CN112895525A - Preparation method of solvent-free automotive interior synthetic leather - Google Patents
Preparation method of solvent-free automotive interior synthetic leather Download PDFInfo
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- CN112895525A CN112895525A CN202110052210.5A CN202110052210A CN112895525A CN 112895525 A CN112895525 A CN 112895525A CN 202110052210 A CN202110052210 A CN 202110052210A CN 112895525 A CN112895525 A CN 112895525A
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- 239000002649 leather substitute Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000003063 flame retardant Substances 0.000 claims abstract description 58
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000000203 mixture Substances 0.000 claims abstract description 44
- 239000002344 surface layer Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000003756 stirring Methods 0.000 claims abstract description 35
- 238000001035 drying Methods 0.000 claims abstract description 27
- 239000010410 layer Substances 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 17
- 238000007790 scraping Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 13
- 239000000049 pigment Substances 0.000 claims description 13
- 239000004615 ingredient Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920005862 polyol Polymers 0.000 claims description 9
- 150000003077 polyols Chemical class 0.000 claims description 9
- 239000002518 antifoaming agent Substances 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 239000002562 thickening agent Substances 0.000 claims description 8
- 238000004383 yellowing Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000003786 synthesis reaction Methods 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 5
- 238000013329 compounding Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 4
- 239000000347 magnesium hydroxide Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 229920005749 polyurethane resin Polymers 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 239000010985 leather Substances 0.000 abstract description 6
- 230000000704 physical effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001556 precipitation Methods 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 229920002635 polyurethane Polymers 0.000 description 8
- 230000007613 environmental effect Effects 0.000 description 7
- 239000000779 smoke Substances 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- 229910052787 antimony Inorganic materials 0.000 description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 125000003636 chemical group Chemical group 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 238000004807 desolvation Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000012257 stirred material Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention belongs to the technical field of synthetic leather, and particularly relates to solvent-free automotive interior synthetic leather and a preparation method thereof. The method comprises the following steps: the prepared water-based surface layer mixture is processed by machine production and is scraped to obtain a water-based surface layer; step two: and (2) mixing the component A and the component B, stirring to obtain a solvent-free bottom layer mixture, coating and scraping the solvent-free bottom layer mixture on the water-based surface layer obtained in the step (1), drying, attaching the base cloth, putting the base cloth into an oven for curing, drying, and peeling to obtain the solvent-free automotive interior synthetic leather. The invention has the beneficial effects that: according to the solvent-free automotive interior synthetic leather, the flame retardant is not added in the surface layer, the physical properties of the leather are influenced due to the addition of the flame retardant in the surface layer, the flame retardant effect of the synthetic leather is ensured, and the phenomenon that the appearance of the leather surface is influenced due to the precipitation of the flame retardant can be effectively avoided.
Description
Technical Field
The invention belongs to the technical field of synthetic leather, and particularly relates to solvent-free automotive interior synthetic leather and a preparation method thereof.
Background
With the current international requirements on safety and environmental protection of automotive interiors, including (smell, VOC, TVOC, flame retardation, atomization), environmental-friendly artificial leather synthetic leather is receiving more and more attention, wherein solvent-free polyurethane synthetic leather and waterborne polyurethane synthetic leather are the most concerned environmental-friendly polyurethane materials in recent years, and have the characteristics of environmental protection, no toxicity, excellent usability and the like, so that the synthetic leather becomes a popular research goal in the present stage.
