CN102516615A - Environmentally-friendly styrene butadiene rubber closed cell secondary foamed material and preparation method thereof - Google Patents
Environmentally-friendly styrene butadiene rubber closed cell secondary foamed material and preparation method thereof Download PDFInfo
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- CN102516615A CN102516615A CN2011103460094A CN201110346009A CN102516615A CN 102516615 A CN102516615 A CN 102516615A CN 2011103460094 A CN2011103460094 A CN 2011103460094A CN 201110346009 A CN201110346009 A CN 201110346009A CN 102516615 A CN102516615 A CN 102516615A
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention relates to an environmentally-friendly styrene butadiene rubber closed cell secondary foamed material and a preparation method thereof. The foaming material is prepared from the following raw materials according to parts by weight: 60-100 parts of styrene butadiene rubber, 1.3-2.2 parts of vulcanizing agent, 0.4-1 part of vulcanizing accelerant, 0.5-1 part of stearic acid, 2.5-5.5 parts of zinc oxide, 3-6.5 parts of foaming agent, 3-6.6 parts of foaming accessory ingredient, 7.5-15.2 parts of palm oil cream, 75-85 parts of reinforcing filler, 25-32 parts of magnesium strong powder, 36-73 parts of light calcium carbonate, 25-54 parts of naphthalene-group softening oil, 1.5-3 parts of dispersing agent, 0.6-1.5 parts of anti- odor oxidant and 0.6-1.5 parts of antioxidant. Compared with the prior art, the halogen-free environmentally-friendly styrene butadiene rubber closed cell secondary foamed material disclosed by the invention is characterized in that the content of the halogen is greatly lowered, which conforms to the requirement of environmental protection. Meanwhile, the environmentally-friendly styrene butadiene rubber closed cell secondary foamed material also has excellent tear resistance, flame resistance, ageing resistance, oil resistance and chemical reagent resistance.
Description
Technical field
The present invention relates to SBR styrene butadiene rubbers (SBR) separated foam foam material, be specifically related to a kind of environment-friendly type SBR (styrene-butadiene rubber(SBR)) closed pore second time of foaming material and preparation method thereof.
Background technology
Present on the market foam material, because content of halogen is higher, thereby foam material can produce hydrogen halide in the time of incendiary, people and animals breathed produce the phenomenon of suffocating, to environment and unfriendly.Simultaneously, existing foam material can not satisfy higher requirement on stretch-proof and tear-resistant performance.Therefore, when researching and developing and making these foam materials, make every effort to reduce the halogens content in the material, make it to become environmentally friendly machine, and also need further to improve stretch-proof and tear-resistant ability.Also do not find at present the report of relevant halogen-free environment-friendly type styrene-butadiene rubber(SBR) closed pore second time of foaming material.
Summary of the invention
The technical problem that the present invention will solve is to overcome the higher shortcoming of content of halogen in the existing foam material, has improved the performances such as tensile strength, tear strength and elasticity of butadiene styrene rubber foaming material.A kind of environment-friendly type butylbenzene rubber closed pore second time of foaming material and preparation method thereof is provided.
Environment-friendly type butylbenzene rubber closed pore second time of foaming material of the present invention is made by following raw materials in weight portion:
60～100 parts in styrene-butadiene rubber(SBR), 1.3～2.2 parts of vulcanizing agents, 0.4～1 part of vulcanization accelerator, 0.5～1 part of Triple Pressed Stearic Acid, 2.5～5.5 parts in zinc oxide, 3～6.5 parts of whipping agents, 3～6.6 parts of frothing aids, 7.5～15.2 parts of brown ointment, 75～85 parts of reinforcing fillers, 25～32 parts in the strong powder of magnesium, 36～73 parts of light calcium carbonates, how 25～54 parts of family's softening oils, 1.5～3 parts of dispersion agents, 0.6～1.5 part of antiozonant, 0.6～1.5 part of protective agent.
