CN112708279B - Silica gel sealing process of waterproof chain - Google Patents
Silica gel sealing process of waterproof chain Download PDFInfo
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- CN112708279B CN112708279B CN202011597386.0A CN202011597386A CN112708279B CN 112708279 B CN112708279 B CN 112708279B CN 202011597386 A CN202011597386 A CN 202011597386A CN 112708279 B CN112708279 B CN 112708279B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions 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; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/24—Details
- A44B19/32—Means for making slide fasteners gas or watertight
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention relates to the technical field of chains, in particular to a silica gel sealing process for a waterproof chain, wherein each chain tooth comprises tooth roots and tooth heads, the tooth heads are meshed with each other, a first resin body is filled in a hollow groove between the tooth roots, second resin bodies are compounded on the upper surface and the lower surface of each of the tooth roots and the first resin, and the injection molding sealing process comprises the following steps: and (4) carrying out injection molding on the zipper belt by taking the silica gel as injection molding resin. According to the invention, through an injection molding process, the resin body is filled in the non-meshing part of the sprocket, namely the empty groove between the tooth roots, so as to achieve the effect of water seepage prevention, and meanwhile, in order to improve the embedding stability of the resin body and further improve the waterproofness, the resin body is integrally filled on the upper surface and the lower surface of the tooth roots through the injection molding process to form complete and continuous silica gel which completely covers the tooth roots, so that the tooth roots can be used as positioning columns to fix the positions of the silica gel, the silica gel is not easy to dislocate or fall off, the structural stability is improved, and the waterproofness is also improved.
Description
Technical Field
The invention relates to the technical field of chains, in particular to a silica gel sealing process of a waterproof chain.
Background
Zippers (zippers), which are connectors for uniting or separating articles by means of a continuous arrangement of zipper teeth, are now widely used in clothing, bags, tents, etc. Due to the nature of the inter-engaging elements, even when the slide fastener is in a closed state, a large gap is formed between the elements, and thus the waterproof function cannot be achieved. At present, a waterproof structure for a zipper is generally only to simply make a cloth belt on the back of a zipper tooth, although water seepage can be prevented to a certain extent, the permeated water is only absorbed by the cloth belt essentially, the anti-seepage effect is not achieved, and the cloth belt on the back is easy to clamp on zipper teeth, so that the use experience is not high.
Disclosure of Invention
The invention aims to provide a silica gel sealing process of a waterproof chain aiming at the defects in the prior art.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a waterproof chain's silica gel sealing process, waterproof zipper include two zipper strips, the side of zipper strip all is provided with a plurality of sprocket side by side, the sprocket includes the tooth root and sets up in the tooth head in the tooth root outside, two zipper strips tooth head intermeshing, the dead slot between the tooth root is filled has first resin body, the upper surface of tooth root, the lower surface of tooth root, the upper surface of first resin body and the lower surface of first resin body all have compounded the second resin body, first resin body and second resin body are through injection molding sealing technology integrated into one piece, first resin body and second resin body are silica gel, injection molding sealing process includes following step: placing a zipper tape with a toothed chain in an injection mold, and performing injection molding by taking silica gel as injection resin, wherein the silica gel comprises the following raw materials in parts by weight:
component A
B component
Vinyl polysiloxane 100 parts
30-40 parts of modified filler
0.2-0.4 part of catalyst;
the modified filler is prepared by the following method:
(1) Adding 20-30 parts by weight of nano silicon dioxide and 6-10 parts by weight of gamma-aminopropyltriethoxysilane into ethanol water solution, then performing ultrasonic oscillation, filtering, washing and drying to obtain silane modified nano silicon dioxide;
(2) Adding silane modified nano-silica, butyl acrylate and trimethylolpropane triacrylate into the butyronitrile latex, uniformly stirring, performing irradiation crosslinking, and performing spray drying to obtain the modified filler, wherein the adding amounts of the nano-silica, the butyl acrylate and the trimethylolpropane triacrylate are 10-12wt%, 2-4wt% and 2-4wt% of the butyronitrile latex in sequence.
According to the invention, through an injection molding process, the resin body is filled in the non-meshing part of the sprocket, namely the empty groove between the tooth roots, so as to achieve the effect of water seepage prevention, and meanwhile, in order to improve the embedding stability of the resin body and further improve the waterproofness, the resin body is integrally filled on the upper surface and the lower surface of the tooth roots through the injection molding process to form complete and continuous silica gel which completely covers the tooth roots, so that the tooth roots can be used as positioning columns to fix the positions of the silica gel, the silica gel is not easy to dislocate or fall off, the structural stability is improved, and the waterproofness is also improved.
