CN112321789A - Low-density memory sponge capable of being compressed in vacuum and preparation method thereof - Google Patents
Low-density memory sponge capable of being compressed in vacuum and preparation method thereof Download PDFInfo
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- CN112321789A CN112321789A CN202011320064.1A CN202011320064A CN112321789A CN 112321789 A CN112321789 A CN 112321789A CN 202011320064 A CN202011320064 A CN 202011320064A CN 112321789 A CN112321789 A CN 112321789A
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- polyether polyol
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- memory sponge
- vacuum
- polyol
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 229920005862 polyol Polymers 0.000 claims abstract description 90
- 150000003077 polyols Chemical class 0.000 claims abstract description 90
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 76
- 229920000570 polyether Polymers 0.000 claims abstract description 76
- 229920000642 polymer Polymers 0.000 claims abstract description 19
- 239000004088 foaming agent Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 239000012948 isocyanate Substances 0.000 claims abstract description 10
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 229920002545 silicone oil Polymers 0.000 claims abstract description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 12
- 239000006260 foam Substances 0.000 claims description 7
- 238000009849 vacuum degassing Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000002045 lasting effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000012974 tin catalyst Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000003786 synthesis reaction Methods 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 6
- 150000001412 amines Chemical class 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- C08J9/06—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 chemical blowing agent
- C08J9/08—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 chemical blowing agent developing carbon dioxide
-
- 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
-
- 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
- C08G2280/00—Compositions for creating shape memory
-
- 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
- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/052—Closed cells, i.e. more than 50% of the pores are closed
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
Landscapes
- 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)
- General Chemical & Material Sciences (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a low-density vacuum compressible memory sponge and a preparation method thereof, wherein the low-density vacuum compressible memory sponge comprises the following components in parts by weight: high-EO polyether polyol a: 1-80 parts of polyether polyol B: 1-20 parts of polyether polyol C: 1-10 parts of polymer polyol D: 0.1-50 parts of catalyst: 0.1-0.7 part of special composite silicone oil: 0.5-3 parts of foaming agent: 1-8 parts of isocyanate: 40-80 parts. Compared with the traditional mattress, the invention improves the main raw materials and the process for synthesis, improves the closed pore shrinkage performance of the sponge, improves the mechanical property and the durability of the sponge, and can well solve the problems of odor and VOC in the application process of the field of furniture of the sponge mattress. Meanwhile, in the synthesis process, the density of the slow rebound sponge is reduced to 25kg/m3 at least by controlling the formula process, and certain compression strength and support property can be maintained, so that the harsh condition that the finished sponge product can be compressed in vacuum is met.
Description
Technical Field
The invention relates to a sponge material, in particular to a low-density vacuum compressible memory sponge and a preparation method thereof.
Background
Polyurethane soft foam sponges are quite common in the field of furniture, particularly pillows, mattresses, sofas and the like. With the market competition increasing, the demand of customers for low-density vacuum-compressible memory sponges increases. However, it is known that the density of the common memory sponge cannot be too low, otherwise the bearing performance is poor and the memory sponge has no support; meanwhile, the sponge has poor durability, and after the sponge is used for a period of time, a local collapse phenomenon can occur, so that the use of consumers can be seriously influenced, and meanwhile, the sponge generates uncomfortable feeling.
In order to solve the above problems, we have made a series of improvements.
Disclosure of Invention
The invention aims to provide a low-density vacuum compressible memory sponge and a preparation method thereof, so as to overcome the defects of the prior art.
A low-density vacuum compressible memory sponge comprises the following components in parts by weight: high-EO polyether polyol a: 1-80 parts of polyether polyol B: 1-20 parts of polyether polyol C: 1-10 parts of polymer polyol D: 0.1-50 parts of catalyst: 0.1-0.7 part of special composite silicone oil: 0.5-3 parts of foaming agent: 1-8 parts of isocyanate: 40-80 parts.
