CN105601870A - Polyurethane and preparation process thereof - Google Patents
Polyurethane and preparation process thereof Download PDFInfo
- Publication number
- CN105601870A CN105601870A CN201610098054.5A CN201610098054A CN105601870A CN 105601870 A CN105601870 A CN 105601870A CN 201610098054 A CN201610098054 A CN 201610098054A CN 105601870 A CN105601870 A CN 105601870A
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- polyethers
- polyurethane
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to the technical filed of foam production, in particular to polyurethane and a preparation process thereof. In the preparation process, the water of combined polyether reacts with isocyanate to produce carbon dioxide, the carbon dioxide is not an ozone-depleting substance (ODS), and a catalyst promotes the isocyanate and polyether to form a polymer, so that the pore forming performance of the polyurethane is formed, the polyurethane does not produce a bulge phenomenon after being subjected to high temperature, and high temperature resistant performance is formed. The polyurethane has the enough pore-forming performance, the density of the polyurethane can be lower, and accordingly the dimensional stability of the polyurethane is improved. The polyurethane is resistant to high temperature and has good dimensional stability. When the preparation process does not adopt CFCs and HCFCs foaming agents, no ODS or ODP is used for the raw materials and is not used in the production process, an ozone layer in the atmosphere is not damaged, the environment is effectively protected, and the polyurethane meets the limiting value requirements of revised directive 2011/65/EU appendix II of EU RoHS directives 2008/95/E, does not contain cadmium, lead, mercury, hexavalent chromium, polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (PBDEs) and other harmful substances and is an environmentally-friendly product.
Description
Technical field
The present invention relates to foam production technical field, particularly a kind of polyurethane and preparation technology thereof。
Background technology
Polyurethane is the abbreviation of polyurethanes, every on high polymer main chain, contain many repetitions-macromolecular compound of NHCOO-group is commonly referred to as polyurethanes.
Polyurethane foam plastics range of application is very extensive, almost be penetrated into each department of national economy, use very generally in departments such as furniture, bed accessory, transport, refrigeration, building, thermal insulation especially, become one of indispensable material, become one of kind that in plastics, range of application is the widest.
Rigid polyurethane foam refers to can there is not obvious distortion under certain load effect, can not return to the foamed plastics of original form in the time that load is excessive after deforming; Rigid polyurethane foam, has the remarkable advantages such as quality is light, intensity is large, heat-insulating sound-insulating is effective, convenient formation, can be used as door-plate inner stuffing, is applied to an industry and produces; Hard polyurethane foams raw material has good mobile performance and the adhesive property good with panel, panel and the polyurethane foam of door are combined closely, form high-intensity compound door plant, the door-plate of producing like this has surfacing, intensity is large, and the thermal conductivity factor of hard polyurethane foams is low, insulation effect excellence, and can carry out on-the-spot injection moulding door-plate. Therefore, hard polyurethane foams is a kind of ideal door-plate core, and it has the following advantages compared with doing door-plate core with refill:
1, compared with doing inserts with common refill, heat preservation and insulation excellence.
2, with general packing material, soundproof effect is very outstanding.
3, the compressive strength of foam is large, the door-plate being produced into, and lightweight, combined strength bination is large, plate face is smooth, can stand higher mechanical load.
4, filler water absorption rate is very low, good stability of the dimension, and long-term use can not be out of shape.
5, the ageing-resistant life-span of foam long, reach service time more than 30 years.
6, nontoxic, the non-corrosiveness of foam.
7, moulding is easy, and production efficiency is high, is easy to large-scale production.
Although hard polyurethane foams has above multiple advantage, its resistance to elevated temperatures is poor, all can produce above obvious bulging phenomenon at 120-140 DEG C, once hard polyurethane foams deform, irreversible; Producing polyurethane foam door (with polyurethane foam as door-plate inner stuffing) traditional handicraft is all the technique that after the moulding of employing door-plate, first plastic-blasting foams again, avoid because the high temperature of plastic-blasting operation causes the door body deformability after foaming, the surface that unavoidable end of door plate was extruded/spilt to foam in foaming process pollutes, have a strong impact on the presentation quality of finished product door-plate, because the adhesive property of foam and door-plate is good, this brings a difficult problem on the contrary later stage cleaning work。
Summary of the invention
In order to overcome deficiency described above, the object of this invention is to provide a kind of high temperature resistant and a kind of polyurethane that dimensionally stable is good, a kind of preparation technology of polyurethane is also provided.
