CN102912650A - Method for preparing wet process PU (poly urethane) synthetic leather - Google Patents
Method for preparing wet process PU (poly urethane) synthetic leather Download PDFInfo
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- CN102912650A CN102912650A CN 201210418022 CN201210418022A CN102912650A CN 102912650 A CN102912650 A CN 102912650A CN 201210418022 CN201210418022 CN 201210418022 CN 201210418022 A CN201210418022 A CN 201210418022A CN 102912650 A CN102912650 A CN 102912650A
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Abstract
The invention discloses a method for preparing PU (poly urethane) synthetic leather by a wet process. The PU synthetic leather is characterized by comprising a knockout stirring step and a wet process producing step, wherein the knockout stirring step is as follows: adding 10 to 20 parts of DMF (dimethyl formamide) into a reaction kettle, and then adding 20 to 30 parts of lignin powder, stopping stirring after the lignin powder is completely dispersed into DMF after being completely stirred for 8 to 12 minutes, and then adding 1 to 3 parts of C-70, 1 to 3 parts of S-80, 1 to 3 parts of defoaming agent and a flatting agent into the reaction kettle for continuously stirring for 3 to 7 minutes, and then adding a polyurethane resin, using the vacuum defoaming agent to defoam for 35 to 45 minutes after the mixture is stirred for 18 to 22 minutes with the speed of 400 to 600 rpm; and finally using a filter screen with size of 60 to 100 meshes to filter. The invention has the advantages of being simple in step, convenient to operate, and guaranteeing the quality of the products, so that the product has good air permeability, moisture-penetrability and full and smooth hand feeling.
Description
Technical field
The present invention relates to a kind of preparation method of wet method PU chemical leather.
Background technology
Leather products is divided into natural and artificial synthetic, natural leather mainly is from animal, artificial synthetic leather mainly contains PVC leather, PU wet method leather and super fine leather, but along with the rapid growth of economy and improving constantly of people's living standard, increasing to the demand of leather.And because of the PVC Boardy Feeling, poor flexibility, can not wash, not environmental protection, airtight, the inferior positions such as plasticizer-containing can not satisfy people's environmental protection higher to leather, healthy requirement, and super fine leather be in research and development test the stage, price is higher, and performance is stable not enough, product technology is still waiting further perfect, therefore the PU wet method leather production technology and the cost that are gradually improved are moderate, the breathable environment-protective leather just is subjected to people's favor gradually, under the overall situation of this large society and economy, constantly improve the fact that PU wet method leather technology has become each enterprise to strive, so we need a kind of new technology to solve this problem.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of wet method PU chemical leather.
The technical solution used in the present invention is:
A kind of preparation method of wet method PU chemical leather comprises dnockout whipping step and wet production step,
Described dnockout whipping step is: the DMF that adds 10-20 part in reactor, then the wood powder that adds 20-30 part, after fully stirring 8-12min, stop after allowing wood powder be scattered among the DMF fully stirring, then in reactor, once add after the defoamer of S-80,1-3 part of C-70,1-3 part of 1-3 part and levelling agent continue to stir 3-7min, add polyurethane resin, after 400-600 rev/min speed stirs 18-22min, utilize vacuum defoamation deaeration 35-45min, filter with 60-100 order screen pack at last;
Described wet production step is: constantly squeeze into impregnating groove in the air pump circulation slurry for preparing, the anion surfactant that also should add 1 part in the impregnating groove, base cloth unreels, before entering the impregnating groove dipping, heat the moisture of removing in the base cloth with ironing roller first, base cloth enters in the impregnating groove, slurry is pulled out from impregnating groove after going deep in the base cloth, with scraper slurry unnecessary on the base cloth is hung, then entry is solidified, and dries at last and batches.
Advantage of the present invention is: step is simple, easy to operate, guarantees quality and the quality of product, so that product has good gas permeability, poisture-penetrability and smooth plentiful feel.
