CN103805044A - Method for preparing waterborne polyurethane foaming slurry for synthetic leather in ultrasonic-assisted manner - Google Patents
Method for preparing waterborne polyurethane foaming slurry for synthetic leather in ultrasonic-assisted manner Download PDFInfo
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- CN103805044A CN103805044A CN201410032330.9A CN201410032330A CN103805044A CN 103805044 A CN103805044 A CN 103805044A CN 201410032330 A CN201410032330 A CN 201410032330A CN 103805044 A CN103805044 A CN 103805044A
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Abstract
The invention discloses a method for preparing waterborne polyurethane foaming slurry for synthetic leather in an ultrasonic-assisted manner. The slurry is prepared from the following materials in parts by weight through mixing: 80-100 parts of waterborne polyurethane emulsion, 0.5-2 parts of thickening agent, 2-5 parts of foaming agent, 1-3 parts of wetting agent, 0.5-2 parts of leveling agent, 1-5 parts of color paste, and 10-30 parts of filler. The preparation method comprises the following steps: firstly, preparation of slurry; secondly, ultrasonic pretreatment; thirdly, foaming; and fourthly, filtering. According to the method, ultrasonic waves are applied during preparation of the waterborne polyurethane foaming slurry for synthetic leather, the frequency and the action time of the ultrasonic waves are controlled to effectively control the bubbling efficiency of the foaming agent and enable the bubbles to be distributed uniformly, the operation process is greatly simplified, the agglomeration phenomenon of the fillers in the slurry can be reduced, the filler dispersibility is improved, the purpose of dispersing uniformly is achieved, the physical property of synthetic leather is improved and the synthetic leather has good hand feel.
Description
Technical field
The invention belongs to synthetic leather field, particularly the preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of a kind of ultrasonic wave.
Background technology
The preparation method of existing use for synthetic leather aqueous foaming slurry, comprise physical blowing method and chemical blowing process, wherein physical blowing refers under mechanical agitation synthetic leather water paste is foamed, and technique is fairly simple, but the Stability of Slurry obtaining is bad, and bubble size distribution is inhomogeneous; And chemical blowing process is under the existence of whipping agent, utilize whipping agent decomposition to discharge gas and foam, the Stability of Slurry obtaining is better, and bubble size distribution is more even, but technique is relatively complicated, and operational requirement is higher.
But utilize chemical blowing process higher to operational requirement, be therefore unfavorable for actual production.Ultrasonic technology has deep Research foundation in processing and the dispersion polymerization field of polymkeric substance, and utilizes the preparation of the auxiliary synthetic leather aqueous foaming slurry of ultrasonic technology to yet there are no relevant report.
Summary of the invention
In order to solve deficiency of the prior art, object of the present invention is for providing size and the distribution of bubble more even, and cell density becomes large a kind of waterborne polyurethane for synthetic leather foamed slurry and preparation method thereof.
To achieve these goals, the present invention is by the following technical solutions:
A preparation method for the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, its material mixing by following weight part forms:
Further, described slurry is made up of the material mixing of following weight part:
Described aqueous polyurethane emulsion is anionic aromatic waterborne polyurethane or anionic water-based aliphaic polyurethane.
Described thickening material is association type polyurethanes thickening material, increases slurry system viscosity, is conducive to slurry and is applied to synthetic leather manufacture.
Described whipping agent is fatty alcohol sulphuric acid salt tensio-active agent, is subject to producing a large amount of bubbles after machinery or energy in system, makes finished leather have good feel.
Described wetting agent is anionic organosilicon wetting agent.
Described flow agent is modified acrylic acid flow agent.
Described mill base is various color aqueous color pastes.
Described filler is one or more the mixing in calcium carbonate, talcum powder, wood powder, improves the physicals of finished leather.
The preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of above-mentioned any ultrasonic wave, comprises the following steps:
1) slurry preparation: aqueous polyurethane emulsion, thickening material, whipping agent, wetting agent, flow agent, mill base and filler are mixed and be mixed with slurry;
2) ultrasonic pretreatment: the slurry preparing is carried out to ultrasonic pretreatment 5-10min; Described hyperacoustic frequency is 20-50Hz, and power is 50-150W;
3) foaming: be 20-30Hz in frequency, under the ultrasonic wave that power is 30-100W, pretreated slurry foamed by foaming machine, the air flow quantity of foaming machine is 1-4L/min, foamed time 20-40min;
4) filter: foamed slurry is filtered and obtains waterborne polyurethane for synthetic leather foamed material with 80 mesh filter screens.
