CN102391462A - Polyurethane surface layer resin for shoe lining leather and preparation method thereof - Google Patents
Polyurethane surface layer resin for shoe lining leather and preparation method thereof Download PDFInfo
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- CN102391462A CN102391462A CN 201110250718 CN201110250718A CN102391462A CN 102391462 A CN102391462 A CN 102391462A CN 201110250718 CN201110250718 CN 201110250718 CN 201110250718 A CN201110250718 A CN 201110250718A CN 102391462 A CN102391462 A CN 102391462A
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- shoe lining
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Abstract
The invention discloses a polyurethane surface layer resin for shoe lining leather and a preparation method thereof. The preparation method of the polyurethane surface layer resin for shoe lining leather comprises the following steps that: PU (poly urethane), urea and DMF (dimethylformamide) are uniformly mixed at a room temperature and a speed of 3000r/min by stirring, wherein the weight ratio of PU to urea to DMF is 100:10-15:30-50. Compared with the prior art, the polyurethane surface layer resin for the shoe lining leather has the advantages that: the stability of the resin is good, and compared with the traditional absorbent resin made by mechanical mixing by adding fillers on the market, the problem that the fillers sediment after the resin is stored for a long time can be solved; the selected urea is environmental friendly and economic, and is decomposed at a high temperature, and pinholes are reserved on a formed PU membrane to play a breathable and absorbent effect; and the polyurethane surface layer resin has better practicality in a shoe industry, and can produce good economic and social benefits.
Description
Technical field
The invention belongs to the polyurethane synthetic material technical field, be specifically related to a kind of shoe lining leather with urethane surface layer resin and preparation method thereof.
Background technology
Existing synthetic leather or imitation leather comprise PU (urethane) leather and PVC, the PU leather since its performance more and more near natural leather, and physical and mechanical properties is good, makes it on the footwear industry, obtain to use widely, has advantages such as attractive in appearance, comfortable and easy to wear and health.But existing motion shoe lining leather still has shortcomings such as ventilation property difference and water-absorbent be bad, wear for a long time foot can not feel well, moist, burn pin, if sweaty feet also may cause serious disease.Polyurethane permeable and water-absorbent as its raw material are bad, are the immediate causes that causes synthetic leather character bad.
Summary of the invention
Goal of the invention: the deficiency to existing in the prior art, the purpose of this invention is to provide a kind of shoe lining leather with urethane surface layer resin, make it have characteristics such as good permeability, good water absorption.Another object of the present invention provides a kind of method for preparing above-mentioned shoe lining leather with urethane surface layer resin.
Technical scheme: in order to realize the foregoing invention purpose, the technical scheme that the present invention adopts is:
A kind of shoe lining leather is made by following method with urethane surface layer resin: mix PU, urea and DMF, under the normal temperature, the 3000r/min stirring and evenly mixing gets final product, and wherein, the weight ratio of PU, urea and N (DMF) is 100:10 ~ 15:30 ~ 50.
Described PU is made by following method: behind the polyester polyol that stirs, chainextender and the part DMF, add diphenylmethanediisocyanate (MDI), under 70 ℃, react to viscosity 1.0 * 10
6-1.5 * 10
6Cps/25 ℃, add residue DMF, stirring reaction 1h gets final product; Wherein, the weight ratio of polyester polyol, chainextender, DMF and MDI is 19 ~ 20:1.8 ~ 2.0:70:8.1 ~ 8.5.
Described polyester polyol is the multipolymer of hexanodioic acid and butyleneglycol, and molecular weight is about 2000.
Described chainextender is a butyleneglycol.
A kind of preparation shoe lining leather may further comprise the steps with urethane surface layer resin:
(1) stirs behind polyester polyol, chainextender and the part DMF, add MDI, under 70 ℃, react to viscosity 1.0 * 10
6-1.5 * 10
6Cps/25 ℃, add residue DMF, stirring reaction 1h makes PU; Wherein, the weight ratio of polyester polyol, chainextender, DMF and MDI is 19 ~ 20:1.8 ~ 2.0:70:8.1 ~ 8.5;
(2) mix PU, urea and DMF, under the normal temperature, the 3000r/min stirring and evenly mixing makes shoe lining leather with urethane surface layer resin, and wherein, the weight ratio of PU, urea and DMF is 100:10 ~ 15:30 ~ 50.
