CN111040108B - Preparation method of coarse-pore nontoxic cleaning sponge material - Google Patents
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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
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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
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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
- C08J9/06—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
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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
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
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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
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
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Abstract
The invention provides a preparation method of a coarse-pore nontoxic cleaning sponge material, belonging to the field of polymer synthesis. The preparation method of the coarse-pore nontoxic cleaning sponge material comprises the following steps: (1) preparing a polyurethane resin component: reacting polyether polyol with toluene-2, 4-diisocyanate to obtain a polyurethane resin component with the mass percentage of isocyanic acid radical of 7-10%; (2) preparing a foaming agent component: uniformly mixing water, an emulsifier ZS-8345 and a pore-forming agent to obtain a foaming agent component; (3) foaming: and uniformly mixing 100 parts by mass of the polyurethane resin component and 50-150 parts by mass of the foaming agent component, pouring into a mold, curing, and drying to obtain the sponge material. The coarse-pore sponge material prepared by the method has no harmful residues, excellent air permeability, no adverse effect on skin and environment, and environment-friendly preparation method, and can be applied to preparation of coarse-pore nontoxic cleaning cotton.
Description
Technical Field
The invention belongs to the field of polymer synthesis, and particularly relates to a preparation method of a coarse-pore non-toxic cleaning sponge material.
Background
At present, the coarse-pore sponge is mainly applied to filter screens and cleaning products and is processed by common open-pore soft foam through screening treatment. The gaps of the foam plastics removed from the coarse-pore sponge prepared by the method are more than 97 percent, and the coarse-pore sponge has excellent air permeability and good flexibility, but because the method adopts the common sponge which is subjected to reticulation treatment, other substances such as volatile catalyst residues or free TDI (toluene diisocyanate) are remained in the sponge, and the sponge can be used for common filter materials, but the application of the sponge in the cleaning fields of cleaning, bathing and the like cannot reach the health and environmental protection standards.
Disclosure of Invention
The invention aims to provide a preparation method of a coarse-pore nontoxic cleaning sponge material, the coarse-pore sponge material prepared by the method has no harmful residue, excellent air permeability, no adverse effect on skin and environment, and the preparation method is also environment-friendly.
The invention also aims to provide application of the sponge material in preparing coarse-pore nontoxic cleaning cotton.
The purpose of the invention is realized by adopting the following technical scheme:
a preparation method of a coarse-pore nontoxic cleaning sponge material comprises the following steps:
(1) preparing a polyurethane resin component: polyether polyols and process for their preparationToluene-2,4-DiisocyanateReacting to obtain a polyurethane resin component with the mass percentage of the isocyanic acid radical of 7-10%;
(2) preparing a foaming agent component: uniformly mixing water, an emulsifier ZS-8345 and a pore-forming agent to obtain a foaming agent component;
(3) foaming: and uniformly mixing 100 parts by mass of the polyurethane resin component and 50-150 parts by mass of the foaming agent component, pouring into a mold, curing, and drying to obtain the sponge material.
In the invention, the polyether polyol is a block polyether polyol of ethylene oxide and propylene oxide, the average functionality is 2.5-3.3, the number average molecular weight is 3000-5000, and the mass percentage of the ethylene oxide in the epoxide is 10-35%.
In the invention, the mass ratio of the deionized water, the emulsifier and the cell opener in the foaming agent component is 100: 0.5-2: 0.4 to 1.5.
In the invention, the emulsifier is ZS-8345 or a mixture of ZS-8345 and ZS-6110.
In the invention, the pore-forming agent is one of KF-28 and ZS-3602 or a mixture thereof.
In the present invention, the specific method for reacting the polyether polyol and the isocyanate in step (1) is as follows: dehydrating polyether polyol, adding diisocyanate at the temperature of below 50 ℃, and reacting for 1.5-2.5 hours at the temperature of 75-85 ℃ to obtain the polyurethane resin component.
The invention also provides application of the coarse-pore nontoxic cleaning sponge material prepared by the method in preparation of coarse-pore nontoxic cleaning cotton.
