A SBA high-elastic composite material, preparation method and application thereof

Abstract

The present invention relates to the technical field of SBA materials, and in particular to an SBA high-elastic composite material, a preparation method and an application thereof, comprising the following raw materials in parts by weight: 45-50 parts of EVA, 30-35 parts of POE, 15-20 parts of SEBS, 8-12 parts of functional additives, 6-9 parts of modified fillers, 3-5 parts of nano zinc oxide, 2-3 parts of antioxidants, 1-3 parts of foaming agents, 2-3 parts of calcium stearate, and 1-2 parts of crosslinking agents. The SBA high-elastic composite material of the present invention adopts EVA, POE, and SEBS as a matrix, and by adding nano zinc oxide, antioxidants, foaming agents, calcium stearate, and crosslinking agents as additives, and by simultaneously preparing modified fillers and functional additives, the tearing performance, hardness, and elasticity performance of the product are coordinated and improved, and the product has remarkable effects on scratch resistance and flexural stability.

Description

Technical Field

[0001] The invention relates to the technical field of SBA materials, and in particular to an SBA high-elastic composite material, a preparation method and application thereof. Background Art

[0002] SBA material uses EVA (ethylene-vinyl acetate), POE (polyolefin elastomer), SEBS (polystyrene-butadiene-styrene triblock copolymer) as main materials, and is made through a foaming molding process. It can be applied to shoelaces, linings, straps, mouse pads and other fields. However, the existing SBA material has poor elasticity, and it is difficult to coordinate and improve the tearing performance, hardness and elasticity of the product. In addition, the product has poor scratch resistance and flexural stability, which limits the use efficiency of the product. Based on this, the present invention further improves it. Summary of the invention

[0003] In view of the defects of the prior art, the object of the present invention is to provide a SBA high-elastic composite material, a preparation method and application thereof, so as to solve the problems raised in the above background technology.

[0004] The present invention solves the technical problem by adopting the following technical solution:

[0005] The present invention provides an SBA high-elastic composite material, comprising the following raw materials in parts by weight:

[0006] EVA 45~50 parts, POE 30~35 parts, SEBS 15~20 parts, functional additives 8~12 parts, modified fillers 6~9 parts, nano zinc oxide 3~5 parts, antioxidant 2~3 parts, foaming agent 1~3 parts, calcium stearate 2~3 parts, cross-linking agent 1~2 parts.

[0007] Preferably, the foaming agent is azodicarbonamide; the cross-linking agent is dicumyl peroxide; and the antioxidant is antioxidant 1010.

[0008] Preferably, the preparation method of the functional additive is:

[0009] S01: dissolving tris(hydroxymethyl)aminomethane in distilled water at a weight ratio of 2:7, and adjusting the pH to 8.5 with hydrochloric acid to obtain a Tris-HCl buffer solution;

[0010] Add 2 to 4 parts of silane coupling agent KH560 and 2 to 3 parts of fiber modification agent to 7 to 11 parts of Tris-HCl buffer solution by weight, stir well, and obtain fiber modification solution;

[0011] S02: Ultrasonic mixing of europium oxide, 55% by mass urea solution and 10% by mass lanthanum chloride solution in a weight ratio of (4-5):(6-7):2, after the ultrasonic treatment is completed, the mixture is filtered and dried to obtain a europium oxide agent;

[0012] S03: ball-milling the europium oxide agent and the fiber modification liquid at a weight ratio of 2:5, with a ball-milling speed of 1500 r / min for 2 h. After the ball-milling is completed, the mixture is filtered and dried to obtain a functional additive.

[0013] Preferably, the ultrasonic mixing treatment in S02 is performed at an ultrasonic power of 450-500 W and for 1 hour.

[0014] Preferably, the preparation method of the modified fiber agent is:

[0015] Silane coupling agent KH550, polyvinyl alcohol and water were stirred at a weight ratio of 1:2:4 at 65°C for 1 hour at a stirring speed of 150-200 r / min. After the stirring was completed, 4-7% of the total amount of water was added with nano-titanium dioxide, and the stirring temperature and speed were maintained and the stirring was continued for 1 hour to obtain a modified solution;

[0016] 2-5 parts of nano calcium carbonate, 3-5 parts of sepiolite fiber, 5-8 parts of modified solution and 1-3 parts of sodium lignin sulfonate are mixed and ball-milled by weight at a ball-milling speed of 1000-1500 r / min for 2 hours. After the ball-milling is completed, the mixture is filtered and dried to obtain a modified fiber agent.

