CN114573788B - High-strength impact-resistant polyurethane interior wall decorative plate raw material composition, interior wall decorative plate and preparation method thereof - Google Patents
High-strength impact-resistant polyurethane interior wall decorative plate raw material composition, interior wall decorative plate and preparation method thereof Download PDFInfo
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- CN114573788B CN114573788B CN202011393353.4A CN202011393353A CN114573788B CN 114573788 B CN114573788 B CN 114573788B CN 202011393353 A CN202011393353 A CN 202011393353A CN 114573788 B CN114573788 B CN 114573788B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3225—Polyamines
- C08G18/3237—Polyamines aromatic
- C08G18/324—Polyamines aromatic containing only one aromatic ring
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
- C08G18/3855—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur
- C08G18/3863—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur containing groups having sulfur atoms between two carbon atoms, the sulfur atoms being directly linked to carbon atoms or other sulfur atoms
- C08G18/3865—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur containing groups having sulfur atoms between two carbon atoms, the sulfur atoms being directly linked to carbon atoms or other sulfur atoms containing groups having one sulfur atom between two carbon atoms
- C08G18/3868—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur containing groups having sulfur atoms between two carbon atoms, the sulfur atoms being directly linked to carbon atoms or other sulfur atoms containing groups having one sulfur atom between two carbon atoms the sulfur atom belonging to a sulfide group
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4244—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups
- C08G18/4247—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups derived from polyols containing at least one ether group and polycarboxylic acids
- C08G18/425—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups derived from polyols containing at least one ether group and polycarboxylic acids the polyols containing one or two ether groups
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- C—CHEMISTRY; METALLURGY
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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Abstract
The application relates to a high-strength impact-resistant polyurethane interior wall decorative plate raw material composition, which comprises a combined polyether polyol and isocyanate, wherein the combined polyether polyol comprises the following raw material components in parts by weight: 25-35 parts of a first polyether polyol; 50 to 60 parts of a second polyether polyol; 5 to 10 parts of a third polyether polyol; 10-15 parts of polyester polyol; 3-5 parts of small molecule chain extender; 2-3 parts of foam stabilizer; 2.5-5 parts of catalyst; 10-20 parts of flame-retardant viscosity reducer; 0.2-0.5 part of chemical foaming agent; wherein the total parts by weight of the polyether polyol and the polyester polyol is 100 parts by weight. The application also relates to a high-strength impact-resistant polyurethane interior wall decorative plate and a preparation method thereof. The polyurethane interior wall decorative panel described herein has a simple process, higher compressive strength and lower low temperature dimensional stability.
Description
Technical Field
The present application relates to the technical field of polyurethane and building materials. In particular, the application relates to a high-strength impact-resistant polyurethane interior wall decorative plate raw material composition, an interior wall decorative plate and a preparation method thereof.
Background
The polyurethane material has the advantages of light weight, good heat preservation effect, good sound insulation effect, convenient construction and the like, and various heat preservation boards made of the polyurethane material are widely applied to wall heat preservation and decoration. For example, ZL200510045523.9 discloses a polyurethane rigid foam board, wherein a layer of polymer sheet is provided on the upper and lower surfaces of the polyurethane layer, and the sheet contains nonwoven fabrics. ZL200920039147.6 discloses a polyurethane board heat-insulating decorative board, wherein a paint finish layer is attached to the outer side of a polyurethane foaming board, and a finish layer is attached to the outer side of the finish layer. CN202139785U discloses a perlite and polyurethane composite inner wall decorative board, which comprises an outer wall stone decorative board, a perlite composite layer and a polyurethane heat-insulating layer in sequence. The polyurethane has complex production process and complex post-treatment. The polyurethane decorative board is produced by compounding hard foam polyurethane with boards with different decorative surfaces (common aluminum plates), but the impact strength of the inner surface is poor, and in order to improve the impact strength, a cement mortar layer or an inorganic board and the like are generally adopted for compound reinforcing treatment, so that the overall process is increased, and the quality of the boards is increased.