The present invention has good wet exchangeability in order to satisfy synthetic leather, and when making urethane resin, the solvent of employing is DMF; With urea urethane is improved again then, its with PU slurry dipping or be coated with scrape with base material on, through the water bath cure; Because the good wetting ability of DMF very soon by the water displacement, makes its dissolving and water rapidly; Thereby in the process of leather PU cure, stay countless apertures, the principle of synthetic leather has ventilation property that Here it is.Simultaneously, the urea of selecting for use also can at high temperature decompose, and forms the countless pin holes of PU film, has strengthened the ventilation property of original PU leather like this.
Beneficial effect: compared with prior art, shoe lining leather of the present invention with the outstanding advantage that urethane surface layer resin has is: stable resin property is good, compares with the water-absorbing resin of the existing filled mechanically mixing in market, can avoid postpone filling settlement problem of a specified duration; Select urea for use, environmental protection, economy, urea decomposition at high temperature has on the PU film of formation to stay pin hole, plays the effect of ventilative suction; In the footwear industry, have better practicability, can produce good economic benefits and social benefit.
Embodiment
Below in conjunction with specific embodiment the present invention is done further explanation.
Embodiment 1
Mix 20kg polyester polyol, 1.9kg butyleneglycol and 21kg DMF, stir, add 8.1kgMDI then, 70 ℃ of temperature controls, react to viscosity 1.0 * 10
6-1.5 * 10
6Between the cps (25 ℃), add 49kg DMF, stirring reaction 1h makes PU; Mix 50kg PU, 5kg urea and 20kg DMF, under the normal temperature, the 3000r/min stirring and evenly mixing makes shoe lining leather with urethane surface layer paste resin, and wherein, polyester polyol is that molecular weight is 2000 the hexanodioic acid and the multipolymer of butyleneglycol.
With urethane surface layer paste resin dipping or be coated with and scrape on the base material, through the water bath cure, DMF has good wetting ability, is replaced by water rapidly with shoe lining leather; Make it be dissolved in water rapidly, thereby in the process of leather PU cure, stay countless apertures; Simultaneously, urea also can at high temperature decompose; Form the countless pin holes of PU film, strengthened the ventilation property of original PU leather, have characteristics such as good permeability, good water absorption.
Embodiment 2
Get 40kg polyester polyol, 3.8kg butyleneglycol and 50kg DMF, mix, add 16.2kg MDI then, under 70 ℃, react to viscosity 1.0 * 10
6-1.5 * 10
6Cps (25 ℃) adds 90kg DMF, and stirring reaction 1h makes PU; Mix 100kg PU, 30kg urea and 50kg DMF, under the normal temperature, the 3000r/min stirring and evenly mixing makes shoe lining leather with urethane surface layer resin.Wherein, polyester polyol is that molecular weight is the multipolymer of 2000 hexanodioic acids and butyleneglycol.
Shoe lining leather with urethane surface layer paste resin dipping or be coated with and scrape on the base material, is carried out the water bath cure, and DMF has good wetting ability; Be dissolved in water by the water displacement rapidly, in the process of leather PU cure, stay countless apertures; Simultaneously, urea also at high temperature decomposes; Form the countless pin holes of PU film, strengthened the ventilation property of original PU leather, have characteristics such as good permeability, good water absorption.
Embodiment 3
Get 40kg polyester polyol, 3.8kg butyleneglycol and 40kg DMF, mix, add 16.2kg MDI, under 70 ℃, react to viscosity 1.0 * 10
6-1.5 * 10
6Cps/25 ℃, add 100kg DMF, stirring reaction 1h makes PU; Mix 100kg PU, 13kg urea and 30kg DMF, under the normal temperature, the 3000r/min stirring and evenly mixing makes shoe lining leather with urethane surface layer resin, and wherein, polyester polyol is that molecular weight is the multipolymer of 2000 hexanodioic acids and butyleneglycol.
Shoe lining leather with urethane surface layer paste resin dipping or be coated with and scrape on the base material, is carried out the water bath cure, and DMF has good wetting ability; Be dissolved in water by the water displacement rapidly, in the process of leather PU cure, stay countless apertures; Simultaneously, urea also can at high temperature decompose; Form the countless pin holes of PU film, strengthened the ventilation property of original PU leather, have characteristics such as good permeability, good water absorption.
Embodiment 4
Get 40kg polyester polyol, 3.8kg butyleneglycol and 70kg DMF, stir, add 16.2kg MDI, under 70 ℃, react to viscosity 1.0 * 10
6-1.5 * 10
6Cps/25 ℃, add 70kg DMF, stirring reaction 1h makes PU; Mix 100kg PU, 14kg urea and 45kg DMF, under the normal temperature, the 3000r/min stirring and evenly mixing makes shoe lining leather with urethane surface layer resin; Wherein, polyester polyol is the multipolymer of hexanodioic acid and butyleneglycol.