[0017] Preferably, the silane coupling agent is silane coupling agent KH550.

[0018] Preferably, the preparation method of the modified filler is:

[0019] S11: preparing a sodium dodecylbenzene sulfonate solution with a mass fraction of 5-7%, and then adding 2-3 parts of phosphate buffer solution and 1-2 parts of sodium carboxymethyl cellulose to 5-8 parts of the sodium dodecylbenzene sulfonate solution by weight, stirring sufficiently to obtain a filler treatment solution;

[0020] S12: Add 3-5 parts of barium sulfate and 1-3 parts of wood ash to 6-9 parts of filler treatment liquid by weight, and then add 2-3 parts of burnt talcum powder, stir, filter and dry after stirring to obtain a modified filler.

[0021] Preferably, the pH value of the phosphate buffer solution is 5.5.

[0022] Preferably, the stirring speed of the stirring treatment is 450-550 r / min, the stirring is for 1 hour, and the stirring temperature is 50-55° C.

[0023] The present invention also provides a method for preparing a SBA high-elastic composite material, comprising the following steps:

[0024] The raw materials were weighed according to their weight, and added into a mixer in sequence for mixing at a mixing temperature of 110-120°C for 10 minutes. The mixed material was granulated in a granulator with a particle size of 3 mm, and then foamed in a foaming machine at a foaming temperature of 170°C for 5 minutes. Finally, the material was cooled to room temperature to obtain an SBA high-elastic composite material.

[0025] The invention also provides an application of the SBA high-elastic composite material in shoe materials.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The SBA high-elastic composite material of the present invention adopts EVA, POE and SEBS as a matrix, and by adding nano zinc oxide, an antioxidant, a foaming agent, calcium stearate and a cross-linking agent as auxiliary agents, and by preparing a modified filler and a functional auxiliary agent, the tearing property, hardness and elasticity of the product are improved in a coordinated manner, and the product has remarkable effects on scratch resistance and flexural stability.

[0028] The functional additive is prepared by mixing europium oxide and fiber modification liquid. The europium oxide is prepared by mixing europium oxide, 55% by mass urea solution and 10% by mass lanthanum chloride solution by ultrasonic mixing, so as to optimize the coordination effect of europium oxide and fiber modification liquid. Meanwhile, the fiber modification liquid is prepared by using Tris-HCl buffer solution, silane coupling agent KH560 and modified fiber agent, so as to optimize the coordination effect of modified fiber agent and europium oxide, thereby improving the performance effect of the product.

[0029] The modified fiber agent uses nano calcium carbonate and sepiolite fiber as the base synergist, and is optimized by the modified solution and sodium lignin sulfonate. The silane coupling agent KH550, polyvinyl alcohol, water and nano titanium dioxide in the modified solution are blended to enhance the blending property of the raw materials in the modified solution. At the same time, nano calcium carbonate and sepiolite fiber are added, and europium oxide is further blended. Thus, the functional additive obtained optimizes the coordination of the tearing property, hardness and elasticity property of the product in the system, and enhances the scratch resistance and flexural stability of the product.

[0030] The modified filler is prepared by mixing barium sulfate and wood ash, and then mixing with a filler treatment liquid and burnt talcum powder for improved treatment. The sodium dodecylbenzene sulfonate solution, phosphate buffer solution and sodium carboxymethyl cellulose in the filler treatment liquid are mixed. The synergistic effect of the raw materials is adopted, and the synergistic effect of the modified filler and the functional additive is enhanced, so that the performance of the product is further improved. DETAILED DESCRIPTION

[0031] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The SBA high-elastic composite material of this embodiment includes the following raw materials in parts by weight:

[0033] EVA 45~50 parts, POE 30~35 parts, SEBS 15~20 parts, functional additives 8~12 parts, modified fillers 6~9 parts, nano zinc oxide 3~5 parts, antioxidant 2~3 parts, foaming agent 1~3 parts, calcium stearate 2~3 parts, cross-linking agent 1~2 parts.

