CN114957815A - Stretch-proofing rubber waterstop - Google Patents
Stretch-proofing rubber waterstop Download PDFInfo
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- CN114957815A CN114957815A CN202210722417.3A CN202210722417A CN114957815A CN 114957815 A CN114957815 A CN 114957815A CN 202210722417 A CN202210722417 A CN 202210722417A CN 114957815 A CN114957815 A CN 114957815A
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Abstract
The invention discloses an anti-tensile rubber waterstop and relates to the technical field of waterstops. The stretch-proofing rubber waterstop comprises the following components in parts by weight: 70-90 parts of natural rubber, 10-30 parts of butadiene rubber, 4-8 parts of organic modified whiskers, 4-10 parts of dopamine modified filler, 1-5 parts of dicumyl peroxide and 0.5-1.5 parts of anti-aging agent. According to the application, the organic modified crystal whisker, the dopamine modified filler and the dicumyl peroxide are simultaneously applied to the rubber material, so that the tensile strength and toughness of the rubber material can be obviously improved, and the reduction of the breakage of the rubber material is facilitated.
Description
Technical Field
The invention relates to the technical field of water stops, in particular to a stretch-resistant rubber water stop.
Background
The rubber waterstop generally adopts a waterstop type with a cross section provided with a round hole or a U-shaped hole in the middle, a fishtail shape at two wing ends and small convex ribs uniformly distributed from a middle hole to the wing ends. The rubber waterstop is made up of natural rubber and synthetic rubber as main raw materials, and various assistants and fillers as other raw materials through plastication, pugging and press shaping.
In the related art, the rubber water stop is mainly used for the foundation engineering that the rubber water stop is arranged in a construction joint and a deformation joint when concrete is cast in place, and the rubber water stop and the concrete structure are integrated after the concrete is solidified into the concrete structure.
In view of the above-mentioned related art, the inventors thought that when the concrete structure is coagulated, the concrete structure shrinks and applies a tensile force to the rubber waterstop, and the rubber waterstop is easily broken.
Disclosure of Invention
In order to reduce the rubber waterstop fracture when the construction, this application provides a stretch-proofing rubber waterstop.
The application provides an anti-tensile rubber waterstop, adopts following technical scheme:
the stretch-resistant rubber waterstop comprises the following components in parts by weight: 70-90 parts of natural rubber, 10-30 parts of butadiene rubber, 4-8 parts of organic modified whiskers, 4-10 parts of dopamine modified filler, 1-5 parts of dicumyl peroxide and 0.5-1.5 parts of anti-aging agent.
By adopting the technical scheme, the organic modified crystal whisker is a crystal whisker material with an organic group on the surface, has higher mechanical strength and no obvious fatigue effect, and can reinforce and toughen the rubber material. And the organic groups on the surfaces of the organic modified whiskers are beneficial to improving the dispersibility of the organic modified whiskers in rubber, so that the organic modified whiskers can be better dispersed in rubber materials. The dopamine modified filler is a reinforcing filler with dopamine groups grafted on the surface, and the dopamine groups can improve the interfacial bonding characteristic of the filler and rubber and contribute to improving the interfacial strength between the filler and the rubber, so that the mechanical property of the rubber material is improved.
The inventor unexpectedly finds that the tensile strength and toughness of the rubber material can be remarkably improved and the reduction of the fracture of the rubber material is facilitated by simultaneously applying the organic modified whiskers, the dopamine modified filler and the dicumyl peroxide to the rubber material. The reason is probably that dicumyl peroxide can form a bridge bond between molecular chains, so that a cross-linking structure is formed between the organic modified whisker and the dopamine modified filler and between the organic modified whisker and the rubber, and the tensile resistance of the rubber material is improved.
In a specific possible embodiment, the stretch-resistant rubber water stop belt comprises the following components in parts by weight: 77-83 parts of natural rubber, 17-23 parts of butadiene rubber, 5-7 parts of organic modified whisker, 6-8 parts of dopamine modified filler, 2.5-4.5 parts of dicumyl peroxide and 0.8-1.2 parts of anti-aging agent.
By adopting the technical scheme, the inventor finds that the tensile strength, the elongation at break and the tearing strength of the prepared water stop belt are remarkably improved by controlling the proportion of each component within the range, so that the proportion of each component is preferably within the range, and the anti-tensile property of the water stop belt is further improved.
