A thermal material and its preparation method and application

Abstract

The present application relates to a kind of warm-keeping materials and its preparation method and application, the preparation method includes the following steps: (1) using finishing liquid is padded to fabric, obtain dyed fabric;The component of the finishing liquid includes tungsten oxide;(2) printing paste is printed on the dyed fabric, obtain the warm-keeping material;The component of the printing paste includes lanthanum oxide.The warm-keeping material prepared by the preparation method provided in the present application can not only actively absorb light energy and convert it into heat energy in low temperature environment, but also can be warmed by far infrared radiation, so as to have the functions of light absorption and heat generation and far infrared radiation warming, and can achieve double warming effect, and the functional index is higher, and can realize multi-scene warm-keeping function.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textile materials, and particularly relates to a warm-keeping material and a preparation method and application thereof. BACKGROUND

[0002] With the continuous improvement of people's requirements for clothing comfort and functionality, traditional warm-keeping materials have been unable to meet the increasingly diverse needs of consumers. In outdoor sports, extreme weather and cold environments, materials that can both maintain a lightweight wearing experience and efficiently provide warm-keeping performance become particularly important.

[0003] The existing warm-keeping materials on the market often increase thickness or use traditional fillers for warmth, but these methods usually increase the weight and volume of the clothes, affecting the wearing comfort. Although some functional warm-keeping materials have certain temperature rise effects, their warm-keeping effects are mostly dependent on external temperature or heat generated by exercise, making it difficult to quickly warm up in low-temperature environments.

[0004] CN108576984A discloses a far-infrared warm-keeping fabric, and CN102860592A discloses a far-infrared multifunctional warm-keeping garment and a manufacturing method thereof. Although these far-infrared materials have good heat retention effects, they lack sufficient utilization of environmental light and cannot achieve the effect of actively absorbing heat.

[0005] Therefore, there is an urgent need to provide a new material that can actively absorb environmental light and convert it into heat energy, while utilizing far-infrared rays to achieve temperature rise and warm-keeping effects. SUMMARY

[0006] In view of the deficiencies of the prior art, the purpose of the present application is to provide a warm-keeping material and a preparation method and application thereof. Through the design of raw materials and processes, the warm-keeping material can actively absorb light energy and convert it into heat energy in a low-temperature environment, and can also achieve temperature rise and warm-keeping through far-infrared radiation, thereby simultaneously having the functions of light absorption and heat generation and far-infrared radiation temperature rise, achieving the effect of double warm-keeping, and having higher functional indicators, which can realize multi-scene warm-keeping functions.

[0007] To achieve this purpose, the present application adopts the following technical solutions:

[0008] In a first aspect, the present application provides a preparation method of a warm-keeping material, which comprises the following steps:

[0009] (1) using a finishing liquid to pad dye a fabric to obtain a dyed fabric; the components of the finishing liquid include tungsten oxide;

[0010] (2) printing a printing paste on the dyed fabric to obtain the warm-keeping material; the components of the printing paste include lanthanum oxide.

[0011] The present application applies tungsten oxide and lanthanum oxide on the same fabric through different processes, and realizes the double-warming effect of the warming material in the low-temperature environment through the composite technology of the light-absorbing material tungsten oxide and the far-infrared heating material lanthanum oxide, which can not only actively absorb light energy and convert it into heat energy, but also can warm through far-infrared radiation.

[0012] The following is a preferred technical solution of the present application, but not as a limitation of the technical solutions provided by the present application. Through the following preferred technical solution, the purpose and beneficial effects of the present application can be better achieved and realized.

[0013] As a preferred technical solution, the finishing liquid includes the following components in mass percentage:

[0014]

[0015] The dispersing dye in the finishing liquid is 5-8%, for example, it can be 5.2%, 5.4%, 5.6%, 5.8%, 6%, 6.2%, 6.4%, 6.6%, 6.8%, 7%, 7.2%, 7.4%, 7.6%, 7.8%, etc.

[0016] The mass percentage of tungsten oxide in the finishing liquid is 5-16%, for example, it can be 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, etc.