For this reason, there is a continuous need in the art to develop a raw material composition for a high-strength impact-resistant polyurethane interior wall decorative sheet, an interior wall decorative sheet, and a method for preparing the same.
Disclosure of Invention
The invention aims to overcome the defect of low impact strength of a polyurethane interior wall decorative plate in the prior art, and provides a raw material composition of the polyurethane interior wall decorative plate under the condition of no increase of cost. The impact strength of the obtained polyurethane interior wall decorative board can be remarkably improved by adopting the polyurethane interior wall decorative board raw material composition. And the polyurethane interior wall decorative board has simple preparation process and does not increase production cost.
The purpose of the application is to provide a method for preparing a high-strength impact-resistant polyurethane interior wall decorative board by using the raw material composition.
It is also an object of the present application to provide a high strength impact-resistant interior wall decorative sheet prepared by the method as described above.
In order to solve the technical problems, the application provides the following technical scheme.
In a first aspect, the present application provides a high-strength impact-resistant polyurethane interior wall decorative panel raw material composition, comprising a combined polyether polyol and an isocyanate, characterized in that the combined polyether polyol comprises the following raw material components in parts by weight:
25-35 parts of a first polyether polyol;
50 to 60 parts of a second polyether polyol;
5 to 10 parts of a third polyether polyol;
10-15 parts of polyester polyol;
3-5 parts of small molecule chain extender;
2-3 parts of foam stabilizer;
2.5-5 parts of catalyst;
10-20 parts of flame-retardant viscosity reducer; and
0.2-0.5 part of chemical foaming agent;
wherein the total parts by weight of the polyether polyol and the polyester polyol is 100 parts by weight;
wherein the first polyether polyol has an average functionality of 6-7, a hydroxyl value of 410-440mgKOH/g, a viscosity of 28000-36000 mPa.s at 25 ℃, and a moisture of less than 0.10wt%;
wherein the second polyether polyol has a functionality of 4-4.5, a hydroxyl value of 54.5-57.5mgKOH/g, a viscosity at 25 ℃ of 2500-3500 mPa.s and a moisture of less than 0.10wt%;
wherein the third polyether polyol has a functionality of 2, a hydroxyl value of 245-275mgKOH/g, a viscosity of 270-370 mPa.s at 25 ℃, and a moisture of less than 0.02wt%;
wherein the first polyester polyol has a functionality of 2, a hydroxyl number of 70mgKOH/g, a viscosity at 25℃of 1900 mPa.s and a moisture of less than 0.15wt%.
In one embodiment of the first aspect, the first polyether polyol is polyether polyol NL-8234 supplied by the chemical company of senkyuno;
the second polyether polyol is polyether polyol NJ-4110 provided by sentence rather chemical industry Co., ltd;
the third polyether polyol is a polyether polyol DL2000 supplied by eastern blue star eastern ltd;
the polyester polyol is polyester polyol POP-70 provided by Nanjing Jinling spandex chemical Co.
In one embodiment of the first aspect, the small molecule chain extender is dimethyl thiotoluene diamine and/or diethyl toluene diamine;
the foam stabilizer is B8545 and/or L6863;
the catalyst is an amine catalyst or an organic metal catalyst;
the viscosity-reducing flame retardant comprises tri (2-chloropropyl) phosphate and/or triethyl phosphate;
the chemical foaming agent is water.
In one embodiment of the first aspect, the catalyst is one or more of the following: PC-5, PC-8, PC-41 and T-12;
the water is deionized water.
In one embodiment of the first aspect, the isocyanate comprises a polyphenyl polymethylene polyisocyanate.
In one embodiment of the first aspect, the combined polyether polyol and the isocyanate have a mass ratio of 1 (1.0-1.1), preferably 1:1.0.
