TPU elastic master batch, elastic adhesive lining and production process thereof

Abstract

The present application relates to the technical field of functional master batch and adhesive lining, and particularly relates to a TPU elastic master batch, elastic adhesive lining and a production process of the TPU elastic master batch, the production process of the TPU elastic master batch comprises the following steps: weighing raw materials according to weight parts: TPU, filling agent based on functional improvement, modified nano titanium oxide agent, coupling agent KH560 and calcium stearate; melt blending, extruding and granulating the above raw materials, the rotating speed of the extruder is 150 r / min, the extrusion temperature is 200 DEG C, and the TPU elastic master batch is obtained. The TPU elastic master batch adopts TPU as a matrix, cooperates with the filling agent based on functional improvement and the modified nano titanium oxide agent as functional additives, and adds the coupling agent KH560 and the calcium stearate for blending, and is granulated by melt blending and extrusion; the elastic adhesive lining prepared from the TPU elastic master batch has the coordinated improvement of the elastic property, the air permeability and the water repellency, and the salt corrosion stability effect of the product is remarkable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of functional master batch and adhesive lining, in particular to a TPU elastic master batch, an elastic adhesive lining and a production process thereof. BACKGROUND

[0002] The layer structure of spandex cloth is that hot melt adhesive films are compounded on both sides of a spandex woven base cloth, the elasticity of the spandex intermediate cloth is used to compensate for the insufficient elasticity of the hot melt adhesive film itself, the elastic performance is enhanced, and in use, the hot melt adhesive films on both sides are hot melt bonded with the face cloth and the lining cloth of the clothes, and are mainly applied to elastic parts such as underwear and underpants.

[0003] Since the specific gravity of the spandex intermediate cloth is large, it is a common practice in the art to replace the spandex intermediate cloth with melt-blown TPU and retain the hot melt adhesive films on both sides, and in order to optimize the elastic performance of the product, the existing TPU hot melt adhesive film material has poor air permeability and water repellency, it is difficult to realize coordinated improvement of the performance of the product, and the product has poor salt corrosion stability, which limits the use efficiency of the product. Therefore, it is necessary to develop an elastic adhesive lining and a functional master batch thereof. SUMMARY

[0004] In view of the defects of the prior art, the purpose of the present application is to provide a TPU elastic master batch, an elastic adhesive lining and a production process thereof to solve the problems raised in the background art.

[0005] The technical problem solved by the present application adopts the following technical scheme:

[0006] The present application provides a production process of a functional master batch, comprising the following steps:

[0007] Step one, weigh the raw materials according to the weight parts:

[0008] 55-60 parts of TPU, 5-8 parts of a functional improvement-based filling agent, 3-5 parts of a modified nano-titanium oxide agent, 2-4 parts of a coupling agent KH560, and 3-5 parts of calcium stearate;

[0009] Step two, melt blend and extrude the above raw materials to obtain a TPU elastic master batch, the rotating speed of the extruder is 150 r / min, and the extrusion temperature is 200 DEG C.

[0010] Preferably, the preparation method of the functional improvement-based filling agent is:

[0011] S01: calcium carbonate is added to a 5-8% sodium dodecylbenzenesulfonate solution according to a weight ratio of 3:5 and stirred uniformly to obtain a calcium carbonate solution;

[0012] 4-7 parts of glass beads, 2-3 parts of carboxymethyl cellulose sodium, and 5-8 parts of a 5% dopamine hydrochloride solution are uniformly blended according to the weight parts to obtain a glass bead solution.

[0013] S02: The calcium carbonate liquid and the glass microbead liquid are subjected to primary ball milling treatment at a weight ratio of 3:5, and after the ball milling is completed, filtration and drying are performed to obtain a filling agent;

[0014] S03: 5-8 parts of the nano-silicon oxide liquid and 3-5 parts of the filling agent are subjected to secondary ball milling treatment, and after the ball milling is completed, filtration and drying are performed to obtain a filling agent based on functional improvement.

[0015] Preferably, the primary ball milling treatment has a ball milling speed of 1000-1500 r / min and a ball milling time of 1 h; and the secondary ball milling treatment has a ball milling speed of 750-850 r / min and a ball milling time of 2 h.

[0016] Preferably, the nano-silicon oxide liquid is a solution of nano-silicon dioxide, boron nitride and sodium hexametaphosphate at a weight ratio of (2-5):3:(7-9).

