CN114539609A - Silica gel sponge material and preparation method thereof - Google Patents
Silica gel sponge material and preparation method thereof Download PDFInfo
- Publication number
- CN114539609A CN114539609A CN202210232973.2A CN202210232973A CN114539609A CN 114539609 A CN114539609 A CN 114539609A CN 202210232973 A CN202210232973 A CN 202210232973A CN 114539609 A CN114539609 A CN 114539609A
- Authority
- CN
- China
- Prior art keywords
- silica gel
- sponge
- gel solution
- polyurethane sponge
- polyurethane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 239000000741 silica gel Substances 0.000 title claims abstract description 92
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 92
- 239000000463 material Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229920002635 polyurethane Polymers 0.000 claims abstract description 62
- 239000004814 polyurethane Substances 0.000 claims abstract description 62
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 238000002791 soaking Methods 0.000 claims description 5
- 239000002671 adjuvant Substances 0.000 claims description 4
- 239000003242 anti bacterial agent Substances 0.000 claims description 4
- 239000002216 antistatic agent Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000000047 product Substances 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 4
- 239000012466 permeate Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 7
- 241000894006 Bacteria Species 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 229920005862 polyol Polymers 0.000 description 6
- 150000003077 polyols Chemical class 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 239000012948 isocyanate Substances 0.000 description 4
- 150000002513 isocyanates Chemical class 0.000 description 4
- ZXHZWRZAWJVPIC-UHFFFAOYSA-N 1,2-diisocyanatonaphthalene Chemical compound C1=CC=CC2=C(N=C=O)C(N=C=O)=CC=C21 ZXHZWRZAWJVPIC-UHFFFAOYSA-N 0.000 description 2
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical class N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 239000002683 reaction inhibitor Substances 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C08J9/36—After-treatment
- C08J9/40—Impregnation
- C08J9/42—Impregnation with macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/0011—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping plates or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a silica gel sponge material, which comprises polyurethane sponge and a silica gel solution, wherein a functional auxiliary agent is also added into the silica gel solution; a preparation method of a silica gel sponge comprises the following steps: s1, designing the size and thickness of the polyurethane sponge, the fluidity of the silica gel solution and the proportion of the functional auxiliary agent according to the product requirements; s2, cutting the polyurethane sponge into sheets with corresponding thickness by using cutting equipment according to design requirements; s3, preparing a silica gel solution with corresponding fluidity according to design requirements, and adding a functional auxiliary agent in a corresponding proportion into the silica gel solution; and S4, adding a silica gel solution to the polyurethane sponge sheet. According to the silica gel sponge material and the preparation method thereof, the silica gel solution is added on the polyurethane sponge, so that the polyurethane sponge has the function of increasing the tearing strength by times, the oxidation resistance and the high temperature resistance are improved, and the silica gel can inhibit the generation of bacteria.
Description
Technical Field
The invention relates to the technical field of silica gel sponge, in particular to a silica gel sponge material and a preparation method thereof.
Background
Sponge is a porous material with good water absorption and soft material, and is often used as a material for cleaning, buffering, protecting and other appliances.
Through retrieval, the invention patent with the Chinese patent number of 201611272202.7 discloses polyurethane for slow rebound sponge and a preparation method and application thereof, wherein the resin comprises a resin A component, a resin B1 component and a resin B2 component, and the resin A component comprises a polyol A, a cross-linking agent, a catalyst, a foaming agent and a foam stabilizer; the resin B1 comprises 1100 parts of isocyanate B, 110-40 parts of polyol B, 0.002-0.010 part of side reaction inhibitor, the resin B2 comprises 2100 parts of isocyanate B, 250-100 parts of polyol B, 0.002-0.010 part of side reaction inhibitor, the isocyanate B1 is diphenylmethane diisocyanate, carbodiimide-modified diphenylmethane diisocyanate, toluene diisocyanate or naphthalene diisocyanate, the polyol B1 is polyether triol, the isocyanate B2 is diphenylmethane diisocyanate, carbodiimide-modified diphenylmethane diisocyanate, toluene diisocyanate or naphthalene diisocyanate, and the polyol B2 is polyether polyol. The invention can prepare the slow-rebound polyurethane sponge with different hardness and has low cost.