In a second aspect, the present application provides a method of making a high strength impact resistant polyurethane interior wall trim panel, the method comprising the steps of:
s1: forming a first polyurethane foam layer on the surface of the substrate to obtain a substrate containing the first polyurethane foam layer;
s2: forming a second polyurethane foam layer on the first polyurethane foam layer of the substrate containing the first polyurethane foam layer to obtain the high-strength impact-resistant polyurethane inner wall decorative plate;
wherein the first polyurethane foam layer is prepared by foaming the raw material composition of the high-strength impact-resistant polyurethane inner wall decorative plate according to the first aspect.
In one embodiment of the second aspect, the method comprises the steps of:
(1) Mixing the combined polyether polyol and isocyanate in a high-pressure foaming machine, spraying the mixture on a forward-travelling base material through a mixing head, and uniformly coating the base material with a hairbrush to form a first polyurethane foam layer with the thickness of 1-2 mm;
(2) And then mixing the conventional density decorative board combined polyether polyol with isocyanate in a high-pressure foaming machine, spraying the mixture on the first polyurethane foam layer which advances forwards through a mixing head, then entering a laminating machine for foaming, filling the surface layer space, and finishing foaming to obtain the high-strength impact-resistant polyurethane inner wall decorative board.
In one embodiment of the second aspect, the first polyurethane foam layer has a density of 150 to 250kg/m 3 。
In a third aspect, a high strength impact resistant polyurethane interior wall trim panel prepared by the method as described in the second aspect.
Compared with the prior art, the invention has the following positive effects:
(1) The combined polyether is an all-water high-density system, is used for decorative plates, can improve the impact strength of the decorative plates, prolongs the service life of the decorative plates in the use process, can reduce the density of conventional decorative plates, and can be controlled by 60-80 kg/m 3 Reduced to 50-60 kg/m 3 The cost on polyurethane foam does not increase.
(2) The typical decorative board substrate (bottom surface layer) is 5mm aluminum plate, can reduce aluminum plate's thickness to 3mm, reduces product cost, can improve decorative board impact strength simultaneously.
Detailed Description
Unless otherwise indicated, implied from the context, or common denominator in the art, all parts and percentages in the present application are based on weight and the test and characterization methods used are synchronized with the filing date of the present application. Where applicable, the disclosure of any patent, patent application, or publication referred to in this application is incorporated by reference in its entirety, and the equivalent of such patent is incorporated by reference, particularly as regards the definitions of synthetic techniques, product and process designs, polymers, comonomers, initiators or catalysts, etc. in the art, as disclosed in such documents. If the definition of a particular term disclosed in the prior art does not conform to any definition provided in this application, the definition of that term provided in this application controls.
Numerical ranges in this application are approximations, so that it may include the numerical values outside of the range unless otherwise indicated. The numerical range includes all values from the lower value to the upper value that increase by 1 unit, provided that there is a spacing of at least 2 units between any lower value and any higher value. For example, if a component, physical or other property (e.g., molecular weight, melt index, etc.) is recited as being 100 to 1000, it is intended that all individual values, e.g., 100, 101,102, etc., and all subranges, e.g., 100 to 166,155 to 170,198 to 200, etc., are explicitly recited. For ranges containing values less than 1 or containing fractions greater than 1 (e.g., 1.1,1.5, etc.), then 1 unit is suitably considered to be 0.0001,0.001,0.01, or 0.1. For a range containing units of less than 10 (e.g., 1 to 5), 1 unit is generally considered to be 0.1. These are merely specific examples of what is intended to be provided, and all possible combinations of numerical values between the lowest value and the highest value enumerated are to be considered to be expressly stated in this application. It should also be noted that the terms "first," "second," and the like herein do not limit the order of precedence, but are used merely to distinguish materials of different structures.
As used with respect to chemical compounds, the singular includes all isomeric forms and vice versa unless explicitly stated otherwise (e.g., "hexane" includes all isomers of hexane, either individually or collectively). In addition, unless explicitly stated otherwise, the use of the terms "a," "an," or "the" include plural referents.