[0017] The mass percentage of the first cross-linking agent in the finishing liquid is 3-8%, for example, it can be 3.2%, 3.5%, 3.8%, 4%, 4.2%, 4.5%, 4.8%, 5%, 5.2%, 5.5%, 5.8%, 6%, 6.2%, 6.5%, 6.8%, 7%, 7.2%, 7.5%, 7.8%, etc.

[0018] The mass percentage of the surfactant in the finishing liquid is 10-12%, for example, it can be 10.2%, 10.4%, 10.6%, 10.8%, 11%, 11.2%, 11.4%, 11.6%, 11.8%, etc.

[0019] Preferably, the dispersing dye includes azo-type dispersing dye and / or heterocyclic-type dispersing dye.

[0020] Preferably, the first cross-linking agent includes polysiloxane and / or first polycarboxylic acid cross-linking agent.

[0021] Preferably, the first polycarboxylic acid cross-linking agent includes butane tetracarboxylic acid.

[0022] Preferably, the surfactant comprises any one or a combination of at least two of a secondary alkyl sulfonate, a sodium sulfonated fatty acid methyl ester, or sodium dodecyl benzene sulfonate.

[0023] Preferably, the components of the finishing liquid further comprise a first dispersant and / or a first binder.

[0024] Preferably, the first dispersant comprises any one or a combination of at least two of a fatty alcohol polyoxyethylene ether, a fatty acid polyoxyethylene ester, a naphthalene sulfonic acid dispersant, or a polycarboxylic acid dispersant.

[0025] Preferably, the mass percentage of the first dispersant in the finishing liquid is 10-15%, for example, it can be 10.2%, 10.5%, 10.8%, 11%, 11.2%, 11.5%, 11.8%, 12%, 12.2%, 12.5%, 12.8%, 13%, 13.2%, 13.5%, 13.8%, 14%, 14.2%, 14.5%, 14.8%, etc.

[0026] Preferably, the first binder comprises any one or a combination of at least two of a polyurethane binder, a polyvinyl acetate binder, a polyacrylate binder, or a butadiene binder.

[0027] Preferably, the mass percentage of the first binder in the finishing liquid is 4-10%, for example, it can be 4.2%, 4.5%, 4.8%, 5%, 5.2%, 5.5%, 5.8%, 6%, 6.2%, 6.5%, 6.8%, 7%, 7.2%, 7.5%, 7.8%, 8%, 8.2%, 8.5%, 8.8%, 9%, 9.2%, 9.5%, 9.8%, etc.

[0028] Preferably, the preparation method of the finishing liquid comprises the following steps:

[0029] (S1) mixing the disperse dye, the tungsten oxide, the first crosslinking agent, the surfactant, optionally the first dispersant, optionally the first binder, and part of the water to obtain a mixed liquid;

[0030] (S2) grinding the mixed liquid, and adding the remaining part of the water during the grinding process to obtain the finishing liquid.

[0031] Preferably, the mass ratio of the part of the water in step (S1) to the remaining part of the water in step (S2) is 1:(1.5-3), for example, it can be 1:1.6, 1:1.8, 1:2, 1:2.2, 1:2.4, 1:2.6, 1:2.8, etc.

[0032] Preferably, the grinding medium used in the grinding of step (S2) is zirconium beads.

[0033] Preferably, the rotation speed of the grinding of step (S2) is 6000-10000 rpm, for example, it can be 6500 rpm, 7000 rpm, 7500 rpm, 8000 rpm, 8500 rpm, 9000 rpm, 9500 rpm, etc.

[0034] Preferably, the time of the grinding of step (S2) is 60-90 min, for example, it can be 62 min, 65 min, 68 min, 70 min, 72 min, 75 min, 78 min, 80 min, 82 min, 85 min, 88 min, etc.

[0035] Preferably, the printing paste comprises the following components in terms of mass percentage:

[0036]

[0037] The mass percentage of lanthanum oxide in the printing paste is 10-16%, for example, it can be 10.2%, 10.5%, 10.8%, 11%, 11.2%, 11.5%, 11.8%, 12%, 12.2%, 12.5%, 12.8%, 13%, 13.2%, 13.5%, 13.8%, 14%, 14.2%, 14.5%, 14.8%, 15%, 15.2%, 15.5%, 15.8%, etc.