With urethane surface layer paste resin dipping or be coated with and scrape on the base material, through the water bath cure, DMF has good wetting ability with shoe lining leather; Be dissolved in water by the water displacement rapidly, thereby in the process of leather PU cure, stay countless apertures; Simultaneously, urea also can at high temperature decompose; Form the countless pin holes of PU film, strengthened the ventilation property of original PU leather, have characteristics such as good permeability, good water absorption.
Claims (4)
1. a shoe lining leather is characterized in that with urethane surface layer resin, is made by following method: mix PU, urea and DMF, under the normal temperature, the 3000r/min stirring and evenly mixing gets final product, and wherein, the weight ratio of PU, urea and DMF is 100:10 ~ 15:30 ~ 50.
2. shoe lining leather according to claim 1 is characterized in that with urethane surface layer resin: described PU is made by following method: behind the polyester polyol that stirs, chainextender and the part DMF, add MDI, under 70 ℃, react to viscosity 1.0 * 10
6~ 1.5 * 10
6Cps/25 ℃, add residue DMF, stirring reaction 1h gets final product; Wherein, the weight ratio of polyester polyol, chainextender, DMF and MDI is 19 ~ 20:1.8 ~ 2.0:70:8.1 ~ 8.5; Chainextender is a butyleneglycol.
3. shoe lining leather according to claim 2 is characterized in that with urethane surface layer resin: described polyester polyol is the multipolymer of hexanodioic acid and butyleneglycol.
4. one kind prepares the described shoe lining leather of claim 1 with urethane surface layer resin, it is characterized in that, may further comprise the steps:
(1) stirs behind polyester polyol, butyleneglycol and the part DMF, add MDI, under 70 ℃, react to viscosity 1.0 * 10
6~ 1.5 * 10
6Cps/25 ℃, add residue DMF, stirring reaction 1h makes PU; Wherein, the weight ratio of polyester polyol, chainextender, DMF and MDI is 19 ~ 20:1.8 ~ 2.0:70:8.1 ~ 8.5;
(2) mix PU, urea and DMF, under the normal temperature, the 3000r/min stirring and evenly mixing makes shoe lining leather with urethane surface layer resin, and wherein, the weight ratio of PU, urea and DMF is 100:10 ~ 15:30 ~ 50.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110250718 CN102391462B (en) | 2011-08-29 | 2011-08-29 | Polyurethane surface layer resin for shoe lining leather and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110250718 CN102391462B (en) | 2011-08-29 | 2011-08-29 | Polyurethane surface layer resin for shoe lining leather and preparation method thereof |
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| CN102391462A true CN102391462A (en) | 2012-03-28 |
| CN102391462B CN102391462B (en) | 2013-03-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524704A (en) * | 2013-10-09 | 2014-01-22 | 旭川化学（苏州）有限公司 | Dry-method embossed color-change resin, and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08325346A (en) * | 1995-06-02 | 1996-12-10 | Kuraray Co Ltd | Thermoplastic polyurethane and its molded product |
| CN101503499A (en) * | 2009-03-11 | 2009-08-12 | 合肥安利化工有限公司 | Wet low modulus ultra-soft high peel strength polyurethane resin for synthetic leather and preparation thereof |
| CN101798762A (en) * | 2009-05-16 | 2010-08-11 | 石狮龙祥制革有限公司 | Production method of imitated microfiber synthetic leather |
-
2011
- 2011-08-29 CN CN 201110250718 patent/CN102391462B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08325346A (en) * | 1995-06-02 | 1996-12-10 | Kuraray Co Ltd | Thermoplastic polyurethane and its molded product |
| CN101503499A (en) * | 2009-03-11 | 2009-08-12 | 合肥安利化工有限公司 | Wet low modulus ultra-soft high peel strength polyurethane resin for synthetic leather and preparation thereof |
| CN101798762A (en) * | 2009-05-16 | 2010-08-11 | 石狮龙祥制革有限公司 | Production method of imitated microfiber synthetic leather |
Non-Patent Citations (1)
| Title |
|---|
| 《精细化工》 20101015 王全杰 不同致孔剂对聚氨酯微孔膜通透性能的影响 第1021页第6段和表1 1 第27卷, 第10期 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524704A (en) * | 2013-10-09 | 2014-01-22 | 旭川化学（苏州）有限公司 | Dry-method embossed color-change resin, and preparation method and application thereof |
| CN103524704B (en) * | 2013-10-09 | 2015-10-14 | 旭川化学（苏州）有限公司 | A kind of dry embossed color-change resin and preparation method thereof and application |
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| CN102391462B (en) | 2013-03-06 |
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