CN106641585B - A kind of house ornamentation PPR composite insulating pipes and preparation method thereof - Google Patents
A kind of house ornamentation PPR composite insulating pipes and preparation method thereof Download PDFInfo
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- CN106641585B CN106641585B CN201611183366.2A CN201611183366A CN106641585B CN 106641585 B CN106641585 B CN 106641585B CN 201611183366 A CN201611183366 A CN 201611183366A CN 106641585 B CN106641585 B CN 106641585B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/028—Composition or method of fixing a thermally insulating material
-
- B29D2009/00—
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Thermal Insulation (AREA)
Abstract
The present invention relates to a kind of house ornamentation PPR composite insulating pipes and preparation method thereof, the multiple tube is three-layer composite structure, polyethylene foamed insulating layer is coated with by equipment on the plastic-aluminum combined inner tube layers of PPR or PPR, weather-proof scratch-resistant outer jacket is coated by extruder in polyethylene foamed heat preservation middle layer, polyethylene foamed insulating layer uses closed cell foamed material, its abscess-size is 0.2-0.5mm, and weather-proof scratch resistant layer formula is：The silane-modified nano-titanium dioxide of 60-90%LLDPE, 5-15%HDPE, 4-20%EVOH, 0.5-2% and 0.5-2% composite assistants.It obtains polyethylene foamed insulating layer using One-step production.Production efficiency is improved using synchronous clad forming process with more excellent weather-proof scratch-resistant characteristic, production process while PPR composite insulating pipes of the present invention have heat preservation energy-saving, reduces manufacturing cost, the present invention has good market application prospect.
Description
Technical field
The invention belongs to plastic conduit heat preservation technology fields, and in particular to a kind of house ornamentation PPR composite insulating pipes and its system
Preparation Method.
Background technology
Modern house ornamentation increasingly pays close attention to the safety of pipeline hidden installing engineering, comfort and energy-saving effect.Than
Such as, the heat preservation energy-saving of daily hot water pipeline, winter pipeline frost crack preventing bursting by freezing；Southern summer high-temperature, high humidity environment pipeline are anti-" cold
It is solidifying ", all there is an urgent need to the development and application of heat-preserving composite pipeline.Under some furred ceilings and outdoor bright dress operating mode, it is desirable that pipeline is same
When also there is weatherability, scratch-resistant and rigidity.Traditional insulating rubber plastic and installation method, there is also some defects：1.
Scene suit construction is inconvenient, and fitting is caused not influence heat insulation effect closely；2. rubber-plastics material heat insulation effect easy to moisture absorption is poor, it is easy
Aging service life is short；3. surface does not have protective layer, it is easy to scratch when through walls.
The present invention develops novel house decoration PPR composite insulating pipes and its production technology thus, solves above-mentioned industry and asks
Topic, advantage are：1. functionally having excellent heat insulating ability, weather-proof and scratch-resistant；2. integrated forming technique prefabricated thermal insulation layer, subtracts
Live suit technique, installation effectiveness higher are lacked；3. the hot and cold water in pair pipeline plays better heat preservation, energy utilization is improved
Rate is conducive to push Green Architectural Development；4. protection inner tube exempts from the impact and damage of other contactants, the peace of entire pipeline is improved
Quan Xing.
Invention content
For the above-mentioned problems in the prior art, the purpose of the present invention is to provide a kind of house ornamentation PPR to keep the temperature again
Close pipe and preparation method thereof.
A kind of house ornamentation PPR composite insulating pipes are three-layer composite structure, it is characterised in that PPR or PPR plastic-aluminums are multiple
It closes and polyethylene foamed insulating layer is coated with by equipment on inner tube layer, coated by extruder in polyethylene foamed heat preservation middle layer
Weather-proof scratch-resistant outer jacket, polyethylene foamed insulating layer use closed cell foamed material, abscess-size 0.2-0.5mm, PPR or
The outer diameter of the plastic-aluminum combined inner tube layers of PPR is more than or equal to 16mm, and thickness is more than or equal to 2.3mm, the polyethylene foamed insulating layer
Thickness is more than or equal to 5mm, and the weather-proof scratch-resistant outer layer thickness is more than or equal to 0.2mm.
A kind of house ornamentation PPR composite insulating pipes, it is characterised in that polyethylene foamed insulation layer thickness is 5-15mm.
