CN112625211A - Waterproof moisture-permeable polyurethane film with environmental response function and preparation method thereof - Google Patents
Waterproof moisture-permeable polyurethane film with environmental response function and preparation method thereof Download PDFInfo
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- CN112625211A CN112625211A CN202011497093.5A CN202011497093A CN112625211A CN 112625211 A CN112625211 A CN 112625211A CN 202011497093 A CN202011497093 A CN 202011497093A CN 112625211 A CN112625211 A CN 112625211A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4063—Mixtures of compounds of group C08G18/62 with other macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
- C08G18/6225—Polymers of esters of acrylic or methacrylic acid
- C08G18/6229—Polymers of hydroxy groups containing esters of acrylic or methacrylic acid with aliphatic polyalcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention provides a waterproof moisture-permeable polyurethane film with an environmental response function and a preparation method thereof, wherein the waterproof moisture-permeable polyurethane film is prepared from the following raw materials in percentage by weight, 10-20% of poly hydroxypropyl methyl methacrylate; 15-40% of diphenylmethane diisocyanate; 5 to 10 percent of dihydric alcohol; polyethylene glycol: 45 to 60 percent. The preparation method comprises the following steps: mixing diphenylmethane diisocyanate and dihydric alcohol, and reacting at the temperature of 75-85 ℃ for 1-2 hours; adding poly-hydroxypropyl methyl methacrylate and polyethylene glycol, keeping the temperature at 75-85 ℃, and reacting for 3-4 hours; the raw material in a molten state is blown/cast into a film by a blowing machine/casting machine. The invention adopts a multi-block structure of hard segment-environment sensing region-amorphous region, and the amorphous region is composed of a hydrophilic chain segment which moves freely: poly-hydroxypropyl methyl methacrylate; the environment sensing area is composed of polyethylene glycol which is controlled by the environment and can prevent water molecules from passing through, so that the environment sensing area has high response precision to the environment temperature and a wider temperature response range.
Description
Technical Field
The invention relates to the technical field of new materials, in particular to a waterproof and moisture permeable polyurethane film with an environmental response function and a preparation method thereof.
Background
The waterproof moisture permeable fabric is a functional fabric with high technology and unique characteristics, wherein water is not immersed into the fabric under certain pressure, and sweat emitted by a human body can be transmitted to the outside through the fabric in the form of water vapor, so that the sweat is prevented from accumulating and condensing between the body surface and the fabric to keep the comfort of the clothes. In the prior art, the waterproof and moisture-permeable performance of the fabric is improved by adopting the technologies of laminating a fabric and a film, coating, high-density fabric and the like. However, the traditional film has poor waterproof and moisture permeability and does not have a temperature sensing function; the coated fabric prevents a large amount of sweat from being discharged in a steam form, condensed water is formed inside the clothes, a human body has uncomfortable feelings such as sticky and wet feeling, stuffiness and the like, the wearing comfortableness is poor, and certain environmental pollution is caused by adding solvents to some film coatings; although the traditional thermotropic shape memory polymer material has certain temperature responsiveness, the range of response to the environmental temperature is too narrow, the response precision is not high, and the traditional thermotropic shape memory polymer material cannot be suitable for the environment with larger temperature difference; and the preparation cost is high, the practicability is low, and meanwhile, a large amount of flammable and toxic organic solvent is required to be used, so that the safety is low, the environment is greatly polluted, and the like.
Disclosure of Invention
The invention provides a waterproof moisture-permeable polyurethane film with an environmental response function and a preparation method thereof for solving the technical problems, the invention adopts a multi-block structure of a hard segment, an environmental sensing region and an amorphous region, wherein the hard segment is a physical crosslinking structure consisting of diphenylmethane diisocyanate (MDI) and dihydric alcohol; the "amorphous region" consists of a freely moving hydrophilic segment: poly-hydroxypropyl methyl methacrylate; the environment sensing area is composed of polyethylene glycol which is controlled by environment and can block water molecules from passing through, so that the environment sensing area has high response precision to the environment temperature and has a wider temperature response range: -10 to 40 ℃.
The invention relates to a waterproof moisture-permeable polyurethane film with an environmental response function and a preparation method thereof, and the technical scheme is as follows:
a waterproof moisture-permeable polyurethane film with an environmental response function comprises the following raw materials, by weight, 10% -20% of poly hydroxypropyl methyl methacrylate; 15-40% of diphenylmethane diisocyanate; 5 to 10 percent of dihydric alcohol; polyethylene glycol: 45 to 60 percent.
