CN110804312A - Foaming silica gel and preparation method and application thereof - Google Patents
Foaming silica gel and preparation method and application thereof Download PDFInfo
- Publication number
- CN110804312A CN110804312A CN201911184412.4A CN201911184412A CN110804312A CN 110804312 A CN110804312 A CN 110804312A CN 201911184412 A CN201911184412 A CN 201911184412A CN 110804312 A CN110804312 A CN 110804312A
- Authority
- CN
- China
- Prior art keywords
- polydimethylsiloxane
- foaming
- product
- silicone gel
- tackifier
- 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
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
- C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41C—CORSETS; BRASSIERES
- A41C3/00—Brassieres
- A41C3/12—Component parts
- A41C3/14—Stiffening or bust-forming inserts
- A41C3/144—Pads
- A41C3/146—Pads containing liquid or gel filling
-
- 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
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- 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
- C08J2203/22—Expandable microspheres, e.g. Expancel®
-
- 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
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
- C08J2383/07—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
-
- 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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
-
- 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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
- C08J2483/05—Polysiloxanes containing silicon bound to hydrogen
-
- 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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
- C08J2483/06—Polysiloxanes containing silicon bound to oxygen-containing groups
Abstract
The invention relates to the technical field of silicone gel, in particular to foaming silicone gel and a preparation method and application thereof. The invention discloses a foaming silica gel which is prepared from the following components in parts by weight: vinyl-terminated polydimethylsiloxane, methyl vinyl polydimethylsiloxane, expanded microspheres, first polydimethylsiloxane, second polydimethylsiloxane, third polydimethylsiloxane, hydrogen-containing polydimethylsiloxane, 1-ethynyl cyclohexanol, color paste and tackifier; the tackifier is prepared by the reaction of tetraethoxysilane, tetramethyldisiloxane and KH-560 under the condition of a catalyst. This foaming silica gel has adopted the tackifier of this application preparation, and this tackifier both ends contain epoxy group and ethoxy silicon active group, can form the chemical bond with foaming silica gel and TPU respectively for this foaming silica gel is good with TPU cohesiveness, and does not influence the physical properties and the outward appearance of foaming silica gel, can not take place the phenomenon of deciduate.
Description
Technical Field
The invention relates to the technical field of silicone gel, in particular to foaming silicone gel and a preparation method and application thereof.
Background
The living standard of people is randomly and continuously improved, the acceptance degree of new things is higher and higher, the pads of the female underwear worn at ordinary times are generally produced by polyurethane foamed sponge, in recent years, due to the characteristics of environmental protection, human body simulation reality and the like of the silicone gel, the bra pads and the hip pads of part of female underwear are made of the silicone gel, and after the silicone gel is applied, the specific gravity of the silicone gel is larger, the underwear is heavier, and the market demand of the foamed silicone gel is larger and larger.
However, the existing foaming silica gel has poor adhesion with a TPU film, and is easy to generate the phenomenon of demoulding.
Disclosure of Invention
The invention provides a foaming silicone gel and a preparation method and application thereof, and solves the problems that the existing foaming silicone gel is poor in adhesion with a TPU film and is easy to generate a demoulding phenomenon.
The specific technical scheme is as follows:
the invention provides foaming silica gel which is prepared from the following components in parts by weight:
vinyl-terminated polydimethylsiloxane, methyl vinyl polydimethylsiloxane, expanded microspheres, polydimethylsiloxane, hydrogen-containing polydimethylsiloxane, 1-ethynyl cyclohexanol, color paste and tackifier.
In the invention, the viscosity of the vinyl-terminated polydimethylsiloxane is 2000-100000 mpa.s, preferably 20000 mpa.s-80000 mpa.s, more preferably 20000mpa.s, 30000mpa.s, 60000mpa.s and 80000 mpa.s;
the viscosity of the methyl vinyl polydimethylsiloxane is 100-20000 mpa.s, preferably 350-500 mpa.s, more preferably 260mpa.s, 350mpa.s, 400mpa.s and 500 mpa.s;
the viscosity of the first polydimethylsiloxane is 50-1000mpa.s, wherein the viscosity of the first polydimethylsiloxane is 50-1000mpa.s, preferably 200-1000 mpa.s, more preferably 200-500 mpa.s, and further preferably 200-, 350-or 500 mpa.s; the viscosity of the second polydimethylsiloxane is 50-1000mpa.s, preferably 200-1000 mpa.s, more preferably 200-500 mpa.s, and further preferably 350 mpa.s; the viscosity of the third dimethiconol is 50-1000mpa.s, preferably 200-1000 mpa.s, more preferably 200-500 mpa.s, and further preferably 200-350 mpa.s, 500mpa.s
The viscosity of the hydrogen-containing polydimethylsiloxane is 30-200mpa.s, wherein the hydrogen content of the hydrogen-containing polydimethylsiloxane is 0.18-0.8%, preferably 0.18-0.36%, more preferably 0.18%, 0.25% and 0.36%.
