CN111269375B - Low-temperature-sensitive flatulence molding slow-resilience sponge and preparation method thereof - Google Patents
Low-temperature-sensitive flatulence molding slow-resilience sponge and preparation method thereof Download PDFInfo
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- CN111269375B CN111269375B CN202010255821.5A CN202010255821A CN111269375B CN 111269375 B CN111269375 B CN 111269375B CN 202010255821 A CN202010255821 A CN 202010255821A CN 111269375 B CN111269375 B CN 111269375B
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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
- C08G18/4804—Two or more polyethers of different physical or chemical nature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/143—Halogen containing compounds
- C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
- C08J9/145—Halogen containing compounds containing carbon, halogen and hydrogen only only chlorine as halogen atoms
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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
- C08G2101/00—Manufacture of cellular products
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
- C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
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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)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a low-temperature-sensitive flatulence molding slow-rebound sponge which comprises the following components in parts by weight: polyether polyol A: 65-90 parts; polyether polyol B: 10-35 parts; deionized water: 2-3 parts of a solvent; physical foaming agent: 0-10 parts; foam stabilizer: 0.2-0.45 part; amine catalyst: a10.1-0.3 parts; a330.4-0.6 parts; modified MDI: 30-45 parts. The invention discloses a low-temperature-sensitive flatulence molding slow-resilience sponge and a preparation method thereof, wherein the preparation density is 35-80Kg/m through regulation of a formula, the resilience time is 3-7 seconds, the hardness of the prepared sponge is unchanged under the environment of less than 0 ℃, and the property of the prepared sponge is kept the same as that of the sponge at normal temperature.
Description
Technical Field
The invention relates to the technical field of slow rebound sponge, in particular to low-temperature-sensitive inflation molding slow rebound sponge and a preparation method thereof.
Background
Slow rebound flatulence molded sponges, colloquially called "memory sponges", have found widespread applications, such as: pillows, seat backs, and the like. It has good comfort, rebound elasticity and air permeability.
At present, most of slow rebound flatulence molding sponges are sensitive to use temperature, and particularly become hard at low temperature (less than 0 ℃), so that the comfort level of the sponges is seriously influenced, and the due functions of 'memory sponges' cannot be exerted.
Disclosure of Invention
In order to solve the problems, the invention discloses a low-temperature-sensitive flatulence molding slow-resilience sponge and a preparation method thereof, the preparation density can be 35-80Kg/m through formula adjustment, the resilience time is 3-8 seconds, the hardness of the prepared sponge is unchanged under the environment of less than 0 ℃, and the sponge keeps the same properties as the sponge at normal temperature.
In order to achieve the above purpose, the invention provides the following technical scheme:
the low-temperature-sensitive flatulence molding slow-resilience sponge comprises the following components in parts by mass:
polyether polyol A: 65-90 parts;
polyether polyol B: 10-35 parts;
deionized water: 2-3 parts of a solvent;
physical foaming agent: 0-10 parts;
foam stabilizer: 0.2-0.45 part;
amine catalyst: a10.1-0.3 parts;
a330.4-0.6 parts;
modified MDI: 30-45 parts.
Wherein, the polyether polyol A has a hydroxyl value of 39-45 and a functionality of 3-4.5.
Further, the hydroxyl value of the polyether polyol B is 110-170, and the functionality is 2-3.5.
Further, the physical blowing agent is Methylene Chloride (MC).
Further, the foam stabilizer is DN 1168.
Further, the amine catalyst A1 is prepared by compounding 70% by weight of bis (dimethylaminoethyl) ether and 30% by weight of dipropylene glycol (DPG).
Further, the amine catalyst A33 is prepared by compounding 33% by mass of triethylene diamine and 67% by mass of dipropylene glycol.
Further, the modified MDI is 3133.
The invention also discloses a preparation method of the low-temperature-sensitive flatulence molding slow-rebound sponge, which comprises the following steps: and uniformly mixing the polyether polyol A and the polyether polyol B, and then sequentially adding deionized water, a foam stabilizer, a physical foaming agent and an amine catalyst and uniformly stirring. Then adding the modified MDI, stirring, pouring into a mould (mould temperature is 50 ℃), and demoulding after 5 minutes to obtain the finished product.