The silica gel is curable at room temperature, and the curing temperature is far lower than the softening point of plastics, so that the zipper teeth can be made of plastic zipper teeth as well as metal zipper teeth.
The two-component room temperature curable silica gel is in a liquid state before curing, so that the two-component room temperature curable silica gel has better fluidity, can fully fill tooth roots, has better flexibility and elasticity, and meets the requirements of the resin body. However, pure silicone rubber has extremely low strength and basically has no practical value, so that white carbon black or nano silica is generally required to be added for enhancement and modification, and the enhancement mode is very consistent with economic principles in general use scenes. However, the first resin body and the second resin body of the present invention are injection-molded bodies having extremely small sizes, and the modification by directly adding the filler seriously affects the flow effect, so that the fitting tooth root cannot be filled well.
According to the invention, firstly, gamma-aminopropyltriethoxysilane is used for modifying nano-silica to activate the surface performance of the nano-silica, then irradiation crosslinking is utilized, nitrile rubber particles in nitrile rubber latex are promoted by butyl acrylate and trimethylolpropane triacrylate to carry out crosslinking reaction to shrink the particle size of colloidal particles, and simultaneously, nano-silica can also carry out crosslinking reaction with butyl acrylate and trimethylolpropane triacrylate, so that a composite structure with nano-nitrile rubber particles as cores and nano-silica loaded on the surfaces of the nano-silica is finally prepared. The nitrile rubber particles have better dispersibility and compatibility in vinyl polysiloxane, and the problem of flow dispersion of the nano silicon dioxide can be fully improved by using the nitrile rubber particles as a load of the nano silicon dioxide, so that the silica gel can be effectively enhanced, the phenomenon that the filling is insufficient due to insufficient fluidity or stress concentration is generated due to insufficient dispersion is avoided, and the bending resistance of the silica gel is reduced.
Wherein the particle size of the nano silicon dioxide is 20-70nm.
Wherein the ethanol volume fraction of the ethanol water solution is 70-80%, the ultrasonic oscillation frequency is 20-40kHz, and the ultrasonic oscillation time is 30-60min.
Wherein the nitrile latex is of the Japanese Ralstonia
1571C2。
Wherein the irradiation dose of the irradiation crosslinking is 15-35kGy, and the irradiation time is 15-20h.
Wherein the viscosity of the vinyl polysiloxane is 10000-12000 mPas.
Wherein the hydrogen content of the hydrogen-containing silicone oil is 0.6-0.8wt%.
Wherein the inhibitor is 1-ethynyl 1-cyclohexanol.
Wherein the catalyst is a platinum catalyst.
The preparation method of the silica gel comprises the following steps: mixing the raw materials of the component A, heating to 100-120 ℃, and stirring for 2-3h to obtain a component A; mixing the raw materials of the component B, heating to 100-120 ℃, and stirring for 2-3h to obtain a component B; adding the component A and the component B into an injection molding machine in equal proportion for injection molding, and curing at 60-80 ℃ for 10-30min.
The invention has the beneficial effects that: according to the invention, through an injection molding process, the resin body is filled in the non-meshing part of the sprocket, namely the empty groove between the tooth roots, so as to achieve the effect of water seepage prevention, and meanwhile, in order to improve the embedding stability of the resin body and further improve the waterproofness, the resin body is integrally filled on the upper surface and the lower surface of the tooth roots through the injection molding process to form complete and continuous silica gel which completely covers the tooth roots, so that the tooth roots can be used as positioning columns to fix the positions of the silica gel, the silica gel is not easy to dislocate or fall off, the structural stability is improved, and the waterproofness is also improved.
