CN108468227A - Enhance the method for waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate - Google Patents

Enhance the method for waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate Download PDF

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CN108468227A
CN108468227A CN201810190989.5A CN201810190989A CN108468227A CN 108468227 A CN108468227 A CN 108468227A CN 201810190989 A CN201810190989 A CN 201810190989A CN 108468227 A CN108468227 A CN 108468227A
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aluminium
magnesium silicate
silicate
magnesium
water resistance
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汪国水
李清
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JIANGXI MINGCHUAN SCIENCE AND TECHNOLOGY INDUSTRIAL Co Ltd
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JIANGXI MINGCHUAN SCIENCE AND TECHNOLOGY INDUSTRIAL Co Ltd
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0061Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0063Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00Properties of the materials
    • D06N2209/14Properties of the materials having chemical properties
    • D06N2209/142Hydrophobic
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2211/00Specially adapted uses
    • D06N2211/12Decorative or sun protection articles
    • D06N2211/28Artificial leather

Abstract

The invention discloses a kind of methods enhancing waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate, are related to technical field of synthetic leather, include the following steps:(1) drying of aluminium-magnesium silicate, the modification of (2) aluminium-magnesium silicate, the modification of (3) aqueous polyurethane.The made modified magnesium aluminium silicate of the present invention can significantly increase the water resistance of aqueous polyurethane coating, the sanitation performance of aqueous polyurethane coating is improved using its distinctive Large ratio surface simultaneously, make the water resistance of aqueous polyurethane coating and sanitation performance synchronize obtain significant improvement, and water resistance increase rate reaches 65% or more, and sanitation performance increase rate reaches 55% or more.