The tackifier is prepared by reacting tetraethoxysilane, tetramethyldisiloxane and a silane coupling agent KH-560 under the condition of a catalyst.
In the present invention, the catalyst is selected from sulfuric acid, cation exchange resin or acid clay, preferably sulfuric acid; the tackifier is CH2OCHCH2O(CH2)3SI(OCH3)2OSI(CH3)2OSI(CH3)2OSI(OCH2CH3)3The two ends of the tackifier contain active groups, the active groups are hydrolyzed to form hydroxyl groups, the epoxy group at one end reacts with the hydroxyl group on the surface of TPU to form a chemical bond, the cohesiveness is good, the ethoxysilane at the other end has a similar structure with the silicone oil in the silicone gel, the compatibility is good, and the ethoxysilane and the silicone oil stably exist in a system and do not influence the physical properties and the appearance of the foaming silicone gel.
In the invention, the mass ratio of the tetraethoxysilane to the tetramethyldisiloxane to the KH-560 to the catalyst is (5-35): (0.5-20): (45-95): (0.01-2), preferably (5-25): (0.5-15): (60-95): (0.01-1), more preferably (5-15): (0.5-10): (75-95): (0.01-1).
In the invention, the reaction temperature for preparing the tackifier is 80-100 ℃, preferably 80 ℃, and the reaction time is 10-15 h, preferably 10 h.
In the present invention, the foamed silicone gel further comprises a coalescent inhibitor; the anti-agglomeration agent is selected from modified organic bentonite, diatomite or white carbon black, and is preferably organic bentonite. In the prior art, the method of industries such as lady underwear, patches, breast prosthesis and the like mainly comprises the step of adding materials such as expanded microspheres, glass beads and the like to reduce the density of products. The glass beads are gradually eliminated by the market due to large specific gravity. Expanded microspheres are the main trend. Although the density of the expanded microspheres is low, the toner in the foamed silica gel color paste prepared from the expanded microspheres is easy to agglomerate, so that the color is settled and layered. The invention uses the anti-aggregation agent to pretreat the color paste, so that the phenomenon of color paste sedimentation can not occur when the foaming silicon gel is prepared.
In the invention, the penetration degree of the foaming silicone gel is 15-52, the viscosity is 2700-5000 mpa.s, and the density is 0.31g/cm3～0.4g/cm3。
The invention also provides a preparation method of the foaming silica gel, which comprises the following steps:
step 1: mixing vinyl-terminated polydimethylsiloxane, first polydimethylsiloxane, methyl vinyl polydimethylsiloxane and expanded microspheres and then foaming to obtain a first product;
step 2: mixing the first product, the second polydimethylsiloxane and the catalyst to obtain a second product;
and step 3: mixing the first product, third polydimethylsiloxane, hydrogen-containing polydimethylsiloxane, 1-ethynyl cyclohexanol, color paste and tackifier to obtain a third product;
and 4, step 4: and mixing the second product with the third product to obtain the foaming silica gel.
In the step 1 of the invention, the foaming temperature is 150-180 ℃, preferably 150 ℃, and the foaming time is 50-100 min, preferably 50 min;
the mass ratio of the vinyl-terminated polydimethylsiloxane, the first polydimethylsiloxane, the methyl vinyl polydimethylsiloxane and the expanded microspheres is (25-50): (30-50): (20-30): (6-10), preferably 25: 45: 30: 6. 30: 40: 30: 10. 35: 35: 30: 10. 30: 50: 20: 8 and 50: 30: 20: 10; the mixing device is a high-speed dispersion machine, and the foaming is preferably placed in an oven.