[0017] Preferably, the mass fraction of the sodium hexametaphosphate solution is 5-8%.

[0018] Preferably, the preparation method of the modified nano-titanium oxide agent is as follows:

[0019] S101: The nano-titanium oxide is first placed in a proton irradiation box and irradiated for 1 h at an irradiation power of 350-400 W, and after the irradiation is completed, the irradiated nano-titanium oxide is obtained.

[0020] S102: The silane coupling agent KH560, ethanol and a 5% mass fraction chitosan aqueous solution are uniformly blended at a weight ratio of 4:7:5 to obtain a silane coupling liquid.

[0021] 3-5 parts of diatomite, 4-6 parts of kaolin and 5-9 parts of the strong liquid are uniformly mixed and subjected to ball milling treatment at a ball milling speed of 1000-1500 r / min for 2 h, and after the ball milling is completed, filtration and drying are performed to obtain a modified additive.

[0022] The modified additive and the silane coupling liquid are uniformly stirred at a weight ratio of 3:5 to obtain a silane coupling modified liquid.

[0023] S103: The irradiated nano-titanium oxide and the silane coupling modified liquid are subjected to ultrasonic modification treatment at a weight ratio of 5:8, and after the ultrasonic treatment is completed, filtration and drying are performed to obtain a modified nano-titanium oxide agent.

[0024] Preferably, the ultrasonic modification treatment has an ultrasonic power of 350-400 W and an ultrasonic time of 1 h.

[0025] Preferably, the preparation method of the strong liquid is as follows:

[0026] 2-3 parts of barium zirconate, 1-2 parts of cerium oxide and 6-9 parts of sodium silicate solution are uniformly blended by weight parts to obtain a modified sodium silicate solution; then 4-7 parts of silicon carbide whisker, 3-5 parts of periclase powder are added into 5-8 parts of the modified sodium silicate solution to continue blending fully by weight parts to obtain a strong liquid.

[0027] Preferably, the mass fraction of the sodium silicate solution is 2-5%.

[0028] The application further provides a TPU elastic master batch produced by the production process of the TPU elastic master batch.

[0029] The application further provides a production process of an elastic adhesive lining, which uses the TPU elastic master batch and comprises the following steps:

[0030] The TPU elastic master batch is sent into a melt-blowing machine for melt-blowing treatment at a melt-blowing temperature of 210-230 DEG C, and the elastic adhesive lining is obtained after the melt-blowing is completed.

[0031] The application further provides an elastic adhesive lining produced by the production process of the elastic adhesive lining.

[0032] Compared with the prior art, the application has the following beneficial effects:

[0033] 1. The TPU elastic master batch of the elastic adhesive lining adopts TPU as a matrix, and is blended by adding a coupling agent KH560 and calcium stearate as functional additives based on a functionally improved filling agent and a modified nano-titanium oxide agent, and is finally melt-blown to obtain the elastic adhesive lining after melt blending and extrusion granulation, so that the elastic performance, air permeability and water repellency of the elastic adhesive lining are coordinately improved, and the salt corrosion stability of the elastic adhesive lining product is significantly improved.

[0034] 2. The filling agent based on functional improvement is uniformly dispersed by treating calcium carbonate with a sodium dodecyl benzene sulfonate solution, and is further improved by first ball milling of glass bead liquid, so that the glass beads, sodium carboxymethyl cellulose and 5% mass fraction of dopamine hydrochloride solution in the glass bead liquid are improved, the glass beads and calcium carbonate are supplemented to the system to enhance the interface between the raw materials in the system and improve the water repellent point, and the water repellency is enhanced, and the nano-silicon dioxide, boron nitride and sodium hexametaphosphate solution in the nano-silicon dioxide liquid are further optimized by second ball milling of the nano-silicon dioxide liquid, so that the high specific surface area structure of the nano-silicon dioxide is supplemented to the boron nitride system to further enhance the interface connection of the filling agent based on functional improvement in the system and optimize the performance coordination of the system.