In any of the above schemes, preferably, the waterproof moisture-permeable polyurethane film is composed of the following raw materials by weight percentage: 10% of poly-hydroxypropyl methyl methacrylate; 30 percent of diphenylmethane diisocyanate; 8 percent of 1, 4-butanediol; polyethylene glycol: 52 percent.
In any of the above schemes, preferably, the waterproof moisture-permeable polyurethane film is composed of the following raw materials by weight percentage: 20 percent of poly-hydroxypropyl methyl methacrylate; 15 percent of diphenylmethane diisocyanate; 10 percent of 1, 3-butanediol; polyethylene glycol: and 55 percent.
In any of the above schemes, preferably, the waterproof moisture-permeable polyurethane film is composed of the following raw materials by weight percentage: 15% of poly-hydroxypropyl methyl methacrylate; 25 percent of diphenylmethane diisocyanate; 10 percent of 2-methyl-1, 3-propanediol; polyethylene glycol: 50 percent.
In any of the above embodiments, preferably, the diol comprises one of ethylene glycol, 2-methyl-1, 3-propanediol, 1, 3-butanediol, and 1, 4-butanediol.
In any of the above embodiments, preferably, the diol comprises one of ethylene glycol, 2-methyl-1, 3-propanediol, and 1, 3-butanediol.
In any of the above embodiments, it is preferable that the molecular weight of the polyethylene glycol is 2000-5000.
A waterproof moisture-permeable polyurethane film having an environmental response function, the method comprising the steps of: mixing diphenylmethane diisocyanate and dihydric alcohol, and reacting at the temperature of 75-85 ℃ for 1-2 hours; adding poly-hydroxypropyl methyl methacrylate and polyethylene glycol, keeping the temperature at 75-85 ℃, and reacting for 3-4 hours; the raw material in a molten state is blown/cast into a film by a blowing machine/casting machine.
In any of the above schemes, preferably, the diphenylmethane diisocyanate and the diol are mixed and then reacted at a temperature of 80-85 ℃.
In any of the above schemes, preferably, the reaction is carried out at a temperature of 75-80 ℃ after the poly-hydroxypropyl methyl methacrylate and the polyethylene glycol are added.
The invention has the beneficial effects that:
1. the waterproof moisture-permeable polyurethane film with the environmental response function provided by the invention has high response precision to the environmental temperature and a wider temperature response range: the temperature-sensitive material has the temperature-10-40 ℃ and wider applicability compared with the existing temperature-sensitive material (the temperature response range is 20-30 ℃).
2. The waterproof and moisture permeable effects of the product are improved due to high response precision and wide range to the environmental temperature.
3. The film is adopted to replace the traditional coating, and no organic solvent is needed to be added, so that the pollution is reduced.
4. The raw materials are directly extruded to form a film after being synthesized, cooling granulation and film reprocessing are not needed, and the process steps are reduced.
5. The fabric using the film is softer and more comfortable.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 30 wt% of diphenylmethane diisocyanate and 8 wt% of 1, 4-butanediol, and reacting at 85 ℃ for 1 hour;
(2) adding 10% by weight of poly-hydroxypropyl methyl methacrylate and 60% by weight of polyethylene glycol, keeping the temperature at 85 ℃, and reacting for 3 hours;
(3) the raw material in a molten state is blown/cast into a film by a blowing machine/casting machine.
The moisture permeability test data of the waterproof moisture permeable polyurethane film with the environmental response function at different temperatures are as follows:
under different temperature environments, the waterproof moisture-permeable polyurethane film with the environment response function has corresponding moisture permeability, and meets the requirements of different environments.
The diphenylmethane diisocyanate (MDI) used in this example generally has three isomers of 4,4 '-MDI, 2, 4' -MDI and 2,2 '-MDI, wherein 4, 4' -MDI is the main isomer, and there are no separate industrialized products of 2,4 '-MDI and 2, 2' -MDI, diphenylmethane diisocyanate (MDI) is an important isocyanate for polyurethane resin synthesis, and its molecular structure contains two benzene rings and has a symmetrical molecular structure, and the prepared polyurethane elastomer has good mechanical properties; the prepared polyurethane has the elasticity of rubber, the strength of plastic and excellent processability.
