CN109776852B - Composite sponge and preparation process thereof - Google Patents
Composite sponge and preparation process thereof Download PDFInfo
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- CN109776852B CN109776852B CN201810971209.0A CN201810971209A CN109776852B CN 109776852 B CN109776852 B CN 109776852B CN 201810971209 A CN201810971209 A CN 201810971209A CN 109776852 B CN109776852 B CN 109776852B
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Abstract
The invention discloses a composite sponge and a preparation process thereof, wherein the composite sponge comprises polyurethane sponge and polyvinyl alcohol sponge compounded in net-shaped gaps of the polyurethane sponge, and the density of the composite sponge is 45-150kg/m3(in dry product), the hardness of the composite sponge is more than 30HD, the volume of the polyvinyl alcohol sponge accounts for 60-80% of the total volume of the composite sponge, the volume of the polyurethane sponge accounts for 20-40% of the total volume of the composite sponge, the pore diameter of the polyurethane sponge is 3-30PPI, and the volume weight of the polyurethane sponge is 15-50kg/m3. The composite sponge has strong dirt scraping capability, does not damage the surface of a wiped object, has high water absorption and water retention characteristics, and has good cleaning effect.
Description
Technical Field
The invention belongs to the technical field of cleaning supplies, and particularly relates to a sponge for wiping.
Background
At present, most cleaning appliances for cleaning floors, kitchen ware and furniture in the market are provided, such as plant fiber cloth, metal wire balls and sponge, the metal wire balls are easy to prick and damage wiped objects, so that the cleaning appliances are not suitable for cleaning wood floors and furniture, the plant fiber cloth is soft, but the cleaning effect is poor, and dirt is easy to remain on the surface of the wiped objects. The sponge is usually made of polyurethane, and is a porous body with a net structure, and the Chinese patent publication No. CN102027030B discloses a coarse-pore polyurethane elastomer with the density of 70-300 g/L and 1-20 pores/cm, and the wiping body with the porous structure has strong dirt removing capability and cannot damage the wiped object.
However, the pores of the polyurethane sponge are open pores, and water and dirt on the surface of the object to be wiped cannot be adsorbed, resulting in poor cleaning ability.
In order to overcome the defects, the technical personnel in the field actively research and innovate so as to create the composite sponge with good scraping effect and strong water absorption capacity.
Disclosure of Invention
The invention mainly solves the technical problem of providing the composite sponge and the preparation process thereof, which have strong dirt scraping capability, no damage to the surface of a wiped object, high water absorption and water retention property and good cleaning effect.
In order to solve the technical problems, the invention adopts a technical scheme that: providing a composite sponge, wherein the composite sponge comprises polyurethane sponge and polyvinyl alcohol sponge compounded in the reticular gaps of the polyurethane sponge, and the density of the composite sponge is 45-150kg/m3(in dry form), hardness of the composite spongeMore than 30HD, the volume of the polyvinyl alcohol sponge accounts for 60-80% of the total volume of the composite sponge, and the volume of the polyurethane sponge accounts for 20-40% of the total volume of the composite sponge.
Further, the pore diameter of the polyurethane sponge is 3-30PPI, and the volume weight of the polyurethane sponge is 15-50kg/m3。
A composite sponge comprises the following raw materials in parts by volume: 70-85 parts of polyvinyl alcohol prepared liquid and 100 parts of polyurethane sponge;
the polyvinyl alcohol concoction liquid comprises the following raw materials in parts by mass: 1 part of polyvinyl alcohol, 5.15-32.25 parts of water, 0.1-1.5 parts of starch, a reactant and a catalyst;
the catalyst is a proper amount of inorganic acid with a certain concentration, and the mass part ratio of actual inorganic acid in the proper amount of inorganic acid to polyvinyl alcohol is 0.03-0.6: 1;
the reactant is proper amount of formaldehyde with certain concentration, and the mass part ratio of the actual formaldehyde in the proper amount of formaldehyde to the polyvinyl alcohol is 0.185-0.555: 1;
the pore diameter of the polyurethane sponge is 3-30PPI, and the volume weight of the polyurethane sponge is 15-50kg/m3。
Furthermore, the pigment and/or activated carbon particles, powder and/or plant particles and powder are also included.