[0035] 3. The modified nano-titanium oxide agent uses nano-titanium oxide that has undergone irradiation treatment to optimize its activity. Simultaneously, it is further enhanced by ultrasonic treatment with a silane coupling modification solution. The silane coupling agent KH560, ethanol, and a 5% (w / w) chitosan aqueous solution in the silane coupling modification solution are mutually harmonized to enhance the hydrophobicity and interfacial dispersibility of the modified nano-titanium oxide system. Furthermore, the diatomaceous earth, kaolin, and high-efficiency liquid in the silane coupling modification solution are optimized, using porous diatomaceous earth combined with layered kaolin as the base. The liquid enhances the system's air permeability. Simultaneously, the silicon carbide whiskers and periclase powder in the high-efficiency liquid are blended and optimized with modified sodium silicate solution. The whisker structure of silicon carbide whiskers is combined with periclase powder, and the modified sodium silicate solution obtained by blending barium zirconate, cerium oxide, and sodium silicate solution improves the whisker system. The resulting high-efficiency liquid better matches and coordinates diatomaceous earth and kaolin, thereby further enhancing the system's elasticity, air permeability, water repellency, and salt corrosion resistance. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The production process of TPU elastic masterbatch in this embodiment includes the following steps:

[0038] Step 1: Weigh the raw materials according to their weight proportions:

[0039] 55-60 parts TPU, 5-8 parts functionally improved filler, 3-5 parts modified nano-titanium oxide agent, 2-4 parts coupling agent KH560, and 3-5 parts calcium stearate;

[0040] Step 2: Melt and blend the above raw materials, then extrude and granulate them. The extruder speed is 150 r / min and the extrusion temperature is 200℃ to obtain TPU elastic masterbatch.

[0041] The preparation method of the functionally improved filler in this embodiment is as follows:

[0042] S01: Add calcium carbonate to a sodium dodecylbenzenesulfonate solution with a mass fraction of 5-8% at a weight ratio of 3:5 and stir until homogeneous to obtain calcium carbonate solution;

[0043] 4-7 parts by weight of glass microspheres, 2-3 parts by weight of sodium carboxymethyl cellulose, and 5-8 parts by weight of 5% dopamine hydrochloride solution are mixed evenly to obtain glass microsphere solution.

[0044] S02: The calcium carbonate liquid and the glass microbead liquid are subjected to primary ball milling treatment at a weight ratio of 3:5. After the ball milling is completed, the mixture is filtered and dried to obtain the filling agent;

[0045] S03: 5-8 parts of the nano-silicon oxide liquid and 3-5 parts of the filling agent are subjected to secondary ball milling treatment at a weight ratio. After the ball milling is completed, the mixture is filtered and dried to obtain the filling agent based on functional improvement.

[0046] The primary ball milling treatment in this embodiment is carried out at a ball milling speed of 1000-1500 r / min for 1 h. The secondary ball milling treatment is carried out at a ball milling speed of 750-850 r / min for 2 h.

[0047] The nano-silicon oxide liquid in this embodiment is a solution of nano-silicon dioxide, boron nitride and sodium hexametaphosphate at a weight ratio of (2-5):3:(7-9).

[0048] The mass fraction of the sodium hexametaphosphate solution in this embodiment is 5-8%.

[0049] The preparation method of the modified nano-titanium oxide agent in this embodiment is as follows:

[0050] S101: The nano-titanium oxide is first placed in a proton irradiation box and irradiated for 1 h at an irradiation power of 350-400 W. After the irradiation is completed, the irradiated nano-titanium oxide is obtained.

[0051] S102: The silane coupling agent KH560, ethanol and a 5% mass fraction chitosan aqueous solution are uniformly blended at a weight ratio of 4:7:5 to obtain a silane coupling liquid.

[0052] 3-5 parts of diatomite, 4-6 parts of kaolin and 5-9 parts of the strong liquid are uniformly mixed and subjected to ball milling treatment at a ball milling speed of 1000-1500 r / min for 2 h. After the ball milling is completed, the mixture is filtered and dried to obtain the modified additive.

[0053] The modified additive and the silane coupling liquid are uniformly stirred at a weight ratio of 3:5 to obtain a silane coupling modified liquid.

[0054] S103: The irradiated nano-titanium oxide and the silane coupling modified liquid are subjected to ultrasonic modification treatment at a weight ratio of 5:8. After the ultrasonic treatment is completed, the mixture is filtered and dried to obtain the modified nano-titanium oxide agent.

[0055] The ultrasonic modification treatment in this embodiment is carried out at an ultrasonic power of 350-400 W for 1 h.

