A TPR sole surface treatment agent and its preparation method and application

Abstract

The invention belongs to the technical field of surface treatment agents, and specifically relates to a TPR sole surface treatment agent, a preparation method thereof and an application thereof. The TPR sole surface treatment agent comprises 64-67 parts of component A, 5.5-6.5 parts of component B and 27.5-29.5 parts of component C by weight; component A is a mixture of ethyl ester, butanone and acetone; component B is a mixture of 9202 and 9808; and component C is 92H. The surface treatment agent of the invention has the dual functions of a treatment agent and a glue, which can not only simplify the manufacturing process, reduce costs, and be environmentally friendly and safe, but also only needs to add a small amount of oxidant powder, and can be applied to most TPR material outsoles, and has a very wide range of applications.

Description

Technical Field

[0001] The invention belongs to the technical field of surface treatment agents, and in particular relates to a TPR sole surface treatment agent and a preparation method and application thereof. Background Art

[0002] TPR (Thermoplastic Rubber) is a material that has the characteristics of both rubber and thermoplastic plastics. It is generally made of SBS as the base material and added with resin, filler and other functional additives. Due to its wear resistance, easy processing and low price, TPR materials are widely used in daily products, adult products, hardware tools, luggage wheels, sports equipment, toy products, auto parts, medical products, wires and cables, and shoe products, etc. SBS-based TPR is mainly used in the shoe industry, especially as a mid- and high-end sports shoe sole material.

[0003] The traditional process of making soles is generally TPR-treatment agent-glue-lamination. First, pre-treat the TPR outsole with a treatment agent, then apply glue, and finally laminate the TPR outsole to the midsole. This process not only requires a treatment agent process, but also a glue application process, which requires multiple processes and multiple manual labor. At the same time, the treatment agents currently used are all added with volatile and toxic organic solvents, which are easy to increase VOC volatility and bring certain safety hazards to operators and users. In addition, since the use range of existing TPR treatment agents is relatively narrow, one treatment agent is only suitable for a few types of TPR materials, which brings certain limitations to its use and increases R&D costs.

[0004] In recent years, with the increase in labor costs and the improvement of environmental protection requirements, the shoemaking industry has also begun to face transformation to adapt to the development of the market environment. Therefore, for shoe factories, how to improve efficiency, save labor, reduce inventory, etc. has become a trend.

[0005] Based on the above reasons, it is of great practical significance to develop an environmentally friendly and widely applicable comprehensive surface treatment agent. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a TPR sole surface treatment agent and a preparation method and application thereof to solve the problems existing in the prior art. The surface treatment agent has the dual functions of a treatment agent and glue, which can not only simplify the manufacturing process and reduce costs, but also be environmentally friendly and safe. Moreover, only a small amount of oxidant powder needs to be added, and the agent can be applied to most TPR material outsoles, and has a very wide range of applications.

[0007] One aspect of the present invention is to provide a TPR sole surface treatment agent, comprising 64-67 parts by weight of component A, 5.5-6.5 parts by weight of component B and 27.5-29.5 parts by weight of component C;

[0008] The component A is a mixture of ethyl ester, butanone and acetone;

[0009] The B component is a mixture of 9202 and 9808;

[0010] The C component is 92H.

[0011] The present invention uses TPU resins with different viscosities (molecular weights) as one of the raw materials and matches it with the independently developed liquid C component to obtain a surface treatment agent, which not only has affinity with the TPR material, but also has the feel of general glue, can be suitable for online operation, and saves production costs; by using a non-toxic or low-toxic solution as a solvent, VOC volatilization and harm to operators can be reduced, and it is environmentally friendly and safe.

[0012] Preferably, the mass ratio of ethyl ester, butanone and acetone in the component A in the above technical solution is 1.7-1.9:1-1.2:1. In the technical solution, a low-toxic or non-toxic, colorless and transparent component is selected as a solvent, which can not only effectively disperse the resin component, but also has low corrosiveness and no harm to TPR, and the obtained product has a high qualified rate, and is harmless to production employees, and is environmentally safe.

[0013] Preferably, in the above technical solution, the mass ratio of 9202 to 9808 in the B component is 9-10:1; the viscosity of 9202 is 1800-2200 cps; and the viscosity of 9808 is 300-400 cps.