Further, the inorganic acid is hydrochloric acid or sulfuric acid;
when the proper amount of the inorganic acid is hydrochloric acid with the concentration of 30% or sulfuric acid with the concentration of 40%, the proper amount of the inorganic acid is added by 0.1-1.5 parts by mass;
when the proper amount of the inorganic acid is hydrochloric acid with the concentration of 15% or sulfuric acid with the concentration of 20%, the proper amount of the inorganic acid is added in 0.2-3 parts by mass.
Further, when the proper amount of formaldehyde is formaldehyde with the concentration of 37%, the mass part of the proper amount of formaldehyde is 0.5-1.5 parts;
when the proper amount of formaldehyde is formaldehyde with the concentration of 18.5 percent, the proper amount of formaldehyde is added by 1 to 3 parts by mass.
The preparation process of the composite sponge comprises the following process steps:
s1: dissolving 1 part by mass of polyvinyl alcohol with 5-30 parts by mass of water, heating to 90-100 ℃, and fully dissolving the polyvinyl alcohol to prepare a polyvinyl alcohol dissolving solution;
s2: dissolving 0.1-1.5 parts by mass of starch with 0.15-2.25 parts by mass of water at 20-45 ℃ and mixing to obtain starch solution;
s3: mixing a polyvinyl alcohol solution and a starch solution for gelatinization reaction at the temperature of 55-100 ℃;
s4: adding a proper amount of reactants into the solution prepared in the step S3, mixing, adding a catalyst after mixing, fully stirring and mixing at the stirring speed of 20-200 revolutions per minute to prepare a polyvinyl alcohol concoction solution;
s5: placing the polyurethane sponge into a container, and pouring polyvinyl alcohol concoction liquid on the polyurethane sponge, or pouring the polyvinyl alcohol concoction liquid into the container, and placing the polyurethane sponge into the container; making the polyvinyl alcohol concoction liquid enter the gaps of the net structure of the polyurethane sponge;
s6: and (4) putting the semi-finished product prepared in the step S5 into an oven or a water tank, heating for an aldolization reaction at the temperature of 30-100 ℃, reacting for 2 hours-2 weeks, and taking out the polyvinyl alcohol concoction solution from the oven or the water tank when the polyvinyl alcohol concoction solution is in a non-sticky elastic solid state and water is formed on the surface of the sponge.
Further, the reaction formula of the acetalization reaction is as follows:
furthermore, in step S2, a colorant may be added to prepare starch solution to form different colors of composite sponge and/or activated carbon particles, powder and/or plant particles, powder added according to functional requirements.
In step S5, an external force is applied to push out the air in the polyurethane sponge so that the polyvinyl alcohol solution enters the voids of the net structure of the polyurethane sponge.
The invention has the beneficial effects that:
the composite sponge comprises polyurethane sponge and polyvinyl alcohol sponge compounded in the reticular gaps of the polyurethane sponge, has good resilience, and has roughness of the polyurethane sponge and high water absorbability and water retention of the polyvinyl alcohol sponge;
the hardness of the composite sponge is more than 30HD, the composite sponge has strong dirt scraping capability, does not damage the surface of a wiped object, and is provided with closed holes of polyvinyl alcohol for adsorbing water and dirt on the surface of the wiped object and improving the cleaning capability of the wiped object, thereby being particularly suitable for cleaning the ground;
the composite collodion is low in friction resistance, can be used for a wiping surface of the collodion of the mop, reduces the pushing resistance of the mop while scraping dirt, and is more labor-saving in use.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.
Example (b): the composite sponge comprises polyurethane sponge and polyvinyl alcohol sponge compounded in net-shaped gaps of the polyurethane sponge, and the density of the composite sponge is 45-150kg/m3(in dry products), the hardness of the composite sponge is greater than 30HD, the volume of the polyvinyl alcohol sponge accounts for 60-80% of the total volume of the composite sponge, and the volume of the polyurethane sponge accounts for 20-40% of the total volume of the composite sponge.