Compared with the prior art, the sponge material has the following advantages:
(1) the sponge material prepared by the method has the advantages of thick foam pores, excellent air permeability, easy dirt removal and the like during cleaning, repeated use and good cleaning effect.
(2) The sponge material is prepared by adopting a two-step method, firstly polyurethane resin is synthesized, then the polyurethane resin reacts with excessive water for foaming, diisocyanate, polyether emulsifier, pore-opening agent and other raw materials are adopted, other foaming agent and catalyst do not need to be added in the preparation process, so that free TDI (toluene diisocyanate) is not generated in the sponge material prepared by the method, TDA (toluene diamine) harmful to human bodies is not generated, and the prepared cleaning cotton has no toxic or side effect and no irritation to skin and is environment-friendly.
Detailed Description
The percentage in the invention is mass percentage.
The invention is further described with reference to the following examples, which, however, do not limit the practice of the invention.
Example 1
The polyether polyol A is an ethylene oxide-propylene oxide-ethylene oxide triblock polyether polyol. In the polyether polyol a, ethylene oxide accounted for 15% by mass of the total mass of the epoxides, and terminal ethylene oxide accounted for 15% by mass of the total mass of the epoxides. The polyether polyol A had a number average molecular weight of 4100 and an average functionality of 2.8. The preparation method of the ethylene oxide-propylene oxide-ethylene oxide triblock polyether polyol comprises the following steps: adding an initiator (a mixture of glycerol and dipropylene glycol) and a catalyst KOH into a reaction kettle, heating to 120 ℃, removing water under the condition that the vacuum degree is-0.095 MPa until the water content is less than 0.05%, closing the vacuum, sequentially adding ethylene oxide, propylene oxide and ethylene oxide into the reaction kettle in proportion, reacting at the temperature of 110-120 ℃ and the reaction pressure of less than 0.04MPa to obtain crude ether, adding acid for neutralization, and adding a refined magnesium silicate for adsorption and purification to obtain the ethylene oxide-propylene oxide-ethylene oxide triblock polyether polyol.
Polyurethane resin component: adding 100g of polyether polyol A into a reaction kettle, heating to 120 ℃, and heating to 120 DEG CDehydrating for 2 hours under the vacuum degree of-0.095 MPa, cooling to 40 ℃, and adding 25gToluene-2,4-DiisocyanateStirring for 30 minutes under normal pressure, heating to 80 ℃ (the heating time is 30min), and reacting for 2 hours at 80 ℃; and finally, cooling to 50 ℃ to obtain the polyurethane resin component, and sealing and storing. Through detection, the mass percentage content of-NCO (isocyanic acid radical) in the polyurethane resin component is 8.5%.
The foaming agent comprises the following components: 1.0g of emulsifier ZS-6110 (purchased from Jiangsu Kongshan chemical industry Co., Ltd.) and 0.5g of polyurethane foam opening agent KF-28 (purchased from Jiangsu Kongshan chemical industry Co., Ltd.) were weighed and added to 100g of distilled water, stirred uniformly to obtain a foaming agent component, and sealed for storage.
Weighing 100g of polyurethane resin component and 50g of foaming agent component, quickly and uniformly mixing, pouring into a mold, curing and drying to obtain the sponge material A. The sponge material A can be used for preparing coarse-pore cleaning cotton. The sponge material has no residual isocyanate through detection.
Example 2
The polyether polyol B is propylene oxide-ethylene oxide-propylene oxide triblock polyether polyol. For polyether polyol B, the ethylene oxide content in the epoxide was 30% by mass and the terminal propylene oxide content in the epoxide was 15% by mass. The polyether polyol B had a number average molecular weight of 4400 and an average functionality of 2.5. The starter used in the preparation of polyether polyol B was a mixture of glycerol and dipropylene glycol, prepared as in example 1.
