CN117866165A - Breathable biological-based sponge and preparation method thereof - Google Patents
Breathable biological-based sponge and preparation method thereof Download PDFInfo
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- CN117866165A CN117866165A CN202410108206.XA CN202410108206A CN117866165A CN 117866165 A CN117866165 A CN 117866165A CN 202410108206 A CN202410108206 A CN 202410108206A CN 117866165 A CN117866165 A CN 117866165A
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- 238000002360 preparation method Methods 0.000 title abstract description 17
- 229920000570 polyether Polymers 0.000 claims abstract description 106
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 105
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 86
- 229920005862 polyol Polymers 0.000 claims abstract description 64
- 150000003077 polyols Chemical class 0.000 claims abstract description 64
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 42
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 30
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 30
- 229920002635 polyurethane Polymers 0.000 claims abstract description 22
- 239000004814 polyurethane Substances 0.000 claims abstract description 22
- 239000003054 catalyst Substances 0.000 claims abstract description 19
- 239000012948 isocyanate Substances 0.000 claims abstract description 17
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 17
- 229920002545 silicone oil Polymers 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 27
- 239000002245 particle Substances 0.000 claims description 15
- 239000007822 coupling agent Substances 0.000 claims description 14
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 239000012974 tin catalyst Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 150000001412 amines Chemical class 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000012295 chemical reaction liquid Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 2
- 239000003623 enhancer Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract 1
- 230000036413 temperature sense Effects 0.000 abstract 1
- 238000009423 ventilation Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 24
- 239000003153 chemical reaction reagent Substances 0.000 description 8
- 238000009472 formulation Methods 0.000 description 8
- 239000003208 petroleum Substances 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 8
- 210000004027 cell Anatomy 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 238000005187 foaming Methods 0.000 description 6
- 230000035699 permeability Effects 0.000 description 6
- 230000008093 supporting effect Effects 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229920002521 macromolecule Polymers 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004359 castor oil Substances 0.000 description 2
- 235000019438 castor oil Nutrition 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 210000000497 foam cell Anatomy 0.000 description 1
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- 230000014759 maintenance of location Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a breathable biological-based sponge and a preparation method thereof, and relates to the technical field of high polymer materials, wherein the breathable biological-based sponge is prepared from the following components in parts by weight: 60-80 parts of bio-based polyether polyol, 10-30 parts of slow rebound polyether polyol, 5-10 parts of modified polyether reinforcing agent, 0.3-1 part of polyurethane catalyst, 2-3 parts of water, 0.5-2 parts of silicone oil and 40-60 parts of modified isocyanate MDI; the sum of the weight parts of the bio-based polyether polyol, the slow rebound polyether polyol and the modified polyether reinforcing agent is 100 parts; the modified polyether reinforcing agent is prepared by modifying the surface of slow rebound polyether polyol by modified nano silicon dioxide. The biological-based sponge has better improved mechanical properties such as ventilation, slow rebound, hardness and the like, and has excellent effects on durability of hardness and temperature sense.
Description
Technical Field
The invention relates to the technical field of memory mattresses, in particular to a breathable bio-based sponge and a preparation method thereof.
Background
The sponge in the mattress and the pillow is often polyurethane sponge as a filler, and can effectively absorb impact force and reduce vibration through the obvious rebound capability of the sponge and adapt to external force compression through stress relaxation, so the memory sponge is a preferable material of bedding articles such as mattresses, pillows and the like.
The polyurethane sponge in the current market is mainly prepared by chemical reaction of petroleum byproduct polyether polyol and isocyanate, while the main component petroleum byproduct polyether polyol is prepared by taking nonrenewable resource petroleum as a raw material, and along with the continuous decrease of nonrenewable petroleum quantity, the supply of the material is more and more scarce, and secondly, the excessive use of petroleum causes pollution to the environment, so that the carbon emission is increased. That is, most of the existing polyurethane sponges are non-biological polyurethane sponges, and along with the development of low-carbon recycling economy, the polyurethane sponges with high biological addition amount are the trend of development of future industries such as mattresses, pillows and the like.