In addition, the invention firstly modifies the nano-silica by gamma-aminopropyltriethoxysilane to activate the surface performance of the nano-silica, then radiation crosslinking is utilized, the acrylonitrile-butadiene rubber particles in the acrylonitrile-butadiene latex are promoted by butyl acrylate and trimethylolpropane triacrylate to carry out crosslinking reaction to shrink the particle size of colloidal particles, and simultaneously the nano-silica can also carry out crosslinking reaction with the butyl acrylate and the trimethylolpropane triacrylate, so that the composite structure with the nano-acrylonitrile-butadiene rubber particles as cores and the nano-silica loaded on the surface is finally prepared. The nitrile rubber particles have better dispersibility and compatibility in vinyl polysiloxane, and the problem of flow dispersion of the nano silicon dioxide can be fully improved by using the nitrile rubber particles as a load of the nano silicon dioxide, so that the silica gel can be effectively enhanced, the phenomenon that the filling is insufficient due to insufficient fluidity or stress concentration is generated due to insufficient dispersion is avoided, and the bending resistance of the silica gel is reduced.
Drawings
FIG. 1 is a top view of the structure of the waterproof slide fastener of the present invention;
FIG. 2 is a structural sectional view of the waterproof slide fastener of the present invention;
the reference signs are: 1-zipper tape, 2-tooth head, 3-tooth root, 4-first resin body and 5-second resin body.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
The utility model provides a waterproof chain's silica gel sealing process, waterproof zipper include two zipper strips 1, zipper strip 1's side all is provided with a plurality of sprocket side by side, the sprocket includes tooth root 3 and sets up in tooth head 2 in the 3 outsides of tooth root, two zipper strips 1 tooth head 2 intermeshing, the dead slot between tooth root 3 is filled with first resin body 4, the upper surface of tooth root 3, the lower surface of tooth root 3, the upper surface of first resin body 4 and the lower surface of first resin body 4 all compound second resin body 5, first resin body 4 and second resin body 5 are through injection molding sealing process integrated into one piece, first resin body 4 and second resin body 5 are silica gel, injection molding sealing process includes following step: the zipper tape 1 with the toothed chain is placed in an injection mold, and injection molding is carried out by taking silica gel as injection molding resin, wherein the silica gel comprises the following raw materials in parts by weight:
component A
B component
Vinyl polysiloxane 100 parts
30 portions of modified filler
0.2 part of catalyst;
the modified filler is prepared by the following method:
(1) Adding 20 parts by weight of nano silicon dioxide and 6 parts by weight of gamma-aminopropyltriethoxysilane into an ethanol water solution, then performing ultrasonic oscillation, filtering, washing and drying to obtain silane modified nano silicon dioxide;
(2) Adding silane modified nano-silica, butyl acrylate and trimethylolpropane triacrylate into the butyronitrile latex, uniformly stirring, performing irradiation crosslinking, and performing spray drying to obtain the modified filler, wherein the adding amount of the nano-silica, the butyl acrylate and the trimethylolpropane triacrylate is 10wt%, 2wt% and 2wt% of the butyronitrile latex in sequence.
Wherein the particle size of the nano silicon dioxide is 20nm.
Wherein the ethanol volume fraction of the ethanol aqueous solution is 70%, the ultrasonic oscillation frequency is 20kHz, and the ultrasonic oscillation time is 30min.
Wherein the nitrile latex is of the Japanese Ralstonia
1571C2。
Wherein the irradiation dose of the irradiation crosslinking is 15kGy, and the irradiation time is 15h.
Wherein the viscosity of the vinyl polysiloxane is 10000 mPas.
Wherein the hydrogen content of the hydrogen-containing silicone oil is 0.6wt%.
Wherein the inhibitor is 1-ethynyl 1-cyclohexanol.
Wherein the catalyst is a platinum catalyst.
The preparation method of the silica gel comprises the following steps: mixing the raw materials of the component A, heating to 100 ℃, and stirring for 2 hours to obtain a component A; mixing the raw materials of the component B, heating to 100 ℃, and stirring for 2 hours to obtain a component B; adding the component A and the component B into an injection molding machine in equal proportion for injection molding, and curing for 10min at 60 ℃.