[0014] 9202 and 9808 are TPU resins with different viscosities. The present invention makes full use of the characteristics of high-viscosity and low-viscosity TPU resins with different molecular weights by matching each other. The obtained surface treatment agent can not only maintain good affinity with the TPR material, but also has glue properties, good viscosity and high yield.

[0015] Preferably, in the above technical solution, the viscosity of 92H is 1750-1850cps, and the preparation method thereof is that polyol and hexamethylene diisocyanate (HDI) are mixed in a mass ratio of 9-13:1, and a catalyst is added at 80-100°C for polymerization. 92H in this technical solution is independently developed by the inventor, and is a polymer solution obtained by the polymerization reaction of polyol and HDI, and has excellent bonding performance and weather resistance. Specifically, the catalyst can be an organic tin catalyst.

[0016] Preferably, in the above technical solution, the solid content of the surface treatment agent is 10-12%. In this technical solution, by controlling the solid content of the surface treatment, not only can the viscosity be ensured and the hydrolysis resistance be increased, but also the processing such as painting in the subsequent shoemaking process can be facilitated, thus saving costs.

[0017] Preferably, in the above technical solution, the viscosity of the surface treatment agent is 150-300 cps.

[0018] Another aspect of the present invention further provides a method for preparing a TPR sole surface treatment agent, comprising the following specific steps:

[0019] S1. At room temperature, add component A to the reactor according to the ratio, stir evenly at a speed of 500-600r / min to obtain a mixed solution of component A;

[0020] S2. Add component B into the mixed solution of component A obtained in S1 according to the ratio, heat the reactor to 50-55°C while stirring at a speed of 300-400r / min, and continue to stir for 2-3h to obtain a reaction solution;

[0021] S3. Add component C to the reaction solution obtained in S2 according to the ratio, stir at a speed of 300-400r / min under heat preservation for 0.5-1h to obtain a surface treatment agent (3309);

[0022] S4. After sampling and testing, packaging is carried out.

[0023] Another aspect of the present invention provides an application of the TPR sole surface treatment agent in the production of middle- and high-end sports shoes.

[0024] Preferably, in the above technical solution, the use process of the surface treatment agent is: mix the surface treatment agent and the oxidant powder evenly, then apply a layer of the mixed liquid on the surface of the TPR outsole, bake it in a 60°C oven for 2-3 minutes, and finally bond the TPR outsole and the midsole to complete the production.

[0025] Preferably, in the above technical solution, the mass ratio of the surface treatment agent to the oxidant powder is 1000:4-7; the oxidant powder is sodium hypochlorite powder. The TPR sole surface treatment agent of the present invention only needs to add 0.4-0.7% of oxidant powder when used, which can effectively adapt to complex and changeable TPR materials, is non-corrosive, does not rot the sole, and does not turn yellow.

[0026] Advantages compared to the prior art:

[0027] 1. The TPR sole surface treatment agent of the present invention uses a non-toxic or low-toxic mixed organic solvent as a solvent. By matching solid TPU glue 9202 and 9808 and combining 92H liquid glue, the obtained TPR sole surface treatment agent not only has the function of a treatment agent, but also has good affinity with TPR, has the characteristics of general glue, and has good viscosity.

[0028] 2. The TPR sole surface treatment agent prepared by the present invention combines the properties of glue and treatment agent. It only needs to be applied once on the TPR outsole to replace the surface treatment and glue coating process of the traditional process, which can reduce labor, improve production efficiency, save costs, and be green and environmentally friendly.

[0029] 3. The TPR sole surfactant prepared by the present invention can be used in the outsoles of most TPR materials. Only a small amount of oxidant needs to be added to achieve the purpose of good viscosity and no damage to the sole. It has a wide range of applications and can meet market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 These are the experimental example 1 of the present invention and the effect diagram of the use of the experimental example 1. DETAILED DESCRIPTION

[0031] The above-mentioned technical features of the present invention and the technical features specifically described below (such as implementation cases) can be combined with each other to form new or preferred technical solutions, but the present invention is not limited to these embodiments, and these embodiments do not limit the present invention in any way.