[0056] The preparation method of the strong liquid in this embodiment is as follows:

[0057] Blending 2-3 parts of barium zirconate, 1-2 parts of cerium oxide and 6-9 parts of sodium silicate solution uniformly by weight parts to obtain a modified sodium silicate solution; then adding 4-7 parts of silicon carbide whiskers and 3-5 parts of periclase powder into 5-8 parts of the modified sodium silicate solution and continuing to blend fully to obtain a strong liquid.

[0058] The mass fraction of the sodium silicate solution in the embodiment is 2-5%.

[0059] The TPU elastic master batch in the embodiment is produced by the production process of the TPU elastic master batch.

[0060] The production process of the elastic bonded lining in the embodiment uses the TPU elastic master batch and comprises the following steps.

[0061] The TPU elastic master batch is sent into a melt-blowing machine for melt-blowing treatment at a melt-blowing temperature of 210-230℃, and the elastic bonded lining is obtained after the melt-blowing is completed.

[0062] The elastic bonded lining in the embodiment is produced by the production process of the elastic bonded lining.

[0063] The production process of the TPU elastic master batch in the embodiment comprises the following steps.

[0064] Step one, weighing the raw materials according to weight parts:

[0065] 55 parts of TPU, 5 parts of the functional improvement-based filling agent, 3 parts of the modified nano-titanium oxide agent, 2 parts of the coupling agent KH560 and 3 parts of calcium stearate;

[0066] Step two, melt blending and extruding and granulating the above raw materials, the rotating speed of the extruder is 150 r / min, and the extruding temperature is 200℃, to obtain the TPU elastic master batch.

[0067] The preparation method of the functional improvement-based filling agent in the embodiment is as follows:

[0068] S01: adding calcium carbonate into a 5% sodium dodecylbenzenesulfonate solution according to a weight ratio of 3:5 and stirring uniformly to obtain a calcium carbonate liquid;

[0069] Blending 4 parts of glass beads, 2 parts of sodium carboxymethyl cellulose and 5 parts of a 5% dopamine hydrochloride solution uniformly by weight parts to obtain a glass bead liquid;

[0070] S02: performing primary ball milling on the calcium carbonate liquid and the glass bead liquid according to a weight ratio of 3:5, and after the ball milling is completed, performing suction filtration and drying to obtain the filling agent;

[0071] S03: 5 parts of nano-silicon oxide liquid and 3 parts of filling agent were subjected to secondary ball milling treatment, after the ball milling, filtration and drying were performed to obtain the filling agent based on functional improvement.

[0072] The primary ball milling treatment in this embodiment was performed at a ball milling speed of 1000 r / min for 1 h, and the secondary ball milling treatment was performed at a ball milling speed of 750 r / min for 2 h.

[0073] The nano-silicon oxide liquid in this embodiment was a solution of nano-silicon dioxide, boron nitride and sodium hexametaphosphate with a weight ratio of 2:3:7.

[0074] The mass fraction of the sodium hexametaphosphate solution in this embodiment was 5%.

[0075] The preparation method of the modified nano-titanium oxide agent in this embodiment was as follows:

[0076] S101: The nano-titanium oxide was first subjected to proton irradiation in a proton irradiation box for 1 h at an irradiation power of 350 W, and the irradiated nano-titanium oxide was obtained;

[0077] S102: The silane coupling agent KH560, ethanol and a 5% mass fraction chitosan aqueous solution were uniformly blended in a weight ratio of 4:7:5 to obtain a silane coupling liquid;

[0078] 3 parts of diatomite, 4 parts of kaolin and 5 parts of strong liquid were uniformly mixed and subjected to ball milling treatment at a ball milling speed of 1000 r / min for 2 h, and after the ball milling, filtration and drying were performed to obtain a modified additive;

[0079] The modified additive and the silane coupling liquid were uniformly stirred in a weight ratio of 3:5 to obtain a silane coupling modified liquid;

[0080] S103: The irradiated nano-titanium oxide and the silane coupling modified liquid were subjected to ultrasonic modification treatment in a weight ratio of 5:8, and after the ultrasonic treatment, filtration and drying were performed to obtain a modified nano-titanium oxide agent.

[0081] The ultrasonic power of the ultrasonic modification treatment in this embodiment was 350 W, and the ultrasonic treatment was performed for 1 h.

[0082] The preparation method of the strong liquid in this embodiment was as follows:

[0083] 2 parts of barium zirconate, 1 part of cerium oxide and 6 parts of sodium silicate solution were uniformly blended to obtain a modified sodium silicate liquid, and then 4 parts of silicon carbide whiskers and 3 parts of periclase powder were added to 5 parts of the modified sodium silicate liquid for further uniform blending to obtain the strong liquid.

