阅读说明：本技术 防白变型鞋面布与围条橡胶的高效粘合物及其制作方法与应用 (Efficient adhesive for anti-white-deformation vamp cloth and foxing rubber and manufacturing method and application thereof ) 是由 晋齐怀 田吉 张世林 杨小飞 毛昌虎 王春桥 廖浦江 于 2021-10-12 设计创作，主要内容包括：本发明公开了一种防白变型鞋面布与围条橡胶的高效粘合物及其制作方法与应用,其特征在于：该粘合体系由三部份组成,即在鞋鞋帮面布表面粘合部位涂刷含有5份固化剂及3份5％羧甲基纤维素钠水溶胀体的粘合剂FB050(100份),于温度40-50℃的热循环空气条件下干燥45分钟。同期于围条橡胶粘合表面刷SCR5天然橡胶制作的高粘性汽油胶浆并且干燥25-30分钟。将刷浆干燥的围条粘合在刷浆后干燥良好的鞋帮表面,压合1-1.5秒。然后于115℃X40minX0.38MPa条件下热空气硫化40分钟得胶鞋成品。本工艺所得胶鞋的围条橡胶与空变丝鞋面布的粘合强度可以达到4.0KN/m以上,大幅度提高了胶鞋穿用寿命,同时粘合体在胶鞋存放过程中不会产生表面喷粉变白现象。(The invention discloses a high-efficiency adhesive of anti-white-deformation vamp cloth and foxing rubber as well as a manufacturing method and application thereof, and is characterized in that: the adhesive system consists of three parts, namely coating adhesive FB050(100 parts) containing 5 parts of curing agent and 3 parts of 5% sodium carboxymethylcellulose water swelling body on the surface of the upper fabric of the shoe, and drying for 45 minutes under the condition of hot circulating air at the temperature of 40-50 ℃. And brushing high-viscosity gasoline mucilage made of SCR5 natural rubber on the bonding surface of the foxing rubber and drying for 25-30 minutes. And adhering the battered and dried foxing strip on the surface of the dried shoe upper after the battered, and pressing for 1-1.5 seconds. Then hot air vulcanization is carried out for 40 minutes under the condition of 115 ℃ X40minX0.38MPa to obtain the finished rubber shoe. The bonding strength of the foxing rubber and the air-jet textured yarn vamp fabric of the rubber shoe obtained by the process can reach more than 4.0KN/m, the service life of the rubber shoe is greatly prolonged, and the phenomenon that the surface of an adherend is sprayed with powder and becomes white in the storage process of the rubber shoe is avoided.)

1. The utility model provides an efficient adhesive of anti-white shoe upper cloth and foxing rubber which characterized in that: the bonding system consists of two upper cloth cover bonding layers and a surrounding strip bonding surface tackifying layer; the upper surface bonding layer is of a single-layer structure, the upper surface bonding layer comprises sodium carboxymethyl cellulose containing a curing agent EN800 as a thickening body, and the thickening body and an adhesive FB050 are mixed to be used as the upper surface bonding layer for rubber bonding; the adhesion layer of the rubber surrounding strip for shoes is high-viscosity gasoline mucilage made of SCR5 natural rubber.

2. The high-efficiency adhesive of the white-deformation-preventing vamp cloth and the foxing rubber as claimed in claim 1, wherein: the addition amount of the curing agent EN800 is 5 percent of the total mass of the adhesive FB 050; the sodium carboxymethylcellulose is a 5% sodium carboxymethylcellulose water-soluble swelling body as a thickening body, and the dosage of the thickening body is 3% of the total dosage of FB 050.

3. The high-efficiency adhesive of the white-deformation-preventing vamp cloth and the foxing rubber as claimed in claim 1, wherein: the high-viscosity gasoline mucilage prepared from the SCR5 natural rubber comprises, by mass, 100 parts of SCR5 natural rubber, 1.8-2.2 parts of sulfur, 2.6-3.0 parts of vulcanization accelerator, 8-9 parts of zinc oxide, 1-2 parts of stearic acid, 1.6-2.8 parts of white carbon black, 2.2-2.8 parts of polyethylene glycol 4000, 4.0-5.0 parts of tackifying resin, 1.0-1.4 parts of anti-aging agent KY-405L and 500 parts of 120# gasoline 480-plus.