The mixing device in step 2 of the present invention is preferably a high-speed dispersator; the mass ratio of the first product to the second polydimethylsiloxane to the catalyst is 100: (20-30): 0.5, preferably 100: 20: 0.5 and 100: 30: 0.5; the catalyst is selected from a complex of chloroplatinic acid and divinyltetramethyldisiloxane or a complex of chloroplatinic acid and tetravinyltetramethylcyclosiloxane.
In step 3 of the invention, the mass ratio of the first product, the third polydimethylsiloxane, the hydrogen-containing polydimethylsiloxane, the color paste, the tackifier and the 1-ethynylcyclohexanol is 100: 10: 10: 1: 1: (0.15-0.25).
In step 3 of the invention, the following components are also added: a coalescent inhibitor; the mass ratio of the anti-agglomeration agent to the color paste is (0.1-1.5): 1
In step 4 of the present invention, the mass ratio of the first product to the second product is 1: 1.
the invention also provides application of the foaming silica gel in preparing underwear gaskets, which comprises the following steps:
and (3) pouring the foaming silica gel into a TPU bag, and molding to obtain the underwear gasket.
Preferably, the molding temperature is 150-160 ℃, preferably 150 ℃, and the time is 50-100 min, preferably 50 min.
According to the technical scheme, the invention has the following advantages:
the invention provides a foaming silicone gel, which adopts the tackifier prepared by the method, wherein two ends of the tackifier contain epoxy groups and ethoxy silicon active groups, and the epoxy groups and the ethoxy silicon active groups can respectively form chemical bonds with the foaming silicone gel and TPU (thermoplastic polyurethane), so that the foaming silicone gel and the TPU have good cohesiveness, the physical properties and the appearance of the foaming silicone gel are not influenced, and the phenomenon of demoulding is avoided.
Detailed Description
The embodiment of the invention provides a foaming silicone gel and a preparation method and application thereof, which are used for solving the problems that the existing foaming silicone gel is poor in adhesion with a TPU film and is easy to demould.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it should be apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all 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
This example is the preparation of a tackifier
And (2) mixing the following components in percentage by mass: 5: 75: 0.05 of tetraethoxysilane, tetramethyldisiloxane, KH-560 and sulfuric acid react for 10 hours under the condition of 80 ℃ to obtain the tackifier.
Example 2
(1) Adding 50 parts of vinyl-terminated polydimethylsiloxane with the viscosity of 20000mpa.s, 30 parts of polydimethylsiloxane with the viscosity of 500mpa.s and 20 parts of methyl vinyl polydimethylsiloxane with the viscosity of 350mpa.s into a kneader, uniformly stirring 10 parts of expanded microspheres, placing the mixture into an oven, foaming at the temperature of 150 ℃/30min, and then placing the mixture into air to naturally cool to obtain the base adhesive.
(2) 100 parts of the base rubber is added with 20 parts of polydimethylsiloxane with the viscosity of 350mpa.s and 0.5 part of complex compound of chloroplatinic acid and divinyl tetramethyl disiloxane (the platinum content is 2000PPM) and stirred evenly in a high-speed dispersion machine to obtain the agent A.
(3) 100 parts of the base adhesive, 12 parts of polydimethylsiloxane with the viscosity of 350mpa.s, 8 parts of hydrogen-containing polydimethylsiloxane (0.36 percent of hydrogen content), 1 part of pretreated color paste (organic bentonite and color paste in a mass ratio of 0.05:1), 1 part of tackifier and 0.15 part of 1-ethynyl cyclohexanol are uniformly stirred in a high-speed dispersion machine to obtain the B agent.
(4) Mixing the agent A and the agent B according to the mass ratio of 1:1, and discharging bubbles to obtain the foaming silica gel.
The foamed silicone gel of this example had a penetration of 15, a viscosity of 5000mPa. s, and a density of 0.31g/cm3。
The foaming silicone gel of the embodiment is injected into a TPU bag by a needle cylinder for 150 ℃/50min for molding, the color distribution is uniform, and the layering phenomenon is avoided; the bag is repeatedly rubbed by hands, and the foaming silica gel and the TPU are not stripped.