Example 2
The utility model provides a waterproof chain's silica gel sealing process, waterproof zipper include two zipper strips 1, zipper strip 1's side all is provided with a plurality of sprocket side by side, the sprocket includes tooth root 3 and sets up in tooth head 2 in the 3 outsides of tooth root, two zipper strips 1 tooth head 2 intermeshing, the dead slot between tooth root 3 is filled with first resin body 4, the upper surface of tooth root 3, the lower surface of tooth root 3, the upper surface of first resin body 4 and the lower surface of first resin body 4 all compound second resin body 5, first resin body 4 and second resin body 5 are through injection molding sealing process integrated into one piece, first resin body 4 and second resin body 5 are silica gel, injection molding sealing process includes following step: placing a zipper tape 1 with a toothed chain in an injection mold, and performing injection molding by taking silica gel as injection molding resin, wherein the silica gel comprises the following raw materials in parts by weight:
component A
B component
Vinyl polysiloxane 100 parts
40 portions of modified filler
0.4 part of catalyst;
the modified filler is prepared by the following method:
(1) Adding 30 parts by weight of nano silicon dioxide and 10 parts by weight of gamma-aminopropyltriethoxysilane into an ethanol water solution, then performing ultrasonic oscillation, filtering, washing and drying to obtain silane modified nano silicon dioxide;
(2) Adding silane modified nano-silica, butyl acrylate and trimethylolpropane triacrylate into the butyronitrile latex, uniformly stirring, performing irradiation crosslinking, and performing spray drying to obtain the modified filler, wherein the adding amounts of the nano-silica, the butyl acrylate and the trimethylolpropane triacrylate are 12wt%, 4wt% and 4wt% of the butyronitrile latex in sequence.
Wherein the particle size of the nano silicon dioxide is 70nm.
Wherein the ethanol volume fraction of the ethanol aqueous solution is 80%, the ultrasonic oscillation frequency is 40kHz, and the ultrasonic oscillation time is 60min.
Wherein the nitrile latex is of the Japanese Ralstonia
1571C2。
Wherein the irradiation dose of the irradiation crosslinking is 35kGy, and the irradiation time is 20h.
Wherein the viscosity of the vinyl polysiloxane is 12000 mPas.
Wherein the hydrogen content of the hydrogen-containing silicone oil is 0.8wt%.
Wherein the inhibitor is 1-ethynyl 1-cyclohexanol.
Wherein the catalyst is a platinum catalyst.
The preparation method of the silica gel comprises the following steps: mixing the raw materials of the component A, heating to 120 ℃, and stirring for 3 hours to obtain a component A; mixing the raw materials of the component B, heating to 120 ℃, and stirring for 3 hours to obtain a component B; adding the component A and the component B into an injection molding machine in equal proportion for injection molding, and curing for 30min at 80 ℃.
Example 3
The utility model provides a silica gel sealing process of waterproof chain, waterproof zipper include two zipper strips 1, the side of zipper strip 1 all is provided with a plurality of sprocket side by side, the sprocket includes tooth root 3 and sets up in the tooth head 2 in the 3 outsides in tooth root, two zipper strips 1 tooth head 2 intermeshing, empty slot between the tooth root 3 is filled there is first resin body 4, the upper surface of tooth root 3, the lower surface of tooth root 3, the upper surface of first resin body 4 and the lower surface of first resin body 4 all compound second resin body 5, first resin body 4 and second resin body 5 are through injection molding sealing process integrated into one piece, first resin body 4 and second resin body 5 are silica gel, the injection molding sealing process includes following step: placing a zipper tape 1 with a toothed chain in an injection mold, and performing injection molding by taking silica gel as injection molding resin, wherein the silica gel comprises the following raw materials in parts by weight:
component A
B component
Vinyl polysiloxane 100 parts
Modified filler 35 parts
0.3 part of a catalyst;
the modified filler is prepared by the following method:
(1) Adding 25 parts by weight of nano silicon dioxide and 8 parts by weight of gamma-aminopropyltriethoxysilane into an ethanol water solution, then performing ultrasonic oscillation, filtering, washing and drying to obtain silane modified nano silicon dioxide;
(2) Adding silane modified nano-silica, butyl acrylate and trimethylolpropane triacrylate into the butyronitrile latex, uniformly stirring, performing irradiation crosslinking, and performing spray drying to obtain the modified filler, wherein the adding amounts of the nano-silica, the butyl acrylate and the trimethylolpropane triacrylate are 11wt%, 3wt% and 3wt% of the butyronitrile latex in sequence.
Wherein the particle size of the nano silicon dioxide is 45nm.
Wherein the ethanol volume fraction of the ethanol aqueous solution is 75%, the ultrasonic oscillation frequency is 30kHz, and the ultrasonic oscillation time is 45min.
Wherein the nitrile latex is of the Japanese Ralstonia
1571C2。
Wherein the irradiation dose of the irradiation crosslinking is 25kGy, and the irradiation time is 17.5h.
Wherein the viscosity of the vinyl polysiloxane is 11000 mPas.
