Temperature-sensitive color-changing latex gloves and preparation method thereof
By introducing temperature-sensitive color-changing capsules into latex gloves, the problem of latex gloves not being able to sense temperature has been solved, realizing the temperature-sensitive color-changing function and improving the user's safety and experience.
Patent Information
- Application Number
- CN202511072703.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-01
- Publication Date
- 2025-11-18
AI Technical Summary
Existing latex gloves cannot sense the temperature of liquids or objects they come into contact with, making it impossible for users to be aware of temperature changes in a timely manner.
Thermosensitive color-changing capsules are introduced into latex gloves. By using natural latex and thermosensitive color-changing latex layers in the inner and outer layers of the gloves respectively, thermosensitive color-changing capsules are prepared using materials such as crystal violet lactone and 2'-chloro-6'-(diethylamino)fluorane. These capsules are then integrated into the gloves through a specific process to achieve temperature-sensitive color-changing function.
It enables latex gloves to change color based on temperature, allowing users to understand the temperature changes of objects they come into contact with based on the color changes of the gloves, thus improving safety and user experience.
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of latex gloves, in particular to a temperature-sensitive color-changing latex glove and a preparation method thereof. BACKGROUND
[0002] Latex gloves are generally made of natural latex. The glove mold is cleaned, and then the glove mold is sequentially immersed in coagulant, latex, vulcanized, and dried, etc. Finally, the glove is demolded. The latex glove has certain elasticity, wear resistance and tear resistance, and can be used in industries, families and medical industries. It is a common hand protection product in life and work.
[0003] The latex glove has certain temperature resistance. Below 60℃, the molecular structure of the latex is stable and will not be damaged. This feature ensures the reliability of the latex glove. However, for some special scenarios, such as production activities that are sensitive to the temperature of the contact liquid or contact object, the user cannot feel the temperature of the contact liquid because they are wearing gloves, which is not conducive to production. SUMMARY
[0004] In view of the defects of the prior art, one of the purposes of the present application is to provide a temperature-sensitive color-changing latex glove. The glove has temperature sensing and color changing capabilities, which facilitates the user to learn the temperature of the contact liquid or contact object in time. The second purpose of the present application is to provide a preparation method of the temperature-sensitive color-changing latex glove. The preparation process is simple and can realize industrial production.
[0005] One of the purposes of the present application is achieved by the following technical scheme:
[0006] A temperature-sensitive color-changing latex glove includes an inner natural latex layer and an outer temperature-sensitive color-changing latex layer. The natural latex layer includes the following components by weight: 90-100 parts of natural latex, 8-10 parts of vulcanizing agent, and 5-7 parts of accelerator. The temperature-sensitive color-changing latex layer includes the following components by weight: 90-100 parts of natural latex, 8-10 parts of vulcanizing agent, 5-7 parts of accelerator, and 20-30 parts of temperature-sensitive color-changing capsules.
[0007] As a preferred, the temperature-sensitive color-changing capsules include the following preparation steps:
[0008] The bisphenol A is added into tetradecanol, stirred at 70-80℃, then the crystal violet lactone and 2'-chloro-6'-(diethylamino)fluorane are added in sequence, and the stirring is continued, to obtain a core material; the core material, isocyanate and chain extender are stirred and mixed uniformly to obtain an oil phase; the emulsifier is added into water, stirred uniformly, then the oil phase is added and mixed uniformly to obtain a mixed emulsion; the unsaturated polyol and crosslinking agent are added into water, stirred uniformly, then the mixed emulsion is added drop by drop, and the stirring is carried out at 50-60℃, then after the washing, suction filtration and drying treatment, the temperature-sensitive color-changing capsule is obtained.
[0009] As preferred, the isocyanate is toluene diisocyanate, the chain extender is trimethylolpropane, the emulsifier is Tween 85, the crosslinking agent is glutaraldehyde, and the unsaturated polyol is 2-buten-1,4-diol.
[0010] As preferred, the particle size of the temperature-sensitive color-changing capsule is 4-8μm.
[0011] As preferred, the mass ratio of the bisphenol A to the tetradecanol is 1:(30-40).
[0012] As preferred, the mass ratio of the crystal violet lactone to the bisphenol A is 1:(2-4).
[0013] As preferred, the mass ratio of the 2'-chloro-6'-(diethylamino)fluorane to the bisphenol A is 1:(20-30).
[0014] As preferred, the vulcanizing agent is sulfur, and the accelerator is zinc dibutyl dithiocarbamate.