Description

Enhance the method for waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate
Technical field:
The present invention relates to technical field of synthetic leather, and in particular to a kind of to enhance the aqueous poly- ammonia of use for synthetic leather using aluminium-magnesium silicate The method of ester water resistance.
Background technology:
Synthetic Leather is with gloss is soft, soft, kishke feel is strong, wear-resistant, flex endurant, anti-aging, anti-mildew The advantages that bacterium, cold resistance are good, washable has become the optimal substitute of natural leather at present.However, Synthetic Leather row The resin overwhelming majority that industry uses is solvent type polyurethane resin, poisonous and harmful containing a large amount of dimethylformamide, toluene etc. Chemical solvent, all can there is a large amount of chemical solvent to evaporate into environment in synthetic leather production and use during.
For the problem of environmental pollution for overcoming solvent borne polyurethane to bring, people start to replace using aqueous polyurethane in recent years For solvent borne polyurethane.Aqueous polyurethane is although environmentally protective, but at the same time brings the problem of water resistance declines, very big The application of aqueous polyurethane is limited in degree.In order to solve this problem, people attempt using vegetable oil, modified polyalcohol, Small molecule chain extender and crosslinking agent etc. are modified aqueous polyurethane, but still remain the lance of water resistance and the feature of environmental protection Shield, i.e. water resistance improve, and the feature of environmental protection declines;The feature of environmental protection improves, and water resistance declines.
Patent CN 201410380203.8 discloses a kind of utilization zinc oxide promotion waterborne polyurethane for synthetic leather water resistance Method, using self-control tremelliform zinc oxide to aqueous polyurethane carry out physical modification, so that the water resistance of polyurethane coating film is improved 58.04%, sanitation performance improves 46.02%.But the preparation process of tremelliform zinc oxide is complex, and this method institute The poor repeatability of the size and structural form of tremelliform zinc oxide processed, it is difficult to be applied to industrialization large-scale production.
Invention content:
Technical problem to be solved by the present invention lies in provide a kind of to make aqueous polyurethane coating water resistance and health Performance synchronization obtains the method for enhancing waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate of significant improvement.
The technical problems to be solved by the invention are realized using technical solution below:
The method for being enhanced waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate, is included the following steps:
(1) drying of aluminium-magnesium silicate:Aluminium-magnesium silicate is dried in 100~110 DEG C of baking ovens to constant weight, and through ultramicro grinding Micro mist is made in machine;
(2) modification of aluminium-magnesium silicate:Aluminium-magnesium silicate after drying is added in absolute ethyl alcohol, is dispersed with stirring uniformly, and is added Heat adds hexamethylolmelamine pregnancy ether and ethylene glycol diglycidyl to reflux state 10~30min of insulated and stirred Ether, continues at 2~5h of insulated and stirred under reflux state, and gained mixture is cooled to -10 with the cooling rate of 5~10 DEG C/min ~-5 DEG C of 15~30min of insulated and stirred, then recycle ethyl alcohol through being concentrated under reduced pressure, and condensate residue is dry in 70~80 DEG C of baking ovens To constant weight, micro mist most is made to get modified magnesium aluminium silicate through micronizer afterwards;
(3) modification of aqueous polyurethane:Above-mentioned modified magnesium aluminium silicate is scattered in deionized water, aqueous poly- ammonia is added Ester lotion, and it is heated to reflux state 2~5h of insulated and stirred, cooled to room temperature is to get the poly- ammonia of aluminium-magnesium silicate modified water-soluble Ester lotion.
Aluminium-magnesium silicate, absolute ethyl alcohol, hexamethylolmelamine pregnancy ether and ethylene glycol two shrink sweet in the step (2) The mass ratio of oily ether is 30-50:150-300:5-10:5-10.
The mass ratio of modified magnesium aluminium silicate and aqueous polyurethane emulsion solid content is 5-10 in the step (3):50-100.
What is be added simultaneously with modified magnesium aluminium silicate into deionized water in the step (3) also has amide hydrogenation castor oil.
The mass ratio of the modified magnesium aluminium silicate and amide hydrogenation castor oil is 5-10:0.5-2.
The amide hydrogenation castor oil is made of rilanit special modification, and preparation method is:By rilanit special and fourth It is heated to 95~105 DEG C of insulated and stirred reactions after dicarboxylic anhydride mixing, asparatate is added after acidification reaction, continues to heat Reacted to 135~145 DEG C of insulated and stirreds, 0.1MPa be evacuated to after amidation process and keeps 30min, remove after vacuum from It is so cooled to room temperature, micro mist is made to get amide hydrogenation castor oil through micronizer in obtained solid.
The rilanit special, succinic anhydride, asparatate mass ratio be 20-40:5-10:5-10.