Preferably, make by following raw materials in weight portion:
100 parts in styrene-butadiene rubber(SBR), 2.2 parts of vulcanizing agents, 1 part of vulcanization accelerator, 1 part of Triple Pressed Stearic Acid, 5.5 parts in zinc oxide, 6.5 parts of whipping agents, 6.6 parts of frothing aids, 15.2 parts of brown ointment, 80 parts of reinforcing fillers, 28 parts in the strong powder of magnesium, 73 parts of light calcium carbonates, how 54 parts of family's softening oils, 3 parts of dispersion agents, 1.5 parts of antiozonants, 1.5 parts of protective agents.
The present invention also provides the preparation method of described environment-friendly type butylbenzene rubber closed cell foamed material, it is characterized in that, may further comprise the steps:
(1) banburying;
(2) heat refining slice;
(3) extrude filter glue;
Closed pore foaming in (4) first apotypes;
Closed pore foaming, steady shape in (5) second apotypes, then the second time of foaming body is cooled to room temperature and obtains finished product.
Preferably, may further comprise the steps:
(1) banburying
A, with the strong powder of magnesium of the reinforcing filler of styrene-butadiene rubber(SBR), 1/2 proportional quantity, 1/2 proportional quantity, how family's softening oil, light calcium carbonate drop in the Banbury mixer;
B, zinc oxide, Triple Pressed Stearic Acid, protective agent, vulcanizing agent, vulcanization accelerator, frothing aid, brown ointment, antiozonant are dropped in the Banbury mixer and epoxy glue kneading 1～2min;
The strong powder of the magnesium of C, the reinforcing filler that will be left 1/2 proportional quantity, 1/2 proportional quantity drops into kneading 1～2min in the Banbury mixer;
D, whipping agent, dispersion agent are dropped in the Banbury mixer kneading 8～10min that pressurizes then, weight pressure 4～6Kg;
E, the banburying built-in temperature is controlled at 105～110 ℃ when mixing;
F, binder removal, cooling;
(2) heat refining, slice
Sizing material with step (1) after mixing drops into heat refining in the rubber mixing machine, and with thickness 5～8mm slice, cooling is parked 6～20 hours, and then plays the triangle bag, turns refining twice or thrice afterwards with 8～15mm thickness slice, slitting;
(3) extrude filter glue
The film that the slice slitting is good drops in the forcing machine and extrudes filter glue, is extruded into the glue embryo, and the outlet of extruder temperature is controlled to be 40～50 ℃;
Closed pore foaming in (4) first apotypes
The glue embryo extruded cut off to weigh to deliver to carry out first time closed pore in first vulcanizer and foam; 500～700 tons of sulfide stresses; The sulfur foam time is 25～50 minutes, and the sulfur foam temperature is 134 ± 5 ℃, obtains foam material cooling for the first time and carries out the processing of light face;
The closed pore steady shape typing of foaming in (5) second apotypes
Foam is delivered to and is carried out the foaming sulfuration typing second time in second vulcanizer for the first time; 1200～1400 tons of sulfide stresses; Curing time 25～45 minutes; 160 ± 5 ℃ of sulfide stress temperature, the foam cool to room temperature obtains environment-friendly type butylbenzene rubber closed pore second time of foaming finished material for the second time then.
Wherein, more preferably,
The speed of forcing machine is 550 rev/mins in the said step (3).
Sulfide stress is 600 tons in the said step (4), and the sulfur foam time is 32 minutes.
Sulfide stress is 1300 tons in the said step (5), and the sulfur foam time is 35 minutes.
Compared with prior art, halogen-free environment-friendly type styrene-butadiene rubber(SBR) closed cell foamed material of the present invention greatly reduces the content of halogen, detects through SGS, meets the new standard REACH of European Union.The performance that also has good tear strength, tensile strength, flame resistivity, ageing-resistant, oil resistant and chemical-resistant reagent simultaneously, compliance with environmental protection requirements, and have good performance.
Embodiment
Specific embodiments more of the present invention below are provided, understand the present invention to help further, but protection scope of the present invention are not limited in these embodiment.
