CN113999363B - Preparation method of high-bearing low-temperature insensitive slow-rebound sponge - Google Patents
Preparation method of high-bearing low-temperature insensitive slow-rebound sponge Download PDFInfo
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- CN113999363B CN113999363B CN202111445046.0A CN202111445046A CN113999363B CN 113999363 B CN113999363 B CN 113999363B CN 202111445046 A CN202111445046 A CN 202111445046A CN 113999363 B CN113999363 B CN 113999363B
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- polyether polyol
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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
- C08G18/4833—Polyethers containing oxyethylene units
- C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
-
- 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
- C08G18/4816—Two or more polyethers of different physical or chemical nature mixtures of two or more polyetherpolyols having at least three 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
- C08G2101/00—Manufacture of cellular products
-
- 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
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/005—< 50kg/m3
-
- 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
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
Abstract
The invention provides a preparation method of a high-bearing low-temperature insensitive slow-resilience sponge, belonging to the field of organic synthesis. Mixing polyether polyol A, polyether polyol B, polyether polyol C and polymer polyol D, adding a tertiary amine catalyst, an organic metal catalyst, organic silicon oil and water, and stirring to obtain a white material; pouring toluene diisocyanate into the white material, stirring, foaming and curing to obtain the high-bearing low-temperature insensitive slow-resilience sponge; the hydroxyl value of the polyether polyol A is 25 to 40, and the functionality is 2 to 4; the hydroxyl value of the polyether polyol B is 160 to 200, and the functionality is 3 to 4.5; the hydroxyl value of the polyether polyol C is 140 to 180, and the functionality is 2 to 4; the polymer polyol D has a hydroxyl value of 170 to 200 and a functionality of 2 to 4. The sponge prepared by the method has better bearing performance, and does not harden in hand feeling under the condition of low temperature, namely is not sensitive to low temperature.
Description
Technical Field
The invention relates to a preparation method of a high-bearing low-temperature insensitive slow-rebound sponge.
Background
The slow rebound sponge is also called inert sponge, memory sponge, low rebound sponge, slow elastic cotton and zero-pressure-sense sponge, and due to the unique pressure relieving characteristic of the slow rebound sponge, the slow rebound pillow and the mattress can enable a body to rest at a natural non-pressure position. The slow rebound sponge in the prior art generally has the problems of poor bearing performance and hard handfeel of the sponge under the low-temperature condition.
Disclosure of Invention
The invention aims to provide a preparation method of a high-bearing low-temperature insensitive slow-rebound sponge, and the sponge prepared by the method has better bearing performance, and is not hardened in hand feeling under the low-temperature condition, namely is insensitive to low temperature.
The purpose of the invention is realized by adopting the following technical scheme:
a preparation method of a high-bearing low-temperature insensitive slow-recovery sponge comprises the following steps:
(1) Mixing 40-60 parts by mass of polyether polyol A, 2-20 parts by mass of polyether polyol B, 40-60 parts by mass of polyether polyol C and 2-10 parts by mass of polymer polyol D, then adding 0.2-0.8 part by mass of tertiary amine catalyst, 0.1-0.5 part by mass of organic metal catalyst, 0.1-0.5 part by mass of organic silicon oil and 2-4 parts by mass of water, and uniformly stirring to obtain a white material;
(2) Pouring 35-45 parts by mass of toluene diisocyanate into the mixed white material, stirring, foaming and curing to obtain the high-bearing low-temperature insensitive slow-resilience sponge;
the hydroxyl value of the polyether polyol A is 25-40, and the functionality is 2-4; the hydroxyl value of the polyether polyol B is 160-200, and the functionality is 3-4.5; the hydroxyl value of the polyether polyol C is 140-180, and the functionality is 2-4; the polymer polyol D has a hydroxyl number of 170 to 200 and a functionality of 2 to 4.
In the invention, the polyether polyol A is polyoxypropylene ethylene oxide polyether triol; the polyether polyol B is polyoxypropylene ethylene oxide polyether triol; the polyether polyol C is polyoxypropylene ethylene oxide polyether tetraol; the polymer polyol D is a polyoxypropylene oxyethylene polymer triol.
In a preferable technical scheme, the polyether polyol A is ZS-350G, the polyether polyol B is ZS-3160, the polyether polyol C is ZS-8180, and the polymer polyol D is POP-720.
In a preferred embodiment, the tertiary amine catalyst is a33.
In a preferred technical scheme, the organic metal catalyst is dibutyltin dilaurate.
In a preferable technical scheme, the organic silicone oil is LR-1085.