[0032] The experimental methods in the following examples are conventional methods unless otherwise specified. The preparations involved in the following examples are common commercial products unless otherwise specified and can be purchased from the market.

[0033] The preparation method of 92H is as follows: after mixing polyol and hexamethylene diisocyanate (HDI) at a mass ratio of 9-13:1, adding an organic tin catalyst at 80-100° C. to polymerize. By adjusting the raw material ratio and conditions, 92H with different viscosities can be obtained.

[0034] The present invention is described in further detail below in conjunction with embodiments:

[0035] Example 1

[0036] A TPR sole surface treatment agent, comprising 66 parts of component A, 6 parts of component B and 28 parts of component C by weight;

[0037] Wherein, component A is a mixture of ethyl ester, butanone and acetone in a mass ratio of 1.8:1.1:1;

[0038] Component B is a mixture of 9202 and 9808 in a mass ratio of 9.4:1; the viscosity of 9202 is 2000cps; the viscosity of 9808 is 350cps;

[0039] The C component is 92H and has a viscosity of 1800cps;

[0040] The preparation method comprises the following steps:

[0041] S1. At room temperature, add component A to the reactor according to the ratio, stir at a speed of 500r / min to obtain a mixed solution of component A;

[0042] S2. Add component B into the mixed solution of component A obtained in S1 according to the ratio, heat the reactor to 50°C under stirring at a speed of 300 r / min, and continue to stir for 2 hours to obtain a reaction solution;

[0043] S3. The C component was added to the reaction solution obtained in S2 according to the ratio, and stirred at a speed of 300r / min under the heat preservation state for 0.5h to obtain a surface treatment agent;

[0044] S4. After sampling and testing, packaging is carried out.

[0045] After testing, the solid content of the obtained surface treatment agent was 11.2%, the viscosity was 220cps, and the appearance was milky white, which was qualified.

[0046] Example 2

[0047] A TPR sole surface treatment agent, comprising 64 parts of component A, 6.5 parts of component B and 29.5 parts of component C by weight;

[0048] Wherein, component A is a mixture of ethyl ester, butanone and acetone in a mass ratio of 1.7:1.2:1;

[0049] Component B is a mixture of 9202 and 9808 in a mass ratio of 9:1; the viscosity of 9202 is 2000cps; the viscosity of 9808 is 350cps;

[0050] The C component is 92H and has a viscosity of 1800cps;

[0051] The preparation method comprises the following steps:

[0052] S1. At room temperature, add component A to the reactor according to the ratio, stir evenly at a speed of 550r / min to obtain a mixed solution of component A;

[0053] S2. Add component B into the mixed solution of component A obtained in S1 according to the ratio, raise the temperature of the reactor to 52°C while stirring at a speed of 350 r / min, and continue to stir for 3 hours to obtain a reaction solution;

[0054] S3. The C component was added to the reaction solution obtained in S2 according to the ratio, and stirred for 1h at a speed of 350r / min under heat preservation to obtain a surface treatment agent;

[0055] S4. After sampling and testing, packaging is carried out.

[0056] After testing, the obtained surface treatment agent has a solid content of 11.9%, a viscosity of 300 cps, and a milky white appearance, which is qualified.

[0057] Example 3

[0058] A TPR sole surface treatment agent, comprising 67 parts of component A, 5.5 parts of component B and 27.5 parts of component C by weight;

[0059] Wherein, component A is a mixture of ethyl ester, butanone and acetone in a mass ratio of 1.9:1:1;

[0060] Component B is a mixture of 9202 and 9808 in a mass ratio of 10:1; the viscosity of 9202 is 2000cps; the viscosity of 9808 is 350cps;

[0061] The C component is 92H and has a viscosity of 1800cps;

[0062] The preparation method comprises the following steps:

[0063] S1. At room temperature, add component A to the reactor according to the ratio, stir evenly at a speed of 600r / min to obtain a mixed solution of component A;

[0064] S2. Add component B into the mixed solution of component A obtained in S1 according to the ratio, heat the reactor to 55°C under stirring at a speed of 400 r / min, and continue to stir for 2 hours to obtain a reaction solution;

[0065] S3. The C component was added to the reaction solution obtained in S2 according to the ratio, and stirred for 0.5h at a speed of 400r / min under heat preservation to obtain a surface treatment agent;

[0066] S4. After sampling and testing, packaging is carried out.