The terms "comprises," "comprising," "including," and their derivatives do not exclude the presence of any other component, step or procedure, and are not related to whether or not such other component, step or procedure is disclosed in the present application. For the avoidance of any doubt, all use of the terms "comprising," "including," or "having" herein, unless expressly stated otherwise, may include any additional additive, adjuvant, or compound. Rather, the term "consisting essentially of … …" excludes any other component, step or process from the scope of any of the terms recited below, except as necessary for operability. The term "consisting of … …" does not include any components, steps or processes not specifically described or listed. The term "or" refers to the listed individual members or any combination thereof unless explicitly stated otherwise.
In a first aspect, the present application provides a high-strength impact-resistant polyurethane interior wall decorative panel raw material composition, comprising a combined polyether polyol and an isocyanate, characterized in that the combined polyether polyol comprises the following raw material components in parts by weight:
25-35 parts of a first polyether polyol;
50 to 60 parts of a second polyether polyol;
5 to 10 parts of a third polyether polyol;
10-15 parts of polyester polyol;
3-5 parts of small molecule chain extender;
2-3 parts of foam stabilizer;
2.5-5 parts of catalyst;
10-20 parts of flame-retardant viscosity reducer; and
0.2-0.5 part of chemical foaming agent;
wherein the total parts by weight of the polyether polyol and the polyester polyol is 100 parts by weight;
wherein the first polyether polyol has an average functionality of 6-7, a hydroxyl value of 410-440mgKOH/g, a viscosity of 28000-36000 mPa.s at 25 ℃, and a moisture of less than 0.10wt%;
wherein the second polyether polyol has a functionality of 4-4.5, a hydroxyl value of 54.5-57.5mgKOH/g, a viscosity at 25 ℃ of 2500-3500 mPa.s and a moisture of less than 0.10wt%;
wherein the third polyether polyol has a functionality of 2, a hydroxyl value of 245-275mgKOH/g, a viscosity of 270-370 mPa.s at 25 ℃, and a moisture of less than 0.02wt%;
wherein the first polyester polyol has a functionality of 2, a hydroxyl number of 70mgKOH/g, a viscosity at 25℃of 1900 mPa.s and a moisture of less than 0.15wt%.
In one embodiment, the combined polyether polyol may comprise 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 parts or a range or subrange between any two of these, with the total parts by weight of the polyether polyol and polyester polyol being 100 parts by weight.
In one embodiment, the combined polyether polyol may comprise, with the total parts by weight of the polyether polyol and polyester polyol being 100 parts by weight: 50. 51, 52, 53, 54, 55, 56, 57, 58, 59, 60 parts or a range or subrange between any two of the values thereof;
in one embodiment, the combined polyether polyol may comprise 5, 6, 7, 8, 9, 10 parts or a range or subrange between any two of the values of the third polyether polyol, with the total parts by weight of the polyether polyol and polyester polyol being 100 parts by weight.
In one embodiment, the combined polyether polyol may comprise 10, 11, 12, 13, 14, 15 parts or a range or subrange between any two of them, with the total parts by weight of the polyether polyol and polyester polyol being 100 parts by weight.
In one embodiment, the combined polyether polyol may comprise 3, 3.5, 4.0, 4.5, or 5 parts small molecule chain extender, with the total parts by weight of the polyether polyol and polyester polyol being 100 parts by weight; 2. 2.5 or 3 parts of foam stabilizer; 2.5, 3.0, 3.5, 4.0, 4.5 or 5 parts of catalyst; 10. 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20 parts of a flame retardant viscosity reducer; and 0.2, 0.3, 0.4 or 0.5 parts of a chemical blowing agent.
Polyether polyol
Polyether polyols are oligomers whose main chain contains ether linkages (-R-O-R-) and whose terminal or side groups contain more than 2 hydroxyl groups (-OH). The polyether polyol is prepared by ring-opening polymerization of low molecular weight polyol, polyamine or active hydrogen-containing compound serving as an initiator and alkylene oxide under the action of a catalyst. The alkylene oxides are mainly propylene oxide (propylene oxide) and ethylene oxide (ethylene oxide), of which propylene oxide is the most important. The polyalcohol initiator comprises dihydric alcohols such as propylene glycol and ethylene glycol, trihydric alcohols such as glycerol trimethylolpropane, and polyalcohols such as amyl alcohol, tetraol, xylitol, sorbitol and sucrose; the amine initiator is diethylamine, diethylenetriamine, etc.