However, the existing polyurethane sponge still has the following defects:
for example, patent CN105315449A, CN110402263A prepares slow rebound sponge with good air permeability through adjusting polyether structure, but the raw materials of the polyether structure are all non-biological polyether polyol, which is not environment-friendly and has high cost. At present, castor oil-based polyol is used for partially replacing petroleum-based polyether polyol, and although the biodegradability of polyurethane sponge can be improved, the foaming Kong Duowei of the castor oil-based polyol seals pores, so that the air permeability of the polyurethane sponge is affected, and in the prior art, a pore opening agent is often required to be additionally added in a formula to improve the problem of the pores, but the supportability of the memory sponge is weakened, the hardness is reduced, and the memory sponge is easy to collapse after long time use. Meanwhile, the existing polyurethane sponge has higher sensitivity to temperature, the temperature is lower than 5 ℃, the sponge is softened, the temperature is higher than 30 ℃, the sponge is hardened, and the use comfort of the sponge is seriously affected in places with larger quaternary temperature difference.
Disclosure of Invention
In order to overcome the defects in the prior art, one of the purposes of the invention is to provide a breathable biological-based sponge.
The second object of the invention is to provide a method for preparing the breathable bio-based sponge.
One of the purposes of the invention is realized by adopting the following technical scheme: the breathable biological-based sponge is prepared from the following components in parts by weight: 60-80 parts of bio-based polyether polyol, 10-30 parts of slow rebound polyether polyol, 5-10 parts of modified polyether reinforcing agent, 0.3-1 part of polyurethane catalyst, 2-3 parts of water, 0.5-2 parts of silicone oil and 40-60 parts of modified isocyanate MDI;
the sum of the weight parts of the bio-based polyether polyol, the slow rebound polyether polyol and the modified polyether reinforcing agent is 100 parts;
the modified polyether reinforcing agent is formed by modifying the surface of slow rebound polyether polyol by modified nano silicon dioxide.
Further, the breathable biological-based sponge is prepared from the following components in parts by weight: 65-75 parts of bio-based polyether polyol, 15-25 parts of slow rebound polyether polyol, 8-12 parts of modified polyether reinforcing agent, 0.3-1 part of polyurethane catalyst, 2-3 parts of water, 1-1.5 parts of silicone oil and 43-48 parts of modified isocyanate MDI.
Further, the bio-based polyether polyol is prepared from the chemical bio-based polyether polyol of Wanhua FB350 and FB390 in a mass ratio of (1-2): 3, mixing; the slow rebound polyether polyol is polyether polyol KX03 provided by Jiangsu long energy-saving new material science and technology Co.
Further, the preparation method of the modified polyether reinforcing agent comprises the following steps:
(a) Selecting nano silicon dioxide with the particle size of 600-800nm, and modifying nano silicon dioxide particles by using an aminosilane coupling agent to obtain modified nano silicon dioxide;
(b) Adding the modified nano silicon dioxide obtained in the step (a) and a tin catalyst T9 and slow rebound polyether polyol into a reaction kettle, and reacting for 1-2h at 80-100 ℃ to obtain the modified polyether reinforcing agent.
Further, in the step (a), the nano silicon dioxide is selected from one of an aminosilane coupling agent KH-570, KH-792 and KH-602, and the particle size of the nano silicon dioxide is 600-800 nm; the mass ratio of the aminosilane coupling agent to the nano silicon dioxide is (2-3): 100.
further, in the step (b), the mass ratio of the modified nano silica to the tin catalyst T9 to the bio-based polyether polyol is (15-20): (0.05-0.1): 100.
further, the polyurethane catalyst is selected from one or a mixture of two of an amine catalyst A1 and an amine catalyst A33.
Further, the silicone oil is selected from silicone oil 8002.
Further, the modified isocyanate MDI is selected from one of Wanhua chemical PM-100, wanhua chemical PM-200, basoff M20S and Colorum 44V 20L.
The second purpose of the invention is realized by adopting the following technical scheme: a method of preparing a breathable bio-based sponge as described above comprising the steps of:
(1) Weighing the following components in percentage by weight: adding the components into a reaction container, and stirring and mixing uniformly at normal temperature to form a mixed reaction solution;
(2) Adding the modified isocyanate MDI with the formula amount into the mixed reaction liquid in the step (1), heating to 85-95 ℃, stirring and reacting for 30-40min, pouring into a mould, curing and cooling to obtain the breathable bio-based sponge.