At present, about 80 percent of flame retardants used for internationally modifying resin are halogen-containing flame retardants, wherein bromine and antimony are the most common, and the halogen-containing flame retardants have the advantages of high efficiency, small using amount, low cost, less influence on the performance of PVC and PU materials and wide application. Most of flame-retardant PU and PVC synthetic leather sold in the market at present are added with flame retardants containing antimony and bromine materials, part of bromine flame retardants generate toxic carcinogens (PBbD) and (PBDF) when being combusted, antimony flame retardants generate light-smoke heavy metals when being combusted, and a large amount of unpleasant odor can suffocate people to die. Both materials generate a large amount of smoke and corrosive gas during combustion, new environmental problems can be further generated, the current environmental protection and safety requirements cannot be met, and the materials are not good in adhesion with isocyanate. The simple addition of melamine, aluminum flame retardants, magnesium hydroxide and other environmentally friendly flame retardants has a flame retardant effect, but cannot meet the requirements of automotive interior materials.
The components of the waterborne polyurethane and the solvent-free polyurethane both contain ammonia, the ammonia is colorless and has strong pungent odor, and the ammonia has corrosion and stimulation effects on human bodies and skin tissues, has stimulation and corrosion effects on respiratory tracts of human bodies and weakens the resistance of human bodies to diseases. Therefore, a deammoniation treatment is required.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a solvent-free automobile interior synthetic leather with good performance and a preparation method thereof.
In order to solve the technical problems, the invention adopts the technical scheme that: providing a preparation method of solvent-free automotive interior synthetic leather, wherein the solvent-free automotive interior synthetic leather comprises a water-based surface layer and a solvent-free bottom layer;
the preparation method comprises the following steps:
the method comprises the following steps: the prepared water-based surface layer mixture is processed by machine production and is scraped to obtain a water-based surface layer;
the water-based surface layer mixture is prepared from the following raw materials in parts by weight: aqueous polyurethane resin: 100 parts of (A); pigment: 5 parts of a mixture; defoaming agent: 0.2 part; leveling agent: 2 parts of (1); a hand feeling agent: 2.5 parts; thickening agent: 0.3-0.5 part; curing agent: 1.5 parts;
the preparation method of the aqueous surface layer mixture comprises the following steps:
step 11: stirring water-based resin, adding a defoaming agent, a pigment, a flatting agent and a hand feeling agent for fusion, uniformly dispersing, and then adding a thickening agent for viscosity adjustment, wherein the viscosity is adjusted to 2000-2500cps to obtain water-based ingredients;
step 12: placing the aqueous ingredients into a vacuum defoaming machine for defoaming and amine removal;
step 13: adding a curing agent and stirring to obtain a water-based surface layer mixture;
step two: mixing the component A and the component B, stirring to obtain a solvent-free bottom layer mixture, coating and scraping the solvent-free bottom layer mixture on the water-based surface layer obtained in the step 1, drying, attaching base cloth, curing in an oven after attaching the base cloth, curing, drying, and peeling to obtain the solvent-free automotive interior synthetic leather;
the component A is prepared from the following raw materials in parts by weight: polyol: 100 parts of (A); 0.3-0.5 part of environment-friendly catalyst; a first flame retardant: 20 parts of (1); a second flame retardant: 30 parts of (1); a third flame retardant: 20 parts of (1); anti-yellowing agent: 5 parts of a mixture;
the preparation method of the component A comprises the following steps: adding polyol into an environment-friendly catalyst, stirring, adding a first flame retardant after uniformly stirring, adding a second flame retardant after fully dispersing, stirring again, adding a third flame retardant after stirring and dispersing, adding an anti-yellowing agent, and uniformly stirring and well dispersing to obtain a component A;
the polyol is produced by Zhejiang Huafeng synthetic resin, and has the trade mark of JF-NS-6038;
the environment-friendly catalyst is produced by Zhejiang Huafeng synthesis Limited company and has the trade mark of JF-NS-C228;
the first flame retardant is produced by Guangdong Yuxing flame-retardant new material GmbH, and is formed by mixing a flame retardant with the brand number of PN-X and magnesium hydroxide produced by Nantong Baokuaxiao chemical GmbH, wherein the mixing weight ratio is 1-3: 10;
the second flame retardant is produced by Jiaxing ice fire new material science and technology limited company, and is prepared by compounding and mixing a flame retardant with the brand number of SW-5702 and aluminum hydroxide of Nantong Baofenghua chemical limited company, wherein the weight ratio of the mixture is 1-2: 10;
the third flame retardant is a silicon flame retardant produced by American general company, and the mark is SFR-100;
the component B is an isopolyurethane.