The technical scheme that the present invention solves its technical problem is:
A kind of polyurethane, comprises isocyanates, wherein, also comprises combined polyether, and described combined polyether comprises component 1 and component 2; Described component 1 comprises sucrose polyethers, glucitols polyethers and trihydroxylic alcohol polyethers; Described component 2 comprises water.
As a modification of the present invention, described component 2 also comprises catalyst.
As a further improvement on the present invention, described component 2 also comprises silicone oil.
Further improve as of the present invention, described catalyst comprises carboxylate, solid amine, triethanolamine and dimethyl cyclohexyl amine.
Further improve as of the present invention, the ratio of described isocyanates and described combined polyether is 1.7:1.
Further improve described component 1 as of the present invention: taking total amount 100 weight portions as the required formula of ratio is as 50 ~ 70 parts of sucrose polyethers, 10 ~ 25 parts of glucitols polyethers, 10 ~ 30 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, described component 2 is 1 ~ 1.5 part of carboxylate, 0.1 ~ 0.3 part of solid amine, 0.5 ~ 1.2 part of triethanolamine, 0.6 ~ 1.2 part of dimethyl cyclohexyl amine, 2 ~ 2.5 parts of silicone oil, 3 ~ 8.5 parts, water.
Further improve described component 1 as of the present invention: taking total amount 100 weight portions as the required formula of ratio is as 50 parts of sucrose polyethers, 20 parts of glucitols polyethers, 19 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, described component 2 is 1 part of carboxylate, 0.2 part of solid amine, 1 part of triethanolamine, 0.8 part of dimethyl cyclohexyl amine, 2 parts of silicone oil, 6 parts, water.
Further improve described component 1 as of the present invention: taking total amount 100 weight portions as the required formula of ratio is as 68 parts of sucrose polyethers, 10 parts of glucitols polyethers, 10 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, described component 2 is 1 part of carboxylate, 0.1 part of solid amine, 1.2 parts of triethanolamines, 1.2 parts of dimethyl cyclohexyl amines, 2.5 parts of silicone oil, 6 parts, water.
Further improve described component 1 as of the present invention: taking total amount 100 weight portions as the required formula of ratio is as 60 parts of sucrose polyethers, 15 parts of glucitols polyethers, 13 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, described component 2 is 1.5 parts of carboxylates, 0.3 part of solid amine, 0.8 part of triethanolamine, 0.9 part of dimethyl cyclohexyl amine, 2.5 parts of silicone oil, 6 parts, water.
A preparation technology for polyurethane, comprises the steps:
Step S1: add sucrose polyethers, glucitols polyethers and trihydroxylic alcohol polyethers;
Step S2: add water;
Step S3: add silicone oil;
Step S4: add carboxylate, solid amine, triethanolamine and dimethyl cyclohexyl amine;
Step S5: add isocyanates, react with water under the catalytic action of catalyst.
In the present invention, water in combined polyether and isocyanates are under the effect of catalyst, reaction produces carbon dioxide, carbon dioxide is not ozone consuming substances (ODS), the 0DP(ozone-depleting value of diving) be zero, can not destroy atmospheric ozone layer, VOC free, catalyst impels isocyanates and polyethers to form aggressiveness, thereby forms opening of the present invention, makes the present invention that bulging phenomenon can not occur after high temperature, thereby formation resistance to elevated temperatures, opening of the present invention is enough, makes it density lower, thereby strengthens its dimensional stability; The present invention is high temperature resistant and good stability of the dimension; The present invention does not use CFCs and HCFCs class blowing agent; in raw material and production process, do not use and produce ODS; ODP is zero; can not damage the ozone layer in atmosphere; protection of the environment effectively; the present invention meets the limit value requirement that reformulates instruction 2011/65/EU annex II of RoHS Directive 2008/95/EC,, containing harmful substances such as cadmium, lead, mercury, Cr VI, PBBs (PBBs), PBDEs (PBDEs), is not environmentally friendly machine.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, with the following Examples, the present invention is further elaborated. Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
A kind of polyurethane of the present invention, comprises isocyanates and combined polyether.
In the present invention, combined polyether comprises component 1 and component 2.