The beneficial effects of the invention are as follows:Modified magnesium aluminium silicate is made by the physical modification to aluminium-magnesium silicate in the present invention, with As modifying agent, made modified magnesium aluminium silicate can significantly increase for hexamethylolmelamine pregnancy ether and ethylene glycol diglycidylether The water resistance of strong aqueous polyurethane coating, while utilizing the wholesomeness of its distinctive Large ratio surface raising aqueous polyurethane coating Can, make the water resistance of aqueous polyurethane coating and sanitation performance synchronize obtain significant improvement, and water resistance increase rate Reach 65% or more, sanitation performance increase rate reaches 55% or more.
Specific implementation mode:
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below Specific embodiment is closed, the present invention is further explained.
Embodiment 1
(1) drying of aluminium-magnesium silicate:Aluminium-magnesium silicate is dried in 100~110 DEG C of baking ovens to constant weight, and through ultramicro grinding Micro mist is made in machine;
(2) modification of aluminium-magnesium silicate:40g aluminium-magnesium silicates after drying are added in 200g absolute ethyl alcohols, are dispersed with stirring It is even, and it is heated to reflux state insulated and stirred 15min, it adds 5g hexamethylolmelamine pregnancy ethers and 5g ethylene glycol two contracts Water glycerin ether, continues at insulated and stirred 3h under reflux state, and gained mixture is cooled to the cooling rate of 5~10 DEG C/min- 10~-5 DEG C of insulated and stirred 30min, then recycle ethyl alcohol through being concentrated under reduced pressure, and condensate residue is dried extremely in 70~80 DEG C of baking ovens Most micro mist is made to get modified magnesium aluminium silicate through micronizer afterwards in constant weight;
(3) modification of aqueous polyurethane:Above-mentioned 50g modified magnesium aluminium silicates are scattered in deionized water, are added aqueous Polyaminoester emulsion (solid content 500g), and it is heated to reflux state insulated and stirred 4h, cooled to room temperature is to get aluminium-magnesium silicate Modified aqueous polyurethane emulsion.
Embodiment 2
(1) drying of aluminium-magnesium silicate:Aluminium-magnesium silicate is dried in 100~110 DEG C of baking ovens to constant weight, and through ultramicro grinding Micro mist is made in machine;
(2) modification of aluminium-magnesium silicate:50g aluminium-magnesium silicates after drying are added in 300g absolute ethyl alcohols, are dispersed with stirring It is even, and it is heated to reflux state insulated and stirred 15min, it adds 8g hexamethylolmelamine pregnancy ethers and 5g ethylene glycol two contracts Water glycerin ether, continues at insulated and stirred 3h under reflux state, and gained mixture is cooled to the cooling rate of 5~10 DEG C/min- 10~-5 DEG C of insulated and stirred 30min, then recycle ethyl alcohol through being concentrated under reduced pressure, and condensate residue is dried extremely in 70~80 DEG C of baking ovens Most micro mist is made to get modified magnesium aluminium silicate through micronizer afterwards in constant weight;
(3) modification of aqueous polyurethane:Above-mentioned 50g modified magnesium aluminium silicates are scattered in deionized water, are added aqueous Polyaminoester emulsion (solid content 500g), and it is heated to reflux state insulated and stirred 4h, cooled to room temperature is to get aluminium-magnesium silicate Modified aqueous polyurethane emulsion.
Embodiment 3
(1) drying of aluminium-magnesium silicate:Aluminium-magnesium silicate is dried in 100~110 DEG C of baking ovens to constant weight, and through ultramicro grinding Micro mist is made in machine;
(2) modification of aluminium-magnesium silicate:50g aluminium-magnesium silicates after drying are added in 300g absolute ethyl alcohols, are dispersed with stirring It is even, and it is heated to reflux state insulated and stirred 15min, it adds 8g hexamethylolmelamine pregnancy ethers and 5g ethylene glycol two contracts Water glycerin ether, continues at insulated and stirred 3h under reflux state, and gained mixture is cooled to the cooling rate of 5~10 DEG C/min- 10~-5 DEG C of insulated and stirred 30min, then recycle ethyl alcohol through being concentrated under reduced pressure, and condensate residue is dried extremely in 70~80 DEG C of baking ovens Most micro mist is made to get modified magnesium aluminium silicate through micronizer afterwards in constant weight;
(3) modification of aqueous polyurethane:By above-mentioned 50g modified magnesium aluminium silicates and 5g amide hydrogenation castor oil be scattered in from In sub- water, aqueous polyurethane emulsion (solid content 500g) is added, and is heated to reflux state insulated and stirred 4h, is naturally cooled to Room temperature is to get aluminium-magnesium silicate modified aqueous polyurethane emulsion.
The preparation of amide hydrogenation castor oil:It is heated to 95~105 DEG C after 30g rilanit specials and 6g succinic anhydrides are mixed Insulated and stirred is reacted, and 5g asparatates are added after acidification reaction, continues to be heated to 135~145 DEG C of insulated and stirred reactions, It is evacuated to 0.1MPa after amidation process and keeps 30min, removes cooled to room temperature after vacuum, obtained solid is through super Micro mist is made to get amide hydrogenation castor oil in atomizer.
Embodiment 4
(1) drying of aluminium-magnesium silicate:Aluminium-magnesium silicate is dried in 100~110 DEG C of baking ovens to constant weight, and through ultramicro grinding Micro mist is made in machine;