Preferably, in the preparation method of the solvent-free synthetic leather for automotive interiors, the step one of "processing the prepared aqueous surface layer mixture on a machine to produce and coating and scraping the aqueous surface layer" includes: performing machine production on the prepared water-based surface layer mixture, wherein the first coating gap is 10 seconds for coating and scraping, the drying time is 1.5 minutes at the temperature of a drying oven of 110 ℃, the second coating gap is 11 seconds at the temperature of 120 ℃, and the drying time is 2 minutes; obtaining the water-based surface layer.
Preferably, in the above preparation method of the solvent-free synthetic leather for automotive interiors, the step two of mixing the component a and the component B, stirring to obtain a solvent-free bottom layer mixture, coating and scraping the solvent-free bottom layer mixture onto the aqueous surface layer obtained in the step 1, drying, attaching the base cloth, curing in an oven, curing and drying, and peeling to obtain the solvent-free synthetic leather for automotive interiors specifically comprises the following steps:
and (2) mixing the component A and the component B, stirring to obtain a solvent-free bottom layer mixture, coating and scraping the solvent-free bottom layer mixture on the water-based surface layer obtained in the step (1) by using a gap of 30 seconds, drying, then attaching base cloth, drying for 1 minute at the temperature of 120 ℃, putting the base cloth into a 130-DEG oven for curing, curing and drying, and then stripping to obtain the solvent-free automotive interior synthetic leather.
Preferably, in the preparation method of the solvent-free automotive interior synthetic leather, the "preparation method of the aqueous surface layer mixture" in the first step specifically includes:
step 11: stirring 100g of water-based resin at the rotating speed of 300rpm, then adding 0.2g of defoaming agent, 5g of pigment, 2g of flatting agent and 2.5g of hand feeling agent, fusing to uniformly disperse the resin, then adding 0.3g of thickening agent to adjust the viscosity, wherein the viscosity is adjusted to 2000-2500cps, and after the viscosity is adjusted, stirring at the rotating speed of 800rpm to disperse the pigment, so that the pigment is fully dispersed to obtain water-based ingredients;
step 12: placing the aqueous ingredients into a vacuum defoaming machine with negative pressure of 0.1MPA and temperature of 40 ℃ for defoaming and amine removal;
step 13: then, 1.5g of a curing agent was added thereto and stirred to obtain a water-based surface layer mixture.
Preferably, in the preparation method of the solvent-free automotive interior synthetic leather, the anti-yellowing agent is produced by Sansheng group of hong Kong or Quanzhou Ke chemical Co., Ltd, and the mark is UV-260; the component B is isopolyamino acid ester produced by Zhejiang Huafeng synthesis limited company, and the brand is JF-NS-6030B.
The invention provides another technical scheme for providing the solvent-free automotive interior synthetic leather prepared by the preparation method of the solvent-free automotive interior synthetic leather.
The invention has the beneficial effects that: the solvent-free automotive interior synthetic leather provided by the invention considers that flame retardance is an important requirement on automotive leather, so that flame retardant is not added to a surface layer, physical properties can be influenced due to the addition of the flame retardant to the surface layer, three flame retardants compounded by adding the flame retardant to a bonding layer can be used for ensuring the flame retardant effect of the synthetic leather, and the influence of the separation of the flame retardant on the attractiveness of the leather surface can be effectively avoided; the synthetic leather prepared by the formula provided by the invention does not release gas during combustion, can effectively reduce smoke density by compounding with the second flame retardant, generates a smoke suppression effect, avoids smoke suffocation death, can be carbonized by the third flame retardant, and does not generate dust during combustion.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description will be given with reference to the embodiments.