A kind of house ornamentation PPR composite thermal-insulating pipes, it is characterised in that weather-proof scratch-resistant outer layer be LLDP, HDPE,
EVOH and composite layer, thickness 0.2-0.8mm made of silane-modified nano-titanium dioxide.
The preparation method of house ornamentation PPR composite insulating pipes, it is characterised in that prefabricated thermal insulation is coated using one-step method
Production technology, including the plastic-aluminum combined inner tube layers of PPR or PPR squeeze out, cooling sizing, polyethylene foamed insulating layer cladding, weather-proof
The coating of scratch-resistant outer layer, traction cutting and collecting packing.
The preparation method of house ornamentation PPR composite insulating pipes, it is characterised in that include the following steps：
1）Inner tube is molded：PPR the or PPR aluminum plastic composite pipe of the plastic-aluminum combined inner tube layers of PPR or PPR is first squeezed in tubing equipment
Go out molding；
2）Insulating layer cuts clad welded section：It is wrapped after the polyethylene foamed pipe of polyethylene foamed insulating layer is cut in an axial direction
It is overlying on step 1）PPR the or PPR aluminum plastic composite pipe continuously squeezed out on, and the welding gun for passing through 120-500 DEG C of hot weld jointing temp will
Joint-cutting bonds, and is closely coated on outside PPR or PPR multiple tubes, forms polyethylene foamed and keeps the temperature middle layer；
3）Weathering layer squeezes out cladding sizing section
3.1）Weather-proof scratch-resistant outer layer is made of the component of following weight percentage：60-90%LLDPE,5-15%HDPE,
The silane-modified nano-titanium dioxide of 4-20%EVOH, 0.5-2% and 0.5-2% composite assistants；
3.2）By step 3.1）LLDPE, HDPE, EVOH, silane-modified nano-titanium dioxide and composite assistant by feeding intake
Amount is mixed evenly, and is 170-240 DEG C in extrusion temperature, melts and pass through in the extruder that extruded velocity is 2-15 ms/min
Extrusion die is coated on step 2）Polyethylene foamed heat preservation middle layer outside, form integrated weather-proof scratch-resistant outer layer, then pass through
Supercooling is shaped, and PPR composite insulating pipes are obtained；
4）Collecting packing section：By step 3）Composite insulating pipe after the completion of sizing must get home after coding, cutting, packaging
Dress PPR composite insulating pipes.
The preparation method of house ornamentation PPR composite insulating pipes, it is characterised in that step 3.2）In cooling and shaping adopt
With 5-25 DEG C of water.
The preparation method of house ornamentation PPR composite insulating pipes, it is characterised in that step 2）In hot weld jointing temp
Welding gun is 200-400 DEG C.
The preparation method of house ornamentation PPR composite insulating pipes, it is characterised in that 3.2）In extrusion die mouth mold in
It is lined with polyfluortetraethylene pipe, polytetrafluoroethylene (PTFE) length of tube is 5-15mm, and extrusion die internal surface temperature is controlled at 75-105 DEG C
In range.
By using above-mentioned technology, compared with prior art, beneficial effects of the present invention are as follows：
1）The PPR composite insulating pipes of the present invention are wrapped by three-layer composite structure outside PPR or PPR aluminum plastic composite pipe successively
Cover polyethylene foamed insulating layer and weather-proof scratch-resistant outer jacket so that traditional PPR pipe road product, with heat preservation, it is antifreeze, resistance to
The performances such as scraping so that traditional product realizes functionalization, solves not scratch resistance existing for the insulating tube of traditional PPR sets black rubber and plastic
The problems such as wiping, insulating layer are easily deformed, are easy to aging, improves the heat insulation effect of pipeline, extends the service life of pipeline, can make
For the novel heat preservation structure of the following house ornamentation；
2）The polyethylene foamed insulating layer of the present invention is binded up one's hair using closed-cell foam structure steeps polythene material, water vapor rejection
Performance is good, and heat insulation effect is preferable, and the cell diameter of expanded material is limited to 0.2-0.5mm, and abscess intensity is high so that outer
When layer extruder coating, foaming layer, which is unlikely to deform, caves in, and outer layer coating is uniform, and multiple tube outer diameter roundness is preferable；
3）The outer jacket of the present invention is that weather resistance anti-scraping material is effectively protected inner tube during construction and use, is prolonged
The service life in PPR pipe road has been grown, and can have been distinguished Domestic cold/hot water pipeline easily by the change of outer jacket color, be easy to
Later stage pipeline safeguards the PPR composite insulating pipes obtained by using above-mentioned technology, solves the heat preservation of traditional PPR sets black rubber and plastic
The problems such as scratch-resistant, insulating layer are not easily deformed, are easy to aging existing for pipe, improves the heat insulation effect of pipeline, extends pipeline
Service life, improve the safety of family's pipeline, can be used as the novel heat insulation product of the following house ornamentation；
4）The present invention is limited polytetrafluoroethylene (PTFE) length of tube by being lined with polyfluortetraethylene pipe in extrusion die mouth mold
For 5-15mm, heat insulating function is played, extrusion die internal surface temperature can be controlled within the scope of 75-105 DEG C, prevent weathering layer from squeezing
When going out to coat, die head scalds polyethylene foamed insulating layer.
