CN109972399A - Skin-imitated superfine fiber synthetic leather and its preparation method and application - Google Patents
Skin-imitated superfine fiber synthetic leather and its preparation method and application Download PDFInfo
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- CN109972399A CN109972399A CN201910174892.XA CN201910174892A CN109972399A CN 109972399 A CN109972399 A CN 109972399A CN 201910174892 A CN201910174892 A CN 201910174892A CN 109972399 A CN109972399 A CN 109972399A
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- Prior art keywords
- base fabric
- skin
- fabric
- superfine fiber
- fiber synthetic
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
- D06M15/647—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing polyether sequences
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
- D06M23/16—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a kind of skin-imitated superfine fiber synthetic leathers and its preparation method and application, preparation method includes the following steps: that fabric of island-in-sea type non-woven fabrics is impregnated in the DMF solution of oiliness polyurethane resin by (1), it takes out, solidifies in the solution, base fabric must be impregnated after washing;(2) above-mentioned dipping base fabric is dried, in the side of the base fabric of drying, using roll coater single side roller coating aqueous impregnating resin, aqueous impregnating resin penetrates into base fabric
Description
Technical field
The present invention relates to the preparation method and application of polyurethane ultrafine fiber synthetic leather.
Background technique
It is wide by people due to the natural characteristic that natural leather has soft, ventilative, high resilience, comfortable and easy to wear etc. excellent
It is general to be used for small stores and industrial goods, but with the growth of world population, demand multiplication of the mankind to leather, natural leather
(corium) limited source, quality are different and variant with position with the former skin place of production.Natural leather is in process to ring
Border is seriously polluted, and volume recovery is low, and weight is big, and the thickness uniformity is poor, washing shrinks, is hardened, is easy mildew rots.
The base fabric of superfine fiber chemical leather generally uses nonwovens process to produce, due to the fiber in the production process of base fabric
It is split into as the superfine fibre less than 0.55dtex, not only intertwine with each other closer, but also it is vertical to form approximate random three-dimensional
The fibre structure of body distribution, refills to have excellent performance the polyurethane with microcellular structure.The advantages of superfine fiber synthetic leather
Be it is light, cutting property is good, can carry out high automation and cut, and volume recovery is high, and resistance to mildew performance is preferable, and tearing strength stretches by force
Degree is high, and folding resistance is good, and cold resistance is good, good simulation, and VOC (volatile organic compounds) content is low etc..
Most of performance of superfine fiber chemical leather is all superior to natural leather at present, but stereovision, pendency sense and
Corium is compared to there is also deficiencies.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation method and application of skin-imitated superfine fiber synthetic leather, existing to overcome
There is defect existing for technology.
The preparation method of the skin-imitated superfine fiber synthetic leather, includes the following steps:
(1) fabric of island-in-sea type non-woven fabrics is impregnated in the DMF solution of oiliness polyurethane resin, control liquid holdup 100~
300%, it takes out, the resin of fabric of island-in-sea type nonwoven surface is then struck off, in DMF-H2It is solidified in O solution, base must be impregnated after washing
Cloth;
(2) above-mentioned dipping base fabric is dried, in the side of the base fabric of drying, is set using the aqueous dipping of roll coater single side roller coating
Rouge, upper doses 60-150g/m2, aqueous impregnating resin penetrate into base fabricPosition, through 90-130 DEG C dry, then
Be reduced in investment toluene: toluene temperature is 75~90 DEG C, and the time is 1~3 hour;
The weight concentration of the aqueous polyurethane is 25-50%;
(3) base fabric after decrement is dry at 110~130 DEG C, obtain primary base fabric;
(4) then the primary base fabric of acquisition is post-processed, can be obtained the artificial leather by conventional method
Superfine fiber chemical leather;
The method of the post-processing be it is conventional, those skilled in the art can be according to document (such as document: Qu Jian
Wave synthetic leather technology [M] Chemical Industry Press, 2010.) method of report carries out the dyeing of primary base fabric, oils, grinds
The process such as skin, napping obtain aqueous ultrafine fiber polyurethane synthetic leather base fabric, the base fabric can be used for sofa artificial leather, glove leather,
The aqueous polyurethane of difference 100% modulus and solid content may be selected according to the difference of target product in the production of interior leather for automobiles etc.
Doses is realized in lotion, roller coating.
Preferably, the roller coating aqueous impregnating resin, is grouped as by the group of following parts by weight:
It mixes the above components evenly, obtains the aqueous impregnating resin of 25 DEG C of 2000~4000mPa.S of viscosity@;
Solid weight part of the aqueous polyurethane emulsion is 25~55%, is preferably 30~50%;
100% modulus of the aqueous polyurethane emulsion is 1.0~10.0Mpa, is preferably 3.0~5.0MPa;
The wetting agent is polyether modified silicon oil, and commercial product such as XIAMETER OFX-5211FLUID etc. can be used.
The thickener is polyacrylic acid aqueous solution, and commercial product can be usedGel ALA etc..
