CN103589021A - High-performance water-swellable chloroprene rubber - Google Patents
High-performance water-swellable chloroprene rubber Download PDFInfo
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- CN103589021A CN103589021A CN201310505082.0A CN201310505082A CN103589021A CN 103589021 A CN103589021 A CN 103589021A CN 201310505082 A CN201310505082 A CN 201310505082A CN 103589021 A CN103589021 A CN 103589021A
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Abstract
The invention discloses a high-performance water-swellable chloroprene rubber which is prepared from the following raw materials in parts by weight: 80-120 parts of chloroprene rubber, 5-10 parts of activating agent, 1-3 parts of anti-aging agent, 30-50 parts of reinforcing filler, 1-5 parts of vulcanization accelerator, 0.5-2.5 parts of sublimed sulfur, 30-70 parts of water-absorbing resin, 5-20 parts of water-absorbing assistant, 5-20 parts of bulking agent and 1-5 parts of organic peroxide. The water-swellable rubber has the advantages of stable performance, strong acting force between the rubber base and water-absorbing resin, low shedding tendency of water-absorbing resin, higher water absorptivity, favorable compatibility between the water-absorbing resin and rubber, and small expansion ratio change after repeated water absorption, and can satisfy the requirements for simple production technique and low production cost.
Description
Technical field
The invention belongs to rubber technology field, be specifically related to a kind of high-performance water-swelling chloroprene rubber.
Background technology
Water swelling rubber (Water Swelling Rubber is called for short WSR) is a kind of new functional macromolecule material of being developed by Japan the phase at the end of the seventies in last century.The patent of invention that Japanese Xu electricity Chemical Co., Ltd in 1976 has applied for water swelling rubber first.WSR introduces hydrophilic radical or hydrophilic component and makes in traditional elastic matrix (as rubber and thermoplastic elastomer), the inflatable several times to sole mass or volume and even hundreds of times after the water suction of this product, can be out of shape by commensurate structure, and the larger swelling pressure of generation, when keeping the elasticity and intensity of matrix, also there is the ability of water conservation sealing.Water swelling rubber is as a kind of new type functional material, since 20 century 70s come out, because its unique performance is widely used in tunnel, subway, culvert, swimming pool, vault, weapons storehouse, silo, underwater engineering, offshore oil production, urban water supply facility and covil construction, also can be used for the waterproof and dampproof packing of vehicle rack container, precision instrument and food etc.
At present, existing water swelling rubber is deposited with unstable properties, water-absorbing resin and is difficult to disperse and the high defect of production cost in rubber.Water swelling rubber is mainly prepared gained by rubber and water-absorbing resin two components by physical mechanical blend, and because the polarity of rubber is low, wetting ability is poor, and water-absorbing resin good hydrophilic property, polarity is strong, causes both consistencies poor.Industrial the most frequently used method is to utilize physical blending method to prepare water swelling rubber (being that hydrophilic component and rubber matrix carry out blend), because the character between hydrophilic component and rubber differs larger, make hydrophilic component be easy to separate out, thereby lowered water absorbing properties and the mechanical property of water swelling rubber.Therefore with expanding material, improve the bonding force between absorbent composition and rubber, improving hydrophilic component, to separate out problem be the more popular research in this area.
Summary of the invention
The object of this invention is to provide that a kind of manufacturing technique requirent is low, rate of expansion is stable and the high-performance water-swelling chloroprene rubber of good processability.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
A water-swelling chloroprene rubber, is prepared from by the raw material of following parts by weight:
80～120 parts of chloroprene rubbers, 5～10 parts of promoting agents, 1～3 part, anti-aging agent, 30～50 parts of reinforced fillings, 1～5 part of vulcanization accelerator, 0.5～2.5 part of sublimed sulphur, 30～70 parts of water-absorbing resins, 5～20 parts of auxiliary agents of water suction, 5～20 parts of expanding materials, 1～5 part of organo-peroxide.
As improvement of the present invention, a kind of high-performance water-swelling chloroprene rubber is prepared from by the raw material of following parts by weight:
100 parts of chloroprene rubbers, 8 parts of promoting agents, 2 parts, anti-aging agent, 40 parts of reinforced fillings, 3 parts of vulcanization accelerators, 1.5 parts of sublimed sulphurs, 50 parts of water-absorbing resins, 10 parts of auxiliary agents of water suction, 10 parts of expanding materials, 33 parts of organo-peroxides.
