CN101706023B - Preparation method of over-pressure over-temperature environment-friendly silica gel composite pipe - Google Patents
Preparation method of over-pressure over-temperature environment-friendly silica gel composite pipe Download PDFInfo
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- CN101706023B CN101706023B CN2009102504149A CN200910250414A CN101706023B CN 101706023 B CN101706023 B CN 101706023B CN 2009102504149 A CN2009102504149 A CN 2009102504149A CN 200910250414 A CN200910250414 A CN 200910250414A CN 101706023 B CN101706023 B CN 101706023B
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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
- B29C2948/92704—Temperature
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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
- B29C2948/92819—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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- 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
- B29C2948/92904—Die; Nozzle zone
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Abstract
The invention belongs to the technical field of silica gel pipes and preparation methods thereof, and discloses an over-pressure over-temperature environment-friendly silica gel composite pipe and a preparation method thereof. The over-pressure over-temperature environment-friendly silica gel composite pipe is mainly and technically characterized by comprising an inner rubber layer and an outer rubber layer which are made of silicon rubber, wherein a strengthening layer is arranged between the inner rubber layer and the outer rubber layer. The inner rubber layer 1 and the outer rubber layer 3comprise the following materials in parts by weight: 100 parts of silicon rubber SR, 40-55 parts of fume colloidal silica, 0.4-1 part of vulcanizing agent double-25DBPMH, 1-5 parts of ferric oxide, 0-5 parts of colorant, 5-8 parts of environment-friendly tasteless adhesive AS-88 and 5-8 parts of inorganic flame retardant aluminium hydroxide or zinc borate. The silicon rubber composite pipe is prepared by adopting the following steps of: freezing an inner rubber tyre to harden, winding the strengthening layer and vulcanizing, thus, the pressure resistance and the high temperature resistance of the common silicon rubber pipe are improved, the service life of the common silicon rubber pipe is prolonged, and the abrasion resistance is improved.
Description
Technical field
The invention belongs to silicone tube and preparation method thereof technical field, relate in particular to a kind of over-pressure over-temperature environment-friendly silica gel composite pipe and preparation method thereof.
Background technique
Silicone rubber has excellent performances such as heat resistance, winter hardiness, dielectricity, anti-ozone and anti-atmospheric aging, and the outstanding performance of silicone rubber is to use the temperature broadness, can use for a long time down in-60 ℃ (or lower temperature) to+250 ℃ (or higher temperature).But mechanical propertys such as the tensile breaking strength of silicone rubber and tearing toughness are relatively poor, and its physical and mechanical properties is not as good as most of synthetic rubber at normal temperatures, and except that nitrile silicon, fluorosioloxane rubber, general silicone rubber oil resistant, solvent resistance are not good enough, and application places is restricted.Existing silicone tube is owing to structural reason, and under hot environment, voltage endurance capability is poor, generally has only the 10-20 kg/cm, in use needs frequently to change pipeline, expends a large amount of man power and materials, and has reduced manufacturing efficiency.If want to improve the intensity of silicone tube, can adopt the form of enhancement layer as common rubber pipe, still and since silica gel underdone before, rubber is too soft, intensity is low, is difficult for braiding and twines enhancement layer, difficulty of processing is big, cost is high.
Summary of the invention
First technical problem that the present invention will solve just provide a kind of high temperature resistant, voltage endurance capability is strong, the over-pressure over-temperature environment-friendly silica gel composite pipe of corrosion-resistant, long service life.
For addressing the above problem, the technological scheme that over-pressure over-temperature environment-friendly silica gel composite pipe of the present invention adopts is: comprise inner glue layer and the outer glue-line made by silicone rubber, described inner glue layer and outside be provided with enhancement layer between the glue-line, described inner glue layer and outer glue-line include following materials in weight portion:
Silicone rubber SR 100, fume colloidal silica: 40-55,
Vulcanzing agent two-25 DBPMH:0.4-1, ferric oxide: 1-5,
Colorant: 0-5, environment-friendly tasteless adhesive A S-88:5-8,
Inorganic combustion inhibitor aluminium hydroxide or zinc borate: 5-8.
Its additional technical feature is:
4 row radiation holes are pricked in the circumferential evenly distributed position of glue-line outside described;
Described enhancement layer be two-layer more than, between adjacent enhancement layer, be provided with mesoglea.