The pore diameter of the polyurethane sponge is 3-30PPI, and the volume weight of the polyurethane sponge is 15-50kg/m3。
A composite sponge comprises the following raw materials in parts by volume: 70-85 parts of polyvinyl alcohol prepared liquid and 100 parts of polyurethane sponge;
the polyvinyl alcohol concoction liquid comprises the following raw materials in parts by mass: 1 part of polyvinyl alcohol, 5.15-32.25 parts of water, 0.1-1.5 parts of starch, a reactant and a catalyst;
the catalyst is a proper amount of inorganic acid with a certain concentration, and the mass part ratio of actual inorganic acid in the proper amount of inorganic acid to polyvinyl alcohol is 0.03-0.6: 1;
the reactant is proper amount of formaldehyde with certain concentration, and the mass part ratio of the actual formaldehyde in the proper amount of formaldehyde to the polyvinyl alcohol is 0.185-0.555: 1;
the polyvinyl alcohol is polyvinyl alcohol resin;
the pore diameter of the polyurethane sponge is 3-30PPI, and the volume weight of the polyurethane sponge is 15-50kg/m3。
Also comprises pigment and/or activated carbon particles, powder and/or plant particles, powder.
The inorganic acid is hydrochloric acid or sulfuric acid;
when the proper amount of the inorganic acid is hydrochloric acid with the concentration of 30% or sulfuric acid with the concentration of 40%, the proper amount of the inorganic acid is added by 0.1-1.5 parts by mass;
when the proper amount of the inorganic acid is hydrochloric acid with the concentration of 15% or sulfuric acid with the concentration of 20%, the proper amount of the inorganic acid is added in 0.2-3 parts by mass.
If the concentration of the inorganic acid used is adjusted downward, the volume amount used is increased, and at this time, the amount of water used is subtracted by the increased amount, and the total mass of the inorganic acid is set to be practically constant.
When the proper amount of formaldehyde is formaldehyde with the concentration of 37%, the mass part of the proper amount of formaldehyde is 0.5-1.5 parts;
when the proper amount of formaldehyde is formaldehyde with the concentration of 18.5 percent, the proper amount of formaldehyde is added by 1 to 3 parts by mass.
The preparation process of the composite sponge comprises the following process steps:
s1: dissolving 1 part by mass of polyvinyl alcohol with 5-30 parts by mass of water, heating to 90-100 ℃, and fully dissolving the polyvinyl alcohol to prepare a polyvinyl alcohol dissolving solution;
s2: dissolving 0.1-1.5 parts by mass of starch with 0.15-2.25 parts by mass of water at 20-45 ℃ and mixing to obtain starch solution;
s3: mixing a polyvinyl alcohol solution and a starch solution for gelatinization reaction at the temperature of 55-100 ℃;
s4: adding a proper amount of reactants into the solution prepared in the step S3, mixing, adding a catalyst after mixing, fully stirring and mixing at the stirring speed of 20-200 revolutions per minute to prepare a polyvinyl alcohol concoction solution;
s5: placing the polyurethane sponge into a container, and pouring polyvinyl alcohol concoction liquid on the polyurethane sponge, or pouring the polyvinyl alcohol concoction liquid into the container, and placing the polyurethane sponge into the container; making the polyvinyl alcohol concoction liquid enter the gaps of the net structure of the polyurethane sponge;
s6: and (4) putting the semi-finished product prepared in the step S5 into an oven or a water tank, heating for an aldolization reaction at the temperature of 30-100 ℃, reacting for 2 hours-2 weeks, and taking out the polyvinyl alcohol concoction solution from the oven or the water tank when the polyvinyl alcohol concoction solution is in a non-sticky elastic solid state and water is formed on the surface of the sponge.
Preferably, the temperature of the acetalization reaction is 60 ℃ and the reaction time is 10 to 24 hours.
The difference in the total mass is the time required for the acetalization reaction, and is shorter or longer.