[0038] The mass percentage of volcanic rock in the printing paste is 5-8%, for example, it can be 5.2%, 5.4%, 5.6%, 5.8%, 6%, 6.2%, 6.4%, 6.6%, 6.8%, 7%, 7.2%, 7.4%, 7.6%, 7.8%, etc.

[0039] The mass percentage of the second crosslinking agent in the printing paste is 1-3%, for example, it can be 1.2%, 1.4%, 1.6%, 1.8%, 2%, 2.2%, 2.4%, 2.6%, 2.8%, etc.

[0040] Preferably, the second crosslinking agent comprises an epoxy compound crosslinking agent and / or a second polycarboxylic acid crosslinking agent.

[0041] Preferably, the epoxy compound crosslinking agent comprises trimethylolpropane triglycidyl ether.

[0042] Preferably, the second polycarboxylic acid crosslinking agent comprises maleic acid and / or itaconic acid.

[0043] Preferably, the components of the printing paste further comprise a second dispersant.

[0044] Preferably, the second dispersant includes any one or a combination of at least two of a super dispersant, a fatty alcohol polyoxyethylene ether, a naphthalene sulfonic acid dispersant, or a polycarboxylic acid dispersant.

[0045] Preferably, the mass percentage of the second dispersant in the printing paste is 5-8%, for example, can be 5.2%, 5.4%, 5.6%, 5.8%, 6%, 6.2%, 6.4%, 6.6%, 6.8%, 7%, 7.2%, 7.4%, 7.6%, 7.8%, etc.

[0046] Preferably, the components of the printing paste further include an amino carboxyl complexing agent.

[0047] Preferably, the mass percentage of the amino carboxyl complexing agent in the printing paste is 3-5%, for example, can be 3.2%, 3.4%, 3.6%, 3.8%, 4%, 4.2%, 4.4%, 4.6%, 4.8%, etc.

[0048] Preferably, the components of the printing paste further include a second binder.

[0049] Preferably, the second binder includes any one or a combination of at least two of a polyvinyl acetate binder, a polyacrylate binder, or a butadiene binder.

[0050] Preferably, the mass percentage of the second binder in the printing paste is 1-5%, for example, can be 1.2%, 1.5%, 1.8%, 2%, 2.2%, 2.5%, 2.8%, 3%, 3.2%, 3.5%, 3.8%, 4%, 4.2%, 4.5%, 4.8%, etc.

[0051] Preferably, the components of the printing paste further include a thickening agent.

[0052] Preferably, the thickening agent includes an acrylic copolymer thickening agent and / or a polyurethane thickening agent.

[0053] Preferably, the mass percentage of the thickening agent in the printing paste is 3-4%, for example, can be 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, etc.

[0054] Preferably, the particle size of the tungsten oxide is 50-200 nm, for example, can be 60 nm, 70 nm, 80 nm, 90 nm, 100 nm, 110 nm, 120 nm, 130 nm, 140 nm, 150 nm, 160 nm, 170 nm, 180 nm, 190 nm, etc.

[0055] Preferably, the D50 The particle size of the lanthanum oxide is preferably 40-200 nm, for example, 50 nm, 60 nm, 70 nm, 80 nm, 90 nm, 100 nm, 110 nm, 120 nm, 130 nm, 140 nm, 150 nm, 160 nm, 170 nm, 180 nm, 190 nm, etc.

[0056] The particle size of the lanthanum oxide is preferably 40-200 nm, for example, 50 nm, 60 nm, 70 nm, 80 nm, 90 nm, 100 nm, 110 nm, 120 nm, 130 nm, 140 nm, 150 nm, 160 nm, 170 nm, 180 nm, 190 nm, etc.

[0057] Preferably, the material of the fabric comprises polyester or nylon.

[0058] Preferably, the thickness of the fabric is 0.04-0.08 mm, for example, 0.042 mm, 0.045 mm, 0.048 mm, 0.05 mm, 0.052 mm, 0.055 mm, 0.058 mm, 0.06 mm, 0.062 mm, 0.065 mm, 0.068 mm, 0.07 mm, 0.072 mm, 0.075 mm, 0.078 mm, etc.

[0059] Preferably, the padding process is two-dip-two-pad.

