CN102675679B - Foaming agent for heat-preservation polyurethane plastic - Google Patents
Foaming agent for heat-preservation polyurethane plastic Download PDFInfo
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- CN102675679B CN102675679B CN201210144837.4A CN201210144837A CN102675679B CN 102675679 B CN102675679 B CN 102675679B CN 201210144837 A CN201210144837 A CN 201210144837A CN 102675679 B CN102675679 B CN 102675679B
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- methyl
- formiate
- 365mfc
- pentane
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Abstract
The invention provides a foaming agent for heat-preservation polyurethane plastic, comprising methyl formate. The foaming foam has the advantages of low heat conductivity coefficient, good foaming mobility, strong substrate bonding force, low molding density, and environment-friendly and energy-saving materials.
Description
Technical field
The present invention relates to a kind of heat-insulation foam material, especially a kind of whipping agent for polyurethane rigid foam plastic.
Background technology
The whipping agent of current most of foamed thermal insulating adopts 141b, and this technology belongs to cambic substitute technology, does not belong to the equivalent material of environmental protection; Part is used the pentane-blown technology of environmental protection, but explosive inflammable; Chinese patent ZL200310112177.2, denomination of invention: a kind of polyurethane rigid foam plastic, adopts HFC-245fa as whipping agent, but need low temperature 5-10 ℃ use, difficult operation, complex process.
Summary of the invention
The object of the invention is: a kind of whipping agent for thermal-insulating polyurethane plastics is provided, and it has easy to operate, and the technique scope of application is wide, and material thermal conductivity is low, in use do not discharge the gas damaging the ozone layer.
The present invention is achieved in that its special character of a kind of whipping agent for thermal-insulating polyurethane plastics is: it comprises methyl-formiate.
The described whipping agent for thermal-insulating polyurethane plastics, its special character is: it also comprises 365mfc; Or the mixture of 365mfc and HFC-227ea.
The described whipping agent for thermal-insulating polyurethane plastics, its special character is: also comprise pentane, described pentane is wherein a kind of of pentamethylene, Skellysolve A and iso-pentane.
The described whipping agent for thermal-insulating polyurethane plastics, its special character is: also comprise HFC-245fa.
The described whipping agent for thermal-insulating polyurethane plastics, its special character is: also comprise R-134a.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
Its special character of whipping agent for thermal-insulating polyurethane plastics is: it comprises methyl-formiate.When using as whipping agent, the weight part of combined polyether is as follows:
Methyl-formiate 3～40; Water 0.3～3; Catalyst aid 1～5;
Polyethers or polyester 45～85.
In the present embodiment, by following three kinds of weight part ratios, take raw material respectively,
(1) methyl-formiate 3; Water 0.3; Catalyst aid 1; Polyethers or polyester 85;
(2) methyl-formiate 40; Water 3; Catalyst aid 5; Polyethers or polyester 45;
(3) methyl-formiate 20; Water 2; Catalyst aid 3; Polyethers or polyester 60;
Described catalyst aid can be amines catalyst, silicone oil, as triethylene diamine.
Difference test shows that: there is good effect.By adjusting the umber of methyl-formiate, can effectively adjust the density of free foaming.
Using method: by polyethers or polyester and catalyst aid, water mixing and stirring, then 3 parts of methyl-formiate whipping agents mix with above-mentioned materials in 40 ℃ add above-mentioned (1) below, make combined polyether.For reducing foamable reaction, produce CO
2, reducing thermal conductivity, can select to reduce water-content in formula, it is low that this frothing foam has thermal conductivity, and foaming good fluidity, foamy body is high, base material bounding force strong, molding density is low, material environment friendly is energy-conservation.
At the present embodiment, can also add and also comprise R-134a 5-6 part.Its effect is to reduce Buddhist point cost.
Embodiment 2
Whipping agent for thermal-insulating polyurethane plastics, comprises 365mfc, methyl-formiate.
Ratio of weight and number is:
3～40 parts of methyl-formiates; 0.1～5 part of 365mfc.
Add the boiling point that 365mfc can reduce whipping agent, execute-in-place is convenient.
When using as whipping agent, combined polyether weight part ratio is as follows:
Methyl-formiate 3～40; 3 65mfc 0.1～5; Water 0.3～3;
Catalyst aid 1～5; Polyethers or polyester 45～85.