In a specific possible embodiment, the organically modified whisker is made from an organic surface modifier and a whisker material comprising any one of a potassium titanate whisker, a basalt whisker, or an anhydrous calcium carbonate whisker.
By adopting the technical scheme, the potassium titanate whisker, the basalt whisker or the anhydrous calcium carbonate whisker are all inorganic whiskers, and compared with organic whiskers, the inorganic whiskers have higher strength and modulus, thereby being beneficial to further improving the tensile strength of the waterstop and reducing the fracture of the waterstop.
In a particular possible embodiment, the organic surface-modifying agent comprises stearic acid and ethanol.
Through adopting above-mentioned technical scheme, stearic acid can dissolve in the ethanol completely, helps stearic acid and whisker material's surperficial comprehensive contact to modify whisker material's surface, modified whisker material, with the compatibility and the dispersibility of rubber all better, help improving the mechanical properties of waterstop, reduce the waterstop fracture.
In a specific embodiment, the organically modified whisker is prepared by the following steps:
adding the whisker material into an organic surface modifier, heating to 30-50 ℃, preserving heat, reacting for 5-10min, filtering, washing and drying to obtain the organic modified whisker.
By adopting the technical scheme, the inventor finds that the prepared organic modified crystal whisker can be better dispersed in the rubber material and can further improve the mechanical property of the water stop band by controlling the process temperature and the reaction time within the range. This is probably because controlling the process temperature and the reaction time within the above ranges contributes to improving the modification effect of the organically modified whisker.
In a specific possible embodiment, the dopamine modified filler is any one of dopamine-grafted silicon carbon black, dopamine-grafted white carbon black, dopamine-grafted carbon nanotube, dopamine-grafted calcium carbonate or dopamine-grafted kaolin.
By adopting the technical scheme, the silicon carbon black, the white carbon black, the carbon nano tube, the calcium carbonate and the kaolin are all inorganic fillers which can be used for reinforcing rubber materials, the inorganic fillers are modified by dopamine, the interface bonding characteristics of the fillers and the rubber can be improved, and a cross-linking structure can be formed with the organic modified crystal whiskers, so that the tensile strength and the toughness of the water stop are improved.
In a specific embodiment, the dopamine modified filler is dopamine grafted silicon carbon black, and the preparation steps of the dopamine grafted silicon carbon black are as follows: dissolving 20-30 parts by weight of dopamine in 600 parts by weight of physiological saline to obtain dopamine solution; adding a Tris reagent into the dopamine solution, and adjusting the pH value to 8-8.8 to obtain a solution to be reacted; and adding 10-15 parts by weight of silicon carbon black into the reaction solution, stirring for reaction, filtering, washing and drying to obtain the dopamine grafted silicon carbon black.
By adopting the technical scheme, compared with other inorganic fillers, the silicon carbon black has lower cost and is beneficial to reducing the cost. By adopting the preparation steps, the prepared dopamine grafted silicon carbon black can better improve the tensile strength of the water stop belt, which is probably because the grafting effect of the silicon carbon black can be improved by adopting the process conditions.
In a specific embodiment, the stretch-resistant rubber waterstop further comprises any one of dioctyl phthalate, dioctyl sebacate, or dioctyl adipate.
By adopting the technical scheme, the dioctyl phthalate, the dioctyl sebacate or the dioctyl adipate has the plasticizing effect, the mechanical property of the water stop is improved, and the fracture of the water stop is reduced.
In a specific embodiment, the stretch-resistant rubber waterstop is prepared by the following steps:
uniformly mixing natural rubber, butadiene rubber, organic modified whiskers, dopamine modified filler, dicumyl peroxide and an anti-aging agent according to a ratio to obtain a mixed raw material;
banburying the mixed raw materials for 10-20min at 40-60 ℃ to obtain a banburying material;
and pressing the banburying material into a rubber sheet at 70-90 ℃, and shaping the rubber sheet to obtain the stretch-resistant rubber water stop.
By adopting the technical scheme, the inventor finds that the prepared water stop has higher tensile strength and is not easy to break by adopting the preparation steps, probably because the process conditions are controlled within the range, the components are mixed, and a cross-linked structure is generated, so that the tensile resistance of the water stop is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the application, the organic modified crystal whisker, the dopamine modified filler and the dicumyl peroxide are simultaneously applied to the rubber material, so that the tensile strength and toughness of the rubber material can be obviously improved, and the reduction of the breakage of the rubber material is facilitated;
2. the water stop belt adopts the organic surface modifier and the whisker material, and the inorganic whisker after organic modification has higher strength and modulus, which is beneficial to further improving the tensile strength of the water stop belt and reducing the fracture of the water stop belt;
3. the preparation method selects the dopamine grafted silicon carbon black and the preparation steps, so that the cost is reduced, and the grafting effect of the silicon carbon black is improved.