Further, the formula comprises the following components in parts by weight: high-EO polyether polyol a: 80 parts of polyether polyol B: 5 parts of polyether polyol C: 5 parts, polymer polyol D: 10 parts, catalyst: 0.7 part of special composite silicone oil: 3 parts of foaming agent: 5 parts of isocyanate: 60 parts.
Further, the high EO polyether polyol A is a polyether polyol having a hydroxyl value of 32 mgKOH/g.
Further, the polyether polyol B is polyether polyol with the difunctional and hydroxyl value of 56mgKOH/g, and the polyether polyol B is grafted by an EO/PO block.
Further, the polyether polyol C is a polyether polyol with three functionality and a hydroxyl value of 56mgKOH/g, and the polyether polyol C is grafted by an EO/PO block.
Further, the polymer polyol D was a trifunctional polymer polyol having a hydroxyl value of 28 mgKOH/g.
Further, the catalyst is a tin catalyst.
Further, the foaming agent is water and a physical foaming agent.
Further, the isocyanate is special modified MDI.
A preparation method of a low-density vacuum compressible memory sponge comprises the following steps:
(1) preparation of raw materials: preparing the raw materials according to a formula;
(2) vacuum degassing treatment: vacuum degassing high-EO polyether polyol A, polyether polyol B, polyether polyol C and polymer polyol D under the condition that the vacuum degree is 0.07-0.08Mpa, controlling the temperature at 30 ℃ and lasting for 2 hours;
(3) mixing: premixing polyether polyol B and polyether polyol C, adding the premixed polyether polyol B and polyether polyol C into high-EO polyether polyol A and polymer polyol D, and mixing;
(4) and (3) milky white: pouring the mixture into a mold quickly, and observing the mixture to change from semitransparent to completely turbid and whitish viscous liquid;
(5) and (3) gel: the rising foam was observed to stop growing, stabilize and gel, with a large number of bubbles spitting out of the skin.
The invention has the beneficial effects that:
compared with the traditional mattress, the invention improves the main raw materials and the process for synthesis, improves the closed pore shrinkage performance of the sponge, improves the mechanical property and the durability of the sponge, and can well solve the problems of odor and VOC in the application process of the field of furniture of the sponge mattress. Meanwhile, in the synthesis process, the density of the slow rebound sponge is reduced to 25kg/m3 at least by controlling the formula process, and certain compression strength and support property can be maintained, so that the harsh condition that the finished sponge product can be compressed in vacuum is met.
Detailed Description
The present invention will be further described with reference to the following examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.
Example 1
A low-density vacuum compressible memory sponge comprises the following components in parts by weight: high-EO polyether polyol a: 80 parts of polyether polyol B: 5 parts of polyether polyol C: 5 parts, polymer polyol D: 10 parts, catalyst: 0.7 part of special composite silicone oil: 3 parts of foaming agent: 5 parts of isocyanate: 60 parts.
The high EO polyether polyol A is a polyether polyol having a hydroxyl value of 32 mgKOH/g.
The polyether polyol B is polyether polyol with the difunctional and the hydroxyl value of 56mgKOH/g, and is grafted by EO/PO blocks.
The polyether polyol C is trifunctional polyether polyol with a hydroxyl value of 56mgKOH/g, and is grafted by an EO/PO block.
Polymer polyol D is a trifunctional, 28mgKOH/g hydroxyl polymer polyol.
The catalyst is a tin catalyst.
The foaming agent is water and a physical foaming agent.
The isocyanate is special modified MDI.
