CN103159908A - Polyurethane for coating and winding prefabricated directly buried insulating pipe - Google Patents
Polyurethane for coating and winding prefabricated directly buried insulating pipe Download PDFInfo
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- CN103159908A CN103159908A CN2013101152581A CN201310115258A CN103159908A CN 103159908 A CN103159908 A CN 103159908A CN 2013101152581 A CN2013101152581 A CN 2013101152581A CN 201310115258 A CN201310115258 A CN 201310115258A CN 103159908 A CN103159908 A CN 103159908A
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Abstract
A polyurethane for coating and winding a prefabricated directly buried insulating pipe is composed of two components A and B, wherein the ratio of A to B is (1:1) to (1:1.5), and wherein the component A comprises 130-160 parts of polyether polyol, 25-40 parts of polyester polyol, 1-4 parts of catalyst, 40-70 parts of foamer and 3-12 parts of surfactant by weight; and the component B is diphenylmethane diisocyanate (MDI). According to the invention, the coated polyurethane insulating layer meets the requirements of 4.3 in Q/12BJ 6066-2011; therefore, the gap of the formula of the polyurethane for coating and winding the prefabricated directly buried insulating pipe in China is supplied.
Description
Technical field
The present invention relates to a kind of urethane that is wound around prefabricated direct-buried thermal insulation pipe for spraying, belong to chemical field.
Background technology
Prefabricated direct-buried thermal insulation pipe is in China's production history of existing two more than ten years, and product is widely used in the fields such as cities and towns central heating and cities and towns central cooling, is the environmental protection and energy saving product of generally acknowledging.There is following problem in tradition " tube-in-tube " technique: 1) polyurethane heat-insulation layer thickness and high density polyethylene(HDPE) outer jacket thickness are all fixed, and need mold again if want to adjust, and cost is higher; 2) the overall charging capacity of urethane raw is higher and the urethane density distribution is inhomogeneous, causes the waste of raw material urethane; 3) the polyethylene coating thickness of pipe is thicker, causes the polyethylene wastage of material; 4) production technique is more complicated, consumes manually more.Therefore we have researched and developed domestic article one polyurethane coating polyethylene and have been wound around (being called for short spraying is wound around) pre-direct-buried thermal insulation pipe production line, because production technique is different from tradition " tube-in-tube " technique, need the new polyurethane formulations of research and development to satisfy the demand that spraying is wound around production technique.Summary of the invention
The objective of the invention is to research and develop a kind of urethane that is wound around prefabricated direct-buried thermal insulation pipe for spraying, make the spraying polyurethane thermal insulation layer satisfy in Q/12BJ 6066-2011 4.3 requirement, thereby filled up the blank that domestic spraying is wound around the prefabricated direct-buried thermal insulation pipe polyurethane formulations.
The object of the present invention is achieved like this, a kind of urethane that is wound around prefabricated direct-buried thermal insulation pipe for spraying, and it is characterized in that: be comprised of A, two kinds of components of B, its ratio A:B is 1:1 to 1:1.5; Wherein the A component comprises polyether glycol, polyester polyol, catalyzer, whipping agent and tensio-active agent, and wherein the weight proportion of various compositions is: polyether glycol 130-160 part, 25 ~ 40 parts of polyester polyols, 1 ~ 4 part of catalyzer, 40 ~ 70 parts of whipping agents, 3 ~ 12 parts, tensio-active agent; The B component is diphenylmethanediisocyanate MDI.
Above-mentioned polyether glycol comprises 60 parts of TSU-450L, 50 ~ 70 parts of DD-4110,20 ~ 30 parts of DD-403.
Above-mentioned polyester polyol is PS 3152.
Above-mentioned catalyzer is polycat 9 catalyst.
Above-mentioned tensio-active agent is AK 8806 organic silicon surfactants.
It is as follows that this invention effect is reached principle:
The white material that A, B component become respectively polyurethane material and black material, qualitative response be in hydroxyl and (B component) isocyanic ester in (A component) polyvalent alcohol-NCO group generation polyreaction in fact.Primitive reaction is as follows:
（m+1）R(NCO)
2+mOH~~~OH→OCN-R—（HNCOO~~OOC-NH-R—）
mHCO
AK8806 act as: make frothing foam stable, the size of control punch and structure.
Polycat 9 catalyst are catalyzer, control the speed of reaction.
Each Aethoxy Sklerol ratio is adjusted into adjusts its overall activity, makes reaction meet the spraying requirement.