Description of the drawings
Fig. 1 is the pipe structure schematic diagram of the present invention.
In figure：The plastic-aluminum combined inner tube layers of 1- PPR or PPR, 2- polyethylene foamed insulating layers, the weather-proof scratch-resistant outer layers of 3-.
Specific implementation mode
The invention will be further described with embodiment with reference to the accompanying drawings of the specification.
Below by embodiment, the technical solutions of the present invention will be further described.
As shown in Figure 1, a kind of house ornamentation PPR complex heat-preservation multiple tubes of the present invention, are three-layer composite structure, PPR or PPR
Polyethylene foamed insulating layer 2 is coated with by equipment on plastic-aluminum combined inner tube layer 1, is passed through in polyethylene foamed heat preservation middle layer 2
Extruder coats weather-proof scratch-resistant outer jacket 3, and polyethylene foamed insulating layer 2 is using closed cell foamed material, abscess-size
The outer diameter of the plastic-aluminum combined inner tube layer of 0.2-0.5mm, PPR or PPR 1 is more than or equal to 16mm, and thickness is more than or equal to 2.3mm, described
2 thickness of polyethylene foamed insulating layer is more than or equal to 5mm, preferably 5-15mm；Weather-proof 3 thickness of scratch-resistant outer layer be more than etc.
In 0.2mm；Weather-proof scratch-resistant outer layer 3 is LLDP, HDPE, EVOH and composite material made of silane-modified nano-titanium dioxide
Layer, thickness 0.2-0.8mm.
When PPR complex heat-preservations multiple tube provided by the invention is specifically processed, first, by extrusion mechanism for continuous PPR
Or the plastic-aluminum combined inner tube layers 1 of PPR, it is then continuously coated on the plastic-aluminum combined inner tube layers of PPR or PPR 1 in polyethylene foamed heat preservation
Interbed 2 waits for that it coats continuously to squeeze out in polyethylene foamed heat preservation middle layer 2 and coats weather-proof scratch-resistant outer layer 3.
The present invention house ornamentation with PPR complex heat-preservation multiple tubes use one-step method prefabricated thermal insulation production technology, including PPR or
The compound inner tube layers 1 of PPR are squeezed out, cooling sizing, polyethylene foamed heat preservation middle layer 2 cladding, the coating of weather-proof scratch-resistant outer layer 3, are led
Draw cutting and collecting packing.
Embodiment 1-4：A kind of house ornamentation production technology of PPR composite insulating pipes of the present invention, includes the following steps：
1）Inner tube is molded：The first extrusion molding in tubing equipment of internal layer PPR or PPR multiple tube；
2）Insulating layer cuts clad welded section：It is coated on step 1 after polyethylene foamed pipe is cut in an axial direction）It is continuous squeeze
On PPR the or PPR multiple tubes gone out, and joint-cutting is bonded by the welding gun of 120-500 DEG C of hot weld jointing temp, is closely coated on PPR
Or outside PPR multiple tubes, forms polyethylene foamed and keep the temperature middle layer 2；
3）Weathering layer squeezes out cladding sizing section
3.1）Weather-proof scratch-resistant outer layer 3 is made of the component of following weight percentage：60-90%LLDPE,5-15%
The silane-modified nano-titanium dioxide of HDPE, 4-20%EVOH, 0.5-2% and 0.5-2% composite assistants；
3.2）By step 3.1）LLDPE, HDPE, EVOH, silane-modified nano-titanium dioxide and composite assistant by feeding intake
Amount is mixed evenly, and is 170-240 DEG C in extrusion temperature, and the extruder melting that extruded velocity is 2-15 ms/min is by squeezing
Go out die head and is coated on step 2）Polyethylene foamed heat preservation middle layer 2 outside, form integrated weather-proof scratch-resistant outer layer 3, then pass through
Supercooling is shaped, and the extrusion die mouth mold is lined with polyfluortetraethylene pipe, and polytetrafluoroethylene (PTFE) length of tube is 5-15mm, will be squeezed out
Die head internal surface temperature controls within the scope of 75-105 DEG C；
4）Collecting packing section：By step 3）Composite insulating pipe after the completion of sizing is filled after coding, cutting, packaging
With PPR composite insulating pipes.
