CN112646113B - High-resilience and pressure-resistant sofa filler and sofa thereof - Google Patents
High-resilience and pressure-resistant sofa filler and sofa thereof Download PDFInfo
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- CN112646113B CN112646113B CN202011497255.5A CN202011497255A CN112646113B CN 112646113 B CN112646113 B CN 112646113B CN 202011497255 A CN202011497255 A CN 202011497255A CN 112646113 B CN112646113 B CN 112646113B
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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
- C08G18/28—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
- C08G18/6688—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 C08G18/3271
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C17/00—Sofas; Couches; Beds
-
- 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
- C08G18/28—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
- C08G18/3271—Hydroxyamines
- C08G18/3275—Hydroxyamines containing two hydroxy groups
-
- 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
- C08G18/28—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
- C08G18/3271—Hydroxyamines
- C08G18/3278—Hydroxyamines containing at least three hydroxy groups
- C08G18/3281—Hydroxyamines containing at least three hydroxy groups containing three hydroxy groups
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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
- C08G18/28—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
- C08G18/4072—Mixtures of compounds of group C08G18/63 with other macromolecular compounds
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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
- C08G18/28—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
-
- 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
- C08G18/28—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
- C08G18/61—Polysiloxanes
-
- 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
- C08G18/28—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
- C08G18/63—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
- C08G18/632—Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers onto polyethers
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Nursing (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to the field of sofa manufacturing, in particular to a sofa filler with high resilience and collapse resistance and a sofa thereof. The high-resilience and collapse-resistant sofa filler is made of polyurethane sponge. The sofa filler is subjected to raw material and process limitation to obtain the polyurethane sponge with excellent mechanical properties and uniform pore bubbles, and the prepared sofa has excellent elasticity and comfort, and the formaldehyde content meets the industrial standard, is green and environment-friendly, and has wide application prospect.
Description
Technical Field
The invention relates to the field of sofa manufacturing, in particular to a sofa filler with high resilience and collapse resistance and a sofa thereof.
Background
Sofas have taken an increasingly important share in the furniture market as an integral part of home life. Along with the improvement of living standard and health consciousness of people, the requirement on the comfort level of the sofa is higher and higher. The sofa filler is used as the main component of the sofa, and directly influences the use experience of the sofa.
Polyurethane sponge has the advantages of low density, small compression set and the like, and is widely applied to the living fields of automobiles, shoe materials, furniture, clothes and the like. The existing polyurethane sponge generally cannot give consideration to both hardness and elasticity, an auxiliary agent needs to be added to enable the resilience rate of polyurethane to be improved under the condition of sufficient hardness, but the added auxiliary agent causes the problem of compatibility in a system, so that the defects of irregular cells, foam collapse, cracking and the like of a polyurethane material are caused, and the application of the polyurethane sponge in production and life is limited. Meanwhile, the polyurethane product has the problem of poor weather resistance, and the problems of yellowing, brittleness and reduced mechanical properties can be caused when the polyurethane product is placed for a long time or under the action of light and heat, so that the application of the polyurethane in furniture products for long-term use, particularly the field of sofas is limited, and the comfortable experience degree of the sofas is reduced.
Therefore, the preparation of the sofa with high resilience and collapse resistance is an urgent problem to be solved in the field.
Disclosure of Invention
The invention provides a sofa filler with high resilience and collapse resistance and a sofa thereof. The sofa prepared by the method has excellent elasticity and comfort, the formaldehyde content meets the industrial standard, and the sofa is green and environment-friendly and has wide application prospect.
The invention provides a high-resilience and collapse-resistant sofa filler, which is made of polyurethane sponge.
In a preferred embodiment, the polyurethane sponge comprises the following raw materials: according to parts by weight, 35-62 parts of butter PPG, 14-30 parts of isocyanate, 4-9 parts of polysiloxane, 2-7 parts of alcohol auxiliary agent, 0.5-3 parts of organic tin catalyst, 2-8 parts of solvent and 3-6 parts of water.