Polyurethane resin component: adding 100g of polyether polyol B into a reaction kettle, heating to 120 ℃, dehydrating for 2 hours at the temperature of 120 ℃ and under the vacuum degree of-0.095 MPa, then cooling to 45 ℃, and adding 30g of polyether polyol BToluene-2,4-DiisocyanateStirring for 30 minutes under normal pressure, finally heating to 80 ℃ (the heating time is 20min), reacting for 2 hours at 80 ℃, cooling to 50 ℃ to obtain a polyurethane resin component, and sealing and storing. Through detection, the mass percentage content of-NCO in the polyurethane resin component is 9%.
The foaming agent comprises the following components: 1.5g of emulsifier ZS-1101 (purchased from Jiangsu clock shan chemical industry Co., Ltd.) and 1.2g of pore-forming agent ZS-3602 (purchased from Jiangsu clock shan chemical industry Co., Ltd.) are weighed and added into 100g of distilled water, and the mixture is stirred uniformly to obtain a foaming agent component which is sealed and stored.
Weighing 100g of polyurethane resin component and 60g of foaming agent component, quickly and uniformly mixing, pouring into a mold, curing and drying to obtain the sponge material B. The sponge material B can be used for preparing a coarse-pore polyurethane cleaning sponge. The sponge material has no residual isocyanate through detection.
Example 3
Polyether polyol C is a propylene oxide-ethylene oxide/propylene oxide block polyether polyol. For polyether polyol C, the ethylene oxide content of the epoxide was 10% by mass and the propylene oxide content of the second block epoxide was 20% by mass. The polyether polyol C had a number average molecular weight of 4500 and a functionality of 2.6. The preparation method of polyether polyol C is as follows: adding an initiator (a mixture of glycerol and dipropylene glycol) and a catalyst KOH into a reaction kettle, heating to 120 ℃, removing water under the condition that the vacuum degree is-0.095 MPa until the water content is less than 0.05%, closing the vacuum, adding ethylene oxide into the reaction kettle according to a certain proportion for reaction, and then adding a mixture of propylene oxide and ethylene oxide for reaction, wherein the reaction conditions are as follows:
110 ℃ and 120 ℃, and the reaction pressure is less than 0.04 MPa. And after the reaction is finished, obtaining crude ether, adding acid for neutralization, and adding a refining agent of magnesium silicate for adsorption and purification to obtain the ethylene oxide-propylene oxide-ethylene oxide triblock polyether polyol.
Polyurethane resin component: adding 100g of polyether polyol C into a reaction kettle, heating to 120 ℃, dehydrating for 2 hours at the temperature of 120 ℃ and under the vacuum degree of-0.095 MPa, then cooling to 48 ℃, and adding 25g of polyether polyol CToluene-2,4-DiisocyanateStirring for 30 minutes under normal pressure, finally heating to 80 ℃ (the heating time is 10min), reacting for 1 hour at 80 ℃, cooling to 50 ℃ to obtain a polyurethane resin component, and sealing and storing. Through detection, the mass percentage content of-NCO in the polyurethane resin component is 7.5%.
The foaming agent comprises the following components: 0.5g of emulsifier ZS-6140 (purchased from Jiangsu Konshan chemical Co., Ltd.), 0.3g of emulsifier ZS-1101 (purchased from Jiangsu Konshan chemical Co., Ltd.) and 0.4g of polyurethane foam opening agent KF-28 (purchased from Jiangsu Konshan chemical Co., Ltd.) were weighed into 100g of distilled water, stirred uniformly to obtain a foaming agent component, and sealed for storage.
Weighing 100g of polyurethane resin component and 150g of foaming agent component, quickly and uniformly mixing, pouring into a mold, curing and drying to obtain the sponge material C. The sponge material C can be used for preparing a coarse-pore polyurethane cleaning sponge. The sponge material has no residual isocyanate through detection.
Example 4
The polyurethane resin composition was the same as that of example 1 of the present invention.