(2) modification of aluminium-magnesium silicate:50g aluminium-magnesium silicates after drying are added in 300g absolute ethyl alcohols, are dispersed with stirring It is even, and it is heated to reflux state insulated and stirred 15min, it adds 8g hexamethylolmelamine pregnancy ethers and 5g ethylene glycol two contracts Water glycerin ether, continues at insulated and stirred 3h under reflux state, and gained mixture is cooled to the cooling rate of 5~10 DEG C/min- 10~-5 DEG C of insulated and stirred 30min, then recycle ethyl alcohol through being concentrated under reduced pressure, and condensate residue is dried extremely in 70~80 DEG C of baking ovens Most micro mist is made to get modified magnesium aluminium silicate through micronizer afterwards in constant weight;
(3) modification of aqueous polyurethane:By above-mentioned 50g modified magnesium aluminium silicates and 5g amide hydrogenation castor oil be scattered in from In sub- water, aqueous polyurethane emulsion (solid content 500g) is added, and is heated to reflux state insulated and stirred 4h, is naturally cooled to Room temperature is to get aluminium-magnesium silicate modified aqueous polyurethane emulsion.
The preparation of amide hydrogenation castor oil:It is heated to 95~105 after 40g rilanit specials and 10g succinic anhydrides are mixed 8g asparatates are added after acidification reaction in the reaction of DEG C insulated and stirred, continue to be heated to 135~145 DEG C of insulated and stirreds anti- It answers, 0.1MPa is evacuated to after amidation process and keeps 30min, removes cooled to room temperature after vacuum, obtained solid Micro mist is made to get amide hydrogenation castor oil through micronizer.
Reference examples 1
(1) drying of aluminium-magnesium silicate:Aluminium-magnesium silicate is dried in 100~110 DEG C of baking ovens to constant weight, and through ultramicro grinding Micro mist is made in machine;
(2) modification of aluminium-magnesium silicate:50g aluminium-magnesium silicates after drying are added in 300g absolute ethyl alcohols, are dispersed with stirring It is even, and it is heated to reflux state insulated and stirred 15min, 8g hexamethylolmelamine pregnancy ethers are added, reflux shape is continued at Insulated and stirred 3h under state, gained mixture are cooled to -10~-5 DEG C of insulated and stirred 30min with the cooling rate of 5~10 DEG C/min, Then ethyl alcohol is recycled through being concentrated under reduced pressure, condensate residue is dried in 70~80 DEG C of baking ovens to constant weight, most afterwards through micronizer Micro mist is made to get modified magnesium aluminium silicate;
(3) modification of aqueous polyurethane:Above-mentioned 50g modified magnesium aluminium silicates are scattered in deionized water, are added aqueous Polyaminoester emulsion (solid content 500g), and it is heated to reflux state insulated and stirred 4h, cooled to room temperature is to get aluminium-magnesium silicate Modified aqueous polyurethane emulsion.
Reference examples 2
(1) drying of aluminium-magnesium silicate:Aluminium-magnesium silicate is dried in 100~110 DEG C of baking ovens to constant weight, and through ultramicro grinding Micro mist is made in machine;
(2) modification of aluminium-magnesium silicate:50g aluminium-magnesium silicates after drying are added in 300g absolute ethyl alcohols, are dispersed with stirring It is even, and it is heated to reflux state insulated and stirred 15min, 5g ethylene glycol diglycidylethers are added, are continued under reflux state Insulated and stirred 3h, gained mixture are cooled to -10~-5 DEG C of insulated and stirred 30min with the cooling rate of 5~10 DEG C/min, then Ethyl alcohol is recycled through being concentrated under reduced pressure, condensate residue is dried to constant weight in 70~80 DEG C of baking ovens, is most made afterwards through micronizer Micro mist is to get modified magnesium aluminium silicate;
(3) modification of aqueous polyurethane:Above-mentioned 50g modified magnesium aluminium silicates are scattered in deionized water, are added aqueous Polyaminoester emulsion (solid content 500g), and it is heated to reflux state insulated and stirred 4h, cooled to room temperature is to get aluminium-magnesium silicate Modified aqueous polyurethane emulsion.
Reference examples 3
(1) drying of aluminium-magnesium silicate:Aluminium-magnesium silicate is dried in 100~110 DEG C of baking ovens to constant weight, and through ultramicro grinding Micro mist is made in machine;
(2) modification of aqueous polyurethane:Aluminium-magnesium silicate after above-mentioned 50g is dried is scattered in deionized water, is added Aqueous polyurethane emulsion (solid content 500g), and it is heated to reflux state insulated and stirred 4h, cooled to room temperature is to get silicic acid Magnalium modified aqueous polyurethane emulsion.
Embodiment 5
It is utilized respectively embodiment 1-4 and prepares aluminium-magnesium silicate modified aqueous polyurethane emulsion, and be arranged and be modified in aluminium-magnesium silicate When do not add the reference examples 1 of ethylene glycol diglycidylether, do not add hexamethylolmelamine six when aluminium-magnesium silicate is modified The reference examples 2 of methyl ether, the reference examples 3 for not carrying out aluminium-magnesium silicate modification, using 201410380203.8 embodiments 1 of patent CN as Reference examples 4, with the aqueous polyurethane emulsion that is not modified example 5 as a contrast, wherein the component of aqueous polyurethane emulsion used It is identical with each group distribution ratio.
The performance for measuring made aqueous polyurethane emulsion film, as shown in table 1-1 and table 1-2.
The performance of table 1-1 aqueous polyurethane emulsion films
The performance of table 1-2 aqueous polyurethane emulsion films
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (7)

