CN109591267A - A kind of three layers of compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method - Google Patents
A kind of three layers of compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method Download PDFInfo
- Publication number
- CN109591267A CN109591267A CN201811527091.9A CN201811527091A CN109591267A CN 109591267 A CN109591267 A CN 109591267A CN 201811527091 A CN201811527091 A CN 201811527091A CN 109591267 A CN109591267 A CN 109591267A
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- CN
- China
- Prior art keywords
- xps
- layer
- heat
- thermal insulation
- pipe
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
- B29K2023/0608—PE, i.e. polyethylene characterised by its density
- B29K2023/065—HDPE, i.e. high density polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
- B29K2025/04—Polymers of styrene
- B29K2025/06—PS, i.e. polystyrene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
Abstract
A kind of three layers of compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method, this method realizes tubing one step processing using three-layer co-extruded molding mode, wherein internal layer is PE-RTII heat-proof polythene tubing, and intermediate insulating layer is XPS extrusion molding foam pipe, and outer layer is hdpe pipe composition.The present invention takes full advantage of II type heat-proof polythene resin of PE-RT, XPS and high-density polyethylene resin, has the characteristics that excellent plasticity and extrusion flowability, it realizes in online one-step method production process, it ensure that the continuity of technique and production, production efficiency and product quality is greatly improved, due to using an online one-step extrusion molding, composite pipe solves the problems, such as that the foaming of conventional urethane tubing two-step process is eccentric, improves heating effect.The more traditional two-step process of the present invention is more efficient, cost is lower, and foaming layer uses polystyrene extrusion foaming (XPS), and more traditional polyurethane foam is more environmentally protective, easy to spread and universal.
Description
Technical field
The invention belongs to heat supply insulating plastic pipe pipe material field, in particular to a kind of three layers of compound XPS prefabricated thermal insulation are compound
Heat supply plastic pipe preparation method, it is specifically a kind of poly- using II type heat-proof polythene resin of PE-RT, XPS and high density
Vinyl has excellent plasticity and extrusion flowability, produces one kind of preparation in outdoor central heating field, for supplying
A kind of compound heat supply plastic pipe of prefabricated thermal insulation of hot fluid conveying.
Background technique
Currently, the production of China's heat supply plastic pipe is still produced using traditional two-step process, i.e., first produce
Internal layer and outer layer, recombinant carry out polyurethane foam, and production efficiency is low, at high cost, and this manual operation method will cause centre
The problem of foaming layer bias, influences the heat insulation effect in later period, heating effect is made to be deteriorated.And middle foaming layer uses poly- ammonia at present
Ester foaming technology, the material belong to toxic non-environmental protection material, carry out protection ring energetically in country due to using fluorine-containing foaming agent
In the environment of the policy of border, it is unfavorable for environmental protection.
In currently known compound heat supply tubing patent, without very good solution, its production efficiency is low, at high cost, environmentally friendly
The serious problem of hidden danger.
Summary of the invention
The purpose of the present invention is to overcome defect existing for existing heat supply plastic conduit, providing one kind being capable of online one-step method
It completes, high production efficiency, the compound heat supply plastic pipe preparation method of prefabricated thermal insulation at low cost and with environment protecting.
The technical solution of the present invention is as follows:
A kind of three layers of compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method, this method use three layers of online coextrusion mold side
Formula realizes tubing one step processing, and wherein internal layer is PE-RTII heat-proof polythene tubing, and intermediate insulating layer is XPS extrusion molding
Foam pipe, outer layer are hdpe pipe composition.Preparation method includes: to pass through II type heat-proof polythene of PE-RT
Core pipe extruder squeezes out sizing and does tubing inner tube, inner tube drawn, cooled down after by XPS foam extrusion machine in the resistance to hot polymerization of PE-RTII
The XPS insulating foam layer of uniform one layer of specific thickness of Extrusion Coating does middle layer in ethylene core pipe, is then squeezed by another outer layer
PE100 or PE80 polyvinyl resin is uniformly wrapped and does outer layer outside XPS insulating foam layer by machine out, the composite pipe warp in conjunction with after
It crosses and is prepared into tubing of the present invention after sizing, secondary cooling.
II type heat-proof polythene tubing of PE-RT used in above-mentioned internal layer is passed through using II type heat-proof polythene resin of PE-RT
Extrusion molding acquisition is crossed, minimum desired strength MRS is 10MPa.
XPS insulating layer used in the middle layer is a kind of extrusion type polystyrene heat-preservation layer of blown with carbon dioxide, tool
There is excellent heat insulation effect.
The outer layer is PE100 grades or PE80 polyethylene grades resin with high-density polyethylene resin material.
Remarkable result of the invention are as follows: the present invention takes full advantage of II type heat-proof polythene resin of PE-RT, XPS and highly dense
Degree polyvinyl resin has the characteristics that excellent plasticity and extrusion flowability, realizes and forms work in online One-step production
Skill ensure that the continuity of technique and production, production efficiency and product quality be greatly improved, due to being squeezed using an online step
It forms out, composite pipe solves the problems, such as that the foaming of conventional urethane tubing two-step process is eccentric, improves heating effect.Two
The polystyrene XPS material of carbonoxide foaming, has excellent heat insulation effect and extrudability, is to realize one step processing technique
Key, and abscess-size≤0.5 after molding (mm), any area summation for keeping the temperature bed boundary overhead hole and bubble accounts for whole
Percentage≤5 (%) of a sectional area, any direction size≤10 (mm) in single cavity, density >=60 (kg/m3), compression are strong
It spends (relative deformation 10%) >=0.3 (Mpa), water absorption rate≤10 (%).
