CN102432944B - Crosslinked modified elastomer composite, elastomer flexible pipe, and preparation method for flexible pipe - Google Patents
Crosslinked modified elastomer composite, elastomer flexible pipe, and preparation method for flexible pipe Download PDFInfo
- Publication number
- CN102432944B CN102432944B CN2011103294840A CN201110329484A CN102432944B CN 102432944 B CN102432944 B CN 102432944B CN 2011103294840 A CN2011103294840 A CN 2011103294840A CN 201110329484 A CN201110329484 A CN 201110329484A CN 102432944 B CN102432944 B CN 102432944B
- Authority
- CN
- China
- Prior art keywords
- flexible pipe
- vinyl
- cross
- vinyl acetate
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
-
- 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
- B29C2948/92514—Pressure
-
- 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
- B29C2948/926—Flow or feed rate
-
- 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
Abstract
The invention discloses a crosslinked modified elastomer composite, a flexible pipe which is prepared from the elastomer composite, and a preparation method for the elastomer flexible pipe. The crosslinked modified elastomer composite consists of ethylene-vinyl acetate copolymer, vinylsilane, organic peroxide, a catalyst, phenolic antioxidant, and silicone lubricating grease in a certain proportion; and a novel elastomer flexible pipe is prepared by extruding the elastomer composite which is used as a raw material by an extruder, and performing hydrolizing and crosslinking reaction. During production of the flexible pipe, the production efficiency of the flexible pipe is greatly improved in a negative-pressure sizing forming mode which increases air gaps. The hot strength, corrosion resistance, and the environmental stress cracking resistance of the prepared elastomer flexible pipe are greatly improved, and the elastomer flexible pipe has wide application prospect.
Description
Technical field
The present invention relates to a kind of cross-linking modified elastic composition and relate to a kind of with this cross-linking modified elastic composition elastomeric hose that is feedstock production and preparation method thereof.
Background technology
Be used for the flexible pipe that fluid is carried in the existing market, substantially by starting material manufacturings such as PVC, LDPE or EPDM.In this class flexible pipe, the PVC sanitation performance is not good, and stronger peculiar smell is arranged usually, is not suitable for tap water and carries; The sanitation performance of LDPE and EPDM flexible pipe is better, but the thermotolerance deficiency can only be used for cold water and carry.
Chinese patent literature CN1269895C discloses a kind of low-pollution hose and has been used for the production method of the rubber combination of this flexible pipe, and its rubber combination is by additive mixing forming in mixing roll of rubber, peroxide vulcanizing agent, layered crystal structure.Its production method is that the rubber combination after mixing is coated on the metal mandrel through extruding, and obtains flexible pipe through extracting plug out behind the vulcanization crosslinking again.Its product is mainly used in the conveying of polarity electrolytic solution, and sanitation performance is relatively poor.
Chinese patent application file CN101323174A discloses a kind of production method of silane crosslinked polyethylene pipes, two steps of its production technique: organosilane crosslinked polyethylene, initiator, processing aid are pressed to certainty ratio adding high-speed mixer earlier, be extruded into pipe through adding single screw extrusion machine again after mixing.Its innovation part is to have added one section transformation section with backflow functionality between the homogenizing zone of single screw rod and fluxing zone, to increase the solution melting effect.
In a word, the weak point of disclosed tubing is in the prior art, and the sanitation performance that has is poor, poor heat resistance, and corrosion resistance nature is also low, and its preparation method technology is complicated, the cost height.
Summary of the invention
One of purpose of the present invention provides a kind of cross-linking modified elastic composition, and this connection modified elastomer composition can be used for preparing a kind of resistance toheat and the more excellent elastomeric hose of corrosion resistance nature.
