20 parts of precipitated white carbon black; 8 parts of adhesion promoter RICON130MA13, 15 parts of alkyl phenolic resin HY203, 5 parts of aromatic oil, 5 parts of paraffin oil Sunpar2280 and 4.5 parts of anti-fatigue agent PL-600; 3 parts of antioxidant RD, 3 parts of antioxidant MB and 1.5 parts of antioxidant MC 445; 8 parts of zinc oxide, 1 part of stearic acid, 1.5 parts of accelerator DM, 2 parts of vulcanizing agent DCP and 1.5 parts of pre-dispersed sulfur S-80.
The preparation method of the adhesive glue layer for the T4-grade heat-resistant polyester canvas conveyor belt comprises the following steps:
(1) mixing: adding 60-70 parts of EPDM4045 and 30-40 parts of styrene-butadiene rubber into an internal mixer, adding 15-35 parts of carbon black N33015, 5-20 parts of precipitated white carbon black, 133-8 parts of adhesion promoter RICON130MA, 5-15 parts of alkyl phenolic resin HY 2035, 3-6 parts of aromatic oil, 3-6 parts of paraffin oil Sunpar22803, 3-5 parts of anti-fatigue agent PL-6003, 1-4 parts of anti-aging agent RD, 1-4 parts of anti-aging agent MB, 4451-3 parts of antioxidant MC, 3-8 parts of zinc oxide, 0.5-1.5 parts of stearic acid and 1-1.5 parts of accelerator DM into the internal mixer, controlling the mixing temperature to be 80-140 ℃ and the mixing time to be 5-8 minutes; and subsequently, 1-2 parts of vulcanizing agent DCP and 1-3 parts of pre-dispersed sulfur S-801.5-3 parts are added into an internal mixer or an open mill, the mixing temperature is controlled to be 50-100 ℃, the mixing time is controlled to be 3-5 minutes, and the rubber compound is obtained after sheet cooling and standing.
(2) And (3) smelting: and (2) sending the mixed rubber obtained in the step (1) into an open mill for rough milling, controlling the roller temperature to be 45-60 ℃, uniformly wrapping the roller with the softened rubber material, turning over the rubber for 3 times, then rolling down, then sending into the open mill for refining, controlling the roller temperature to be 60-80 ℃ and controlling the time to be 5-8 minutes, and thus obtaining the adhesive in the adhesive layer of the heat-resistant polyester canvas conveyor belt.
(3) A canvas double-sided rubberizing procedure: and (3) sending the hot-refined adhesive in the step (2) into a four-roller calender for cloth pasting operation. The roller temperature of the calender needs to be preheated, the preheating temperature is 80-100 ℃ of the upper roller and the lower roller, the temperature of the two middle rollers is 70-90 ℃, the thickness of the single-side rubberizing of the polyester canvas is 0.4-0.55 mm, the rubberizing amount is determined according to the type of the polyester canvas, the polyester canvas which is rubberized with the adhesive glue is well padded with the padding cloth and curled for forming the conveyer belt, and the adhesive glue layer for the heat-resistant polyester canvas conveyer belt is prepared.
Preferably, the single-side rubberizing thickness of the EP150 type polyester canvas is 0.4mm, the single-side rubberizing thickness of the EP200 type polyester canvas is 0.45mm, the single-side rubberizing thickness of the EP250 type polyester canvas is 0.5mm, and the single-side rubberizing thickness of the EP300 type polyester canvas is 0.55 mm.
In the application of the adhesive layer for the T4-grade heat-resistant polyester canvas conveying belt, the adhesive layer is directly adhered with the covering rubber, and a rubber system in the formula of the covering rubber comprises ethylene propylene diene monomer.