[0060] Preferably, the padding has a pick-up rate of 70-99%, for example, 72%, 74%, 76%, 78%, 80%, 82%, 84%, 86%, 88%, 90%, 92%, 94%, 96%, 98%, etc.

[0061] The calculation method of the pick-up rate is: pick-up rate = (total mass of the fabric after padding - mass of the fabric before padding) / mass of the fabric before padding x 100%.

[0062] Preferably, the finishing liquid is diluted with water to a finishing liquid with a mass percentage of 10-25% before padding, for example, 11%, 12%, 14%, 16%, 17%, 18%, 20%, 22%, 24%, etc.

[0063] Preferably, the padding is followed by the steps of first drying, baking, washing, and second drying.

[0064] Preferably, the temperature of the first drying and the second drying is independently 60-80℃, for example, can be 62℃, 64℃, 66℃, 68℃, 70℃, 72℃, 74℃, 76℃, 78℃, etc.

[0065] Preferably, the time of the first drying and the second drying is independently 10-40min, for example, can be 12min, 14min, 16min, 18min, 20min, 22min, 24min, 26min, 28min, 30min, 32min, 34min, 36min, 38min, etc.

[0066] Preferably, the temperature of the baking is 180-200℃, for example, can be 182℃, 184℃, 186℃, 188℃, 190℃, 192℃, 194℃, 196℃, 198℃, etc.

[0067] Preferably, the time of the baking is 10-15min, for example, can be 10.5min, 11min, 11.5min, 12min, 12.5min, 13min, 13.5min, 14min, 14.5min, etc.

[0068] Preferably, the temperature of the water washing is 80-85℃, for example, can be 80.5℃, 81℃, 81.5℃, 82℃, 82.5℃, 83℃, 83.5℃, 84℃, 84.5℃, etc.

[0069] Preferably, the time of the water washing is 15-30min, for example, can be 15.5min, 16min, 16.5min, 17min, 17.5min, 18min, 18.5min, 19min, 19.5min, 20min, 22min, 24min, 26min, 28min, etc.

[0070] Preferably, the printing method comprises rotary screen printing and / or flat screen printing.

[0071] Preferably, the preparation method specifically comprises the following steps:

[0072] (1) diluting the finishing liquid with water to a padding finishing liquid with the mass percentage of the finishing liquid being 10-25%, using the padding finishing liquid to pad the polyester or nylon with the thickness of 0.04-0.08mm by the processing method of two immersions and two pad-dings, and then sequentially performing the first drying, the baking, the water washing and the second drying to obtain the dyed polyester or nylon;

[0073] The finishing liquid comprises the following components in the mass percentage:

[0074]

[0075] (2) printing the printing paste on the dyed polyester or nylon to obtain the warm-keeping material;

[0076] The printing paste comprises the following components in mass percentage:

[0077]

[0078] In the second aspect, the application provides a warm-keeping material prepared by the preparation method in the first aspect.

[0079] In the third aspect, the application provides an application of the warm-keeping material in the second aspect to outdoor clothes, winter clothes, outdoor equipment, tents or sleeping bags.

[0080] Compared with the prior art, the application has the following beneficial effects:

[0081] (1) The tungsten oxide and lanthanum oxide are applied on the same fabric by different processes in the application, and the fabric has the functions of light absorption, heat generation, far infrared radiation and temperature rise through the interaction of the two, so that the double warm-keeping effect is achieved, the functional indicators are higher, and the multi-scene warm-keeping function can be realized.

[0082] (2) The maximum temperature rise of the light heat storage of the warm-keeping material provided by the application can reach 18-26℃, and the far infrared temperature rise can reach 3.2-3.7℃. DETAILED DESCRIPTION

[0083] In order to facilitate the understanding of the application, the application is illustrated by the following embodiments. It should be understood by those skilled in the art that the embodiments are only used to facilitate the understanding of the application and should not be regarded as a specific limitation on the application.