A preparation method of a low-density vacuum compressible memory sponge comprises the following steps:
(1) preparation of raw materials: preparing raw materials according to a formula;
(2) vacuum degassing treatment: vacuum degassing high-EO polyether polyol A, polyether polyol B, polyether polyol C and polymer polyol D under the condition that the vacuum degree is 0.07-0.08Mpa, controlling the temperature at 30 ℃ and lasting for 2 hours;
(3) mixing: premixing polyether polyol B and polyether polyol C, adding the premixed polyether polyol B and polyether polyol C into high-EO polyether polyol A and polymer polyol D, and mixing;
(4) and (3) milky white: pouring the mixture into a mold quickly, and observing the mixture to change from semitransparent to completely turbid and whitish viscous liquid;
(5) and (3) gel: the rising foam was observed to stop growing, stabilize and gel, with a large number of bubbles spitting out of the skin.
Specifically, firstly, the raw materials are subjected to vacuum degassing treatment to reduce micromolecular volatile substances in a raw material system, and then polyether with high EO content, grafted polyether, modified MDI, special composite silicone oil, a chemical foaming agent, a physical foaming agent and polyether polyol with small molecular weight are mainly selected as main foaming raw materials in a formula system through optimizing an experimental formula to produce and foam. And finally, in the foaming process, the polyether polyol B and the polyether polyol C are premixed, so that two raw materials with different properties can be formed into more uniform raw material components, and the reaction is more sufficient.
The density of the traditional slow rebound sponge is generally 40 kg/m. Compared with the prior art, on one hand, the polyether with high EO content is selected as a main raw material to synthesize the polyurethane soft foam memory sponge, the polyether with high EO content has higher reaction activity compared with the common slow rebound polyether, and has obvious advantages in the aspect of reaction efficiency, so that the polyurethane soft foam memory sponge can be used as a low-density memory sponge to create innate feasibility. Meanwhile, in a formula system, the proportion of the chemical foaming agent and the physical foaming agent is adjusted, so that the density of the sponge is reduced, and the reaction heat of the whole reaction can be controlled, and the fire caused by overhigh central temperature of the sponge is avoided. Polyether polyol with small molecular weight is added into a formula system to improve the crosslinking structure of the slow rebound memory sponge, so that the crosslinking strength of the sponge can be improved, the quality requirement of vacuum compression at low density can be met, and the durability of the sponge is further improved; on the other hand, the problem of the sponge in terms of smell and VOC can be well solved by adopting the modified MDI as another main raw material for synthesizing the memory sponge, and meanwhile, the hardness of the sponge can be well controlled by adjusting the proportion of the MDI because the rigid chain segment of the MDI is stronger than that of TDI, so that the defect of insufficient support of the sponge under the condition of low density is overcome.
In terms of catalyst: the traditional catalysis mode is that an amine catalyst is used as a catalyst for foaming reaction of water and isocyanate, and experiments prove that the problem of sponge amine odor can be effectively solved by using a non-amine catalyst as a substitute.
In the aspect of production process: in the process of processing, the polyether polyol B and the polyether polyol C are premixed and then added into the high-EO polyether polyol A and the polymer polyol D, so that the materials are more favorably stirred uniformly and accurately metered.
While the present invention has been described with reference to the specific embodiments, the present invention is not limited thereto, and various changes may be made without departing from the spirit of the present invention.
Claims (10)
1. A low-density vacuum compressible memory sponge is characterized in that the low-density vacuum compressible memory sponge comprises the following components in parts by weight: high-EO polyether polyol a: 1-80 parts of polyether polyol B: 1-20 parts of polyether polyol C: 1-10 parts of polymer polyol D: 0.1-50 parts of catalyst: 0.1-0.7 part of special composite silicone oil: 0.5-3 parts of foaming agent: 1-8 parts of isocyanate: 40-80 parts.
2. The low-density vacuum compressible memory sponge according to claim 1, is characterized in that the formula comprises the following components in parts by weight: high-EO polyether polyol a: 80 parts of polyether polyol B: 5 parts of polyether polyol C: 5 parts, polymer polyol D: 10 parts, catalyst: 0.7 part of special composite silicone oil: 3 parts of foaming agent: 5 parts of isocyanate: 60 parts.