Example 3
(1) Adding 30 parts of vinyl-terminated polydimethylsiloxane with the viscosity of 20000mpa.s, 50 parts of polydimethylsiloxane with the viscosity of 350mpa.s and 20 parts of methyl vinyl polydimethylsiloxane with the viscosity of 400mpa.s into a kneader, uniformly stirring 8 parts of expanded microspheres, placing the mixture into an oven, foaming at the temperature of 150 ℃/30min, and then placing the mixture into air to naturally cool to obtain the base adhesive.
(2) 100 parts of the base rubber is added with 30 parts of polydimethylsiloxane with the viscosity of 350mpa.s and 0.5 part of complex compound of chloroplatinic acid and divinyl tetramethyl disiloxane (the platinum content is 2000PPM) and stirred evenly in a high-speed dispersion machine to obtain the agent A.
(3) 100 parts of the base adhesive, 25 parts of polydimethylsiloxane with the viscosity of 350mpa.s, 5 parts of hydrogen-containing polydimethylsiloxane (with the hydrogen content of 0.36 percent), 1 part of pretreated color paste (organic bentonite and color paste in a mass ratio of 0.1:1), 1 part of tackifier and 0.15 part of 1-ethynyl cyclohexanol are uniformly stirred in a high-speed dispersion machine to obtain the B agent.
(4) Mixing the agent A and the agent B according to the mass ratio of 1:1, and discharging bubbles to obtain the foaming silica gel.
The foaming silica gel of the example has a penetration of 35, a viscosity of 3200mpa.s and a density of 0.36g/cm3。
The foaming silicone gel of the embodiment is injected into a TPU bag by a needle cylinder for 150 ℃/50min for molding, the color distribution is uniform, and the layering phenomenon is avoided; the bag is repeatedly rubbed by hands, and the silicone gel and the TPU are not stripped.
Example 4
(1) Adding 35 parts of vinyl-terminated polydimethylsiloxane with the viscosity of 60000mpa.s, 35 parts of polydimethylsiloxane with the viscosity of 350mpa.s and 30 parts of methyl vinyl polydimethylsiloxane with the viscosity of 260mpa.s into a kneader, uniformly stirring 10 parts of expanded microspheres, placing the mixture into an oven, foaming at the temperature of 150 ℃/30min, and then placing the mixture into air to naturally cool to obtain the base adhesive.
(2) 100 parts of the base rubber is added with 20 parts of polydimethylsiloxane with the viscosity of 350mpa.s and 0.5 part of complex compound of chloroplatinic acid and divinyl tetramethyl disiloxane (the platinum content is 2000PPM) and stirred evenly in a high-speed dispersion machine to obtain the agent A.
(3) 100 parts of the base adhesive, 10 parts of polydimethylsiloxane with the viscosity of 350mpa.s, 10 parts of hydrogen-containing polydimethylsiloxane (0.25 percent of hydrogen content), 1 part of pretreated color paste (organic bentonite and color paste in a mass ratio of 0.15:1), 1 part of tackifier and 0.2 part of 1-ethynyl cyclohexanol are uniformly stirred in a high-speed dispersion machine to obtain the B agent.
(4) Mixing the agent A and the agent B according to the mass ratio of 1:1, and discharging bubbles to obtain the foaming silica gel.
The foaming silica gel has penetration of 42, viscosity of 4300mpa.s and density of 0.31g/cm3The foaming silica gel is injected into a TPU bag by a needle cylinder for 150 ℃/50min for molding, the color distribution is uniform, and the layering phenomenon is avoided; the bag is repeatedly rubbed by hands, and the silicone gel and the TPU are not stripped.
Example 5
(1) Adding 30 parts of vinyl-terminated polydimethylsiloxane with the viscosity of 30000mpa.s, 40 parts of polydimethylsiloxane with the viscosity of 200mpa.s and 30 parts of methyl vinyl polydimethylsiloxane with the viscosity of 500mpa.s into a kneader, uniformly stirring 10 parts of expanded microspheres, placing the mixture into an oven, foaming at the temperature of 150 ℃/30min, and then placing the mixture into air to naturally cool to obtain the base adhesive.
(2) 100 parts of the base rubber is added with 20 parts of polydimethylsiloxane with the viscosity of 200mpa.s and 0.5 part of complex compound of chloroplatinic acid and divinyl tetramethyl disiloxane (the platinum content is 2000PPM) and stirred evenly in a high-speed dispersion machine to obtain the agent A.