Embodiment 1
The present embodiment prescription is (annotate: each raw material by weight) as follows
| Sequence number | Starting material | Model or specification | Weight part | Supplier |
| 1 | SBR | 1502 | 100 | Sinopec |
| 2 | Vulcanizing agent | S | 2.2 | Margaret Abbott rubber science and technology |
| 3 | Vulcanization accelerator | M | 1 | Contain the Jinchang, Guangdong |
| 4 | Triple Pressed Stearic Acid | ST | 1 | Margaret Abbott rubber science and technology |
| 5 | Zinc oxide | 98% | 5.5 | Shanghai White stone |
| 6 | Whipping agent | ADC | 6.5 | The Hangzhou marine rainbow |
| 7 | Frothing aid | 101 | 6.6 | Taiwan |
| 8 | The palm fibre ointment | 15.2 | Japan | |
| 9 | Reinforcing filler | Carclazyte | 82 | The U.S. |
| 10 | The strong powder of magnesium | 1808 | 28 | Japan is aboveground |
| 11 | Light calcium carbonate | CaCO3 | 73 | Jiangxi |
| 12 | How family's softening oil | 4006 | 54 | Sinopec |
| 13 | Dispersion agent | DR-A | 3 | Margaret Abbott rubber science and technology |
| 14 | Antiozonant | CD | 1.5 | Suzhou |
| 15 | Protective agent | MB | 1.5 | Germany |
SBR is a styrene-butadiene rubber(SBR).
The preparation method is following:
(1) banburying
A, with SBR, 1/2 proportional quantity reinforcing filler, the strong powder of 1/2 proportional quantity magnesium, how family's softening oil, light calcium carbonate drop in the Banbury mixer;
B, zinc oxide, Triple Pressed Stearic Acid 1801, protective agent, brown ointment, antiozonant, vulcanizing agent, vulcanization accelerator, frothing aid are dropped in the Banbury mixer and epoxy glue kneading 1-2min;
C. will be left the reinforcing filler of 1/2 proportional quantity, the interior kneading 1-2min of the strong powder input of magnesium Banbury mixer of 1/2 proportional quantity;
D, blowing agent AC, dispersion agent are dropped in the Banbury mixer kneading 8-10min that pressurizes then, weight pressure 5KG;
E, the banburying built-in temperature is controlled at 105～110 ℃ when mixing;
F, binder removal cooling.
(2) heat refining, slice
Sizing material after mixing is dropped into heat refining in 22 cun opening rubber mixing machines; And parked 12 hours with thickness 5～8mm slice cooling; And then drop in another 18 cun opening rubber mixing machines and play the triangle bag, turn refining and twice or thrice drop into again in 18 cun opening rubber mixing machines with 8～15mm thickness slice, slitting;
(3) extrude filter glue
Film that the slice slitting is good drops in the model 250 model forcing machine and extrudes filter glue, is extruded into the glue embryo, the outlet of extruder temperature is controlled to be 40～50 ℃, and rotating speed is 550 rev/mins,
Closed pore foaming in (4) first apotypes
The glue embryo extruded cut off to weigh to deliver to carry out closed pore foaming first time in the vulcanizing press, 500 tons of sulfide stresses, the sulfur foam time is 32 minutes, the sulfur foam temperature is 134 ± 5 ℃, obtains foam material cooling for the first time and carries out the processing of light face,
The closed pore steady shape typing of foaming in (5) second apotypes
With the first time foam deliver to and carry out the foaming sulfuration typing second time in 600 tons the vulcanizing press; 1300 tons of sulfide stresses; Curing time 35 minutes, 160 ± 5 ℃ of sulfide stress temperature, the foam cool to room temperature obtains halogen-free environment-friendly type SBR closed pore second time of foaming finished material for the second time then.