In a preferred embodiment, the raw material of the polyurethane sponge further comprises 17-24 parts of POP (polymer polyol).
In a preferred embodiment, the weight ratio of the butter PPG and POP is (2-3): 1.
in a preferred embodiment, the polysiloxane is an amino-modified polysiloxane.
In a preferred embodiment, the kinematic viscosity of the amino-modified polysiloxane is from 1000 to 3500mm 2 /s(25℃)。
In a preferred embodiment, the alcoholic auxiliary is N-methyldiethanolamine or N-tert-butyldiethanolamine.
In a preferred embodiment, the weight ratio of N-methyldiethanolamine to N-tertiary-butyldiethanolamine is (2-4.6): 1.
in a preferred embodiment, the organotin catalyst is dibutyltin dilaurate.
In a second aspect, the present invention provides a sofa comprising the high resilience, collapse resistant sofa filler described above.
Has the beneficial effects that:
the invention provides a sofa filler with high resilience and collapse resistance and a sofa thereof. The sofa filler is subjected to raw material and process limitation to obtain the polyurethane sponge with excellent mechanical property and uniform pore foam, and the prepared sofa has excellent elasticity and comfort, the formaldehyde content meets the industrial standard, and the sofa is green and environment-friendly and has wide application prospect.
Detailed Description
The invention will be further understood by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. To the extent that a definition of a particular term disclosed in the prior art is inconsistent with any definition provided herein, the definition of the term provided herein controls.
As used herein, a feature that does not define a singular or plural form is also intended to include a plural form of the feature unless the context clearly indicates otherwise. It will also be understood that the term "prepared from …" as used herein is synonymous with "comprising," including, "comprising," "has," "contains," and/or "contains," when used in this specification means the recited composition, step, method, article, or apparatus, but does not preclude the presence or addition of one or more other compositions, steps, methods, articles, or apparatuses. Furthermore, the use of "preferred," "preferably," "more preferred," and the like, when describing embodiments of the present application, is intended to refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. In addition, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention. In addition, the starting materials for the present invention are commercially available unless otherwise specified.
In order to solve the above problems, the present invention provides, in a first aspect, a high resilience, collapse-resistant sofa filler. The sofa filler is made of polyurethane sponge.
In some preferred embodiments, the polyurethane sponge comprises the following raw materials: according to parts by weight, 35-62 parts of butter PPG, 14-30 parts of isocyanate, 4-9 parts of polysiloxane, 2-7 parts of alcohol auxiliary agent, 0.5-3 parts of organic tin catalyst, 2-8 parts of solvent and 3-6 parts of water.
The butter PPG may be commercially available, for example from cibon polymer technologies ltd, guangzhou.
In some preferred embodiments, the raw material of the polyurethane sponge further comprises 17-24 parts of POP (polymer polyol). The POP may be commercially available, such as Guangzhou HongyO commerce, inc.
The invention discovers that when 17-24 parts of POP is added, the resilience performance of the prepared polyurethane sponge is improved. The supposition is that the polymer-polyether dispersion is introduced into the system by adding the POP, the strength of the outer surface layer of the sponge foam formed by foaming and curing reaction with the isocyanate is improved, the load bearing capacity of the formed polyurethane sponge is enhanced, and the prepared sofa filler has high resilience performance under the low-density condition.
Further preferably, the weight ratio of the butter PPG to POP is (2-3): 1. the applicant found that the weight ratio of butter PPG and POP was (2-3): 1, the rebound rate of the polyurethane sponge can reach more than 50 percent. The reason may be that the flow resistance of the PPG and POP is small, the aging is sufficient in the later period of the reaction, and the prepared sofa filler can keep higher resilience when being pressed.