(3) 100 parts of the base adhesive, 10 parts of polydimethylsiloxane with the viscosity of 200mpa.s, 10 parts of hydrogen-containing polydimethylsiloxane (0.25 percent of hydrogen content), 1 part of pretreated color paste (organic bentonite and color paste in a mass ratio of 0.2:1), 1 part of tackifier and 0.15 part of 1-ethynyl cyclohexanol are uniformly stirred in a high-speed dispersion machine to obtain the B agent.
(4) Mixing the agent A and the agent B according to the mass ratio of 1:1, and discharging bubbles to obtain the foaming silica gel.
The foamed silicone gel of this example had a penetration of 22, a viscosity of 2700mpa.s and a density of 0.32g/cm3。
The foaming silicone gel of the embodiment is injected into a TPU bag by a needle cylinder for 150 ℃/50min for molding, the color distribution is uniform, and the layering phenomenon is avoided; the bag is repeatedly rubbed by hands, and the silicone gel and the TPU are not stripped.
Example 6
(1) Adding 25 parts of vinyl-terminated polydimethylsiloxane with the viscosity of 80000mpa.s, 45 parts of polydimethylsiloxane with the viscosity of 350mpa.s and 30 parts of methyl vinyl polydimethylsiloxane with the viscosity of 500mpa.s into a kneader, uniformly stirring 6 parts of expanded microspheres, placing the mixture into an oven, foaming at the temperature of 150 ℃/30min, and then placing the mixture into air to naturally cool to obtain the base adhesive.
(2) 100 parts of the base rubber is added with 20 parts of polydimethylsiloxane with the viscosity of 350mpa.s and 0.5 part of complex compound of chloroplatinic acid and divinyl tetramethyl disiloxane (the platinum content is 2000PPM) and stirred evenly in a high-speed dispersion machine to obtain the agent A.
(3) 100 parts of the base adhesive, 10 parts of polydimethylsiloxane with the viscosity of 350mpa.s, 10 parts of hydrogen-containing polydimethylsiloxane (0.18 percent of hydrogen content), 1 part of pretreated color paste (organic bentonite and color paste in a mass ratio of 0.25:1), 1 part of tackifier and 0.25 part of 1-ethynyl cyclohexanol are uniformly stirred in a high-speed dispersion machine to obtain the B agent.
(4) Mixing the agent A and the agent B according to the mass ratio of 1:1, and discharging bubbles to obtain the foaming silica gel.
The foamed silicone gel of this example had a penetration of 52, a viscosity of 5000mPa.s, and a density of 0.4g/cm3。
The foaming silicone gel of the embodiment is injected into a TPU bag by a needle cylinder for 150 ℃/50min for molding, the color distribution is uniform, and the layering phenomenon is avoided; the bag is repeatedly rubbed by hands, and the silicone gel and the TPU are not stripped.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A foaming silicone gel, characterized by being made from the following components:
vinyl-terminated polydimethylsiloxane, methyl vinyl polydimethylsiloxane, expanded microspheres, polydimethylsiloxane, hydrogen-containing polydimethylsiloxane, 1-ethynyl cyclohexanol, color paste and tackifier;
the tackifier is prepared by reacting tetraethoxysilane, tetramethyldisiloxane and KH-560 under the condition of a catalyst.
2. The foamed silicone gel of claim 1, wherein the weight ratio of the tetraethoxysilane, the tetramethyldisiloxane, the KH-560 and the catalyst is (5-35): (0.5-20): (45-95): (0.01-2).
3. The foamed silicone gel according to claim 1, wherein the reaction temperature is 80 ℃ to 100 ℃ and the reaction time is 10h to 12 h;
the catalyst is selected from sulfuric acid, cation exchange resin or acid clay.
4. The foamed silicone gel of claim 1, wherein said vinyl terminated polydimethylsiloxane has a viscosity of 2000 to 100000 mpa.s;
the viscosity of the methyl vinyl polydimethylsiloxane is 100-20000 mpa.s;
the viscosity of the polydimethylsiloxane is 50-1000 mpa.s;
the viscosity of the hydrogenous polydimethylsiloxane is 30-200 mpa.s.
5. The foamed silicone gel of claim 1, further comprising: a coalescent inhibitor;
the anti-agglomeration agent is selected from modified organic bentonite, diatomite or white carbon black.