4. The high-efficiency adhesive of the white-deformation-preventing vamp cloth and the foxing rubber as claimed in claim 3, wherein: the high-viscosity gasoline mucilage prepared from the SCR5 natural rubber comprises, by mass, 100 parts of SCR5 natural rubber, 2.0 parts of sulfur, 2.8 parts of a vulcanization accelerator, 8.5 parts of zinc oxide, 1.5 parts of stearic acid, 2.2 parts of white carbon black, 2.5 parts of polyethylene glycol 4000#, 4.5 parts of tackifying resin, 1.2 parts of an anti-aging agent KY-405L and 490 parts of 120# gasoline.

5. The high-efficiency adhesive of the white-deformation-preventing upper cloth and the foxing rubber as claimed in claim 3 or 4, wherein: every 3.8 parts of accelerator consists of 0.7 part of accelerator M, 1.3 parts of accelerator DM and 1.8 parts of accelerator DS; the tackifying resin is a flavorless tackifying resin DT-100.

6. The high-efficiency adhesive of the white-deformation-preventing upper cloth and the foxing rubber as claimed in claim 3 or 4, wherein: the preparation method of the high-viscosity gasoline mucilage prepared from the SCR5 natural rubber comprises the following steps:

(1) preparing a gasoline rubber cement compound: the SCR5 natural rubber is pressed and refined in an internal mixer at the rubber refining temperature of 80-90 ℃ for 8-12 minutes, the discharged material is rolled and refined smoothly on an open rubber refining machine, then the sheet is beaten and placed for 1-2 hours, then the open rubber refining machine is used for drawing 5 times through the machine under the conditions that the roller spacing is 0.1-0.2mm and the temperature is 35-45, and the sheet is rolled and refined smoothly on an open mill at the roller spacing of 4-5mm to obtain the SCR5 natural rubber plasticated rubber; the Wei's plasticity of the SCR5 natural rubber plasticated rubber is 0.65-0.70;

(2) preparing materials: mixing a vulcanization accelerator, a vulcanization activator, polyethylene glycol 4000#, and an anti-aging agent KY-405L to obtain a product A, and mixing tackifying resin and white carbon black to obtain a product B;

(3) preparing a rubber compound: coating SCR5 natural rubber plasticated rubber on an open rubber mixing mill at the roller spacing of 4-5mm and the roller temperature of 40-50 ℃, adding a material B, turning until a rubber sheet is smooth, adding a material A into the rubber mixing mill, continuously refining, turning for 7-8 times by a left and right open knife after powder is completely eaten, allowing all the powder to enter a colloid, and taking out the rubber sheet from the rubber mixing mill at the roller spacing of 5-6mm for cooling to obtain high-viscosity rubber layer rubber compound;

(4) preparing rubber cement paste:

(a) slicing: cutting the rubber compound into small rubber sheets with the length of 8-12cm and the width of 5-6 cm;

(b) sulfur soaking treatment: immersing sulfur into 5 parts of No. 120 gasoline, stirring uniformly and storing for later use;

(c) stirring the mucilage: adding the small pieces of mixed rubber sheets and 150 parts of No. 120 gasoline into a rubber slurry stirrer, and stirring the rubber sheets until the mixed rubber is dispersed in the gasoline to form uniform rubber slurry; adding 80 parts of gasoline into the rubber body for three times respectively, stirring the gasoline into the fed rubber body each time, and continuing adding the gasoline until all the added gasoline is dissolved into the rubber body to form uniform slurry; the stirring time is about 4.5-5 hours.

(d) Adding sulfur: opening the mucilage mixer to cool the water, cooling for half an hour, starting the mucilage mixer when the temperature of the mucilage is reduced to be below 80 ℃, adding the soaked sulfur and the gasoline for soaking into the mixer, and then cleaning the sulfur powder with the residual gasoline to enter the mixer; and (3) continuing stirring for half an hour, detecting by using a Bowman-simulated densitometer with the weight of 108 g and the measurement stroke of 100mm to obtain the mucilage concentration of 1-1.5 seconds, taking the unit second of time spent in the measurement stroke when the densitometer is freely immersed in the mucilage as the mucilage concentration, and discharging the mucilage into a mucilage barrel from a stirrer to obtain the high-viscosity gasoline mucilage.