Detailed Description
The present application will be described in further detail with reference to examples.
The inventor finds that dioctyl phthalate, dioctyl sebacate or dioctyl adipate can be used as the plasticizer, and the addition of any one of dioctyl phthalate, dioctyl sebacate or dioctyl adipate to the rubber material is helpful for improving the tensile strength and the elongation at break of the rubber material, and the example of the application selects dioctyl phthalate for testing.
The inventor also finds that the dopamine modified filler prepared by modifying inorganic fillers such as silicon carbon black, white carbon black, carbon nanotubes, calcium carbonate and kaolin is beneficial to improving the interfacial bonding characteristic of the filler and rubber, and the embodiment of the application selects the silicon carbon black and the carbon nanotubes for testing.
Examples of preparation of organically modified whiskers
Preparation example 1
The preparation example provides an organic modified whisker, and the preparation steps are as follows:
adding 50L of ethanol into a reaction kettle, adding 15kg of stearic acid into the reaction kettle, and stirring until the stearic acid is dissolved to obtain an organic surface modifier;
adding 5kg of anhydrous calcium carbonate crystal whisker into a reaction kettle, heating liquid in the reaction to 40 ℃, keeping the temperature for reaction for 7min, filtering the liquid in the reaction kettle, washing filter residue with anhydrous ethanol and deionized water for three times, and drying the washed filter residue to obtain the organic modified crystal whisker.
Preparation example 2
The preparation example provides an organic modified whisker, and the difference between the preparation example and the preparation example 1 is that the liquid in the reaction is heated to 30 ℃ and the heat preservation reaction is carried out for 10 min.
Preparation example 3
The preparation example provides an organic modified whisker, and the difference between the preparation example and the preparation example 1 is that the liquid in the reaction is heated to 50 ℃, and the heat preservation reaction is carried out for 5 min.
Preparation example 4
This preparation example provides an organically modified whisker, and differs from preparation example 1 in that an equal amount of potassium titanate whisker is used instead of an anhydrous calcium carbonate whisker.
Preparation example 5
The present preparation example provides an organically modified whisker, and differs from preparation example 1 in that an equal amount of basalt whisker is used instead of an anhydrous calcium carbonate whisker.
Preparation example 6
The preparation example provides an organic modified whisker, and the preparation steps are as follows:
adding 5kg of anhydrous calcium carbonate whisker and 10L of silane coupling agent KH-151 into a reaction kettle, heating liquid in the reaction to 40 ℃, keeping the temperature for reaction for 7min, filtering the liquid in the reaction kettle, washing filter residue with anhydrous ethanol and deionized water for three times, and drying the washed filter residue to obtain the organic modified whisker.
Preparation example of dopamine-modified Filler
Preparation example 7
The preparation example provides dopamine grafted silicon carbon black, which comprises the following preparation steps:
adding 550g of normal saline into a reaction kettle, adding 25g of dopamine into the reaction kettle, and stirring until the dopamine is dissolved to obtain a dopamine solution.
And dropwise adding the Tris reagent into the dopamine solution under stirring, and adjusting the pH value to 8.4 to obtain a solution to be reacted.
And then, adding 12.5kg of silicon carbon black into the reaction solution, continuously stirring and reacting for 15min, filtering the liquid in the reaction kettle, washing the filter residue for 3 times by using absolute ethyl alcohol and deionized water, and drying the washed filter residue to obtain the dopamine grafted silicon carbon black.
Preparation example 8
The preparation example provides dopamine grafted silicon carbon black, and the preparation example is different from the preparation example 7 in that the dosage of physiological saline is 500g, the dosage of dopamine is 20g, and the dosage of silicon carbon black is 10 g.
Preparation example 9
The preparation example provides dopamine grafted silicon carbon black, and the preparation example is different from the preparation example 7 in that the dosage of normal saline is 600g, the dosage of dopamine is 30g, and the dosage of silicon carbon black is 15 g.