Example 1
A preparation method of solvent-free automotive interior synthetic leather comprises a water-based surface layer and a solvent-free bottom layer; the solvent-free bottom layer is formed by mixing the component A and the component B.
The preparation method comprises the following steps:
the method comprises the following steps: performing machine production on the prepared water-based surface layer mixture, scraping the coating in a first coating interval of 10 seconds, drying for 1.5 minutes at a drying oven temperature of 110 ℃, drying for 2 minutes at a second coating interval of 11 seconds at a temperature of 120 ℃; obtaining a water-based surface layer;
the preparation method of the aqueous surface layer mixture comprises the following steps:
step 11: 100g of water-based resin is taken to be stirred at the rotating speed of 300rpm, then 0.2g of defoaming agent, 5g of pigment, 2g of flatting agent and 2.5g of hand feeling agent are added to be fused for uniform dispersion, then 0.3g of thickening agent is added for viscosity adjustment (the viscosity is adjusted to 2000-2500cps), and the stirring rotating speed can be increased to 800rpm for pigment dispersion after adjustment for full dispersion.
Step 12: placing the prepared water-based surface layer into a vacuum defoaming machine with negative pressure of 0.1 and temperature of 40 ℃ for secondary defoaming and amine removal (the first time is the defoaming in the process of making resin by a resin manufacturer);
step 13: measuring the viscosity of the water-based ingredient with good desolvation and ammonia removal, wherein the viscosity is 2500-3000 cps, and then adding 1.5g of curing agent for stirring, so that the water-based ingredient has good film forming property and improves the bonding strength with a solvent-free agent.
The aqueous polyurethane resin is obtained from Wanhua chemical group corporation
8050；
The pigment is TSELR01 black of Suzhou brand science and technology limited;
the flatting agent is of Srocco
8030F；
The hand feeling is Bx-758 of Shanghai Byixuan chemical industry Co., Ltd;
the defoaming agent is LW-5150 of Jiaxing Rong chemical technology Co., Ltd;
the thickener is VE31W of Wanhua chemical group GmbH
U605；
The curing agent is of Wanhua chemical group, Inc
166；
Step two: mixing the component A and the component B of 75g, stirring the mixture by a machine head to obtain a solvent-free bottom layer mixture, then coating and scraping the solvent-free bottom layer mixture on the water-based surface layer obtained in the step 1 at a gap of 30 seconds, drying the mixture to a semi-dry state (the state is that hands feel sticky when touching), the time is 1 minute and the temperature is 120 ℃, then adhering base cloth, adhering the base cloth, then putting the base cloth into an oven at the temperature of 130 ℃ for adhering and curing for 8 minutes to 9 minutes, cooling the base cloth after curing and drying, and then peeling the base cloth to obtain the solvent-free automotive interior synthetic leather.
The preparation method of the component A comprises the following steps: taking 100g of polyol, adding 0.3-0.5 g of environment-friendly catalyst, stirring at the rotation speed of 1500rpm, adding 20g of first flame retardant after uniformly stirring, stirring after fully dispersing, adding 30g of second flame retardant, stirring again, adjusting the rotation speed to 2000rmp, stirring and dispersing, then adding 20g of third flame retardant on the right, blending and stirring, adding 5g of anti-yellowing agent, uniformly stirring and dispersing, and finishing the process within about 30 minutes. Cooling the stirred material for 20 minutes to test the viscosity of the material, wherein the viscosity is 1500CPS-2000CPS, and obtaining a component A;
the polyol is a polyol which is produced by Zhejiang Huafeng synthetic resin Limited company, does not contain styrene or fluorine and meets the international environmental protection requirement, and the trade mark is JF-NS-6038;
the environment-friendly catalyst is produced by Zhejiang Huafeng synthesis Limited company and has the trade mark of JF-NS-C228;
the first flame retardant is produced by Guangdong Yuxing flame-retardant new material GmbH, and is formed by mixing a flame retardant with the brand number of PN-X and magnesium hydroxide produced by Nantong Baokuaxiao chemical GmbH, wherein the mixing weight ratio is 1-3: 10;
the second flame retardant is produced by Jiaxing ice fire new material science and technology limited company, and is prepared by compounding and mixing a flame retardant with the brand number of SW-5702 and aluminum hydroxide of Nantong Baofenghua chemical limited company, wherein the weight ratio of the mixture is 1-2: 10;
the third flame retardant is a silicon flame retardant produced by American general company, and the mark is SFR-100;
the anti-yellowing agent is produced by Sansheng group of hong Kong or Quanzhou Kexio chemical Co., Ltd and has the brand number of UV-260;
the component B is isopolyamino acid ester produced by Zhejiang Huafeng synthesis limited company, and the brand is JF-NS-6030B.