The outer layer formula of the weather-proof scratch-resistant of embodiment 1-4, process program and obtained house ornamentation PPR composite insulating pipes
Performance parameter table is respectively as shown in table 1, table 2 and table 3.
The formula of 1 weather-proof scratch-resistant outer layer of table
Auxiliary agent includes that weight proportion is 1：1 light stabilizer 770：Antioxidant 1010.
The technological parameter of 2 weather-proof scratch-resistant outer layer of table
The performance parameter table for the house ornamentation PPR composite insulating pipes that 3 1-4 of the embodiment of the present invention of table is obtained
Compared with 1. the insulating tube that the present invention obtains moulds the heat insulation effect of insulating tube with conventional school, as shown in table 4：
Experimental condition：Winter heat supply water is simulated, interior 60 degree of temperature, 10 degree of environment temperature are managed, inner tube PPR specifications are D20, are protected
Warm layer thickness 7mm：
The insulating tube that 4 present invention of table obtains moulds the heat insulation effect comparison result table of insulating tube with conventional school
2. the one-step method cladding process that the present invention uses and the advantage of traditional rubber and plastic technique compare, as shown in table 5：
The advantage contrast table of the one-step method cladding process that 5 present invention of table uses and traditional rubber and plastic technique
It can be obtained from table 4 and table 5：The tubing of integrated composite insulating pipe covers rubber-plastic thermal insulation pipe compared to traditional PPR, protects
Warm nature can be more superior, and more, the service life is longer for product for weatherability.
Above-described embodiment is used for illustrating the present invention, rather than limits the invention, the present invention spirit and
In scope of the claims, to any modifications and changes that the present invention makes, protection scope of the present invention is both fallen within.
Claims (6)
1. a kind of house ornamentation preparation method of PPR composite insulating pipes, house ornamentation is three-layer composite structure, PPR with PPR composite insulating pipes
Or the plastic-aluminum combined inner tube layers of PPR（1）It is upper that polyethylene foamed insulating layer is coated with by equipment（2）, polyethylene foamed insulating layer（2）
It is upper that weather-proof scratch-resistant outer jacket is coated by extruder（3）, polyethylene foamed insulating layer（2）Using closed cell foamed material, bubble
Pore size is the plastic-aluminum combined inner tube layer of 0.2-0.5mm, PPR or PPR（1）Outer diameter be more than or equal to 16mm, thickness is more than or equal to
2.3mm, the polyethylene foamed insulating layer（2）Thickness is more than or equal to 5mm, the weather-proof scratch-resistant outer layer（3）Thickness is big
In equal to 0.2mm, the production technology of prefabricated thermal insulation, including the plastic-aluminum combined inner tube layers of PPR or PPR are coated using one-step method（1）It squeezes
Go out, cool down sizing, polyethylene foamed insulating layer（2）Cladding, weather-proof scratch-resistant outer layer（3）Coating, traction cutting and collecting packing,
It is characterized by comprising following steps：
1）Inner tube is molded：The plastic-aluminum combined inner tube layers of PPR or PPR（1）PPR or PPR aluminum plastic composite pipe first squeezed in tubing equipment
Go out molding；
2）Insulating layer cuts clad welded section：By polyethylene foamed insulating layer（2）Polyethylene foamed pipe cut in an axial direction after wrap
It is overlying on step 1）PPR the or PPR aluminum plastic composite pipe continuously squeezed out on, and the welding gun for passing through 120-500 DEG C of hot weld jointing temp will
Joint-cutting bonds, and is closely coated on outside PPR or PPR multiple tubes, forms polyethylene foamed insulating layer（2）；
3）Weathering layer squeezes out cladding sizing section
3.1）Weather-proof scratch-resistant outer layer（3）It is made of the component of following weight percentage：60-90%LLDPE,5-15%HDPE,
The silane-modified nano-titanium dioxide of 4-20%EVOH, 0.5-2% and 0.5-2% composite assistants；
3.2）By step 3.1）LLDPE, HDPE, EVOH, silane-modified nano-titanium dioxide and composite assistant it is mixed by inventory
Conjunction stirs evenly, and is 170-240 DEG C in extrusion temperature, is melted in the extruder that extruded velocity is 2-15 ms/min and pass through extrusion
Die head is coated on step 2）Polyethylene foamed insulating layer（2）Outside, integrated weather-proof scratch-resistant outer layer is formed（3）, using
Cooling and shaping obtains PPR composite insulating pipes；
4）Collecting packing section：By step 3）Composite insulating pipe after the completion of sizing obtains house ornamentation use after coding, cutting, packaging
PPR composite insulating pipes.