[0084] The sources of some components in the preparation examples and the comparative preparation examples are as follows:

[0085] (1) Tungsten oxide: purchased from Jinlei Technology, particle size is 50 nm;

[0086] (2) Crosslinking agent

[0087] Polysiloxane: purchased from Anhui Mingyi Silicone Co., Ltd., CAS number: 68952-30-7;

[0088] Epoxy compound crosslinking agent: purchased from Hubei Xingheng Industry, model number is 110-18-9;

[0089] (3) Surfactant

[0090] Secondary alkyl sulfonate: purchased from Clariant, model number is 68037-49-0;

[0091] Sulfobutyric acid methyl ester sodium salt, purchased from Hubei Zhonglong Kangsheng, model 93348-22-2;

[0092] (4) dispersant

[0093] Fatty alcohol polyoxyethylene ether, purchased from Luon, model R128348;

[0094] Fatty acid polyoxyethylene ester, purchased from Wuhan Jixin Yibang, model 106-08-1;

[0095] Polycarboxylic acid dispersant, purchased from Bangpu Chemical, model BP5040;

[0096] (5) binder

[0097] Polyurethane binder, purchased from Xinhui Chemical, model Xh-fw201;

[0098] Polyvinyl acetate binder, purchased from Nantong Runfeng Petroleum Chemical Co., Ltd., model C2233;

[0099] Polyacrylate binder, purchased from Dongguan Taiyang Textile Products Co., Ltd., model TY-3565S / 3566S;

[0100] (6) Lanthanum oxide: purchased from Jinlei Technology, particle size 40 nm, CAS: 1312-81-8;

[0101] (7) Acrylic acid copolymer thickener: purchased from Guangzhou Yirui Chemical YR807;

[0102] (8) Volcanic rock: purchased from Shijiazhuang Jueo New Material, model 3001;

[0103] (9) Disperse dye: blue 20, purchased from Zhejiang Wanfeng Chemical Co., Ltd.;

[0104] (10) Ammonia carboxyl complexing agent: purchased from Shanghai Hengyuan Biology, CAS number: 6381-92-6.

[0105] Preparation example 1-1

[0106] A finishing liquid, in mass percentage, includes the following components:

[0107]

[0108] The preparation method of the finishing liquid includes:

[0109] (S1) Mix the disperse dye, tungsten oxide, polysiloxane, surfactant, dispersant, binder and part of water (25% of the total mass of water) and stir them evenly by a stirrer to obtain a mixed liquid;

[0110] (S2) adding the mixed solution into a vertical grinder and adding zirconium beads for grinding, the rotation speed of the grinder is 8500 rpm, the grinding time is 80 min, the particle size of the solid particles in the mixed solution is tested every 10 min during the grinding process, and the D 50 The particle size of the solid particles in the mixed solution is controlled to be 200 nm, and the remaining part of water is added according to the grinding condition, so as to obtain the finishing solution.

[0111] Preparation Example 1-2 to Preparation Example 1-5, Comparative Preparation Example 1-1 to Comparative Preparation Example 1-2

[0112] A finishing solution, components of the finishing solution are shown in Table 1, the unit of the amount of each component in Table 1 is “%”, “ / ” in Table 1 indicates that the substance is not added, and the preparation method of the finishing solution is the same as that of Preparation Example 1-1.

[0113] Table 1

[0114]

[0115] Preparation Example 2-1

[0116] A printing paste, the printing paste comprises the following components in mass percentage:

[0117]

[0118] The preparation method of the printing paste comprises:

[0119] The above substances are mixed and stirred uniformly to obtain the printing paste.

[0120] Preparation Example 2-2 to Preparation Example 2-5, Comparative Preparation Example 2-1 to Comparative Preparation Example 2-2

[0121] A printing paste, components of the printing paste are shown in Table 2, the unit of the amount of each component in Table 2 is “%”, “ / ” in Table 2 indicates that the substance is not added, and the preparation method of the printing paste is the same as that of Preparation Example 2-1.

[0122] Table 2

[0123]

[0124]

[0125] Example 1

[0126] A warm-keeping material and a preparation method thereof, the preparation method comprises the following steps:

[0127] (1) The finishing liquid provided in Preparation Example 1-1 is diluted with distilled water into a padding finishing liquid with a mass percentage of 10% of the finishing liquid, and the padding finishing liquid is used to carry out one-bath padding finishing on 100% polyester with a thickness of 0.08 mm by using a two-dip-two-pad processing method, and the padding rate is 90%; the process is: dip→pad→dip→pad→first drying→curing→water washing→second drying, to obtain dyed fabric; the temperature of the two drying processes is 80°C, and the time is 30 min; the temperature of the curing is 180°C, and the time is 10 min; the temperature of the water washing is 85°C, and the time is 30 min;

[0128] (2) The printing paste provided in Preparation Example 2-1 is printed on the dyed fabric by flat screen printing to obtain the warm-keeping material.