Example 2
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 15 wt% of diphenylmethane diisocyanate and 10 wt% of 1, 3-butanediol, and reacting at 85 ℃ for 1 hour;
(2) adding 20% of poly-hydroxypropyl methyl methacrylate and 45% of polyethylene glycol by weight, keeping the temperature at 85 ℃, and reacting for 3 hours;
(3) the raw material in a molten state is blown/cast into a film by a blowing machine/casting machine.
The moisture permeability test data of the waterproof moisture permeable polyurethane film with the environmental response function at different temperatures are as follows:
under different temperature environments, the waterproof moisture-permeable polyurethane film with the environment response function has corresponding moisture permeability, and meets the requirements of different environments.
Example 3
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 15 wt% of diphenylmethane diisocyanate and 10 wt% of 2-methyl-1, 3-propylene glycol, and reacting at 85 ℃ for 1 hour;
(2) adding 15 wt% of poly-hydroxypropyl methyl methacrylate and 50 wt% of polyethylene glycol, keeping the temperature at 85 ℃, and reacting for 3 hours;
(3) the raw material in a molten state is blown/cast into a film by a blowing machine/casting machine.
The moisture permeability test data of the waterproof moisture permeable polyurethane film with the environmental response function at different temperatures are as follows:
under different temperature environments, the waterproof moisture-permeable polyurethane film with the environment response function has corresponding moisture permeability, and meets the requirements of different environments.
Example 4
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 25 wt% of diphenylmethane diisocyanate and 10 wt% of ethylene glycol, and reacting at 85 ℃ for 1 hour;
(2) adding 15 wt% of poly-hydroxypropyl methyl methacrylate and 50 wt% of polyethylene glycol, keeping the temperature at 85 ℃, and reacting for 3 hours;
(3) the raw material in a molten state is blown/cast into a film by a blowing machine/casting machine.
Example 5
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 25 wt% of diphenylmethane diisocyanate and 5 wt% of ethylene glycol, and reacting at 85 ℃ for 1 hour;
(2) adding 20% of poly-hydroxypropyl methyl methacrylate and 50% of polyethylene glycol by weight, keeping the temperature at 85 ℃, and reacting for 3 hours;
example 6
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 25 wt% of diphenylmethane diisocyanate and 5 wt% of 1, 3-butanediol, and reacting at 85 ℃ for 1 hour;
(2) adding 20% of poly-hydroxypropyl methyl methacrylate and 50% of polyethylene glycol by weight, keeping the temperature at 85 ℃, and reacting for 3 hours;
example 7
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 25 wt% of diphenylmethane diisocyanate and 5 wt% of 1, 4-butanediol, and reacting at 85 ℃ for 1 hour;
(2) adding 20% of poly-hydroxypropyl methyl methacrylate and 50% of polyethylene glycol by weight, keeping the temperature at 85 ℃, and reacting for 3 hours;
example 8
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 25 wt% of diphenylmethane diisocyanate and 5 wt% of 2-methyl-1, 3-propylene glycol, and reacting at 85 deg.C for 1 hr;
(2) adding 20% of poly-hydroxypropyl methyl methacrylate and 50% of polyethylene glycol by weight, keeping the temperature at 85 ℃, and reacting for 3 hours;
example 9
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 25 wt% of diphenylmethane diisocyanate and 5 wt% of ethylene glycol, and reacting at 85 ℃ for 1 hour;
(2) adding 10% by weight of poly-hydroxypropyl methyl methacrylate and 60% by weight of polyethylene glycol, keeping the temperature at 85 ℃, and reacting for 3 hours;
example 10
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 20% by weight of diphenylmethane diisocyanate and 10% by weight of ethylene glycol, and reacting at 85 ℃ for 1 hour;
(2) adding 15 wt% of poly-hydroxypropyl methyl methacrylate and 55 wt% of polyethylene glycol, keeping the temperature at 85 ℃, and reacting for 3 hours;
example 11
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 20% by weight of diphenylmethane diisocyanate and 10% by weight of ethylene glycol, and reacting at 80 ℃ for 1 hour;
(2) adding 15 wt% of poly-hydroxypropyl methyl methacrylate and 55 wt% of polyethylene glycol, keeping the temperature at 80 ℃, and reacting for 3 hours;
example 12
The embodiment provides a waterproof moisture-permeable polyurethane film with an environmental response function, which is prepared from the following raw materials in percentage by weight:
the preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function comprises the following steps:
(1) mixing 20% by weight of diphenylmethane diisocyanate and 10% by weight of ethylene glycol, and reacting at 75 ℃ for 1 hour;
(2) adding 15% by weight of poly-hydroxypropyl methyl methacrylate and 55% by weight of polyethylene glycol, keeping the temperature at 75 ℃, and reacting for 3 hours;
although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A waterproof moisture-permeable polyurethane film with an environmental response function is characterized by comprising the following raw materials by weight percent, 10-20% of poly hydroxypropyl methyl methacrylate; 15-40% of diphenylmethane diisocyanate; 5 to 10 percent of dihydric alcohol; polyethylene glycol: 45 to 60 percent.