Specific embodiment
A kind of three layers of compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method, II type heat-proof polythene of PE-RT is passed through
Core pipe extruder squeezes out sizing and does tubing inner tube, inner tube drawn, cooled down after by XPS foam extrusion machine in the resistance to hot polymerization of PE-RTII
The XPS insulating foam layer of uniform one layer of specific thickness of Extrusion Coating does middle layer in ethylene core pipe, is then squeezed by another outer layer
PE100 or PE80 polyvinyl resin is uniformly wrapped and does outer layer outside XPS insulating foam layer by machine out, the composite pipe warp in conjunction with after
Tubing is made after crossing sizing, secondary cooling.
A specific embodiment of the invention is not limited to the above embodiments provided mode.
Claims (5)
1. a kind of preparation method of the compound heat supply plastic pipe of three-layer co-extruded XPS prefabricated thermal insulation, which is characterized in that the tubing uses
Three-layer co-extruded molding mode realizes that wherein internal layer is PE-RTII heat-proof polythene tubing, and intermediate insulating layer is XPS extrusion molding
Foam pipe, outer layer are hdpe pipe composition；Preparation method are as follows: first produce in II type heat-proof polythene of PE-RT
XPS insulating layer is coated uniformly on interior by pipe then in II type heat-proof polythene inner tube of PE-RT by the way of extrusion molding
Guan Shang finally uniformly wraps one layer of high density polyethylene (HDPE) outer layer obtained through extrusion molding outside XPS insulating layer, then by true
The techniques such as empty sizing cooling, are allowed to be molded as one composite pipe.
2. according to a kind of preparation method of three-layer co-extruded compound heat supply plastic pipe of XPS prefabricated thermal insulation described in claim 1,
It is characterized in that, the internal layer is obtained using II type heat-proof polythene resin of PE-RT by extrusion molding, minimum desired strength
MRS is 10MPa.
3. three layers of compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method of one kind as described in claim 1, feature exist
In the intermediate insulating layer is a kind of extrusion type polystyrene heat-preservation of blown with carbon dioxide with excellent heat insulation effect
Layer.
4. according to three layers of one kind described in claim 1 compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method, feature
It is, the outer layer uses PE100 grade or PE80 rank high-density polyethylene resin material warp with higher anti-pressure ability to squeeze
Molding obtains out.
5. according to three layers of one kind described in claim 1 compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method, feature
It is, the tubing has abscess-size≤0.5 (mm), and the area summation of any heat preservation bed boundary overhead hole and bubble accounts for entirely
Percentage≤5 (%) of sectional area, any direction size≤10 (mm) in single cavity, density >=60 (kg/m3), compressive strength
(relative deformation 10%) >=0.3 (Mpa), water absorption rate≤10 (%).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811527091.9A CN109591267A (en) | 2018-12-13 | 2018-12-13 | A kind of three layers of compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811527091.9A CN109591267A (en) | 2018-12-13 | 2018-12-13 | A kind of three layers of compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109591267A true CN109591267A (en) | 2019-04-09 |
Family
ID=65961988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811527091.9A Pending CN109591267A (en) | 2018-12-13 | 2018-12-13 | A kind of three layers of compound XPS prefabricated thermal insulation heat supply plastic pipe preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109591267A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4322260A (en) * | 1979-04-04 | 1982-03-30 | Monsanto Company | Process for the continuous extrusion forming of a plastic double-walled foam-core conduit |
| CN102705591A (en) * | 2012-06-29 | 2012-10-03 | 宁夏青龙塑料管材有限公司 | Heat-resistant and pressure-resistant polyethylene composite pipe |
| CN102788198A (en) * | 2012-07-27 | 2012-11-21 | 佛山市日丰企业有限公司 | Multifunctional PP-R pipe and preparation method thereof |
| CN105860229A (en) * | 2016-06-15 | 2016-08-17 | 潘海云 | Core-layer foamed composite tubular product and preparation process thereof |
| CN108276692A (en) * | 2018-01-31 | 2018-07-13 | 淄博洁林塑料制管有限公司 | A kind of coextru-lamination tubing foamed polystyrene thermal insulation material and its manufacturing method |
| CN108317305A (en) * | 2018-01-31 | 2018-07-24 | 淄博洁林塑料制管有限公司 | A kind of polystyrene continuously multi-layer co-extruded foaming heat-insulating composite pipe material and its manufacturing method |
-
2018
- 2018-12-13 CN CN201811527091.9A patent/CN109591267A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4322260A (en) * | 1979-04-04 | 1982-03-30 | Monsanto Company | Process for the continuous extrusion forming of a plastic double-walled foam-core conduit |
| CN102705591A (en) * | 2012-06-29 | 2012-10-03 | 宁夏青龙塑料管材有限公司 | Heat-resistant and pressure-resistant polyethylene composite pipe |
| CN102788198A (en) * | 2012-07-27 | 2012-11-21 | 佛山市日丰企业有限公司 | Multifunctional PP-R pipe and preparation method thereof |
| CN105860229A (en) * | 2016-06-15 | 2016-08-17 | 潘海云 | Core-layer foamed composite tubular product and preparation process thereof |
| CN108276692A (en) * | 2018-01-31 | 2018-07-13 | 淄博洁林塑料制管有限公司 | A kind of coextru-lamination tubing foamed polystyrene thermal insulation material and its manufacturing method |
| CN108317305A (en) * | 2018-01-31 | 2018-07-24 | 淄博洁林塑料制管有限公司 | A kind of polystyrene continuously multi-layer co-extruded foaming heat-insulating composite pipe material and its manufacturing method |
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