CN106188615A - Triple combination foaming agent, hard polyurethane foam and manufacture method thereof - Google Patents
Triple combination foaming agent, hard polyurethane foam and manufacture method thereof Download PDFInfo
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- CN106188615A CN106188615A CN201510221176.4A CN201510221176A CN106188615A CN 106188615 A CN106188615 A CN 106188615A CN 201510221176 A CN201510221176 A CN 201510221176A CN 106188615 A CN106188615 A CN 106188615A
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Abstract
The invention provides a kind of triple combination foaming agent, including the component of following three kinds of mass parts: Pentamethylene. 9-1 mass parts, isopentane 5-1 mass parts, trifluorochloroethylene LBA 2-32 mass parts.Use hard polyurethane foam prepared by above-mentioned triple combination foaming agent, including the component of following mass parts: combined polyether 100 parts, above-mentioned triple combination foaming agent 10-26 part, isocyanates 120-150 part.Additionally provide the manufacture method of above-mentioned hard polyurethane foam.This ternary foam process can effectively reduce the heat conductivity of polyurethane foam, reduces ice box energy consumption；Equal densities downforce foamy body strengthens, needed for ice box, foam density can reduce, therefore the shot of ice box complete machine can be reduced, in ice box demand one timing, decrease raw-material waste, decrease the production of intractable hard polyurethane foam simultaneously, decrease the pollution to environment；The hardening time of foam shortens 10-15%, improves production efficiency.
Description
Technical field
The invention belongs to foaming thermal-insulating technical field, specifically, relate to a kind of triple combination foaming agent, the hard polyurethane foam using this triple combination foaming agent to make and the manufacture method of this hard polyurethane foam.
Background technology
Tradition ice box uses one-component alkane physical blowing agent, hard polyurethane foam is formed after isocyanates and polyether polyol react during foaming, heat conductivity is higher, comprcssive strength is relatively low, foamed product core density is big, raw materials consumption amount is many, and productive temp is relatively slow, causes higher manufacturing cost.
At present, the manufacture of part ice box uses many components physical blowing agent, as pentane adds pentafluoropropane mixed foaming technique, utilize third generation blowing agents HFC-245fa(molecular formula CF3CH2CF2H) low boiling (15.3 DEG C) and obvious reduction effect to heat conductivity, make itself and low cost pentane foaming agent carry out the mixing of proper ratio, thus reduce foam thermal conductivity and product groundwater increment purpose.
Although the manufacture of above-mentioned part ice box uses multicomponent physical blowing agent technique, heat conductivity can be reduced, reduce injection doses simultaneously, but third generation blowing agents HFC-245fa(molecular formula CF3CH2CF2H) the warm latent value of the GWP(earth) higher, the speciality of its inadequate environmental protection causes it to be limited by different geographical environmental regulation when being applied by high-load, and HFC-245fa price is higher, and the probability being eliminated in future is the highest, causes product competitiveness relatively low.
Summary of the invention
It is an object of the invention at least to solve one of technical problem present in prior art.
To this end, the purpose of the first aspect of the invention is, it is provided that a kind of heat conductivity is little, the triple combination foaming agent of lower-cost hard polyurethane foam.
The purpose of the second aspect of the invention is, it is provided that a kind of hard polyurethane foam using above-mentioned triple combination foaming agent to make.
The purpose of the third aspect of the invention is, it is provided that a kind of manufacture method of above-mentioned hard polyurethane foam.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions:
On the one hand, the present invention provides a kind of triple combination foaming agent, including the component of following three kinds of mass parts: Pentamethylene. 9-1 mass parts, isopentane 5-1 mass parts, trifluorochloroethylene LBA 2-32 mass parts.
Preferably, the weight portion formula of triple combination foaming agent, Pentamethylene. 9 parts, isopentane 4.5 parts, trifluorochloroethylene LBA 3.5 parts.
