阅读说明：本技术 一种具有高使用寿命的双向运转节能齿接糊盒机带及其制造方法 (Bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life and manufacturing method thereof ) 是由 徐国良 张君 高显 于 2021-08-02 设计创作，主要内容包括：本发明公开了一种具有高使用寿命的双向运转节能齿接糊盒机带及其制造方法,涉及传送材料技术领域。本发明先将羧基丁腈橡胶生胶作为原料,并加入白炭黑、橡胶油、硫化助剂、防静电剂和硫化剂,制得摩擦层原料,然后,将乳酸与四臂星形聚乙二醇再引发剂作用下聚合,制得改性聚乳酸,将改性聚乳酸与丁腈橡胶混合密炼,并与丙酮混合,制得改性胶黏剂,最后,将改性胶黏剂涂覆于由尼龙12制得的骨架层两侧,并与摩擦层原料贴合,辐照后热压,制得具有高使用寿命的双向运转节能齿接糊盒机带。本发明制备的具有高使用寿命的双向运转节能齿接糊盒机带具备优良的力学性能,使用寿命长。(The invention discloses a bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life and a manufacturing method thereof, and relates to the technical field of conveying materials. According to the invention, raw carboxyl nitrile rubber is used as a raw material, white carbon black, rubber oil, a vulcanization assistant, an antistatic agent and a vulcanizing agent are added to prepare a friction layer raw material, then lactic acid and four-arm star-shaped polyethylene glycol are polymerized under the action of an initiator to prepare modified polylactic acid, the modified polylactic acid and nitrile rubber are mixed and banburied and are mixed with acetone to prepare a modified adhesive, and finally the modified adhesive is coated on two sides of a framework layer prepared from nylon 12 and is attached to the friction layer raw material, and hot pressing is carried out after irradiation to prepare the bidirectional-running energy-saving tooth-joint box pasting machine belt with long service life. The bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life prepared by the invention has excellent mechanical property and long service life.)

1. The bidirectional-operation energy-saving tooth box pasting machine belt with the long service life is characterized by mainly comprising the following raw material components in parts by weight: 20-30 parts of an upper friction layer, 10-20 parts of a first bonding layer, 30-40 parts of a framework layer, 10-20 parts of a second bonding layer and 15-30 parts of a lower friction layer;

the first bonding layer and the second bonding layer are prepared by coating and drying the same modified adhesive; the modified adhesive is prepared from acetone, nitrile rubber and modified polylactic acid.

2. The belt of claim 1, wherein the upper and lower friction layers are made by mixing and vulcanizing carboxylated nitrile rubber raw rubber with a reinforcing agent, rubber oil, an antistatic agent, a vulcanizing assistant, a rubber protective agent and a vulcanizing agent.

3. The energy efficient double direction running tooth belt of claim 2, wherein the carcass layer is woven from nylon 12.

4. The energy-saving tooth paste box machine belt with high service life and two-way operation as claimed in claim 3, wherein the modified polylactic acid is prepared from lactic acid and four-arm star polyethylene glycol under the catalysis of stannous octoate to prepare pentanediol.

5. The belt of claim 4, wherein the belt comprises the following components in parts by weight: 20 parts of an upper friction layer, 15 parts of a first adhesive layer, 35 parts of a carcass layer, 15 parts of a second adhesive layer and 20 parts of a lower friction layer.

6. The preparation method of the bidirectional-operation energy-saving tooth box pasting machine belt with long service life is characterized by mainly comprising the following steps:

(1) mixing lactic acid and four-arm star-shaped polyethylene glycol, adding stannous octoate, stirring and reacting to obtain a modified polylactic acid blank, dissolving the modified polylactic acid blank with dichloromethane, and precipitating with glacial ethyl ether to obtain modified polylactic acid;

(2) mixing and banburying nitrile rubber and modified polylactic acid, adding acetone, stirring and mixing to obtain a modified adhesive;