In some embodiments, the viscosities of the polyether polyol and the polyester polyol may each independently be conventional in the art, such as dynamic viscosity. The dynamic viscosity is typically measured using a rotational viscometer.
In some embodiments, the first polyether polyol NL-8234 is provided by Severe chemical Co., ltd, has an average functionality of about 6-7, a hydroxyl number of 410-440mgKOH/g, a viscosity of 28000-36000 mPa.s at 25℃, and a moisture of less than 0.10wt%.
In some embodiments, the second polyether polyol NJ-4110 is provided by Severe chemical Co., ltd, has a functionality of 4 to 4.5, a hydroxyl number of 54.5 to 57.5mgKOH/g, a viscosity at 25℃of 2500 to 3500 mPa.s, and a moisture of less than 0.10% by weight.
In some embodiments, the third polyether polyol DL2000 is provided by Shandong Lanxing Dongda, inc., and has a functionality of about 2, a hydroxyl number of 245-275mgKOH/g, a viscosity at 25℃of 270-370 mPas, and a moisture of less than 0.02wt%.
In some embodiments, the polyester polyol POP-70 is provided by Nanjing Jinling Spanish chemical Co., ltd, has a functionality of 2, a hydroxyl number of 70mgKOH/g, a viscosity at 25℃ of 1900 mPa.s, and a moisture of less than 0.15wt%.
In one embodiment, the small molecule chain extender is dimethyl thiotoluene diamine DMTDA and/or diethyl toluene diamine DETDA.
In one embodiment, the foam stabilizer is B8545 and/or L6863.
In one embodiment, the catalyst is an amine catalyst or an organometallic catalyst.
In one embodiment, the viscosity reducing flame retardant is tris (2-chloropropyl) phosphate and/or triethyl phosphate.
In one embodiment, the chemical blowing agent is water, preferably the water is deionized water.
In one embodiment of the first aspect, the catalyst is one or more of the following: PC-5, PC-8, PC-41 and T-12.
In one embodiment of the first aspect, the isocyanate comprises a polyphenyl polymethylene polyisocyanate.
In one embodiment of the first aspect, the combined polyether polyol and the isocyanate have a mass ratio of 1 (1.0-1.1), preferably 1:1.0.
In a second aspect, the present application provides a method of making a high strength impact resistant polyurethane interior wall trim panel, the method comprising the steps of:
s1: forming a first polyurethane foam layer on the surface of the substrate to obtain a substrate containing the first polyurethane foam layer;
s2: forming a second polyurethane foam layer on the first polyurethane foam layer of the substrate containing the first polyurethane foam layer to obtain the high-strength impact-resistant polyurethane inner wall decorative plate;
wherein the first polyurethane foam layer is prepared by foaming the raw material composition of the high-strength impact-resistant polyurethane inner wall decorative plate according to the first aspect.
In one embodiment of the second aspect, the method comprises the steps of:
(1) Mixing the combined polyether polyol and isocyanate in a high-pressure foaming machine, spraying the mixture on a forward-travelling base material through a mixing head, and uniformly coating the base material with a hairbrush to form a first polyurethane foam layer with the thickness of 1-2 mm;
(2) And then mixing the conventional density decorative board combined polyether polyol with isocyanate in a high-pressure foaming machine, spraying the mixture on the first polyurethane foam layer which advances forwards through a mixing head, then entering a laminating machine for foaming, filling the surface layer space, and finishing foaming to obtain the high-strength impact-resistant polyurethane inner wall decorative board.
In one embodiment of the second aspect, the first polyurethane foam layer has a density of 150 to 250kg/m 3 。
In a third aspect, a high strength impact resistant polyurethane interior wall trim panel prepared by the method as described in the second aspect.