[0015] The second purpose of the present application is achieved by using the following technical scheme:
[0016] A preparation method of a temperature-sensitive color-changing latex glove, comprising the following preparation steps: a glove mold is sequentially immersed in a coagulant, a natural latex agent and a temperature-sensitive color-changing latex agent, and after each immersion, drying treatment is carried out, then vulcanization, drying, cooling and demolding treatment are sequentially carried out, to obtain the temperature-sensitive color-changing latex glove.
[0017] As preferred, the vulcanization temperature is 120-130℃.
[0018] The present application has the following beneficial effects:
[0019] (1) The crystal violet lactone, 2'-chloro-6'-(diethylamino) fluorescein, bisphenol A and tetradecanol are used as the core material of the temperature-sensitive color-changing capsule, and polyurethane is used as the capsule wall. On the one hand, polyurethane itself is colorless and transparent, and the use of polyurethane to wrap the core material will not cover the color of the core material. The color of the core material determines the color of the capsule, which is convenient for realizing the color-changing function identification of the temperature-sensitive color-changing capsule. On the other hand, polyurethane is stable and insoluble in water and other conventional solvents, and has a certain elasticity, which can be well dispersed in natural latex to improve the wear resistance and aging resistance of the glove.
[0020] (2) The crystal violet lactone and 2'-chloro-6'-(diethylamino) fluorescein are used as color developers, bisphenol A is used as a color developer, and tetradecanol is used as a solvent. The core material has two color-changing temperature characteristics. At the first color-changing temperature, the core material presents a red-purple color. Between the first color-changing temperature and the second color-changing temperature, the core material presents a red color. At the second color-changing temperature, the core material presents a colorless color. With the continuous increase of temperature, the color becomes lighter and lighter. According to the above characteristics, the temperature-sensitive color-changing latex glove has the temperature sensing color-changing ability, and the color will change with the change of temperature. DETAILED DESCRIPTION
[0021] In order to make the technical problems solved by the application, the technical solutions and beneficial effects clearer and more apparent, the following embodiments are combined to further illustrate the application.
[0022] Example 1
[0023] A temperature-sensitive color-changing latex glove, comprising the following preparation steps: sequentially immersing the glove mold in coagulant, natural latex agent and temperature-sensitive color-changing latex agent, and performing drying treatment after each immersion, the drying temperature is 70°C, and then performing vulcanization, drying, cooling and demolding treatment.
[0024] The natural latex agent comprises the following components by weight: natural latex 100 parts, sulfur 10 parts and zinc dibutyldithiocarbamate 7 parts. The temperature-sensitive color-changing latex layer comprises the following components by weight: natural latex 100 parts, sulfur 10 parts, zinc dibutyldithiocarbamate 7 parts and temperature-sensitive color-changing capsules 20 parts. The particle size of the temperature-sensitive color-changing capsules is 4-8 μm.
[0025] The temperature-sensitive color-changing capsule comprises the following preparation steps:
[0026] The bisphenol A is added into tetradecanol, the mass ratio of bisphenol A and tetradecanol is 1:30, and stirring is carried out at 70-80℃, then crystal violet lactone and 2'-chloro-6'-(diethylamino) fluorophore are added in sequence, the mass ratio of crystal violet lactone and bisphenol A is 1:4, the mass ratio of 2'-chloro-6'-(diethylamino) fluorophore and bisphenol A is 1:20, and stirring is continuously carried out, so that the core material is obtained; 30 parts by mass of the core material, 15 parts by mass of isocyanate and 20 parts by mass of chain extender are uniformly stirred and mixed, so that the oil phase is obtained; 80 parts by mass of emulsifier is added into water, and stirring is uniformly carried out, then the oil phase is uniformly mixed, so that the mixed emulsion is obtained; 35 parts by mass of unsaturated polyol and 20 parts by mass of crosslinking agent are added into water, and stirring is uniformly carried out, then the mixed emulsion is added drop by drop, and stirring reaction is carried out at 50-60℃, then after washing, suction filtration and drying treatment, the temperature-sensitive color-changing capsule is obtained.
[0027] The temperature test is carried out on the latex glove, and the test result shows that the glove presents purple red when the temperature is lower than 32℃, the glove presents red when the temperature is 30℃ and 38℃, and the glove presents colorless when the temperature is higher than 38℃, and the result shows that with the increase of temperature, the color of the glove gradually becomes lighter, and the purple color disappears first and then the red color disappears.
[0028] Example 2
[0029] A temperature-sensitive color-changing latex glove, comprising the following preparation steps: a glove mold is sequentially immersed in a coagulant, a natural latex agent and a temperature-sensitive color-changing latex agent, and drying treatment is carried out after each immersion, and the drying temperature is 70℃, and then vulcanization, drying, cooling and demolding treatment are sequentially carried out.