S7: and (5) cleaning the product obtained in the step (S6), removing starch and redundant formaldehyde and inorganic acid, cutting, removing mould and packaging.
The reaction formula of the acetalization reaction is as follows:
in step S2, a colorant may be added to prepare starch solution to form different color composite sponge and/or activated carbon particles, powder and/or plant particles, powder added according to functional requirements.
In step S5, an external force is applied to push out the air in the polyurethane sponge so that the polyvinyl alcohol solution enters the voids of the net structure of the polyurethane sponge.
The working principle of the invention is as follows: when the cleaning sponge is used, the cleaning surface of the composite sponge is attached to a wiped object to be cleaned, dirt is separated from the surface of the wiped object through the polyurethane collodion, and the polyvinyl alcohol sponge is used for adsorbing water and dirt on the surface of the wiped object, so that the cleaning sponge is particularly suitable for cleaning the ground.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications made by the present invention in the equivalent structure or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (8)
1. A composite sponge, characterized in that: the composite sponge comprises polyurethane sponge and polyvinyl alcohol sponge compounded in the reticular gaps of the polyurethane sponge, and the density of the composite sponge is 45-150kg/m3When the composite sponge is dried, the hardness of the composite sponge is more than 30HD, the volume of the polyvinyl alcohol sponge accounts for 60-80% of the total volume of the composite sponge, and the volume of the polyurethane sponge accounts for 20-40% of the total volume of the composite sponge;
the pore diameter of the polyurethane sponge is 3-30PPI, and the volume weight of the polyurethane sponge is 15-50kg/m3；
The composite sponge comprises the following raw materials in parts by volume: 70-85 parts of polyvinyl alcohol prepared liquid and 100 parts of polyurethane sponge;
the polyvinyl alcohol concoction liquid comprises the following raw materials in parts by mass: 1 part of polyvinyl alcohol, 5.15-32.25 parts of water, 0.1-1.5 parts of starch, a reactant and a catalyst;
the catalyst is a proper amount of inorganic acid with a certain concentration, and the mass part ratio of actual inorganic acid in the proper amount of inorganic acid to polyvinyl alcohol is 0.03-0.6: 1;
the reactant is proper amount of formaldehyde with certain concentration, and the mass part ratio of actual formaldehyde to polyvinyl alcohol in the proper amount of formaldehyde is 0.185-0.555: 1.
2. The composite sponge according to claim 1, wherein: also comprises pigment and/or activated carbon particles, powder and/or plant particles, powder.
3. The composite sponge according to claim 1, wherein: the inorganic acid is hydrochloric acid or sulfuric acid;
when the proper amount of the inorganic acid is hydrochloric acid with the concentration of 30% or sulfuric acid with the concentration of 40%, the proper amount of the inorganic acid is added by 0.1-1.5 parts by mass;
when the proper amount of the inorganic acid is hydrochloric acid with the concentration of 15% or sulfuric acid with the concentration of 20%, the proper amount of the inorganic acid is added in 0.2-3 parts by mass.
4. The composite sponge according to claim 1, wherein: when the proper amount of formaldehyde is formaldehyde with the concentration of 37%, the mass part of the proper amount of formaldehyde is 0.5-1.5 parts;
when the proper amount of formaldehyde is formaldehyde with the concentration of 18.5 percent, the proper amount of formaldehyde is added by 1 to 3 parts by mass.