The polyurethane has the advantages of wear resistance, tear resistance and the like, but also has the defects of poor surface flexibility and weather resistance. Preferably, 4-9 parts of polysiloxane is added to effectively improve the aging resistance of the prepared polyurethane sponge. The bonding energy of Si-O bond is higher than that of C-C bond, and polysiloxane is combined with isocyanate and polyether polyol in a crosslinking way to form an organosilicon-polyurethane segmented copolymer, so that the macroscopic mechanical property of the polyurethane sponge is improved. However, the combination of the siloxane chain with the polyurethane backbone rather limits its ability to migrate to the surface of the material, and provides limited flexibility enhancement to the surface of the sponge. Further preferably, when the amino-modified polysiloxane is selected, the flexibility of the polyurethane sponge surface is significantly improved. The reason may be that introduction of amino groups into the side chains of the polysiloxane increases the silicon atom content of the polymerThe surface migration capability effectively improves the surface performance of the polyurethane sponge, and endows the polyurethane sponge with good appearance and hand feeling experience. More preferably, the amino-modified polysiloxane has a kinematic viscosity of 1000 to 3500mm 2 At 25 ℃ for a period of time. Kinematic viscosity of 1000-3500mm 2 The amino-modified polysiloxane/s (25 ℃ C.) is commercially available, for example, from Engineers Inc. of Dongguan city.
In some preferred embodiments, the isocyanate is MDI.
In some preferred embodiments, the alcoholic adjuvant is N-methyldiethanolamine and N-tertiary-butyldiethanolamine. The CAS number for N-methyldiethanolamine is 105-59-9,N-tert-butyldiethanolamine is 2160-93-2.
The amino modified polysiloxane improves the ageing resistance of the polyurethane sponge, but the reaction of the amino modified polysiloxane and isocyanate is not easy to control, and the produced polyurethane sponge is easy to have the defects of collapse, shrinkage, cracking and the like. The invention discovers that when the alcohol auxiliary agent selects N-methyldiethanolamine and N-tertiary butyl diethanolamine, the prepared polyurethane sponge has uniform foam pores and no cracks, the N-methyldiethanolamine and the N-tertiary butyl diethanolamine are supposed to be added to promote the dispersibility of amino modified polysiloxane, so that the phenomena of unequal oil particle size and serious phase separation are inhibited, the amino modified polysiloxane and polyurethane form a stable interwoven network structure under the participation of the N-methyldiethanolamine and the N-tertiary butyl diethanolamine, and the defects of collapse, shrinkage, cracking and the like of sofa fillers are inhibited.
Further preferably, the weight ratio of N-methyldiethanolamine to N-tertiary-butyldiethanolamine is (2-4.6): 1. the invention discovers that when the weight ratio of the N-methyldiethanolamine to the N-tertiary butyl diethanolamine is (2-4.6): 1, the prepared polyurethane sponge has uniform foam holes, no cracks and high sensory evaluation, and the rebound rate can reach over 50 percent. The alcohol auxiliary agent under the condition is supposed to increase the stable cross-linking point density of the polyurethane network structure, and has the best compatibility with substances such as butter PPG, POP, amino modified polysiloxane and the like, thereby inhibiting the unstable entanglement among polymer molecular chains and improving the deformation resistance of the polyurethane sponge.
In some preferred embodiments, the organotin catalyst is dibutyltin dilaurate. Dibutyltin dilaurate has a CAS number of 77-58-7.
In the synthesis process of polyurethane, a catalyst is needed to accelerate the reaction between-OH and-NCO, but the catalyst cannot give consideration to the dynamic equilibrium process of foaming reaction and gel reaction in a system. The invention finds that when the catalyst is selected from an organic tin catalyst, particularly dibutyltin dilaurate, the prepared polyurethane can keep the resilience force improved and improve the tensile strength at the same time. Presumably, the synergistic effect of dibutyltin dilaurate and alcohol auxiliaries promotes the highest-speed and stable reaction process of the PPG and POP of the butter and the isocyanate, the intermolecular force of a polyurethane network structure formed by crosslinking combination is stronger, and the tensile strength of the polyurethane sponge is improved. Further preferably, the weight ratio of the dibutyltin dilaurate to the alcohol auxiliary agent is 1: (4-6), the tensile strength of the prepared polyurethane sponge after dry heat aging can reach over 58kPa, and the sensory evaluation is high.
In some preferred embodiments, the solvent is dichloromethane.