Second technical problem that the present invention will solve just provides a kind of preparation method of above-mentioned over-pressure over-temperature environment-friendly silica gel composite pipe.
For addressing the above problem, the technological scheme that the preparation method of over-pressure over-temperature environment-friendly silica gel composite pipe of the present invention adopts is: this method comprises the following steps:
The first step prepares inner glue layer
1a, extrude original inner glue layer
Take by weighing various raw materials according to needed weight portion and carry out mixingly, choose soft core mold plug then, extrude original inner glue layer by the silicone rubber extruder, the fuselage head temperature is controlled at 20-40 ℃;
1b, freeze forming
Temperature in the refrigerating chamber of refrigeration equipment is controlled at below-35 ℃, and the pipe box that the original inner glue layer input that will extrude then is positioned at cooling chamber carried out freezing 12-18 minute, obtained the inner glue layer of moulding;
In second step, twine enhancement layer
The method that adopts braiding, twines in the inner glue layer outside of freeze forming, the parcel enhancement layer;
The 3rd step, oven dry
The inner glue layer that is tied with enhancement layer is inserted oven dry under the temperature 30-40 ℃ environment, and the time was controlled at 1-2 hour, and moisture is dried;
The 4th step extruded outer glue-line
Taking by weighing various raw materials according to needed weight portion and carry out mixingly, by having the silica gel special extruder of vacuum pumping device, is that the mold plug is extruded original outer glue-line with the inner glue layer that is tied with enhancement layer after the oven dry, and the fuselage head temperature is controlled at 20-40 ℃;
The 5th step, sulfuration
The body that will have outer glue-line, enhancement layer and inner glue layer vulcanizes;
The 6th step, the pipe laying joint
As required, withhold pipe coupling.
Its additional technical feature is:
It is characterized in that: described vulcanization adopts the microwave vulcanization continuous apparatus, and once sulfuration is finished;
Before extruding outer glue-line and vulcanizing, the outside winding water cloth of glue-line outside, water cloth carries out 1/2 overlap joint during winding, 160 ℃ * 10min of employing one step cure when sulfuration; 150 ℃ * 1h of post vulcanization → 200 ℃ * 4h;
After sulfuration was finished, 4 row radiation holes were pricked in the circumferential evenly distributed position of glue-line outside described.
Over-pressure over-temperature environment-friendly silica gel composite pipe provided by the present invention compared with prior art, have the following advantages: one, owing to comprise inner glue layer and the outer glue-line made by silicone rubber, described inner glue layer and outside be provided with enhancement layer between the glue-line, described inner glue layer and outer glue-line include following materials in weight portion:
Silicone rubber SR 100, fume colloidal silica: 40-55,
Vulcanzing agent is two-25DBPMH:0.4-1, ferric oxide: 1-5,
Colorant: 0-5, environment-friendly tasteless adhesive A S-88:5-8,
Inorganic combustion inhibitor aluminium hydroxide or zinc borate: 5-8;
Like this, in the time of-35 ℃, the intensity of inner glue layer increases greatly, can directly adopt the method for twining or weaving to weave or twine enhancement layer in the inner glue layer outside of solidifying, manufacturing efficiency improves greatly, increased the voltage endurance capability of ordinary silicon rubber pipe, heat-resisting ability, prolonged its working life, withstand voltage reaching more than 300 kg/cm is more than 10 times of pure silicon sebific duct voltage endurance capability, and improved decay resistance, the silicone rubber of this mixing one-tenth has tasteless nontoxic, flame-proof environmental protection is not afraid of high temperature and the characteristics of resisting severe cold, i.e. heat resistance, winter hardiness, when spending, still do not lose 300 degree Celsius and-90 original intensity and elasticity.And have performances such as excellent electric insulating, excellent dielectricity, oxytolerant ageing resistance, anti-ozone ageing resistance and mildew resistance, chemical stability;
They are two years old, because 4 capable radiation holes on the circumferential evenly distributed position of glue-line is pricked described outside, when the fluid of the High Temperature High Pressure of carrying in the pipeline, heat and pressure are delivered to enhancement layer rapidly, and dissipate rapidly by radiation hole, prevented that outer glue-line from heaving because of high temperature and high pressure causes; They are three years old, since described enhancement layer be two-layer more than, between adjacent enhancement layer, be provided with mesoglea, mesoglea is the glass cloth that posts two-sided silica gel, make between the adjacent enhancement layer bonding more firm, thereby improved the intensity of whole over-pressure over-temperature environment-friendly silica gel composite pipe.