1. utilizing the method for aluminium-magnesium silicate enhancing waterborne polyurethane for synthetic leather water resistance, which is characterized in that include the following steps:
(1) drying of aluminium-magnesium silicate:Aluminium-magnesium silicate is dried in 100~110 DEG C of baking ovens to constant weight, and through ultramicro grinding mechanism At micro mist;
(2) modification of aluminium-magnesium silicate:Aluminium-magnesium silicate after drying is added in absolute ethyl alcohol, is dispersed with stirring uniformly, and be heated to Reflux state 10~30min of insulated and stirred, adds hexamethylolmelamine pregnancy ether and ethylene glycol diglycidylether, after Continue 2~5h of insulated and stirred under reflux state, gained mixture is cooled to -10~-5 DEG C with the cooling rate of 5~10 DEG C/min 15~30min of insulated and stirred, then recycles ethyl alcohol through being concentrated under reduced pressure, and condensate residue is dried in 70~80 DEG C of baking ovens to perseverance Weight, is most made micro mist to get modified magnesium aluminium silicate through micronizer afterwards;
(3) modification of aqueous polyurethane:Above-mentioned modified magnesium aluminium silicate is scattered in deionized water, aqueous polyurethane breast is added Liquid, and it is heated to reflux state 2~5h of insulated and stirred, cooled to room temperature is to get aluminium-magnesium silicate modified aqueous polyurethane breast Liquid.
2. the method according to claim 1 for enhancing waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate, special Sign is:Aluminium-magnesium silicate, absolute ethyl alcohol, hexamethylolmelamine pregnancy ether and ethylene glycol two shrink sweet in the step (2) The mass ratio of oily ether is 30-50:150-300:5-10:5-10.
3. the method according to claim 1 for enhancing waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate, special Sign is:The mass ratio of modified magnesium aluminium silicate and aqueous polyurethane emulsion solid content is 5-10 in the step (3):50-100.
4. the method according to claim 1 for enhancing waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate, special Sign is:What is be added simultaneously with modified magnesium aluminium silicate into deionized water in the step (3) also has amide hydrogenation castor oil.
5. the method according to claim 4 for enhancing waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate, special Sign is:The mass ratio of the modified magnesium aluminium silicate and amide hydrogenation castor oil is 5-10:0.5-2.
6. the method according to claim 4 for enhancing waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate, special Sign is:The amide hydrogenation castor oil is made of rilanit special modification, and preparation method is:By rilanit special and fourth two It is heated to 95~105 DEG C of insulated and stirred reactions after acid anhydrides mixing, asparatate is added after acidification reaction, continues to be heated to 135~145 DEG C of insulated and stirreds are reacted, and 0.1MPa is evacuated to after amidation process and keeps 30min, remove nature after vacuum It is cooled to room temperature, micro mist is made to get amide hydrogenation castor oil through micronizer in obtained solid.
7. the method according to claim 6 for enhancing waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate, special Sign is:The rilanit special, succinic anhydride, asparatate mass ratio be 20-40:5-10:5-10.
CN201810190989.5A 2018-03-08 2018-03-08 Enhance the method for waterborne polyurethane for synthetic leather water resistance using aluminium-magnesium silicate Pending CN108468227A (en)

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CN111269558A (en) * 2020-03-25 2020-06-12 牡丹江医学院 Preparation method of polyurethane semipermeable membrane for retaining needle to fix dressing surface layer

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