CN113930024A - Preparation method of cryogenic black rubber and plastic heat-insulation product - Google Patents
Preparation method of cryogenic black rubber and plastic heat-insulation product Download PDFInfo
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- CN113930024A CN113930024A CN202111407308.4A CN202111407308A CN113930024A CN 113930024 A CN113930024 A CN 113930024A CN 202111407308 A CN202111407308 A CN 202111407308A CN 113930024 A CN113930024 A CN 113930024A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 61
- 239000004033 plastic Substances 0.000 title claims abstract description 31
- 229920003023 plastic Polymers 0.000 title claims abstract description 31
- 238000009413 insulation Methods 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- 238000004321 preservation Methods 0.000 claims abstract description 7
- 239000004088 foaming agent Substances 0.000 claims abstract description 6
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 5
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 5
- 239000002674 ointment Substances 0.000 claims abstract description 5
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 5
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 4
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 4
- 239000006229 carbon black Substances 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 238000007710 freezing Methods 0.000 claims abstract description 4
- 230000008014 freezing Effects 0.000 claims abstract description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004014 plasticizer Substances 0.000 claims abstract description 4
- 239000000779 smoke Substances 0.000 claims abstract description 4
- 239000008117 stearic acid Substances 0.000 claims abstract description 4
- 239000011787 zinc oxide Substances 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 239000012778 molding material Substances 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000003490 calendering Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 4
- 239000003063 flame retardant Substances 0.000 abstract description 4
- 230000006750 UV protection Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
Abstract
The invention discloses a preparation method of a cryogenic black rubber and plastic heat-insulation product, which comprises the following steps: 18-24 parts of ethylene propylene diene monomer; 4-8 parts of ethylene-vinyl acetate copolymer; 12-18 parts of a foaming agent; 60-75 parts of a smoke suppressor; 20-25 parts of a plasticizer; 5-8 parts of special carbon black; 1-2.5 parts of zinc oxide; 0.5-1.5 parts of stearic acid; 1-2 parts of an anti-aging agent; 2-10 parts of ointment; 10-15 parts of argil; 1-3 parts of freezing black ink, and the raw materials are checked by types and weights. The invention has better flame retardant effect, density of more than 65, better ozone resistance and ultraviolet resistance, good heat preservation effect and long service life, is used for cold and heat insulation at the temperature of-80 ℃, and ensures the gas forming amount of products by adopting special foaming agent and proportion; the multi-screw extrusion ensures the smoothness and the flatness of the surface of the product, and the density and the quality of the rubber material are greatly improved; oxidation resistance, ozone resistance, corrosion resistance and cracking embrittlement resistance.
Description
Technical Field
The invention relates to the field of rubber and plastic heat-insulating products, in particular to a preparation method of a deep-cooling black rubber and plastic heat-insulating product.
Background
The rubber and plastic heat-insulating material is increasingly widely applied, the use conditions of partial fields are very severe, and some defects of the rubber and plastic heat-insulating material, such as oxidation, integral structure cracking, embrittlement, heat preservation failure and appearance damage, are exposed in an extremely severe environment. The rubber and plastic as a foaming high molecular material is mainly subjected to heat preservation by the material and the internally locked gas, when the internal gas escapes or foams, the heat preservation effect is low due to unbalance of internal and external pressure, so that the difficult problem of meeting the heat preservation requirement under the extreme deep-cooling environment is solved, the oxidation-resistant, corrosion-resistant and crack-embrittlement-resistant deep-cooling rubber and plastic product is invented, and simultaneously, the black ozone resistance and the ultraviolet resistance are the best, so that the deep-cooling black rubber and plastic heat preservation product is natural.
The defects of the prior art are that the rubber and plastic has large deformation under severe environment, the whole structure is cracked, embrittled, heat-insulating and ineffective, a cryogenic product is made into black, the structure is unstable, the foaming cannot be stabilized, the strength is insufficient, the damage of external force to a foam body cannot be borne, and the air cannot be locked.