The present invention adopts above technical scheme, by apply ultrasonic wave in the preparation process of synthetic leather aqueous foaming slurry, by controlling hyperacoustic frequency and action time, not only can effectively control whipping agent bubbling efficiency, and make bubble size distribution more even, operating procedure is simplified greatly, can reduce the agglomeration of filler in slurry simultaneously, improve its dispersiveness in slurry, reach homodisperse object, thereby improve the physicals of finished leather, obtain having the synthetic leather of excellent handle.
Embodiment
Below in conjunction with embodiment, the present invention will be further described in detail.Following listed embodiment is prioritization scheme of the present invention, but is not limited only to the listed embodiment of the present invention, also should comprise other the known changes in interest field of the presently claimed invention.
A kind of waterborne polyurethane for synthetic leather foamed slurry, its material mixing by following weight part forms:
Further, described slurry is made up of the material mixing of following weight part:
Described aqueous polyurethane is anionic aromatic waterborne polyurethane or anionic water-based aliphaic polyurethane, and described aqueous polyurethane emulsion solids content is 40-60%.
Described thickening material is association type polyurethanes thickening material.
Described whipping agent is fatty alcohol sulphuric acid salt tensio-active agent.
Described wetting agent is anionic organosilicon wetting agent.
Described flow agent is modified acrylic acid flow agent.
Described mill base is various color aqueous color pastes.
Described filler is one or more the mixing in calcium carbonate, talcum powder, wood powder.
Waterborne polyurethane for synthetic leather foamed slurry, comprises the following steps:
1) slurry preparation: aqueous polyurethane emulsion, thickening material, whipping agent, wetting agent, flow agent, mill base and filler are mixed and be mixed with slurry;
2) ultrasonic pretreatment: the slurry preparing is carried out to ultrasonic pretreatment 5-10min; Described hyperacoustic frequency is 20-50Hz, and power is 50-150W;
3) foaming: be 20-30Hz in frequency, under the ultrasonic wave that power is 30-100W, pretreated slurry foamed by foaming machine, the air flow quantity of foaming machine is 1-4L/min, foamed time 20-40min;
4) filter: foamed slurry is filtered and obtains waterborne polyurethane for synthetic leather foamed material with 80 mesh filter screens.
The related feature of raw material of the embodiment of the present invention is as follows:
Aqueous polyurethane emulsion, ten thousand magnificent chemical Group Plcs,
3458, effectively solids content is 50wt%;
Thickening material, Hefei Anke Fine Chemicals Co., Ltd., association type polyurethanes thickening material HA;
Whipping agent, new east station of Guangzhou is full of Chemical Co., Ltd., sodium lauryl sulphate;
Wetting agent, SILCONA, organosilicon wetting agent C600;
Flow agent, Mo Neng Chemical Co., Ltd. of Shenzhen, organosilicon-modified acrylic solution 1210;
Mill base, Ke Laien chemical industry, aqueous color paste;
Filler, Shanghai Tonnor Material Science Co., Ltd., wood powder.
Embodiment 1
The preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, its material mixing by following weight part forms:
The preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, comprises the following steps:
1) slurry preparation: aqueous polyurethane emulsion, thickening material, whipping agent, wetting agent, flow agent, mill base and filler are mixed and be mixed with slurry;
2) ultrasonic pretreatment: the slurry preparing is carried out to ultrasonic pretreatment 5min; Described hyperacoustic frequency is 20Hz, and power is 50W;
3) foaming: be 20Hz in frequency, under the ultrasonic wave that power is 30W, pretreated slurry foamed by foaming machine, the air flow quantity of foaming machine is 1L/min, foamed time 20min;
4) filter: foamed slurry is filtered and obtains waterborne polyurethane for synthetic leather foamed material with 80 mesh filter screens.Embodiment 2
The preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, its material mixing by following weight part forms:
The preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, comprises the following steps:
1) slurry preparation: aqueous polyurethane emulsion, thickening material, whipping agent, wetting agent, flow agent, mill base and filler are mixed and be mixed with slurry;
2) ultrasonic pretreatment: the slurry preparing is carried out to ultrasonic pretreatment 10min; Described hyperacoustic frequency is 50Hz, and power is 150W;
3) foaming: be 30Hz in frequency, under the ultrasonic wave that power is 100W, pretreated slurry foamed by foaming machine, the air flow quantity of foaming machine is 4L/min, foamed time 40min;
4) filter: foamed slurry is filtered and obtains waterborne polyurethane for synthetic leather foamed material with 80 mesh filter screens.Embodiment 3
The preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, its material mixing by following weight part forms:
The preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, comprises the following steps:
1) slurry preparation: aqueous polyurethane emulsion, thickening material, whipping agent, wetting agent, flow agent, mill base and filler are mixed and be mixed with slurry;
2) ultrasonic pretreatment: the slurry preparing is carried out to ultrasonic pretreatment 8min; Described hyperacoustic frequency is 30Hz, and power is 100W;
3) foaming: be 25Hz in frequency, under the ultrasonic wave that power is 70W, pretreated slurry foamed by foaming machine, the air flow quantity of foaming machine is 2L/min, foamed time 30min;
4) filter: foamed slurry is filtered and obtains waterborne polyurethane for synthetic leather foamed material with 80 mesh filter screens.Embodiment 4
The preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, its material mixing by following weight part forms:
The preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, comprises the following steps:
1) slurry preparation: aqueous polyurethane emulsion, thickening material, whipping agent, wetting agent, flow agent, mill base and filler are mixed and be mixed with slurry;
2) ultrasonic pretreatment: the slurry preparing is carried out to ultrasonic pretreatment 10min; Described hyperacoustic frequency is 50Hz, and power is 150W;
3) foaming: be 30Hz in frequency, under the ultrasonic wave that power is 100W, pretreated slurry foamed by foaming machine, the air flow quantity of foaming machine is 4L/min, foamed time 40min;
4) filter: foamed slurry is filtered and obtains waterborne polyurethane for synthetic leather foamed material with 80 mesh filter screens.