On the other hand, the present invention also provides for a kind of hard polyurethane foam, including the component of following mass parts: combined polyether 100 parts, above-mentioned triple combination foaming agent 10-26 part, isocyanates (PMDI) 120-150 part.
Wherein isocyanates (PMDI) is black material, and combined polyether+foaming agent is white material, quality proportioning 1:1.16-1.28 between white material and black material.
Preferably, Pentamethylene. and isopentane add up to 8-14 part, trifluorochloroethylene LBA 3-10 part.
The present invention proposes a kind of method that Diversity technology prepares polyurethane rigid foam plastic.
Combined polyether is mixed with by polyether polyols alcohol monomer and water, catalyst, foam stabiliser etc. and forms, referred to as extra dry white wine material, is the most common primary raw material for making hard polyurethane foam.
Foaming agent is Pentamethylene., isopentane and trifluorochloroethylene LBA(molecular formula CF3-CH=CHCl) composition mix.
Another further aspect, the present invention also provides for the manufacture method of a kind of hard polyurethane foam, comprises the following steps:
S1 combined polyether is delivered to static mixer by delivery pump；
Pentamethylene., isopentane circulating pump are delivered in static mixer by S2, are delivered in static mixer by trifluorochloroethylene LBA circulating pump, and said mixture uniformly mixes in static mixer, control temperature 18-25 DEG C, pressure 1-6bar；
S3, by the mixture in static mixer and isocyanates mix homogeneously, then uses high pressure foaming machine to inject in ice box, foamable reaction, temperature 18-22 DEG C, and pressure 110-150bar prepares hard polyurethane foam.
The thermal conductivity of foam plastics is typically made up of three heat transfer parts such as gas conduction, solid structure heat conduction, radiation heat conduction: λ foam=λ gas (50%)+λ solid (20%)+λ radiates (30%), wherein foaming agent accounts for leading impact, λ radiation is affected the biggest by foam structure, abscess is the thinnest, and λ radiation reduces the most；Trifluorochloroethylene LBA is due to its low boiling (19.0 DEG C) attribute, and its steam heat conductivity is relatively low, and ring isopentane and trifluorochloroethylene LBA carry out the mixed foaming of proper ratio, and abscess can be made finer and smoother, and cell size distribution is uniform, reduces thermal conductivity.
nullThis invention triple combination foaming agent，Make use of forth generation foaming agent trifluorochloroethylene LBA(molecular formula CF3-CH=CHCl) low boiling (19 DEG C) and environment-friendly advantage，Use trifluorochloroethylene LBA(molecular formula CF3-CH=CHCl of low content)，Pentamethylene. (a kind of alicyclic,Molecular formula C5H10)/isopentane is (also known as 2-methybutane，Chemical formula is C5H12)/LBA blend reason foaming system production hard polyurethane foam，Prove through laboratory test and factory's small lot checking，Compare tradition one-component foam process，Heat conductivity reduces 5-10%，Shot reduces about 5-10%，Accelerate 10-15% hardening time，Improve the mobility of foamed material，Meet the whole world requirement to environmental protection，It it is a kind of brand-new foam process technology.
Using Pentamethylene ./isopentane/LBA that foaming system is blended, the serial refrigerator of production, through system test, energy consumption reduces 5-10%, improves energy consumption hierarchy level, reaches the technological requirement of volume production.
Use Pentamethylene ./isopentane/LBA that foaming system is blended, the serial refrigerator produced, equal densities downforce foamy body strengthens, needed for ice box, foam density can reduce, therefore can reduce the shot of ice box complete machine, in ice box demand one timing, decrease raw-material waste, decrease the production of intractable hard polyurethane foam simultaneously, decrease the pollution to environment；
Use Pentamethylene ./isopentane/LBA that foaming system is blended, the serial refrigerator of production, shortens 10-15%, improves production efficiency the hardening time of foam.