[0129] Example 2

[0130] A warm-keeping material and a preparation method thereof, the preparation method comprising the following steps:

[0131] (1) The finishing liquid provided in Preparation Example 1-2 is diluted with distilled water into a padding finishing liquid with a mass percentage of 15% of the finishing liquid, and the padding finishing liquid is used to carry out one-bath padding finishing on 100% nylon with a thickness of 0.08 mm by using a two-dip-two-pad processing method, and the padding rate is 85%; the process is: dip→pad→dip→pad→first drying→curing→water washing→second drying, to obtain dyed fabric; the temperature of the two drying processes is 80°C, and the time is 30 min; the temperature of the curing is 180°C, and the time is 10 min; the temperature of the water washing is 85°C, and the time is 15 min;

[0132] (2) The printing paste provided in Preparation Example 2-2 is printed on the dyed fabric by flat screen printing to obtain the warm-keeping material.

[0133] Example 3

[0134] A warm-keeping material and a preparation method thereof, the preparation method comprising the following steps:

[0135] (1) The finishing liquid provided in Preparation Example 1-3 is diluted with distilled water into a padding finishing liquid with a mass percentage of 25% of the finishing liquid, and the padding finishing liquid is used to carry out one-bath padding finishing on 100% polyester with a thickness of 0.08 mm by using a two-dip-two-pad processing method, and the padding rate is 85%; the process is: dip→pad→dip→pad→first drying→curing→water washing→second drying, to obtain dyed fabric; the temperature of the two drying processes is 80°C, and the time is 30 min; the temperature of the curing is 180°C, and the time is 10 min; the temperature of the water washing is 85°C, and the time is 15 min;

[0136] (2) The printed paste provided by Preparation Example 2-3 is printed on the dyed fabric by rotary screen printing to obtain the thermal material.

[0137] Example 4

[0138] A thermal material and a preparation method thereof, which are different from Example 1 in that the finishing liquor provided by Preparation Example 1-1 is replaced by the finishing liquor provided by Preparation Example 1-4 in step (1), and the printing paste provided by Preparation Example 2-1 is replaced by the printing paste provided by Preparation Example 2-4 in step (2), and the remaining raw materials, process parameters and steps are the same as those of Example 1.

[0139] Example 5

[0140] A thermal material and a preparation method thereof, which are different from Example 1 in that the finishing liquor provided by Preparation Example 1-1 is replaced by the finishing liquor provided by Preparation Example 1-5 in step (1), and the printing paste provided by Preparation Example 2-1 is replaced by the printing paste provided by Preparation Example 2-5 in step (2), and the remaining raw materials, process parameters and steps are the same as those of Example 1.

[0141] Comparative Example 1

[0142] A thermal material and a preparation method thereof, which are different from Example 1 in that the finishing liquor provided by Preparation Example 1-1 is replaced by the finishing liquor provided by Comparative Preparation Example 1-1 in step (1), and the remaining raw materials, process parameters and steps are the same as those of Example 1.

[0143] Comparative Example 2

[0144] A thermal material and a preparation method thereof, which are different from Example 1 in that the finishing liquor provided by Preparation Example 1-1 is replaced by the finishing liquor provided by Comparative Preparation Example 1-2 in step (1), and the remaining raw materials, process parameters and steps are the same as those of Example 1.

[0145] Comparative Example 3

[0146] A thermal material and a preparation method thereof, which are different from Example 1 in that the printing paste provided by Preparation Example 2-1 is replaced by the printing paste provided by Comparative Preparation Example 2-1 in step (2), and the remaining raw materials, process parameters and steps are the same as those of Example 1.