(3) placing raw carboxyl nitrile rubber into an internal mixer, carrying out internal mixing for 1min, adding the reinforcing agent white carbon black, continuing the internal mixing for 2min, adding rubber oil, an antistatic agent, a vulcanization aid and a rubber protective agent, continuing the internal mixing, and discharging the mixture out of the internal mixer when the temperature reaches 120 ℃ to prepare a rubber compound; cooling the rubber compound at room temperature, placing the rubber compound in an open mill for thin passing when the rubber compound is cooled to 60 ℃, adding a vulcanizing agent, placing rubber in the open mill, then placing the rubber in a calender, calendering the rubber on nylon lining cloth into a rubber sheet with the thickness of 0.5-0.8 mm, and rolling the rubber sheet for later use to obtain a friction layer raw material;

(4) manufacturing nylon 12 into fabric to obtain a framework layer, coating the modified adhesive obtained in the step (2) on two sides of the framework layer, attaching the friction layer raw materials obtained in the step (3) on two sides of the framework layer coated with the modified adhesive, and performing hot press molding after irradiation to obtain the bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life.

7. The method of claim 6, wherein the method of making a long life energy efficient, bi-directional toothed belt comprises the steps of:

(1) mixing lactic acid and four-arm star-shaped polyethylene glycol in a three-neck flask according to a mass ratio of 9:11, adding stannous octoate with the mass 0.01 times that of the lactic acid into the three-neck flask, stirring and reacting at 120 ℃ under the pressure of 10kPa for 20min, heating to 165 ℃ at a heating rate of 5 ℃/min, polymerizing at 165 ℃ for 9h at constant temperature to obtain a modified polylactic acid blank, dissolving the modified polylactic acid blank with dichloromethane, and precipitating with glacial ethyl ether to obtain modified polylactic acid;

(2) mixing nitrile rubber and modified polylactic acid in a mass ratio of 8: 1-10: 1 in an internal mixer, carrying out mixing and banburying at 80-120 ℃ for 5-15 min to obtain a modified adhesive blank, mixing the modified adhesive blank and acetone in a mass ratio of 1: 2-1: 4, and stirring and mixing at 55 ℃ for 30-40 min to obtain a modified adhesive;

(3) weighing 50-60 parts of carboxyl nitrile rubber, 2-4 parts of reinforcing agent white carbon black, 1-3 parts of rubber oil, 2-4 parts of antistatic agent, 3-6 parts of vulcanization aid, 1-4 parts of rubber protective agent and 5-12 parts of sulfur in sequence according to parts by weight, placing raw carboxyl nitrile rubber into an internal mixer, carrying out internal mixing for 1min at the temperature of 70-80 ℃, adding the reinforcing agent white carbon black, continuing the internal mixing for 2min, adding the rubber oil, the antistatic agent, the vulcanization aid and the rubber protective agent, continuing the internal mixing, discharging the internal mixer when the temperature reaches 120 ℃, and preparing mixed rubber; cooling the rubber compound at room temperature, placing the rubber compound in an open mill for thin passing when the rubber compound is cooled to 60 ℃, adding sulfur, placing rubber in the open mill, then placing the rubber in a calender, calendering the rubber on nylon lining cloth into a rubber sheet with the thickness of 0.5-0.8 mm, and rolling the rubber sheet for later use to prepare a friction layer raw material;

(4) the nylon 12 is manufactured into a nylon with a thickness of 0.8 to 1.2mm and a gram weight of 80 to 200g/m²Obtaining a framework layer, and adding 1-3 g/cm of the modified adhesive obtained in the step (2)²The coating amount of the friction layer is coated on two sides of the framework layer, the friction layer raw material obtained in the step (3) with the mass of 1.1-1.3 times of that of the framework layer is uniformly divided into two parts which are respectively attached to two sides of the framework layer coated with the modified adhesive, and after the gamma-ray irradiation is carried out for 100-300 kGy, the friction layer raw material is subjected to hot press forming, so that the bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life is obtained.

8. The method for preparing the bidirectional-operation energy-saving tooth paste box machine belt with long service life according to claim 6, wherein the conditions of the hot press forming in the step (4) are 155 ℃ of temperature, 15MPa of pressure and 25min of time.

Technical Field

The invention relates to the technical field of conveying materials, in particular to a bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life and a manufacturing method thereof.