The present invention is in Sea-island Composite Fiber Synthetic Leather manufacturing process, after non-woven fabrics impregnates the solidification of oiliness polyurethane, warp
Dry single side roller coating aqueous polyurethane again, process control water-base resin infiltration capacity.Waterborne polyurethane resin, fill fiber and solidification
Gap between resin afterwards increases one surface density of base fabric, so that polyurethane is presented from high to low in non-woven fabrics internal density
Change of gradient, by subsequent decrement fibrillation, the internal structure of formation and corium it is extremely close, there is good vertical sense and true
The texture of skin;Oiliness polyurethane resin provides the release of fiber and resin, provides the bubble of water-base resin blended layer after solidification
Hole can be widely applied to prepare the fields such as high-grade leisure leather shoes, high-grade luggage, automotive upholstery.
Detailed description of the invention
Fig. 1 is the electromicroscopic photograph of the product of embodiment 1.
Fig. 2 is the electromicroscopic photograph of the product of embodiment 2.
Fig. 3 is the electromicroscopic photograph of the product of embodiment 3.
Fig. 4 is water-base resin and oleoresin blended layer electromicroscopic photograph.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate this hair
It is bright, rather than limit the scope of protection of the present invention.The improvement and tune that technical staff makes according to the present invention in practical applications
It is whole, still fall within protection scope of the present invention.Raw materials used following embodiment is commercially available or self-control.
Embodiment 1
The preparation step of the skin-imitated superfine fiber synthetic leather of the present embodiment is as follows:
Fabric of island-in-sea type non-woven fabrics being impregnated in the DMF solution of oiliness polyurethane resin, control liquid holdup takes out 300%,
Then the resin for striking off fabric of island-in-sea type nonwoven surface, in DMF-H2It is solidified in O solution, base fabric must be impregnated after washing;
The preparation of roller coating water-base resin:
Table 1
Raw material in table 1 is uniformly mixed, concentration 40%, the aqueous dipping tree that obtained viscosity is 25 DEG C of about 2400mPa.S
Rouge.
The preparation of primary base fabric:
By the dipping base fabric of drying, through roll coater single side roller coating aqueous polyurethane, upper doses 150g/m2, aqueous material penetrates into
To the position of base fabric about 2/3, dried through 120 DEG C;Put into toluene and be reduced again: toluene temperature is 80 DEG C, and the time is 3 small
When;
Primary base fabric can be obtained described according to method reported in the literature by drying, dyeing, oil, grind skin, veneer
Skin-imitated polyurethane superfine fiber chemical leather.
Using the PHENOM desk-top ESEM of Fu Na scientific instrument (Shanghai) Co., Ltd., test result and feel are such as
Under:
Electromicroscopic photograph is shown in Fig. 1, feel: soft and full, kishke feel is strong.
Embodiment 2
The preparation step of the skin-imitated superfine fiber synthetic leather of the present embodiment is as follows:
Fabric of island-in-sea type non-woven fabrics being impregnated in the DMF solution of oiliness polyurethane resin, control liquid holdup takes out 100%,
Then the resin for striking off fabric of island-in-sea type nonwoven surface, in DMF-H2It is solidified in O solution, base fabric must be impregnated after washing;
The preparation of roller coating water-base resin:
Table 2
Raw material in table 2 is uniformly mixed, concentration 30%, the aqueous dipping tree that obtained viscosity is 25 DEG C of about 2200mPa.S
Rouge.
The preparation of primary base fabric:
By the dipping base fabric of drying, through roll coater single side roller coating aqueous polyurethane, upper doses 120g/m2, aqueous material penetrates into
To the position of base fabric about 1/2, dried through 130 DEG C;Put into toluene and be reduced again: toluene temperature is 85 DEG C, and the time is 2 small
When;
Primary base fabric can be obtained described according to method reported in the literature by drying, dyeing, oil, grind skin, veneer
Skin-imitated polyurethane superfine fiber chemical leather.
Using the PHENOM desk-top ESEM of Fu Na scientific instrument (Shanghai) Co., Ltd., test result and feel are such as
Under:
Electromicroscopic photograph is shown in Fig. 2, feel: soft and full, kishke feel is strong.
Embodiment 3
The preparation step of the skin-imitated superfine fiber synthetic leather of the present embodiment is as follows:
Fabric of island-in-sea type non-woven fabrics being impregnated in the DMF solution of oiliness polyurethane resin, control liquid holdup takes out 150%,
Then the resin for striking off fabric of island-in-sea type nonwoven surface, in DMF-H2It is solidified in O solution, base fabric must be impregnated after washing;
The preparation of roller coating water-base resin:
Table 3
Raw material in table 3 is uniformly mixed, concentration 50%, the aqueous dipping tree that obtained viscosity is 25 DEG C of about 3200mPa.S
Rouge.
The preparation of primary base fabric:
By the dipping base fabric of drying, through roll coater single side roller coating aqueous polyurethane, upper doses 100g/m2, aqueous material penetrates into
To the position of base fabric about 1/3, dried through 110 DEG C;Put into toluene and be reduced again: toluene temperature is 90 DEG C, and the time is 1 small
When;
Primary base fabric can be obtained described according to method reported in the literature by drying, dyeing, oil, grind skin, veneer
Skin-imitated polyurethane superfine fiber chemical leather.