The preparation method (anionic ring-opening polymerization) of the emulsifier ZS-8345 is as follows: adding 282g of initiator oleic acid and 2g of KOH into a reaction kettle, heating to 120 ℃, removing water under the conditions of 120 ℃ and vacuum degree of-0.095 MPa, closing the vacuum when the water content is less than 0.05 percent, continuously adding 718g of ethylene oxide into the reaction kettle, and reacting under the conditions of 110 ℃ and 120 ℃ and the pressure of less than or equal to 0.04 MPa. After the reaction is finished, cooling to 80 ℃, sucking 2.5g of glacial acetic acid in vacuum for neutralization, and stirring for half an hour; heating to 120 deg.C, removing low molecules at 120 deg.C and vacuum degree of-0.095 MPa, and cooling to obtain emulsifier ZS-8345.
The foaming agent comprises the following components: 1.0g of emulsifier ZS-8345, 1.0g of emulsifier ZS-6110 (purchased from Jiangsu Kongshan chemical industry Co., Ltd.) and 0.5g of polyurethane foam opening agent KF-28 (purchased from Jiangsu Kongshan chemical industry Co., Ltd.) are weighed and added into 100g of distilled water, and the mixture is stirred uniformly to obtain a foaming agent component which is sealed and stored.
Weighing 100g of polyurethane resin component and 50g of foaming agent component, quickly and uniformly mixing, pouring into a mold, curing and drying to obtain the sponge material D. The sponge material D can be used for preparing coarse-pore cleaning cotton. The sponge material has no residual isocyanate through detection.
Example 5
The polyurethane resin composition was the same as that of example 2 of the present invention.
The foaming agent comprises the following components: 1.5g of emulsifier ZS-8345 (the preparation method is shown in example 4) and 1.2g of cell opener ZS-3602 (purchased from Jiangsu clock mountain chemical Co., Ltd.) are weighed and added into 100g of distilled water, stirred uniformly to obtain a foaming agent component, and sealed and stored.
Weighing 100g of polyurethane resin component and 60g of foaming agent component, quickly and uniformly mixing, pouring into a mold, curing and drying to obtain the sponge material E. The sponge material E can be used for preparing a coarse-pore polyurethane cleaning sponge. The sponge material has no residual isocyanate through detection.
Comparative example
The coarse-pore sponge material F is prepared by a one-step method, and the specific method comprises the following steps: 106 parts by weight of polyether polyol A in example 1, 4 parts by weight of water and 10 parts by weight of dichloromethane are uniformly mixed on a stirrer, 58 parts by weight of Toluene Diisocyanate (TDI) is added, the mixture is stirred at a high speed for 4-8 s, the mixture is poured into a mold to be freely foamed to prepare reticulated polyurethane foam, and the reticulated polyurethane foam is cured and dried to obtain a coarse-pore sponge material F.
The properties of the sponge materials prepared in examples 1, 2, 3, 4, 5 were compared with those of the coarse sponge material F.
(1) Density, size of cell pores and open porosity
The detection method comprises the following steps: the sponge materials were compared for density, size of the cells and open porosity. The foam density is measured in accordance with GB/T6343-2009, the open cell content is measured in accordance with GB/T10799-2008, and the size of the cell pores is generally expressed in terms of the number of cells per linear length (25 mm). Specific results are shown in table 1.
TABLE 1 comparison of the Properties of the sponge materials
From Table 1, it can be seen that the polyurethane resin prepared by using polyether polyol A, B is matched with emulsifier ZS-8345 to prepare sponge, the opening rate is greater than 98%, and the size of sponge pores reaches more than 15 in the length of 25 mm.