Description of drawings
Fig. 1 is the structural representation of over-pressure over-temperature environment-friendly silica gel composite pipe of the present invention;
Fig. 2 is the sectional view of over-pressure over-temperature environment-friendly silica gel composite pipe of the present invention;
Fig. 3 is the sectional view that the over-pressure over-temperature environment-friendly silica gel composite pipe of two-layer enhancement layer is arranged.
Embodiment
Be described in further details below in conjunction with the structure and the use principle of accompanying drawing over-pressure over-temperature environment-friendly silica gel composite pipe of the present invention.
As depicted in figs. 1 and 2, over-pressure over-temperature environment-friendly silica gel composite pipe of the present invention comprises inner glue layer 1 and outer glue-line 3, and inner glue layer 1 and outer glue-line 3 adopt silicone rubber to make, inner glue layer 1 and outside be provided with enhancement layer 4 between the glue-line 3, inner glue layer 1 and outer glue-line 3 include following materials in weight portion:
Silicone rubber SR 100, fume colloidal silica: 40-55,
Vulcanzing agent is two-25DBPMH:0.4-1, ferric oxide: 1-5,
Colorant: 0-5, environment-friendly tasteless adhesive A S-88:5-8,
Inorganic combustion inhibitor aluminium hydroxide or zinc borate: 5-8.
Like this, below-35 ℃ the time, the intensity of inner glue layer increases greatly, can directly adopt the method for twining or weaving to weave or twine enhancement layer in the inner glue layer outside of solidifying, manufacturing efficiency improves greatly, voltage endurance capability, the heat-resisting ability of ordinary silicon rubber pipe have been increased, prolonged its working life, and improved decay resistance, the silicone rubber of this mixing one-tenth has tasteless nontoxic, flame-proof environmental protection is not afraid of high temperature and is resisted the characteristics of severe cold, promptly heat resistance, winter hardiness, when 300 degree Celsius and-90 are spent, still do not lose original intensity and elasticity.And have performances such as excellent electric insulating, excellent dielectricity, oxytolerant ageing resistance, anti-ozone ageing resistance and mildew resistance, chemical stability.
When the fluid of the High Temperature High Pressure of carrying in the pipeline, heat and pressure are delivered to enhancement layer 4 rapidly, in order to prevent that outer glue-line 3 from heaving because of high temperature and high pressure causes, last 4 capable radiation holes 7 are pricked in the circumferential evenly distributed position of glue-line 3 outside, and heat dissipates rapidly by radiation hole 7.Hole pitch can improve the life-span of outer glue-line 3 and whole over-pressure over-temperature environment-friendly silica gel composite pipe according to the Thickness Design of outer glue-line 3.
As shown in Figure 3, in order to have improved the intensity of whole over-pressure over-temperature environment-friendly silica gel composite pipe, enhancement layer 4 is two-layer, is provided with mesoglea 6 between adjacent enhancement layer 41,42, mesoglea 6 makes between the adjacent enhancement layer 41,42 bonding more firm for posting the glass cloth of two-sided silica gel.Certainly, enhancement layer 4 can be for more than two-layer.
The first step prepares inner glue layer
1a, extrude original inner glue layer
Take by weighing silicone rubber SR:100 kilogram, fume colloidal silica: 40 kilograms, two-25 DBPMH:0.4 kilograms of vulcanzing agent, ferric oxide: 1 kilogram, environment-friendly tasteless adhesive A S-88:5 kilogram, 5 kilograms in inorganic combustion inhibitor aluminium hydroxide carry out mixing, choose soft core mold plug then, extrude original inner glue layer by the silicone rubber extruder, the fuselage head temperature is controlled at 20 ℃;
1b, freeze forming
Temperature in the refrigerating chamber of refrigeration equipment is controlled at-35 ℃, and the pipe box that the original inner glue layer input that will extrude then is positioned at cooling chamber carried out freezing 18 minutes, obtained the inner glue layer of moulding;
In second step, twine enhancement layer
The method that adopts braiding, twines in the inner glue layer outside of freeze forming, the parcel enhancement layer;
The 3rd step, oven dry
The inner glue layer that is tied with enhancement layer is inserted oven dry under 30 ℃ of environment of temperature, and the time was controlled at 2 hours, and moisture is dried;
The 4th step extruded outer glue-line
Take by weighing silicone rubber SR:100 kilogram, fume colloidal silica: 40 kilograms, vulcanzing agent is two-the 25DBPMH:0.4 kilogram, ferric oxide: 1 kilogram, environment-friendly tasteless adhesive A S-88:5 kilogram, inorganic combustion inhibitor aluminium hydroxide carries out mixing for 5 kilograms, choose soft core mold plug then, by having the silica gel special extruder of vacuum pumping device, be that the mold plug is extruded original outer glue-line with the inner glue layer that is tied with enhancement layer after the oven dry, the fuselage head temperature is controlled at 20 ℃;
The 5th step, sulfuration
The body that will have outer glue-line, enhancement layer and inner glue layer adopts the microwave vulcanization continuous apparatus, and once sulfuration is finished;
The 6th step, the pipe laying joint
As required, withhold pipe coupling 5.