Embodiment 5
The preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, its material mixing by following weight part forms:
The preparation method of the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, comprises the following steps:
1) slurry preparation: aqueous polyurethane emulsion, thickening material, whipping agent, wetting agent, flow agent, mill base and filler are mixed and be mixed with slurry;
2) ultrasonic pretreatment: the slurry preparing is carried out to ultrasonic pretreatment 5min; Described hyperacoustic frequency is 20Hz, and power is 50W;
3) foaming: be 20Hz in frequency, under the ultrasonic wave that power is 30W, pretreated slurry foamed by foaming machine, the air flow quantity of foaming machine is 1L/min, foamed time 20min;
4) filter: foamed slurry is filtered and obtains waterborne polyurethane for synthetic leather foamed material with 80 mesh filter screens.
Apply ul-trasonic irradiation by the slurry to different ratios of raw materials, by controlling hyperacoustic frequency, power and the action time of applying, the waterborne polyurethane for synthetic leather foamed material obtaining, and be applied in synthetic leather production, the correlated performance of the finished leather that contrast obtains is as follows:
The waterborne polyurethane foaming material property energy that the different embodiment of table 1 obtain
| Treating processes | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Do not apply ultrasonic wave |
| Stability of Slurry | 5-8h | 6-8h | 8-10h | 6-9h | 5-7h | 2-4h |
| Tensile strength | 26MPa | 30MPa | 28MPa | 32MPa | 24MPa | 20MPa |
| Elongation at break | 40% | 50% | 50% | 45% | 30% | 30% |
As can be seen from the above table, can obviously improve the stability of slurry by applying ul-trasonic irradiation, the physicals that is simultaneously applied to the finished leather obtaining after synthetic leather is improved.
Claims (10)
1. the auxiliary waterborne polyurethane for synthetic leather foamed slurry of ultrasonic wave, is characterized in that: described slurry is made up of the material mixing of following weight part:
Aqueous polyurethane emulsion 80-100 part;
Thickening material 0.5-2 part;
Whipping agent 2-5 part;
Wetting agent 1-3 part;
Flow agent 0.5-2 part;
Mill base 1-5 part;
Filler 10-30 part.
2. the auxiliary waterborne polyurethane for synthetic leather foamed slurry of a kind of ultrasonic wave according to claim 1, is characterized in that: described slurry is made up of the material mixing of following weight part:
90 parts of aqueous polyurethane emulsions;
1 part of thickening material;
3 parts of whipping agents;
1.5 parts of wetting agents;
1 part of flow agent;
5 parts of mill bases;
15 parts of fillers.
3. the auxiliary waterborne polyurethane for synthetic leather foamed slurry of a kind of ultrasonic wave according to claim 1 and 2, is characterized in that: described aqueous polyurethane is anionic aromatic waterborne polyurethane or anionic water-based aliphaic polyurethane.
4. the auxiliary waterborne polyurethane for synthetic leather foamed slurry of a kind of ultrasonic wave according to claim 1 and 2, is characterized in that: described thickening material is association type polyurethanes thickening material.
5. the auxiliary waterborne polyurethane for synthetic leather foamed slurry of a kind of ultrasonic wave according to claim 1 and 2, is characterized in that: described whipping agent is fatty alcohol sulphuric acid salt tensio-active agent.
6. the auxiliary waterborne polyurethane for synthetic leather foamed slurry of a kind of ultrasonic wave according to claim 1 and 2, is characterized in that: described wetting agent is anionic organosilicon wetting agent.