3. A low density vacuum compressible memory sponge according to claim 1, wherein the high EO polyether polyol a is a polyether polyol having a hydroxyl value of 32 mgKOH/g.
4. A low density vacuum compressible memory sponge according to claim 1, wherein said polyether polyol B is a difunctional polyether polyol with a hydroxyl value of 56mgKOH/g, said polyether polyol B being grafted with EO/PO blocks.
5. A low density vacuum compressible memory sponge according to claim 1, wherein the polyether polyol C is a trifunctional polyether polyol with a hydroxyl value of 56mgKOH/g, said polyether polyol C being grafted with EO/PO blocks.
6. The low density vacuum compressible memory sponge according to claim 1, wherein the polymer polyol D is a trifunctional polymer polyol with a hydroxyl value of 28 mgKOH/g.
7. The low density vacuum compressible memory sponge according to claim 1, wherein the catalyst is a tin catalyst.
8. A low density, vacuum compressible memory sponge according to claim 1 wherein the foaming agent is water and a physical foaming agent.
9. A low density vacuum compressible memory sponge according to claim 1, wherein the isocyanate is a specialty modified MDI.
10. A preparation method of a low-density vacuum compressible memory sponge is characterized by comprising the following steps:
(1) preparation of raw materials: preparing the raw materials according to a formula;
(2) vacuum degassing treatment: vacuum degassing high-EO polyether polyol A, polyether polyol B, polyether polyol C and polymer polyol D under the condition that the vacuum degree is 0.07-0.08Mpa, controlling the temperature at 30 ℃ and lasting for 2 hours;
(3) mixing: premixing polyether polyol B and polyether polyol C, adding the premixed polyether polyol B and polyether polyol C into high-EO polyether polyol A and polymer polyol D, and mixing;
(4) and (3) milky white: pouring the mixture into a mold quickly, and observing the mixture to change from semitransparent to completely turbid and whitish viscous liquid;
(5) and (3) gel: the rising foam was observed to stop growing, stabilize and gel, with a large number of bubbles spitting out of the skin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011320064.1A CN112321789A (en) | 2020-11-23 | 2020-11-23 | Low-density memory sponge capable of being compressed in vacuum and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011320064.1A CN112321789A (en) | 2020-11-23 | 2020-11-23 | Low-density memory sponge capable of being compressed in vacuum and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112321789A true CN112321789A (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011320064.1A Pending CN112321789A (en) | 2020-11-23 | 2020-11-23 | Low-density memory sponge capable of being compressed in vacuum and preparation method thereof |
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| Country | Link |
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| CN (1) | CN112321789A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307934A (en) * | 2021-06-01 | 2021-08-27 | 泉州源利鞋材有限公司 | Low-density slow-resilience sponge and preparation process thereof |
| CN113637317A (en) * | 2021-08-13 | 2021-11-12 | 常州丰锦塑胶科技有限公司 | High-density memory sponge and compounding process thereof |
-
2020
- 2020-11-23 CN CN202011320064.1A patent/CN112321789A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307934A (en) * | 2021-06-01 | 2021-08-27 | 泉州源利鞋材有限公司 | Low-density slow-resilience sponge and preparation process thereof |
| CN113637317A (en) * | 2021-08-13 | 2021-11-12 | 常州丰锦塑胶科技有限公司 | High-density memory sponge and compounding process thereof |
| CN113637317B (en) * | 2021-08-13 | 2022-06-28 | 常州丰锦塑胶科技有限公司 | High-density memory sponge and compounding process thereof |
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Country or region after: China Address after: 2200 Huiwang Road, Waigang Industrial Park, Jiading District, Shanghai, 201807 Applicant after: Shanghai Xinyuan New Materials Technology (Group) Co.,Ltd. Address before: 2200 Huiwang Road, Waigang Industrial Park, Jiading District, Shanghai, 201807 Applicant before: SHANGHAI XINYUAN NEW MATERIAL TECHNOLOGY CO.,LTD. Country or region before: China |