The invention has the following beneficial effects:
1. the preparation process is simple, more auxiliaries are not required to be added, and the cost is saved
2. The prepared sponge has wide density range (35-80 Kg/m) and wide application range.
3. The sponge does not harden in the environment below 0 deg.C, maintains the same characteristics as normal temperature, and is not limited by temperature during use.
4. The sponge has better comfort, rebound resilience and air permeability.
Detailed Description
The present invention will be further illustrated below with reference to specific embodiments, which are to be understood as merely illustrative and not limitative of the scope of the present invention.
Example one
The formulation for preparing the low temperature-sensitive flatulence molded slow-rebound sponge provided in this example is as follows: the mixture ratio is the mass portion ratio,
polyether polyol a (functionality 3, hydroxyl value 39): 65 parts of (1);
polyether polyol B (functionality 2, hydroxyl number 110): 35 parts of (B);
deionized water: 2 parts of (1);
physical blowing agent (dichloromethane): 0 part of (C);
foam stabilizer DN 1168: 0.3 part;
amine catalyst: a10.1 parts;
a330.4 parts;
modified MDI 3133: 33 parts of.
The amine catalyst A1 is prepared by compounding 70 mass percent of bis (dimethylaminoethyl) ether and 30 mass percent of dipropylene glycol (DPG). The amine catalyst A33 is prepared by compounding 33% of triethylene diamine and 67% of dipropylene glycol by mass.
According to the dosage in the formula, the polyether polyol A and the polyether polyol B are uniformly mixed, and then the deionized water, the foam stabilizer, the physical foaming agent and the amine catalyst in the formula are sequentially added and uniformly stirred. Then adding modified MDI3133 with the formula amount, stirring, pouring into a mould (mould temperature is 50 ℃), and demoulding after 5 minutes to obtain the finished product.
Experimental data:
two pieces of inflated slow recovery sponges of approximately the same density, labeled # 1 and # 2, were prepared according to the formulation described in example one and wrapped with cling film. The sponge No. 2 is placed in a freezing layer of a refrigerator (the temperature of the freezing layer is less than minus 10 ℃) and the sponge No. 1 is placed in a normal temperature (25 ℃). After one week, the sponge No. 2 was taken out and subjected to physical property examination together with the sponge No. 1. Wherein the sponge temperature is kept less than 0 ℃ in the 2# sponge detection process. The detection standard is used for detecting the physical properties according to the standard of GB/T24451-2009 slow rebound soft polyurethane plastics. The detection results are shown in table one.
Table one:
example two
The formulation for preparing the low temperature-sensitive flatulence molded slow-rebound sponge provided in this example is as follows: the mixture ratio is the mass portion ratio,
polyether polyol a (functionality 3.5, hydroxyl number 45): 90 parts of a mixture;
polyether polyol B (functionality 3, hydroxyl number 170): 10 parts of (A);
deionized water: 3 parts of a mixture;
physical blowing agent (dichloromethane): 0 part of (C);
foam stabilizer DN 1168: 0.2 part;
amine catalyst: a10.2 parts;
a330.5 parts;
modified MDI 3133: 37 parts of the raw materials.
The amine catalyst A1 is prepared by compounding 70 mass percent of bis (dimethylaminoethyl) ether and 30 mass percent of dipropylene glycol (DPG) and the amine catalyst A33 is prepared by compounding 33 mass percent of triethylene diamine and 67 mass percent of dipropylene glycol.
According to the dosage in the formula, the polyether polyol A and the polyether polyol B are uniformly mixed, and then the deionized water, the foam stabilizer, the physical foaming agent and the amine catalyst in the formula are sequentially added and uniformly stirred. Then adding modified MDI3133 with the formula amount, stirring, pouring into a mould (mould temperature is 50 ℃), and demoulding after 5 minutes to obtain the finished product.
Experimental data:
two pieces of inflated slow recovery sponges of approximately the same density, labeled # 3 and # 4, were prepared according to the formulation described in example two and wrapped with cling film. The sponge No. 4 is placed in a freezing layer of a refrigerator (the temperature of the freezing layer is less than minus 10 ℃), and the sponge No. 3 is placed in a normal temperature (25 ℃). After one week, the sponge No. 4 was taken out and subjected to physical property examination together with the sponge No. 3. Wherein the sponge temperature is kept less than 0 ℃ in the 2# sponge detection process. The detection standard is used for detecting the physical properties according to the standard of GB/T24451-2009 slow rebound soft polyurethane plastics. The results are shown in Table II.