Wherein, component 1 comprises sucrose polyethers, glucitols polyethers and trihydroxylic alcohol polyethers.
In addition, component 2 comprises water.
In the present invention, the water in combined polyether and isocyanate reaction produce carbon dioxide, and carbon dioxide is not ozone consuming substances (ODS), the 0DP(ozone-depleting value of diving) be zero, can not destroy atmospheric ozone layer, VOC free, catalyst impels isocyanates and polyethers to form aggressiveness, thereby form opening of the present invention, make the present invention that bulging phenomenon can not occur after high temperature, thereby form resistance to elevated temperatures, opening of the present invention is enough, make it density lower, thereby strengthen its dimensional stability; The present invention does not use CFCs and HCFCs class blowing agent; in raw material and production process, do not use and produce ODS; ODP is zero; can not damage the ozone layer in atmosphere; protection of the environment effectively; the present invention meets the limit value requirement that reformulates instruction 2011/65/EU annex II of RoHS Directive 2008/95/EC,, containing harmful substances such as cadmium, lead, mercury, Cr VI, PBBs (PBBs), PBDEs (PBDEs), is not environmentally friendly machine.
In the present invention, component 2 also comprises catalyst, is beneficial to catalytic.
And component 2 also comprises silicone oil, make the water of combined polyether and isocyanate reaction faster, and increase its surperficial bright cleanliness.
The invention provides a kind of embodiment of catalyst, catalyst comprises carboxylate, solid amine, triethanolamine and dimethyl cyclohexyl amine.
In the present invention, the ratio of isocyanates and combined polyether is 1.7:1, and isocyanate content is high.
In the technical recipe of the combined polyether in the present invention, component 1: taking total amount 100 weight portions as the required formula of ratio is as 50 ~ 70 parts of sucrose polyethers, 10 ~ 25 parts of glucitols polyethers, 10 ~ 30 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, component 2 is 1 ~ 1.5 part of carboxylate, 0.1 ~ 0.3 part of solid amine, 0.5 ~ 1.2 part of triethanolamine, 0.6 ~ 1.2 part of dimethyl cyclohexyl amine, 2 ~ 2.5 parts of silicone oil, 3 ~ 8.5 parts, water.
The invention provides a kind of proportioning embodiment of combined polyether, component 1: taking total amount 100 weight portions as the required formula of ratio is as 50 parts of sucrose polyethers, 20 parts of glucitols polyethers, 19 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, component 2 is 1 part of carboxylate, 0.2 part of solid amine, 1 part of triethanolamine, 0.8 part of dimethyl cyclohexyl amine, 2 parts of silicone oil, 6 parts, water.
The invention provides the another kind of proportioning embodiment of combined polyether, component 1: taking total amount 100 weight portions as the required formula of ratio is as 68 parts of sucrose polyethers, 10 parts of glucitols polyethers, 10 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, component 2 is 1 part of carboxylate, 0.1 part of solid amine, 1.2 parts of triethanolamines, 1.2 parts of dimethyl cyclohexyl amines, 2.5 parts of silicone oil, 6 parts, water.
The invention provides another proportioning embodiment of combined polyether, component 1: taking total amount 100 weight portions as the required formula of ratio is as 60 parts of sucrose polyethers, 15 parts of glucitols polyethers, 13 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, described component 2 is 1.5 parts of carboxylates, 0.3 part of solid amine, 0.8 part of triethanolamine, 0.9 part of dimethyl cyclohexyl amine, 2.5 parts of silicone oil, 6 parts, water.
The preparation technology who the invention provides a kind of polyurethane, comprises the steps:
Step S1: add sucrose polyethers, glucitols polyethers and trihydroxylic alcohol polyethers;
Step S2: add water;
Step S3: add silicone oil;
Step S4: add carboxylate, solid amine, triethanolamine and dimethyl cyclohexyl amine;
Step S5: add isocyanates, react with water under the catalytic action of catalyst.