In the present embodiment, by following three kinds of weight part ratios, take raw material respectively,
(1) methyl-formiate 3; 365mfc 0.1; Water 0.3; Catalyst aid 1;
Polyethers or polyester 85;
(2) methyl-formiate 40; 365mfc (HFC-227ea) 3; Water 3; Catalyst aid 5; Polyethers or polyester 45;
(3) methyl-formiate 20; 365mfc (HFC-227ea) 5; Water 2; Catalyst aid 3; Polyethers or polyester 60.
Using method: first 40 parts of methyl-formiates are mixed in proportion and make mixed foaming agent with 3 parts of 365mfc (HFC-227ea), by 45 parts of polyethers or polyester and 5 parts of catalyst aids, 3 parts of mixing and stirring of water, at 30 ℃, add respectively below above-mentioned mixed foaming agent to mix with it again, make combined polyether.For reducing foamable reaction, produce CO
2reduce thermal conductivity, can select to reduce water-content in formula, by the combined polyether of above-mentioned preparation and isocyanic ester by a certain percentage hybrid reaction generate the polyurethane foam that contains methyl-formiate and HFC-227ea, it is low that this frothing foam has thermal conductivity, and foaming good fluidity, foamy body are high, base material bounding force strong, molding density is low, material environment friendly is energy-conservation.
In an embodiment, can be also that the mixture of 365mfc and HFC-227ea replaces 365mfc, its ratio of weight and number is:
365mfc 8-9 HFC-227ea 1-2；
0.1～5 part, the mixture of umber used: 365mfc and HFC-227ea.
Embodiment 3
Whipping agent for thermal-insulating polyurethane plastics, comprises 365mfc, methyl-formiate, pentane.Pentane
Comprise pentamethylene, Skellysolve A and iso-pentane.
Ratio of weight and number:
Methyl-formiate 2～20; 365mfc 0～5; Pentane 1～20;
Described pentane is wherein a kind of of pentamethylene, Skellysolve A and iso-pentane.
Added in pentamethylene, Skellysolve A or iso-pentane a kind ofly, increased the mobility of system, the density distribution that simultaneously foams is more even, reduces material cost.
When using as whipping agent, combined polyether weight part ratio is as follows:
Methyl-formiate 2～20; 365mfc 0～5; Pentane 1～20;
Water 0.3～3; Catalyst aid 1～5; Polyethers or polyester 45～85.
In the present embodiment, by following three kinds of weight part ratios, take raw material respectively,
(1) methyl-formiate 3; 365mfc (HFC-227ea) 0.1; Pentane 1; Water 0.3; Catalyst aid 1; Polyethers or polyester 85;
(2) methyl-formiate 10; 365mfc 3; Pentane 20; Water 3; Catalyst aid 5; Polyethers or polyester 65;
(3) methyl-formiate 20; 365mfc 5; Pentane 10; Water 2; Catalyst aid 3; Polyethers or polyester 60.
Using method: first 3 parts of methyl-formiates are mixed in proportion and make mixed foaming agent with 365mfc0.1 part, by 85 parts of polyethers or polyester and 1 part of catalyst aid, 0.3 part of mixing and stirring of water, at 30 ℃, add respectively below 1 part of above-mentioned mixed foaming agent, pentane to mix with it again, make combined polyether.For reducing foamable reaction, produce CO
2, reduce thermal conductivity, can select to reduce water-content in formula, the polyurethane foam of pentane, it is low that this frothing foam has thermal conductivity, and foaming good fluidity, foamy body is high, base material bounding force strong, molding density is low, material environment friendly is energy-conservation.
In an embodiment, can be also that the mixture of 365mfc and HFC-227ea replaces 365mfc, its ratio of weight and number is:
365mfc 8-9；HFC-227ea 1-2。
At the present embodiment, can also add and also comprise R-134a 5-6 part.Its effect is to reduce Buddhist point cost.
Embodiment 4
Whipping agent for thermal-insulating polyurethane plastics, comprises 365mfc, methyl-formiate and HFC-245fa.
Ratio of weight and number:
Methyl-formiate 2～30; 365mfc 0～5; HFC-245fa 2～30.
This combination makes the abscess of foam finer and closely woven, and foam thermal conductivity reduces.
When using as whipping agent, combined polyether weight part ratio is as follows:
Methyl-formiate 2～30; 365mfc 0～5; HFC-245fa 2～30;
Water 0.3～3; Catalyst aid: 1～5; Polyethers or polyester 45～85.
In an embodiment, according to the upper limit of weight part ratio, lower limit and intermediate value, taking raw material all can implement.