The technical scheme that realizes above-mentioned purpose is as follows:
A kind of cross-linking modified elastic composition, made by the raw material of following weight part:
100 parts of vinyl-vinyl acetate copolymers,
1～2 part of vinyl silanes,
0.1～0.8 part of organo-peroxide,
0.1～0.4 part of phenols,
0.1～0.2 part of dibutyl tin laurate,
0.1～0.5 part of silicone lubricating grease.
Preferably, the parts by weight of raw materials of described cross-linking modified elastic composition is:
100 parts of vinyl-vinyl acetate copolymers,
1.4～1.6 parts of vinyl silanes,
0.3～0.7 part of organo-peroxide,
0.15～0.3 part of phenols,
0.1～0.16 part of dibutyl tin laurate,
0.1～0.3 part of silicone lubricating grease.
Preferably, described vinyl silanes is wherein one or more mixtures of vinyltrimethoxy silane, vinyltriethoxysilane, vinyl methyl dimethoxysilane, vinyl methyldiethoxysilane.
Preferably, described organo-peroxide is wherein one or more mixtures of tertbutyl peroxide, benzoyl peroxide, two tert-butyl peroxy isopropyl benzenes.
Preferably, described vinyl-vinyl acetate copolymer is 25%～30% multipolymer for the vinyl acetate weight percentage, and most preferably the vinyl acetate weight percentage is 28% multipolymer.
Preferably, described phenols be section come benefactor department 168,1076, the trade mark one or more mixtures wherein such as 1010,264 of CiBa company.
It is the elastomeric hose of feedstock production that another object of the present invention provides more than one cross-linking modified elastic compositions of stating, this flexible pipe has fabulous hot strength, rotproofness, environmental stress cracking resistance, can be widely used in chemical liquid and carry and the Building Cooling water system.
The technical scheme that realizes above-mentioned purpose is as follows:
A kind of elastomeric hose is feedstock production with above-mentioned cross-linking modified elastic composition, and it has solid netted molecular structure, and molecule crosslinked degree is 65%-85%, is 60～100IRHD 20-30 ℃ of its Shao Shi hardness.
The present invention also has a purpose to provide the preparation method of above-mentioned elastomeric hose.
The technical scheme that realizes above-mentioned purpose is as follows:
A kind of preparation method of elastomeric hose may further comprise the steps:
A, the raw material that takes by weighing cross-linking modified elastic composition in proportion mix, and obtain cross-linking modified elastic composition;
B, under 190 ℃～210 ℃ temperature range, the cross-linking modified elastic composition among the step a is squeezed into tubing, extruded velocity is 5m/min～45m/min;
C, with the crosslinked hydrolysis 8～20 hours under 80～100 ℃ water or water vapor condition of the tubing of step b gained.
Preferably, the extruded velocity of control tubing is 25m/min～45m/min among the described step b, the tube forming mode is the moulding of negative pressure sizing, control pressure is-0.05～-0.15MPa, the calibration sleeve internal diameter in the negative pressure sizing shaped device is than the big 4～6mm of external diameter of the elastomeric hose of the moulding of wanting.
Advantage of the present invention and positively effect
1, the cross-linking modified elastic composition of the selected manufacturing elastomeric hose of the present invention starting material, through cross-linking modified processing, hot strength, rotproofness, the environmental stress cracking resistance of elastomeric hose are significantly improved, prepared elastomeric hose, except maintenance splendid flexibility and sanitation performance, naked pipe can be under 60 ℃ of temperature, and 1MPa can be widely used in chemical liquid and carry and the Building Cooling water system with life-time service under the interior condition;
2, common rubber PVC, raw materials such as LDPE are higher because of melting surface viscosity, when producing flexible pipe, be generally and guarantee that pipe is even, cool off and employing malleation sizing mode moulding production, this method pipe and calibration sleeve internal surface fit tightly, frictional force is big, production rate generally is limited in below the 25m/min, and the present invention adopts the negative pressure sizing molding mode of clearance when producing flexible pipe, use support roller to support flexible pipe in the vacuum chamber, spray-type cooling, calibration sleeve internal diameter are than the big 4-6mm of tube outer diameter of the moulding of wanting, when pipe passes through calibration sleeve, form the air lubrication gap about 2-3mm between tube surfaces and the calibration sleeve, frictional force between pipe and calibration sleeve is reduced to zero, increased substantially the production rate of elastomeric hose, thereby can realize the high-speed production of 25m/min～45m/min;
3, through the elastomeric hose after cross-linking modified, compare with flexible pipes such as general on the market PVC, LDEP, EPDM, can be extended to cold and hot water supply system for building, the line of pipes of fluids such as beverage, drinks, milk in the foodstuffs industry, the fluid feed line of chemical industry, petroleum industry, new Application Areass such as refrigeration system and water treatment system pipeline;
4, formula for raw stock system involved in the present invention is applicable to common syllogic or four-part form single screw extrusion machine, and production unit is not had particular requirement, the production efficiency height, and technology is simple.