Because of the poor self-adhesion of ethylene propylene diene monomer and the adhesive property of the existing polyester gum dipping canvas dipping system, although natural rubber has excellent processing property and self-adhesion property, the heat-resistant aging property is not as good as that of styrene butadiene rubber, and the adhesive layer is directly adhered with ethylene propylene diene monomer covering rubber, the ethylene propylene diene monomer EPDM4045 with moderate ENB content and excellent processing technology is adopted to be used together with styrene butadiene rubber, in order to improve the heat-resistant aging property of the conveyer belt and achieve the T4 grade heat-resistant property specified in GB/T20021-2017, the natural rubber cannot be added into the adhesive layer rubber system, otherwise, the heat-resistant aging property of the conveyer belt can be reduced. Butadiene rubber is the rubber with the best low-temperature resistance in general-purpose rubber, and is not suitable for being used in a rubber system.
The EPDM4045 and the styrene butadiene rubber have low strength and can meet the service performance only by reinforcement. According to the invention, carbon black N330 and precipitated white carbon black are used together, and the carbon black N330 belongs to high-wear-resistance furnace black and has high reinforcing property; the precipitated white carbon black not only has reinforcing performance, but also can increase the adhesive performance of the sizing material and the polyester canvas, and can reduce the cost.
As the rubber system of the invention mainly uses ethylene propylene diene 4045, although the rubber system is used together with styrene butadiene rubber to improve the heat-resistant aging performance and the self-adhesive performance of the rubber material is improved, but the rubber system can not meet the requirements of the adhesive performance and the process performance at the highest 180 ℃ of the T4 grade, and the compatibility of the ethylene propylene diene rubber EPDM4045 and the styrene butadiene rubber is poor, researches show that the maleic anhydride polybutadiene (RICON130MA13) which is an adhesion promoter with the coupling effect can greatly improve the compatibility of the ethylene propylene diene rubber EPDM4045 and the styrene butadiene rubber, obviously improve the adhesive performance of the adhesive rubber and the polyester canvas, and does not influence the heat aging performance of the adhesive rubber layer of the invention.
The viscosity of the rubber plays an important role in the processing technology of multi-layer products such as a conveyor belt, the separation of a rubber material bonding interface is easily caused when the viscosity is too low, and the viscosity of ethylene propylene diene monomer EPDM4045 and styrene butadiene rubber is lower than that of natural rubber, so a tackifier must be added. Through research, the alkylphenol formaldehyde resin HY203 is used as a non-thermal reaction type alkylphenol formaldehyde resin, and the product of Shanxi chemical research institute is adopted in the embodiment, so that the alkylphenol formaldehyde resin HY203 is high in compatibility with the rubber system, good in viscosity retention, does not influence the physical and chemical properties of the vulcanized adhesive layer, and can improve the aging resistance and the chemical stability of the vulcanized adhesive layer.
Researches show that aromatic oil is the best softener for styrene-butadiene rubber, paraffin oil Sunpar2280 is the best softener for ethylene-propylene-diene monomer EPDM4045, and therefore, the two softeners are used in combination, and the softener is not only capable of meeting the requirement of rubber softening, but also not capable of influencing the adhesive property of adhesive glue and polyester canvas and the heat-resistant aging property of an adhesive glue layer, and is capable of reducing cost. In addition, the invention adds the anti-fatigue agent PL-600, and reduces the influence of the conveyer belt bending fatigue on the adhesive performance of the adhesive to the maximum extent.
The anti-aging agents for the heat-resistant conveying belt adhesive glue comprise RD, BLE, MB, MC, 4010NA and the like, and researches show that if one or more of the existing anti-aging agents are used in combination, the heat-resistant aging performance of the adhesive glue at the highest T4 level of 180 ℃ is not ideal, blooming is easy to occur, the adhesion performance of the adhesive glue and the polyester canvas is seriously influenced, the heat-resistant aging performance of the conveying belt adhesive glue layer can be obviously improved by using the anti-aging agent RD, the anti-aging agent MB and the antioxidant MC445, the blooming phenomenon cannot be generated, and the adhesion performance of the adhesive glue and the polyester canvas cannot be influenced.