Background

The conveyer is a kind of machinery of material transmission, and the main transport mode of present bulk material is belt conveyor, and at present in the industrial transportation transmission field, the conveyer belt that uses, its skeleton material is mostly polyamide (nylon) sheet, has the shortcoming such as area body hardness height, wheel footpath is big, tension deformation is great, and conventional polyamide area comprises five layers, from top to bottom in proper order: the invention uses nylon 12 high polymer to replace polyamide nylon skeleton, so that the polyester belt has small tension change, more stable size and shape, and uses the enhanced high-strength fabric crop connecting layer to ensure the integral strength of the belt body. Therefore, we propose a two-way running energy-saving tooth-joint box pasting machine belt with long service life and a guiding method thereof.

Disclosure of Invention

The invention aims to provide a bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life and a manufacturing method thereof, so as to solve the problems in the prior art.

The bidirectional-operation energy-saving tooth box pasting machine belt with the long service life is characterized by mainly comprising the following raw material components in parts by weight: 20-30 parts of an upper friction layer, 10-20 parts of a first bonding layer, 30-40 parts of a framework layer, 10-20 parts of a second bonding layer and 15-30 parts of a lower friction layer;

the first bonding layer and the second bonding layer are prepared by coating and drying the same modified adhesive; the modified adhesive is prepared from acetone, nitrile rubber and modified polylactic acid.

Preferably, the upper friction layer and the lower friction layer are prepared by mixing and vulcanizing carboxyl nitrile rubber raw rubber, a reinforcing agent, rubber oil, an antistatic agent, a vulcanizing aid, a rubber protective agent and a vulcanizing agent.

Preferably, the framework layer is woven by nylon 12.

Preferably, the modified polylactic acid is obtained by preparing pentanediol from lactic acid and four-arm star-shaped polyethylene glycol under the catalysis of stannous octoate.

As optimization, the bidirectional-operation energy-saving tooth box pasting machine belt with the long service life mainly comprises the following raw material components in parts by weight: 20 parts of an upper friction layer, 15 parts of a first adhesive layer, 35 parts of a carcass layer, 15 parts of a second adhesive layer and 20 parts of a lower friction layer.

A preparation method of a bidirectional-operation energy-saving tooth box pasting machine belt with long service life mainly comprises the following steps:

(1) mixing lactic acid and four-arm star-shaped polyethylene glycol, adding stannous octoate, stirring and reacting to obtain a modified polylactic acid blank, dissolving the modified polylactic acid blank with dichloromethane, and precipitating with glacial ethyl ether to obtain modified polylactic acid;

(2) mixing and banburying nitrile rubber and modified polylactic acid, adding acetone, stirring and mixing to obtain a modified adhesive;

(3) placing raw carboxyl nitrile rubber into an internal mixer, carrying out internal mixing for 1min, adding the reinforcing agent white carbon black, continuing the internal mixing for 2min, adding rubber oil, an antistatic agent, a vulcanization aid and a rubber protective agent, continuing the internal mixing, and discharging the mixture out of the internal mixer when the temperature reaches 120 ℃ to prepare a rubber compound; cooling the rubber compound at room temperature, placing the rubber compound in an open mill for thin passing when the rubber compound is cooled to 60 ℃, adding a vulcanizing agent, placing rubber in the open mill, then placing the rubber in a calender, calendering the rubber on nylon lining cloth into a rubber sheet with the thickness of 0.5-0.8 mm, and rolling the rubber sheet for later use to obtain a friction layer raw material;

(4) manufacturing nylon 12 into fabric to obtain a framework layer, coating the modified adhesive obtained in the step (2) on two sides of the framework layer, attaching the friction layer raw materials obtained in the step (3) on two sides of the framework layer coated with the modified adhesive, and performing hot press molding after irradiation to obtain the bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life.

As optimization, the preparation method of the bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life mainly comprises the following steps:

(1) mixing lactic acid and four-arm star-shaped polyethylene glycol in a three-neck flask according to a mass ratio of 9:11, adding stannous octoate with the mass 0.01 times that of the lactic acid into the three-neck flask, stirring and reacting at 120 ℃ under the pressure of 10kPa for 20min, heating to 165 ℃ at a heating rate of 5 ℃/min, polymerizing at 165 ℃ for 9h at constant temperature to obtain a modified polylactic acid blank, dissolving the modified polylactic acid blank with dichloromethane, and precipitating with glacial ethyl ether to obtain modified polylactic acid;

