CN108641135B - Milk gel composite material and preparation method thereof - Google Patents
Milk gel composite material and preparation method thereof Download PDFInfo
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- CN108641135B CN108641135B CN201810403046.6A CN201810403046A CN108641135B CN 108641135 B CN108641135 B CN 108641135B CN 201810403046 A CN201810403046 A CN 201810403046A CN 108641135 B CN108641135 B CN 108641135B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2307/00—Characterised by the use of natural rubber
- C08J2307/02—Latex
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/02—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to polysaccharides
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- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Corsets Or Brassieres (AREA)
Abstract
The invention provides a milk gel composite material, which comprises two raw material components: the hydrogel powder and the composite latex are mixed, wherein the weight content of the hydrogel powder is 3% -15% of the weight of the composite latex, and the composite latex comprises the following components in percentage by mass: 45-60% of natural latex; 35-45% of filler; 2-7% of an accelerant; 0.5 to 2 percent of vulcanizing agent; 1-4% of a lubricant; 0.3-2% of plasticizer; 0.3 to 8 percent of foaming agent.
Description
Technical Field
The invention belongs to the technical field of materials, and particularly relates to a milk gel composite material and a preparation method thereof.
Background
Undergarments such as ladies' undergarments are often provided with mold cups. At present, the mould cup material for underwear on the market is generally sponge or silica gel. The sponge has a honeycomb structure, the structure is tight, the air permeability is difficult, and water molecules are easy to store in the honeycomb, so that the close-fitting clothes taking the sponge as the mold cup material are easy to generate stuffiness; meanwhile, the honeycomb structure of the sponge is easy to store dirt and become a hotbed for bacteria growth, which is not good for human health. In addition, the sponge brassiere feels comparatively crude, and the comfort level is not high. The underwear made of the silica gel as the mold cup material is heavy in weight, airtight and can cause skin allergy, red swelling, whitening and other adverse phenomena after being worn for a long time.
In summer, the temperature inside and outside the room rises, the human body feels extremely uncomfortable, and particularly, when the underwear made of sponge and silica gel serving as the material of the mold cup is worn, stuffiness is generated. Therefore, it is very important to develop a novel mold cup material which is cool, antibacterial and breathable.
Disclosure of Invention
The invention aims to provide a milk gel composite material and a preparation method thereof, and aims to solve the problems that the existing mould cup material is airtight, stuffy and hot and is easy to breed bacteria.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a milk gel composite material on one hand, which comprises two raw material components: hydrogel powder and composite latex, wherein the weight content of the hydrogel powder is 3-15% of the weight of the composite latex,
wherein the composite latex comprises the following components in percentage by mass:
and, a method for preparing a milk gel composite, comprising the steps of:
weighing the components according to the formula of the latex gel composite material;
mixing the hydrogel powder and the components except the foaming agent in the composite latex to obtain a mixed material;
and adding a foaming agent into the mixed material for foaming treatment to prepare the latex-gel composite material.
The latex-gel composite material provided by the invention simultaneously contains hydrogel powder and composite latex, and the weight content of the hydrogel powder is 3-15% of the weight of the composite latex. The obtained milk gel composite material can rapidly and evenly disperse the heat of a human body, effectively keeps the constant temperature effect, is smooth and does not irritate the skin, and a wearer is soft and comfortable. Compared with a composite latex product without hydrogel powder, the latex-gel composite material provided by the invention has the advantages that the tearing strength is improved by 5-15%, the resilience is improved by 7-20%, and the deformation rate is small by 4-12%. The latex gel composite material provided by the invention is subjected to high-temperature hot-pressing setting and applied to the mold cup of close-fitting clothes, has the advantages of refreshing, can improve the comfort of a wearer, and is particularly suitable for hot summer.
The latex-gel composite material provided by the invention can be prepared only by adding hydrogel powder before foaming of the composite latex and then carrying out foaming treatment. The method is simple and easy to control, and has a good large-scale production space.
Drawings
FIG. 1 is a diagram illustrating a state of a hydrogel powder provided by an embodiment of the present invention;
fig. 2 is a state diagram of a shaped milk gel composite provided by an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The embodiment of the invention provides a latex-gel composite material, which comprises two raw material components: hydrogel powder and composite latex, wherein the weight content of the hydrogel powder is 3-15% of the weight of the composite latex,
wherein the composite latex comprises the following components in percentage by mass:
the latex-gel composite material provided by the embodiment of the invention simultaneously contains hydrogel powder and composite latex, and the weight content of the hydrogel powder is 3-15% of the weight of the composite latex. The obtained milk gel composite material can rapidly and evenly disperse the heat of a human body, effectively keeps the constant temperature effect, is smooth and does not irritate the skin, and a wearer is soft and comfortable. Compared with a composite latex product without hydrogel powder, the latex-gel composite material provided by the embodiment of the invention has the advantages that the tearing strength is improved by 5-15%, the resilience is improved by 7-20%, and the deformation rate is small by 4-12%. The latex gel composite material provided by the embodiment of the invention is subjected to high-temperature hot-pressing and shaping, is applied to the mold cup of the close-fitting clothes, has the advantages of refreshing, can improve the comfort of a wearer, and is particularly suitable for hot summer.