Embodiment
Below in conjunction with embodiment, the present invention is further elaborated.
The density of vinyl-vinyl acetate copolymer of the present invention detects≤0.955g/cm by the method for GB/T1033-1986 regulation
3The method that its melting index is stipulated according to GB/T3682 detects and is 4.0g/10min～7.0g/10min, the vinyl acetate weight percentage that is specially Japanese eastern Cao company is 26% Nipoflex 634, the vinyl acetate weight percentage of SUMITOMO CHEMICAL company is 28% Sumitate KA-31, the vinyl acetate weight percentage of Mitsui company is 28% Evaflex 260, the vinyl acetate weight percentage of France atropic Fei Na company is 28% Evatane28-05, the vinyl acetate weight percentage of Hyundai company is that the vinyl acetate weight percentage of 28% VA600 and Taiwan plastic cement is any one among 26% the 7470M, and wherein most preferably the vinyl acetate weight percentage is 28% multipolymer.
Embodiment 1
Preparation DN is 8mm, and wall thickness is the cross-linking modified elastomeric hose of 1.8mm.
The cross-linking modified elastic composition of present embodiment adopts following weight part feedstock production:
Ethene-vinyl acetate copolymer VA600 (Hyundai company, vinyl acetate content 28%) 100Kg,
Vinyltrimethoxy silane (Degussa company, trade mark VTMO) 1.5Kg,
Two tert-butyl peroxy isopropyl benzene 0.6Kg,
Phenols (Clariant company, the trade mark 168) 0.2Kg,
Dibutyl tin laurate (Dow Corning Corporation, trade mark D-22) 0.13Kg,
Silicone lubricating grease (3M company, trade mark PPA) 0.2Kg.
Prepare flexible pipe with above-mentioned cross-linking modified elastic composition in accordance with the following methods:
A, resulting cross-linking modified elastic composition is mixed;
B, the cross-linking modified elastic composition among the step a is joined in single spiro rod reaction forcing machine (model SJ-80/30), under 210 ℃ temperature, be squeezed into tubing, extruded velocity is 42m/min, the control pressure of negative pressure sizing moulding is-0.1MPa, use support roller to support flexible pipe in the vacuum apparatus, the spray water cooling, the calibration sleeve internal diameter of control forcing machine is 15.8mm;
C, the tubing of step b gained was handled 8 hours in 100 ℃ of water vapors, making the linear polymeric material transition is three-dimensional netted crosslinked macromolecular material.
Cross-linking modified elastomeric hose to method for preparing is tested, the result is as follows: degree of crosslinking 70% (detecting by the GB/T18474-2001 prescriptive procedure), Shao Shi hardness 69IRHD (detecting by the ISO7619-97 prescriptive procedure) under the normal temperature, breaking tenacity 14MPa (detecting by the GB/T1040-92 prescriptive procedure), tension set 880% (detecting by the GB1040-92 prescriptive procedure), vertical relaxation shrinkage＜3% (detecting by B law regulation among the GB/T6691-2001), after flexible pipe weaves through stainless steel, by 90 ℃, 1.2MPa, 168h test and 1h, 3MPa, 95 ℃ of quiet interior tests of pressing are through physical and chemical testing, flexible pipe use temperature-40 ℃～110 ℃.