Table two:
EXAMPLE III
The formulation for preparing the low temperature-sensitive flatulence molded slow-rebound sponge provided in this example is as follows: the mixture ratio is the mass portion ratio,
polyether polyol a (functionality 4, hydroxyl value 42): 80 parts of a mixture;
polyether polyol B (functionality 3.5, hydroxyl number 145): 20 parts of (1);
deionized water: 3 parts of a mixture;
physical blowing agent (dichloromethane): 10 parts of (A);
foam stabilizer DN 1168: 0.4 part;
amine catalyst: a10.3 parts;
a330.6 parts;
modified MDI 3133: 45 parts of the raw materials.
The amine catalyst A1 is prepared by compounding 70 mass percent of bis (dimethylaminoethyl) ether and 30 mass percent of dipropylene glycol (DPG) and the amine catalyst A33 is prepared by compounding 33 mass percent of triethylene diamine and 67 mass percent of dipropylene glycol.
According to the dosage in the formula, the polyether polyol A and the polyether polyol B are uniformly mixed, and then the deionized water, the foam stabilizer, the physical foaming agent and the amine catalyst in the formula are sequentially added and uniformly stirred. Then adding modified MDI3133 with the formula amount, stirring, pouring into a mould (mould temperature is 50 ℃), and demoulding after 5 minutes to obtain the finished product.
Experimental data:
two pieces of inflated slow recovery sponges of approximately the same density, labeled # 5 and # 6, were prepared according to the recipe described in example three and wrapped with cling film. The No. 6 sponge is placed in a freezing layer of a refrigerator (the temperature of the freezing layer is less than minus 10 ℃) and the No. 5 sponge is placed in a normal temperature (25 ℃) environment. After one week, the sponge No. 6 was taken out and subjected to physical property examination together with the sponge No. 5. Wherein the sponge temperature is kept less than 0 ℃ in the 2# sponge detection process. The detection standard is used for detecting the physical properties according to the standard of GB/T24451-2009 slow rebound soft polyurethane plastics. The results are shown in Table III.
Table three:
example four
The formulation for preparing the low temperature-sensitive flatulence molded slow-rebound sponge provided in this example is as follows: the mixture ratio is the mass portion ratio,
polyether polyol a (functionality 3, hydroxyl value 40): 70 parts of (B);
polyether polyol B (functionality 2.5, hydroxyl number 120): 30 parts of (1);
deionized water: 2 parts of (1);
physical blowing agent (dichloromethane): 5 parts of a mixture;
foam stabilizer DN 1168: 0.35 part;
amine catalyst: a10.2 parts;
a330.5 parts;
modified MDI 3133: 30 parts of.
The amine catalyst A1 is prepared by compounding 70 mass percent of bis (dimethylaminoethyl) ether and 30 mass percent of dipropylene glycol (DPG) and the amine catalyst A33 is prepared by compounding 33 mass percent of triethylene diamine and 67 mass percent of dipropylene glycol.
According to the dosage in the formula, the polyether polyol A and the polyether polyol B are uniformly mixed, and then the deionized water, the foam stabilizer, the physical foaming agent and the amine catalyst in the formula are sequentially added and uniformly stirred. Then adding modified MDI3133 with the formula amount, stirring, pouring into a mould (mould temperature is 50 ℃), and demoulding after 5 minutes to obtain the finished product.
Experimental data:
two pieces of inflated slow recovery sponges of approximately the same density, designated 7# and 8# respectively, were prepared according to the formulation described in example four and wrapped with cling film. The sponge No. 8 is placed in a freezing layer of a refrigerator (the temperature of the freezing layer is less than minus 10 ℃) and the sponge No. 7 is placed in a normal temperature (25 ℃). After one week, the 8# sponge was taken out and subjected to physical property examination together with the 7# sponge. Wherein the sponge temperature is kept less than 0 ℃ in the 8# sponge detection process. The detection standard is used for detecting the physical properties according to the standard of GB/T24451-2009 slow rebound soft polyurethane plastics. The results are shown in Table four.