The environment-friendly type butylbenzene rubber closed pore second time of foaming material physical property test result of gained of the present invention
Present embodiment environment-friendly type SBR closed cell foamed material SGS halogens test report:
| Test event | Content (mg/kg) | Method detection limit (mg/kg) |
| Naphthalene * (Nap) | N.D | 0.2 |
| Acenaphthylene (Acpy) | N.D | 0.2 |
| Acenaphthene (Acp) | N.D | 0.2 |
| Fluorenes (Flu) | N.D | 0.2 |
| Luxuriant and rich with fragrance (PA) | ||
| Anthracene (Ant) | N.D | 0.2 |
| Fluoranthene (FL) | N.D | 0.2 |
| Pyrene (Pyr) | N.D | 0.2 |
| Benzo (a) anthracene (BaA) | N.D | 0.2 |
| Bend (CHR) | N.D | 0.2 |
| Benzo (b) fluoranthene (BbF) | N.D | 0.2 |
| Benzo (k) fluoranthene (BkF) | N.D | 0.2 |
| Benzo (ghi) pyrene (Bghip) | N.D | 0.2 |
| Dibenzo (a, h) anthracene (DBAh) | N.D | 0.2 |
| The indenes benzo (1,2,3-cd) pyrene (IND) | N.D | 0.2 |
| Benzo (a) pyrene (BaP) | N.D | 0.2 |
| 16 kinds of PAHs total amounts | N.D | ---- |
(note: 1.mg/kg=PPM=parts per million; 2.N.D=Not the Detected end detects (less than the method detection limit); 3. "---"=no standard)
| Test event | Content (mg/kg) | Method detection limit (mg/kg) |
| Fluorine (F) | N.D | 50 |
| Chlorine (C1) | N.D | 50 |
| Bromine (Br) | N.D | 50 |
| Iodine (I) | N.D | 50 |
(note: 1.mg/kg=PPM=parts per million; 2.N.D=Not the Detected end detects (less than the method detection limit))
SBR elastomeric polymer molecule structure is different with the polymerization situation; Can make through rational prescription and preparation technology have good tear strength, characteristic such as tensile strength, flame resistivity, ageing-resistant performance and the performance of good oil resistant, anti-solvent and chemical-resistant reagent is arranged; Visible by last three parts of examining reports; Halogens in the halogen-free environment-friendly type styrene-butadiene rubber(SBR) closed pore second time of foaming material of manufacturing of the present invention detects and does not all detect, and meets the new standard REACH of European Union.Reach the needed environmental requirement of material, and the tensile strength of this material is high, tear resistance is good.Can be widely used in using in the severe rugged environment condition.Have good social benefit and economic benefit.
Embodiment 2
The present embodiment prescription is (annotate: each raw material by weight) as follows
| Sequence number | Starting material | Model or specification | Weight part | Supplier |
| 1 | SBR | 1502 | 100 | Sinopec |
| 2 | Vulcanizing agent | S | 2.2 | Margaret Abbott rubber science and technology |
| 3 | Vulcanization accelerator | M | 1 | Contain the Jinchang, Guangdong |
| 4 | Triple Pressed Stearic Acid | ST | 1 | Margaret Abbott rubber science and technology |
| 5 | Zinc oxide | 98% | 5.5 | Shanghai White stone |
| 6 | Whipping agent | ADC | 6.5 | Contain the Jinchang, Guangdong |
| 7 | Frothing aid | 101 | 6.6 | Taiwan |
| 8 | The palm fibre ointment | 15.2 | Japan | |
| 9 | Reinforcing filler | Carclazyte | 75 | The U.S. |
| 10 | The strong powder of magnesium | 1808 | 25 | Japan is aboveground |
| 11 | Light calcium carbonate | CaCO3 | 73 | Jiangxi |
| 12 | How family's softening oil | 4006 | 54 | Sinopec |
| 13 | Dispersion agent | DR-A | 3 | Margaret Abbott rubber science and technology |