Effect comparison test:
1: the solvent-free automotive interior synthetic leather obtained in example 1;
2: is PVC automobile interior synthetic leather sold in the current market;
3: the Polyurethane (PU) automotive interior synthetic leather is commercially available in the current market;
the physical property pair ratios are shown in table 1.
TABLE 1
The environmental and safety performance pairs are shown in table 2.
TABLE 2
In conclusion, compared with the PVC and PU automobile leather on the market, the solvent-free automobile interior leather obtained by the invention has better performance in physical property, environmental protection and safety. The preparation method of the solvent-free automotive interior synthetic leather has the advantages of slightly high production cost and short production period, and is suitable for industrial production.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention in the specification or directly or indirectly applied to the related technical field are included in the scope of the present invention.
Claims (6)
1. A preparation method of solvent-free automotive interior synthetic leather is characterized by comprising the following steps:
the method comprises the following steps: the prepared water-based surface layer mixture is processed by machine production and is scraped to obtain a water-based surface layer;
the water-based surface layer mixture is prepared from the following raw materials in parts by weight: aqueous polyurethane resin: 100 parts of (A); pigment: 5 parts of a mixture; defoaming agent: 0.2 part; leveling agent: 2 parts of (1); a hand feeling agent: 2.5 parts; thickening agent: 0.3-0.5 part; curing agent: 1.5 parts;
the preparation method of the aqueous surface layer mixture comprises the following steps:
step 11: stirring water-based resin, adding a defoaming agent, a pigment, a flatting agent and a hand feeling agent for fusion, uniformly dispersing, and then adding a thickening agent for viscosity adjustment, wherein the viscosity is adjusted to 2000-2500cps to obtain water-based ingredients;
step 12: placing the aqueous ingredients into a vacuum defoaming machine for defoaming and amine removal;
step 13: adding a curing agent and stirring to obtain a water-based surface layer mixture;
step two: mixing the component A and the component B, stirring to obtain a solvent-free bottom layer mixture, coating and scraping the solvent-free bottom layer mixture on the water-based surface layer obtained in the step 1, drying, attaching base cloth, curing in an oven after attaching the base cloth, curing, drying, and peeling to obtain the solvent-free automotive interior synthetic leather;
the component A is prepared from the following raw materials in parts by weight: polyol: 100 parts of (A); 0.3-0.5 part of environment-friendly catalyst; a first flame retardant: 20 parts of (1); a second flame retardant: 30 parts of (1); a third flame retardant: 20 parts of (1); anti-yellowing agent: 5 parts of a mixture;
the preparation method of the component A comprises the following steps: adding polyol into an environment-friendly catalyst, stirring, adding a first flame retardant after uniformly stirring, adding a second flame retardant after fully dispersing, stirring again, adding a third flame retardant after stirring and dispersing, adding an anti-yellowing agent, and uniformly stirring and well dispersing to obtain a component A;
the polyol is produced by Zhejiang Huafeng synthetic resin, and has the trade mark of JF-NS-6038;
the environment-friendly catalyst is produced by Zhejiang Huafeng synthesis Limited company and has the trade mark of JF-NS-C228;
the first flame retardant is produced by Guangdong Yuxing flame-retardant new material GmbH, and is formed by mixing a flame retardant with the brand number of PN-X and magnesium hydroxide produced by Nantong Baokuaxiao chemical GmbH, wherein the mixing weight ratio is 1-3: 10;
the second flame retardant is produced by Jiaxing ice fire new material science and technology limited company, and is prepared by compounding and mixing a flame retardant with the brand number of SW-5702 and aluminum hydroxide of Nantong Baofenghua chemical limited company, wherein the weight ratio of the mixture is 1-2: 10;
the third flame retardant is a silicon flame retardant produced by American general company, and the mark is SFR-100;
the component B is an isopolyurethane.