Preparation example 10
The preparation example provides dopamine-grafted silicon carbon black, and the difference between the preparation example and the preparation example 7 is that the pH is adjusted to 8.0 to obtain a solution to be reacted.
Preparation example 11
The preparation example provides dopamine-grafted silicon carbon black, and the difference between the preparation example and the preparation example 7 is that the pH is adjusted to 8.8 to obtain a solution to be reacted.
Preparation example 12
This preparation example provided dopamine grafted silicon carbon black, and differs from preparation example 7 in that the silicon carbon black was replaced with an equal amount of carbon nanotubes.
Examples
Example 1
The embodiment provides a stretch-proofing rubber waterstop, includes following raw materials: 80kg of natural rubber, 20kg of butadiene rubber, 6kg of the organically modified whisker prepared in preparation example 1, 7kg of the dopamine modified filler prepared in preparation example 7, 3kg of dicumyl peroxide and 1kg of an antioxidant 264.
The preparation method comprises the following steps:
according to the proportion, the natural rubber, the butadiene rubber, the organic modified crystal whisker, the dopamine modified filler, the dicumyl peroxide and the anti-aging agent 264 are all added into a reaction kettle and stirred uniformly to obtain a mixed raw material.
And adding the mixed raw materials in the reaction kettle into an internal mixer, operating the internal mixer to heat the mixed raw materials to 50 ℃, and internally mixing the mixed raw materials for 15min under the condition of keeping the temperature at 50 ℃ to obtain the internal mixed material.
And (2) operating the internal mixer to convey the internal mixture to a double-roll open mill, adjusting the temperature of a roller to 80 ℃, pressing the internal mixture into rubber sheets, and then cutting and trimming the rubber sheets to form the shape of a water stop band to obtain the stretch-resistant rubber water stop band.
Example 2
The embodiment provides a stretch-proofing rubber waterstop, and the difference between the embodiment and the embodiment 1 is that the stretch-proofing rubber waterstop comprises the following raw materials: 70kg of natural rubber, 10kg of butadiene rubber, 4kg of the organically modified whisker prepared in preparation example 1, 4kg of the dopamine modified filler prepared in preparation example 7, 1kg of dicumyl peroxide and 0.5kg of an anti-aging agent 264.
Example 3
The embodiment provides a stretch-proofing rubber waterstop, and the difference between the embodiment and the embodiment 1 is that the stretch-proofing rubber waterstop comprises the following raw materials: 77kg of natural rubber, 17kg of butadiene rubber, 5kg of the organically modified whisker prepared in preparation example 1, 6kg of the dopamine modified filler prepared in preparation example 7, 2.5kg of dicumyl peroxide and 0.8kg of an anti-aging agent 264.
Example 4
The embodiment provides a stretch-proofing rubber waterstop, and the difference between the embodiment and the embodiment 1 is that the stretch-proofing rubber waterstop comprises the following raw materials: 83kg of natural rubber, 23kg of butadiene rubber, 7kg of the organically modified whisker prepared in preparation example 1, 8kg of the dopamine modified filler prepared in preparation example 7, 4.5kg of dicumyl peroxide and 1.2kg of an antioxidant 264.
Example 5
The embodiment provides a stretch-proofing rubber waterstop, and the difference between the embodiment and the embodiment 1 is that the stretch-proofing rubber waterstop comprises the following raw materials: 90kg of natural rubber, 30kg of butadiene rubber, 8kg of the organically modified whisker prepared in preparation example 1, 10kg of the dopamine modified filler prepared in preparation example 7, 5kg of dicumyl peroxide and 1.5kg of an anti-aging agent 264.
Example 6
This example provides a stretch-proofing rubber waterstop, and the difference between this example and example 1 is that an internal mixer is operated to heat the mixed raw materials to 40 ℃, and the mixed raw materials are internally mixed for 20min under the condition of maintaining the temperature at 40 ℃ to obtain an internal mixed material.
Example 7
This example provides a stretch-resistant rubber waterstop, and differs from example 1 in that an internal mixer is operated to heat the mixed raw materials to 60 ℃, and the mixed raw materials are internally mixed for 10min under the condition of maintaining at 60 ℃ to obtain an internal mixed material.
Example 8
The present example provides a stretch-resistant rubber waterstop, and the difference between the present example and example 1 is that the roller temperature is adjusted to 70 ℃, and the banbury mixer is pressed into a rubber sheet.