Compared with the prior art, the invention has the beneficial effects that:
(1) The application provides a novel formula of a bio-based polyurethane sponge and a preparation method thereof, wherein the sponge has smaller overall density, similar hardness, high bio-based content and good environmental protection.
(2) The modified silicon dioxide obtained by the nano silica sol modified by the coupling agent can be stably and uniformly dispersed in the slow rebound polyether polyol, and is crosslinked with the slow rebound polyether polyol to form a network interpenetrating structure under the action of the catalyst, so that on one hand, the supporting property among cells in the subsequent foaming reaction process is increased, the air permeability of the sponge is improved, on the other hand, the supporting acting force among macromolecules in the subsequent gel reaction process is improved, and the rigidity of the whole cell structure of the polymer and the durability of the polymer are improved. In addition, the modified polyether reinforcing agent can also reduce the sensitivity of the sponge to temperature, and ensures the comfort of the sponge.
(3) The sponge is prepared by using renewable bio-based raw materials instead of petroleum-based raw materials, so that dependence on non-renewable resources can be reduced, the method is simple, and industrial mass production can be realized by using the existing production device and production process.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
The breathable biological-based sponge is prepared from the following components in parts by weight: 60-80 parts of bio-based polyether polyol, 10-30 parts of slow rebound polyether polyol, 5-10 parts of modified polyether reinforcing agent, 0.3-1 part of polyurethane catalyst, 2-3 parts of water, 0.5-2 parts of silicone oil and 40-60 parts of modified isocyanate MDI;
the sum of the weight parts of the bio-based polyether polyol, the slow rebound polyether polyol and the modified polyether reinforcing agent is 100 parts;
the modified polyether reinforcing agent is formed by modifying the surface of slow rebound polyether polyol by modified nano silicon dioxide.
As a further preferable scheme, the breathable biological-based sponge is prepared from the following components in parts by weight: 65-75 parts of bio-based polyether polyol, 15-25 parts of slow rebound polyether polyol, 8-12 parts of modified polyether reinforcing agent, 0.3-1 part of polyurethane catalyst, 2-3 parts of water, 0.5-2 parts of silicone oil and 43-48 parts of modified isocyanate MDI.
As a further preferable scheme, the bio-based polyether polyol is prepared from the Wanhua chemical bio-based polyether polyol FB350 and FB390 in a mass ratio of (1-2): 3, mixing.
As a further preferable scheme, the slow rebound polyether polyol is polyether polyol KX03 provided by Jiangsu long energy-saving new material science and technology Co.
In the invention, the preparation method of the modified polyether reinforcing agent comprises the following steps:
(a) Selecting nano silicon dioxide with the particle size of 600-800nm, and modifying nano silicon dioxide particles by using an aminosilane coupling agent to obtain modified nano silicon dioxide;
(b) Adding the modified nano silicon dioxide obtained in the step (a) and a tin catalyst T9 and slow rebound polyether polyol into a reaction kettle, and reacting for 1-2h at 80-100 ℃ to obtain the modified polyether reinforcing agent.
As a further preferable scheme, in the step (a), the nano silicon dioxide is selected from the group consisting of an aminosilane coupling agent KH-570, KH-792 and KH-602, and the particle size of the nano silicon dioxide is 600-800 nm; the mass ratio of the aminosilane coupling agent to the nano silicon dioxide is (2-3): 100.
as a further preferable scheme, in the step (b), the mass ratio of the modified nano silica to the tin catalyst T9 to the bio-based polyether polyol is (15-20): (0.05-0.1): 100.
the modified silicon dioxide obtained by the nano silica sol modified by the coupling agent can be stably and uniformly dispersed in the slow rebound polyether polyol, and is crosslinked with the slow rebound polyether polyol to form a network interpenetrating structure under the action of the catalyst, so that on one hand, the supporting property among cells in the subsequent foaming reaction process is increased, the air permeability of the sponge is improved, on the other hand, the supporting acting force among macromolecules in the subsequent gel reaction process is improved, and the rigidity of the whole cell structure of the polymer and the durability of the polymer are improved. In addition, the modified polyether reinforcing agent can also reduce the sensitivity of the sponge to temperature, and ensures the comfort of the sponge.