2. The preparation method of the solvent-free automotive interior synthetic leather according to claim 1, wherein the step one of "processing the prepared aqueous surface layer mixture to produce the coated and scraped aqueous surface layer" comprises the following steps: performing machine production on the prepared water-based surface layer mixture, wherein the first coating gap is 10 seconds for coating and scraping, the drying time is 1.5 minutes at the temperature of a drying oven of 110 ℃, the second coating gap is 11 seconds at the temperature of 120 ℃, and the drying time is 2 minutes; obtaining the water-based surface layer.
3. The method for preparing the solvent-free automotive interior synthetic leather according to claim 1, wherein the step two of mixing the component A and the component B, stirring to obtain a solvent-free bottom layer mixture, coating and scraping the solvent-free bottom layer mixture on the water-based surface layer obtained in the step 1, drying, attaching the base cloth, curing in an oven, curing and drying, and peeling to obtain the solvent-free automotive interior synthetic leather specifically comprises the following steps:
and (2) mixing the component A and the component B, stirring to obtain a solvent-free bottom layer mixture, coating and scraping the solvent-free bottom layer mixture on the water-based surface layer obtained in the step (1) by using a gap of 30 seconds, drying, then attaching base cloth, drying for 1 minute at the temperature of 120 ℃, putting the base cloth into a 130-DEG oven for curing, curing and drying, and then stripping to obtain the solvent-free automotive interior synthetic leather.
4. The preparation method of the solvent-free automotive interior synthetic leather according to claim 1, wherein the preparation method of the aqueous surface layer mixture in the first step is specifically as follows:
step 11: stirring 100g of water-based resin at the rotating speed of 300rpm, then adding 0.2g of defoaming agent, 5g of pigment, 2g of flatting agent and 2.5g of hand feeling agent, fusing to uniformly disperse the resin, then adding 0.3g of thickening agent to adjust the viscosity, wherein the viscosity is adjusted to 2000-2500cps, and after the viscosity is adjusted, stirring at the rotating speed of 800rpm to disperse the pigment, so that the pigment is fully dispersed to obtain water-based ingredients;
step 12: placing the aqueous ingredients into a vacuum defoaming machine with negative pressure of 0.1MPA and temperature of 40 ℃ for defoaming and amine removal;
step 13: then, 1.5g of a curing agent was added thereto and stirred to obtain a water-based surface layer mixture.
5. The method for preparing the solvent-free automotive interior synthetic leather according to claim 1, wherein the anti-yellowing agent is produced by Sansheng group of hong Kong or Quanzhou Ke chemical Co., Ltd and has a brand number of UV-260; the component B is isopolyamino acid ester produced by Zhejiang Huafeng synthesis limited company, and the brand is JF-NS-6030B.
6. A solvent-free automotive interior synthetic leather produced by the method for producing a solvent-free automotive interior synthetic leather according to any one of claims 1 to 5.
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| CN113857682A (en) * | 2021-09-29 | 2021-12-31 | 世联汽车内饰（苏州）有限公司 | Laser carving processing method for synthetic leather |
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