In order to verify that the obtained sponge material can be widely applied to the field of cleaning (namely, the sponge has no toxic or side effect and no irritation), according to the medical device standards of the American society of American (ASTM), a cytotoxicity test and a skin sensitization test are further carried out on the sponge material, and the test is as follows:
(2) cytotoxicity assays
The detection method comprises the following steps: selecting sponge material A, D, E, F, cutting into 0.5cm × 2cm × 2cm slices, washing with distilled water and normal saline for 3 times respectively, autoclaving, adding 10ml DMEM cell culture solution into sponge per square centimeter, standing for 24 hr, and making into test solution. Digesting vigorous L-929 mouse fibroblast with digestive juice, adding appropriate amount of cell culture solution, and uniformly beating to 4 × 107The cell suspension of each L is ready for use. Taking 63 culture bottles, randomly dividing into a negative control group (13 bottles), a positive control group and four test object groups (10 bottles each), adding DMEM cell culture solution 4ml and cell suspension 1ml into each bottle, standing at 37 deg.C and containing 5% CO2Is cultured in a cell culture box for 24 hours. Removing culture solution after cell adherent growth, adding fresh DMEM cell culture solution into negative control group, adding DMEM cell culture solution containing 6.3% phenol into positive control group, adding DMEM cell culture solution containing 50% test solution into four test substance groups respectively, placing at 37 deg.C and containing 5% CO2The cells in the cell culture box are continuously cultured.
On the day of changing the culture solution, 3 bottles of the negative control group were taken, and on the 2 nd, 4 th and 7 th days after changing the culture solution, 3 bottles of each group were uniformly mixed and subjected to cytomorphology observation and cell counting. The morphology of the cells was observed with an inverted microscope, and the cell count was performed with a blood cell counting plate under the microscope, and the cell concentration was calculated according to the formula (1):
the relative cell proliferation degree RGR% was calculated according to the formula (2):
the test results are shown in tables 1 and 2.
TABLE 1 influence of polyurethane sponges on the concentration of L-929 cells
TABLE 2 Effect of polyurethane sponges on RGR of L-929 cells
As can be seen from Table 1, the number of cells in the positive control group had decreased significantly on day 2, dramatically decreased by 90% on day 4, and had all died on day 7. The cell numbers of the negative control group and the sponge material A, D, E in the three test object groups were not obviously reduced, but the cell number of the test object group of the sponge material F prepared by the one-step method was obviously reduced.
As can be seen from Table 2, the sponge materials A, D, E all belong to RGR classification standard grade 1 (75% -99%), and are judged to be qualified, i.e., have no toxic effect on cells; the sponge material F belongs to RGR classification standard grade 3 (30-50%), and is judged to be unqualified, namely, the sponge material has a large toxic effect on cells.
(3) Skin sensitization test
Firstly, the sponge material A, D, E, F is cut into pieces of 0.5cm × 2cm × 2cm in size, and the surface area is 3cm2Adding sterile pyrogen-free physiological saline 1mL, leaching at 60 deg.C for 8 hr to obtain 80mL leaching solution, filtering the leaching solution with analytical filter paper, and sterilizing with high pressure steam (115 deg.C, 30min) for use. An induction method combining intradermal injection and local patch is adopted to carry out sensitization test, and the experimental objects are 60 clean-grade guinea pigs with the body weight of 320 +/-5 g/mouse. The 60 guinea pigs were randomly divided into 6 groups (4 experimental groups and 2 control groups) of 10 animals each. The intracutaneous injection and the local patch in the experimental group adopt physiological saline leaching liquor of sponge materials A, D, E and F, the positive control group is 0.5 percent (volume percentage content) of formaldehyde solution, and the negative control group is physiological saline. The induction was performed by intradermal injection and topical patch, and the topical patch was used for 14 days to follow the challenge test. The excitation sites were observed 24h, 48h, 72h after patch removal. Record eachTime and site of challenge erythema and edema were observed and sensitization was assessed according to the criteria of tables 3 and 4. When the erythema and edema assessments were inconsistent, the rank was high.
TABLE 3 erythema grading Standard
| Erythema | Rank of |
| No erythema | 0 |
| Very slight erythema | 1 |
| Localized erythema | 2 |
| Moderate erythema | 3 |
| Severe erythema | 4 |
TABLE 4 edema grading Scale
| Edema (edema) | Rank of |
| Without edema | 0 |
| Minimal edema | 1 |
| Mild edema | 2 |
| Moderate edema (swelling, II) | 3 |
| Severe edema (bulge U, II, beyond exposure) | 4 |
Through the test processes of intradermal injection induction, local patch, excitation and the like, after patch objects are removed, the sponge material A, D, E test group and the normal saline control group are found to have no erythema and edema reaction at each excitation part in each time period, and the positive rate is 0; the sponge material F test group has moderate edema symptom, and the positive rate is 100%; while the positive control group showed strong edema reaction, the positive rate was 100%. Therefore, the skin reactions of the sponge A, the sponge D and the sponge E are evaluated to be 0 grade, and the sensitization test is qualified; the skin reaction of sponge F was grade 3 and the sensitization test was not qualified.