Researches show that the adhesive disclosed by the invention adopts an organic peroxide vulcanizing agent DCP and pre-dispersed sulfur S-80 and a vulcanizing system, so that the adhesive property of the adhesive and the polyester canvas can be ensured, and the heat-resistant aging performance of the adhesive layer can be improved to the greatest extent. The invention adopts a direct vulcanization bonding system, so that the bonding adhesive layer has high bonding strength at normal and high temperature, good thermal aging resistance, simple operation process and low manufacturing cost, and is suitable for batch production.
The invention has the beneficial effects that: the invention provides an adhesive layer for a T4-grade heat-resistant polyester canvas conveyor belt and a preparation method and application thereof. The adhesive layer of the heat-resistant polyester canvas conveying belt prepared by the invention is directly adhered with the ethylene propylene diene monomer covering adhesive, so that the production process is simplified, high adhesive force at normal temperature is kept, high adhesive performance is kept at high temperature of 180 ℃, the heat-resistant polyester canvas conveying belt has excellent aging resistance, the loss of adhesive strength after aging is small, and the phenomena of bubbling delamination and transverse cutting of the conveying belt at high temperature are reduced.
Detailed Description
The present invention will be further described with reference to specific examples to assist understanding of the invention. The method used in the invention is a conventional method if no special provisions are made; the raw materials and the apparatus used are, unless otherwise specified, conventional commercially available products.
The raw materials described in the following examples are all commercially available. Wherein the EPDM4045 is a Jilin petrochemical product, and the styrene butadiene rubber is a Qilu petrochemical product; carbon black N330 is Shandongteng Sheng fine chemical industry Co., Ltd, and precipitated white carbon black is a product of Qingzhou Unikebai carbon black Co., Ltd; the adhesion promoter RICON130MA13 is American product, the alkyl phenol-formaldehyde resin HY203 is Shanxi chemical research institute product, the aromatic oil is oil from Taiwan oil Co., Ltd, the paraffin oil Sunpar2280 is Sun from America, and the anti-fatigue agent PL-600 Zhejiang yellow rock east China sea chemical product; the anti-aging agents MB, RD and the accelerant DM are products of Kadsura Heterophylla New Material science and technology Limited, and the antioxidant MC445 is a chemical product of Xincheng Nantong; zinc oxide is a product of Chengmo Industrial and trade company Limited, stearic acid is a product of Shandong high-density friend strong assistant company Limited, vulcanizing agent DCP is a product of Aksu in the Netherlands, and pre-dispersed sulfur S-80 is a product of New materials science and technology Limited in Weihai sky.
The adhesive formula of the adhesive layer used for the T4 grade heat-resistant polyester canvas conveyor belt in the embodiments 1, 2, 3, 4 and 5 is shown in the following table 1: (the content unit of each raw material in Table 1 is weight portion)
Table 1: formula of adhesive layer of heat-resistant polyester canvas conveying belt
| Formulation components | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| EPDM 4045 | 60 | 70 | 65 | 70 | 68 |
| Styrene butadiene rubber | 30 | 40 | 35 | 30 | 32 |
| Carbon Black N330 | 30 | 35 | 35 | 35 | 15 |
| White carbon black by precipitation method | 15 | 20 | 15 | 5 | 20 |
| Adhesion promoter RICON130MA13 | 3 | 8 | 5 | 5 | 8 |
| Alkylphenol-formaldehyde resin HY203 | 10 | 15 | 12 | 5 | 14 |
| Aromatic oil | 3 | 5 | 3 | 2 | 6 |
| Paraffin oil Sunpar2280 | 3 | 5 | 4 | 6 | 3 |
| Antifatigue PL-600 | 3 | 4.5 | 4 | 5 | 5 |
| Antiager RD | 1 | 3 | 2 | 1.5 | 4 |
| Anti-aging agent MB | 4 | 3 | 2 | 1.5 | 1 |
| Antioxidant MC445 | 1 | 1.5 | 2 | 1.5 | 3 |
| Oxidation by oxygenZinc | 4 | 8 | 5 | 6 | 3 |
| Stearic acid | 1.5 | 1 | 1 | 0.5 | 0.8 |
| Accelerator DM | 1 | 1.5 | 1.3 | 1.5 | 1.4 |
| Vulcanizing agent DCP | 1 | 2 | 1.7 | 1.8 | 2 |
| Pre-dispersed sulfur S-80 | 3 | 1.5 | 2.1 | 1.2 | 1.7 |