Embodiment 2
The first step prepares inner glue layer
1a, extrude original inner glue layer
Take by weighing silicone rubber SR:100 kilogram, fume colloidal silica: 55 kilograms, vulcanzing agent is two-the 25DBPMH:1 kilogram, ferric oxide: 5 kilograms, colorant: 5 kilograms, environment-friendly tasteless adhesive A S-88:8 kilogram, inorganic combustion inhibitor aluminium hydroxide carries out mixing for 8 kilograms, choose soft core mold plug then, extrude original inner glue layer by the silicone rubber extruder, the fuselage head temperature is controlled at 40 ℃;
1b, freeze forming
Temperature in the refrigerating chamber of refrigeration equipment is controlled at-45 ℃, and the pipe box that the original inner glue layer input that will extrude then is positioned at cooling chamber carried out freezing 12 minutes, obtained the inner glue layer of moulding;
In second step, twine enhancement layer
The method that adopts braiding, twines in the inner glue layer outside of freeze forming, the parcel enhancement layer;
The 3rd step, oven dry
The inner glue layer that is tied with enhancement layer is inserted oven dry under 40 ℃ of environment of temperature, and the time was controlled at 1 hour, and moisture is dried;
The 4th step extruded outer glue-line
Take by weighing silicone rubber SR:100 kilogram, fume colloidal silica: 55 kilograms, vulcanzing agent is two-the 25DBPMH:1 kilogram, and ferric oxide: 5 kilograms, colorant: 5 kilograms, environment-friendly tasteless adhesive A S-88:8 kilogram, it is mixing that 8 kilograms in inorganic combustion inhibitor aluminium hydroxide carries out, and chooses soft core mold plug then, by having the silica gel special extruder of vacuum pumping device, with the inner glue layer that is tied with enhancement layer after the oven dry is that the mold plug is extruded original outer glue-line, and the fuselage head temperature is controlled at 40 ℃;
The 5th step, sulfuration
The body that will have outer glue-line, enhancement layer and inner glue layer adopts the microwave vulcanization continuous apparatus, and once sulfuration is finished;
The 6th step, the pipe laying joint
As required, withhold pipe coupling.
The first step prepares inner glue layer
1a, extrude original inner glue layer
Take by weighing silicone rubber SR:100 kilogram, fume colloidal silica: 45 kilograms, vulcanzing agent is two-the 25DBPMH:0.6 kilogram, ferric oxide: 3 kilograms, colorant: 3 kilograms, environment-friendly tasteless adhesive A S-88:6 kilogram, the inorganic combustion inhibitor zinc borate carries out mixing for 6 kilograms, choose soft core mold plug then, extrude original inner glue layer by the silicone rubber extruder, the fuselage head temperature is controlled at 30 ℃;
1b, freeze forming
Temperature in the refrigerating chamber of refrigeration equipment is controlled at-40 ℃, and the pipe box that the original inner glue layer input that will extrude then is positioned at cooling chamber carried out freezing 16 minutes, obtained the inner glue layer of moulding;
In second step, twine enhancement layer
The method that adopts braiding, twines in the inner glue layer outside of freeze forming, the parcel enhancement layer;
The 3rd step, oven dry
The inner glue layer that is tied with enhancement layer is inserted oven dry under 30 ℃ of environment of temperature, and the time was controlled at 1.5 hours, and moisture is dried;
The 4th step extruded outer glue-line and winding water cloth
Take by weighing silicone rubber SR:100 kilogram, fume colloidal silica: 45 kilograms, vulcanzing agent is two-the 25DBPMH:0.6 kilogram, and ferric oxide: 3 kilograms, colorant: 3 kilograms, environment-friendly tasteless adhesive A S-88:6 kilogram, it is mixing that 6 kilograms of inorganic combustion inhibitor zinc borates carry out, and chooses soft core mold plug then, by having the silica gel special extruder of vacuum pumping device, with the inner glue layer that is tied with enhancement layer after the oven dry is that the mold plug is extruded original outer glue-line, and the fuselage head temperature is controlled at 30 ℃;
The outside winding water cloth of glue-line outside, water cloth carries out 1/2 overlap joint during winding, remain overlap joint evenly, water cloth machine even tension, set the wide cut of water cloth according to the diameter of body, it is the water cloth of 50mm that Φ 6-Φ 10 adopts wide cuts, and it is the water cloth of 70mm that Φ 12.5-Φ 25 adopts wide cuts, it is the water cloth of 90mm that Φ 31.5 adopts wide cut, and the employing wide cut of Φ more than 38 is the water cloth of 110mm.