In particular, in the embodiment of the invention, the addition of the hydrogel powder can endow the composite material with a refreshing effect, and improve the softness and comfort of the composite material. Specifically, the weight content of the hydrogel powder is 3% -15% of the weight of the composite latex. The proper content is not only beneficial to the molding of the composite material, but also can ensure the milk gel state of the composite material, so that the composite material can exert the basic characteristics of a better mold cup material. If the content of the hydrogel powder is too low, the hydrogel powder is not beneficial to forming and cannot be used as a mold cup material; if the content of the gel powder is too high, the composite material after molding is liable to swell and crack, and thus cannot be used as a material for a mold cup.
Preferably, the hydrogel powder has a particle size of 300-1000 meshes, so that the composite material has better elasticity and flexibility when being formed and used for manufacturing a mold cup. If the particle size of the hydrogel powder is too large, the surface of the foamed material is uneven; if the particle size of the hydrogel powder is too fine, the elasticity of the resulting composite is reduced, thereby reducing comfort.
Further preferably, the hydrogel powder comprises the following components in percentage by weight:
the corn starch is used as a matrix material of the hydrogel powder, has a high molecular structure, and provides a structural basis for the formation of a reticular cross-linked structure. The acrylic acid and the acrylamide both contain a hydrophobic group and a hydrophilic group, the hydrophobic group is wound with the corn starch, and the hydrophilic group is connected with water molecules, so that the water molecules are locked in the net structure. Meanwhile, the acrylic acid and the water are jointly used as solvents, so that a better dispersion medium is provided for dissolving the raw materials. In addition, the alkaline environment provided by the sodium hydroxide is beneficial to the cross-linking of organic matters, so that a firm net structure is formed. The initiator can initiate direct polymerization reaction to enable cross-linking polymerization to occur among corn starch, acrylic acid and acrylamide, a net-shaped cross-linking structure with a hydrophobic end is obtained, and moisture locking is achieved through the hydrophobic end with the net-shaped structure content. Further preferably, the initiator is ammonium persulfate.
The hydrogel powder finished product provided by the embodiment of the invention is shown in figure 1.
In the embodiment of the invention, the composite latex takes natural latex and filler as main components, the natural latex has the characteristics of natural non-toxicity and good skin-friendly hand feeling, the filler has the function of reinforcing increment, the vulcanizing agent in the high-temperature-resistant latex enables natural latex molecules to be crosslinked to form a three-dimensional network structure, the elastic strength is increased, the vulcanization effect is promoted by the accelerator, the flexibility of the high-temperature-resistant latex can be enhanced by the plasticizer, and the air permeability and the pressure resistance are increased by the foaming agent which enables the high-temperature-resistant latex to form a microporous structure; in a word, the components and contents in the formula of the high-temperature-resistant latex have the characteristics of softness, skin friendliness, good air permeability and high-temperature hot-pressing and shaping, so that the high-temperature-resistant latex can be used for preparing products needing shaping of underwear such as bra cups, hip pads and the like, and has wide application value.
Preferably, the filler is selected from calcium carbonate; preferably, the promoter is selected from at least one of zinc oxide and magnesium oxide; preferably, the plasticizer is selected from at least one of di (2-ethyl hexyl) adipate and diisooctyl phthalate; preferably, the lubricant is selected from at least one of alkane oil, diethyl phthalate, decatetramethylcyclo heptasiloxane, palmitic acid, stearic acid and oleic acid; preferably, the foaming agent is selected from at least one of azodicarbonamide, carbon dioxide and nitrogen; preferably, the vulcanizing agent is selected from sulfur.
The formed product of the milk gel composite material provided by the embodiment of the invention is shown in figure 2.
The milk gel composite material provided by the embodiment of the invention can be prepared by the following method.
Correspondingly, the embodiment of the invention provides a preparation method of a milk gel composite material, which comprises the following steps:
s01, weighing the components according to the formula of the latex gel composite material;
s02, mixing the components except the foaming agent in the hydrogel powder and the composite latex to obtain a mixed material;
and S03, adding a foaming agent into the mixed material for foaming treatment to prepare the latex-gel composite material.