7. The efficient adhesion of the white-discoloration-preventing upper cloth to the foxing rubber as claimed in claim 6, wherein: and (3) verifying the qualification of the mixed rubber obtained in the step (3), adding 1g of sulfur into 52g of mixed rubber, uniformly mixing, detecting that the vulcanization starting point of the rubber material is 1 ' 40-2 ' 10 ' under the conditions of 143 ℃ and 20MPa, and using the index of the vulcanization starting point of the mixed rubber for the rubber cement stirring process, wherein the index of the vulcanization starting point of the mixed rubber is qualified.

8. The efficient adhesion of the white-discoloration-preventing upper cloth to the foxing rubber as claimed in claim 6, wherein: detecting the high-viscosity gasoline mucilage obtained in the step (e), coating 1-2g of the high-viscosity gasoline mucilage on a stainless steel sheet with the thickness of 1.5mm, placing the stainless steel sheet in a hot air drying oven with the temperature of 143 ℃ for baking for 35 minutes, and checking the vulcanization degree and the color of vulcanized rubber; and (4) the rubber cement body is normally vulcanized, and the color meets the requirement, so that the rubber cement body is qualified.

9. The high-efficiency adhesive of the white-deformation-preventing vamp cloth and the foxing rubber as claimed in claim 1, wherein: the specific preparation method of the 5% sodium carboxymethylcellulose water-soluble dilatant comprises the steps of adding the 5 parts sodium carboxymethylcellulose into 95 parts of hot distilled water at the temperature of 80-90 ℃ in a powdery state, adding the 5 parts sodium carboxymethylcellulose under stirring, and stirring to obtain a transparent viscous body to obtain the sodium carboxymethylcellulose water-soluble dilatant.

10. The method for using the high-efficiency adhesive of the white-deformation-preventing upper cloth and the foxing rubber as claimed in claim 1, is characterized in that:

(1) the upper surface brushing slurry process comprises the following steps: coating an upper surface bonding layer on a film bonding part of the upper surface of the heat vulcanized rubber shoe, and then drying for 32-36 minutes under the condition of a heat circulation air drying box with the drying temperature of 45-50 ℃ to obtain a dried slurry brushing upper semi-finished product;

(2) tackification treatment of rubber binding surfaces of rubber shoe surrounding strips: brushing high-viscosity gasoline mucilage with the thickness of 0.1-0.2mm on the bonding surface of the heat-vulcanized rubber shoe foxing, and drying at room temperature for 25-30 minutes to obtain the brushed rubber foxing.

(3) Bonding: bonding the bonding surface of the brushing paste surrounding strip on the bonding surface of the dried brushing paste upper semi-finished product, and pressing for 1-1.5 seconds under the pressure of 0.38MPa to obtain a semi-finished rubber shoe;

(4) vulcanizing the rubber shoes: and putting the semi-finished rubber shoes into a rubber shoe vulcanizing tank with the temperature of 115 ℃ and the hot air pressure of 0.38MPa, and carrying out heat preservation and pressure maintaining vulcanization for 40 minutes to obtain the finished rubber shoes.

Technical Field

The invention relates to the technical field of adhesive application, in particular to an efficient adhesive of anti-white-deformation vamp cloth and foxing rubber, and a manufacturing method and application thereof.

Background

The hot vulcanized rubber upper surface adhesive mainly adopts two systems, one is a solvent type rubber cement system, and the other is a water-based rubber cement system. For the air textured yarn vamp cloth used for the hot vulcanization rubber shoes, the rubber slurry excessively permeates the cloth fibers due to the thick texture, so that the rubber slurry forms a winding attachment layer on the surfaces of the cloth fibers too thin, and therefore effective adhesion cannot be formed, and the development field of rubber shoe products is limited.

When the two systems are used, the color of the natural color rubber paste is yellow and discolored due to the vulcanization temperature of the rubber shoes, the coloring treatment is carried out according to different upper surfaces, the physical winding adsorption of the rubber paste and the upper fabric is poor, the bonding strength of the upper surface and the surrounding strip of the rubber shoes formed by the bonding scheme is 0.6-1.5KN/m, and the use requirement cannot be met.