[0084] The mass fraction of the sodium silicate solution in this embodiment was 2%.

[0085] The TPU elastic master batch of the embodiment is produced by the production process of the TPU elastic master batch.

[0086] The production process of the elastic adhesive lining of the embodiment uses the TPU elastic master batch and comprises the following steps.

[0087] The TPU elastic master batch is sent into a melt-blowing machine for melt-blowing treatment, the melt-blowing temperature is 210 DEG C, and the elastic adhesive lining is obtained after the melt-blowing treatment.

[0088] The elastic adhesive lining of the embodiment is produced by the production process of the elastic adhesive lining.

[0089] The production process of the TPU elastic master batch of the embodiment comprises the following steps.

[0090] Step one, the raw materials are weighed according to the weight parts:

[0091] 60 parts of TPU, 8 parts of the filling agent based on functional improvement, 5 parts of modified nano titanium oxide agent, 4 parts of coupling agent KH560, and 5 parts of calcium stearate;

[0092] Step two, the above raw materials are melt-blended and extruded into granules, the rotating speed of the extruder is 150 r / min, the extrusion temperature is 200 DEG C, and the TPU elastic master batch is obtained.

[0093] The preparation method of the filling agent based on functional improvement of the embodiment is as follows:

[0094] S01: calcium carbonate is added into a 8% sodium dodecylbenzenesulfonate solution according to a weight ratio of 3:5, and stirred uniformly to obtain a calcium carbonate liquid;

[0095] 7 parts of glass beads, 3 parts of sodium carboxymethyl cellulose, and 8 parts of 5% hydrochloric acid dopamine solution are uniformly blended according to weight parts to obtain a glass bead liquid;

[0096] S02: the calcium carbonate liquid and the glass bead liquid are subjected to primary ball milling treatment according to a weight ratio of 3:5, the ball milling is stopped, and the mixture is extracted and dried to obtain the filling agent;

[0097] S03: 8 parts of nano silicon oxide liquid and 5 parts of the filling agent are subjected to secondary ball milling treatment, the ball milling is stopped, and the mixture is extracted and dried to obtain the filling agent based on functional improvement.

[0098] The rotating speed of the primary ball milling treatment of the embodiment is 1500 r / min, and the ball milling time is 1 h; the rotating speed of the secondary ball milling treatment is 850 r / min, and the ball milling time is 2 h.

[0099] The nano silicon oxide liquid of the embodiment is a solution of nano silicon dioxide, boron nitride and sodium hexametaphosphate according to a weight ratio of 5:3:9.

[0100] The mass fraction of the sodium hexametaphosphate solution of the embodiment is 8%.

[0101] The preparation method of the modified nano titanium oxide agent of the embodiment is as follows:

[0102] S101: The nano titanium oxide is first placed in a proton irradiation box for irradiation for 1 h, and the irradiation power is 400 W. After the irradiation is completed, the irradiated nano titanium oxide is obtained.

[0103] S102: The silane coupling agent KH560, ethanol, and a 5% mass fraction chitosan aqueous solution are uniformly blended according to a weight ratio of 4:7:5 to obtain a silane coupling liquid.

[0104] The 5 parts of diatomite, 6 parts of kaolin, and 9 parts of the strong liquid are uniformly mixed and ball milled at a ball milling speed of 1500 r / min for 2 h. After the ball milling is completed, the mixture is suction filtered and dried to obtain a modified additive.

[0105] The modified additive and the silane coupling liquid are uniformly stirred according to a weight ratio of 3:5 to obtain a silane coupling modified liquid.

[0106] S103: The irradiated nano titanium oxide and the silane coupling modified liquid are ultrasonically modified according to a weight ratio of 5:8. After the ultrasonic modification is completed, the mixture is suction filtered and dried to obtain a modified nano titanium oxide agent.

[0107] The ultrasonic power of the ultrasonic modification of the embodiment is 400 W, and the ultrasonic modification is performed for 1 h.

[0108] The preparation method of the strong liquid of the embodiment is as follows:

[0109] The 3 parts of barium zirconate, 2 parts of cerium oxide, and 9 parts of a sodium silicate solution are uniformly blended to obtain a modified sodium silicate liquid. Then, 7 parts of silicon carbide whiskers and 5 parts of periclase powder are added to 8 parts of the modified sodium silicate liquid for further blending to obtain the strong liquid.