[0067] After testing, the obtained surface treatment agent has a solid content of 10.4%, a viscosity of 155 cps, and a milky white appearance, which is qualified.

[0068] Comparative Example 1

[0069] A TPR sole surface treatment agent, comprising 66 parts of component A, 6 parts of component B and 28 parts of component C by weight;

[0070] Wherein, component A is a mixture of ethyl ester, butanone and acetone in a mass ratio of 1.8:1.1:1;

[0071] Component B is a mixture of 9202 and 9808 in a mass ratio of 5:1; the viscosity of 9202 is 2000cps; the viscosity of 9808 is 350cps;

[0072] The C component is 92H and has a viscosity of 1800cps;

[0073] The preparation method comprises the following steps:

[0074] S1. At room temperature, add component A to the reactor according to the ratio, stir at a speed of 500r / min to obtain a mixed solution of component A;

[0075] S2. Add component B into the mixed solution of component A obtained in S1 according to the ratio, heat the reactor to 50°C under stirring at a speed of 300 r / min, and continue to stir for 2 hours to obtain a reaction solution;

[0076] S3. The C component was added to the reaction solution obtained in S2 according to the ratio, and stirred at a speed of 300r / min under the heat preservation state for 0.5h to obtain a surface treatment agent;

[0077] S4. Sampling and testing.

[0078] After testing, the obtained surface treatment agent had a solid content of 14.5%, a viscosity of 510 cps, and a milky white appearance, which was unqualified.

[0079] Comparative Example 2

[0080] A TPR sole surface treatment agent, comprising 74 parts of component A, 6 parts of component B and 20 parts of component C by weight;

[0081] Wherein, component A is a mixture of ethyl ester, butanone and acetone in a mass ratio of 1.8:1.1:1;

[0082] Component B is a mixture of 9202 and 9808 in a mass ratio of 9.4:1; the viscosity of 9202 is 2000cps; the viscosity of 9808 is 350cps;

[0083] The C component is 92H and has a viscosity of 1800cps;

[0084] The preparation method comprises the following steps:

[0085] S1. At room temperature, add component A to the reactor according to the ratio, stir at a speed of 500r / min to obtain a mixed solution of component A;

[0086] S2. Add component B into the mixed solution of component A obtained in S1 according to the ratio, heat the reactor to 50°C under stirring at a speed of 300 r / min, and continue to stir for 2 hours to obtain a reaction solution;

[0087] S3. The C component was added to the reaction solution obtained in S2 according to the ratio, and stirred at a speed of 300r / min under the heat preservation state for 0.5h to obtain a surface treatment agent;

[0088] S4. Sampling and testing.

[0089] After testing, the obtained surface treatment agent had a solid content of 8.6%, a viscosity of 142 cps, and a milky white appearance, which was unqualified.

[0090] Test Example 1

[0091] Application of TPR sole surface treatment agent in the production of mid-range and high-end sports shoes: The surface treatment agent of Example 1 and sodium hypochlorite powder are mixed evenly at a mass ratio of 1000:4, and then a layer of the mixture is applied on the surface of the TPR outsole, and then baked in an oven at 60°C for 2 minutes. Finally, the TPR outsole is bonded to the midsole MD to complete the production. After drying, the adhesive strength and peeling strength are tested, and the peeling condition is observed. The results are shown in Table 1, where the appearance after peeling is as follows: Figure 1 shown.

[0092] Test Example 2

[0093] Application of TPR sole surface treatment agent in the production of mid-range and high-end sports shoes: The surface treatment agent of Example 1 and sodium hypochlorite powder are mixed evenly at a mass ratio of 1000:8, and then a layer of the mixture is applied on the surface of the TPR outsole, and then baked in an oven at 60°C for 2 minutes. Finally, the TPR outsole is bonded to the midsole MD to complete the production. After drying, the adhesive strength and peeling strength are tested, and the peeling condition is observed. The results are shown in Table 1, where the appearance after peeling is as follows: Figure 1 shown.