The polyurethane sponge has the problems of easy oxidation, easy decomposition and aging in a humid environment, low toughness, easy tearing, easy bacteria generation and mildew generation, so the problem is solved by the silica gel sponge material and the preparation method thereof.
Disclosure of Invention
In order to solve the problems that polyurethane sponge is easy to oxidize, easy to decompose and age in a humid environment, low in toughness, easy to tear, and easy to grow bacteria and mildew, the invention aims to provide a silica gel sponge material and a preparation method thereof, and the silica gel sponge material has the effects of increasing the tearing strength by times, resisting oxidation, resisting high temperature and inhibiting the generation of bacteria.
The invention adopts the following technical scheme for realizing the technical purpose: a silica gel sponge material comprises polyurethane sponge and silica gel solution, wherein functional auxiliary agents are also added into the silica gel solution.
A preparation method of a silica gel sponge comprises the following steps:
s1, designing the size and thickness of the polyurethane sponge, the fluidity of the silica gel solution and the proportion of the functional auxiliary agent according to the product requirements;
s2, cutting the polyurethane sponge into sheets with corresponding thickness by using cutting equipment according to design requirements;
s3, preparing a silica gel solution with corresponding fluidity according to design requirements, and adding a functional auxiliary agent in a corresponding proportion into the silica gel solution;
s4, adding a silica gel solution on the polyurethane sponge sheet;
s5, extruding the excessive silica gel solution on the polyurethane sponge sheet by using a roller machine, and then placing the polyurethane sponge sheet on an oven conveyor belt;
s6, opening the oven, heating to 140 ℃ at 120-.
Preferably, the polyurethane sponge is soaked in the silica gel solution.
Preferably, the silica gel solution is sprayed on the surface of the polyurethane sponge.
Preferably, the polyurethane sponge sheet is soaked in a square groove filled with the silica gel solution and is completely immersed for 1-2 minutes until the silica gel solution permeates into pores of the sponge from outside to inside, and the soaked sponge is taken out.
Preferably, the polyurethane sponge sheets are integrally arranged on the working frame, the silica gel solution is sprayed on one surface of the polyurethane sponge through the atomizing nozzle, the polyurethane sponge is overturned on the other surface, and the silica gel solution is sprayed again until the surface of the polyurethane sponge is completely covered with the silica gel solution.
As an optimization, the functional adjuvants include: oxygen ion powder, an antibacterial agent, an anti-mildew agent and an antistatic agent.
As optimization, when the polyurethane sponge is baked on the conveying belt of the oven, the conveying belt drives the polyurethane sponge to continuously turn over;
preferably, the surface of the conveying belt is provided with meshes, and a blower is arranged below the conveying belt, so that air flow in the meshes from bottom to top passes through the meshes.
The invention has the following beneficial effects:
1. according to the silica gel sponge material and the preparation method thereof, the silica gel solution is added on the polyurethane sponge, so that the polyurethane sponge has the function of increasing the tearing strength by times, the oxidation resistance and the high temperature resistance are improved, and the silica gel material can inhibit the generation of bacteria.
2. According to the silica gel sponge material and the preparation method thereof, the polyurethane sponge is driven to overturn continuously by the conveying belt during baking, so that attached silica gel solution is prevented from generating flow marks, meanwhile, air flow from bottom to top in the holes passes through the holes, the flow marks are further eliminated, and the silica gel solution is ensured to be distributed uniformly and smoothly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A silica gel sponge material comprises polyurethane sponge and silica gel solution, wherein functional auxiliary agents are also added into the silica gel solution.