Use Pentamethylene ./isopentane/LBA that result that foaming system on Haier refrigerator use is blended and show that there is energy-saving and environmental protection, cost performance high.Reach similar technique world neckFirst level。
This ternary foam process can effectively reduce the heat conductivity of polyurethane foam, reduces ice box energy consumption；Equal densities downforce foamy body strengthens, needed for ice box, foam density can reduce, therefore the shot of ice box complete machine can be reduced, in ice box demand one timing, decrease raw-material waste, decrease the production of intractable hard polyurethane foam simultaneously, decrease the pollution to environment；The hardening time of foam shortens 10-15%, improves production efficiency.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further detailed explanation.
Embodiment 1
The mass parts formula of hard polyurethane foam:
White material: combined polyether 100 parts, Pentamethylene. 9 parts, isopentane 4.5 parts, trifluorochloroethylene LBA 3.5 parts；
Black material: isocyanates (PMDI) 137 parts.
The manufacturing step of hard polyurethane foam is as follows:
S1 combined polyether is delivered to static mixer by delivery pump；
Pentamethylene., isopentane circulating pump are delivered in static mixer by S2, are delivered in static mixer by trifluorochloroethylene LBA circulating pump, and said mixture uniformly mixes in static mixer, control temperature 22 DEG C, pressure 2bar；
S3, by the mixture in static mixer and isocyanates mix homogeneously, then uses high pressure foaming machine to inject in ice box, foamable reaction, temperature 20 DEG C, and pressure 130bar prepares hard polyurethane foam.
In practical operation step, being pumped to blender after Pentamethylene. in foaming agent and isopentane premix, trifluorochloroethylene LBA is individually pumped to blender, mixes with combined polyether.
In the present embodiment, the average core density of the polyurethane foam made is 30.0kg/m3, mean compressive strength 183kpa, minimum comprcssive strength 160kpa, average shrinkage ratio 0.9%, maximum contraction rate 3.1%, heat conductivity is 18.9mW/m k, compared with existing polyurethane foam, its average core density is lower, and comprcssive strength is high, and shrinkage factor is low, the quality of the polyurethane foam of same volume is less, used material is less, and does not affect the quality of polyurethane foam, it is possible to decrease the manufacturing cost of polyurethane foam；The heat conductivity of polyurethane foam is the least, and heat preservation and insulation is excellent, improves the heat-insulating property of the insulating product being made from, and reduces the energy consumption of refrigeration plant；The polyurethane foam that the present embodiment provides simultaneously has higher compressive strength and dimensional stability.
Embodiment 2
The mass parts formula of hard polyurethane foam:
White material: combined polyether 100 parts, Pentamethylene. 8.5 parts, isopentane 4.5 parts, trifluorochloroethylene LBA 5.5 parts；
Black material: isocyanates (PMDI) 140 parts.
The manufacturing step of the present embodiment is with embodiment 1, and the average core density of the hard polyurethane foam prepared is 29.8kg/m3, mean compressive strength 171kpa, minimum comprcssive strength 155kpa, average shrinkage ratio 1.2%, maximum contraction rate 3.7%, heat conductivity is 18.5mW/m k.
Embodiment 3
The mass parts formula of hard polyurethane foam:
White material: combined polyether 100 parts, Pentamethylene. 8.5 parts, isopentane 4.5 parts, trifluorochloroethylene LBA 7 parts；
Black material: isocyanates (PMDI) 142 parts.
The manufacturing step of the present embodiment is with embodiment 1, and the average core density of the hard polyurethane foam prepared is 29.4kg/m3, mean compressive strength 166kpa, minimum comprcssive strength 152kpa, average shrinkage ratio 1.4%, maximum contraction rate 4.5%, heat conductivity is 18.2mW/m k.
The above, be only presently preferred embodiments of the present invention, is not the restriction that the present invention makees other form, and any those skilled in the art are changed possibly also with the technology contents of the disclosure above or are modified as the Equivalent embodiments of equivalent variations.But every without departing from technical solution of the present invention content, any simple modification, equivalent variations and remodeling above example made according to the technical spirit of the present invention, still fall within the protection domain of technical solution of the present invention.