Disclosure of Invention
The invention aims to provide a preparation method of a cryogenic black rubber-plastic heat-insulation product, which aims to solve the problems of the formula and the process design and improve the toughness of the product so as to enhance the resistance and the support to external force; the design of a cellular structure realizes fine cells through material coordination and process adjustment so as to lock more gases; the extreme low temperature environment ensures that the product performance is not discounted and the service life is long.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a deep-cooling black rubber-plastic heat-insulation product comprises the following steps:
step one, preparing raw materials: 18-24 parts of ethylene propylene diene monomer; 4-8 parts of ethylene-vinyl acetate copolymer; 12-18 parts of a foaming agent; 60-75 parts of a smoke suppressor; 20-25 parts of a plasticizer; 5-8 parts of special carbon black; 1-2.5 parts of zinc oxide; 0.5-1.5 parts of stearic acid; 1-2 parts of an anti-aging agent; 2-10 parts of ointment; 10-15 parts of argil; 1-3 parts of freezing black ink;
checking the types and weights of the raw materials;
step two, sequentially placing the materials weighed by the raw materials in the step one into an internal mixing chamber for internal mixing to obtain a first rubber;
step three, pouring the rubber I obtained in the step two into an open mill, fully thinly passing the rubber I for twice cooling, then putting an automatic material placing frame for rubber overturning for 240 seconds, slicing, cooling, and then discharging to a tray for later use to obtain a rubber sheet I
Step four, after the types and the weight of the auxiliary raw materials are checked and confirmed, weighing the first rubber sheet, putting the first rubber sheet into the open mill again for secondary open milling, and sequentially adding the accelerators weighed according to the parts by weight after pressing and heating the coated roller: 4-6 parts of an accelerator; 2-5 parts of silicon dioxide; 1-3 parts of ethylene glycol; after the materials are uniformly stirred, the glue materials are put into an automatic turning-over breaker, a timer is started, and the glue strips are not cut off until the materials are completely fed, so that a first glue strip is obtained;
putting the first adhesive tape into an extruder by adopting a multi-screw extruder, sequentially adjusting the temperature on the extruder, uniformly feeding the adhesive tape into a feeding port, and extruding and molding by using a multi-layer grinding tool to obtain a molding material;
extruding a sizing material and then performing calendaring molding;
step seven, sending the molding material into a drying oven with a plurality of sections of drying tunnels through a material guiding rod to foam a rubber tube to obtain a rubber-plastic tube;
step eight, introducing the rubber plastic pipe into a water tank by using a feeding rod for cooling, performing circulating air cooling on the rubber plastic pipe by using an upper layer and a lower layer, wherein each layer is 15 meters and is 45 meters in total, and conveying the rubber plastic pipe to a cutting table by using a conveying belt;
and step nine, adjusting the speed of the cutting table to be consistent with that of the cooling conveyor belt, adjusting the meter counter, shearing according to the size requirement, packaging, and placing in a storage area.
Preferably, when the second step is used for the densification, the mixture is internally mixed to 147 to 150 ℃ and discharged.
Preferably, in step three, the thickness of the cut film is 7-8mm, the width of the cut film is 900-.
Preferably, in the fourth step, the material is automatically turned for 300 seconds, the thickness of the rubber strip is 7-8mm, and the width of the rubber strip is 150-200 mm.
Preferably, in step five, the temperature on the extruder is: the extruder head section is 30-35 ℃, the extrusion section is 30-35 ℃, the plasticizing section is 30-35 ℃, the screw section is 25-30 ℃, the extruder is started, and the rotating speed is adjusted to be 25-35 r/m.
Preferably, in the seventh step, the plurality of drying tunnels are six, and the temperature of each drying tunnel is as follows: one section is 120-125 ℃, the second section is 125-135 ℃, the third section is 145-135 ℃, the fourth section is 145-155 ℃, the fifth section is 155-165 ℃, and the sixth section is 165-175 ℃.