A preparation method of a silica gel sponge comprises the following steps:
s1, designing the size and thickness of the polyurethane sponge, the fluidity of the silica gel solution and the proportion of the functional auxiliary agent according to the product requirements;
s2, cutting the polyurethane sponge into sheets with corresponding thickness by using cutting equipment according to design requirements;
repeatedly asking for the cutting surface of the sheet material by using a dust collector to remove fine dust and slag and improve the adhesiveness of the silica gel solution;
s3, preparing a silica gel solution with corresponding fluidity according to design requirements, adding a functional auxiliary agent in a corresponding proportion into the silica gel solution, and uniformly mixing;
s4, soaking the polyurethane sponge sheet in a square groove filled with the silica gel solution, completely soaking for 1-2 minutes until the silica gel solution permeates into pores of the sponge from outside to inside, and taking out the soaked sponge;
s5, extruding redundant silica gel solution on the polyurethane sponge sheet by using a roller machine to ensure that the silica gel is uniformly distributed on the surface of the sponge, and then placing the sponge on an oven conveyor belt;
s6, opening the oven, heating to 120 ℃, opening the oven conveyer belt, baking the polyurethane sponge sheet, and enabling the silica gel solution to be completely shaped on the sponge.
The proportion of the silica gel solution and the functional auxiliary agent is 100: 3;
when the polyurethane sponge is baked on the conveyor belt of the oven, the conveyor belt drives the polyurethane sponge to continuously turn over, so that attached silica gel solution is prevented from generating flow marks;
the surface of the conveying belt is provided with meshes, and the air blower is arranged below the conveying belt, so that air flow from bottom to top passes through the meshes, and flow marks are further eliminated.
Example 2
A silica gel sponge material comprises polyurethane sponge and silica gel solution, wherein functional auxiliary agents are also added into the silica gel solution.
A preparation method of a silica gel sponge comprises the following steps:
s1, designing the size and thickness of the polyurethane sponge, the fluidity of the silica gel solution and the proportion of the functional auxiliary agent according to the product requirements;
s2, cutting the polyurethane sponge into sheets with corresponding thickness by using cutting equipment according to design requirements;
repeatedly asking for the cutting surface of the sheet material by using a dust collector to remove fine dust and slag and improve the adhesiveness of the silica gel solution;
s3, preparing a silica gel solution with corresponding fluidity according to design requirements, adding a functional auxiliary agent in a corresponding proportion into the silica gel solution, and uniformly mixing;
s4, arranging the polyurethane sponge sheets on a working frame, spraying the silica gel solution on one surface of the polyurethane sponge through an atomizing nozzle, turning over one surface of the polyurethane sponge, and spraying again until the surface of the polyurethane sponge is completely covered with the silica gel solution;
s5, extruding redundant silica gel solution on the polyurethane sponge sheet by using a roller machine to ensure that the silica gel is uniformly distributed on the surface of the sponge, and then placing the sponge on an oven conveyor belt;
and S6, opening the oven, heating to 140 ℃, opening the oven conveyer belt, and baking the polyurethane sponge sheet to enable the silica gel solution to be completely shaped on the sponge.
The proportion of the silica gel solution and the functional auxiliary agent is 100: 3;
when the polyurethane sponge is baked on the conveyor belt of the oven, the conveyor belt drives the polyurethane sponge to continuously turn over, so that attached silica gel solution is prevented from generating flow marks;
the surface of the conveying belt is provided with meshes, and the air blower is arranged below the conveying belt, so that air flow from bottom to top passes through the meshes, and flow marks are further eliminated.
Example 3
Functional adjuvants include: 3 parts of oxygen ion powder, 2 parts of an antibacterial agent, 2 parts of an anti-mildew agent and 1 part of an antistatic agent.
Example 4
Functional adjuvants include: 5 parts of oxygen ion powder, 3 parts of an antibacterial agent, 3 parts of an anti-mildew agent and 2 parts of an antistatic agent.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A silica gel sponge material is characterized in that: comprises polyurethane sponge and silica gel solution, wherein functional auxiliary agents are also added into the silica gel solution.