The latex-gel composite material provided by the embodiment of the invention can be prepared only by adding hydrogel powder before foaming of the composite latex and then carrying out foaming treatment. The method is simple and easy to control, and has a good large-scale production space.
Specifically, in the step S01, the formulation of the milk gel composite material and the preferred conditions thereof are as described above, and are not described herein again for brevity.
As a preferred embodiment, the method for preparing the hydrogel powder comprises the following steps:
s011, dissolving sodium hydroxide in water to prepare a sodium hydroxide aqueous solution, and adding acrylic acid into the sodium hydroxide aqueous solution for pretreatment to obtain a mixed solvent.
The mixed solvent obtained by the method is beneficial to dissolving and dispersing the corn starch, the acrylamide and the calcium carbonate, and forms a jelly state after being fully dispersed.
S012, sequentially adding corn starch, acrylamide and calcium carbonate into the mixed solvent, stirring, heating, reacting, and adding an ammonium persulfate initiator to perform graft polymerization reaction to obtain gel-shaped reaction liquid.
In the step, an ammonium persulfate initiator is added to graft and crosslink among corn starch, acrylamide and acrylamide to obtain a net structure containing a hydrophobic end. Preferably, the temperature of the reaction by heating with stirring is 35 to 50 ℃.
S013, pouring the jelly-like reaction liquid into a mold, and drying at constant temperature to obtain the sheet hydrogel.
The step is dried to obtain the thin hydrogel sheet like paper.
S014, crushing the sheet hydrogel to obtain hydrogel powder.
Preferably, the hydrogel powder is subjected to a sieving treatment, and specifically, the hydrogel powder is sieved by a 300-mesh and 1000-mesh sieve.
In the step S02, the hydrogel powder and the composite latex except for the foaming agent are mixed, and then the components are uniformly mixed to obtain a mixed material. Preferably, the method for mixing the hydrogel powder and the components of the composite latex except the foaming agent comprises the following steps:
s021, after the natural latex is subjected to first softening treatment, adding a lubricant, a plasticizer and a filler, and mixing to obtain a first material.
The first softening treatment mainly softens the natural latex so as to be uniformly mixed with other components, and preferably, the natural latex is softened by heating at 60 to 80 ℃.
S022, carrying out second softening treatment on the first mixed material, and then adding a vulcanizing agent and an accelerator to mix to obtain a second material.
The second softening process is mainly to soften the first mixed material to more uniformly mix it with other ingredients added later, and preferably also to heat soften it at 60-80 deg.C.
S023, mixing the second mixed material with the hydrogel powder to obtain a mixed material.
The following description will be given with reference to specific examples.
Example 1
A milk gel composite material comprises two raw material components: hydrogel powder and composite latex, wherein the weight content of the hydrogel powder is 7% of the weight of the composite latex, the particle size of the hydrogel powder is 500 meshes,
wherein the composite latex comprises the following components in percentage by mass:
the preparation method of the milk gel composite material comprises the following steps:
weighing the components according to the formula of the latex gel composite material;
mixing the hydrogel powder and the components except the foaming agent in the composite latex to obtain a mixed material;
and adding a foaming agent into the mixed material for foaming treatment to prepare the latex-gel composite material.
Comparative example 1
The difference from example 1 is that the hydrogel powder was not contained.
Compared with comparative example 1, the tear strength of example 1 was improved by 8%, the resilience was improved by 10%, and the deformation rate was small by 5%.
Example 2
A milk gel composite material comprises two raw material components: hydrogel powder and composite latex, wherein the weight content of the hydrogel powder is 10 percent of the weight of the composite latex, the granularity of the hydrogel powder is 600 meshes,
wherein the composite latex comprises the following components in percentage by mass:
the preparation method of the milk gel composite material comprises the following steps:
weighing the components according to the formula of the latex gel composite material;
mixing the hydrogel powder and the components except the foaming agent in the composite latex to obtain a mixed material;
and adding a foaming agent into the mixed material for foaming treatment to prepare the latex-gel composite material.
Comparative example 2
The difference from example 2 is that the hydrogel powder was not contained.
Compared with comparative example 2, the tear strength of example 2 is improved by 12%, the rebound resilience is improved by 16%, and the deformation rate is small by 9%.
Example 3
A milk gel composite material comprises two raw material components: hydrogel powder and composite latex, wherein the weight content of the hydrogel powder is 4% of the weight of the composite latex, the granularity of the hydrogel powder is 400 meshes,
wherein the composite latex comprises the following components in percentage by mass:
the preparation method of the milk gel composite material comprises the following steps:
weighing the components according to the formula of the latex gel composite material;
mixing the hydrogel powder and the components except the foaming agent in the composite latex to obtain a mixed material;
and adding a foaming agent into the mixed material for foaming treatment to prepare the latex-gel composite material.