[0034] The foaming agent in this embodiment is azodicarbonamide; the cross-linking agent is dicumyl peroxide; and the antioxidant is antioxidant 1010.

[0035] The preparation method of the functional additive of this embodiment is:

[0036] S01: dissolving tris(hydroxymethyl)aminomethane in distilled water at a weight ratio of 2:7, and adjusting the pH to 8.5 with hydrochloric acid to obtain a Tris-HCl buffer solution;

[0037] Add 2 to 4 parts of silane coupling agent KH560 and 2 to 3 parts of fiber modification agent to 7 to 11 parts of Tris-HCl buffer solution by weight, stir well, and obtain fiber modification solution;

[0038] S02: Ultrasonic mixing of europium oxide, 55% by mass urea solution and 10% by mass lanthanum chloride solution in a weight ratio of (4-5):(6-7):2, after the ultrasonic treatment is completed, the mixture is filtered and dried to obtain a europium oxide agent;

[0039] S03: The europium oxide agent and the fiber modification liquid are ball-milled at a weight ratio of 2:5, with a ball-milling speed of 1500 r / min for 2 h. After the ball-milling is completed, the mixture is filtered and dried to obtain a functional additive.

[0040] The ultrasonic power of the ultrasonic mixing treatment in S02 of this embodiment is 450-500W, and the ultrasonic treatment is performed for 1 hour.

[0041] The preparation method of the modified fiber agent of this embodiment is:

[0042] Silane coupling agent KH550, polyvinyl alcohol and water were stirred at a weight ratio of 1:2:4 at 65°C for 1 hour at a stirring speed of 150-200 r / min. After the stirring was completed, 4-7% of the total amount of water was added with nano-titanium dioxide, and the stirring temperature and speed were maintained and the stirring was continued for 1 hour to obtain a modified solution;

[0043] 2-5 parts of nano calcium carbonate, 3-5 parts of sepiolite fiber, 5-8 parts of modified solution and 1-3 parts of sodium lignin sulfonate are mixed and ball-milled by weight at a ball-milling speed of 1000-1500 r / min for 2 hours. After the ball-milling is completed, the mixture is filtered and dried to obtain a modified fiber agent.

[0044] The silane coupling agent of this embodiment is silane coupling agent KH550.

[0045] The preparation method of the modified filler of this embodiment is:

[0046] S11: preparing a sodium dodecylbenzene sulfonate solution with a mass fraction of 5-7%, and then adding 2-3 parts of phosphate buffer solution and 1-2 parts of sodium carboxymethyl cellulose to 5-8 parts of the sodium dodecylbenzene sulfonate solution by weight, stirring sufficiently to obtain a filler treatment solution;

[0047] S12: Add 3-5 parts of barium sulfate and 1-3 parts of wood ash to 6-9 parts of filler treatment liquid by weight, and then add 2-3 parts of burnt talcum powder, stir, filter and dry after stirring to obtain a modified filler.

[0048] The pH value of the phosphate buffer solution in this example is 5.5.

[0049] The stirring speed of the stirring process in this embodiment is 450-550 r / min, stirring is 1 hour, and the stirring temperature is 50-55°C.

[0050] A method for preparing a SBA high-elastic composite material in this embodiment includes the following steps:

[0051] The raw materials were weighed according to their weight, and added into a mixer in sequence for mixing at a mixing temperature of 110-120°C for 10 minutes. The mixed material was granulated in a granulator with a particle size of 3 mm, and then foamed in a foaming machine at a foaming temperature of 170°C for 5 minutes. Finally, the material was cooled to room temperature to obtain an SBA high-elastic composite material.

[0052] The invention also provides an application of the SBA high-elastic composite material in shoe materials.

[0053] Example 1: A SBA high-elastic composite material, comprising the following raw materials in parts by weight:

[0054] EVA 45 parts, POE 30 parts, SEBS 15 parts, functional additives 8 parts, modified fillers 6 parts, nano zinc oxide 3 parts, antioxidants 2 parts, foaming agents 1 part, calcium stearate 2 parts, crosslinking agents 1 part.