Polyester polyol can provide more mechanical property.
Therefore, the present invention's formula is collaborative by the coupling of polyether glycol, polyester polyol, catalyzer, whipping agent and tensio-active agent, has following advantage and positively effect:
1, the polyurethane heat-insulation layer thickness can be adjusted arbitrarily by customer requirement, has avoided the high expense of mold.
2, spraying evenly, makes whole pipeline polyurethane insulation coating even density, reduces wastage of material.
3, make the technological process of production compact, consume manually lessly, reduced cost of labor.
In a word, the invention enables the spraying polyurethane thermal insulation layer to satisfy in Q/12BJ 6066-2011 4.3 requirement, thereby filled up the blank that domestic spraying is wound around the prefabricated direct-buried thermal insulation pipe polyurethane formulations.
Description of drawings
Fig. 1 is finished figure after formula spraying of the present invention.
Embodiment
Embodiment 1: a kind of urethane that is wound around prefabricated direct-buried thermal insulation pipe for spraying, the A component is comprised of 8,806 10 parts of polyether glycol, 3,152 40 parts of polyester polyol PS, 4 parts of catalyzer polycat 9 catalyst, 60 parts of blowing agent H CFC-141b and surfactant A K.Wherein: polyether glycol comprises 60 parts of TSU-450L, 70 parts of DD-4110,25 parts of DD-403.The B component is that diphenylmethanediisocyanate MDI is 350 parts.A, B component are sprayed into steel tube surface after the spraying muzzle evenly mixes.Sprayed product density is 66 kg/m
3, compressive strength is that 0.33 Mpa, water-intake rate are 6%, rate of closed hole is 90%.
Embodiment 2: a kind of urethane that is wound around prefabricated direct-buried thermal insulation pipe for spraying, the A component is comprised of 8,806 8 parts of polyether glycol, 3,152 25 parts of polyester polyol PS, 1 part of catalyzer polycat 9 catalyst, 40 parts of blowing agent H CFC-141b and surfactant A K.Wherein: polyether glycol comprises 60 parts of TSU-450L, 50 parts of DD-4110,20 parts of DD-403.The B component is that diphenylmethanediisocyanate MDI is 300 parts.A, B component are sprayed into steel tube surface after the spraying muzzle evenly mixes.Sprayed product density is 66 kg/m
3, compressive strength is that 0.33 Mpa, water-intake rate are 6%, rate of closed hole is 90%.
Claims (5)
1. one kind is used for the urethane that spraying is wound around prefabricated direct-buried thermal insulation pipe, and it is characterized in that: be comprised of A, two kinds of components of B, its ratio A:B is 1:1 to 1:1.5; Wherein the A component comprises polyether glycol, polyester polyol, catalyzer, whipping agent and tensio-active agent, and wherein the weight proportion of various compositions is: polyether glycol 130-160 part, 25 ~ 40 parts of polyester polyols, 1 ~ 4 part of catalyzer, 40 ~ 70 parts of whipping agents, 3 ~ 12 parts, tensio-active agent; The B component is diphenylmethanediisocyanate MDI.
2. according to claim 1 for spraying the urethane that is wound around prefabricated direct-buried thermal insulation pipe, it is characterized in that: above-mentioned polyether glycol comprises 60 parts of TSU-450L, 50 ~ 70 parts of DD-4110,20 ~ 30 parts of DD-403.
3. according to claim 1 for spraying the urethane that is wound around prefabricated direct-buried thermal insulation pipe, it is characterized in that: above-mentioned polyester polyol is PS 3152.
4. according to claim 1 for spraying the urethane that is wound around prefabricated direct-buried thermal insulation pipe, it is characterized in that: above-mentioned catalyzer is polycat 9 catalyst.