In the present embodiment, by following three kinds of weight part ratios, take raw material respectively,
(1) methyl-formiate 3; 365mfc 0.1; HFC-245fa 30; Water 0.3; Catalyst aid 1; Polyethers or polyester 75;
(2) methyl-formiate 10; 365mfc 3; HFC-245fa 15; Water 3; Catalyst aid 5; Polyethers or polyester 65;
(3) methyl-formiate 30; 365mfc 5; HFC-245fa 2; Water 2; Catalyst aid 3; Polyethers or polyester 60.
Using method: first methyl-formiate and 365mfc are mixed in proportion and make mixed foaming agent, by polyethers or polyester and catalyst aid, water mixing and stirring, at 30 ℃, add below 2～30 parts of 2～30 parts of above-mentioned mixed foaming agents, HFC-245fa to mix with it again, make combined polyether.For reducing foamable reaction, produce CO
2reduce thermal conductivity, can select to reduce water-content in formula, by the combined polyether of above-mentioned preparation and isocyanic ester by a certain percentage hybrid reaction generate the polyurethane foam that contains methyl-formiate and 365mfc, HFC-245fa, it is low that this frothing foam has thermal conductivity, and foaming good fluidity, foamy body are high, base material bounding force strong, molding density is low, material environment friendly is energy-conservation.
Embodiment 5
Whipping agent for thermal-insulating polyurethane plastics, comprises 365mfc, methyl-formiate, pentane and HFC-245fa.
This combination can comprehensive raising foam mobility, density distribution is even, thermal conductivity reduces simultaneously, abscess is fine and closely woven.
Ratio of weight and number
Methyl-formiate 1～15; 365mfc 0～5; Pentane 2～18;
HFC-245fa 1～15。
When using as whipping agent, combined polyether weight part ratio is as follows:
Methyl-formiate 1～15; 365mfc 0～5; Pentane 2～18;
HFC-245fa 1～15; Water 0.3～3; Catalyst aid 1～5;
Polyethers or polyester 45～85.
In an embodiment, according to the upper limit of weight part ratio, lower limit and intermediate value, taking raw material all can implement.
In the present embodiment, by following three kinds of weight part ratios, take raw material respectively,
(1) methyl-formiate 1; 365mfc 0.1; Pentane 2; HFC-245fa 15; Water 0.3; Catalyst aid 1; Polyethers or polyester 85;
(2) methyl-formiate 8; 365mfc 3; Pentane 8; Water 3; HFC-245fa 6; Catalyst aid 5; Polyethers or polyester 75;
(3) methyl-formiate 15; 365mfc 5; Pentane 2; HFC-245fa 1; Water 2; Catalyst aid 3; Polyethers or polyester 75.
Using method: first methyl-formiate and 365mfc (HFC-227ea) are mixed in proportion and make mixed foaming agent, by polyethers or polyester and catalyst aid, water mixing and stirring, at 30 ℃, add respectively below 1～15 part of 1～15 part of above-mentioned mixed foaming agent, 2～18 parts of pentanes, HFC-245fa to mix with it again, make combined polyether.For reducing foamable reaction, produce CO
2reduce thermal conductivity, can select to reduce water-content in formula, by the combined polyether of above-mentioned preparation and isocyanic ester by a certain percentage hybrid reaction generate the polyurethane foam that contains HFC-365mfc and HFC-227ea, pentane, HFC-245fa, it is low that this frothing foam has thermal conductivity, and foaming good fluidity, foamy body are high, base material bounding force strong, molding density is low, material environment friendly is energy-conservation.
Claims (5)
1. the whipping agent for thermal-insulating polyurethane plastics is characterized in that: it comprises methyl-formiate, and when using as whipping agent, the weight part of combined polyether is as follows:
Methyl-formiate 3～40; Water 0.3～3;
Catalyst aid 1～5; Polyethers or polyester 45～85;
Using method:
(1) by polyethers or polyester and catalyst aid, water mixing and stirring;
(2) again below 40 ℃, methyl-formiate whipping agent is added, the material mixing that methyl-formiate whipping agent and step (1) are made is even, makes combined polyether.
2. the whipping agent for thermal-insulating polyurethane plastics is characterized in that: it is comprised of 365mfc and methyl-formiate;
3～40 parts of methyl-formiates; 0.1～5 part of 365mfc;
When using as whipping agent, combined polyether weight part ratio is as follows:
Methyl-formiate 3～40; 365mfc 0.1～5; Water 0.3～3;
Catalyst aid 1～5; Polyethers or polyester 45～85;
Using method:
(1) methyl-formiate and 365mfc part are mixed in proportion and make mixed foaming agent;
(2) by polyethers or polyester and catalyst aid, water mixing and stirring, then at 30 ℃, add respectively below step (1) to make mixed foaming agent to mix with it, make combined polyether.