Wherein the hydrogen content of the hydrogen-containing silicone oil is 0.7wt%.
Wherein the inhibitor is 1-ethynyl 1-cyclohexanol.
Wherein the catalyst is a platinum catalyst.
The preparation method of the silica gel comprises the following steps: mixing the raw materials of the component A, heating to 110 ℃, and stirring for 2.5 hours to obtain a component A; mixing the raw materials of the component B, heating to 110 ℃, and stirring for 2.5 hours to obtain a component B; adding the component A and the component B into an injection molding machine in equal proportion for injection molding, and curing for 20min at 70 ℃.
Comparative example 1
This comparative example differs from example 3 in that:
the modified filler is replaced by silane modified nano silicon dioxide with equal weight parts.
Comparative example 2
This comparative example differs from example 2 in that:
the modified filler is replaced by a composition consisting of nanometer nitrile rubber and silane modified nanometer silica according to a weight ratio of 1:1.
The preparation method of the nanometer nitrile rubber particles comprises the following steps: adding butyl acrylate and trimethylolpropane triacrylate into the butyronitrile latex, uniformly stirring, performing irradiation crosslinking, and performing spray drying to obtain the nano butyronitrile rubber particles, wherein the adding amount of the butyl acrylate and the trimethylolpropane triacrylate is 3wt% and 3wt% of the butyronitrile latex in sequence
The mechanical properties of the samples prepared from the silica gels of example 3, comparative example 1 and comparative example 2 were tested, and the results are shown in the following table:
| tensile Strength (MPa) | Tear strength (KN/m) | Elongation at Break (%) | |
| Example 3 | 6.8 | 11.5 | 650 |
| Comparative example 1 | 8.6 | 13.1 | 530 |
| Comparative example 2 | 5.0 | 10.1 | 590 |
The data show that the improvement of the mechanical property of the modified filler is not the optimal choice, the direct addition of a large amount of nano silica for curing obviously accords with the economic principle, and the addition of nano nitrile rubber particles is not needed, so that the dosage of the nano silica can be further increased, the reinforcing effect is improved, the improvement of the tensile strength and the tear strength is very obvious, the elongation at break of the modified nano nitrile rubber added in the embodiment 3 and the comparative example 2 is more advantageous, but the excessively high elongation at break does not help the use scene of the modified filler.
The present invention also observed the results of bending the same site at an angle of-150 ° - +150 ° for the waterproof zippers of example 3, comparative example 1 and comparative example 2, and repeating the bending 2000 times. The silica gel of the waterproof zipper of the embodiment 3 has no obvious sign of loosening or falling off, and the comparative example 1 has the problem of uneven dispersion due to the large using amount of the nano silicon dioxide, so that the phenomenon of whitening caused by stress concentration occurs; comparative example 2 shows poor bending yield resistance due to low tensile strength, and silica gel shows cracks.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A silica gel sealing process of a waterproof chain is characterized in that: waterproof zipper includes two zipper strips, the side of zipper strip all is provided with the side by side sprocket of a plurality of, the sprocket includes the tooth root and sets up in the tooth head in the tooth root outside, two zipper strips tooth head intermeshing, empty groove between the tooth root is filled with first resin body, the upper surface of tooth root, the lower surface of tooth root, the upper surface of first resin body and the lower surface of first resin body all compound has the second resin body, first resin body and second resin body are through injection molding sealing process integrated into one piece, first resin body and second resin body are silica gel, injection molding sealing process includes following step: placing a zipper tape with a toothed chain in an injection mold, and performing injection molding by taking silica gel as injection molding resin, wherein the silica gel comprises the following raw materials in parts by weight:
component A
B component
Vinyl polysiloxane 100 parts
30-40 parts of modified filler
0.2-0.4 part of catalyst;
the modified filler is prepared by the following method:
(1) Adding 20-30 parts by weight of nano silicon dioxide and 6-10 parts by weight of gamma-aminopropyltriethoxysilane into an ethanol water solution, then performing ultrasonic oscillation, filtering, washing and drying to obtain silane modified nano silicon dioxide;
(2) Adding silane modified nano-silica, butyl acrylate and trimethylolpropane triacrylate into the butyronitrile latex, uniformly stirring, performing irradiation crosslinking, and performing spray drying to obtain the modified filler, wherein the adding amounts of the nano-silica, the butyl acrylate and the trimethylolpropane triacrylate are 10-12wt%, 2-4wt% and 2-4wt% of the butyronitrile latex in sequence;
the preparation method of the silica gel comprises the following steps: mixing the raw materials of the component A, heating to 100-120 ℃, and stirring for 2-3h to obtain a component A; mixing the raw materials of the component B, heating to 100-120 ℃, and stirring for 2-3h to obtain a component B; adding the component A and the component B into an injection molding machine in equal proportion for injection molding, and curing at 60-80 ℃ for 10-30min.