Above-mentioned promoting agent is the mixture of stearic acid and zinc oxide.
Above-mentioned anti-aging agent is selected any one in antioxidant D, antioxidant 4010NA, antioxidant D NP.
Above-mentioned reinforced filling is carbon black and the white carbon black of weight ratio 1:1, and wherein carbon black is natural gas-based channel black, and white carbon black is gas-phase silica.
Above-mentioned vulcanization accelerator is thiazole accelerator and the accelerant CZ of weight ratio 1:1, and wherein thiazole accelerator is altax or captax.
Above-mentioned water-absorbing resin is selected sodium polyacrylate or Lithium polyacrylate.
Above-mentioned organo-peroxide is dicumyl peroxide, dibenzoyl peroxide, ditertiary butyl peroxide or 2,5-dimethyl-2,5-di-t-butyl peroxide hexane.
Compared with prior art, beneficial effect of the present invention is as follows:
Performances of water-swelling rubber of the present invention is stable, reactive force between glue rubber matrix and water-absorbing resin is strong, water-absorbing resin difficult drop-off, water absorbent rate increases, the consistency of water-absorbing resin and rubber is good, after water suction, rate of expansion changes littlely repeatedly, has the advantages that good processability and production cost are low, can meet that production technique is simple, the requirement of low production cost.
Embodiment
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art should understand, described embodiment only, for helping to understand the present invention, should not be considered as concrete restriction of the present invention.
Embodiment 1
A water-swelling chloroprene rubber, the weight part of each component is:
100 parts of chloroprene rubbers, 8 parts of promoting agents, 2 parts of antioxidant 4010NAs, 40 parts of reinforced fillings, 3 parts of vulcanization accelerators, 1.5 parts of sublimed sulphurs, 50 parts of water-absorbing resin sodium polyacrylates, 10 parts of auxiliary agents of water suction, 10 parts of expanding materials, 33 parts of organo-peroxides.
Preparation method comprises the following steps:
Chloroprene rubber thin-pass bag roller in mill being plasticated after 1min, add successively promoting agent, sublimed sulphur, anti-aging agent, water suction auxiliary agent, is under 2mm, to open refining 3min in roll spacing; Add water-absorbing resin mixing evenly, then to add reinforced filling be on 3mm, to open refining 10min in roll spacing; Add expanding material mixing evenly, finally vulcanization accelerator being added to mixing in rubber matrix is evenly under 0.4mm, to play triangle bag 6 times in roll spacing, thin-pass, lower, and the standing chloroprene rubber that obtains mixing for 4 hours is standby; The chloroprene rubber mixing is vulcanized to 15min die sinking, the water-swelling chloroprene rubber that obtains vulcanizating on vulcanizing press under 160 ℃, 10Mpa condition.
Its property indices of expanded rubber is as follows:
One, physical and mechanical properties:
Hardness: 65-80 Shao Shi A;
Tensile strength at yield: 5-9mpa;
Tensile yield: 300-700%;
Two, soak test
Test conditions: under 80 degree conditions, in 12% calcium chloride water, after 4 days,
1, the outside dimension of original prod is 5.5cm, and internal diameter size is that 3cm entity width is 1.2cm; Outside dimension after product expands is 7.2cm, and internal diameter size is that 3.8cm entity width is 1.7cm; Be the diametric(al) wall thickness 5mm that expanded;
2, to be of a size of cross section diameter be 5.5cm to original prod, and diameter of bore is 3cm, is highly 0.8cm; It is 7.2cm that product is of a size of cross section diameter after expanding, and diameter of bore is 3.8cm, is highly 1.2cm.
Embodiment 2
A water-swelling chloroprene rubber, is prepared from by the raw material of following parts by weight:
120 parts of chloroprene rubbers, 10 parts of promoting agents, 3 parts, anti-aging agent, 50 parts of reinforced fillings, 5 parts of vulcanization accelerators, 2.5 parts of sublimed sulphurs, 70 parts of water-absorbing resins, 20 parts of auxiliary agents of water suction, 20 parts of expanding materials, 5 parts of organo-peroxides.
Preparation process is same as embodiment 1.