Compare with the prepared cross-linking modified elastomeric hose of present embodiment and the flexible pipe performance of uncrosslinked modification, comparing result is as follows:
Elastomeric hose after table 1 is cross-linking modified and unmodified elastomeric hose performance comparison
| After crosslinked | Before crosslinked | Measuring method/condition | |
| Vicat softening point | 89℃ | 81℃ | EN ISO 306 |
| 120 ℃ of thermal ageing 168h back draft strength retentions | 96％ | 0 | GB 1040 |
| Extension at break conservation rate behind 120 ℃ of thermal ageing 168h | 79％ | 0 | GB 1040 |
| The active environment stress cracking | 1000h has 10% to split | 4h all splits | ISO 4599 |
| Dielectric strength | 38KV/mm | 33KV/mm | GB 11297.11 |
| Room temperature bottom hose burstpressures | ＞5MPa | ＞2MPa | ISO 15875 |
| 95 ℃ of bottom hose burstpressuress | ＞2MPa | ＞0.15MPa | ISO 15875 |
As can be seen from the table, the elastomeric hose performance after cross-linking modified is greatly improved.The prepared flexible pipe of following examples all passes through identical performance test and does contrast, and with respect to unmodified elastomeric hose, the flexible pipe performance after the modification is all improved greatly, and concrete data are omitted.
Embodiment 2
Preparation DN is 10mm, and wall thickness is the cross-linking modified elastomeric hose of 2.0mm.
The cross-linking modified elastic composition of present embodiment adopts following weight part feedstock production:
Ethene-vinyl acetate copolymer Sumitate KA-31 (SUMITOMO CHEMICAL company, vinyl acetate content 28%)
100Kg，
Vinyltrimethoxy silane (Degussa company, trade mark VTMO) 1.0Kg,
Vinyltriethoxysilane (Degussa company, trade mark VTEO) 0.6Kg,
Tertbutyl peroxide (production of Shanghai Gaoqiao chemical plant) 0.8Kg,
Phenols (section comes benefactor department, the trade mark 168) 0.3Kg,
Dibutyl tin laurate (Dow Corning Corporation, trade mark D22) 0.2Kg,
Silicone lubricating grease (3M company, trade mark PPA) 0.1Kg.
Prepare flexible pipe with above-mentioned cross-linking modified elastic composition in accordance with the following methods:
A, resulting cross-linking modified elastic composition is mixed;
B, the cross-linking modified elastic composition among the step a is joined in single spiro rod reaction forcing machine (model SJ-80/30), under the temperature of 190 ℃ or 200 ℃, be squeezed into tubing, control tubing extruded velocity is 45m/min, negative pressure sizing moulding under the pressure of pressure-0.06MPa, use support roller to support flexible pipe in the vacuum apparatus, the spray water cooling, calibration sleeve internal diameter in the control forcing machine is 15.8mm, when pipe passes through calibration sleeve, form the air lubrication gap of 2mm between tube surfaces and the calibration sleeve;
C, the tubing of step b gained was handled 20 hours in 80 ℃ of hot water or 100 ℃ of hot water and steams, making the linear polymeric material transition is three-dimensional netted crosslinked macromolecular material.