2. the house ornamentation according to claim 1 preparation method of PPR composite insulating pipes, it is characterised in that step 3.2）In
Cooling and shaping uses 5-25 DEG C of water.
3. the house ornamentation according to claim 1 preparation method of PPR composite insulating pipes, it is characterised in that step 2）In heat
The welding gun of welding temperature is 200-400 DEG C.
4. the house ornamentation according to claim 1 preparation method of PPR composite insulating pipes, it is characterised in that 3.2）In extrusion
Die head mouth mold is lined with polyfluortetraethylene pipe, and polytetrafluoroethylene (PTFE) length of tube is 5-15mm, and extrusion die internal surface temperature is controlled
Within the scope of 75-105 DEG C.
5. the house ornamentation according to claim 1 preparation method of PPR composite insulating pipes, it is characterised in that polyethylene foamed is protected
Warm layer（2）Thickness is 5-15mm.
6. the house ornamentation according to claim 1 preparation method of PPR composite insulating pipes, it is characterised in that outside weather-proof scratch-resistant
Layer（3）Thickness is 0.2-0.8mm.
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| CN201611183366.2A CN106641585B (en) | 2016-12-20 | 2016-12-20 | A kind of house ornamentation PPR composite insulating pipes and preparation method thereof |
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| CN201611183366.2A CN106641585B (en) | 2016-12-20 | 2016-12-20 | A kind of house ornamentation PPR composite insulating pipes and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107061877B (en) * | 2017-06-12 | 2023-06-16 | 奥品科技有限公司 | Manufacturing method of prefabricated heat-insulating sun-proof plastic composite pipeline |
| CN107725911A (en) * | 2017-09-26 | 2018-02-23 | 浙江伟星新型建材股份有限公司 | A kind of antibacterial composite insulating pipe |
| CN109968685A (en) * | 2019-03-26 | 2019-07-05 | 浙江伟星新型建材股份有限公司 | A kind of composite insulating pipe preparation method |
| CN110500472B (en) * | 2019-09-02 | 2021-04-30 | 福建亚通新材料科技股份有限公司 | Home decoration composite pipe |
| CN114321518A (en) * | 2021-12-27 | 2022-04-12 | 武汉金牛经济发展有限公司 | Phase-change heat-preservation double-flow water composite pipe containing TPU layer |
| CN117124688B (en) * | 2023-10-24 | 2024-01-05 | 天津凯博特纸塑制品有限公司 | Preparation method and application of CPET sheet with multilayer structure |
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| CN102797914B (en) * | 2012-08-27 | 2015-02-25 | 佛山市日丰企业有限公司 | One-step heat preservation polypropylene random copolymer (PP-R) pipe and preparation method thereof |
| CN203784493U (en) * | 2013-12-27 | 2014-08-20 | 浙江伟星新型建材股份有限公司 | Flexible foaming insulating plastic composite tube |
| CN204477518U (en) * | 2014-12-26 | 2015-07-15 | 浙江伟星新型建材股份有限公司 | A kind of central air-conditioner prefabricated thermal insulation plastic composite pipe |
| CN105065792A (en) * | 2015-07-31 | 2015-11-18 | 大禹节水（天津）有限公司 | Cold-resistant high impact strength unplasticized polyvinyl chloride (PVC-U) composite pipe and preparation method thereof |
| CN105150487B (en) * | 2015-08-14 | 2017-11-17 | 浙江伟星新型建材股份有限公司 | A kind of fractional crystallization method of beta crystal PPR pipe extrusion |
| CN205244638U (en) * | 2015-12-10 | 2016-05-18 | 浙江伟星新型建材股份有限公司 | Heavy -calibre beta - compound pipe of PPR heat preservation |
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