6. A process for the preparation of a foaming silicone gel according to any of claims 1 to 5, characterized in that it comprises the following steps:
step 1: mixing vinyl-terminated polydimethylsiloxane, first polydimethylsiloxane, methyl vinyl polydimethylsiloxane and expanded microspheres and then foaming to obtain a first product;
step 2: mixing the first product, the second polydimethylsiloxane and the catalyst to obtain a second product;
and step 3: mixing the first product, third polydimethylsiloxane, hydrogen-containing polydimethylsiloxane, 1-ethynyl cyclohexanol, color paste and tackifier to obtain a third product;
and 4, step 4: mixing the second product with the third product to obtain foamed silicone gel;
the polydimethylsiloxane comprises: a first polydimethylsiloxane, a second polydimethylsiloxane, and a third polydimethylsiloxane.
7. The method according to claim 6, wherein the mass ratio of the vinyl-terminated polydimethylsiloxane, the first polydimethylsiloxane, the methyl vinyl polydimethylsiloxane and the expanded microspheres is (25-50): (30-50): (20-30): (6-10);
the foaming temperature is 150-180 ℃, and the foaming time is 50-100 min.
8. The production method according to claim 6, wherein the mass ratio of the first product, the second polydimethylsiloxane and the catalyst is 100: (20-30): 0.5;
the mass ratio of the first product, the third polydimethylsiloxane, the hydrogen-containing polydimethylsiloxane, the color paste, the tackifier and the 1-ethynylcyclohexanol is 100: 10: 10: 1: 1: (0.15 to 0.25);
the mass ratio of the first product to the second product is 1: 1.
9. the method according to claim 6, wherein the catalyst is selected from a complex of chloroplatinic acid with divinyltetramethyldisiloxane and a complex of chloroplatinic acid with tetravinyltetramethylcyclosiloxane.
10. Use of the foamed silicone gel of any one of claims 1 to 5 in the preparation of an undergarment gasket comprising the steps of:
and (3) pouring the foaming silica gel into a TPU bag, and molding to obtain the underwear gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911184412.4A CN110804312A (en) | 2019-11-27 | 2019-11-27 | Foaming silica gel and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911184412.4A CN110804312A (en) | 2019-11-27 | 2019-11-27 | Foaming silica gel and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110804312A true CN110804312A (en) | 2020-02-18 |
Family
ID=69491719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911184412.4A Pending CN110804312A (en) | 2019-11-27 | 2019-11-27 | Foaming silica gel and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110804312A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08322863A (en) * | 1995-06-01 | 1996-12-10 | Siegel:Kk | Pad for shaping style and its production |
| US20110144748A1 (en) * | 2009-12-15 | 2011-06-16 | Chang Gung University | Structure of breast augmentation pocket |
| CN103223191A (en) * | 2013-04-28 | 2013-07-31 | 苏州美山子制衣有限公司 | Silicone gel composition for manufacturing breast prosthesis, and preparation method thereof |
| CN103756330A (en) * | 2013-12-26 | 2014-04-30 | 惠州市永卓科技有限公司 | Special silica gel for nubra and preparation method thereof |
| CN104098916A (en) * | 2014-07-29 | 2014-10-15 | 东莞兆舜有机硅新材料科技有限公司 | Addition type ultra-soft silicone rubber, as well as preparation method and application thereof |
| CN104892942A (en) * | 2015-06-04 | 2015-09-09 | 成都拓利化工实业有限公司 | Tackifier for addition-type organic silicon rubber and preparation method thereof |
| CN106995610A (en) * | 2016-01-26 | 2017-08-01 | 东莞市希贝实业有限公司 | A kind of foamed silastic material and preparation method thereof |
| CN107619656A (en) * | 2017-09-14 | 2018-01-23 | 佛山市天宝利硅工程科技有限公司 | A kind of method for packing of organic silicon rubber adhesive and electric-device housing |
| CN108129845A (en) * | 2017-12-23 | 2018-06-08 | 广东新翔星科技股份有限公司 | A kind of preparation method of additional organosilicon packaging plastic adhesion promoters |
| CN109476916A (en) * | 2016-03-17 | 2019-03-15 | 埃肯有机硅法国简易股份公司 | Skin adhesion silicon gel |
-
2019
- 2019-11-27 CN CN201911184412.4A patent/CN110804312A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08322863A (en) * | 1995-06-01 | 1996-12-10 | Siegel:Kk | Pad for shaping style and its production |