In some preferred embodiments, the step of preparing the sofa filler comprises:
mixing the butter PPG and POP according to the formula amount, vacuum dehydrating for 0.5-1h, adding isocyanate, heating to 75-83 deg.C, stirring at 50-100r/min for 2.5-5h; adding polysiloxane, alcohol auxiliary agent, organic tin catalyst, solvent and water, stirring at the speed of 500-1500r/min for 6-8h, curing and foaming to obtain a polyurethane sponge finished product; and (5) shaping to obtain the sofa filler.
In a second aspect, the present invention provides a sofa comprising the high resilience, collapse resistant sofa filler described above.
Examples
Example 1.
The embodiment provides a sofa filler with high resilience and collapse resistance, and the material of the sofa filler is polyurethane sponge.
The polyurethane sponge comprises the following raw materials: according to parts by weight, 56 parts of butter PPG, 24 parts of isocyanate, 6 parts of polysiloxane, 4 parts of alcohol auxiliary agent, 1 part of organic tin catalyst, 5 parts of solvent and 3 parts of water.
The raw material of the polyurethane sponge also comprises 18 parts of POP (polymer polyol).
The butter PPG was purchased from Cubang high molecular materials science and technology Co., ltd.
The POP is purchased from HongyO trade company, guangzhou, inc., and has the model number of POP-36/28.
The polysiloxane is amino modified polysiloxane, and the kinematic viscosity of the amino modified polysiloxane is 1500mm 2 (25 ℃ C.), purchased from Engineered Inc. of Dongguan city.
The isocyanate was MDI, purchased from Guangzhou Chengtian chemical Co.
The alcohol auxiliary agent is N-methyldiethanolamine and N-tertiary butyl diethanolamine, and the weight ratio of the N-methyldiethanolamine to the N-tertiary butyl diethanolamine is 3:1. n-methyldiethanolamine has a CAS number of 105-59-9,N-tert-butyldiethanolamine a CAS number of 2160-93-2.
The organic tin catalyst is dibutyltin dilaurate, and the CAS number is 77-58-7.
The solvent is dichloromethane and the CAS number is 75-09-2.
The step of preparing the sofa filler comprises:
mixing the PPG and POP according to the formula amount, carrying out vacuum dehydration for 0.5h, adding isocyanate, heating to 80 ℃, and stirring at the speed of 60r/min for 3h; adding polysiloxane, alcohol auxiliary agent, organic tin catalyst, solvent and water, stirring at the speed of 1000r/min for 6 hours, curing and foaming to obtain a polyurethane sponge finished product; and (5) shaping to obtain the sofa filler.
Example 2.
The specific implementation mode of the sofa filler with high resilience and collapse resistance is the same as that of the example 1. Except that no POP was added.
Example 3.
The specific implementation mode of the sofa filler with high resilience and collapse resistance is the same as that of the example 1. The difference is that the weight part of POP is 8 parts.
Example 4.
The specific implementation mode of the sofa filler with high resilience and collapse resistance is the same as that of the example 1. The difference is that amino modified polysiloxane is replaced by hydroxyl modified polysiloxane, the kinematic viscosity is 20mPa.s (25 ℃), and the polysiloxane is purchased from Jinan energy-gathering chemical company Limited.
Example 5.
The specific implementation mode of the sofa filler with high resilience and collapse resistance is the same as that of the example 1. With the difference that the kinematic viscosity of the amino-modified polysiloxane was 5700mm 2 (25 ℃ C.), purchased from Union chemical Co., ltd, aster Dongpo.
Example 6.
The specific implementation mode of the sofa filler with high resilience and collapse resistance is the same as that of the example 1. The difference is that the alcohol auxiliary agent is triethanolamine and the CAS number is 102-71-6.
Example 7.
The specific implementation mode of the sofa filler with high resilience and collapse resistance is the same as that of the example 1. The difference is that the weight ratio of N-methyldiethanolamine to N-tertiary butyl diethanolamine is 1:1.
example 8.