| 14 | Antiozonant | CD | 1.5 | Suzhou |
| 15 | Protective agent | MB | 1.5 | Germany |
The preparation method is with embodiment 1
Embodiment 3
The present embodiment prescription is (annotate: each raw material by weight) as follows
| Sequence number | Starting material | Model or specification | Weight part | Supplier |
| 1 | SBR | 1502 | 100 | Sinopec |
| 2 | Vulcanizing agent | S | 2.2 | Margaret Abbott rubber science and technology |
| 3 | Vulcanization accelerator | M | 1 | Contain the Jinchang, Guangdong |
| 4 | Triple Pressed Stearic Acid | ST | 1 | Margaret Abbott rubber science and technology |
| 5 | Zinc oxide | 98% | 5.5 | Shanghai White stone |
| 6 | Whipping agent | ADC | 6.5 | Contain the Jinchang, Guangdong |
| 7 | Frothing aid | 101 | 6.6 | Taiwan |
| 8 | The palm fibre ointment | 15.2 | Japan | |
| 9 | Reinforcing filler | Carclazyte | 85 | The U.S. |
| 10 | The strong powder of magnesium | 1808 | 32 | Japan is aboveground |
| 11 | Light calcium carbonate | CaCO3 | 73 | Jiangxi |
| 12 | How family's softening oil | 4006 | 54 | Sinopec |
| 13 | Dispersion agent | DR-A | 3 | Margaret Abbott rubber science and technology |
| 14 | Antiozonant | CD | 1.5 | Suzhou |
| 15 | Protective agent | MB | 1.5 | Germany |
The preparation method is with embodiment 1.
The foregoing description is a preferred implementation of the present invention; But embodiment of the present invention is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. environment-friendly type butylbenzene rubber closed pore second time of foaming material is characterized in that, is made by following raw materials in weight portion:
75～85 parts in 60～100 parts in styrene-butadiene rubber(SBR), 1.3～2.2 parts of vulcanizing agents, 0.4～1 part of vulcanization accelerator, 0.5～1 part of Triple Pressed Stearic Acid, 2.5～5.5 parts in zinc oxide, 3～6.5 parts of whipping agents, 3～6.6 parts of frothing aids, 7.5～15.2 parts of brown ointment, reinforcing filler (, 25～32 parts in the strong powder of magnesium (, 36～73 parts of light calcium carbonates, how 25～54 parts of family's softening oils, 1.5～3 parts of dispersion agents, 0.6～1.5 part of antiozonant, 0.6～1.5 part of protective agent.
2. environment-friendly type butylbenzene rubber closed cell foamed material according to claim 1 is characterized in that, is made by following raw materials in weight portion:
100 parts in styrene-butadiene rubber(SBR), 2.2 parts of vulcanizing agents, 1 part of vulcanization accelerator, 1 part of Triple Pressed Stearic Acid, 5.5 parts in zinc oxide, 6.5 parts of whipping agents, 6.6 parts of frothing aids, 15.2 parts of processing aids, 82 parts of reinforcing fillers, 28 parts in the strong powder of magnesium, 73 parts of light calcium carbonates, how 54 parts of family's softening oils, 3 parts of dispersion agents, 1.5 parts of antiozonants, 1.5 parts of protective agents.
3. the preparation method of claim 1 or 2 described environment-friendly type butylbenzene rubber closed cell foamed materials is characterized in that, may further comprise the steps:
(1) banburying;
(2) heat refining slice;
(3) extrude filter glue;
Closed pore foaming in (4) first apotypes;
Closed pore foaming, steady shape in (5) second apotypes, then the second time of foaming body is cooled to room temperature and obtains finished product.