[0030] The natural latex agent comprises the following components in parts by weight: natural latex 90 parts, sulfur 9 parts and zinc dibutyldithiocarbamate 6 parts, the temperature-sensitive color-changing latex layer comprises the following components in parts by weight: natural latex 90 parts, sulfur 9 parts, zinc dibutyldithiocarbamate 6 parts and temperature-sensitive color-changing capsule 25 parts, and the particle size of the temperature-sensitive color-changing capsule is 4-8μm.
[0031] The temperature-sensitive color-changing capsule comprises the following preparation steps:
[0032] The bisphenol A is added into tetradecanol, the mass ratio of bisphenol A and tetradecanol is 1:40, and stirring is carried out at 70-80℃, then crystal violet lactone and 2'-chloro-6'-(diethylamino) fluorophore are added in sequence, the mass ratio of crystal violet lactone and bisphenol A is 1:3, the mass ratio of 2'-chloro-6'-(diethylamino) fluorophore and bisphenol A is 1:30, and continuous stirring is carried out, so as to obtain a core material; 25 parts by mass of the core material, 20 parts by mass of isocyanate and 25 parts by mass of chain extender are uniformly stirred and mixed, so as to obtain an oil phase; 80 parts by mass of emulsifier is added into water and uniformly stirred, and then the oil phase is uniformly mixed, so as to obtain a mixed emulsion; 35 parts by mass of unsaturated polyol and 15 parts by mass of crosslinking agent are added into water and uniformly stirred, and then the mixed emulsion is added drop by drop, and stirring reaction is carried out at 50-60℃, and then after washing, suction filtration and drying treatment, a temperature-sensitive color-changing capsule is obtained.
[0033] The temperature test is carried out on the latex glove, and the test results show that the glove presents a red-purple color when the temperature is lower than 30℃, the glove presents a red color when the temperature is 30℃ and 39℃, and the glove presents no color when the temperature is higher than 39℃, and the results show that with the increase of temperature, the color of the glove gradually becomes lighter, and the purple color disappears first and then the red color disappears.
[0034] Example 3
[0035] A temperature-sensitive color-changing latex glove, comprising the following preparation steps: a glove mold is sequentially immersed in a coagulant, a natural latex agent and a temperature-sensitive color-changing latex agent, and drying treatment is carried out after each immersion, and the drying temperature is 70℃, and then vulcanization, drying, cooling and demolding treatment are sequentially carried out.
[0036] The natural latex agent comprises the following components in parts by weight: natural latex 95 parts, sulfur 8 parts and zinc dibutyldithiocarbamate 5 parts, the temperature-sensitive color-changing latex layer comprises the following components in parts by weight: natural latex 95 parts, sulfur 8 parts, zinc dibutyldithiocarbamate 5 parts and temperature-sensitive color-changing capsules 30 parts, and the particle size of the temperature-sensitive color-changing capsules is 4-8μm.
[0037] The temperature-sensitive color-changing capsule comprises the following preparation steps:
[0038] The bisphenol A is added into tetradecanol, the mass ratio of bisphenol A and tetradecanol is 1:35, and stirring is carried out at 70-80℃, then crystal violet lactone and 2'-chloro-6'-(diethylamino) fluorophore are added in sequence, the mass ratio of crystal violet lactone and bisphenol A is 1:2, the mass ratio of 2'-chloro-6'-(diethylamino) fluorophore and bisphenol A is 1:25, and continuous stirring is carried out, so that the core material is obtained; 30 parts by mass of the core material, 20 parts by mass of isocyanate and 20 parts by mass of chain extender are uniformly stirred and mixed, so that the oil phase is obtained; 90 parts by mass of emulsifier is added into water, and stirring is carried out until uniform, then the oil phase is uniformly mixed, so that the mixed emulsion is obtained; 40 parts by mass of unsaturated polyol and 20 parts by mass of crosslinking agent are added into water, and stirring is carried out until uniform, then the mixed emulsion is added drop by drop, and stirring reaction is carried out at 50-60℃, then after washing, suction filtration and drying treatment, the temperature-sensitive color-changing capsule is obtained.
[0039] The temperature test is carried out on the latex glove, and the test results show that the glove presents purple red below 29℃, the glove presents red at 29℃ and 37℃, and the glove presents colorless above 37℃, and the results show that with the increase of temperature, the color of the glove gradually becomes lighter, and the purple color disappears first and then the red color disappears.
[0040] Example 4
[0041] A temperature-sensitive color-changing latex glove, comprising the following preparation steps: a glove mold is immersed in a coagulant, a natural latex agent and a temperature-sensitive color-changing latex agent in sequence, and drying treatment is carried out after each immersion, and the drying temperature is 70℃, and then vulcanization, drying, cooling and demolding treatment are carried out in sequence.