2. The silicone sealing process for a waterproof chain according to claim 1, wherein: the particle size of the nano silicon dioxide is 20-70nm.
3. The silicone sealing process for a waterproof chain according to claim 1, wherein: the ethanol volume fraction of the ethanol water solution is 70-80%, the ultrasonic oscillation frequency is 20-40kHz, and the ultrasonic oscillation time is 30-60min.
4. The silicone sealing process for a waterproof chain according to claim 1, wherein: the nitrile latex is of the Japanese Ramarion type
1571C2。
5. The silicone sealing process for a waterproof chain according to claim 1, wherein: the irradiation dose of the irradiation crosslinking is 15-35kGy, and the irradiation time is 15-20h.
6. The silicone sealing process for a waterproof chain according to claim 1, wherein: the viscosity of the vinyl polysiloxane is 10000-12000mPa & s.
7. The silicone sealing process for a waterproof chain according to claim 1, wherein: the hydrogen content of the hydrogen-containing silicone oil is 0.6-0.8wt%.
8. The silicone sealing process for a waterproof chain according to claim 1, wherein: the inhibitor is 1-ethynyl 1-cyclohexanol.
9. The silicone sealing process for a waterproof chain according to claim 1, wherein: the catalyst is a platinum catalyst.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203435799U (en) * | 2013-02-16 | 2014-02-19 | 陈清雄 | Water-resistant and breathable resin zipper with nanometer fixture fabric |
| CN207285410U (en) * | 2017-08-16 | 2018-05-01 | 杭州西艾帝拉链有限公司 | A kind of stealth waterproof slide fastener |
| CN108948500A (en) * | 2018-08-23 | 2018-12-07 | 之江（四川）高新材料应用技术研究院有限公司 | The preparation method of the polyethylene mixture containing polyurethane-modified powdered rubber for 3D printing |
| CN110269325A (en) * | 2019-08-13 | 2019-09-24 | 浙江伟星实业发展股份有限公司 | A kind of waterproof slide fastener and its processing method |
| CN110623376A (en) * | 2019-09-29 | 2019-12-31 | 东莞市瑞翔新型材料科技有限公司 | Waterproof metal zipper and manufacturing process thereof |
| CN211241954U (en) * | 2020-01-13 | 2020-08-14 | 东莞市瑞翔新型材料科技有限公司 | Waterproof zipper with embossing effect |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060128893A1 (en) * | 2000-02-08 | 2006-06-15 | Kaneka Corporation | Curable compositions |
-
2020
- 2020-12-29 CN CN202011597386.0A patent/CN112708279B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203435799U (en) * | 2013-02-16 | 2014-02-19 | 陈清雄 | Water-resistant and breathable resin zipper with nanometer fixture fabric |
| CN207285410U (en) * | 2017-08-16 | 2018-05-01 | 杭州西艾帝拉链有限公司 | A kind of stealth waterproof slide fastener |
| CN108948500A (en) * | 2018-08-23 | 2018-12-07 | 之江（四川）高新材料应用技术研究院有限公司 | The preparation method of the polyethylene mixture containing polyurethane-modified powdered rubber for 3D printing |
| CN110269325A (en) * | 2019-08-13 | 2019-09-24 | 浙江伟星实业发展股份有限公司 | A kind of waterproof slide fastener and its processing method |
| CN110623376A (en) * | 2019-09-29 | 2019-12-31 | 东莞市瑞翔新型材料科技有限公司 | Waterproof metal zipper and manufacturing process thereof |
| CN211241954U (en) * | 2020-01-13 | 2020-08-14 | 东莞市瑞翔新型材料科技有限公司 | Waterproof zipper with embossing effect |
Non-Patent Citations (1)
| Title |
|---|
| 张霜，等.服装用拉链防水性能评价方法研究.《针织工业》.2020,(第2020（11）期),第67-70页. * |
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