[0055] The foaming agent in this embodiment is azodicarbonamide; the cross-linking agent is dicumyl peroxide; and the antioxidant is antioxidant 1010.

[0056] The preparation method of the functional additive of this embodiment is:

[0057] S01: dissolving tris(hydroxymethyl)aminomethane in distilled water at a weight ratio of 2:7, and adjusting the pH to 8.5 with hydrochloric acid to obtain a Tris-HCl buffer solution;

[0058] Add 2 parts of silane coupling agent KH560 and 2 parts of fiber modification agent to 7 parts of Tris-HCl buffer solution by weight, stir well, and obtain fiber modification liquid;

[0059] S02: Ultrasonic mixing of europium oxide, 55% by mass urea solution and 10% by mass lanthanum chloride solution in a weight ratio of 4:6:2, after the ultrasonic treatment is completed, the mixture is filtered and dried to obtain a europium oxide agent;

[0060] S03: The europium oxide agent and the fiber modification liquid are ball-milled at a weight ratio of 2:5, with a ball-milling speed of 1500 r / min for 2 h. After the ball-milling is completed, the mixture is filtered and dried to obtain a functional additive.

[0061] The ultrasonic power of the ultrasonic mixing treatment in S02 of this embodiment is 450W, and the ultrasonic treatment is performed for 1 hour.

[0062] The preparation method of the modified fiber agent of this embodiment is:

[0063] Silane coupling agent KH550, polyvinyl alcohol and water were stirred at a weight ratio of 1:2:4 at 65°C for 1 hour at a stirring speed of 150 r / min. After the stirring was completed, 4% of the total amount of water was added with nano-titanium dioxide, and the stirring temperature and speed were maintained for another 1 hour to obtain a modified solution;

[0064] 2 parts of nano calcium carbonate, 3 parts of sepiolite fiber, 5 parts of modified solution and 1 part of sodium lignin sulfonate were mixed and ball-milled by weight at a ball-milling speed of 1000 r / min for 2 hours. After the ball-milling was completed, the mixture was filtered and dried to obtain a modified fiber agent.

[0065] The silane coupling agent of this embodiment is silane coupling agent KH550.

[0066] The preparation method of the modified filler of this embodiment is:

[0067] S11: preparing a 5% by weight sodium dodecylbenzene sulfonate solution, and then adding 2 parts by weight of phosphate buffer solution and 1 part by weight of sodium carboxymethyl cellulose to 5 parts by weight of the sodium dodecylbenzene sulfonate solution, stirring sufficiently to obtain a filler treatment solution;

[0068] S12: Add 3 parts of barium sulfate and 1 part of wood ash to 6 parts of filler treatment liquid by weight, then add 2 parts of burnt talcum powder, stir and treat, filter and dry after stirring to obtain a modified filler.

[0069] The pH value of the phosphate buffer solution in this example is 5.5.

[0070] The stirring speed of the stirring process in this embodiment is 450 r / min, the stirring time is 1 hour, and the stirring temperature is 50°C.

[0071] A method for preparing a SBA high-elastic composite material in this embodiment includes the following steps:

[0072] The raw materials were weighed according to their weight, and added into a mixer in sequence for mixing at a mixing temperature of 110° C. for 10 min. The mixed material was granulated in a granulator with a particle size of 3 mm, and then foamed in a foaming machine at a foaming temperature of 170° C. for 5 min. Finally, the material was cooled to room temperature to obtain an SBA high-elastic composite material.

[0073] Example 2: A SBA high-elastic composite material, comprising the following raw materials in parts by weight:

[0074] EVA 50 parts, POE 35 parts, SEBS 20 parts, functional additives 12 parts, modified fillers 9 parts, nano zinc oxide 5 parts, antioxidants 3 parts, foaming agents 3 parts, calcium stearate 3 parts, crosslinking agents 2 parts.

[0075] The foaming agent in this embodiment is azodicarbonamide; the cross-linking agent is dicumyl peroxide; and the antioxidant is antioxidant 1010.