Table four:
the sponge prepared in the embodiment is basically similar to each index through the physical property detection at normal temperature and low temperature, and the using process of the sponge is not influenced by the temperature. The unmodified sponge of the prior art, which hardens at low temperatures, has no rebound effect and is therefore not required as a comparative example.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (3)
1. A low-temperature-sensitive flatulence molding slow-rebound sponge is characterized in that: the composition comprises the following components in parts by mass:
polyether polyol A: 65-90 parts;
polyether polyol B: 10-35 parts;
deionized water: 2-3 parts of a solvent;
physical foaming agent: 0-10 parts;
foam stabilizer: 0.2-0.45 part;
amine catalyst: a10.1-0.3 parts;
a330.4-0.6 parts;
modified MDI: 30-45 parts of a solvent;
the hydroxyl value of the polyether polyol A is 39-45, and the functionality is 3-4.5;
the hydroxyl value of the polyether polyol B is 110-170, and the functionality is 2-3.5;
the foam stabilizer is DN 1168;
the modified MDI is 3133;
the preparation method of the low-temperature-sensitive flatulence molding slow-rebound sponge comprises the following steps: uniformly mixing polyether polyol A and polyether polyol B, and then sequentially adding deionized water, a foam stabilizer, a physical foaming agent and an amine catalyst and uniformly stirring; then adding modified MDI, stirring, pouring into a mould, heating the mould to 50 ℃, demoulding after 5 minutes to obtain the finished product.
2. The low temperature-sensitive flatulence molded slow recovery sponge according to claim 1, wherein: the physical foaming agent is dichloromethane.
3. The low temperature-sensitive flatulence molded slow recovery sponge according to claim 1, wherein: the amine catalyst A1 is prepared by compounding 70 mass percent of bis (dimethylaminoethyl) ether and 30 mass percent of dipropylene glycol, and the amine catalyst A33 is prepared by compounding 33 mass percent of triethylene diamine and 67 mass percent of dipropylene glycol.
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| CN113999363B (en) * | 2021-11-30 | 2022-10-21 | 江苏钟山新材料有限公司 | Preparation method of high-bearing low-temperature insensitive slow-rebound sponge |
| CN115232287B (en) * | 2022-08-08 | 2023-07-14 | 南京金栖化工集团有限公司 | Flame-retardant slow-rebound polyurethane sponge and preparation method thereof |
| CN115353602A (en) * | 2022-09-06 | 2022-11-18 | 山东尚正新材料科技股份有限公司 | Polyurethane cleaning sponge and preparation method thereof |
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| CN105418889A (en) * | 2015-12-16 | 2016-03-23 | 芜湖馨源海绵有限公司 | Memory sponge with high supporting force |
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| CN107698728A (en) * | 2017-09-12 | 2018-02-16 | 周志坚 | A kind of slow-recovery sponge and preparation method thereof |
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| DE212011100115U1 (en) * | 2011-02-11 | 2013-02-08 | Jiangsu Healthcare Co., Ltd | For the level foaming process suitable MDI-containing temperature-insensitive memory foam |
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| CN110527059A (en) * | 2019-07-31 | 2019-12-03 | 成都世友海绵制品有限公司 | A kind of low temperature perception memory foam and preparation method based on air and structural support |
| CN110628009A (en) * | 2019-09-25 | 2019-12-31 | 山东一诺威新材料有限公司 | Polyether polyol for self-opening low-temperature soft slow-rebound mattress foam and preparation method thereof, and slow-rebound foam and preparation method thereof |
| CN110922558A (en) * | 2019-12-07 | 2020-03-27 | 泉州玺堡家居科技有限公司 | Slow-resilience polyurethane expanded foam and preparation method thereof |
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| CN102153722A (en) * | 2011-02-25 | 2011-08-17 | 北京万博汇佳科贸有限公司 | Slow-resilience polyether polyol and method for manufacturing slow-resilience soft foam therewith |
| CN105418889A (en) * | 2015-12-16 | 2016-03-23 | 芜湖馨源海绵有限公司 | Memory sponge with high supporting force |
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| CN107698728A (en) * | 2017-09-12 | 2018-02-16 | 周志坚 | A kind of slow-recovery sponge and preparation method thereof |
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