(2) mixing nitrile rubber and modified polylactic acid in a mass ratio of 8: 1-10: 1 in an internal mixer, carrying out mixing and banburying at 80-120 ℃ for 5-15 min to obtain a modified adhesive blank, mixing the modified adhesive blank and acetone in a mass ratio of 1: 2-1: 4, and stirring and mixing at 55 ℃ for 30-40 min to obtain a modified adhesive;

(3) weighing 50-60 parts of carboxyl nitrile rubber, 2-4 parts of reinforcing agent white carbon black, 1-3 parts of rubber oil, 2-4 parts of antistatic agent, 3-6 parts of vulcanization aid, 1-4 parts of rubber protective agent and 5-12 parts of sulfur in sequence according to parts by weight, placing raw carboxyl nitrile rubber into an internal mixer, carrying out internal mixing for 1min at the temperature of 70-80 ℃, adding the reinforcing agent white carbon black, continuing the internal mixing for 2min, adding the rubber oil, the antistatic agent, the vulcanization aid and the rubber protective agent, continuing the internal mixing, discharging the internal mixer when the temperature reaches 120 ℃, and preparing mixed rubber; cooling the rubber compound at room temperature, placing the rubber compound in an open mill for thin passing when the rubber compound is cooled to 60 ℃, adding sulfur, placing rubber in the open mill, then placing the rubber in a calender, calendering the rubber on nylon lining cloth into a rubber sheet with the thickness of 0.5-0.8 mm, and rolling the rubber sheet for later use to prepare a friction layer raw material;

(4) the nylon 12 is manufactured into a nylon with a thickness of 0.8 to 1.2mm and a gram weight of 80 to 200g/m²Obtaining a framework layer, and adding 1-3 g/cm of the modified adhesive obtained in the step (2)²The coating amount of the friction layer is coated on two sides of the framework layer, the friction layer raw material obtained in the step (3) with the mass of 1.1-1.3 times of that of the framework layer is uniformly divided into two parts which are respectively attached to two sides of the framework layer coated with the modified adhesive, and after the gamma-ray irradiation is carried out for 100-300 kGy, the friction layer raw material is subjected to hot press forming, so that the bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life is obtained.

And (4) as optimization, the hot press molding conditions in the step (4) are that the temperature is 155 ℃, the pressure is 15MPa, and the time is 25 min.

Compared with the prior art, the invention has the beneficial effects that:

the modified adhesive is used when the bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life is prepared.

Firstly, the modified adhesive contains modified polylactic acid, the molecular chain of the polylactic acid is in a six-arm star structure after the polylactic acid is modified, after the modified adhesive is added, the molecular bonding strength among rubber molecular chains in the adhesive can be improved, therefore, after the product is prepared, the strength of the product can be improved, thereby prolonging the service life of the product, secondly, polyethylene glycol is used for modifying the polylactic acid in the preparation process of the modified polylactic acid, after modification, the polylactic acid has better affinity with rubber, therefore, the modified adhesive can be further distributed in the modified adhesive, thereby further improving the strength and the service life of the product, and moreover, before the hot pressing treatment for preparing the product, irradiation treatment is firstly carried out, polylactic acid molecules in the modified polylactic acid can be grafted on the nylon surface after the irradiation treatment, thereby improving the bonding strength between the framework layer and the friction layer and further prolonging the service life of the product.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The method provided by the present invention is illustrated in detail by the following examples for the purpose of more clearly showing that the index test methods of the papermaking power transmission belt having ultra-soft high flatness prepared in the following examples are as follows:

tensile breaking strength: the tensile breaking strength and 1% elongation strength of the two-way running energy-saving tooth box pasting machine belt with long service life obtained in each example and a comparative product are measured by a universal tensile tester.

Example 1

A bidirectional operation energy-saving tooth box pasting machine belt with long service life mainly comprises the following components in parts by weight: 20 parts of an upper friction layer, 15 parts of a first adhesive layer, 35 parts of a carcass layer, 15 parts of a second adhesive layer and 20 parts of a lower friction layer.