[0076] The preparation method of the functional additive of this embodiment is:

[0077] S01: dissolving tris(hydroxymethyl)aminomethane in distilled water at a weight ratio of 2:7, and adjusting the pH to 8.5 with hydrochloric acid to obtain a Tris-HCl buffer solution;

[0078] Add 4 parts of silane coupling agent KH560 and 3 parts of fiber modification agent to 11 parts of Tris-HCl buffer solution by weight, stir well, and obtain fiber modification solution;

[0079] S02: Ultrasonic mixing of europium oxide, 55% by mass urea solution and 10% by mass lanthanum chloride solution in a weight ratio of 5:7:2, after the ultrasonic treatment is completed, the mixture is filtered and dried to obtain a europium oxide agent;

[0080] S03: ball-milling the europium oxide agent and the fiber modification liquid at a weight ratio of 2:5, with a ball-milling speed of 1500 r / min for 2 h. After the ball-milling is completed, the mixture is filtered and dried to obtain a functional additive.

[0081] The ultrasonic power of the ultrasonic mixing treatment in S02 of this embodiment is 500W, and the ultrasonic treatment is performed for 1 hour.

[0082] The preparation method of the modified fiber agent of this embodiment is:

[0083] Silane coupling agent KH550, polyvinyl alcohol and water were stirred at a weight ratio of 1:2:4 at 65°C for 1 hour at a stirring speed of 200 r / min. After the stirring was completed, nano titanium dioxide was added at a level of 7% of the total amount of water, and the stirring temperature and speed were maintained and the stirring was continued for 1 hour to obtain a modified solution;

[0084] 5 parts of nano calcium carbonate, 5 parts of sepiolite fiber, 8 parts of modified solution and 3 parts of sodium lignin sulfonate were mixed and ball-milled by weight at a ball-milling speed of 1500 r / min for 2 hours. After the ball-milling was completed, the mixture was filtered and dried to obtain a modified fiber agent.

[0085] The silane coupling agent of this embodiment is silane coupling agent KH550.

[0086] The preparation method of the modified filler of this embodiment is:

[0087] S11: preparing a 7% sodium dodecylbenzene sulfonate solution, and then adding 3 parts of phosphate buffer solution and 2 parts of sodium carboxymethyl cellulose to 8 parts of the sodium dodecylbenzene sulfonate solution by weight, stirring sufficiently to obtain a filler treatment solution;

[0088] S12: Add 5 parts of barium sulfate and 3 parts of wood ash to 9 parts of filler treatment liquid by weight, then add 3 parts of burnt talcum powder, stir and treat, filter and dry after stirring to obtain a modified filler.

[0089] The pH value of the phosphate buffer solution in this example is 5.5.

[0090] The stirring speed of the stirring process in this embodiment is 550 r / min, stirring is 1 hour, and the stirring temperature is 55°C.

[0091] A method for preparing a SBA high-elastic composite material in this embodiment includes the following steps:

[0092] The raw materials were weighed according to their weight, and added into a mixer in sequence for mixing at a mixing temperature of 120° C. for 10 min. The mixed material was granulated in a granulator with a particle size of 3 mm, and then foamed in a foaming machine at a foaming temperature of 170° C. for 5 min. Finally, the material was cooled to room temperature to obtain an SBA high-elastic composite material.

[0093] Example 3: A SBA high-elastic composite material, comprising the following raw materials in parts by weight:

[0094] EVA 47.5 parts, POE 32.5 parts, SEBS 17.5 parts, functional additives 10 parts, modified fillers 7.5 parts, nano zinc oxide 4 parts, antioxidant 2.5 parts, foaming agent 2 parts, calcium stearate 2.5 parts, cross-linking agent 1.5 parts.

[0095] The foaming agent in this embodiment is azodicarbonamide; the cross-linking agent is dicumyl peroxide; and the antioxidant is antioxidant 1010.

[0096] The preparation method of the functional additive of this embodiment is:

[0097] S01: dissolving tris(hydroxymethyl)aminomethane in distilled water at a weight ratio of 2:7, and adjusting the pH to 8.5 with hydrochloric acid to obtain a Tris-HCl buffer solution;

[0098] Add 3 parts of silane coupling agent KH560 and 2.5 parts of fiber modification agent to 9 parts of Tris-HCl buffer solution by weight, stir well, and obtain fiber modification liquid;

[0099] S02: Ultrasonic mixing of europium oxide, 55% by mass urea solution and 10% by mass lanthanum chloride solution in a weight ratio of 4.5:6.5:2, after the ultrasonic treatment is completed, the mixture is filtered and dried to obtain a europium oxide agent;

[0100] S03: The europium oxide agent and the fiber modification liquid are ball-milled at a weight ratio of 2:5, with a ball-milling speed of 1500 r / min for 2 h. After the ball-milling is completed, the mixture is filtered and dried to obtain a functional additive.