Example 9
The present example provides a stretch-resistant rubber waterstop, and the difference between the present example and example 1 is that the roller temperature is adjusted to 90 ℃, and the banbury mixer is pressed into a rubber sheet.
Example 10
This example provides a stretch-resistant rubber waterstop, and differs from example 1 in that the organic modification whisker prepared in preparation example 2 is used as the organic modification whisker.
Example 11
This example provides a stretch-resistant rubber waterstop, and differs from example 1 in that the organic modification whisker prepared in preparation example 3 is used as the organic modification whisker.
Example 12
This example provides a stretch-resistant rubber waterstop, and differs from example 1 in that the organic modification whisker prepared in preparation example 4 is used as the organic modification whisker.
Example 13
This example provides a stretch-resistant rubber waterstop, and differs from example 1 in that the organic modification whisker prepared in preparation example 5 is used as the organic modification whisker.
Example 14
This example provides a stretch-resistant rubber waterstop, and differs from example 1 in that the organic modification whisker prepared in preparation example 6 is used as the organic modification whisker.
Example 15
The embodiment provides a stretch-resistant rubber water stop, and the difference between the embodiment and the embodiment 1 is that the dopamine modified filler prepared in preparation 8 is used as the dopamine modified filler.
Example 16
The embodiment provides a stretch-resistant rubber water stop, and the difference between the embodiment and the embodiment 1 is that the dopamine modified filler prepared in preparation 9 is used as the dopamine modified filler.
Example 17
The embodiment provides a stretch-resistant rubber water stop, and the difference between the embodiment and the embodiment 1 is that the dopamine modified filler prepared in the preparation example 10 is used as the dopamine modified filler.
Example 18
The embodiment provides a stretch-resistant rubber water stop, and the difference between the embodiment and the embodiment 1 is that the dopamine modified filler prepared in preparation 11 is used as the dopamine modified filler.
Example 19
The embodiment provides a stretch-resistant rubber water stop, and the difference between the embodiment and the embodiment 1 is that the dopamine modified filler prepared in preparation 12 is used as the dopamine modified filler.
Example 20
This example provides a stretch-resistant rubber waterstop, and differs from example 1 in that 10kg of dioctyl phthalate and an anti-aging agent 264 are added into a reaction kettle simultaneously.
Comparative example
Comparative example 1
The present comparative example, which is different from comparative example 1 in that the organically modified anhydrous calcium carbonate whiskers prepared in preparation example 1 were replaced with equal amounts of anhydrous calcium carbonate whiskers, provides a rubber waterstop.
Comparative example 2
The comparative example, which is different from comparative example 1 in that dopamine-grafted silicon carbon black prepared in preparation example 7 was replaced with an equal amount of silicon carbon black, provides a rubber water-stop.
Comparative example 3
The comparative example, which is different from comparative example 1 in that dicumyl peroxide is not contained, provides a rubber waterstop.
Performance test
The following performance tests were performed on the rubber waterstops provided in examples 1 to 20 and comparative examples 1 to 3. The tensile strength, elongation at break and tear strength of the rubber waterstop were measured according to GB/T52892 measurement of tensile Properties of vulcanized rubber or thermoplastic rubber, and the measurement results are shown in Table 1.
TABLE 1
Combining example 1 and comparative examples 1-3 and table 1, it can be seen that comparative examples 1-3 have lower tensile strength, elongation at break, and tear strength than example 1. The organic modified crystal whisker, the dopamine grafted filler and the dicumyl peroxide are simultaneously applied to the water stop, so that the tensile resistance of the water stop can be obviously improved, and the defect is not available.
As can be seen by combining examples 1-5 with Table 1, examples 1-5 all had higher tensile strength, elongation at break and tear strength, and examples 1, 3 and 4 had higher tensile strength, elongation at break and tear strength. This shows that the water stops prepared in examples 1-5 have better tensile properties, and the water stops prepared in examples 1, 3 and 4 have better tensile properties.
Combining example 1 and examples 6-9 with table 1, it can be seen that examples 6-9 all had less variation in tensile strength, elongation at break, and tear strength than example 1. This indicates that within the process conditions of example 1 and examples 6-9, both contribute to the preparation of a waterstop with better tensile properties.
Combining example 1 and examples 10-14 and table 1, it can be seen that examples 10-14 all have less variation in tensile strength, elongation at break, and tear strength than example 1. This indicates that the organically modified whiskers prepared in the ranges of preparation examples 1 to 6 all contribute to the improvement of the tensile resistance of the waterstop.