Cross-linking modified elastomeric hose to method for preparing is tested, the result is as follows: degree of crosslinking 72% (detecting by the GB/T18474-2001 prescriptive procedure), Shao Shi hardness 67IRHD (detecting by the ISO7619-97 prescriptive procedure) under the normal temperature, breaking tenacity 14.5MPa (detecting by the GB/T1040-92 prescriptive procedure), tension set 1220% (detecting by the GB1040-92 prescriptive procedure), vertical relaxation shrinkage＜3% (detecting by B law regulation among the GB/T6691-2001), after flexible pipe weaves through stainless steel, by 90 ℃, 1.2MPa, 168h test and 1h, 3MPa, 95 ℃ of quiet interior tests of pressing are through physical and chemical testing, flexible pipe use temperature-40 ℃～110 ℃.
Embodiment 3
Preparation DN is 10mm, and wall thickness is the cross-linking modified elastomeric hose of 2.0mm.
The cross-linking modified elastic composition of present embodiment adopts following weight part feedstock production:
Ethene-vinyl acetate copolymer 7074M (Taiwan plastic cement, vinyl acetate content 26%) 100Kg,
Vinyltrimethoxy silane (Degussa company, trade mark VTMO) 1.0Kg,
Vinyltriethoxysilane (Degussa company, trade mark VTEO) 0.4Kg,
Peroxidation phenylformic acid (production of Shanghai Gaoqiao chemical plant) 0.7Kg,
Phenols (Ciba company, the trade mark 1010) 0.2Kg,
Phenols (Lay benefactor department, the trade mark 168) 0.2Kg,
Dibutyl tin laurate (Dow Corning Corporation, trade mark D-22) 0.16Kg,
Silicone lubricating grease (3M company, trade mark PPA) 0.3Kg.
Prepare flexible pipe with above-mentioned cross-linking modified elastic composition in accordance with the following methods:
A, resulting cross-linking modified elastic composition is mixed;
B, the cross-linking modified elastic composition among the step a is joined in single spiro rod reaction forcing machine (model SJ-80/30), under 210 ℃ temperature, be squeezed into tubing, extruded velocity is 45m/min, control pressure is-0.1MPa, use support roller to support flexible pipe in the vacuum apparatus, the spray water cooling, the calibration sleeve internal diameter of control forcing machine is 18.4mm;
C, the tubing of step b gained was handled 12 hours in 90 ℃ of water vapors, making the linear polymeric material transition is three-dimensional netted crosslinked macromolecular material.
Cross-linking modified elastomeric hose to method for preparing is tested, the result is as follows: degree of crosslinking 73% (detecting by the GB/T18474-2001 prescriptive procedure), Shao Shi hardness 70IRHD (detecting by the ISO7619-97 prescriptive procedure) under the normal temperature, breaking tenacity 15MPa (detecting by the GB/T1040-92 prescriptive procedure), tension set 950% (detecting by the GB1040-92 prescriptive procedure), vertical relaxation shrinkage＜3% (detecting by B law regulation among the GB/T6691-2001), after flexible pipe weaves through stainless steel, by 90 ℃, 1.2MPa, 168h test and 1h, 3MPa, 95 ℃ of quiet interior tests of pressing are through physical and chemical testing, flexible pipe use temperature-40 ℃～110 ℃.
Embodiment 4
Preparation DN is 8mm, and wall thickness is the cross-linking modified elastomeric hose of 1.8mm.
The cross-linking modified elastic composition of present embodiment adopts following weight part feedstock production:
Ethene-vinyl acetate copolymer 7074M (Taiwan plastic cement, vinyl acetate content 26%) 100Kg,
Vinyltrimethoxy silane (Degussa company, trade mark VTMO) 1.0Kg,
Tertbutyl peroxide 0.3Kg,
Phenols (Ciba company, the trade mark 264) 0.15Kg,
Dibutyl tin laurate (Dow Corning Corporation, trade mark D-22) 0.1Kg,
Silicone lubricating grease (3M company, trade mark PPA) 0.1Kg.