[0101] The ultrasonic mixing treatment in S02 of this embodiment has an ultrasonic power of 475 W and is carried out for 1 hour.

[0102] The preparation method of the modified fiber agent of this embodiment is:

[0103] Silane coupling agent KH550, polyvinyl alcohol and water were stirred at a weight ratio of 1:2:4 at 65°C for 1 hour at a stirring speed of 175 r / min. After the stirring was completed, 5.5% of the total amount of water was added with nano-titanium dioxide, and the stirring temperature and speed were maintained and the stirring was continued for 1 hour to obtain a modified solution;

[0104] 3.5 parts of nano calcium carbonate, 4 parts of sepiolite fiber, 6.5 parts of modified solution and 2 parts of sodium lignin sulfonate were mixed and ball-milled by weight at a ball-milling speed of 1250 r / min for 2 hours. After the ball-milling was completed, the mixture was filtered and dried to obtain a modified fiber agent.

[0105] The silane coupling agent of this embodiment is silane coupling agent KH550.

[0106] The preparation method of the modified filler of this embodiment is:

[0107] S11: preparing a 6% sodium dodecylbenzene sulfonate solution, and then adding 2.5 parts of phosphate buffer solution and 1.5 parts of sodium carboxymethyl cellulose to 6.5 parts of the sodium dodecylbenzene sulfonate solution by weight, stirring sufficiently to obtain a filler treatment solution;

[0108] S12: Add 4 parts of barium sulfate and 2 parts of wood ash to 7.5 parts of filler treatment liquid by weight, and then add 2.5 parts of burnt talcum powder, stir and treat. After stirring, filter and dry to obtain a modified filler.

[0109] The pH value of the phosphate buffer solution in this example is 5.5.

[0110] The stirring speed of the stirring process in this embodiment is 500 r / min, the stirring time is 1 hour, and the stirring temperature is 52.5°C.

[0111] A method for preparing a SBA high-elastic composite material in this embodiment includes the following steps:

[0112] The raw materials were weighed according to their weight, and added into a mixer in sequence for mixing at a mixing temperature of 115° C. for 10 min. The mixed material was granulated in a granulator with a particle size of 3 mm, and then foamed in a foaming machine at a foaming temperature of 170° C. for 5 min. Finally, the material was cooled to room temperature to obtain an SBA high-elastic composite material.

[0113] Comparative Example 1:

[0114] The difference from Example 3 is that no functional additive is added.

[0115] Comparative Example 2:

[0116] The difference from Example 3 is that no europium oxide agent is added to the functional additive.

[0117] Comparative Example 3:

[0118] The difference from Example 3 is that the europium oxide agent is directly replaced by the europium oxide raw material.

[0119] Comparative Example 4:

[0120] The difference from Example 3 is that no fiber modification liquid is added to the functional additive.

[0121] Comparative Example 5:

[0122] The difference from Example 3 is that the Tris-HCl buffer solution in the fiber modification solution is replaced by water, and the silane coupling agent KH560 is not added.

[0123] Comparative Example 6:

[0124] The difference from Example 3 is that no fiber-modifying agent is added to the fiber-modifying liquid.

[0125] Comparative Example 7:

[0126] The difference from Example 3 is that no modified filler is added.

[0127] Comparative Example 8:

[0128] The difference from Example 3 is that barium sulfate and wood ash are not added to the modified filler.

[0129] Comparative Example 9:

[0130] The difference from Example 3 is that calcined talc is used as the modified filler.

[0131] Comparative Example 10:

[0132] The difference from Example 3 is that the modified filler is not treated with a filler treatment liquid.

[0133] The tearing properties, hardness and elastic properties of the SBA high elastic composite materials of Examples 1 to 3 and Comparative Examples 1 to 10 were tested under conventional conditions. The test results are shown in Table 1.