The invention has the technical effects and advantages that:
(1) the unique closed-cell structure and the polymer mixed formula have high water vapor permeability resistance;
(2) the ethylene propylene diene monomer improves the tensile strength and reduces the deformation degree of the product; the ointment, the argil and the glycol further improve the frost resistance and the stability of the product under the low-temperature condition, and greatly improve the heat-insulating property of the material;
(3) under the condition of low-temperature deep cooling, the heat insulation effect is good, and the oxygen index is as high as more than 32. The material is used for cold insulation and heat insulation at the temperature of-167 ℃, and has good heat insulation effect and long service life;
(4) oxidation resistance, ozone resistance, corrosion resistance and cracking embrittlement resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a preparation method of a deep-cooling black rubber-plastic heat-insulation product, which comprises the following steps of 1, preparing materials: 18-24 parts of ethylene propylene diene monomer; 4-8 parts of ethylene-vinyl acetate copolymer (EVA); 12-18 parts of a foaming agent; 60-75 parts of a smoke suppressor; 20-25 parts of a plasticizer; 5-8 parts of special carbon black; 1-2.5 parts of zinc oxide; 0.5-1.5 parts of stearic acid; 1-2 parts of an anti-aging agent; 2-10 parts of ointment; 10-15 parts of argil; 1-3 parts of freezing black ink;
checking the types and weights of the raw materials;
step 2, sequentially placing the weighed materials into an internal mixing chamber for internal mixing, and discharging when the internal mixing temperature is 147-150 ℃ to obtain first rubber;
step 3, pouring the first rubber into an open mill, fully thinning and passing through twice, cooling, then putting into an automatic material placing frame, turning over the rubber for 240 seconds, then slicing, wherein the thickness of the cut rubber is 7-8mm, the width of the rubber is 900-1000mm, the length of the rubber is 4000-5000mm, cooling, then discharging to a tray for later use, and thus obtaining the first rubber
Step 4, after the types and the weights of the auxiliary raw materials are checked and confirmed, weighing the first rubber sheet, putting the first rubber sheet into the open mill again for secondary open milling, and sequentially adding the accelerators in parts by weight after pressing and heating the covered rollers: 4-6 parts of an accelerator; 2-5 parts of silicon dioxide; 1-3 parts of ethylene glycol; after 0.3 to 1 part of the rest is uniformly stirred, feeding the rubber to the automatic turning-over, starting a timer, starting blanking after 300 seconds of automatic turning, wherein the thickness of the rubber strip is 7 to 8mm, the width of the rubber strip is 150mm to 200mm, and the rubber strip is not cut off until the blanking is finished to obtain a first rubber strip;
and 5, a multi-screw extruder (generally single-screw extrusion) is adopted, the meshing area of multiple screws is increased, the rolling and shearing area is multiplied, and the density and the quality of the rubber material are greatly improved through the multi-layer extrusion. Putting the first adhesive tape into an extruder, and sequentially adjusting the temperature on the extruder as follows: the extruder is started at the head section of 30-35 ℃, the extrusion section of 30-35 ℃, the plasticizing section of 30-35 ℃ and the screw section of 25-30 ℃, the rotating speed is adjusted to be 25-35 r/m, the rubber strips are uniformly fed into a feeding port (to prevent surface wrinkling) and enter a multi-layer grinding tool for extrusion molding, and a molding material is obtained;
step 6, extruding a sizing material and then performing calendaring molding;
step 7, sending the molding material into a drying oven with a plurality of sections of drying tunnels through a material guiding rod to foam out a rubber tube (plate); the multi-section drying tunnel is six sections, and the temperature of each section of drying tunnel is as follows: one section is 120-125 ℃, the second section is 125-135 ℃, the third section is 145-135 ℃, the fourth section is 145-155 ℃, the fifth section is 155-165 ℃, and the sixth section is 165-175 ℃ to obtain a rubber-plastic pipe;
step 8, introducing the rubber plastic pipe into a water tank by using a feeding rod for cooling (about 10 meters), performing circulating air cooling on an upper layer and a lower layer, wherein each layer is about 15 meters and about 45 meters in total, and conveying the rubber plastic pipe to a cutting table by using a conveying belt;
and 9, adjusting the speed of the cutting table to be consistent with that of the cooling conveyor belt, adjusting the meter counter, shearing according to the size requirement, packaging, and placing in a storage area.
The flame-retardant heat-insulating material has a better flame-retardant effect, the density can reach more than 65, the ozone resistance and ultraviolet resistance effects are better, the flame-retardant heat-insulating material is used for cold insulation and heat insulation at the temperature of-167 ℃, the heat insulation effect is good, the service life is long, and the gas forming amount of the product is ensured by adopting a special foaming agent and a proportion; the multi-screw extrusion ensures the smoothness and the flatness of the surface of the product, and the density and the quality of the rubber material are greatly improved; oxidation resistance, ozone resistance, corrosion resistance and cracking embrittlement resistance.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The standard parts used by the invention can be purchased from the market, and the special-shaped parts can be customized according to the description of the specification.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The preparation method of the cryogenic black rubber and plastic heat-insulation product is characterized by comprising the following steps of:
step one, preparing raw materials: 18-24 parts of ethylene propylene diene monomer; 4-8 parts of ethylene-vinyl acetate copolymer; 12-18 parts of a foaming agent; 60-75 parts of a smoke suppressor; 20-25 parts of a plasticizer; 5-8 parts of special carbon black; 1-2.5 parts of zinc oxide; 0.5-1.5 parts of stearic acid; 1-2 parts of an anti-aging agent; 2-10 parts of ointment; 10-15 parts of argil; 1-3 parts of freezing black ink;
checking the types and weights of the raw materials;
step two, sequentially placing the materials weighed by the raw materials in the step one into an internal mixing chamber for internal mixing to obtain a first rubber;
step three, pouring the rubber I obtained in the step two into an open mill, fully thinly passing the rubber I for twice cooling, then putting an automatic material placing frame for rubber overturning for 240 seconds, slicing, cooling, and then discharging to a tray for later use to obtain a rubber sheet I
Step four, after the types and the weight of the auxiliary raw materials are checked and confirmed, weighing the first rubber sheet, putting the first rubber sheet into the open mill again for secondary open milling, and sequentially adding the accelerators weighed according to the parts by weight after pressing and heating the coated roller: 4-6 parts of an accelerator; 2-5 parts of silicon dioxide; 1-3 parts of ethylene glycol; after the materials are uniformly stirred, the glue materials are put into an automatic turning-over breaker, a timer is started, and the glue strips are not cut off until the materials are completely fed, so that a first glue strip is obtained;
putting the first adhesive tape into an extruder by adopting a multi-screw extruder, sequentially adjusting the temperature on the extruder, uniformly feeding the adhesive tape into a feeding port, and extruding and molding by using a multi-layer grinding tool to obtain a molding material;
extruding a sizing material and then performing calendaring molding;
step seven, sending the molding material into a drying oven with a plurality of sections of drying tunnels through a material guiding rod to foam a rubber tube to obtain a rubber-plastic tube;
step eight, introducing the rubber plastic pipe into a water tank by using a feeding rod for cooling, performing circulating air cooling on the rubber plastic pipe by using an upper layer and a lower layer, wherein each layer is 15 meters and is 45 meters in total, and conveying the rubber plastic pipe to a cutting table by using a conveying belt;
and step nine, adjusting the speed of the cutting table to be consistent with that of the cooling conveyor belt, adjusting the meter counter, shearing according to the size requirement, packaging, and placing in a storage area.
2. The method for preparing a cryogenic black rubber and plastic heat preservation product according to claim 1, wherein banburying is performed to 147 ℃ -150 ℃ during the banburying in the second step.
3. The method for preparing a cryogenic black rubber-plastic heat-insulating product according to claim 1, wherein in the third step, the thickness of the cut film is 7-8mm, the width of the cut film is 900-1000mm, and the length of the cut film is 4000-5000 mm.
4. The method for preparing a cryogenic black rubber and plastic heat-insulating product according to claim 1, wherein in the fourth step, the material starts to be fed after 300 seconds of automatic material turning, the thickness of the rubber strip is 7-8mm, and the width of the rubber strip is 150mm-200 mm.
5. The method for preparing the cryogenic black rubber-plastic heat-insulating product according to claim 1, wherein in the fifth step, the temperature on the extruder is as follows: the extruder head section is 30-35 ℃, the extrusion section is 30-35 ℃, the plasticizing section is 30-35 ℃, the screw section is 25-30 ℃, the extruder is started, and the rotating speed is adjusted to be 25-35 r/m.
6. The method for preparing a cryogenic black rubber-plastic heat-insulating product according to claim 1, wherein in the seventh step, the plurality of drying tunnels are six, and the temperature of each drying tunnel is as follows: one section is 120-125 ℃, the second section is 125-135 ℃, the third section is 145-135 ℃, the fourth section is 145-155 ℃, the fifth section is 155-165 ℃, and the sixth section is 165-175 ℃.
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| CN114957865A (en) * | 2022-06-10 | 2022-08-30 | 华美节能科技集团有限公司 | Anti-ultraviolet rubber-plastic foaming thermal insulation material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112300479A (en) * | 2020-11-06 | 2021-02-02 | 赢胜节能集团有限公司 | Preparation of cryogenic rubber-plastic heat-insulating material |
| CN112961503A (en) * | 2021-03-05 | 2021-06-15 | 亚罗斯建材（江苏）有限公司 | Cold-insulation rubber-plastic foam plastic with low thermal conductivity coefficient for ship and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112300479A (en) * | 2020-11-06 | 2021-02-02 | 赢胜节能集团有限公司 | Preparation of cryogenic rubber-plastic heat-insulating material |
| CN112961503A (en) * | 2021-03-05 | 2021-06-15 | 亚罗斯建材（江苏）有限公司 | Cold-insulation rubber-plastic foam plastic with low thermal conductivity coefficient for ship and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114957865A (en) * | 2022-06-10 | 2022-08-30 | 华美节能科技集团有限公司 | Anti-ultraviolet rubber-plastic foaming thermal insulation material and preparation method thereof |
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Application publication date: 20220114 |