Prepare flexible pipe with above-mentioned cross-linking modified elastic composition in accordance with the following methods:
A, resulting cross-linking modified elastic composition is mixed;
B, the cross-linking modified elastic composition among the step a is joined in single spiro rod reaction forcing machine (model SJ-80/30), under 200 ℃ temperature, be squeezed into tubing, extruded velocity is 40m/min, control pressure is-0.15MPa, use support roller to support flexible pipe in the vacuum apparatus, the spray water cooling, the calibration sleeve internal diameter of control forcing machine is 15.8mm;
C, the tubing of step b gained was handled 8 hours in 100 ℃ of water vapors, making the linear polymeric material transition is three-dimensional netted crosslinked macromolecular material.
Cross-linking modified elastomeric hose to method for preparing is tested, the result is as follows: degree of crosslinking 75% (detecting by the GB/T18474-2001 prescriptive procedure), Shao Shi hardness 70IRHD (detecting by the ISO7619-97 prescriptive procedure) under the normal temperature, breaking tenacity 14.7MPa (detecting by the GB/T1040-92 prescriptive procedure), tension set 1110% (detecting by the GB1040-92 prescriptive procedure), vertical relaxation shrinkage＜3% (detecting by B law regulation among the GB/T6691-2001), after flexible pipe weaves through stainless steel, by 90 ℃, 1.2MPa, 168h test and 1h, 3MPa, 95 ℃ of quiet interior tests of pressing are through physical and chemical testing, flexible pipe use temperature-40 ℃～110 ℃.
Embodiment 5
Preparation DN is 8mm, and wall thickness is the cross-linking modified elastomeric hose of 1.8mm.
The cross-linking modified elastic composition of present embodiment adopts following weight part feedstock production:
Ethene-vinyl acetate copolymer 7074M (Taiwan plastic cement, vinyl acetate content 26%) 100Kg,
Vinyltrimethoxy silane (Degussa company, trade mark VTMO) 2.0Kg,
Benzoyl peroxide 0.1Kg,
Phenols (Ciba company, the trade mark 264) 0.1Kg,
Dibutyl tin laurate (Dow Corning Corporation, trade mark D-22) 0.1Kg,
Silicone lubricating grease (3M company, trade mark PPA) 0.5Kg.
Prepare flexible pipe with above-mentioned cross-linking modified elastic composition in accordance with the following methods:
A, resulting cross-linking modified elastic composition is mixed;
B, the cross-linking modified elastic composition among the step a is joined in single spiro rod reaction forcing machine (model SJ-80/30), under 210 ℃ temperature, be squeezed into tubing, extruded velocity is 45m/min, control pressure is-0.05MPa, use support roller to support flexible pipe in the vacuum apparatus, the spray water cooling, the calibration sleeve internal diameter of control forcing machine is 15.8mm;
C, the tubing of step b gained was handled 8 hours in 100 ℃ of water vapors, making the linear polymeric material transition is three-dimensional netted crosslinked macromolecular material.
Cross-linking modified elastomeric hose to method for preparing is tested, the result is as follows: degree of crosslinking 75% (detecting by the GB/T18474-2001 prescriptive procedure), Shao Shi hardness 71IRHD (detecting by the ISO7619-97 prescriptive procedure) under the normal temperature, breaking tenacity 15.5MPa (detecting by the GB/T1040-92 prescriptive procedure), tension set 990% (detecting by the GB1040-92 prescriptive procedure), vertical relaxation shrinkage＜3% (detecting by B law regulation among the GB/T6691-2001), after flexible pipe weaves through stainless steel, by 90 ℃, 1.2MPa, 168h test and 1h, 3MPa, 95 ℃ of quiet interior tests of pressing are through physical and chemical testing, flexible pipe use temperature-40 ℃～110 ℃.
More than be at the specifying of possible embodiments of the present invention, but this embodiment is not in order to limiting claim of the present invention, does not allly break away from the equivalence that skill spirit of the present invention does and implement or change, all should be contained in the claim of the present invention.