[0134] Table 1 Performance test results of the products of Examples 1 to 3 and Comparative Examples 1 to 10 under normal conditions:

[0135] It can be seen from comparative examples 1-10 and embodiments 1-3 that the product of embodiment 3 of the present invention has excellent longitudinal tear strength, and at the same time, excellent Shore hardness and resilience performance. The three properties can be improved in a coordinated manner. The longitudinal tear strength can be as high as 199.4 kgf / cm, the Shore hardness can be as high as 89, and the resilience can be as high as 86%.

[0136] Based on the above tests, the scratch resistance and flexural stability of the product were further tested. The product was scraped with a load of 10N for 12 hours and then flexed 10,000 times to test the scratch resistance and flexural stability of the product. That is, the tearing performance, hardness and elasticity of the product were tested under the conditions of scraping and flexing. The test results are shown in Table 2.

[0137] Table 2 Performance test results of products of Examples 1 to 3 and Comparative Examples 1 to 10 under scraping and flexing conditions:

[0138]

[0139] From the above performance tests, it can be seen that the product of Example 3 of the present invention has excellent scratch resistance and flexural stability. No functional additives or modified fillers are added to the product, and the performance of the product has a significant deterioration trend. The coordinated cooperation of the two and the synergistic effect of the product have the most significant performance effect.

[0140] When no europium oxide agent is added to the functional additive, the europium oxide agent is directly replaced by europium oxide raw material, no fiber modification liquid is added to the functional additive, the Tris-HCl buffer solution in the fiber modification liquid is replaced by water, and no silane coupling agent KH560 is added, and no modified fiber agent is added to the fiber modification liquid, the performance of the product has a trend of deterioration to varying degrees. The functional additive prepared by using the fiber modification liquid obtained by the method of the present invention and the europium oxide agent has the most significant product performance effect; and when no modified fiber agent is added to the fiber modification liquid, the performance of the product has a relatively obvious trend of deterioration;

[0141] The performance of the products showed a trend of deterioration to varying degrees when barium sulfate and wood ash were not added to the modified filler, calcined talc was not added to the modified filler, and filler treatment liquid was not used in the modified filler. The modified filler obtained by the specific method of the present invention had the most significant product performance effect.

[0142] The present invention further explores the product performance through the preparation of modified fiber agent.

[0143] Experimental Example 1:

[0144] The same as Example 3, the only difference is that no nano calcium carbonate is added in the preparation of the modified fiber agent.

[0145] Experimental Example 2:

[0146] The same as Example 3, except that no sepiolite fiber was added in the preparation of the modified fiber agent.

[0147] Experimental Example 3:

[0148] The same as Example 3, except that sodium lignin sulfonate was not added in the preparation of the modified fiber agent.

[0149] Experimental Example 4:

[0150] The same as Example 3, the only difference is that the modified solution is replaced by water in the preparation of the modified fiber agent.

[0151] Experimental Example 5:

[0152] The same as Example 3, the only difference is that no nano titanium dioxide is added to the modified solution.

[0153] Experimental Example 6:

[0154] The same as Example 3, the only difference is that the silane coupling agent KH550 and polyvinyl alcohol are not added to the modified solution.

[0155] Based on the scratch resistance and flexural stability tests, the product performance test results of Experimental Examples 1 to 6 are shown in Table 3.

[0156] Table 3 Performance test results of products of Experimental Examples 1 to 6 under scraping and flexing conditions:

[0157]

[0158] It can be seen from Experimental Examples 1 to 6 that when sepiolite fiber is not added in the preparation of the modified fiber agent and water is used instead of the modified solution, the performance of the product deteriorates significantly. Secondly, when nano calcium carbonate and nano titanium dioxide are not added, the performance also shows a significant deterioration trend. When sodium lignin sulfonate is not added in the preparation of the modified fiber agent, and silane coupling agent KH550 and polyvinyl alcohol are not added to the modified solution, the performance of the product has a deterioration trend. Only the modified fiber agent prepared by the specific method of the present invention has the most significant performance effect of the product. When other methods are used instead, the performance effect is not as significant as that of the present invention.