| US20110144748A1 (en) * | 2009-12-15 | 2011-06-16 | Chang Gung University | Structure of breast augmentation pocket |
| CN103223191A (en) * | 2013-04-28 | 2013-07-31 | 苏州美山子制衣有限公司 | Silicone gel composition for manufacturing breast prosthesis, and preparation method thereof |
| CN103756330A (en) * | 2013-12-26 | 2014-04-30 | 惠州市永卓科技有限公司 | Special silica gel for nubra and preparation method thereof |
| CN104098916A (en) * | 2014-07-29 | 2014-10-15 | 东莞兆舜有机硅新材料科技有限公司 | Addition type ultra-soft silicone rubber, as well as preparation method and application thereof |
| CN104892942A (en) * | 2015-06-04 | 2015-09-09 | 成都拓利化工实业有限公司 | Tackifier for addition-type organic silicon rubber and preparation method thereof |
| CN106995610A (en) * | 2016-01-26 | 2017-08-01 | 东莞市希贝实业有限公司 | A kind of foamed silastic material and preparation method thereof |
| CN109476916A (en) * | 2016-03-17 | 2019-03-15 | 埃肯有机硅法国简易股份公司 | Skin adhesion silicon gel |
| CN107619656A (en) * | 2017-09-14 | 2018-01-23 | 佛山市天宝利硅工程科技有限公司 | A kind of method for packing of organic silicon rubber adhesive and electric-device housing |
| CN108129845A (en) * | 2017-12-23 | 2018-06-08 | 广东新翔星科技股份有限公司 | A kind of preparation method of additional organosilicon packaging plastic adhesion promoters |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103865475B (en) | A kind of transparent organic silicon gel caking agent | |
| CN104152104B (en) | A kind of autohension organic silicon pressure-sensitive adhesive and preparation method thereof | |
| CN102174309B (en) | Solvent-free organic silicon pressure-sensitive adhesive and preparation method thereof | |
| CN110305486B (en) | Organic silicon gel and preparation method thereof | |
| CN101560372B (en) | Method for preparing one-step molding organic silicon self-adhesive pressure sensitive adhesive | |
| CN102876249B (en) | Preparation method of peelable type organosilicon pressure-sensitive adhesive | |
| CN108823340B (en) | Leather silicone rubber polymer synthetic leather and manufacturing method thereof | |
| CN105238061A (en) | Foaming silicone rubber compound, low-density silicone rubber sponge and preparing method of low-density silicone rubber sponge | |
| CN110272627B (en) | High-refractive-index organic silicon gel and preparation method thereof | |
| CN105238070A (en) | One-component addition type liquid silicone rubber and preparation method thereof | |
| CN113185947B (en) | Mixed crosslinking system two-component hollow sealant | |
| CN104449552A (en) | Adhesive mono-component addition silicone rubber adhesive and preparation method thereof | |
| CN112694865A (en) | Single-component thermosetting organic silicon adhesive for adhering electric kettle and preparation method thereof | |
| CN103173178A (en) | Organic silicon modified polyether adhesive and preparation method thereof | |
| CN104531003A (en) | Borate tackifier for addition type silicone rubber, and preparation method and application thereof | |
| CN110804312A (en) | Foaming silica gel and preparation method and application thereof | |
| CN105368068A (en) | High-temperature-resistant, high-breakdown-voltage and filler-free organic silicone rubber for sleeve | |
| CN105482758A (en) | Preparing method of silane-modified polyurethane sealant | |
| CN107652943A (en) | A kind of ultraviolet resistance high-low temperature resistant organosilicon adhesive and preparation method thereof | |
| CN115109561A (en) | Organic silicon gel and preparation method applying IGBT packaging | |
| CN108410417A (en) | A kind of selectivity coheres liquid-state silicon gel and preparation method thereof | |
| CN106626639A (en) | Bio-robot skin and manufacturing method thereof | |
| CN112898783A (en) | Double-component transfer printing silica gel and preparation method thereof | |
| CN112300755B (en) | Thermosetting organic silicon adhesive for full lamination of oversized liquid crystal display and application thereof | |
| CN116769438A (en) | Preparation method and application of organic silicon glue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200218 |
|
| RJ01 | Rejection of invention patent application after publication |