Claims (5)
1. the preparation method of an elastomeric hose is characterized in that, may further comprise the steps:
A, the raw material of cross-linking modified elastic composition is mixed, obtain cross-linking modified elastic composition;
B, under 190 ℃～210 ℃ temperature range, the cross-linking modified elastic composition among the step a is squeezed into tubing, extruded velocity is 5m/min～45m/min;
C, with the crosslinked hydrolysis 8～20 hours under 80～100 ℃ water or water vapor condition of the tubing of step b gained; Cross-linking modified elastic composition is made by the raw material of following weight part among the described step a:
100 parts of vinyl-vinyl acetate copolymers,
1～2 part of vinyl silanes,
0.1～0.8 part of organo-peroxide,
0.1～0.4 part of phenols,
0.1～0.2 part of dibutyl tin laurate,
0.1～0.5 part of silicone lubricating grease;
Described organo-peroxide is wherein one or more mixtures of tertbutyl peroxide, benzoyl peroxide, two tert-butyl peroxy isopropyl benzenes;
Described vinyl-vinyl acetate copolymer is 25%～30% multipolymer for the vinyl acetate weight percentage.
2. the preparation method of elastomeric hose according to claim 1, it is characterized in that, the extruded velocity of control tubing is 25m/min～45m/min among the described step b, the tube forming mode is the moulding of negative pressure sizing, control pressure is-0.05～-0.15MPa, the calibration sleeve internal diameter in the negative pressure sizing shaped device is than the big 4～6mm of external diameter of the described elastomeric hose of the moulding of wanting.
3. the preparation method of elastomeric hose according to claim 1 is characterized in that, elastic composition is made by the raw material of following weight part among the described step a:
100 parts of vinyl-vinyl acetate copolymers,
1.4～1.6 parts of vinyl silanes,
0.3～0.7 part of organo-peroxide,
0.15～0.3 part of phenols,
0.1～0.16 part of dibutyl tin laurate,
0.1～0.3 part of silicone lubricating grease.
4. according to the preparation method of claim 1 or 3 described elastomeric hose, it is characterized in that described vinyl silanes is wherein one or more mixtures of vinyltrimethoxy silane, vinyltriethoxysilane, vinyl methyl dimethoxysilane, vinyl methyldiethoxysilane.
5. according to the preparation method of claim 1 or 3 described elastomeric hose, it is characterized in that described vinyl-vinyl acetate copolymer is 28% multipolymer for the vinyl acetate weight percentage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103294840A CN102432944B (en) | 2011-10-26 | 2011-10-26 | Crosslinked modified elastomer composite, elastomer flexible pipe, and preparation method for flexible pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103294840A CN102432944B (en) | 2011-10-26 | 2011-10-26 | Crosslinked modified elastomer composite, elastomer flexible pipe, and preparation method for flexible pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102432944A CN102432944A (en) | 2012-05-02 |
| CN102432944B true CN102432944B (en) | 2013-08-21 |
Family
ID=45981305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103294840A Active CN102432944B (en) | 2011-10-26 | 2011-10-26 | Crosslinked modified elastomer composite, elastomer flexible pipe, and preparation method for flexible pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102432944B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2994241B1 (en) * | 2012-08-03 | 2015-03-06 | Technip France | UNDERWATER FLEXIBLE DRIVEN COMPRISING A LAYER COMPRISING AN INCREASED THERMAL RESISTANCE POLYETHYLENE |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1643048A (en) * | 2002-03-28 | 2005-07-20 | 卡姆普克有限公司 | Cross-linkable and/or cross-linked nanofiller compositions |
| CN101134828A (en) * | 2006-09-02 | 2008-03-05 | 朗盛德国有限责任公司 | Vulcanisable compound based on ethylene-vinyl acetate copolymers, their manufacture and use in the manufacture of articles with rubber elastomer characteristics |
-
2011
