CN103159908B - 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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- CN103159908B CN103159908B CN201310115258.1A CN201310115258A CN103159908B CN 103159908 B CN103159908 B CN 103159908B CN 201310115258 A CN201310115258 A CN 201310115258A CN 103159908 B CN103159908 B CN 103159908B
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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 for spraying the urethane being wound around prefabricated direct-buried thermal insulation pipe, belonging to chemical field.
Background technology
Prefabricated direct-buried thermal insulation pipe has the production history of two more than ten years in China, and product is widely used in the field such as cities and towns central heating and cities and towns central cooling, is generally acknowledged environmental protection and energy saving product.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 fixing, if think, adjustment needs mold again, and cost is higher; 2) the overall charging capacity of urethane raw is higher and urethane density distribution is uneven, causes raw material urethane to waste; 3) polyethylene coating thickness of pipe is thicker, causes polyethylene raw material to waste; 4) production technique is more complicated, consumes manually more.Therefore we have developed domestic Article 1 polyurethane coating polyethylene and are wound around (being called for short spraying to be wound around) pre-direct-buried thermal insulation pipe production line, because production technique is different from tradition " tube-in-tube " technique, need to research and develop new polyurethane formulations and meet the demand that spraying is wound around production technique.Summary of the invention
The object of the invention is to research and develop a kind of urethane for spraying winding prefabricated direct-buried thermal insulation pipe, make spraying polyurethane thermal insulation layer meet the requirement of in Q/12BJ 6066-2011 4.3, thus fill up the blank that domestic spraying is wound around prefabricated direct-buried thermal insulation pipe polyurethane formulations.
The object of the present invention is achieved like this, a kind of for spraying the urethane being wound around prefabricated direct-buried thermal insulation pipe, it is characterized in that: be made up of A, B two kinds of components, its ratio A:B is 1:1 to 1:1.5; Wherein component A comprises polyether glycol, polyester polyol, catalyzer, whipping agent and tensio-active agent, and wherein the weight proportion of various composition is: polyether glycol 130-160 part, polyester polyol 25 ~ 40 parts, catalyzer 1 ~ 4 part, whipping agent 40 ~ 70 parts, 3 ~ 12 parts, tensio-active agent; B component is diphenylmethanediisocyanate MDI.
Above-mentioned polyether glycol comprises TSU-450L 60 parts, DD-4110 50 ~ 70 parts, DD-40320 ~ 30 part.
Above-mentioned polyester polyol is PS 3152.
Above-mentioned catalyzer is polycat 9 catalyst.
Above-mentioned tensio-active agent is AK 8806 organic silicon surfactant.
It is as follows that this invention effect reaches principle:
A, B component become the white material of polyurethane material and black material respectively, in fact qualitative response be hydroxyl in (component A) polyvalent alcohol with in (B component) isocyanic ester-NCO group produces polyreaction.Primitive reaction is as follows:
（m+1）R(NCO)
2+mOH~~~OH→OCN-R—（HNCOO~~OOC-NH-R—）
mHCO
AK8806 act as: frothing foam is stablized, the size of control punch and structure.
Polycat 9 catalyst is catalyzer, controls the speed of reaction.
Each Aethoxy Sklerol ratio is adjusted to its overall activity of adjustment, makes reaction meet spraying requirement.
Polyester polyol can provide more mechanical property.
Therefore, formula of the present invention is worked in coordination with by the coupling of polyether glycol, polyester polyol, catalyzer, whipping agent and tensio-active agent, has following advantage and positively effect:
1, polyurethane heat-insulation layer thickness can adjust arbitrarily by customer requirement, avoids 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 less, reduce cost of labor.
In a word, the invention enables spraying polyurethane thermal insulation layer to meet the requirement of in Q/12BJ 6066-2011 4.3, thus fill up the blank that domestic spraying is wound around prefabricated direct-buried thermal insulation pipe polyurethane formulations.
Accompanying drawing explanation
Fig. 1 is finished figure after formula of the present invention spraying.
Embodiment
Embodiment 1: a kind of for spraying the urethane being wound around prefabricated direct-buried thermal insulation pipe, component A is made up of polyether glycol, polyester polyol PS 3,152 40 parts, catalyzer polycat 9 catalyst4 part, blowing agent H CFC-141b 60 parts and surfactant A K 8,806 10 parts.Wherein: polyether glycol comprises TSU-450L 60 parts, DD-4110 70 parts, DD-40325 part.B component is diphenylmethanediisocyanate MDI is 350 parts.A, B component, after spraying muzzle Homogeneous phase mixing, are sprayed into steel tube surface.Sprayed product density is 66 kg/m
3, compressive strength is 0.33 Mpa, water-intake rate is 6%, rate of closed hole is 90%.
Embodiment 2: a kind of for spraying the urethane being wound around prefabricated direct-buried thermal insulation pipe, component A is made up of polyether glycol, polyester polyol PS 3,152 25 parts, catalyzer polycat 9 catalyst1 part, blowing agent H CFC-141b 40 parts and surfactant A K 8,806 8 parts.Wherein: polyether glycol comprises TSU-450L 60 parts, DD-4110 50 parts, DD-403 20 parts.B component is diphenylmethanediisocyanate MDI is 300 parts.A, B component, after spraying muzzle Homogeneous phase mixing, are sprayed into steel tube surface.Sprayed product density is 66 kg/m
3, compressive strength is 0.33 Mpa, water-intake rate is 6%, rate of closed hole is 90%.
Claims (4)
1., for spraying the urethane being wound around prefabricated direct-buried thermal insulation pipe, it is characterized in that: be made up of A, B two kinds of components, its ratio A:B is 1:1 to 1:1.5; Wherein component A comprises polyether glycol, polyester polyol, catalyzer, whipping agent and tensio-active agent, and wherein the weight proportion of various composition is: polyether glycol 130-160 part, polyester polyol 25 ~ 40 parts, catalyzer 1 ~ 4 part, whipping agent 40 ~ 70 parts, 3 ~ 12 parts, tensio-active agent; B component is diphenylmethanediisocyanate MDI; Above-mentioned polyether glycol comprises TSU-450L60 part, DD-4110 50 ~ 70 parts, DD-403 20 ~ 30 parts.
2. according to claim 1 for spraying the urethane being wound around prefabricated direct-buried thermal insulation pipe, it is characterized in that: above-mentioned polyester polyol is PS 3152.
3. according to claim 1 for spraying the urethane being wound around prefabricated direct-buried thermal insulation pipe, it is characterized in that: above-mentioned catalyzer is polycat 9 catalyst.
4. according to claim 1 for spraying the urethane being wound around prefabricated direct-buried thermal insulation pipe, it is characterized in that: above-mentioned tensio-active agent is AK 8806 organic silicon surfactant.
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 |
|---|---|
| CN103159908A CN103159908A (en) | 2013-06-19 |
| CN103159908B true CN103159908B (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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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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| CN (1) | CN103159908B (en) |
Families Citing this family (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 |
| CN107602813B (en) * | 2017-07-26 | 2020-10-23 | 航天材料及工艺研究所 | Spray-molded high-density polyurethane foam 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 |
| 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 |
| CN112661932B (en) * | 2020-12-23 | 2022-06-14 | 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 |
-
2013
- 2013-04-03 CN CN201310115258.1A patent/CN103159908B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
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| CN103159908A (en) | 2013-06-19 |
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