As can be seen from the above tests, the sponge material F prepared by the one-step method has certain toxic and side effects and irritation to the skin; the polyurethane sponges prepared by the methods of examples 4 and 5 have no toxic or side effect and no irritation to skin, and can be widely used for producing cleaning cotton.
Claims (3)
1. A preparation method of a coarse-pore nontoxic cleaning sponge material is characterized by comprising the following steps:
(1) preparing a polyurethane resin component: reacting polyether polyol with toluene-2, 4-diisocyanate to obtain a polyurethane resin component with the mass percentage of isocyanic acid radical of 7-10%;
(2) preparing a foaming agent component: uniformly mixing water, an emulsifier ZS-8345 and a pore-forming agent to obtain a foaming agent component;
(3) foaming: uniformly mixing 100 parts by mass of the polyurethane resin component and 50-150 parts by mass of the foaming agent component, pouring the mixture into a mold, curing and drying to obtain a sponge material;
the polyether polyol is block polyether polyol of ethylene oxide and propylene oxide, the average functionality is 2.5-3.3, the number average molecular weight is 3000-5000, and the mass percentage content of the ethylene oxide in the epoxide is 10% -35%; the mass ratio of the deionized water to the emulsifier to the cell opening agent in the foaming agent components is 100: 0.5-2: 0.4 to 1.5; the pore former is one or a mixture of KF-28 and ZS-3602;
the preparation method of the emulsifier ZS-8345 is as follows: adding 282g of initiator oleic acid and 2g of KOH into a reaction kettle, heating to 120 ℃, removing water under the conditions of 120 ℃ and vacuum degree of-0.095 MPa, closing the vacuum when the water content is less than 0.05 percent, continuously adding 718g of ethylene oxide into the reaction kettle, and reacting at the temperature of 110-; after the reaction is finished, cooling to 80 ℃, sucking 2.5g of glacial acetic acid in vacuum for neutralization, and stirring for half an hour; heating to 120 deg.C, removing low molecules at 120 deg.C and vacuum degree of-0.095 MPa, and cooling to obtain emulsifier ZS-8345.
2. The method of claim 1, wherein: the specific method for the reaction of polyether polyol and isocyanate in step (1) is as follows: dehydrating polyether polyol, adding diisocyanate at the temperature of below 50 ℃, and reacting for 1.5-2.5 hours at the temperature of 75-85 ℃ to obtain the polyurethane resin component.
3. Use of a coarse-pored non-toxic cleaning sponge material prepared by the method of claim 2 in the preparation of coarse-pored non-toxic cleaning cotton.
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| CN109456457A (en) * | 2018-11-19 | 2019-03-12 | 江苏钟山化工有限公司 | It is used to prepare the sponge material and preparation method thereof of color inhibition cotton pads |
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| KR102243756B1 (en) * | 2013-08-20 | 2021-04-23 | 바스프 에스이 | Improved rigid-polyurethane and rigid-polyisocyanurate foams based on fatty-acid-modified polyether polyols |
| CN106117488B (en) * | 2016-07-21 | 2019-04-12 | 山东一诺威聚氨酯股份有限公司 | Polyurethane moulding mattress composition and preparation method thereof |
| CN108017780B (en) * | 2016-11-04 | 2020-10-30 | 上海东大化学有限公司 | Catalyst, polyol, combined polyether and polyurethane foam and preparation method |
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| EP3178858A1 (en) * | 2015-12-09 | 2017-06-14 | Covestro Deutschland AG | Polyurethane foams based on polyether carbonate polyols |
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