The specific implementation mode of the sofa filler with high resilience and collapse resistance is the same as that of the example 1. The difference is that the organic tin catalyst is stannous octoate, and the CAS number is 301-10-0.
Example 9.
The specific implementation mode of the sofa filler with high resilience and collapse resistance is the same as that of the example 1. The difference is that the weight portion of the alcohol auxiliary agent is 3 portions.
Performance test method
The rebound resilience:
the rebound rate of the prepared sofa filler is determined by referring to GB/T6670-2008.
Tensile strength after dry heat aging:
the samples were subjected to a dry heat ageing test at 140 ℃ for 16h, as specified in GB/T9640-1988. And the tensile strength of the test sample is tested according to the specification of GB/T6344-1996, the test speed is 500 +/-50 mm/min, the thickness of the test sample is 10mm, the effective gauge length is 50mm, and each test sample is tested for 5 times by taking a parallel sample.
Sensory evaluation:
the color, air holes, cracks and smell of the prepared sofa filler are comprehensively graded by a 10-person group through sensory tests, and the evaluation grade is from 0 (poor performance) to 10 (excellent performance).
Performance test data
TABLE 1 results of the Performance test of examples 1 to 9
Finally, it is pointed out that the foregoing examples are illustrative only, serving to explain some of the characteristics of the process according to the invention. The appended claims are intended to claim as broad a scope as can be conceived and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.
Claims (2)
1. The sofa filler with high resilience and collapse resistance is characterized in that the material of the sofa filler is polyurethane sponge;
the polyurethane sponge comprises the following raw materials: according to parts by weight, 35-62 parts of butter PPG, 14-30 parts of isocyanate, 4-9 parts of polysiloxane, 4-7 parts of alcohol auxiliary agent, 0.5-3 parts of organic tin catalyst, 2-8 parts of solvent, 3-6 parts of water and 17-24 parts of POP;
the polysiloxane is amino modified polysiloxane, and the kinematic viscosity of the amino modified polysiloxane is 1000-3500mm 2 /s；
The organic tin catalyst is dibutyltin dilaurate;
the weight ratio of the dibutyltin dilaurate to the alcohol auxiliary agent is 1: (4-6);
the weight ratio of the butter PPG to the POP is (2-3): 1;
the alcohol auxiliary agent is N-methyldiethanolamine and N-tertiary butyl diethanolamine;
the weight ratio of the N-methyldiethanolamine to the N-tertiary-butyldiethanolamine is (2-4.6): 1.
2. a sofa having the high resilience, collapse resistant sofa filler of claim 1.
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| CN202011497255.5A CN112646113B (en) | 2020-12-17 | 2020-12-17 | High-resilience and pressure-resistant sofa filler and sofa thereof |
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| CN202011497255.5A CN112646113B (en) | 2020-12-17 | 2020-12-17 | High-resilience and pressure-resistant sofa filler and sofa thereof |
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| CN112646113B true CN112646113B (en) | 2022-11-04 |
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| CN106279624A (en) * | 2015-06-12 | 2017-01-04 | 张家港市杨舍丝印工艺厂 | A kind of preparation method of polyurethane |
| CN106957408A (en) * | 2017-04-11 | 2017-07-18 | 东莞恒生高分子科技有限公司 | A kind of polyurethane sponge and its processing method |
| CN108359074A (en) * | 2018-02-26 | 2018-08-03 | 武汉纺织大学 | A kind of environment-protecting and high elasticity anti-yellowing polyurethane sponge and preparation method thereof |
| CN109593348A (en) * | 2018-11-30 | 2019-04-09 | 浙江王家风范海绵制品有限公司 | High recovery sponge of a kind of 30 density and preparation method thereof |
| CN110760049A (en) * | 2019-11-28 | 2020-02-07 | 广汉市新鸿海绵有限公司 | High-performance clean sponge |
| CN111117213B (en) * | 2019-12-31 | 2022-03-11 | 合肥科天水性科技有限责任公司 | Super-hydrophobic light polyurethane micro-nanofiber sponge and preparation method and application thereof |
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