2. A preparation method of a silica gel sponge is characterized by comprising the following steps:
s1, designing the size and thickness of the polyurethane sponge, the fluidity of the silica gel solution and the proportion of the functional auxiliary agent according to the product requirements;
s2, cutting the polyurethane sponge into sheets with corresponding thickness by using cutting equipment according to design requirements;
s3, preparing a silica gel solution with corresponding fluidity according to design requirements, and adding a functional auxiliary agent in a corresponding proportion into the silica gel solution;
s4, adding a silica gel solution on the polyurethane sponge sheet;
s5, extruding the excessive silica gel solution on the polyurethane sponge sheet by using a roller machine, and then placing the polyurethane sponge sheet on an oven conveyor belt;
s6, opening the oven, heating to 140 ℃ at 120-.
3. The method for preparing the silica gel sponge as claimed in claim 2, which is characterized in that: and soaking the polyurethane sponge in the silica gel solution.
4. The method for preparing the silica gel sponge as claimed in claim 2, which is characterized in that: and spraying the silica gel solution on the surface of the polyurethane sponge.
5. The method for preparing a silica gel sponge according to claim 3, which is characterized in that: and soaking the polyurethane sponge sheet in a square groove filled with the silica gel solution, completely soaking for 1-2 minutes until the silica gel solution permeates into pores of the sponge from outside to inside, and taking out the soaked sponge.
6. The method for preparing the silica gel sponge as claimed in claim 4, wherein the method comprises the following steps: the polyurethane sponge sheets are integrally arranged on the working frame, the silica gel solution is sprayed on one surface of the polyurethane sponge through the atomizing nozzle, the polyurethane sponge is overturned on the other surface, and the silica gel solution is sprayed again until the surface of the polyurethane sponge is completely covered with the silica gel solution.
7. The method for preparing the silica gel sponge as claimed in claim 2, which is characterized in that: the functional adjuvants include: oxygen ion powder, an antibacterial agent, an anti-mildew agent and an antistatic agent.
8. The method for preparing the silica gel sponge as claimed in claim 2, which is characterized in that: when the polyurethane sponge is baked on the conveyor belt of the oven, the conveyor belt drives the polyurethane sponge to continuously turn over;
the surface of the conveying belt is provided with meshes, and air flow from bottom to top in the meshes passes through the meshes by installing an air blower below the conveying belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210232973.2A CN114539609A (en) | 2022-03-09 | 2022-03-09 | Silica gel sponge material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210232973.2A CN114539609A (en) | 2022-03-09 | 2022-03-09 | Silica gel sponge material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114539609A true CN114539609A (en) | 2022-05-27 |
Family
ID=81663571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210232973.2A Pending CN114539609A (en) | 2022-03-09 | 2022-03-09 | Silica gel sponge material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114539609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115403826A (en) * | 2022-09-30 | 2022-11-29 | 佛山市顺德区品睡海绵有限公司 | Silica gel sponge and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740217A (en) * | 2004-08-27 | 2006-03-01 | 株式会社东星硅树脂 | Silicon rubber foam and producing method and use thereof |
| US20060063846A1 (en) * | 2004-08-27 | 2006-03-23 | Dong Sung Silicone Co., Ltd. | Silicone sponge and preparation method and usage thereof |
| CN113861501A (en) * | 2021-09-30 | 2021-12-31 | 广州市鑫深家居有限公司 | Silica gel cotton pillow and preparation method thereof |
-
2022
- 2022-03-09 CN CN202210232973.2A patent/CN114539609A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740217A (en) * | 2004-08-27 | 2006-03-01 | 株式会社东星硅树脂 | Silicon rubber foam and producing method and use thereof |
| US20060063846A1 (en) * | 2004-08-27 | 2006-03-23 | Dong Sung Silicone Co., Ltd. | Silicone sponge and preparation method and usage thereof |
| CN113861501A (en) * | 2021-09-30 | 2021-12-31 | 广州市鑫深家居有限公司 | Silica gel cotton pillow and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115403826A (en) * | 2022-09-30 | 2022-11-29 | 佛山市顺德区品睡海绵有限公司 | Silica gel sponge and preparation method thereof |
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Application publication date: 20220527 |
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