Has the advantages that: the high-bearing low-temperature insensitive slow-rebound sponge prepared by the invention has higher bearing capacityThe existing slow-rebound sponge has excellent rebound time of about 5s, and does not harden at low temperature of-10 ℃ to 10 ℃, namely, is insensitive at low temperature. Through detection, the 65%/25% indentation ratio of the sponge is 4.2-5.2, and the density is only 30g/m 3 On the left and right sides, the low-density slow-resilience sponge not only has softer hand feeling, but also can reduce the cost in the production process.
Detailed Description
The present invention is further illustrated by the following examples.
Example 1
Polyether polyol A: is polyether polyol ZS-350G (purchased from New materials of Jiangsu's Mount Bell.), is polyoxypropylene ethylene oxide polyether triol, hydroxyl value: 30 (mgKOH/g), f (functionality) =3. Polyether polyol B: is polyether polyol ZS-3160 (from New materials of Jiangsu Kongshan Co., ltd.), is polyoxypropylene ethylene oxide polyether triol, hydroxyl value: 160 (mgKOH/g), f (functionality) =3. Polyether polyol C: the polyether polyol C is ZS-8180 (purchased from New materials of Jiangsu Konshan Co., ltd.), is polyoxypropylene ethylene oxide polyether tetrahydric alcohol, and has a hydroxyl value: 180 (mgKOH/g), f =4 (functionality). Polymer polyol D: is a polymer polyol POP-720 (available from New materials, jiangsu Boehringer, ltd.), is a polyoxypropylene oxyethylene polymer triol, hydroxyl value: 190 (mgKOH/g) solids content 20%, f =3 (functionality).
A33 Commercially available as 33% triethylenediamine solution as tertiary amine catalyst. T12 (commercially available) is dibutyl tin dilaurate, an organometallic catalyst. LR-1085 (commercially available) is a slow rebound silicone oil for sponges.
Adding 40g of polyether polyol A, 15g of polyether polyol B, 40g of polyether polyol C and 5g of polymer polyol D into a 1L beaker, then adding 0.3g of A, 0.1g of T12, LR-1085.2g and 2.5g of deionized water, stirring for 30s, and uniformly mixing to obtain a white material.
Free foaming: pouring 35g of TDI (toluene diisocynate) into the mixed white material, stirring for 10 seconds in a stirrer with the rotating speed of 4000-5000 r/min, pouring the foamed liquid into a mold, fully foaming until the foaming and the full curing are finished (the time of foaming and the full curing is 24 hours), and cutting to obtain the TDI/toluene diisocynate composite materialThe slow-recovery sponge is insensitive to high load and low temperature. The high-bearing low-temperature insensitive slow-rebound sponge has the rebound time of about 5s, does not harden at the low temperature of 10 ℃ below zero to 10 ℃, namely is insensitive at the low temperature and has the density of 35g/m 3 The sponge was tested to have a 65%/25% indentation ratio of 5.2.
Example 2
Adding 45g of polyether polyol A, 10g of polyether polyol B, 40g of polyether polyol C and 5g of polyether polyol D into a 1L beaker, then adding 0.4g of A33 (tertiary amine catalyst), 0.15g of T12 (organic metal catalyst), 0.35g of LR-1085 (organic silicone oil) and 3.5g of deionized water, stirring for 30s, and uniformly mixing to obtain a white material. The polyether polyol A, the polyether polyol B, the polyether polyol C and the polyether polyol D were the same as in example 1.
Free foaming: and (2) pouring 40g of TDI (toluene diisocyanate) into the mixed white material, stirring for 10 seconds in a stirrer at the rotating speed of 4000-5000 r/min, pouring the foamed liquid into a mold, fully foaming until the foaming is completely cured (the time for foaming until the foaming is completely cured is 24 hours), and then cutting to obtain the high-bearing low-temperature insensitive slow-resilience sponge. The high-load low-temperature insensitive slow-rebound sponge has the rebound time of about 5s, the hand feeling is not hardened at the low temperature of-10 ℃, namely the sponge is insensitive at the low temperature and has the density of 32g/m 3 The sponge was tested to have a 65%/25% indentation ratio of 4.7.
Example 3
Adding 40g of polyether polyol A, 10g of polyether polyol B, 40g of polyether polyol C and 10g of polymer polyol D into a 1L beaker, then adding 0.3g of A33 (tertiary amine catalyst), 0.1g of T12 (organic metal catalyst), 0.5g of LR-1085 (organic silicone oil) and 4g of deionized water, stirring for 30s, and uniformly mixing to obtain a white material. The procedure of example 1 was repeated except that the polyether polyol A, the polyether polyol B, the polyether polyol C and the polyether polyol D were used.