Claims (6)
1. a triple combination foaming agent, it is characterised in that: include the component of following three kinds of mass parts, Pentamethylene. 9-1 mass parts, isopentane 5-1 mass parts, trifluorochloroethylene LBA 2-32 mass parts.
Triple combination foaming agent the most according to claim 1, it is characterised in that: the weight portion formula of described triple combination foaming agent, Pentamethylene. 9 parts, isopentane 4.5 parts, trifluorochloroethylene LBA 3.5 parts.
3. a hard polyurethane foam, it is characterised in that: include the component of following mass parts, triple combination foaming agent 10-26 part, isocyanates 120-150 part according to any one of combined polyether 100 parts, the claims 1-2.
Hard polyurethane foam the most according to claim 3, it is characterised in that: isocyanates is black material, and combined polyether+foaming agent is white material, quality proportioning 1:1.16-1.28 between white material and black material.
Hard polyurethane foam the most according to claim 3, it is characterised in that: Pentamethylene. and isopentane in described triple combination foaming agent add up to 8-14 part, trifluorochloroethylene LBA 3-10 part.
6. the manufacture method of a hard polyurethane foam, it is characterised in that: comprise the following steps,
S1 combined polyether is delivered to static mixer by delivery pump；
Pentamethylene., isopentane circulating pump are delivered in static mixer by S2, are delivered in static mixer by trifluorochloroethylene LBA circulating pump, and said mixture uniformly mixes in static mixer, control temperature 18-25 DEG C, pressure 1-6bar；
S3, by the mixture in static mixer and isocyanates mix homogeneously, then uses high pressure foaming machine to inject in ice box, foamable reaction, temperature 18-22 DEG C, and pressure 110-150bar prepares hard polyurethane foam.
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Cited By (6)
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| CN106700119A (en) * | 2016-12-26 | 2017-05-24 | 青岛海尔股份有限公司 | Foaming agent composition and polyurethane hard foam |
| CN106832181A (en) * | 2017-02-28 | 2017-06-13 | 青岛海尔特种电冰柜有限公司 | A kind of polyurethane foam material and preparation method thereof |
| CN108084388A (en) * | 2017-12-13 | 2018-05-29 | 上海东大聚氨酯有限公司 | A kind of electric heater combined polyether, polyurethane and preparation method |
| CN108727551A (en) * | 2017-04-19 | 2018-11-02 | 科思创德国股份有限公司 | A kind of hard polyurethane foams and the preparation method and application thereof |
| CN110105520A (en) * | 2019-05-05 | 2019-08-09 | 深圳市盈石科技有限公司 | A kind of heat preservation hard polyurethane foams and preparation method thereof |
| CN113563555A (en) * | 2021-08-17 | 2021-10-29 | 长虹美菱股份有限公司 | Polyurethane foaming material and foaming process thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106700119A (en) * | 2016-12-26 | 2017-05-24 | 青岛海尔股份有限公司 | Foaming agent composition and polyurethane hard foam |
| CN106700119B (en) * | 2016-12-26 | 2020-03-17 | 青岛海尔股份有限公司 | Blowing agent composition and polyurethane rigid foam |
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| CN108727551A (en) * | 2017-04-19 | 2018-11-02 | 科思创德国股份有限公司 | A kind of hard polyurethane foams and the preparation method and application thereof |
| CN108084388A (en) * | 2017-12-13 | 2018-05-29 | 上海东大聚氨酯有限公司 | A kind of electric heater combined polyether, polyurethane and preparation method |
| CN110105520A (en) * | 2019-05-05 | 2019-08-09 | 深圳市盈石科技有限公司 | A kind of heat preservation hard polyurethane foams and preparation method thereof |
| CN113563555A (en) * | 2021-08-17 | 2021-10-29 | 长虹美菱股份有限公司 | Polyurethane foaming material and foaming process thereof |
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