In the 5th step, vulcanize and the water cloth of dismantling
The body that will have outer glue-line, enhancement layer and inner glue layer adopts 160 ℃ * 10min of one step cure; 150 ℃ * 1h of post vulcanization → 200 ℃ * 4h pulls down the water cloth that twines then.
The 6th step, the pipe laying joint
As required, withhold pipe coupling.
Embodiment 4
The first step prepares inner glue layer
1a, extrude original inner glue layer
Take by weighing silicone rubber SR:100 kilogram, fume colloidal silica: 50 kilograms, two-25 DBPMH:0.8 kilograms of vulcanzing agent, ferric oxide: 2 kilograms, colorant: 2 kilograms, environment-friendly tasteless adhesive A S-88:7 kilogram, the inorganic combustion inhibitor zinc borate carries out mixing for 7 kilograms, choose soft core mold plug then, extrude original inner glue layer by the silicone rubber extruder, the fuselage head temperature is controlled at 35 ℃;
1b, freeze forming
Temperature in the refrigerating chamber of refrigeration equipment is controlled at-42 ℃, and the pipe box that the original inner glue layer input that will extrude then is positioned at cooling chamber carried out freezing 15 minutes, obtained the inner glue layer of moulding;
In second step, twine enhancement layer
The method that adopts braiding, twines in the inner glue layer outside of freeze forming, the parcel enhancement layer;
The 3rd step, oven dry
The inner glue layer that is tied with enhancement layer is inserted oven dry under 35 ℃ of environment of temperature, and the time was controlled at 1.3 hours, and moisture is dried;
The 4th step extruded outer glue-line and winding water cloth
Take by weighing silicone rubber SR:100 kilogram, fume colloidal silica: 50 kilograms, two-25 DBPMH:0.8 kilograms of vulcanzing agent, ferric oxide: 2 kilograms, colorant: 2 kilograms, environment-friendly tasteless adhesive A S-88:7 kilogram, it is mixing that 7 kilograms of inorganic combustion inhibitor zinc borates carry out, and chooses soft core mold plug then, by having the silica gel special extruder of vacuum pumping device, with the inner glue layer that is tied with enhancement layer after the oven dry is that the mold plug is extruded original outer glue-line, and the fuselage head temperature is controlled at 30 ℃;
The outside winding water cloth of glue-line outside, water cloth carries out 1/2 overlap joint during winding, remain overlap joint evenly, water cloth machine even tension, set the wide cut of water cloth according to the diameter of body, it is the water cloth of 50mm that Φ 6-Φ 10 adopts wide cuts, and it is the water cloth of 70mm that Φ 12.5-Φ 25 adopts wide cuts, it is the water cloth of 90mm that Φ 31.5 adopts wide cut, and the employing wide cut of Φ more than 38 is the water cloth of 110mm.
In the 5th step, vulcanize and the water cloth of dismantling
The body that will have outer glue-line, enhancement layer and inner glue layer adopts 160 ℃ * 10min of one step cure; 150 ℃ * 1h of post vulcanization → 200 ℃ * 4h pulls down the water cloth that twines then.
In the 6th step, break up hot hole and pipe laying joint
4 row radiation holes are pricked in the circumferential evenly distributed position of glue-line outside described, then as required, withhold pipe coupling.