2. The waterproof moisture-permeable polyurethane film with the environmental response function of claim 1, which is characterized by comprising the following raw materials in percentage by weight: 10% of poly-hydroxypropyl methyl methacrylate; 30 percent of diphenylmethane diisocyanate; 8 percent of 1, 4-butanediol; polyethylene glycol: 52 percent.
3. The waterproof moisture-permeable polyurethane film with the environmental response function of claim 1, which is characterized by comprising the following raw materials in percentage by weight: 20 percent of poly-hydroxypropyl methyl methacrylate; 15 percent of diphenylmethane diisocyanate; 10 percent of 1, 3-butanediol; polyethylene glycol: and 55 percent.
4. The waterproof moisture-permeable polyurethane film with the environmental response function of claim 1, which is characterized by comprising the following raw materials in percentage by weight: 15% of poly-hydroxypropyl methyl methacrylate; 25 percent of diphenylmethane diisocyanate; 10 percent of 2-methyl-1, 3-propanediol; polyethylene glycol: 50 percent.
5. The environmentally responsible waterproof moisture-permeable polyurethane film according to claim 1, wherein the diol comprises one of ethylene glycol, 2-methyl-1, 3-propanediol, 1, 3-butanediol, and 1, 4-butanediol.
6. The environmentally responsible waterproof moisture-permeable polyurethane film according to claim 5, wherein the diol comprises one of ethylene glycol, 2-methyl-1, 3-propanediol, and 1, 3-butanediol.
7. The waterproof moisture-permeable polyurethane film with environmental response function as claimed in claim 1, wherein the molecular weight of the polyethylene glycol is in the range of 2000-.
8. The method for preparing a waterproof moisture-permeable polyurethane film having an environmental response function according to any one of claims 1 to 7, comprising the steps of:
mixing diphenylmethane diisocyanate and dihydric alcohol, and reacting at the temperature of 75-85 ℃ for 1-2 hours;
adding poly-hydroxypropyl methyl methacrylate and polyethylene glycol, keeping the temperature at 75-85 ℃, and reacting for 3-4 hours;
the raw material in a molten state is blown/cast into a film by a blowing machine/casting machine.
9. The preparation method of the waterproof and moisture permeable polyurethane film with the environmental response function according to claim 8, wherein the diphenylmethane diisocyanate and the dihydric alcohol are mixed and then react at a temperature of 80-85 ℃.
10. The method for preparing the waterproof and moisture-permeable polyurethane film with the environmental response function according to claim 8, wherein the reaction is carried out at a temperature of 75-80 ℃ after the poly-hydroxypropyl methyl methacrylate and the polyethylene glycol are added.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4670330A (en) * | 1984-12-21 | 1987-06-02 | Dia Rubber Company, Ltd. | Moisture-permeable, antistatic, and oil-resistant work gloves and production of the same |
| CN102977317A (en) * | 2013-01-05 | 2013-03-20 | 旭川化学（苏州）有限公司 | Direct-coating type polyurethane resin base material for waterproof and moisture permeable clothing leather and preparation method thereof |
-
2020
- 2020-12-17 CN CN202011497093.5A patent/CN112625211A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4670330A (en) * | 1984-12-21 | 1987-06-02 | Dia Rubber Company, Ltd. | Moisture-permeable, antistatic, and oil-resistant work gloves and production of the same |
| CN102977317A (en) * | 2013-01-05 | 2013-03-20 | 旭川化学（苏州）有限公司 | Direct-coating type polyurethane resin base material for waterproof and moisture permeable clothing leather and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 姬迎亮 等: "聚丙烯酸酯多元醇的合成及其性能研究", 《聚丙烯酸酯多元醇的合成及其性能研究》, vol. 19, no. 2, 28 February 2018 (2018-02-28), pages 31 - 34 * |
| 袁继新 等: "聚乙二醇对混合嵌段聚氨酯透湿性能的影响", 《精细化工》, vol. 26, no. 9, 30 September 2009 (2009-09-30), pages 900 - 903 * |
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