7. the auxiliary waterborne polyurethane for synthetic leather foamed slurry of a kind of ultrasonic wave according to claim 1 and 2, is characterized in that: described flow agent is modified acrylic acid flow agent.
8. the auxiliary waterborne polyurethane for synthetic leather foamed slurry of a kind of ultrasonic wave according to claim 1 and 2, is characterized in that: described mill base is various color aqueous color pastes.
9. the auxiliary waterborne polyurethane for synthetic leather foamed slurry of a kind of ultrasonic wave according to claim 1 and 2, is characterized in that: described filler is one or more the mixing in calcium carbonate, talcum powder, wood powder.
10. the auxiliary waterborne polyurethane for synthetic leather foamed slurry of a kind of ultrasonic wave according to claim 1 and 2, is characterized in that: it comprises the following steps:
1) slurry preparation: aqueous polyurethane emulsion, thickening material, whipping agent, wetting agent, flow agent, mill base and filler are mixed and be mixed with slurry;
2) ultrasonic pretreatment: the slurry preparing is carried out to ultrasonic pretreatment 5-10min; Described hyperacoustic frequency is 20-50Hz, and power is 50-150W;
3) foaming: be 20-30Hz in frequency, under the ultrasonic wave that power is 30-100W, pretreated slurry foamed by foaming machine, the air flow quantity of foaming machine is 1-4L/min, foamed time 20-40min;
4) filter: foamed slurry is filtered and obtains waterborne polyurethane for synthetic leather foamed material with 80 mesh filter screens.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410032330.9A CN103805044B (en) | 2014-01-23 | 2014-01-23 | A kind of preparation method of ultrasonic-assisted synthesis leather use polyurethane foam slurry |
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| CN201410032330.9A CN103805044B (en) | 2014-01-23 | 2014-01-23 | A kind of preparation method of ultrasonic-assisted synthesis leather use polyurethane foam slurry |
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| CN103805044B CN103805044B (en) | 2016-03-23 |
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Cited By (8)
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| CN105133345A (en) * | 2015-09-29 | 2015-12-09 | 刘春明 | Water-based specially-misty and specially-black surface treating agent for synthetic leather and preparing method thereof |
| CN107916057A (en) * | 2017-11-21 | 2018-04-17 | 安徽北马科技有限公司 | A kind of preparation method of the composite foamed slurry of use for synthetic leather collagen aqueous polyurethane |
| CN110777544A (en) * | 2019-11-01 | 2020-02-11 | 清远市齐力合成革有限公司 | Waterborne polyurethane synthetic leather fabric and preparation method thereof |
| CN110885255A (en) * | 2018-09-11 | 2020-03-17 | 中建材创新科技研究院有限公司 | Preparation method of light gypsum board |
| CN111424435A (en) * | 2020-03-19 | 2020-07-17 | 合肥科天水性科技有限责任公司 | Air filter medium and preparation method thereof |
| CN112724648A (en) * | 2020-12-30 | 2021-04-30 | 温州市迪派鞋业有限公司 | Anti-aging sole material and preparation method thereof |
| CN114163247A (en) * | 2021-12-08 | 2022-03-11 | 哈尔滨工程大学 | Preparation method of ceramic-based powder containing closed-through hole structure and used for multi-element modified phase loading |
| CN115354507A (en) * | 2022-09-26 | 2022-11-18 | 肖洋 | Polyurethane synthetic leather and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133345A (en) * | 2015-09-29 | 2015-12-09 | 刘春明 | Water-based specially-misty and specially-black surface treating agent for synthetic leather and preparing method thereof |
| CN107916057A (en) * | 2017-11-21 | 2018-04-17 | 安徽北马科技有限公司 | A kind of preparation method of the composite foamed slurry of use for synthetic leather collagen aqueous polyurethane |
| CN110885255A (en) * | 2018-09-11 | 2020-03-17 | 中建材创新科技研究院有限公司 | Preparation method of light gypsum board |
| CN110777544A (en) * | 2019-11-01 | 2020-02-11 | 清远市齐力合成革有限公司 | Waterborne polyurethane synthetic leather fabric and preparation method thereof |
| CN111424435A (en) * | 2020-03-19 | 2020-07-17 | 合肥科天水性科技有限责任公司 | Air filter medium and preparation method thereof |
| CN112724648A (en) * | 2020-12-30 | 2021-04-30 | 温州市迪派鞋业有限公司 | Anti-aging sole material and preparation method thereof |
| CN114163247A (en) * | 2021-12-08 | 2022-03-11 | 哈尔滨工程大学 | Preparation method of ceramic-based powder containing closed-through hole structure and used for multi-element modified phase loading |
| CN115354507A (en) * | 2022-09-26 | 2022-11-18 | 肖洋 | Polyurethane synthetic leather and preparation method thereof |
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