[0147] Comparative Example 4

[0148] A thermal material and a preparation method thereof, which are different from Example 1 in that the printing paste provided by Preparation Example 2-1 is replaced by the printing paste provided by Comparative Preparation Example 2-2 in step (2), and the remaining raw materials, process parameters and steps are the same as those of Example 1.

[0149] Performance test

[0150] (1) Far-infrared temperature rise: test according to the test method provided in GB / T 30127-2013;

[0151] (2) Light absorption and heat generation: test according to the test method provided in GB / T 18319-2019 "Light heat storage performance test method".

[0152] The warm-keeping materials provided in Examples 1-5 and Comparative Examples 1-4 are tested according to the above method, and the test results are shown in Table 3 below:

[0153] Table 3

[0154] Far infrared temperature rise / °C Light heat storage maximum temperature rise / °C Example 1 3.6 25 Example 2 3.4 20 Example 3 3.7 24 Example 4 3.2 26 Example 5 3.5 18 Comparative Example 1 2.1 10 Comparative Example 2 2.4 14 Comparative Example 3 2.3 16 Comparative Example 4 2.4 16

[0155] As can be seen from the test data in Table 3, by applying tungsten oxide and lanthanum oxide on the same fabric through different processes, the obtained warm-keeping material has the functions of light absorption and heat generation and far-infrared radiation temperature rise through the interaction of the two, achieving double warm-keeping effect.

[0156] As can be seen from Comparative Example 1, the warm-keeping material has a significant decrease in near-infrared light absorption rate, resulting in a decrease in light heat storage temperature rise, because the finishing liquid does not contain tungsten oxide.

[0157] As can be seen from Comparative Examples 2-4, the warm-keeping material lacks tungsten oxide or lanthanum oxide, and both the far-infrared temperature rise and the maximum light heat storage temperature rise are reduced, because the synergistic effect of tungsten oxide and lanthanum oxide can form a "light-heat-radiation" coupling interface, the light-heat layer of tungsten oxide provides a heat source for lanthanum oxide, and the lanthanum oxide particles enhance far-infrared radiation through La-O bond vibration; lacking either of the two, the heat transfer path is broken, the interface thermal resistance increases, resulting in a decrease in temperature rise effect.

[0158] The applicant declares that the above examples are used to illustrate the detailed process equipment and process flow of the present application, but the present application is not limited to the above detailed process equipment and process flow, that is, it does not mean that the present application must rely on the above detailed process equipment and process flow to be implemented. Those skilled in the art should understand that any improvement on the present application, equivalent replacement of each raw material of the product of the present application, addition of auxiliary ingredients, selection of specific methods, etc. fall within the scope of protection and disclosure of the present application.

Claims

1. A method for producing a thermal material, characterized by, The preparation method comprises the following steps: (1) using finishing liquid to pad dye the fabric, obtaining dyed fabric; The finishing liquid comprises the following components in percentage of mass: dispersion dye 5-8% tungsten oxide 5-16% first crosslinking agent 3-8% surfactant 10-12% first dispersant 10-15% first adhesive 4-10% water in balance; The first crosslinking agent comprises polysiloxane and / or first polycarboxylic acid crosslinking agent; The surfactant comprises any one or combination of at least two of secondary alkyl sulfonate, sulfobenzene fatty acid sodium salt or sodium dodecyl benzene sulfonate; (2) printing printing paste on the dyed fabric, obtaining the warm-keeping material; The printing paste comprises the following components in percentage of mass: lanthanum oxide 10-16% volcanic rock 5-8% second crosslinking agent 1-3% amino carboxyl complexing agent 3-5% second dispersant 5-8% second adhesive 1-5% thickening agent 3-4% water in balance; The second crosslinking agent comprises epoxy compound crosslinking agent and / or second polycarboxylic acid crosslinking agent.

2. The production method according to claim 1, characterized by, The dispersion dye comprises azo type dispersion dye and / or heterocyclic type dispersion dye.

3. The preparation method according to claim 1, characterized in that, The first polycarboxylic acid crosslinking agent comprises butane tetracarboxylic acid.

4. The method of claim 1, wherein, The first dispersant comprises any one or combination of at least two of fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ester, naphthalene sulfonic acid dispersant or polycarboxylic acid dispersant.