As a further preferred embodiment, the polyurethane catalyst is selected from one or a mixture of two of amine catalyst A1 and amine catalyst a 33.
As a further preferable embodiment, the silicone oil is selected from silicone oil 8002.
As a further preferable scheme, the modified isocyanate MDI is selected from one of Wanhua chemical PM-100, wanhua chemical PM-200, basoff M20S and Korsche 44V 20L.
The invention also provides a preparation method of the breathable biological-based sponge, which comprises the following steps:
(1) Weighing the following components in percentage by weight: adding the components into a reaction container, and stirring and mixing uniformly at normal temperature to form a mixed reaction solution;
(2) Adding the modified isocyanate MDI with the formula amount into the mixed reaction liquid in the step (1), heating to 85-95 ℃, stirring and reacting for 30-40min, pouring into a mould, curing and cooling to obtain the breathable bio-based sponge.
In polyurethane foam production, there are many complex chemical reactions, and catalysts are very important auxiliaries to adjust the reaction rate so that the foaming and gelling reactions reach equilibrium. The foaming reaction is that the active groups-NCO and H in isocyanate 2 The process of O reaction to produce gaseous carbon dioxide, causing the foam to expand; the gel reaction is the reaction of the reactive group-NCO in the isocyanate with the reactive group-OH of the polyol, so that the cell network reaches a sufficient strength. According to the method, the supporting performance among cells in the subsequent foaming reaction process is improved by adding the modified polyether reinforcing agent, the air permeability of the sponge is improved, supporting acting force among macromolecules in the subsequent gel reaction process is improved, and the rigidity of the whole cell structure of the polymer and the durability of the polymer are improved. In addition, the modified polyether reinforcing agent can also reduce the sensitivity of the sponge to temperature, and ensures the comfort of the sponge.
The preparation method is simple, and the industrialized mass production can be realized by using the existing production device and production process.
The following are specific examples of the present invention, in which raw materials, equipment, etc. used are available in a purchase manner except for specific limitations.
Examples 1-3 and comparative examples 1-10
Raw materials are weighed according to the proportion in the following table 1 respectively, a sponge mattress is manufactured according to the preparation method after the table 1, the sponge mattresses of different embodiments are correspondingly obtained, and the specific details are shown in the table 1:
table 1 raw material proportioning table for example 1-3 sponge mattress
Wherein the modified polyether reinforcing agent in table 1 is prepared by the following method: (a) Selecting nano silicon dioxide with the particle size of 700nm, and modifying nano silicon dioxide particles by using an aminosilane coupling agent KH-570 to obtain modified nano silicon dioxide; (2) Adding the modified nano silicon dioxide obtained in the step (b) and a tin catalyst T9 and slow rebound polyether polyol into a reaction kettle, and reacting for 1.5 hours at the temperature of 85 ℃, wherein the mass ratio of the modified nano silicon dioxide to the tin catalyst T9 to the bio-based polyether polyol is 18:0.08:100, to obtain the modified polyether reinforcing agent.
The method for preparing the sponge mattress of the embodiment 1-the embodiment 3 comprises the following steps:
(1) Weighing the following components in percentage by weight: adding the components into a reaction container, and stirring and mixing uniformly at normal temperature to form a mixed reaction solution;
(2) Adding the modified isocyanate MDI with the formula amount into the mixed reaction liquid in the step (1), heating to 85-95 ℃, stirring and reacting for 30-40min, pouring into a mould, curing and cooling to obtain the breathable bio-based sponge.
Comparative example 1
Comparative example 1 differs from example 2 in that: in the formulation of the sponge mattress, the amount of the bio-based polyether polyol FB350 is greater than the amount of the bio-based polyether polyol FB390, namely, 350 parts of FB+39030 parts of FB, and the rest steps and conditions are basically the same as those of the used reagent formulation in example 2.