[0110] The mass fraction of the sodium silicate solution of the embodiment is 5%.

[0111] The TPU elastic master batch of the embodiment is produced by the production process of the TPU elastic master batch.

[0112] The production process of the elastic bonded lining of the embodiment uses the TPU elastic master batch and includes the following steps:

[0113] The TPU elastic master batch is fed into a melt blowing machine for melt blowing treatment at a melt blowing temperature of 230°C. After the melt blowing is completed, the elastic bonded lining is obtained.

[0114] The elastic bonded lining of the embodiment is produced by the production process of the elastic bonded lining.

[0115] Embodiment 3: A production process of a TPU elastic master batch, comprising the following steps:

[0116] Step one, the raw materials are weighed according to the weight parts:

[0117] 57.5 parts of TPU, 6.5 parts of functional improvement-based filling agent, 4 parts of modified nano-titanium oxide agent, 3 parts of coupling agent KH560, 4 parts of calcium stearate;

[0118] Step two, melt blending and extruding granulation of the above raw materials, the rotating speed of the extruder is 150 r / min, the extrusion temperature is 200℃, and the TPU elastic master batch is obtained.

[0119] The preparation method of the functional improvement-based filling agent in this embodiment is:

[0120] S01: The calcium carbonate is added into a 6.5% sodium dodecylbenzenesulfonate solution according to a weight ratio of 3:5 and stirred uniformly to obtain a calcium carbonate liquid;

[0121] The 5.5 parts of glass beads, 2.5 parts of carboxymethyl cellulose sodium, and 6.5 parts of 5% hydrochloric acid dopamine solution are uniformly blended according to the weight parts to obtain a glass bead liquid;

[0122] S02: The calcium carbonate liquid and the glass bead liquid are subjected to primary ball milling treatment according to a weight ratio of 3:5, after the ball milling is completed, suction filtration and drying are performed to obtain a filling agent;

[0123] S03: The 6.5 parts of nano-silicon oxide liquid and the 4 parts of filling agent are subjected to secondary ball milling treatment, after the ball milling is completed, suction filtration and drying are performed to obtain the functional improvement-based filling agent.

[0124] The primary ball milling treatment in this embodiment has a ball milling rotating speed of 1250 r / min and a ball milling time of 1 h; the secondary ball milling treatment has a ball milling rotating speed of 800 r / min and a ball milling time of 2 h.

[0125] The nano-silicon oxide liquid in this embodiment is a nano-silicon dioxide, boron nitride and 6.5% sodium hexametaphosphate solution according to a weight ratio of 3.5:3:8.

[0126] The mass fraction of the sodium hexametaphosphate solution in this embodiment is 6.5%.

[0127] The preparation method of the modified nano-titanium oxide agent in this embodiment is:

[0128] S101: The nano-titanium oxide is first placed in a proton irradiation box and irradiated for 1 h at an irradiation power of 375 W, after the irradiation is completed, the irradiated nano-titanium oxide is obtained;

[0129] S102: The silane coupling agent KH560, ethanol and 5% chitosan aqueous solution are uniformly blended according to a weight ratio of 4:7:5 to obtain a silane coupling liquid;

[0130] 4 parts of diatomite, 5 parts of kaolin and 7 parts of strong liquid were mixed and ball milled at a speed of 1250 r / min for 2 h. After ball milling, the mixture was filtered and dried to obtain a modified additive.

[0131] The modified additive and the silane coupling liquid were stirred uniformly at a weight ratio of 3:5 to obtain a silane coupling modified liquid.

[0132] S103: The irradiated nano titanium oxide and the silane coupling modified liquid were ultrasonically modified at a weight ratio of 5:8. After ultrasonic modification, the mixture was filtered and dried to obtain a modified nano titanium oxide agent.

[0133] The ultrasonic power of the ultrasonic modification in this embodiment was 375 W, and the ultrasonic time was 1 h.

[0134] The preparation method of the strong liquid in this embodiment was as follows:

[0135] 2.5 parts of barium zirconate, 1.5 parts of cerium oxide and 7 parts of sodium silicate solution were uniformly blended to obtain a modified sodium silicate liquid. Then, 5.5 parts of silicon carbide whiskers and 4 parts of periclase powder were added to 6.5 parts of the modified sodium silicate liquid for further blending to obtain a strong liquid.