The specific embodiment
Embodiment 1
The preparation method of a kind of wet method PU chemical leather of the present invention comprises dnockout whipping step and wet production step,
Described dnockout whipping step is: the DMF that adds 10 parts in reactor, then the wood powder that adds 20 parts, after fully stirring 8min, stop after allowing wood powder be scattered among the DMF fully stirring, then in reactor, once add after 1 part C-70,1 part S-80,1 part defoamer and levelling agent continue to stir 3min, add polyurethane resin, after 400 rev/mins speed stirs 18-22min, utilize vacuum defoamation deaeration 35min, filter with 60 order screen packs at last;
Described wet production step is: constantly squeeze into impregnating groove in the air pump circulation slurry for preparing, the anion surfactant that also should add 1 part in the impregnating groove, base cloth unreels, before entering the impregnating groove dipping, heat the moisture of removing in the base cloth with ironing roller first, base cloth enters in the impregnating groove, slurry is pulled out from impregnating groove after going deep in the base cloth, with scraper slurry unnecessary on the base cloth is hung, then entry is solidified, and dries at last and batches.
Embodiment 1
The preparation method of a kind of wet method PU chemical leather of the present invention comprises dnockout whipping step and wet production step,
Described dnockout whipping step is: the DMF that adds 15 parts in reactor, then the wood powder that adds 25 parts, after fully stirring 10min, stop after allowing wood powder be scattered among the DMF fully stirring, then in reactor, once add after 2 parts C-70,2 parts S-80,2 parts defoamer and levelling agent continue to stir 5min, add polyurethane resin, after 500 rev/mins speed stirs 18-22min, utilize vacuum defoamation deaeration 40min, filter with 80 order screen packs at last;
Described wet production step is: constantly squeeze into impregnating groove in the air pump circulation slurry for preparing, the anion surfactant that also should add 1 part in the impregnating groove, base cloth unreels, before entering the impregnating groove dipping, heat the moisture of removing in the base cloth with ironing roller first, base cloth enters in the impregnating groove, slurry is pulled out from impregnating groove after going deep in the base cloth, with scraper slurry unnecessary on the base cloth is hung, then entry is solidified, and dries at last and batches.
Embodiment 1
The preparation method of a kind of wet method PU chemical leather of the present invention comprises dnockout whipping step and wet production step,
Described dnockout whipping step is: the DMF that adds 20 parts in reactor, then the wood powder that adds 30 parts, after fully stirring 12min, stop after allowing wood powder be scattered among the DMF fully stirring, then in reactor, once add after 3 parts C-70,3 parts S-80,3 parts defoamer and levelling agent continue to stir 7min, add polyurethane resin, after 600 rev/mins speed stirs 18-22min, utilize vacuum defoamation deaeration 45min, filter with 100 order screen packs at last;
Described wet production step is: constantly squeeze into impregnating groove in the air pump circulation slurry for preparing, the anion surfactant that also should add 1 part in the impregnating groove, base cloth unreels, before entering the impregnating groove dipping, heat the moisture of removing in the base cloth with ironing roller first, base cloth enters in the impregnating groove, slurry is pulled out from impregnating groove after going deep in the base cloth, with scraper slurry unnecessary on the base cloth is hung, then entry is solidified, and dries at last and batches.
Advantage of the present invention is: step is simple, easy to operate, guarantees quality and the quality of product, so that product has good gas permeability, poisture-penetrability and smooth plentiful feel.