The preparation method of the bidirectional-operation energy-saving tooth box pasting machine belt with the long service life mainly comprises the following steps:

(1) mixing lactic acid and four-arm star-shaped polyethylene glycol in a three-neck flask according to a mass ratio of 9:11, adding stannous octoate with the mass 0.01 times that of the lactic acid into the three-neck flask, stirring and reacting at 120 ℃ under the pressure of 10kPa for 20min, heating to 165 ℃ at a heating rate of 5 ℃/min, polymerizing at 165 ℃ for 9h at constant temperature to obtain a modified polylactic acid blank, dissolving the modified polylactic acid blank with dichloromethane, and precipitating with glacial ethyl ether to obtain modified polylactic acid;

(2) mixing nitrile rubber and modified polylactic acid in a mass ratio of 8:1 in an internal mixer, carrying out mixing and banburying at 80 ℃ for 10min to obtain a modified adhesive blank, mixing the modified adhesive blank and acetone in a mass ratio of 1:3, and carrying out stirring and mixing at 55 ℃ for 30min to obtain a modified adhesive;

(3) weighing 60 parts of carboxyl nitrile rubber, 4 parts of reinforcing agent white carbon black, 3 parts of rubber oil, 4 parts of antistatic agent, 4 parts of vulcanization aid, 3 parts of rubber protective agent and 12 parts of sulfur in sequence, placing raw carboxyl nitrile rubber into an internal mixer, internally mixing for 1min at the temperature of 70-80 ℃, adding the reinforcing agent white carbon black, continuously internally mixing for 2min, adding the rubber oil, the antistatic agent, the vulcanization aid and the rubber protective agent, continuously internally mixing, discharging the internal mixer when the temperature reaches 120 ℃, and preparing mixed rubber; cooling the rubber compound at room temperature, placing the rubber compound in an open mill for thin passing when the rubber compound is cooled to 60 ℃, adding sulfur, placing rubber in the open mill, then placing the rubber compound in a calender, calendering the rubber compound on nylon lining cloth into a rubber sheet with the thickness of 0.6mm, and rolling the rubber sheet for later use to obtain a friction layer raw material;

(4) the nylon 12 is manufactured into a nylon product with the thickness of 1mm and the gram weight of 95g/m²Obtaining a framework layer, and adding 1-3 g/cm of the modified adhesive obtained in the step (2)²The coating amount of the friction layer is coated on two sides of the framework layer, the friction layer raw material obtained in the step (3) with the mass 1.15 times of that of the framework layer is uniformly divided into two parts which are respectively attached to two sides of the framework layer coated with the modified adhesive, and after gamma-ray irradiation of 120kGy, hot press molding is carried out, so that the bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life is obtained.

And (4) as optimization, the hot press molding conditions in the step (4) are that the temperature is 155 ℃, the pressure is 15MPa, and the time is 25 min.

Example 2

A bidirectional operation energy-saving tooth box pasting machine belt with long service life mainly comprises the following components in parts by weight: 20 parts of an upper friction layer, 15 parts of a first adhesive layer, 35 parts of a carcass layer, 15 parts of a second adhesive layer and 20 parts of a lower friction layer.

The preparation method of the bidirectional-operation energy-saving tooth box pasting machine belt with the long service life mainly comprises the following steps:

(1) mixing lactic acid and polyethylene glycol in a three-neck flask according to a mass ratio of 9:11, adding stannous octoate with the mass of 0.01 time that of the lactic acid into the three-neck flask, stirring and reacting at 120 ℃ under the pressure of 10kPa for 20min, heating to 165 ℃ at a heating rate of 5 ℃/min, polymerizing at 165 ℃ for 9h at constant temperature to obtain a modified polylactic acid blank, dissolving the modified polylactic acid blank with dichloromethane, and precipitating with glacial ethyl ether to obtain modified polylactic acid;

(2) mixing nitrile rubber and modified polylactic acid in a mass ratio of 8:1 in an internal mixer, carrying out mixing and banburying at 80 ℃ for 10min to obtain a modified adhesive blank, mixing the modified adhesive blank and acetone in a mass ratio of 1:3, and carrying out stirring and mixing at 55 ℃ for 30min to obtain a modified adhesive;