Comparative example 3
The difference from example 3 is that no hydrogel powder was contained.
Compared with comparative example 3, the tear strength of example 3 was improved by 5%, the resilience was improved by 8%, and the deformation rate was small by 4%.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A milk gel composite material is characterized by comprising two raw material components: hydrogel powder and composite latex, wherein the weight content of the hydrogel powder is 3-15% of the weight of the composite latex,
wherein the composite latex comprises the following components in percentage by mass:
the hydrogel powder comprises the following components in percentage by weight:
2. the milk gel composite of claim 1, wherein the hydrogel powder is 300-1000 mesh in size.
3. A milk gel composite according to claim 1, characterised in that the initiator is ammonium persulphate.
4. A milk gel composite according to claim 1, characterized in that the filler is selected from calcium carbonate; and/or
The promoter is at least one of zinc oxide and magnesium oxide; and/or
The plasticizer is selected from at least one of di (2-ethyl hexyl) adipate and diisooctyl phthalate; and/or
The lubricant is at least one selected from alkane oil, diethyl phthalate, decatetramethylcyclo heptasiloxane, palmitic acid, stearic acid and oleic acid; and/or
The foaming agent is selected from at least one of azodicarbonamide, carbon dioxide and nitrogen; and/or
The vulcanizing agent is selected from sulfur.
5. A preparation method of a milk gel composite material is characterized by comprising the following steps:
weighing the components according to the formulation of the milk gel composite material according to any one of claims 1-4;
mixing the hydrogel powder and the components except the foaming agent in the composite latex to obtain a mixed material;
and adding a foaming agent into the mixed material for foaming treatment to prepare the latex-gel composite material.
6. A method of preparing a milk gel composite according to claim 5, wherein the method of preparing a hydrogel powder comprises the steps of:
dissolving sodium hydroxide in water to prepare a sodium hydroxide aqueous solution, and adding acrylic acid into the sodium hydroxide aqueous solution for pretreatment to obtain a mixed solvent;
sequentially adding corn starch, acrylamide and calcium carbonate into the mixed solvent, stirring and heating for reaction, and then adding an ammonium persulfate initiator for graft polymerization reaction to obtain gel-shaped reaction liquid;
pouring the gel-shaped reaction liquid into a mold, and drying at constant temperature to obtain a thin hydrogel;
and crushing the sheet hydrogel to obtain hydrogel powder.
7. A process for the preparation of a milk gel composite as claimed in claim 6, wherein the temperature of the stirred heating reaction is between 35 and 50 ℃.
8. A method of preparing a milk gel composite as claimed in any one of claims 5 to 7, wherein the hydrogel powder is sieved through a 300-mesh and 1000-mesh sieve.
9. A method of preparing a milk gel composite according to any of claims 5-7, wherein the method of mixing the hydrogel powder, the components of the composite latex other than the foaming agent comprises:
after the natural latex is subjected to first softening treatment, adding a lubricant, a plasticizer and a filler and mixing to obtain a first material;
carrying out second softening treatment on the first mixed material, and then adding a vulcanizing agent and an accelerator for mixing to obtain a second material;
and mixing the second mixed material with the hydrogel powder to obtain a mixed material.
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| CN202536126U (en) * | 2012-02-21 | 2012-11-21 | 上海工程技术大学 | Sports bra for women |
| CN105209049B (en) * | 2013-05-02 | 2019-05-14 | 医学科技研究公司 | Antimicrobial compositions and its manufacturing method |
| CN103923428A (en) * | 2014-04-24 | 2014-07-16 | 河南工业大学 | Starch-based porous hydrogel and preparation method thereof |
| US9851472B2 (en) * | 2015-03-27 | 2017-12-26 | Momentive Performance Materials Inc. | Silicone-based hydrophilic copolymer and hydrogel compositions comprising the same |
| CN105801882A (en) * | 2016-04-19 | 2016-07-27 | 桂林理工大学 | Preparation method of cassava starch hydrogel |
| CN106947025A (en) * | 2017-04-27 | 2017-07-14 | 安庆师范大学 | A kind of preparation method based on starch graft acrylic acid and the compound water-keeping gel of sodium alginate, slag |
| CN107312194A (en) * | 2017-07-13 | 2017-11-03 | 温州嘉泰乳胶制品有限公司 | Latex cure Recipe |
| CN107500930A (en) * | 2017-10-10 | 2017-12-22 | 长沙湘资生物科技有限公司 | The method that organic fertilizer is prepared using Momordica grosvenori root tuber |
| CN107868291A (en) * | 2017-12-14 | 2018-04-03 | 深圳方塔科技有限公司 | For fire resistant latex of personal clothing mold cup and cushion and preparation method thereof |
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