Polyurethane prepared by the present invention is applied in the production of foaming doors, a door body that makes to avoid in the foaming doors production process problem of damaging/scratch, can in plastic-blasting/transfer printing/Lacquer finish operation, obtain surface repairs, improve the quality of products, and extrude because the present invention can reduce leakage bubble/foam after polyurethane foam the work for the treatment of that opposite house body pollutes, enhance productivity; In addition, because just carrying out plastic-blasting/transfer printing/Lacquer finish operation after polyurethane foam in the present invention, finished product is through 200 DEG C of high-temperature bakings before dispatching from the factory, and foam is more stable, is subject to the variation of temperature/environment temperature height can cause a body deformability after not worrying in the time that reality is used.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a polyurethane, comprises isocyanates, it is characterized in that, also comprises combined polyether, and described combined polyether comprises component 1 and component 2; Described component 1 comprises sucrose polyethers, glucitols polyethers and trihydroxylic alcohol polyethers; Described component 2 comprises water.
2. a kind of polyurethane according to claim 1, is characterized in that, described component 2 also comprises catalyst.
3. a kind of polyurethane according to claim 2, is characterized in that, described component 2 also comprises silicone oil.
4. a kind of polyurethane according to claim 3, is characterized in that, described catalyst comprises carboxylate, solid amine, triethanolamine and dimethyl cyclohexyl amine.
5. a kind of polyurethane according to claim 4, is characterized in that, the ratio of described isocyanates and described combined polyether is 1.7:1.
6. a kind of polyurethane according to claim 5, is characterized in that, described component 1: taking total amount 100 weight portions as the required formula of ratio is as 50 ~ 70 parts of sucrose polyethers, 10 ~ 25 parts of glucitols polyethers, 10 ~ 30 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, described component 2 is 1 ~ 1.5 part of carboxylate, 0.1 ~ 0.3 part of solid amine, 0.5 ~ 1.2 part of triethanolamine, 0.6 ~ 1.2 part of dimethyl cyclohexyl amine, 2 ~ 2.5 parts of silicone oil, 3 ~ 8.5 parts, water.
7. a kind of polyurethane according to claim 6, is characterized in that, described component 1: taking total amount 100 weight portions as the required formula of ratio is as 50 parts of sucrose polyethers, 20 parts of glucitols polyethers, 19 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, described component 2 is 1 part of carboxylate, 0.2 part of solid amine, 1 part of triethanolamine, 0.8 part of dimethyl cyclohexyl amine, 2 parts of silicone oil, 6 parts, water.
8. a kind of polyurethane according to claim 6, is characterized in that, described component 1: taking total amount 100 weight portions as the required formula of ratio is as 68 parts of sucrose polyethers, 10 parts of glucitols polyethers, 10 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, described component 2 is 1 part of carboxylate, 0.1 part of solid amine, 1.2 parts of triethanolamines, 1.2 parts of dimethyl cyclohexyl amines, 2.5 parts of silicone oil, 6 parts, water.
9. a kind of polyurethane according to claim 6, is characterized in that, described component 1: taking total amount 100 weight portions as the required formula of ratio is as 60 parts of sucrose polyethers, 15 parts of glucitols polyethers, 13 parts of trihydroxylic alcohol polyethers; In the case of adopting the weight portion proportioning of described component 1, described component 2 is 1.5 parts of carboxylates, 0.3 part of solid amine, 0.8 part of triethanolamine, 0.9 part of dimethyl cyclohexyl amine, 2.5 parts of silicone oil, 6 parts, water.
10. a preparation technology for polyurethane, is characterized in that, comprises the steps:
Step S1: add sucrose polyethers, glucitols polyethers and trihydroxylic alcohol polyethers;
Step S2: add water;
Step S3: add silicone oil;
Step S4: add carboxylate, solid amine, triethanolamine and dimethyl cyclohexyl amine;
Step S5: add isocyanates, react with water under the catalytic action of catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610098054.5A CN105601870A (en) | 2016-02-23 | 2016-02-23 | Polyurethane and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610098054.5A CN105601870A (en) | 2016-02-23 | 2016-02-23 | Polyurethane and preparation process thereof |
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| Publication Number | Publication Date |
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| CN105601870A true CN105601870A (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610098054.5A Pending CN105601870A (en) | 2016-02-23 | 2016-02-23 | Polyurethane and preparation process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113463780A (en) * | 2021-06-11 | 2021-10-01 | 章建芒 | Assembled building structure heat-insulation board |
-
2016
- 2016-02-23 CN CN201610098054.5A patent/CN105601870A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113463780A (en) * | 2021-06-11 | 2021-10-01 | 章建芒 | Assembled building structure heat-insulation board |
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Application publication date: 20160525 |
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