Comparative example 2
Comparative example 2 differs from example 2 in that: in the formulation of the sponge mattress, no slow rebound polyether polyol is added, namely polyether polyol KX03 is 0 part, and the rest steps and conditions are basically the same as those of the used reagent formulation in the example 2.
Comparative example 3
Comparative example 3 differs from example 2 in that: in the formulation of the sponge mattress, no modified polyether reinforcing agent is added, namely, 0 part of modified polyether reinforcing agent is added, and the rest steps and conditions are basically the same as those of the used reagent formulation as in the example 2.
Comparative example 4
Comparative example 4 differs from example 2 in that: in the formulation of the sponge mattress, the modified polyether reinforcing agent is replaced by conventional non-coupled modified silica, namely 8 parts of nano silica is used for replacing 8 parts of modified polyether reinforcing agent, the particle size of the nano silica is 600-800nm, and the rest steps and conditions are basically the same as those of the formulation of the used reagent in example 2.
Comparative example 5
Comparative example 5 differs from example 2 in that: in the preparation step of the modified polyether reinforcing agent, the step (b) is absent, namely the modified polyether reinforcing agent is replaced by the silica subjected to the coupling modification in the step (a) (the nano silica with the particle size of 600-800nm is selected, the nano silica particles are modified by the aminosilane coupling agent to obtain modified nano silica, 8 parts of modified nano silica is replaced by 8 parts of modified polyether reinforcing agent), and the rest steps and conditions are basically the same as those of the formula of the used reagent in the embodiment 2.
Comparative example 6
Comparative example 6 differs from example 2 in that: in the preparation step of the modified polyether reinforcing agent, the step (a) is absent, namely, the non-coupled modified silica is polymerized in the step (b) to obtain the polymer instead of the modified polyether reinforcing agent (the non-coupled modified nano silica, the tin catalyst T9 and the polymer after the bio-based polyether polyol is added into the reaction kettle to react are used for replacing the modified polyether reinforcing agent), and the rest steps and the conditions are basically the same as those of the used reagent formula in the example 2.
Comparative example 7
Comparative example 7 differs from example 2 in that: in the preparation step of the modified polyether reinforcing agent, nano silicon dioxide with the particle size of 400nm is selected, and the other steps and conditions are basically the same as those of the preparation method of the modified polyether reinforcing agent in the embodiment 2.
Comparative example 8
Comparative example 8 differs from example 2 in that: in the preparation step of the modified polyether reinforcing agent, nano silicon dioxide with the particle size of 900nm is selected, and the other steps and conditions are basically the same as those of the preparation method of the modified polyether reinforcing agent in the embodiment 2.
Comparative example 9
Comparative example 9 differs from example 2 in that: in the preparation step of the modified polyether reinforcing agent, the polyether polymer selected in the step (b) is different, FB390 is adopted to replace KX03, and the other steps and conditions are basically the same as those of the used reagent formula in the example 2.
Comparative example 10
Comparative example 10 differs from example 2 in that: in the formula of the sponge mattress, petroleum polyether polyol is adopted to replace bio-based polyether polyol (Wanhua chemical F3135+POP2045 is adopted to replace FB305+FB 390), the modified polyester reinforcing agent is 0 part, namely the formula of the existing common non-bio-based polyurethane sponge, and the rest steps and conditions are basically the same as those of the used reagent formula in the example 2.
The performance of the sponge mattresses of example 2 and comparative examples 1-10 was tested, and the test items and results are shown in Table 2.
Table 2 shows test items of sponge
Table 3 shows basic performance test data for each example sponge mattress
| Test item | Sponge density (kg/m) 3 ) | Hardness (pound) | Biobased content (%) |
| Example 1 | 38.6 | 7 | 28 |
| Example 2 | 40 | 9 | 30.2 |
| Example 3 | 41.3 | 10 | 25 |
| Comparative example 10 | 53 | 12 | / |
As shown in the table above, the sponge prepared by the method is a bio-based polyurethane sponge, and has the advantages of smaller overall density, similar hardness, high bio-based content and good environmental protection.