[0136] The mass fraction of the sodium silicate solution in this embodiment was 3.5%.

[0137] A TPU elastic master batch in this embodiment was produced by the production process of the TPU elastic master batch.

[0138] A production process of an elastic bonded lining in this embodiment used the TPU elastic master batch and included the following steps:

[0139] The TPU elastic master batch was fed into a melt blowing machine for melt blowing treatment at a temperature of 220°C. After melt blowing, an elastic bonded lining was obtained.

[0140] An elastic bonded lining in this embodiment was produced by the production process of the elastic bonded lining.

[0141] Comparative Example 1:

[0142] Different from Example 3, no functional improvement-based filling agent was added.

[0143] Comparative Example 2:

[0144] Different from Example 3, no filling agent was added in the preparation of the functional improvement-based filling agent.

[0145] Comparative Example 3:

[0146] Different from Example 3, no calcium carbonate liquid was added in the filling agent.

[0147] Comparative Example 4:

[0148] The difference between Example 3 is that the glass microbead liquid is not added in the filler effect agent.

[0149] Comparative Example 5:

[0150] The difference between Example 3 is that the nano-silicon oxide liquid is not added in the filler effect agent preparation based on the functional improvement.

[0151] Comparative Example 6:

[0152] The difference between Example 3 is that the modified nano-titanium oxide agent is not added.

[0153] Comparative Example 7:

[0154] The difference between Example 3 is that the irradiated nano-titanium oxide is not added in the preparation of the modified nano-titanium oxide agent.

[0155] Comparative Example 8:

[0156] The difference between Example 3 is that the silane coupling modification liquid is not added in the preparation of the modified nano-titanium oxide agent.

[0157] Comparative Example 9:

[0158] The difference between Example 3 is that the modified additive is not added in the silane coupling modification liquid.

[0159] Comparative Example 10:

[0160] The difference between Example 3 is that the diatomite and kaolin are not added in the modified additive.

[0161] Comparative Example 11:

[0162] The difference between Example 3 is that the strong liquid is not added in the modified additive.

[0163] Comparative Example 12:

[0164] The difference between Example 3 is that the silicon carbide whisker and periclase powder are not added in the strong liquid.

[0165] Comparative Example 13:

[0166] The difference between Example 3 is that the barium zirconate and cerium oxide are not added in the strong liquid.

[0167] The elastic performance, air permeability and water repellency of the elastic adhesive backing products of Examples 1-3 and Comparative Examples 1-13 are tested under normal conditions and salt corrosion resistance conditions, and the salt corrosion resistance conditions are that the elastic adhesive backing products are placed in a 5% sodium chloride salt spray for 48h, and the test results are shown in Table 1.

[0168] Table 1 Performance test results of elastic adhesive backing products of Examples 1-3 and Comparative Examples 1-13:

[0169]

[0170] From the examples 1-3 and comparative examples 1-13, the elasticity, air permeability and contact angle of the elastic adhesive backing product of the present application example 3 can be improved in coordination, the elasticity, air permeability and water repellency of the elastic adhesive backing product are significantly improved, and the performance stability of the elastic adhesive backing product under salt spray conditions is significantly improved;

[0171] The performance of the product is obviously deteriorated without adding one of the functional improvement based filling agent and the modified nano titanium oxide agent in the TPU elastic master batch, and the performance of the product is most significant when the two are used in harmony.

[0172] The performance of the product is deteriorated to different degrees without adding the filling agent, the calcium carbonate liquid, the glass bead liquid, and the nano silicon oxide liquid in the preparation of the functional improvement based filling agent, and the performance of the product is most significant when the functional improvement based filling agent is prepared by the specific method of the present application.

[0173] The performance of the product is deteriorated to different degrees without adding the irradiated nano titanium oxide, the silane coupling modification liquid, the modified additive, the diatomite and kaolin, the strong liquid, the silicon carbide whisker and periclase powder, the barium zirconate and cerium oxide in the preparation of the modified nano titanium oxide agent and the modified additive.

[0174] The performance of the product is most significant when the modified nano titanium oxide agent is prepared by the silane coupling modification liquid and the irradiated nano titanium oxide.

[0175] The performance of the product is most significant when the strong liquid is prepared by the specific method of the present application, and the performance of the product is most significant when the modified additive is prepared by the specific strong liquid and the diatomite and kaolin, and the effect of the present application is not obvious when other methods are used instead.