The preparation method of the adhesive glue layer for the heat-resistant polyester canvas conveying belt of the T4 grade described in the above embodiments 1, 2, 3, 4 and 5 comprises the following steps:
(1) mixing: adding EPDM4045 and styrene-butadiene rubber into an internal mixer, adding carbon black N330, precipitated white carbon black, an adhesion promoter RICON130MA13, alkyl phenolic resin HY203, aromatic oil, paraffin oil Sunpar2280, an anti-fatigue agent PL-600, an anti-aging agent RD, an anti-aging agent MB, an antioxidant MC445, zinc oxide, stearic acid and an accelerator DM into the internal mixer, controlling the mixing temperature to be 80-140 ℃, and controlling the mixing time to be 5-8 minutes; and subsequently adding a vulcanizing agent DCP and pre-dispersed sulfur S-80 into an internal mixer, controlling the mixing temperature to be 50-100 ℃, controlling the mixing time to be 3-5 minutes, and cooling and standing a lower piece to obtain the rubber compound.
(2) And (3) smelting: and (2) sending the mixed rubber obtained in the step (1) into an open mill for rough milling, controlling the roller temperature to be 45-60 ℃, uniformly wrapping the roller with the softened rubber material, turning over the rubber for 3 times, then rolling down, then sending into the open mill for refining, controlling the roller temperature to be 60-80 ℃ and controlling the time to be 5-8 minutes, and thus obtaining the adhesive in the adhesive layer of the heat-resistant polyester canvas conveyor belt.
(3) A canvas double-sided rubberizing procedure: and (3) sending the hot-refined adhesive in the step (2) into a four-roller calender for cloth pasting operation. Preheating the roller temperature of the calender, wherein the preheating temperature is 80-100 ℃ for the upper roller and the lower roller, the temperature for the two middle rollers is 70-90 ℃, and the gluing amount is determined according to the model of the canvas, wherein the example 1 is EP150 type polyester canvas, and the single-side gluing thickness of the canvas is 0.4 mm; example 2 is EP200 type polyester canvas with a single-sided rubberizing thickness of 0.45 mm; example 3 is EP200 type polyester canvas with a single-sided rubberizing thickness of 0.45 mm; example 4 is EP250 type polyester canvas with a single-sided rubberizing thickness of 0.5 mm; example 5 is EP300 type polyester canvas with a single-sided rubberizing thickness of 0.55 mm; and (3) padding the polyester canvas pasted with the adhesive glue with a piece of padding cloth, curling the padding cloth for preparing a conveyer belt for molding, and preparing the adhesive glue layer for the heat-resistant polyester canvas conveyer belt.
In the step (2), the operations of adding the vulcanizing agent DCP and pre-dispersing the sulfur S-80 can also be performed on an open mill, the mixing temperature is controlled to be 50-100 ℃, the mixing time is controlled to be 3-5 minutes, and the rubber compound is obtained after sheet cooling and standing.
The mechanical properties of the adhesive and adhesive layer prepared in examples 1 to 5 are shown in table 2 below, wherein the comparative examples are the mechanical properties of the adhesive and adhesive layer for the heat-resistant polyester canvas belt of the prior art. The test standard is GB/T20021-2017.
Table 2: adhesive for heat-resistant polyester canvas conveyor belt and mechanical property data of adhesive layer
Compared with the prior art, the bonding adhesive layer has the advantages that the bonding strength at high temperature of 180 ℃ and the interlayer bonding strength after aging at 180 ℃ for 168 hours are obviously higher than the prior art, the loss is smaller compared with the bonding strength at normal temperature, the high bonding force at normal temperature is maintained, the high bonding performance at high temperature of 180 ℃ is also maintained, the aging resistance is excellent, the bonding force after aging is excellent, the heat resistance related to the T4 grade in the GB/T20021-2017 standard is achieved, and the phenomena of delamination and bubbling at high temperature of the conveying belt and transverse breakage of the conveying belt are reduced.