Claims (4)
1. the manufacture method of over-pressure over-temperature environment-friendly silica gel composite pipe, this over-pressure over-temperature environment-friendly silica gel composite pipe comprises inner glue layer and the outer glue-line of being made by silicone rubber, described inner glue layer and outside be provided with enhancement layer between the glue-line, described inner glue layer and outer glue-line include following materials in weight portion:
Silicone rubber SR:100, fume colloidal silica: 40-55,
Vulcanzing agent is two-25DBPMH:0.4-1, ferric oxide: 1-5,
Colorant: 0-5, environment-friendly tasteless adhesive A S-88:5-8,
Inorganic combustion inhibitor aluminium hydroxide or zinc borate: 5-8,
It is characterized in that: this method comprises the following steps:
The first step, the preparation inner glue layer
1a, extrude original inner glue layer
Take by weighing various raw materials according to needed weight portion and carry out mixingly, choose soft core mold plug then, extrude original inner glue layer by the silicone rubber extruder, the fuselage head temperature is controlled at 20-40 ℃;
1b, freeze forming
Temperature in the refrigerating chamber of refrigeration equipment is controlled at below-35 ℃, and the pipe box that the original inner glue layer input that will extrude then is positioned at refrigerating chamber carried out freezing 12-18 minute, obtained the inner glue layer of moulding; In second step, twine enhancement layer
In the method that the inner glue layer outside of freeze forming is adopted braiding, twined, lapping is the enhancement layer of steel wire or polyester line;
The 3rd step, oven dry
The inner glue layer that is tied with enhancement layer is inserted oven dry under the temperature 30-40 ℃ environment, and the time was controlled at 1-2 hour, moisture was dried get final product;
In the 4th step, extrude outer glue-line
Taking by weighing various raw materials according to needed weight portion and carry out mixingly, by having the silica gel special extruder of vacuum pumping device, is that the mold plug is extruded original outer glue-line with the inner glue layer that is tied with enhancement layer after the oven dry, and the fuselage head temperature is controlled at 20-40 ℃;
The 5th step, sulfuration
The body that will have outer glue-line, enhancement layer and inner glue layer vulcanizes;
The 6th step, the pipe laying joint
As required, withhold pipe coupling.
2. the manufacture method of over-pressure over-temperature environment-friendly silica gel composite pipe according to claim 1 is characterized in that: described vulcanization adopts the microwave vulcanization continuous apparatus, and once sulfuration is finished.
3. the manufacture method of over-pressure over-temperature environment-friendly silica gel composite pipe according to claim 1, it is characterized in that: before glue-line vulcanizes outside extruding, the outside winding water cloth of glue-line outside, water cloth carries out 1/2 overlap joint during winding, adopts 160 ℃ * 10min of one step cure when sulfuration; 150 ℃ * 1h of post vulcanization → 200 ℃ * 4h.
4. the manufacture method of over-pressure over-temperature environment-friendly silica gel composite pipe according to claim 1 is characterized in that: after sulfuration was finished, 4 row radiation holes were pricked in the circumferential evenly distributed position of glue-line outside described.
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| CN2009102504149A CN101706023B (en) | 2009-12-09 | 2009-12-09 | Preparation method of over-pressure over-temperature environment-friendly silica gel composite pipe |
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| CN2009102504149A CN101706023B (en) | 2009-12-09 | 2009-12-09 | Preparation method of over-pressure over-temperature environment-friendly silica gel composite pipe |
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| CN111810735B (en) * | 2020-07-27 | 2021-10-15 | 漯河市久隆液压科技有限公司 | Steel wire braided rubber hose with excellent pulse resistance for engineering machinery |
| CN112873785A (en) * | 2020-12-28 | 2021-06-01 | 苏州华仁科技有限公司 | HRS woven cloth-sandwiched silicone tube and mixing process thereof |
| CN112873775A (en) * | 2020-12-28 | 2021-06-01 | 苏州华仁科技有限公司 | HRS silicone tube surface smooth surface forming process |
| CN113339600A (en) * | 2021-06-04 | 2021-09-03 | 浙江省三门县永发橡胶厂 | Extrusion type special-shaped silicone tube |
| CN115384125B (en) * | 2022-09-22 | 2023-05-09 | 东劲集团股份有限公司 | Special rubber tube resistant to heat conduction oil high-pressure conveying and preparation method thereof |
-
2009
- 2009-12-09 CN CN2009102504149A patent/CN101706023B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
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| CN101706023A (en) | 2010-05-12 |
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