Claims (1)
1. the preparation method of a wet method PU chemical leather is characterized in that: comprise dnockout whipping step and wet production step,
Described dnockout whipping step is: the DMF that adds 10-20 part in reactor, then the wood powder that adds 20-30 part, after fully stirring 8-12min, stop after allowing wood powder be scattered among the DMF fully stirring, then in reactor, once add after the defoamer of S-80,1-3 part of C-70,1-3 part of 1-3 part and levelling agent continue to stir 3-7min, add polyurethane resin, after 400-600 rev/min speed stirs 18-22min, utilize vacuum defoamation deaeration 35-45min, filter with 60-100 order screen pack at last;
Described wet production step is: constantly squeeze into impregnating groove in the air pump circulation slurry for preparing, the anion surfactant that also should add 1 part in the impregnating groove, base cloth unreels, before entering the impregnating groove dipping, heat the moisture of removing in the base cloth with ironing roller first, base cloth enters in the impregnating groove, slurry is pulled out from impregnating groove after going deep in the base cloth, with scraper slurry unnecessary on the base cloth is hung, then entry is solidified, and dries at last and batches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210418022 CN102912650A (en) | 2012-10-29 | 2012-10-29 | Method for preparing wet process PU (poly urethane) synthetic leather |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210418022 CN102912650A (en) | 2012-10-29 | 2012-10-29 | Method for preparing wet process PU (poly urethane) synthetic leather |
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| CN102912650A true CN102912650A (en) | 2013-02-06 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307710A (en) * | 2014-09-22 | 2015-01-28 | 浙江西雅普康大制革有限公司 | Bubble removing equipment for synthetic leather processing, and control method thereof |
| CN105200806A (en) * | 2015-09-15 | 2015-12-30 | 卢俊锋 | Manufacturing method for vacuum adsorption pad |
| CN105386326A (en) * | 2015-10-16 | 2016-03-09 | 广东大盈化工有限公司 | Method for obtaining regenerative wet slurry filling leather by recycling leather leftover materials |
| CN105525514A (en) * | 2016-02-23 | 2016-04-27 | 华伦皮塑（苏州）有限公司 | Production method of environment-friendly high-grade office chair leather |
| CN107287366A (en) * | 2017-07-27 | 2017-10-24 | 合肥远科服装设计有限公司 | A kind of preparation method of clothes leather |
| CN107299537A (en) * | 2017-08-18 | 2017-10-27 | 天守(福建)超纤科技股份有限公司 | It is a kind of antifouling wear-resisting to contaminate the preparation method of sofa synthetic leather |
| CN108374287A (en) * | 2018-04-24 | 2018-08-07 | 安徽禾臣新材料有限公司 | A kind of throwing of jewel rubs with High Damping Performance cloth and preparation method thereof |
| CN109322170A (en) * | 2018-11-16 | 2019-02-12 | 南亚塑胶工业（惠州）有限公司 | A kind of preparation method of the artificial skin product of breathing of moisture absorbing and sweat releasing |
| CN109594346A (en) * | 2019-02-20 | 2019-04-09 | 安徽宝博合成革有限公司 | The ultra-thin anti-pressing of one kind becomes artificial leather and its synthetic method |
| CN110016813A (en) * | 2019-04-04 | 2019-07-16 | 天守(福建)超纤科技股份有限公司 | A kind of graphene island sea silk floss synthetic fibre superfine fiber chemical leather preparation method |
-
2012
- 2012-10-29 CN CN 201210418022 patent/CN102912650A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307710A (en) * | 2014-09-22 | 2015-01-28 | 浙江西雅普康大制革有限公司 | Bubble removing equipment for synthetic leather processing, and control method thereof |
| CN105200806A (en) * | 2015-09-15 | 2015-12-30 | 卢俊锋 | Manufacturing method for vacuum adsorption pad |
| CN105200806B (en) * | 2015-09-15 | 2018-05-25 | 卢俊锋 | The production method of vacuum suction pad |
| CN105386326A (en) * | 2015-10-16 | 2016-03-09 | 广东大盈化工有限公司 | Method for obtaining regenerative wet slurry filling leather by recycling leather leftover materials |
| CN105525514A (en) * | 2016-02-23 | 2016-04-27 | 华伦皮塑（苏州）有限公司 | Production method of environment-friendly high-grade office chair leather |
| CN107287366A (en) * | 2017-07-27 | 2017-10-24 | 合肥远科服装设计有限公司 | A kind of preparation method of clothes leather |
| CN107299537A (en) * | 2017-08-18 | 2017-10-27 | 天守(福建)超纤科技股份有限公司 | It is a kind of antifouling wear-resisting to contaminate the preparation method of sofa synthetic leather |
| CN108374287A (en) * | 2018-04-24 | 2018-08-07 | 安徽禾臣新材料有限公司 | A kind of throwing of jewel rubs with High Damping Performance cloth and preparation method thereof |
| CN109322170A (en) * | 2018-11-16 | 2019-02-12 | 南亚塑胶工业（惠州）有限公司 | A kind of preparation method of the artificial skin product of breathing of moisture absorbing and sweat releasing |
| CN109594346A (en) * | 2019-02-20 | 2019-04-09 | 安徽宝博合成革有限公司 | The ultra-thin anti-pressing of one kind becomes artificial leather and its synthetic method |
| CN110016813A (en) * | 2019-04-04 | 2019-07-16 | 天守(福建)超纤科技股份有限公司 | A kind of graphene island sea silk floss synthetic fibre superfine fiber chemical leather preparation method |
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Application publication date: 20130206 |