- 2011-10-26 CN CN2011103294840A patent/CN102432944B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1643048A (en) * | 2002-03-28 | 2005-07-20 | 卡姆普克有限公司 | Cross-linkable and/or cross-linked nanofiller compositions |
| CN101134828A (en) * | 2006-09-02 | 2008-03-05 | 朗盛德国有限责任公司 | Vulcanisable compound based on ethylene-vinyl acetate copolymers, their manufacture and use in the manufacture of articles with rubber elastomer characteristics |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102432944A (en) | 2012-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101698733B (en) | Hard polyethylene pipe with high impact resistance | |
| CN103524861B (en) | A kind of pressure polyethylene composition high temperature resistant, high | |
| CN101805472B (en) | Regeneration high-density polyethylene (HDPE) particle used for tubings and manufacture method thereof | |
| CN105400226A (en) | PE (polyethylene) wood-plastic composite material with high modulus | |
| CN109721912B (en) | Barrier layer, multilayer plastic composite pipe and preparation method | |
| CN104086993B (en) | A kind of graft crosslinking polyamide liner tubing preparation method and high-temperature resistant inner lining oil pick-up tube | |
| CN103044745B (en) | Anticorrosive, wax-proof and high-temperature-resistant polyethylene tube for oil extraction and preparation method of polyethylene tube | |
| CN103172937B (en) | A kind of Silane Grafted PPR pipe PP Pipe Compound and preparation method thereof | |
| CN102432944B (en) | Crosslinked modified elastomer composite, elastomer flexible pipe, and preparation method for flexible pipe | |
| CN104845403A (en) | High-strength anti-wear high polymer material and preparation method thereof | |
| CN104962027B (en) | A kind of elastomer alloy material and preparation method thereof | |
| CN106832698A (en) | A kind of chlorinated polyvinyl chloride tubes composition and tubing preparation method | |
| CN108003613B (en) | Alcohol-resistant nylon and preparation method thereof | |
| CN102432943B (en) | Elastomer composition, elastomer hose and preparation method for elastomer hose | |
| CN102618022B (en) | Double-resistance nylon tube and preparation method thereof | |
| CN100484992C (en) | Silane crosslinked polyethylene material and method for preparing the same | |
| CN103709974A (en) | Low-processing temperature adhesive resin as well as preparation method and application thereof | |
| CN108047573B (en) | Special material for PPR (polypropylene random) pipe and preparation method thereof | |
| CN106380658A (en) | PE corrugated pipe with strong pressure resistance and preparation method thereof | |
| CN102786763A (en) | Flexible pipe material for temperature resistant and thermoplastic elastomer and preparation method thereof | |
| CN104403208A (en) | Pressure-proof PPR tube stock and preparation method thereof | |
| CN106279875A (en) | A kind of novel polyethylene floor heating pipe and preparation method | |
| CN111171473B (en) | Large-diameter PVC-U water supply accessory injection molding granules and preparation method thereof | |
| CN204022720U (en) | A kind of high-temperature resistant inner lining oil pick-up tube | |
| CN113402753A (en) | Processing method of cold-resistant pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 528000 Guangdong province Foshan City Temple Road No. 16 HSBC Building 8 floor Patentee after: RIFENG ENTERPRISE GROUP CO., LTD. Address before: 528000 Guangdong province Foshan City Temple Road No. 16 HSBC Building 8 floor Patentee before: Rifeng Enterprise Co., Ltd., Foshan |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20171025 Address after: 528100 Guangdong Province, Foshan City Sanshui District of Leping Town, Feng Road No. 1 F1 - F14 Co-patentee after: RIFENG ENTERPRISE GROUP CO., LTD. Patentee after: RI Feng Enterprise (Foshan) Co., Ltd. Address before: 528000 Guangdong province Foshan City Temple Road No. 16 HSBC Building 8 floor Patentee before: RIFENG ENTERPRISE GROUP CO., LTD. |
|
| TR01 | Transfer of patent right |