Using the PHENOM desk-top ESEM of Fu Na scientific instrument (Shanghai) Co., Ltd., test result and feel are such as
Under:
Electromicroscopic photograph is shown in Fig. 3, feel: soft and full, kishke feel is strong.
Water-base resin and oleoresin blended layer electromicroscopic photograph such as Fig. 4,
From the above various embodiments it is found that the preparation method of skin-imitated polyurethane woven fabric fiber synthetic leather of the invention obtains
Fine and closely woven microcellular structure has the characteristics that plentiful, soft, kishke feel is strong.
Claims (10)
1. the preparation method of skin-imitated superfine fiber synthetic leather, which comprises the steps of:
(1) fabric of island-in-sea type non-woven fabrics is impregnated in the DMF solution of oiliness polyurethane resin, takes out, solidifies in the solution, after washing
Base fabric must be impregnated;
(2) above-mentioned dipping base fabric is dried, in the side of the base fabric of drying, using roll coater single side roller coating aqueous impregnating resin,
Aqueous impregnating resin penetrates into base fabricPosition, drying then puts into toluene and is reduced;
(3) base fabric after decrement is dry, obtain primary base fabric;
(4) then the primary base fabric of acquisition is post-processed, can be obtained the skin-imitated superfine fiber synthetic leather.
2. the method according to claim 1, wherein fabric of island-in-sea type non-woven fabrics is impregnated in oiliness and is gathered in step (1)
In the DMF solution of urethane resin, control liquid holdup takes out 100~300%, then strikes off the tree of fabric of island-in-sea type nonwoven surface
Rouge, in DMF-H2It is solidified in O solution.
3. the method according to claim 1, wherein in step (2), upper doses 60-150g/m2, through 90-130 DEG C
Drying.
4. according to the method described in claim 3, the time is 1~3 hour it is characterized in that, toluene temperature is 75~90 DEG C.
5. according to the method described in claim 3, it is characterized in that, the weight concentration of the aqueous polyurethane is 25-50%.
6. described in any item methods according to claim 1~5, which is characterized in that the roller coating aqueous impregnating resin, by with
The group of lower parts by weight is grouped as:
7. according to the method described in claim 6, it is characterized in that, each component of the roller coating aqueous impregnating resin is mixed
It closes, obtains the aqueous impregnating resin of 25 DEG C of 2000~4000mPaS of viscosity@.
8. according to the method described in claim 6, it is characterized in that, solid weight part of the aqueous polyurethane emulsion is 25
~55%;
100% modulus of the aqueous polyurethane emulsion is 1.0~10.0Mpa.
9. the skin-imitated superfine fiber synthetic leather of any one the method preparation according to claim 1~8.
10. the application of skin-imitated superfine fiber synthetic leather according to claim 9, it is characterised in that applied to preparing skin
Shoes, luggage or automotive upholstery.
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Cited By (4)
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CN110804877A (en) * | 2019-11-20 | 2020-02-18 | 上海华峰超纤科技股份有限公司 | Polyurethane impregnating solution and super-thick high-gram-weight superfine fiber synthetic leather base cloth prepared from same |
CN110983783A (en) * | 2019-12-27 | 2020-04-10 | 上海华峰超纤科技股份有限公司 | High-solid-content artificial leather superfine fiber base cloth and post-treatment manufacturing method thereof |
CN112695516A (en) * | 2021-01-12 | 2021-04-23 | 禾欣可乐丽超纤(海盐)有限公司 | Preparation method of bionic water-based microfiber base fabric |
CN116005462A (en) * | 2022-12-29 | 2023-04-25 | 江苏华峰超纤材料有限公司 | Preparation method of imitation leather waterborne polyurethane microfiber base cloth |
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---|---|---|---|---|
CN110804877A (en) * | 2019-11-20 | 2020-02-18 | 上海华峰超纤科技股份有限公司 | Polyurethane impregnating solution and super-thick high-gram-weight superfine fiber synthetic leather base cloth prepared from same |
CN110804877B (en) * | 2019-11-20 | 2022-05-06 | 上海华峰超纤科技股份有限公司 | Polyurethane impregnating solution and super-thick high-gram-weight superfine fiber synthetic leather base cloth prepared from same |
CN110983783A (en) * | 2019-12-27 | 2020-04-10 | 上海华峰超纤科技股份有限公司 | High-solid-content artificial leather superfine fiber base cloth and post-treatment manufacturing method thereof |
CN112695516A (en) * | 2021-01-12 | 2021-04-23 | 禾欣可乐丽超纤(海盐)有限公司 | Preparation method of bionic water-based microfiber base fabric |
CN112695516B (en) * | 2021-01-12 | 2023-06-02 | 禾欣可乐丽超纤(海盐)有限公司 | Preparation method of bionic water-based microfiber base cloth |
CN116005462A (en) * | 2022-12-29 | 2023-04-25 | 江苏华峰超纤材料有限公司 | Preparation method of imitation leather waterborne polyurethane microfiber base cloth |
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