Due to the temperature change in the air, the colored adhesive used for the heat-vulcanized rubber shoes generates a white covering layer on the surface in the storage process of the rubber shoes, and the appearance quality of the rubber shoes is influenced.

Along with the acceleration of the social development process, the demand of good consumers is improved, and consumers have improved the requirements on the grade, the appearance quality and the bonding performance of rubber shoes. The water-based adhesive for the heat-vulcanized rubber shoes and the shoe making process thereof which are suitable for the adhesion of the anti-white-deformation vamp cloth are urgently needed. So as to comprehensively improve the quality level of rubber shoe products.

Disclosure of Invention

The invention aims to solve the technical problem, and aims to solve the defect that the surface of an adhesive generates a white deformation phenomenon in the existing rubber shoe bonding system using latex slurry, and provide an efficient adhesive of anti-white deformation vamp cloth and foxing rubber, a manufacturing method and an application process thereof, so that the bonding effect of the adhesive is improved, the wide adaptability of the adhesive to the specification and the hue of a vamp material is expanded, the quality problem is eliminated, the potential quality hazard of glue opening in the wearing process of the rubber shoe is prevented, the grade of the rubber shoe is improved, and the market-subdivision requirements of the air permeability of the rubber shoe are met.

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an efficient adhesive of anti-white shoe upper cloth and foxing rubber which characterized in that: the bonding system consists of two upper cloth cover bonding layers and a surrounding strip bonding surface tackifying layer; the upper surface bonding layer is of a single-layer structure, the upper surface bonding layer comprises sodium carboxymethyl cellulose containing a curing agent EN800 as a thickening body, and the thickening body and an adhesive FB050 are mixed to be used as the upper surface bonding layer for rubber bonding; the adhesion layer of the rubber surrounding strip for shoes is high-viscosity gasoline mucilage made of SCR5 natural rubber.

The addition amount of the curing agent EN800 is 5 percent of the total mass of the adhesive FB 050; the sodium carboxymethylcellulose is a 5% sodium carboxymethylcellulose water-soluble swelling body as a thickening body, and the dosage of the thickening body is 3% of the total dosage of FB 050.

The high-viscosity gasoline mucilage prepared from the SCR5 natural rubber comprises, by mass, 100 parts of SCR5 natural rubber, 1.8-2.2 parts of sulfur, 2.6-3.0 parts of vulcanization accelerator, 8-9 parts of zinc oxide, 1-2 parts of stearic acid, 1.6-2.8 parts of white carbon black, 2.2-2.8 parts of polyethylene glycol 4000, 4.0-5.0 parts of tackifying resin, 1.0-1.4 parts of anti-aging agent KY-405L and 500 parts of 120# gasoline 480-plus.

The high-viscosity gasoline mucilage prepared from the SCR5 natural rubber comprises, by mass, 100 parts of SCR5 natural rubber, 2.0 parts of sulfur, 2.8 parts of a vulcanization accelerator, 8.5 parts of zinc oxide, 1.5 parts of stearic acid, 2.2 parts of white carbon black, 2.5 parts of polyethylene glycol 4000#, 4.5 parts of tackifying resin, 1.2 parts of an anti-aging agent KY-405L and 490 parts of 120# gasoline.

Every 3.8 parts of accelerator consists of 0.7 part of accelerator M, 1.3 parts of accelerator DM and 1.8 parts of accelerator DS; the tackifying resin is a flavorless tackifying resin DT-100.

The preparation method of the high-viscosity gasoline mucilage prepared from the SCR5 natural rubber comprises the following steps:

(1) preparing a gasoline rubber cement compound: the SCR5 natural rubber is pressed and refined in an internal mixer at the rubber refining temperature of 80-90 ℃ for 8-12 minutes, the discharged material is rolled and refined smoothly on an open rubber refining machine, then the sheet is beaten and placed for 1-2 hours, then the open rubber refining machine is used for drawing 5 times through the machine under the conditions that the roller spacing is 0.1-0.2mm and the temperature is 35-45, and the sheet is rolled and refined smoothly on an open mill at the roller spacing of 4-5mm to obtain the SCR5 natural rubber plasticated rubber; the Wei's plasticity of the SCR5 natural rubber plasticated rubber is 0.65-0.70;