3. the whipping agent for thermal-insulating polyurethane plastics is characterized in that: it is by 365mfc, methyl-formiate, pentane; Pentane comprises that pentamethylene, Skellysolve A and iso-pentane form;
Ratio of weight and number:
Methyl-formiate 2～20; 365mfc 0～5; Pentane 1～20;
Described pentane is wherein a kind of of pentamethylene, Skellysolve A and iso-pentane;
When using as whipping agent, combined polyether weight part ratio is as follows:
Methyl-formiate 2～20; 365mfc0～5; Pentane 1～20;
Water 0.3～3; Catalyst aid 1～5; Polyethers or polyester 45～85;
Using method:
(1) methyl-formiate and 365mfc are mixed in proportion and make mixed foaming agent,
(2) by polyethers or polyester and catalyst aid, water mixing and stirring, then add respectively below mixed foaming agent, the pentane that step (1) is made to mix with it at 30 ℃, make combined polyether.
4. the whipping agent for thermal-insulating polyurethane plastics is characterized in that: it is comprised of 365mfc, methyl-formiate and HFC-245fa;
Ratio of weight and number:
Methyl-formiate 2～30; 365mfc0～5; HFC-245fa2～30;
When using as whipping agent, combined polyether weight part ratio is as follows:
Methyl-formiate 2～30; 365mfc0～5; HFC-245fa2～30;
Water 0.3～3; Catalyst aid: 1～5; Polyethers or polyester 45～85;
Using method:
(1) methyl-formiate and 365mfc are mixed in proportion and make mixed foaming agent,
(2) by polyethers or polyester and catalyst aid, water mixing and stirring, then at 30 ℃, add below that step (1) is made mixed foaming agent, HFC-245fa mixes with it, make combined polyether.
5. the whipping agent for thermal-insulating polyurethane plastics is characterized in that: it by 365mfc, methyl-formiate,
Pentane and HFC-245fa form;
Methyl-formiate 1～15,365mfc0～5, pentane 2～18,
HFC-245fa1～15；
When using as whipping agent, combined polyether weight part ratio is as follows:
Methyl-formiate 1～15; 365mfc0～5; Pentane 2～18;
HFC-245fa1～15; Water 0.3～3; Catalyst aid 1～5;
Polyethers or polyester 45～85;
Using method:
(1) methyl-formiate and 365mfc are mixed in proportion and make mixed foaming agent;
(2) polyethers or polyester and catalyst aid, water mixing and stirring, then add respectively below step (1) mixed foaming agent, pentane, HFC-245fa to mix with it at 30 ℃, make combined polyether.
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| CN201210144837.4A CN102675679B (en) | 2012-05-10 | 2012-05-10 | Foaming agent for heat-preservation polyurethane plastic |
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| CN108164672A (en) * | 2017-12-28 | 2018-06-15 | 青岛海尔股份有限公司 | Polyurethane rigid foam plastic and preparation method thereof |
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| CN101665578A (en) * | 2009-09-28 | 2010-03-10 | 关志强 | Foaming agent used for thermal-insulating polyurethane plastics |
| CN102443134A (en) * | 2011-09-16 | 2012-05-09 | 广东万华容威聚氨酯有限公司 | Polyurethane rigid foam and preparation method thereof |
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| CN102167792B (en) * | 2010-11-29 | 2012-07-25 | 山东东大一诺威新材料有限公司 | Mixed foaming agent-blown polyurethane rigid foam composite polyether |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101665578A (en) * | 2009-09-28 | 2010-03-10 | 关志强 | Foaming agent used for thermal-insulating polyurethane plastics |
| CN102443134A (en) * | 2011-09-16 | 2012-05-09 | 广东万华容威聚氨酯有限公司 | Polyurethane rigid foam and preparation method thereof |
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Effective date of registration: 20160413 Address after: 528434 Guangdong province Zhongshan Town South Industrial Park (South Village Road) Patentee after: Zhongshan city hakushi Chemical Technology Co. Ltd. Address before: Polyurethane Co. Ltd 528427 Guangdong province Zhongshan city Nantou town Huinan industrial zone of the Bay Road hakushi Patentee before: Guan Zhiqiang Patentee before: Feng Yuncheng Patentee before: Mai Jingheng Patentee before: Liang Qiuming |