Embodiment 3
A water-swelling chloroprene rubber, is prepared from by the raw material of following parts by weight:
80 parts of chloroprene rubbers, 5 parts of promoting agents, 1 part, anti-aging agent, 30 parts of reinforced fillings, 1 part of vulcanization accelerator, 0.5 part of sublimed sulphur, 30 parts of water-absorbing resins, 5 parts of auxiliary agents of water suction, 5 parts of expanding materials, 1 part of organo-peroxide.
Preparation process is same as embodiment 1.
Applicant's statement, person of ordinary skill in the field is on the basis of above-described embodiment, by the concrete content point value of above-described embodiment component, combined with the technical scheme of summary of the invention part, thereby the new numerical range producing, also be one of record scope of the present invention, the application, for making specification sheets simple and clear, is no longer enumerated these numerical ranges.
Claims (8)
1. a high-performance water-swelling chloroprene rubber, is characterized in that being prepared from by the raw material of following parts by weight:
80～120 parts of chloroprene rubbers, 5～10 parts of promoting agents, 1～3 part, anti-aging agent, 30～50 parts of reinforced fillings, 1～5 part of vulcanization accelerator, 0.5～2.5 part of sublimed sulphur, 30～70 parts of water-absorbing resins, 5～20 parts of auxiliary agents of water suction, 5～20 parts of expanding materials, 1～5 part of organo-peroxide.
2. a kind of high-performance water-swelling chloroprene rubber as claimed in claim 1, is characterized in that being prepared from by the raw material of following parts by weight:
100 parts of chloroprene rubbers, 8 parts of promoting agents, 2 parts, anti-aging agent, 40 parts of reinforced fillings, 3 parts of vulcanization accelerators, 1.5 parts of sublimed sulphurs, 50 parts of water-absorbing resins, 10 parts of auxiliary agents of water suction, 10 parts of expanding materials, 33 parts of organo-peroxides.
3. a kind of high-performance water-swelling chloroprene rubber as claimed in claim 1, is characterized in that: described promoting agent is the mixture of stearic acid and zinc oxide.
4. a kind of high-performance water-swelling chloroprene rubber as claimed in claim 1, is characterized in that: described anti-aging agent is selected any one in antioxidant D, antioxidant 4010NA, antioxidant D NP.
5. a kind of high-performance water-swelling chloroprene rubber as claimed in claim 1, is characterized in that: described reinforced filling is carbon black and the white carbon black of weight ratio 1:1, and wherein carbon black is natural gas-based channel black, and white carbon black is gas-phase silica.
6. a kind of high-performance water-swelling chloroprene rubber as claimed in claim 1, is characterized in that: described vulcanization accelerator is thiazole accelerator and the accelerant CZ of weight ratio 1:1, and wherein thiazole accelerator is altax or captax.
7. a kind of high-performance water-swelling chloroprene rubber as claimed in claim 1, is characterized in that: described water-absorbing resin is selected sodium polyacrylate or Lithium polyacrylate.
8. a kind of high-performance water-swelling chloroprene rubber as claimed in claim 1, is characterized in that: described organo-peroxide is dicumyl peroxide, dibenzoyl peroxide, ditertiary butyl peroxide or 2,5-dimethyl-2 5-di-t-butyl peroxide hexane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310505082.0A CN103589021A (en) | 2013-10-24 | 2013-10-24 | High-performance water-swellable chloroprene rubber |
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| CN201310505082.0A CN103589021A (en) | 2013-10-24 | 2013-10-24 | High-performance water-swellable chloroprene rubber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113004580A (en) * | 2019-12-22 | 2021-06-22 | 上海清远管业科技股份有限公司 | Fatigue-resistant water-swellable rubber and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450105A (en) * | 2003-04-29 | 2003-10-22 | 上海交通大学 | High-performace water-absorbing expansion rubber and process for preparing same |
| CN103333377A (en) * | 2013-07-26 | 2013-10-02 | 武汉工程大学 | Water-swelling nitrile rubber and preparation method thereof |
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- 2013-10-24 CN CN201310505082.0A patent/CN103589021A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450105A (en) * | 2003-04-29 | 2003-10-22 | 上海交通大学 | High-performace water-absorbing expansion rubber and process for preparing same |
| CN103333377A (en) * | 2013-07-26 | 2013-10-02 | 武汉工程大学 | Water-swelling nitrile rubber and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113004580A (en) * | 2019-12-22 | 2021-06-22 | 上海清远管业科技股份有限公司 | Fatigue-resistant water-swellable rubber and preparation method thereof |
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Application publication date: 20140219 |