(2) preparing materials: mixing a vulcanization accelerator, a vulcanization activator, polyethylene glycol 4000#, and an anti-aging agent KY-405L to obtain a product A, and mixing tackifying resin and white carbon black to obtain a product B;

(3) preparing a rubber compound: coating SCR5 natural rubber plasticated rubber on an open rubber mixing mill at the roller spacing of 4-5mm and the roller temperature of 40-50 ℃, adding a material B, turning until a rubber sheet is smooth, adding a material A into the rubber mixing mill, continuously refining, turning for 7-8 times by a left and right open knife after powder is completely eaten, allowing all the powder to enter a colloid, and taking out the rubber sheet from the rubber mixing mill at the roller spacing of 5-6mm for cooling to obtain high-viscosity rubber layer rubber compound;

(4) preparing rubber cement paste:

(a) slicing: cutting the rubber compound into small rubber sheets with the length of 8-12cm and the width of 5-6 cm;

(b) sulfur soaking treatment: immersing sulfur into 5 parts of No. 120 gasoline, stirring uniformly and storing for later use;

(c) stirring the mucilage: adding the small pieces of mixed rubber sheets and 150 parts of No. 120 gasoline into a rubber slurry stirrer, and stirring the rubber sheets until the mixed rubber is dispersed in the gasoline to form uniform rubber slurry; adding 80 parts of gasoline into the rubber body for three times respectively, stirring the gasoline into the fed rubber body each time, and continuing adding the gasoline until all the added gasoline is dissolved into the rubber body to form uniform slurry; the stirring time is about 4.5-5 hours.

(d) Adding sulfur: opening the mucilage mixer to cool the water for half an hour, starting the mucilage mixer when the temperature of the mucilage is reduced to be below 80 ℃, adding the soaked sulfur and the gasoline for soaking into the mixer, and then cleaning the sulfur powder by using 45 parts of gasoline to enter the mixer; and (3) continuing stirring for half an hour, detecting by using a Bowman-simulated densitometer with the weight of 108 g and the measurement stroke of 100mm to obtain the mucilage concentration of 1-1.5 seconds, taking the unit second of time spent in the measurement stroke when the densitometer is freely immersed in the mucilage as the mucilage concentration, and discharging the mucilage into a mucilage barrel from a stirrer to obtain the high-viscosity gasoline mucilage.

And (3) verifying the qualification of the mixed rubber obtained in the step (3), adding 1g of sulfur into 52g of mixed rubber, uniformly mixing, detecting that the vulcanization starting point of the rubber material is 1 ' 40-2 ' 10 ' under the conditions of 143 ℃ and 20MPa, and using the index of the vulcanization starting point of the mixed rubber for the rubber cement stirring process, wherein the index of the vulcanization starting point of the mixed rubber is qualified.

Detecting the high-viscosity gasoline mucilage obtained in the step (e), coating 1-2g of the high-viscosity gasoline mucilage on a stainless steel sheet with the thickness of 1.5mm, placing the stainless steel sheet in a hot air drying oven with the temperature of 143 ℃ for baking for 35 minutes, and checking the vulcanization degree and the color of vulcanized rubber; and (4) the rubber cement body is normally vulcanized, and the color meets the requirement, so that the rubber cement body is qualified.

The specific preparation method of the 5% sodium carboxymethylcellulose water-soluble dilatant comprises the steps of adding the 5 parts sodium carboxymethylcellulose into 95 parts of hot distilled water at the temperature of 80-90 ℃ in a powdery state, adding the 5 parts sodium carboxymethylcellulose under stirring, and stirring to obtain a transparent viscous body to obtain the sodium carboxymethylcellulose water-soluble dilatant.

The use method of the anti-white-deformation efficient adhesive of the vamp fabric and the foxing rubber, (1) the upper brushing process: coating an upper surface bonding layer on a film bonding part of the upper surface of the heat vulcanized rubber shoe, and then drying for 32-36 minutes under the condition of a heat circulation air drying box with the drying temperature of 45-50 ℃ to obtain a dried slurry brushing upper semi-finished product;

(2) tackification treatment of rubber binding surfaces of rubber shoe surrounding strips: brushing high-viscosity gasoline mucilage with the thickness of 0.1-0.2mm on the bonding surface of the heat-vulcanized rubber shoe foxing, and drying at room temperature for 25-30 minutes to obtain the brushed rubber foxing.