In one embodiment, the present application provides a method for preparing a high-strength impact-resistant polyurethane interior wall decorative panel, the method comprising the steps of: mixing the combined polyether polyol and isocyanate in a high-pressure foaming machine, spraying the mixture on a forward advancing bottom surface layer through a mixing head, and uniformly coating the liquid on the bottom surface layer by using a hairbrush to form a layer of high density (150-250 kg/m) of 1-2 mm 3 ) A polyurethane layer. The conventional density trim panel combination was then mixed with isocyanate in a high pressure foaming machine and sprayed onto the advancing substrate with a layer of high density polyurethane foam. And then the material enters a laminating machine for foaming, the surface layer space is filled, and the foaming is completed to obtain the decorative plate.
The above preferred conditions can be arbitrarily combined on the basis of not deviating from the common knowledge in the art, and thus, each preferred embodiment of the present invention can be obtained.
The reagents and materials used in the present invention are commercially available.
The percentages in the invention are the mass percentages of the components in the total amount of the raw materials.
Examples
The technical solutions of the present application will be clearly and completely described below in connection with the embodiments of the present application. The reagents and starting materials used were purchased commercially, unless otherwise indicated. The experimental methods, in which specific conditions are not noted in the following examples, were selected according to conventional methods and conditions, or according to the commercial specifications.
The sources of raw materials used in the following examples are as follows:
polyether polyol NJ-8243 available from Sedan Ningwu chemical Co.
The polyether polyol NJ-4110 is purchased from sentence-Ningwu chemical Co., ltd
Polyether polyol DL2000 was purchased from eastern blue star eastern ltd.
Polyester polyol PDP was purchased from nanjing jean spandex chemical company.
Silicone based foam stabilizer B-8545 was purchased from the winning industry group.
The isocyanatoether is polymeric MDI available from tabacco, model PM200.
Examples 1 to 3
The raw material compositions of the polyether combinations and the parts by weight of the components of the isocyanate ethers in examples 1 to 3 are shown in Table 1.
Table 1 raw material composition formulations for polyurethane interior wall decorative panels of examples 1-3.
(1) Preparation of a Combined polyether polyol
And uniformly mixing the other components except the isocyanic acid ether in a stainless steel mixing kettle for 45min, and uniformly stirring.
(2) Preparation of polyurethane foam
The combined polyether and the isocyanate are mixed in a foaming press at 25 ℃ according to a proportion, the mixture is sprayed on the surface of a 3mm aluminum plate advancing forwards through a mixing head, and the feed liquid is uniformly coated on the surface of the aluminum plate through a hairbrush to form a high-density polyurethane layer with the thickness of 1-2 mm. The conventional density trim panel combination was then mixed with isocyanate in a high pressure foaming machine and sprayed onto the advancing substrate with a layer of high density polyurethane foam. And then the material enters a laminating machine for foaming, the surface layer space is filled, and the foaming is completed to obtain the decorative plate.
The formula of the conventional density decorative board composite material is as follows:
30 parts by weight of YD-1050 (available from Hebei Adodon chemical Co., ltd.);
YD-8315 (available from Hebei Adam chemical Co., ltd.) 40 parts by weight
YD-8345 (available from Hebei Adam chemical Co., ltd.) 30 parts by weight
3 parts by weight of silicone oil B8525 (from Shanghai Maihao New Material technology Co., ltd.)
Water: 0.8 part by weight
PC-5:0.8 part by weight
PC-8:2.0 parts by weight
TMR-2:1.3 parts by weight
TCPP:25 parts by weight
245fa:10 parts by weight.
Effect examples
The polyurethane interior wall trim panels made in examples 1-3 were tested and the test results are shown in Table 2 below.
Table 2 performance parameters of the polyurethane interior wall trim panels of examples 1-3.
As can be seen from Table 2, the polyurethane foam obtained in the present invention has higher compressive strength and better low-temperature dimensional stability.
The criteria followed for performance testing in table 2 are as follows:
core density test standard: GB/T6343-1995
Low temperature dimensional stability test standard: GB8811-88
Compression strength test standard: GB8813-88.