Free foaming: and (2) pouring 45g of TDI (toluene diisocyanate) into the mixed white material, stirring for 10 seconds in a stirrer at the rotating speed of 4000-5000 r/min, pouring the foamed liquid into a mold, fully foaming until the foamed liquid is completely cured (24 hours are needed for foaming until the foamed liquid is completely cured), and then cutting to obtain the high-bearing low-temperature insensitive slow-resilience sponge. The high bearing capacity is insensitive to low temperatureThe rebound time of the slow-rebound sponge is about 5s, the hand feeling is not hardened at the low temperature of-10 ℃ to 10 ℃, namely the slow-rebound sponge is insensitive at low temperature and has the density of 30g/m 3 The sponge was tested to have a 65%/25% indentation ratio of 4.8.
Example 4
55g of polyether polyol ZS-1618A (New Material, jiangsu Stanshan Co., ltd.), 35g of polyether polyol ZS-1073 (New Material, jiangsu Stanshan Co., ltd.) and 10g of polymer polyol H-45 (solid content 42%, new Material, jiangsu Stanshan Co., ltd.) were added to a 1L beaker, then 0.3g of delayed amine C-225 (commercially available), A331.5g, organic metal catalyst bismuth isooctanoate 0.4g, L-580 (organic silicone oil) 3g, deionized water 1.5g were added, stirred for 30s and mixed uniformly to obtain a white material.
Free foaming: and (2) pouring 30g of weighed modified black material (namely modified MDI103C sold in the market) into the mixed white material, stirring for 10 seconds by a stirrer at the rotating speed of 4000-5000 r/min, pouring the foamed liquid into a mould, fully foaming until the foamed liquid is completely cured (the time from foaming to completely curing is 24 hours), and then cutting to obtain the common low-temperature insensitive slow-resilience sponge.
The resilience time of the common low-temperature insensitive slow-resilience sponge is about 4s, the hand feeling is not hardened at the low temperature of-10 ℃ to 10 ℃, namely the common low-temperature insensitive slow-resilience sponge is insensitive at low temperature and has the density of 65g/m 3 。
EXAMPLE 5 Performance of Slow rebound sponge
The sponge materials prepared in the examples 1 to 4 are respectively detected according to the standard of GB/T24451-2009 slow rebound flexible polyurethane foam plastics, wherein the detection standard is based on the L-type standard in GB/T24451-2009 (L-type is filling pad, back cushion, pillow, neck pillow, other pillow pads, earplugs and the like and similar purposes).
TABLE 1 test results for the respective sponge materials
As can be seen from Table 1, the slow recovery sponges prepared in examples 1-3 meet the national standards and are acceptable products. Example 4 is a formulation of a common low temperature resistant slow rebound sponge, and it can be seen that the density of the slow rebound sponge prepared in examples 1-3 is less than half of that of the common low temperature resistant slow rebound sponge, but the high load capacity still has better advantages. The low-density slow-rebound sponge has softer hand feeling and can reduce the production cost.
Temperature sensitivity tests were performed on the slow rebound sponges produced in examples 1-4. As a result: the low temperature resistant slow rebound sponges of examples 1-3 have better low temperature resistance, and the table above also shows that the lower the temperature sensitivity index, the more pronounced the low temperature resistance.
Claims (4)
1. A preparation method of a high-bearing low-temperature insensitive slow-recovery sponge is characterized by comprising the following steps:
(1) Mixing 40 to 60 mass parts of polyether polyol A, 2 to 20 mass parts of polyether polyol B, 40 to 60 mass parts of polyether polyol C and 2 to 10 mass parts of polymer polyol D, adding 0.2 to 0.8 mass part of tertiary amine catalyst, 0.1 to 0.5 mass part of organic metal catalyst, 0.1 to 0.5 mass part of organic silicon oil and 2 to 4 mass parts of water, and stirring uniformly to obtain a white material;
(2) Pouring 35-45 parts by mass of toluene diisocyanate into the mixed white material, stirring, foaming and curing to obtain the high-load-bearing low-temperature insensitive slow-resilience sponge;
the polyether polyol A is ZS-350G, the polyether polyol B is ZS-3160, the polyether polyol C is ZS-8180, and the polymer polyol D is POP-720.
2. The method of claim 1, wherein the tertiary amine catalyst is a33.
3. The method according to claim 2, wherein the organometallic catalyst is dibutyltin dilaurate.
4. The preparation method according to claim 3, wherein the silicone oil is LR-1085.
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