(3) Bonding: bonding the bonding surface of the brushing paste surrounding strip on the bonding surface of the dried brushing paste upper semi-finished product, and pressing for 1-1.5 seconds under the pressure of 0.38MPa to obtain a semi-finished rubber shoe;

(4) vulcanizing the rubber shoes: and putting the semi-finished rubber shoes into a rubber shoe vulcanizing tank with the temperature of 115 ℃ and the hot air pressure of 0.38MPa, and carrying out heat preservation and pressure maintaining vulcanization for 40 minutes to obtain the finished rubber shoes.

(5) Measurement of adhesive Property of the finished rubber overshoes: and (3) placing the finished rubber shoe product at room temperature for 12 hours, and measuring the bonding strength of the foxing and the upper according to the GB/T532-2008.

(6) The bonding strength of the foxing and the upper of the rubber shoe manufactured by the process can reach more than 4.0 KN/m.

To verify the effect of the present invention, the following experiment was performed:

(1) optimum formula research of high-viscosity rubber paste for binding surface of foxing

TABLE 2

The optimum formula obtained by tests in tables 1 and 2 comprises 100 parts of SCR5 natural rubber, 2.0 parts of sulfur, 0.7 part of accelerator M, 1.3 parts of accelerator DM, 1.8 parts of accelerator DS, 8.5 parts of zinc oxide, 1.50 parts of stearic acid, 1.2 parts of anti-aging agent KY-405L, 2.2 parts of white carbon black, 2.5 parts of polyethylene glycol 4000#, 2.32 parts of odorless tackifying resin DT-1004.5 parts and 490 parts of 120# gasoline.

(2) Effect of swelling glue on adhesion

TABLE 3 Effect of swelling glue ratio on the adhesive effect of the cements

As shown in Table 3, the cement formed by using 15 parts of SCR5 natural rubber as the swelling glue has the best adhesion effect.

(3) Research on manufacturing process of high-viscosity rubber paste

Influence of plasticity of A plasticated rubber on performance of rubber cement

TABLE 4

Plasticity of plasticated rubber	<0.65	0.65-0.70	0.71 or more
				Workability in kneading	Difficulty in	Is normal	Easy
Production of mucilage	The cement paste has long stirring time	The stirring time of the mucilage is normal	Is normal
				Difficulty of brushing slurry	Difficulty in	Is normal	Is normal
Adhesive characteristics	Not good	Is very good	Is very good

The results in Table 4 show that SCR5 rubber can control the plasticity of rubber to 0.65-0.70, so that the rubber cement has optimal production process and adhesion effect.

Influence of vulcanization origin of B rubber compound on adhesion effect

TABLE 5

C mucilage preparation process research

C1 swelling glue process research

TABLE 6 time for swelling glue and stirring effect during brewing

As can be seen from Table 6, the brewing time of the raw gums ranged from 11 to 12 hours, and the raw gums were stirred at least every 1.5 hours during the brewing process, which was the most efficient for making the gums.

The influence of the specification of the mixed rubber block on the rubber cement stirring process during the stirring of the C2 rubber cement

TABLE 7

The table 7 shows that the rubber cement stirring rubber sheet is controlled to be 5-6mm thick (rubber mixing sheet), 8-12mm long and 5-6mm wide, the rubber cement is easy to stir, and the rubber cement manufacturing efficiency is high.

Preparation procedure study of C3 mucilage

TABLE 8

Table 8 shows that the procedure for making rubber cement of option 1 is the most time efficient and efficient. Influence of C4 mucilage concentration on foxing and bonding process

TABLE 9

Degree of cement (second)	<1.5	1.5-2	2-3
				Process performance of brushing slurry	Easy brushing pulp	Easy brushing pulp	Difficult brushing
Adhesive effect	Difference (D)	Good effect	Difference (D)

Table 9 shows that the concentration of the prepared high-viscosity rubber paste is 1.5-2 seconds, the brushing operation and the bonding effect on the surface of the foxing are at the best level.