The embodiments are described above in order to facilitate the understanding and application of the present application by those of ordinary skill in the art. It will be apparent to those skilled in the art that various modifications can be made to these embodiments and that the general principles described herein may be applied to other embodiments without the use of inventive faculty. Accordingly, the present application is not limited to the embodiments herein, and those skilled in the art, based on the present disclosure, may make improvements and modifications without departing from the scope and spirit of the present application.
Claims (5)
1. A method of making a high strength impact resistant polyurethane interior wall trim panel, the method comprising the steps of:
s1: forming a first polyurethane foam layer on the surface of the substrate to obtain a substrate containing the first polyurethane foam layer; the density of the first polyurethane foam layer is 150-250 kg/m 3 ；
S2: forming a second polyurethane foam layer on the first polyurethane foam layer of the substrate containing the first polyurethane foam layer to obtain the high-strength impact-resistant polyurethane inner wall decorative plate;
the first polyurethane foam layer is prepared by foaming a raw material composition of the high-strength impact-resistant polyurethane inner wall decorative plate; the raw material composition comprises a combined polyether polyol and isocyanate, wherein the combined polyether polyol comprises the following raw material components in parts by weight:
25-35 parts of a first polyether polyol;
50-60 parts of a second polyether polyol;
5-10 parts of a third polyether polyol;
10-15 parts of polyester polyol;
3-5 parts of small molecule chain extender;
2-3 parts of foam stabilizer;
2.5-5 parts of a catalyst;
10-20 parts of flame retardant viscosity reducer; and
0.2-0.5 part of chemical foaming agent;
wherein the total parts by weight of the polyether polyol and the polyester polyol is 100 parts by weight;
wherein the first polyether polyol is polyether polyol NL-8234 provided by chemical industry limited company of Gangning; the second polyether polyol is polyether polyol NJ-4110 provided by sentence rather chemical industry Co., ltd; the third polyether polyol is a polyether polyol DL2000 supplied by eastern blue star eastern ltd; the polyester polyol is polyester polyol POP-70 provided by Nanjing Jinling spandex chemical Co., ltd;
wherein the small molecule chain extender is dimethyl thiotoluene diamine and/or diethyl toluenediamine, and the chemical foaming agent is water;
wherein the isocyanate comprises polyphenyl polymethylene polyisocyanate, and the mass ratio of the combined polyether polyol and the isocyanate is 1:1.0.
2. The method of claim 1, wherein the foam stabilizer is B8545 and/or L6863;
the catalyst is an amine catalyst or an organic metal catalyst;
the flame-retardant viscosity reducer is tri (2-chloropropyl) phosphate and/or triethyl phosphate.
3. The method of claim 1, wherein the catalyst is one or more of the following: PC-5, PC-8, PC-41 and T-12;
the water is deionized water.
4. The method according to claim 1, characterized in that the method comprises the steps of:
(1) Mixing the combined polyether polyol and isocyanate in a high-pressure foaming machine, spraying the mixture on a forward-travelling base material through a mixing head, and uniformly coating the base material with feed liquid through a hairbrush to form a first polyurethane foam layer with the thickness of 1-2 mm;
(2) And then mixing the conventional density decorative board combined polyether polyol with isocyanate in a high-pressure foaming machine, spraying the mixture on the first polyurethane foam layer which advances forwards through a mixing head, then entering a laminating machine for foaming, filling the surface layer space, and finishing foaming to obtain the high-strength impact-resistant polyurethane inner wall decorative board.
5. A high strength impact resistant polyurethane interior wall trim panel made by the method of any one of claims 1-4.
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| CN110790884A (en) * | 2019-11-20 | 2020-02-14 | 上海东大聚氨酯有限公司 | Combined polyether for block foam, polyurethane raw material composition, polyurethane block foam and preparation method thereof |
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| CN1445068A (en) * | 2002-03-20 | 2003-10-01 | 美国拜尔公司 | Method for manufacturing three-D formed base material for noise reduction |
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