Table 4 shows application performance test data of each example sponge mattress
Compared with the comparative example, the biological base sponge has better improved mechanical properties such as air permeability, slow rebound performance, hardness performance and the like, and has excellent effects on durability of hardness and temperature feeling. In particular, the sponge has excellent effect under the test of hardness retention rate, the foam cell structure of the invention is compact and communicated, and the sponge has a buffering function, so that the sponge is not easy to age even if the sponge is pressed by external heavy pressure, the original structure and elasticity can be kept for a long time, and the sponge has more excellent compression durability.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (10)
1. The breathable biological-based sponge is characterized by being prepared from the following components in parts by weight: 60-80 parts of bio-based polyether polyol, 10-30 parts of slow rebound polyether polyol, 5-10 parts of modified polyether reinforcing agent, 0.3-1 part of polyurethane catalyst, 2-3 parts of water, 0.5-2 parts of silicone oil and 40-60 parts of modified isocyanate MDI;
the sum of the weight parts of the bio-based polyether polyol, the slow rebound polyether polyol and the modified polyether reinforcing agent is 100 parts;
the modified polyether reinforcing agent is formed by modifying the surface of slow rebound polyether polyol by modified nano silicon dioxide.
2. The breathable bio-based sponge of claim 1, wherein the sponge is prepared from the following components in parts by weight: 65-75 parts of bio-based polyether polyol, 15-25 parts of slow rebound polyether polyol, 8-12 parts of modified polyether reinforcing agent, 0.3-1 part of polyurethane catalyst, 2-3 parts of water, 1-1.5 parts of silicone oil and 43-48 parts of modified isocyanate MDI.
3. The breathable bio-based sponge according to claim 1, wherein said bio-based polyether polyol is composed of the chemical bio-based polyether polyols of the formula FB350 and FB390 in a mass ratio of (1-2): 3, mixing; the slow rebound polyether polyol is polyether polyol KX03 provided by Jiangsu long energy-saving new material science and technology Co.
4. The breathable, bio-based sponge of claim 1 wherein said modified polyether enhancer is prepared by the process of:
(a) Selecting nano silicon dioxide with the particle size of 600-800nm, and modifying nano silicon dioxide particles by using an aminosilane coupling agent to obtain modified nano silicon dioxide;
(b) Adding the modified nano silicon dioxide obtained in the step (a) and a tin catalyst T9 and slow rebound polyether polyol into a reaction kettle, and reacting for 1-2h at 80-100 ℃ to obtain the modified polyether reinforcing agent.
5. The breathable biological-based sponge according to claim 4, wherein in step (a), the nanosilica is selected from the group consisting of particles having a size of 600-800nm, and the aminosilane coupling agent is selected from the group consisting of aminosilane coupling agents KH-570, KH-792, KH-602; the mass ratio of the aminosilane coupling agent to the nano silicon dioxide is (2-3): 100.
6. the breathable bio-based sponge according to claim 4, wherein in step (b), the mass ratio of the modified nano-silica, tin catalyst T9, bio-based polyether polyol is (15-20): (0.05-0.1): 100.
7. the breathable bio-based sponge according to claim 1, wherein said polyurethane catalyst is selected from one or a mixture of two of amine catalyst A1, amine catalyst a 33.
8. A breathable bio-based sponge according to claim 1 wherein said silicone oil is selected from silicone oil 8002.
9. The breathable bio-based sponge according to claim 1, wherein said modified isocyanate MDI is selected from one of the group consisting of vancomic PM-100, vancomic PM-200, basf M20S, costing 44V 20L.
10. A method of preparing a breathable bio-based sponge according to any one of claims 1 to 9, comprising the steps of:
(1) Weighing the following components in percentage by weight: adding the components into a reaction container, and stirring and mixing uniformly at normal temperature to form a mixed reaction solution;
(2) Adding the modified isocyanate MDI with the formula amount into the mixed reaction liquid in the step (1), heating to 85-95 ℃, stirring and reacting for 30-40min, pouring into a mould, curing and cooling to obtain the breathable bio-based sponge.
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| CN202410108206.XA CN117866165A (en) | 2024-01-26 | 2024-01-26 | Breathable biological-based sponge and preparation method thereof |
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| CN202410108206.XA CN117866165A (en) | 2024-01-26 | 2024-01-26 | Breathable biological-based sponge and preparation method thereof |
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