(2) Study on shoe upper brushing process

The influence of the addition parts of the EN800 and the sodium carboxymethylcellulose water-soluble dilatant on the bonding effect

Watch 10

Table 10 shows that the best adhesion results were obtained by adding 5 parts of curing agent EN800 and 3 parts of 5% carboxymethylcellulose sodium hydroswelling to 100 parts of adhesive FB 050.

Effect of drying conditions after B brushing on adhesive Properties

TABLE 11

As can be seen from Table 11, the upper surface of the air textured yarn vamp fabric was coated with 5% EN800 and 3 parts of 5% sodium carboxymethylcellulose water-swellable adhesive FB050, and the adhesive effect was best when FB050 was dried at 40-50 deg.C for 35 minutes.

(4) Research on bonding foxing strip pressing process

TABLE 12 bonding pressure and time of foxing bond influence on bonding effect

Table 12 shows that the pressing pressure of the bonding of the foxing strips is 0.38MPa, and the pressing time is 1.5-2 seconds, so that the pressing effect and the bonding effect can be ensured.

(5) Study of vulcanization Process conditions

TABLE 13 Effect of vulcanizer process conditions on bond Strength

As shown in Table 13, the optimum vulcanization conditions were 115 ℃ in the vulcanizing tank, 0.38MPa in vulcanization pressure and 45 minutes in vulcanization time.

Due to the adoption of the technical scheme, compared with the prior art, the hot vulcanization bonding process disclosed by the invention has the advantages that the bonding performance of the rubber shoe surrounding strip and an upper material can be greatly improved. The adhesive strength of the invention is good, so the wearing life of the rubber shoes is prolonged. The method is simple and easy to industrialize.

Detailed Description

Example 1 of the invention: efficient adhesive for anti-white-deformation vamp cloth and foxing rubber and manufacturing method and application thereof

1. The formula of the sizing material is as follows: 100 parts of SCR5 natural rubber, 2.0 parts of sulfur, 2.8 parts of vulcanization accelerator, 8.5 parts of zinc oxide, 1.5 parts of stearic acid, 2.2 parts of white carbon black, 2.5 parts of polyethylene glycol 4000#, 4.5 parts of tackifying resin, 1.2 parts of anti-aging agent KY-405L and 490 parts of 120# gasoline.

2. The process comprises the following steps:

firstly, preparing high-viscosity rubber paste for the binding surface of the surrounding strip:

(1) preparing a gasoline rubber cement compound:

A. preparing SCR5 natural rubber plasticated rubber: 100 parts of SCR5 natural rubber is taken, the mixture is milled for 8 to 12 minutes in an internal mixer at the rubber mixing temperature of 80 to 90 ℃, discharged to an open rubber mixer to be rolled and smoothed, then the mixture is flaked for 1 to 2 hours, then the mixture is pulled through the open rubber mixer for 5 times under the conditions that the roller spacing is 0.1 to 0.2mm and the temperature is 35 to 45 ℃, and then the mixture is rolled and smoothed on an open mill at the roller spacing of 4 to 5mm to obtain the SCR5 natural rubber plasticated rubber. The Weibull plasticity of the SCR5 natural rubber plasticator is 0.65-0.70.

(2) Preparing materials: mixing a vulcanization accelerator, a vulcanization activator, polyethylene glycol 4000#, and an anti-aging agent KY-405L to obtain a product A, and mixing tackifying resin and white carbon black to obtain a product B;

(3) preparing a rubber compound: coating SCR5 natural rubber plasticated rubber on an open rubber mixing mill at the roller spacing of 4-5mm and the roller temperature of 40-50 ℃, adding a material B, turning until a rubber sheet is smooth, adding a material A into the rubber mixing mill, continuously refining, turning for 7-8 times by a left and right open knife after powder is completely eaten, allowing all the powder to enter a colloid, and taking out the rubber sheet from the open rubber mixing mill at the roller spacing of 5-6mm for cooling to obtain the high-viscosity rubber layer rubber compound.