The adhesive layer of the T4-grade heat-resistant polyester canvas conveyor belt prepared by the invention is applied to the T4-grade heat-resistant polyester canvas conveyor belt, and the adhesive layer can be directly adhered with the conveyor belt covering rubber, so that a transitional adhesive layer between the adhesive layer and the covering rubber in the prior art is omitted, and a rubber system in the formula of the conveyor belt covering rubber contains ethylene propylene diene monomer rubber which is used alone or is used together with other rubber. The adhesive layer can also be applied to a heat-resistant polyester canvas conveying belt with the heat resistance of not more than 180 ℃, for example, the covering rubber of the heat-resistant conveying belt disclosed by the invention patent with the publication number of 104312018A, and the rubber system of the covering rubber is formed by combining ethylene propylene diene monomer and ethylene propylene diene monomer, thereby meeting the requirement of the heat-resistant temperature of 175 ℃.
However, the above description is only exemplary of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.
Claims (6)
1. The adhesive layer for the T4-grade heat-resistant polyester canvas conveying belt is provided with adhesive, and is characterized in that the adhesive comprises the following raw materials in parts by weight:
60-70 parts of EPDM4045 and 30-40 parts of styrene butadiene rubber; 15-35 parts of carbon black N330 and 5-20 parts of precipitated white carbon black; 3-8 parts of adhesion promoter RICON130MA13, 5-15 parts of alkyl phenolic resin HY203, 3-6 parts of aromatic oil, 3-6 parts of paraffin oil Sunpar2280 and 3-5 parts of anti-fatigue agent PL-600; 1-4 parts of antioxidant RD, 1-4 parts of antioxidant MB and 1-3 parts of antioxidant MC 445; 3-8 parts of zinc oxide, 0.5-1.5 parts of stearic acid, 1-1.5 parts of accelerator DM, 1-2 parts of vulcanizing agent DCP and 1.2-3 parts of pre-dispersed sulfur S-80.
2. The adhesive layer for the T4-grade heat-resistant polyester canvas conveyor belt according to claim 1, wherein the adhesive raw material comprises the following components in parts by weight:
65-70 parts of EPDM4045 and 30-40 parts of styrene butadiene rubber; 30-35 parts of carbon black N330 and 5-20 parts of precipitated white carbon black; 5-8 parts of adhesion promoter RICON130MA13, 5-15 parts of alkyl phenolic resin HY203, 2-5 parts of aromatic oil, 4-6 parts of paraffin oil Sunpar2280 and 4-5 parts of anti-fatigue agent PL-600; 1.5-3 parts of antioxidant RD, 1.5-3 parts of antioxidant MB and 1.5-2 parts of antioxidant MC 445; 5-8 parts of zinc oxide, 0.5-1 part of stearic acid, 1.3-1.5 parts of accelerator DM, 1.7-2 parts of vulcanizing agent DCP and 1.2-2.1 parts of pre-dispersed sulfur S-80.
3. The adhesive layer for the T4-grade heat-resistant polyester canvas conveyor belt according to claim 2, wherein the adhesive raw material comprises the following components in parts by weight:
EPDM4045 and styrene butadiene rubber 40; 35 parts of carbon black N330 and 20 parts of precipitated white carbon black; 8 parts of adhesion promoter RICON130MA13, 15 parts of alkyl phenolic resin HY203, 5 parts of aromatic oil, 5 parts of paraffin oil Sunpar2280 and 4.5 parts of anti-fatigue agent PL-600; 3 parts of antioxidant RD, 3 parts of antioxidant MB and 1.5 parts of antioxidant MC 445; 8 parts of zinc oxide, 1 part of stearic acid, 1.5 parts of accelerator DM, 2 parts of vulcanizing agent DCP and 1.5 parts of pre-dispersed sulfur S-80.