(3) weighing 60 parts of carboxyl nitrile rubber, 4 parts of reinforcing agent white carbon black, 3 parts of rubber oil, 4 parts of antistatic agent, 4 parts of vulcanization aid, 3 parts of rubber protective agent and 12 parts of sulfur in sequence, placing raw carboxyl nitrile rubber into an internal mixer, internally mixing for 1min at the temperature of 70-80 ℃, adding the reinforcing agent white carbon black, continuously internally mixing for 2min, adding the rubber oil, the antistatic agent, the vulcanization aid and the rubber protective agent, continuously internally mixing, discharging the internal mixer when the temperature reaches 120 ℃, and preparing mixed rubber; cooling the rubber compound at room temperature, placing the rubber compound in an open mill for thin passing when the rubber compound is cooled to 60 ℃, adding sulfur, placing rubber in the open mill, then placing the rubber compound in a calender, calendering the rubber compound on nylon lining cloth into a rubber sheet with the thickness of 0.6mm, and rolling the rubber sheet for later use to obtain a friction layer raw material;

(4) the nylon 12 is manufactured into a nylon product with the thickness of 1mm and the gram weight of 95g/m²Obtaining a framework layer, and adding 1-3 g/cm of the modified adhesive obtained in the step (2)²The coating amount of (3) is coated on two sides of the framework layer, and the friction layer raw material obtained in the step (3) with the mass of 1.15 times of that of the framework layer is uniformly divided into two parts which are respectively attached to the coatingAfter 120kGy of gamma-ray irradiation is carried out on two sides of the framework layer coated with the modified adhesive, hot press molding is carried out, and the bidirectional-operation energy-saving tooth-connected box pasting machine belt with long service life is obtained.

And (4) as optimization, the hot press molding conditions in the step (4) are that the temperature is 155 ℃, the pressure is 15MPa, and the time is 25 min.

Example 3

A bidirectional operation energy-saving tooth box pasting machine belt with long service life mainly comprises the following components in parts by weight: 20 parts of an upper friction layer, 15 parts of a first adhesive layer, 35 parts of a carcass layer, 15 parts of a second adhesive layer and 20 parts of a lower friction layer.

The preparation method of the bidirectional-operation energy-saving tooth box pasting machine belt with the long service life mainly comprises the following steps:

(1) mixing lactic acid and four-arm star-shaped polyethylene glycol in a three-neck flask according to a mass ratio of 9:11, adding stannous octoate with the mass 0.01 times that of the lactic acid into the three-neck flask, stirring and reacting at 120 ℃ under the pressure of 10kPa for 20min, heating to 165 ℃ at a heating rate of 5 ℃/min, polymerizing at 165 ℃ for 9h at constant temperature to obtain a modified polylactic acid blank, dissolving the modified polylactic acid blank with dichloromethane, and precipitating with glacial ethyl ether to obtain modified polylactic acid;

(2) mixing nitrile rubber and modified polylactic acid in a mass ratio of 8:1 in an internal mixer, carrying out mixing and banburying at 80 ℃ for 10min to obtain a modified adhesive blank, mixing the modified adhesive blank and acetone in a mass ratio of 1:3, and carrying out stirring and mixing at 55 ℃ for 30min to obtain a modified adhesive;

(3) weighing 60 parts of carboxyl nitrile rubber, 4 parts of reinforcing agent white carbon black, 3 parts of rubber oil, 4 parts of antistatic agent, 4 parts of vulcanization aid, 3 parts of rubber protective agent and 12 parts of sulfur in sequence, placing raw carboxyl nitrile rubber into an internal mixer, internally mixing for 1min at the temperature of 70-80 ℃, adding the reinforcing agent white carbon black, continuously internally mixing for 2min, adding the rubber oil, the antistatic agent, the vulcanization aid and the rubber protective agent, continuously internally mixing, discharging the internal mixer when the temperature reaches 120 ℃, and preparing mixed rubber; cooling the rubber compound at room temperature, placing the rubber compound in an open mill for thin passing when the rubber compound is cooled to 60 ℃, adding sulfur, placing rubber in the open mill, then placing the rubber compound in a calender, calendering the rubber compound on nylon lining cloth into a rubber sheet with the thickness of 0.6mm, and rolling the rubber sheet for later use to obtain a friction layer raw material;

(4) the nylon 12 is manufactured into a nylon product with the thickness of 1mm and the gram weight of 95g/m²Obtaining a framework layer, and adding 1-3 g/cm of the modified adhesive obtained in the step (2)²The coating amount of the friction layer is coated on two sides of the framework layer, the friction layer raw material obtained in the step (3) with the mass 1.15 times of that of the framework layer is uniformly divided into two parts which are respectively attached to the two sides of the framework layer coated with the modified adhesive, and after hot press molding, the bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life is obtained.