(4) And (3) verifying the qualification of the rubber compound: taking 52g of the mixed rubber according to the proportion, adding 1g of sulfur, uniformly mixing, and detecting that the starting point of rubber material vulcanization is 1 '40' -2 '10' under the conditions of 143 ℃ and 20MPa, wherein the index of the starting point of the mixed rubber vulcanization is qualified. Can be used for the mucilage stirring process.

(5) Preparing rubber cement paste:

(a) slicing: cutting the mixed rubber into small pieces of rubber sheets with the length of 8-12cm and the width of 5-6 cm.

(b) Sulfur soaking treatment: 2.4 parts of sulfur is immersed into 5 parts of 120# gasoline to be evenly stirred and stored for standby application.

(c) Stirring the mucilage: 86 parts of mixed rubber pieces cut into small pieces and 150 parts of No. 120 gasoline are added into a rubber cement stirrer, and the rubber pieces are stirred until the mixed rubber is dispersed in the gasoline to form uniform rubber cement body. And adding 80 parts of gasoline into the mixture three times, stirring the gasoline into the edible colloid each time, and then continuously adding the gasoline. Until all the added gasoline dissolved into the rubber body to form a homogeneous slurry. (the total gasoline amount in this step is 440 parts) the stirring time is about 4.5 to 5 hours.

(d) Adding sulfur: and (3) opening the mucilage stirrer to cool water, cooling for half an hour, starting the mucilage stirrer when the temperature of the mucilage is reduced to be below 80 ℃, adding the soaked sulfur (containing 7 parts of gasoline in total) into the stirrer, and then cleaning the sulfur powder by using 45 parts of oil to enter the stirrer. And (3) continuing stirring for half an hour, detecting by using a Bowman-simulated densitometer (measuring stroke is 100mm) with the weight of 108 g to obtain that the cement concentration is 1-1.5 seconds (the unit second of time used for measuring the stroke when the densitometer freely sinks into the cement is taken as the cement concentration), and discharging the cement into a cement barrel from the stirrer to obtain the cement A.

(e) And (3) mucilage inspection and application: taking 1-2g of rubber paste A, coating the rubber paste on a stainless steel sheet with the thickness of 1.5mm, placing the stainless steel sheet in a hot air drying oven with the temperature of 143 ℃ for baking for 35 minutes, and checking the vulcanization degree and the color of vulcanized rubber. If the rubber slurry is normally vulcanized and the color meets the requirement, a qualification certificate is obtained and is used for the molding and assembling procedure of the heat vulcanized rubber shoes.

Then brushing the adhesive surface of the shoe surrounding strip with the obtained high-viscosity rubber paste, and drying for 10-20 minutes at room temperature for later use.

And simultaneously, coating an FB050 adhesive containing 5 parts of curing agent EN800 and 3 parts of 5% sodium carboxymethylcellulose water-soluble dilatant on the adhesive piece bonding part of the hot vulcanized rubber upper surface, and drying for 32-36 minutes under the condition of hot circulating air at the drying temperature of 45-50 ℃ to obtain a dried brushing slurry upper semi-finished product.

And then the bonding surface of the brushing welt is attached to the surface of the FB050 adhesive on the upper, and the bonding is carried out for 1 to 1.5 seconds under the pressure of 0.35 to 0.38MPa, so as to obtain the semi-finished product of the rubber shoe with the bonding welt. And putting the semi-finished rubber shoe into a rubber shoe vulcanizing tank with the temperature of 115 ℃ and the pressure of 0.38MPa, preserving the temperature, maintaining the pressure and vulcanizing for 40 minutes to obtain the finished rubber shoe. The adhesive strength can be measured after the rubber shoe finished product is cooled for more than 12 hours at room temperature.

Example 2 of the invention: the anti-white-deformation efficient adhesive of the vamp fabric and the foxing rubber and the manufacturing method and the application thereof are as follows:

the formula of the sizing material is as follows: 100 parts of SCR5 natural rubber, 2.3 parts of sulfur, 2.8 parts of vulcanization accelerator, 6.3 parts of vulcanization activator, 2.2 parts of white carbon black, 2.5 parts of polyethylene glycol 4000#, 4.6 parts of tackifying resin, 1.2 parts of anti-aging agent KY-405L and 495 parts of 120# gasoline.

The process comprises the following steps: the same as in example 1.