[0094] Test Example 3

[0095] The application of TPR sole surface treatment agent in the production of mid- and high-end sports shoes, the surface treatment agent of comparative example 1 and sodium hypochlorite powder are mixed evenly at a mass ratio of 1000:4, and then a layer of the mixture is brushed on the surface of the TPR outsole, and baked in an oven at 60°C for 2 minutes, and finally the TPR outsole is bonded to the midsole MD to complete the production. After drying, the bonding strength and peeling strength are tested, and the peeling condition is observed, and the results are shown in Table 1.

[0096] Test Example 4

[0097] The application of TPR sole surface treatment agent in the production of mid- and high-end sports shoes, the surface treatment agent of comparative example 2 and sodium hypochlorite powder are mixed evenly at a mass ratio of 1000:4, and then a layer of the mixture is brushed on the surface of the TPR outsole, and baked in an oven at 60°C for 2 minutes, and finally the TPR outsole is bonded to the midsole MD to complete the production. After drying, the bonding strength and peeling strength are tested, and the peeling condition is observed, and the results are shown in Table 1.

[0098] Table 1

[0099]

[0100]

[0101] It can be seen from the results in Table 1 that the TPR sole surface treatment agent prepared by the preparation method of the present invention has high bonding strength and good peeling effect, and only a small amount (4%) of oxidant powder needs to be added during use to meet the standard requirements.

[0102] In summary, the present invention uses TPU resins with different viscosities (molecular weights) as one of the raw materials, and matches it with the independently developed liquid C component 92H to obtain a TPR sole surface treatment agent with a solid content of 10-12% and a viscosity of 150-300 cps, which can meet the requirements of relevant products. When used for making mid- and high-end sports shoes, it has good viscosity and good pulling effect, does not damage the sole, and has a wide range of applications.

[0103] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A TPR sole surface treatment agent, characterized in that: The composition comprises 64-67 parts of component A, 5.5-6.5 parts of component B and 27.5-29.5 parts of component C by weight; The component A is a mixture of ethyl ester, butanone and acetone; The B component is a mixture of 9202 and 9808 in a mass ratio of 9-10:1; The C component is 92H; The 92H is prepared by mixing polyol and hexamethylene diisocyanate in a mass ratio of 9-13:1, and then adding a catalyst to polymerize at 80-100°C.

2. A TPR sole surface treatment agent according to claim 1, characterized in that: The mass ratio of ethyl ester, butanone and acetone in the component A is 1.7-1.9:1-1.2:

1.

3. A TPR sole surface treatment agent according to claim 1, characterized in that: The viscosity of 9202 is 1800-2200 cps; the viscosity of 9808 is 300-400 cps.

4. A TPR sole surface treatment agent according to claim 1, characterized in that: The viscosity of 92H is 1750-1850 cps.

5. A TPR sole surface treatment agent according to claim 1, characterized in that: The solid content of the surface treatment agent is 10-12%.

6. A TPR sole surface treatment agent according to claim 1, characterized in that: The viscosity of the surface treatment agent is 150-300 cps.

7. A method for preparing a TPR sole surface treatment agent according to any one of claims 1 to 6, characterized in that: The specific steps include: S1. At room temperature, add component A to the reactor according to the ratio, stir evenly at a speed of 500-600r / min to obtain a mixed solution of component A; S2. Add component B into the mixed solution of component A obtained in S1 according to the ratio, heat the reactor to 50-55°C while stirring at a speed of 300-400r / min, and continue to stir for 2-3h to obtain a reaction solution; S3. The C component was added to the reaction solution obtained in S2 according to the ratio, and stirred at a speed of 300-400r / min under heat preservation for 0.5-1h to obtain a surface treatment agent; S4. After sampling and testing, packaging is carried out.

8. Use of the TPR sole surface treatment agent according to any one of claims 1 to 6 in the production of mid-range and high-end sports shoes.

9. The use according to claim 8, characterized in that: The use process of the surface treatment agent is: mix the surface treatment agent and the oxidant powder evenly, then apply a layer of the mixed liquid on the surface of the TPR outsole, bake in an oven at 60°C for 2-3 minutes, and finally bond the TPR outsole and the midsole to complete the production; the oxidant powder is sodium hypochlorite powder.

10. The use according to claim 9, characterized in that: The mass ratio of the surface treatment agent to the oxidant powder is 1000:4-7.

Images