4. the preparation method of environment-friendly type butylbenzene rubber closed cell foamed material according to claim 3 is characterized in that, may further comprise the steps:
(1) banburying
A, with the strong powder of magnesium of the reinforcing filler of styrene-butadiene rubber(SBR), 1/2 proportional quantity, 1/2 proportional quantity, how in family's softening oil, light calcium carbonate, the input Banbury mixer;
B, zinc oxide, Triple Pressed Stearic Acid, protective agent, vulcanizing agent, vulcanization accelerator, frothing aid, brown ointment, antiozonant are dropped in the Banbury mixer and epoxy glue kneading 1～2min;
The strong powder of the magnesium of C, the reinforcing filler that will be left 1/2 proportional quantity, 1/2 proportional quantity drops into kneading 1～2min in the Banbury mixer;
D, whipping agent, dispersion agent are dropped in the Banbury mixer kneading 8～10min that pressurizes then, weight pressure 4～6Kg;
E, the banburying built-in temperature is controlled at 105～110 ℃ when mixing;
F, binder removal, cooling;
(2) heat refining, slice
Sizing material with step (1) after mixing drops into heat refining in the rubber mixing machine, and with thickness 5～8mm slice, cooling is parked 6～20 hours, and then plays the triangle bag, turns refining twice or thrice afterwards with 8～15mm thickness slice, slitting;
(3) extrude filter glue
The film that the slice slitting is good drops in the forcing machine and extrudes filter glue, is extruded into the glue embryo, and the outlet of extruder temperature is controlled to be 40～50 ℃;
Closed pore foaming in (4) first apotypes
The glue embryo extruded cut off to weigh to deliver to carry out first time closed pore in first vulcanizer and foam; 500～700 tons of sulfide stresses; The sulfur foam time is 25～50 minutes, and the sulfur foam temperature is 134 ± 5 ℃, obtains foam material cooling for the first time and carries out the processing of light face;
The closed pore steady shape typing of foaming in (5) second apotypes
Foam is delivered to and is carried out the foaming sulfuration typing second time in second vulcanizer for the first time; 1200～1400 tons of sulfide stresses; Curing time 25～45 minutes; 160 ± 5 ℃ of sulfide stress temperature, the foam cool to room temperature obtains environment-friendly type butylbenzene rubber closed pore second time of foaming finished material for the second time then.
5. environment-friendly type butylbenzene rubber closed pore second time of foaming preparation methods according to claim 4 is characterized in that, the speed of forcing machine is 550 rev/mins in the said step (3).
6. terpolymer EP rubber according to claim 4 and modified chloroprene rubber with the preparation method of secondary closed cell foamed material, is characterized in that also sulfide stress is 600 tons in the said step (4), and the sulfur foam time is 32 minutes.
7. terpolymer EP rubber according to claim 4 and modified chloroprene rubber with the preparation method of secondary closed cell foamed material, is characterized in that also sulfide stress is 1300 tons in the said step (5), and the sulfur foam time is 35 minutes.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109810509A (en) * | 2018-12-29 | 2019-05-28 | 易宝（福建）高分子材料股份公司 | One kind thermal contraction silicon rubber resistant to high temperatures and EVA rubber plastic blend closed pore molding high temperature second time of foaming material and preparation method thereof |
| CN111171415A (en) * | 2019-12-31 | 2020-05-19 | 易宝（福建）高分子材料股份公司 | Large-size non-standard SBR (styrene butadiene rubber) blended closed-cell secondary die-pressing foaming material and preparation method thereof |
| CN114350041A (en) * | 2021-12-31 | 2022-04-15 | 易宝（福建）高分子材料股份公司 | Styrene butadiene rubber reclaimed material closed-cell secondary foam material and preparation method thereof |
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| CN101255242A (en) * | 2008-04-14 | 2008-09-03 | 常州市天晟塑胶化工有限公司 | Butadiene styrene rubber foaming plate and preparation thereof |
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| CN102206384A (en) * | 2011-05-10 | 2011-10-05 | 易宝(福建)高分子材料有限公司 | Halogen-free environment-friendly ethylene propylene diene monomer (EPDM) rubber closed hole foam material and preparation method thereof |
| CN102219946A (en) * | 2011-05-10 | 2011-10-19 | 易宝(福建)高分子材料有限公司 | Low-halogen environment-friendly chloroprene rubber (CR) closed-cell foam material and preparation method thereof |
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