[0176] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be included in the present application.

[0177] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A production process of TPU elastic masterbatch, characterized in that, It comprises the following steps: Step one, according to the weight parts of raw materials: 55-60 parts of TPU, 5-8 parts of functional improvement based filling agent, 3-5 parts of modified nano titanium oxide agent, 2-4 parts of coupling agent KH560, 3-5 parts of calcium stearate; The preparation method of the functional improvement based filling agent is: S01: calcium carbonate is added to a 5-8% sodium dodecylbenzenesulfonate solution according to a weight ratio of 3:5 and stirred uniformly to obtain a calcium carbonate liquid; According to the weight parts, 4-7 parts of glass microbeads, 2-3 parts of carboxymethyl cellulose sodium, and 5-8 parts of 5% mass fraction dopamine hydrochloride solution are uniformly blended to obtain a glass microbead liquid; S02: the calcium carbonate liquid and the glass microbead liquid are subjected to primary ball milling treatment according to a weight ratio of 3:5, after ball milling, filtration and drying, a filling agent is obtained; S03: 5-8 parts of nano silicon oxide liquid and 3-5 parts of filling agent are subjected to secondary ball milling treatment, after ball milling, filtration and drying, a functional improvement based filling agent is obtained; The nano silicon oxide liquid is a nano silicon dioxide, boron nitride and sodium hexametaphosphate solution according to a weight ratio of (2-5):3:(7-9), and the mass fraction of the sodium hexametaphosphate solution is 5-8%; The preparation method of the modified nano titanium oxide agent is: S101: nano titanium oxide is first placed in a proton irradiation box for irradiation for 1h, the irradiation power is 350-400W, after irradiation, irradiated nano titanium oxide is obtained; S102: silane coupling agent KH560, ethanol and 5% mass fraction chitosan aqueous solution are uniformly blended according to a weight ratio of 4:7:5 to obtain a silane coupling liquid; According to the weight parts, 3-5 parts of diatomite, 4-6 parts of kaolin and 5-9 parts of strong liquid are uniformly mixed and subjected to ball milling treatment, the ball milling speed is 1000-1500r / min, the ball milling time is 2h, after ball milling, filtration and drying, a modified additive is obtained; The modified additive and the silane coupling liquid are uniformly stirred according to a weight ratio of 3:5 to obtain a silane coupling modified liquid; S103: the irradiated nano titanium oxide and the silane coupling modified liquid are subjected to ultrasonic modification treatment according to a weight ratio of 5:8, after ultrasonic treatment, filtration and drying, a modified nano titanium oxide agent is obtained; The preparation method of the strong liquid is: According to the weight parts, 2-3 parts of barium zirconate, 1-2 parts of cerium oxide and 6-9 parts of 2-5% mass fraction sodium silicate solution are uniformly blended to obtain a modified sodium silicate liquid; According to the weight parts, 4-7 parts of silicon carbide whisker and 3-5 parts of periclase powder are added to 5-8 parts of the modified sodium silicate liquid for further uniform blending to obtain a strong liquid; Step two, melt blending, extrusion and granulation of the above raw materials, the speed of the extruder is 150r / min, the extrusion temperature is 200℃, and a TPU elastic masterbatch is obtained.

2. The process for the production of TPU elastomeric masterbatch as claimed in claim 1 wherein, The ball milling speed of the primary ball milling treatment is 1000-1500r / min, and the ball milling time is 1h; the ball milling speed of the secondary ball milling treatment is 750-850r / min, and the ball milling time is 2h.

3. The process for the production of TPU elastomeric masterbatch as claimed in claim 1 wherein, The ultrasonic power of the ultrasonic modification treatment is 350-400W, and the ultrasonic time is 1h.

4. A TPU elastic masterbatch produced by the production process of the TPU elastic masterbatch according to any one of claims 1 to 3.

5. A process for the production of an elastic bonded gasket using the TPU elastic masterbatch as claimed in claim 4, characterized in that, It comprises the following steps: The TPU elastic master batch is sent into a melt-blowing machine for melt-blowing treatment, the melt-blowing temperature is 210-230 ℃, and after the melt-blowing is completed, an elastic adhesive backing is obtained.

6. An elastic adhesive backing produced by the process for producing an elastic adhesive backing according to claim 5.

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