5. according to claim 1 for spraying the urethane that is wound around prefabricated direct-buried thermal insulation pipe, it is characterized in that: above-mentioned tensio-active agent is AK 8806 organic silicon surfactants.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310115258.1A CN103159908B (en) | 2013-04-03 | 2013-04-03 | Polyurethane for coating and winding prefabricated directly buried insulating pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310115258.1A CN103159908B (en) | 2013-04-03 | 2013-04-03 | Polyurethane for coating and winding prefabricated directly buried insulating pipe |
Publications (2)
| Publication Number | Publication Date |
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| CN103159908A true CN103159908A (en) | 2013-06-19 |
| CN103159908B CN103159908B (en) | 2015-02-18 |
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| CN201310115258.1A Active CN103159908B (en) | 2013-04-03 | 2013-04-03 | Polyurethane for coating and winding prefabricated directly buried insulating pipe |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371059A (en) * | 2015-12-08 | 2016-03-02 | 朗格斯特哈尔滨环保节能产品制造有限公司 | Hard polyurethane foam plastic spraying heat preservation pipe and spraying method |
| CN107602813A (en) * | 2017-07-26 | 2018-01-19 | 航天材料及工艺研究所 | A kind of spray mo(u)lding high density polyurethane foam and preparation method thereof |
| CN107868218A (en) * | 2017-12-15 | 2018-04-03 | 万华化学（宁波）容威聚氨酯有限公司 | A kind of pipe insulation polyurethane hard bubble composite material and preparation method thereof |
| CN109280364A (en) * | 2018-08-08 | 2019-01-29 | 日丰企业（佛山）有限公司 | The prefabricated direct-buried thermal insulation pipe road and complex heat-preservation composition of superelevation axial direction shear strength |
| CN112661932A (en) * | 2020-12-23 | 2021-04-16 | 上海玓墨化工科技有限公司 | Spraying type environment-friendly rigid polyurethane foam raw material composition for pipeline |
| CN114576470A (en) * | 2022-03-01 | 2022-06-03 | 昊天节能装备有限责任公司 | Low-temperature-resistant anti-cracking thermal insulation pipe sprayed and wound and manufacturing method thereof |
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| CN101735425A (en) * | 2009-12-07 | 2010-06-16 | 无锡双象化学工业有限公司 | Preparation method of rigid spraying polyurethane blended materials for refrigeration house |
| CN102391775A (en) * | 2011-09-14 | 2012-03-28 | 可利亚多元醇（南京）有限公司 | High-temperature-resistant composite material for polyurethane heat-preserving pipeline |
| CN102936326A (en) * | 2012-11-22 | 2013-02-20 | 山东东大一诺威新材料有限公司 | Polyurethane spray-coating composite material for storage tank thermal insulation and preparation method thereof |
| CN102977310A (en) * | 2012-09-29 | 2013-03-20 | 北京东方雨虹防水技术股份有限公司 | Flame-resistant spray coating polyurethane rigid foam material |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101735425A (en) * | 2009-12-07 | 2010-06-16 | 无锡双象化学工业有限公司 | Preparation method of rigid spraying polyurethane blended materials for refrigeration house |
| CN102391775A (en) * | 2011-09-14 | 2012-03-28 | 可利亚多元醇（南京）有限公司 | High-temperature-resistant composite material for polyurethane heat-preserving pipeline |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371059A (en) * | 2015-12-08 | 2016-03-02 | 朗格斯特哈尔滨环保节能产品制造有限公司 | Hard polyurethane foam plastic spraying heat preservation pipe and spraying method |
| CN107602813A (en) * | 2017-07-26 | 2018-01-19 | 航天材料及工艺研究所 | A kind of spray mo(u)lding high density polyurethane foam and preparation method thereof |
| CN107868218A (en) * | 2017-12-15 | 2018-04-03 | 万华化学（宁波）容威聚氨酯有限公司 | A kind of pipe insulation polyurethane hard bubble composite material and preparation method thereof |
| CN107868218B (en) * | 2017-12-15 | 2020-09-08 | 万华化学（宁波）容威聚氨酯有限公司 | Polyurethane rigid foam composite material for pipeline heat insulation and preparation method thereof |
| CN109280364A (en) * | 2018-08-08 | 2019-01-29 | 日丰企业（佛山）有限公司 | The prefabricated direct-buried thermal insulation pipe road and complex heat-preservation composition of superelevation axial direction shear strength |
| CN109280364B (en) * | 2018-08-08 | 2021-04-02 | 日丰企业（佛山）有限公司 | Prefabricated direct-buried heat insulation pipeline with ultrahigh axial shear strength and composite heat insulation composition |
| CN112661932A (en) * | 2020-12-23 | 2021-04-16 | 上海玓墨化工科技有限公司 | Spraying type environment-friendly rigid polyurethane foam raw material composition for pipeline |
| CN114576470A (en) * | 2022-03-01 | 2022-06-03 | 昊天节能装备有限责任公司 | Low-temperature-resistant anti-cracking thermal insulation pipe sprayed and wound and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103159908B (en) | 2015-02-18 |
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