5. The preparation method according to claim 1, characterized in that, The first adhesive comprises any one or combination of at least two of polyurethane adhesive, polyvinyl acetate adhesive, polyacrylate adhesive or butadiene adhesive.

6. The method of claim 1, wherein, The preparation method of the finishing liquid comprises the following steps: (S1) mixing the dispersion dye, the tungsten oxide, the first crosslinking agent, the surfactant, the first dispersant, the first adhesive and part of water, obtaining mixed liquid; (S2) grinding the mixed liquid, adding the remaining part of water in the grinding process, obtaining the finishing liquid.

7. The preparation method according to claim 6, characterized in that, The grinding medium used in the grinding of step (S2) is zirconium beads.

8. The preparation method according to claim 6, characterized in that, The rotation speed of the grinding of step (S2) is 6000-10000 rpm.

9. The preparation method according to claim 6, characterized in that, The grinding time of step (S2) is 60-90 min.

10. The method of claim 1, wherein, The epoxy compound crosslinking agent comprises trimethylolpropane triglycidyl ether.

11. The method of claim 1, wherein, The second polycarboxylic acid crosslinking agent comprises maleic acid and / or itaconic acid.

12. The method of claim 1, wherein, The second dispersant comprises any one or combination of at least two of fatty alcohol polyoxyethylene ether, naphthalene sulfonic acid dispersant or polycarboxylic acid dispersant.

13. The method of claim 1, wherein, The second adhesive comprises any one or combination of at least two of polyvinyl acetate adhesive, polyacrylate adhesive or butadiene adhesive.

14. The method of claim 1, wherein, The thickening agent comprises acrylic acid copolymer thickening agent and / or polyurethane thickening agent.

15. The method of claim 1, wherein, The particle size of the tungsten oxide is 50-200 nm.

16. The method of claim 1, wherein, D of the solid particles in the finishing liquid 50 The particle size is 50-300 nm.

17. The method of claim 1, wherein, The particle size of the lanthanum oxide is 40-200 nm.

18. The method of claim 1, wherein, The material of the fabric comprises polyester or nylon.

19. The method of claim 1, wherein, The thickness of the fabric is 0.04-0.08 mm.

20. The method of claim 1, wherein, The processing method of the pad dyeing is two-dip-two-pad.

21. The method of claim 1, wherein, The padding is performed before the padding liquid is diluted with water to a padding liquid with a mass percentage of 10-25%.

22. The method of claim 1, wherein, The padding is performed before the padding liquid is diluted with water to a padding liquid with a mass percentage of 10-25%.

23. The method of claim 1, wherein, The printing method includes rotary screen printing and / or flat screen printing.

24. The method of claim 1, wherein, The preparation method specifically includes the following steps: (1) The padding liquid is diluted with water to a padding liquid with a mass percentage of 10-25%, and the padding liquid is used to pad the polyester or nylon with a thickness of 0.04-0.08 mm by a two-dip-two-pad processing method, and then first drying, baking, washing, and second drying are sequentially performed to obtain dyed polyester or nylon; The padding liquid includes the following components in mass percentage: 5-8% of a disperse dye 5-16% of tungsten oxide 3-8% of a first cross-linking agent 10-12% of a surfactant 10-15% of a first dispersant 4-10% of a first binder The balance of water; The first cross-linking agent includes polysiloxane and / or a first polycarboxylic acid cross-linking agent; The surfactant includes any one or a combination of at least two of a secondary alkyl sulfonate, a sulfobutyric acid methyl ester sodium salt, or sodium dodecylbenzenesulfonate; (2) The printing paste is printed on the dyed polyester or nylon to obtain the thermal material; The printing paste includes the following components in mass percentage: 10-16% of lanthanum oxide 5-8% of volcanic rock 1-3% of a second cross-linking agent 3-5% of an amino carboxyl complexing agent 5-8% of a second dispersant 1-5% of a second binder 3-4% of a thickening agent The balance of water; The second cross-linking agent includes an epoxy compound cross-linking agent and / or a second polycarboxylic acid cross-linking agent.

25. A thermal material, characterized by, The thermal material is prepared by the preparation method in any one of claims 1-24.

26. Use of the thermal material in claim 25 in outdoor clothing, a tent, or a sleeping bag.

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