[0042] The natural latex agent comprises the following components in parts by weight: natural latex 100 parts, sulfur 8 parts and zinc dibutyldithiocarbamate 5 parts, the temperature-sensitive color-changing latex layer comprises the following components in parts by weight: natural latex 100 parts, sulfur 8 parts, zinc dibutyldithiocarbamate 5 parts and temperature-sensitive color-changing capsule 23 parts, and the particle size of the temperature-sensitive color-changing capsule is 4-8μm.
[0043] The temperature-sensitive color-changing capsule comprises the following preparation steps:
[0044] The bisphenol A is added into tetradecanol, the mass ratio of bisphenol A and tetradecanol is 1:30, stirring at 70-80 DEG C, then adding crystal violet lactone and 2'-chloro-6'-(diethylamino) fluorophore in sequence, the mass ratio of crystal violet lactone and bisphenol A is 1:4, the mass ratio of 2'-chloro-6'-(diethylamino) fluorophore and bisphenol A is 1:30, continuous stirring, the core material is obtained; 30 mass parts of the core material, 15 mass parts of isocyanate and 20 mass parts of chain extender are stirred and mixed uniformly to obtain an oil phase; 80 mass parts of emulsifier is added into water, stirring uniformly, then adding the oil phase and mixing uniformly to obtain a mixed emulsion; 35 mass parts of unsaturated polyol and 20 mass parts of crosslinking agent are added into water, stirring uniformly, then adding the mixed emulsion drop by drop, stirring and reacting at 50-60 DEG C, then after washing, suction filtration and drying treatment, the temperature-sensitive color-changing capsule is obtained.
[0045] The latex gloves are subjected to temperature test, and the test results show that the gloves present purple red below 30 DEG C, the gloves present red at 30 DEG C and 37 DEG C, and the gloves present colorless above 37 DEG C, and the results show that with the increase of temperature, the color of the gloves gradually becomes lighter, the purple color disappears first and then the red color disappears.
[0046] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should fall within the protection scope of the present application.
Claims
1. A thermosensitive color-changing latex glove, characterized in that, The thermosensitive color-changing latex gloves include an inner natural latex layer and an outer thermosensitive color-changing latex layer. The natural latex layer comprises the following components in parts by weight: 90-100 parts natural latex, 8-10 parts vulcanizing agent, and 5-7 parts accelerator. The thermosensitive color-changing latex layer comprises the following components in parts by weight: 90-100 parts natural latex, 8-10 parts vulcanizing agent, 5-7 parts accelerator, and 20-30 parts thermosensitive color-changing capsules.
2. The thermosensitive color-changing latex glove according to claim 1, characterized in that, The thermosensitive color-changing capsule includes the following preparation steps: Bisphenol A was added to tetradecyl alcohol and stirred at 70-80℃. Then, crystal violet lactone and 2'-chloro-6'-(diethylamino)fluorane were added sequentially and stirred continuously to obtain the core material. The core material, isocyanate, and chain extender were stirred and mixed evenly to obtain the oil phase. The emulsifier was added to water and stirred evenly, and then the oil phase was added and mixed evenly to obtain the mixed emulsion. The unsaturated polyol and crosslinking agent were added to water and stirred evenly. Then, they were added dropwise to the mixed emulsion and stirred and reacted at 50-60℃. After washing, filtration, and drying, the thermosensitive color-changing capsule was obtained.
3. The thermosensitive color-changing latex glove according to claim 1, characterized in that, The particle size of the thermosensitive color-changing capsule is 4-8 μm.
4. The thermosensitive color-changing latex glove according to claim 2, characterized in that, The mass ratio of bisphenol A to tetradecyl alcohol is 1:(30-40).
5. The thermosensitive color-changing latex glove according to claim 2, characterized in that, The mass ratio of crystal violet lactone to bisphenol A is 1:(2-4).
6. The thermosensitive color-changing latex glove according to claim 2, characterized in that, The mass ratio of the 2'-chloro-6'-(diethylamino)fluorane to the bisphenol A is 1:(20-30).
7. The thermosensitive color-changing latex glove according to claim 1, characterized in that, The vulcanizing agent is sulfur, and the accelerator is zinc dibutyldithiocarbamate.
8. A method for preparing a thermosensitive color-changing latex glove as described in any one of claims 1-7, characterized in that, The preparation process includes the following steps: the glove mold is sequentially immersed in a coagulant, a natural latex agent, and a thermosensitive color-changing latex agent. After each immersion, the mold is dried. Then, the glove is sequentially vulcanized, dried, cooled, and demolded to obtain the thermosensitive color-changing latex glove.
9. The method for preparing a thermosensitive color-changing latex glove according to claim 8, characterized in that, The vulcanization temperature is 120-130℃.