4. The method for preparing the adhesive glue layer for the T4-grade heat-resistant polyester canvas conveying belt according to any one of claims 1 to 3, comprising the following steps:
(1) mixing: adding EPDM4045 and styrene-butadiene rubber into an internal mixer, adding carbon black N330, precipitated white carbon black, an adhesion promoter RICON130MA13, alkyl phenolic resin HY203, aromatic oil, paraffin oil Sunpar2280, an anti-fatigue agent PL-600, an anti-aging agent RD, an anti-aging agent MB, an antioxidant MC445, zinc oxide, stearic acid and an accelerator DM into the internal mixer, controlling the mixing temperature to be 80-140 ℃, and controlling the mixing time to be 5-8 minutes; adding a vulcanizing agent DCP and pre-dispersed sulfur S-80 into an internal mixer or an open mill, controlling the mixing temperature to be 50-100 ℃, controlling the mixing time to be 3-5 minutes, and cooling and standing a lower piece to obtain a rubber compound;
(2) and (3) smelting: sending the mixed rubber obtained in the step (1) into an open mill for rough milling, controlling the roller temperature to be 45-60 ℃, uniformly wrapping the roller with the softened rubber material, turning over the rubber material for 3 times, then rolling down, sending into the open mill for refining, controlling the roller temperature to be 60-80 ℃ and controlling the time to be 5-8 minutes, and obtaining the adhesive rubber in the adhesive layer of the heat-resistant polyester canvas conveyor belt;
(3) a canvas double-sided rubberizing procedure: sending the hot-refined adhesive in the step (2) into a four-roller calender for cloth pasting operation; the roller temperature of the calender needs to be preheated, the preheating temperature is 80-100 ℃ of the upper roller and the lower roller, the temperature of the two middle rollers is 70-90 ℃, the thickness of the single-side rubberizing of the polyester canvas is 0.4-0.55 mm, the rubberizing amount is determined according to the type of the polyester canvas, the polyester canvas which is rubberized with the adhesive glue is well padded with the padding cloth and curled for forming the conveyer belt, and the adhesive glue layer for the heat-resistant polyester canvas conveyer belt is prepared.
5. The method for preparing a bonding adhesive layer for a T4 grade heat-resistant polyester canvas conveyor belt according to claim 4, wherein the one-sided rubberizing thickness of EP150 type polyester canvas is 0.4mm, the one-sided rubberizing thickness of EP200 type polyester canvas is 0.45mm, the one-sided rubberizing thickness of EP250 type polyester canvas is 0.5mm, and the one-sided rubberizing thickness of EP300 type polyester canvas is 0.55 mm.
6. The use of an adhesive tape layer for a T4-grade heat-resistant polyester canvas belt according to any one of claims 1 to 5, wherein the adhesive tape layer is directly adhered to a covering tape, and the covering tape is formulated with a rubber system comprising ethylene propylene diene monomer.
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| CN113290950A (en) * | 2021-03-23 | 2021-08-24 | 上海米莜凯自动化装备有限公司 | Temperature-resistant deformation conveying belt and preparation method thereof |
| CN114456505A (en) * | 2022-03-01 | 2022-05-10 | 青岛科技大学 | Preparation method of high-adhesion-strength Ethylene Propylene Diene Monomer (EPDM) adhesive for high-temperature-resistant conveying belt |
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| CN106244052A (en) * | 2016-07-29 | 2016-12-21 | 芜湖华烨工业用布有限公司 | A kind of heat-resisting canvas rubberizing used for conveyer belt and preparation method |
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Denomination of invention: An adhesive layer for T4 grade heat-resistant polyester canvas conveyor belt and its preparation method and application Effective date of registration: 20230201 Granted publication date: 20210209 Pledgee: Weihai Commercial Bank Co.,Ltd. Rongcheng Ningjin Sub branch Pledgor: WEIHAI RONGHUA TAPE Co.,Ltd. Registration number: Y2023980031872 |
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