Combining example 1 and examples 15-19 with Table 1, it can be seen that examples 15-19 all have less variation in tensile strength, elongation at break, and tear strength than example 1. This indicates that the dopamine modified fillers prepared in the range of preparation examples 7-12 all contribute to the improvement of the tensile resistance of the waterstop.
Combining example 1 and example 20 and table 1, it can be seen that the tensile strength, elongation at break and tear strength of example 20 are increased compared to example 1, which shows that the addition of dioctyl phthalate helps to further improve the tensile resistance of the waterstop.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. The stretch-resistant rubber waterstop is characterized by comprising the following components in parts by weight: 70-90 parts of natural rubber, 10-30 parts of butadiene rubber, 4-8 parts of organic modified whiskers, 4-10 parts of dopamine modified filler, 1-5 parts of dicumyl peroxide and 0.5-1.5 parts of anti-aging agent.
2. The stretch-resistant rubber water stop according to claim 1, characterized by comprising the following components in parts by weight: 77-83 parts of natural rubber, 17-23 parts of butadiene rubber, 5-7 parts of organic modified whisker, 6-8 parts of dopamine modified filler, 2.5-4.5 parts of dicumyl peroxide and 0.8-1.2 parts of anti-aging agent.
3. The stretch-resistant rubber water stop according to claim 1, wherein: the organic modified whisker is prepared from an organic surface modifier and a whisker material, wherein the whisker material comprises any one of potassium titanate whisker, basalt whisker or anhydrous calcium carbonate whisker.
4. A stretch-resistant rubber waterstop according to claim 3, wherein: the organic surface modifier comprises stearic acid and ethanol.
5. The stretch-resistant rubber water stop belt according to claim 3, wherein the organically modified whisker is prepared by the following steps:
adding the whisker material into an organic surface modifier, heating to 30-50 ℃, preserving heat, reacting for 5-10min, filtering, washing and drying to obtain the organic modified whisker.
6. The stretch-resistant rubber water stop according to claim 1, wherein: the dopamine modified filler is any one of dopamine grafted silicon carbon black, dopamine grafted white carbon black, dopamine grafted carbon nanotube, dopamine grafted calcium carbonate or dopamine grafted kaolin.
7. The stretch-resistant rubber water stop belt according to claim 6, wherein the dopamine modified filler is dopamine grafted silicon carbon black, and the preparation steps of the dopamine grafted silicon carbon black are as follows: dissolving 200-300 parts by weight of dopamine in 500-600 parts by weight of physiological saline to obtain a dopamine solution; adding a Tris reagent into the dopamine solution, and adjusting the pH value to 8-8.8 to obtain a solution to be reacted; adding 100-150 parts by weight of silicon carbon black into the reaction solution, stirring for reaction, filtering, washing and drying to obtain the dopamine grafted silicon carbon black.
8. The stretch-resistant rubber water stop according to claim 1, wherein: the stretch-proofing rubber water stop belt also comprises any one of dioctyl phthalate, dioctyl sebacate or dioctyl adipate.
9. The stretch-resistant rubber water stop according to claim 1, wherein: the preparation steps of the stretch-proof rubber waterstop are as follows:
uniformly mixing natural rubber, butadiene rubber, organic modified whiskers, dopamine modified filler, dicumyl peroxide and an anti-aging agent according to a ratio to obtain a mixed raw material;
banburying the mixed raw materials for 10-20min at 40-60 ℃ to obtain a banburying material;
and pressing the banburying material into a rubber sheet at 70-90 ℃, and shaping the rubber sheet to obtain the stretch-resistant rubber water stop.
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| CN202210722417.3A CN114957815A (en) | 2022-06-24 | 2022-06-24 | Stretch-proofing rubber waterstop |
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| CN202210722417.3A CN114957815A (en) | 2022-06-24 | 2022-06-24 | Stretch-proofing rubber waterstop |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116178848A (en) * | 2023-03-11 | 2023-05-30 | 上海康达电力安装工程有限公司 | Medium-voltage cable intermediate joint material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116178848A (en) * | 2023-03-11 | 2023-05-30 | 上海康达电力安装工程有限公司 | Medium-voltage cable intermediate joint material and preparation method thereof |
| CN116178848B (en) * | 2023-03-11 | 2024-03-29 | 上海康达电力安装工程有限公司 | Medium-voltage cable intermediate joint material and preparation method thereof |
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