5. The process for preparing a composite sponge according to claim 1, wherein: the method comprises the following process steps:
s1: dissolving 1 part by mass of polyvinyl alcohol with 5-30 parts by mass of water, heating to 90-100 ℃, and fully dissolving the polyvinyl alcohol to prepare a polyvinyl alcohol dissolving solution;
s2: dissolving 0.1-1.5 parts by mass of starch with 0.15-2.25 parts by mass of water at 20-45 ℃ and mixing to obtain starch solution;
s3: mixing a polyvinyl alcohol solution and a starch solution for gelatinization reaction at the temperature of 55-100 ℃;
s4: adding a proper amount of reactants into the solution prepared in the step S3, mixing, adding a catalyst after mixing, fully stirring and mixing at the stirring speed of 20-200 revolutions per minute to prepare a polyvinyl alcohol concoction solution;
s5: placing the polyurethane sponge into a container, and pouring polyvinyl alcohol concoction liquid on the polyurethane sponge, or pouring the polyvinyl alcohol concoction liquid into the container, and placing the polyurethane sponge into the container; making the polyvinyl alcohol concoction liquid enter the gaps of the net structure of the polyurethane sponge;
s6: and (4) putting the semi-finished product prepared in the step S5 into an oven or a water tank, heating for an aldolization reaction at the temperature of 30-100 ℃, reacting for 2 hours-2 weeks, and taking out the polyvinyl alcohol concoction solution from the oven or the water tank when the polyvinyl alcohol concoction solution is in a non-sticky elastic solid state and water is formed on the surface of the sponge.
6. The process for preparing a composite sponge according to claim 5, wherein: the reaction formula of the acetalization reaction is as follows:
7. the process for preparing a composite sponge according to claim 5, wherein: in step S2, a colorant may be added to prepare starch solution to form different color composite sponge and/or activated carbon particles, powder and/or plant particles, powder added according to functional requirements.
8. The process for preparing a composite sponge according to claim 5, wherein: in step S5, an external force is applied to push out the air in the polyurethane sponge so that the polyvinyl alcohol solution enters the voids of the net structure of the polyurethane sponge.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810971209.0A CN109776852B (en) | 2018-08-24 | 2018-08-24 | Composite sponge and preparation process thereof |
| TW107134073A TWI687477B (en) | 2018-08-24 | 2018-09-27 | Composite sponge and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810971209.0A CN109776852B (en) | 2018-08-24 | 2018-08-24 | Composite sponge and preparation process thereof |
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| CN109776852A CN109776852A (en) | 2019-05-21 |
| CN109776852B true CN109776852B (en) | 2021-10-29 |
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| CN201810971209.0A Active CN109776852B (en) | 2018-08-24 | 2018-08-24 | Composite sponge and preparation process thereof |
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| TW (1) | TWI687477B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020816A (en) * | 2010-11-16 | 2011-04-20 | 谭明宁 | Polyvinyl formal sponge material with uniform abscesses and rapid imbibition and preparation method thereof |
| CN103524648A (en) * | 2013-08-28 | 2014-01-22 | 华侨大学 | Foaming polyvinyl formal microbial carrier and preparation method thereof |
| CN103627015A (en) * | 2012-08-27 | 2014-03-12 | 苏州科技学院 | Preparation method of hydrophilic polymer-modified polyurethane foaming plastic carrier |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2489720Y (en) * | 2001-04-13 | 2002-05-08 | 郭文达 | Improved water absorption sponge |
| JP5703211B2 (en) * | 2009-04-01 | 2015-04-15 | オーミケンシ株式会社 | Sponge manufacturing method |
| CN101649066B (en) * | 2009-09-02 | 2012-02-29 | 黄建辉 | Preparation method of sponge formed by embedding of porous network material and polyvinyl alcohol porous foamed sponge |
| CN107184165A (en) * | 2016-03-14 | 2017-09-22 | 嘉兴捷顺旅游制品有限公司 | Collodion material and manufacture method for mop, the mop using the collodion material |
-
2018
- 2018-08-24 CN CN201810971209.0A patent/CN109776852B/en active Active
- 2018-09-27 TW TW107134073A patent/TWI687477B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020816A (en) * | 2010-11-16 | 2011-04-20 | 谭明宁 | Polyvinyl formal sponge material with uniform abscesses and rapid imbibition and preparation method thereof |
| CN103627015A (en) * | 2012-08-27 | 2014-03-12 | 苏州科技学院 | Preparation method of hydrophilic polymer-modified polyurethane foaming plastic carrier |
| CN103524648A (en) * | 2013-08-28 | 2014-01-22 | 华侨大学 | Foaming polyvinyl formal microbial carrier and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI687477B (en) | 2020-03-11 |
| TW202009269A (en) | 2020-03-01 |
| CN109776852A (en) | 2019-05-21 |
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