[0159] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0160] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A SBA high elastic composite material, characterized in that: It includes the following raw materials in parts by weight: EVA 45-50 parts, POE 30-35 parts, SEBS 15-20 parts, functional additives 8-12 parts, modified fillers 6-9 parts, nano zinc oxide 3-5 parts, antioxidants 2-3 parts, foaming agents 1-3 parts, calcium stearate 2-3 parts, cross-linking agents 1-2 parts; The preparation method of the functional additive is: S01: dissolving tris(hydroxymethyl)aminomethane in distilled water at a weight ratio of 2:7, and adjusting the pH to 8.5 with hydrochloric acid to obtain a Tris-HCl buffer solution; Add 2 to 4 parts of silane coupling agent KH560 and 2 to 3 parts of fiber modification agent to 7 to 11 parts of Tris-HCl buffer solution by weight, stir well, and obtain fiber modification solution; The preparation method of the modified fiber agent is: Silane coupling agent KH550, polyvinyl alcohol and water were stirred at a weight ratio of 1:2:4 at 65°C for 1 hour at a stirring speed of 150-200 r / min. After the stirring was completed, 4-7% of the total amount of water was added with nano-titanium dioxide, and the stirring temperature and speed were maintained and the stirring was continued for 1 hour to obtain a modified solution; 2-5 parts of nano calcium carbonate, 3-5 parts of sepiolite fiber, 5-8 parts of modified solution and 1-3 parts of sodium lignin sulfonate are mixed and ball-milled by weight, the ball-milling speed is 1000-1500 r / min, the ball-milling is performed for 2 hours, and after the ball-milling is completed, the mixture is filtered and dried to obtain a modified fiber agent; S02: Ultrasonic mixing of europium oxide, 55% by mass urea solution and 10% by mass lanthanum chloride solution in a weight ratio of (4-5):(6-7):2, after the ultrasonic treatment is completed, the mixture is filtered and dried to obtain a europium oxide agent; S03: ball milling the europium oxide agent and the fiber modification liquid at a weight ratio of 2:5, at a ball milling speed of 1500 r / min, for 2 h. After the ball milling is completed, the mixture is filtered and dried to obtain a functional additive; The preparation method of the modified filler is: S11: preparing a sodium dodecylbenzene sulfonate solution with a mass fraction of 5-7%, and then adding 2-3 parts of phosphate buffer solution and 1-2 parts of sodium carboxymethyl cellulose to 5-8 parts of the sodium dodecylbenzene sulfonate solution by weight, stirring sufficiently to obtain a filler treatment solution; S12: Add 3-5 parts of barium sulfate and 1-3 parts of wood ash to 6-9 parts of filler treatment liquid by weight, and then add 2-3 parts of burnt talcum powder, stir, filter and dry after stirring to obtain a modified filler.

2. The SBA high-elastic composite material according to claim 1, characterized in that: The foaming agent is azodicarbonamide.

3. The SBA high-elastic composite material according to claim 1, characterized in that: The cross-linking agent is dicumyl peroxide.

4. The SBA high-elastic composite material according to claim 1, characterized in that: The antioxidant is antioxidant 1010.

5. The SBA high-elastic composite material according to claim 1, characterized in that: The ultrasonic mixing treatment in S02 has an ultrasonic power of 450-500 W and is carried out for 1 hour.

6. The SBA high-elastic composite material according to claim 1, characterized in that: The pH value of the phosphate buffer solution is 5.5; the stirring speed of the stirring treatment is 450-550 r / min, stirring for 1 hour, and the stirring temperature is 50-55° C.

7. A method for preparing a SBA high-elastic composite material, for preparing the SBA high-elastic composite material as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: The raw materials were weighed according to their weight, and added into a mixer in sequence for mixing at a mixing temperature of 110-120°C for 10 minutes. The mixed material was granulated in a granulator with a particle size of 3 mm, and then foamed in a foaming machine at a foaming temperature of 170°C for 5 minutes. Finally, the material was cooled to room temperature to obtain an SBA high-elastic composite material.

8. Application of an SBA high elastic composite material in shoe materials, characterized in that: The SBA high-elastic composite material as claimed in any one of claims 1 to 6 is used in shoe materials.

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