And (4) as optimization, the hot press molding conditions in the step (4) are that the temperature is 155 ℃, the pressure is 15MPa, and the time is 25 min.

Comparative example

A bidirectional operation energy-saving tooth box pasting machine belt with long service life mainly comprises the following components in parts by weight: 20 parts of an upper friction layer, 15 parts of a first adhesive layer, 35 parts of a carcass layer, 15 parts of a second adhesive layer and 20 parts of a lower friction layer.

The preparation method of the bidirectional-operation energy-saving tooth box pasting machine belt with the long service life mainly comprises the following steps:

(1) mixing lactic acid and polyethylene glycol in a three-neck flask according to a mass ratio of 9:11, adding stannous octoate with the mass of 0.01 time that of the lactic acid into the three-neck flask, stirring and reacting at 120 ℃ under the pressure of 10kPa for 20min, heating to 165 ℃ at a heating rate of 5 ℃/min, polymerizing at 165 ℃ for 9h at constant temperature to obtain a modified polylactic acid blank, dissolving the modified polylactic acid blank with dichloromethane, and precipitating with glacial ethyl ether to obtain modified polylactic acid;

(2) mixing nitrile rubber and modified polylactic acid in a mass ratio of 8:1 in an internal mixer, carrying out mixing and banburying at 80 ℃ for 10min to obtain a modified adhesive blank, mixing the modified adhesive blank and acetone in a mass ratio of 1:3, and carrying out stirring and mixing at 55 ℃ for 30min to obtain a modified adhesive;

(3) weighing 60 parts of carboxyl nitrile rubber, 4 parts of reinforcing agent white carbon black, 3 parts of rubber oil, 4 parts of antistatic agent, 4 parts of vulcanization aid, 3 parts of rubber protective agent and 12 parts of sulfur in sequence, placing raw carboxyl nitrile rubber into an internal mixer, internally mixing for 1min at the temperature of 70-80 ℃, adding the reinforcing agent white carbon black, continuously internally mixing for 2min, adding the rubber oil, the antistatic agent, the vulcanization aid and the rubber protective agent, continuously internally mixing, discharging the internal mixer when the temperature reaches 120 ℃, and preparing mixed rubber; cooling the rubber compound at room temperature, placing the rubber compound in an open mill for thin passing when the rubber compound is cooled to 60 ℃, adding sulfur, placing rubber in the open mill, then placing the rubber compound in a calender, calendering the rubber compound on nylon lining cloth into a rubber sheet with the thickness of 0.6mm, and rolling the rubber sheet for later use to obtain a friction layer raw material;

(4) the nylon 12 is manufactured into a nylon product with the thickness of 1mm and the gram weight of 95g/m²Obtaining a framework layer, and adding 1-3 g/cm of the modified adhesive obtained in the step (2)²The coating amount of the friction layer is coated on two sides of the framework layer, the friction layer raw material obtained in the step (3) with the mass 1.15 times of that of the framework layer is uniformly divided into two parts which are respectively attached to the two sides of the framework layer coated with the modified adhesive, and after hot press molding, the bidirectional-operation energy-saving tooth-joint box pasting machine belt with long service life is obtained.

And (4) as optimization, the hot press molding conditions in the step (4) are that the temperature is 155 ℃, the pressure is 15MPa, and the time is 25 min.

Examples of effects

Table 1 below shows the results of performance analysis of the two-way running energy-saving tooth-joint box pasting machine belt having a long service life obtained by using examples 1 to 3 of the present invention and comparative example.

TABLE 1

From the comparison of the experimental data of example 1 and the comparative example in table 1, it can be found that the preparation of the adhesive layer by using the modified adhesive can effectively improve the strength of the product when the bidirectional running energy-saving tooth-jointed box pasting machine belt with long service life is used, and further, the service life of the product is prolonged.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.