CN106751723A - A kind of insulation material for solar thermal collection system and preparation method thereof - Google Patents
A kind of insulation material for solar thermal collection system and preparation method thereof Download PDFInfo
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
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- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
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- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
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Abstract
The present invention relates to a kind of insulation material for solar thermal collection system and preparation method thereof, insulation material is prepared from by the component including following weight portion content：11 19 parts of 60 75 parts of polyurethane resin, 20 30 parts of polyacrylic acid, 24 parts of initiator, 20 30 parts of auxiliary agent, 13 parts of catalyst, 24 parts of stabilization aid, 9 15 parts of foaming agent and filler, foaming agent are included to one or two in benzene sulfonyl hydrazide or unifor；During preparation, first make polyurethane resin that banburying occur under initiator and catalyst action with polyacrylic acid and react, carry out low-temp reaction under foaming agent effect afterwards, finally reacted with filler and stabilization aid.Compared with prior art, the present invention is crosslinked by polyurethane resin with the double-strand of polyacrylic acid, insulation material structure is set more to stablize, and with good thermal and insulating performance, resistance to elevated temperatures and decay resistance, atmospheric ozone layer, safety and environmental protection will not be destroyed, and reaction process condition is gentle, low production cost, it is easy to carry out industrialized production.
Description
Technical field
The invention belongs to solar energy utilization technique field, be related to a kind of insulation material for solar thermal collection system and
Its preparation method.
Background technology
With the continuous increase of the increasingly in short supply and environmental protection pressure of energy resources, countries in the world all start Devoting Major Efforts To Developing can be again
The raw energy, wherein, solar energy is widely used to as most one of best regenerative resource of wide, development prospect is developed
All trades and professions, solar water heater industry is exactly one of them.
At present, the insulation material commonly used in the collecting system of solar water heater is polyurethane heat insulation material, due to production
The raw material storage environment of polyurethane heat insulation material is general more simple and crude, it is easy to makes raw material that degradation failure to occur, reduces poly- ammonia
The heat-insulating property of ester insulation material.Polyurethane heat insulation material in process of production, because its own characteristic, production technology and workman behaviour
The reason for making each side such as technical ability, the problem of generally existing foam contraction, is easily caused in the collecting system of solar water heater
Foam comes off with casing part or all comes off, and ultimately results in casing deformation, vacuum mouth of pipe foam cracking, or even inner bag occurs
Polyurethane hard foam and shell between laterally or longitudinally ftractures, and greatly reduces heat insulation effect.Production polyurethane heat insulation material
Conventional foaming agent such as CFC-11 (fluoro trichloromethane) etc. is fluorine-containing foaming agent, easily in production polyurethane heat insulation material
During, substantial amounts of fluorine-containing material is produced, there is dissipation effect to atmospheric ozone layer, destroy ecological environment.Although Ye You enterprises
CFC-11 is substituted as foaming agent with HCFC-141b (a fluorine dichloroethanes), the dissipative exponent of atmospheric ozone layer is decreased,
But still destruction can be produced to atmospheric ozone layer, and increasingly accumulate, thus it is broken to atmospheric ozone layer to be fully solved foaming agent
Bad problem.And Europe wait some areas also useful pentamethylene as floride-free foaming agent, but its production polyurethane heat insulation material
Inflammable, security is relatively low, is restricted its application field.
The content of the invention
The purpose of the present invention is exactly to provide a kind of use of safety and environmental protection for the defect for overcoming above-mentioned prior art to exist
Insulation material in solar thermal collection system and preparation method thereof.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of insulation material for solar thermal collection system, the insulation material is by the component including following weight portion content
It is prepared from：Polyurethane resin 60-75 parts, polyacrylic acid 20-30 parts, initiator 2-4 parts, auxiliary agent 20-30 parts, catalyst 1-3
Part, stabilization aid 2-4 part, foaming agent 9-15 parts and filler 11-19 parts, described foaming agent is including to benzene sulfonyl hydrazide or to toluene
One or two in sulfohydrazide.
Described polyurethane resin includes the one kind or two in EU resin or polyolefin-type polyurethane resin
Kind.
Described polyacrylic acid is polyhydroxy polycarboxylic acrylic acid.
Described initiator include di-t-butyl peroxide, cumyl peroxide or methyl ethyl ketone peroxide in one kind or
It is various.This several material has good stability at normal temperatures, can be dispersed in resin with merging with stabilizer.
Described auxiliary agent includes one or two in normal heptane or n-butanol.Normal heptane and n-butanol are respectively provided with good
Solute effect, and can naturally be volatilized in banburying course of reaction, catalyst is disperseed, make reaction more abundant.
Described catalyst includes one or more in tetrabutyl titanate, isopropyl titanate or tetraethyl titanate.With metatitanic acid
Ester can promote polyurethane resin to occur interior as catalyst by alkoxy directly and hydroxyl or carboxyl carry out chemical action
Crosslinked action, and there is esterification with polyacrylic acid.
Described stabilization aid includes in 2- ethyl acetic acids lead, acetylacetone,2,4-pentanedione, rhenocure CA or 2-phenylindone
Plant or various.Stabilization aid has good cross-linked material rock-steady structure, ensure that the bonding stabilization of cross-linking reaction.
Described filler includes one or two in nano silicon or nano-calcium carbonate.
A kind of preparation method of insulation material for solar thermal collection system, the method specifically includes following steps：
(1) after polyurethane resin is mixed with initiator, polyacrylic acid is added dropwise under stirring, afterwards at 80-110 DEG C
Under carry out sealing reaction 3-8h；
(2) catalyst and auxiliary agent are separately added into, and banburying reaction 2-4h is carried out at 90-105 DEG C；
(3) foaming agent is added, and 1-2h is reacted at 30-40 DEG C；
(4) it is separately added into filler and stabilization aid, is stood after stirring 1-2h, that is, obtains described for solar energy heating system
The insulation material of system.
In step (1), stir speed (S.S.) is 700-1000r/min, and the drop rate of described polyacrylic acid is 5-8g/min,
The pressure of described sealing reaction is the 110-150% of atmospheric pressure；
In step (2), described banburying reaction is carried out under stirring, and stir speed (S.S.) is 1000-1500r/min；
In step (3), described reaction is carried out under stirring, and stir speed (S.S.) is 500-800r/min；
In step (4), described stirring is stirred for normal temperature is sealed, and stir speed (S.S.) is 300-500r/min, is stood after stirring
8-10h。
Compared with prior art, the invention has the characteristics that：
1) it is crosslinked using two-period form, is crosslinked by the double-strand of polyurethane resin and polyacrylic acid, poly- ammonia can not only be retained
The low characteristic of ester resin thermal conductivity factor, moreover it is possible to retain the excellent mechanical property of polyacrylic acid, meanwhile, make polyurethane using catalyst
Resin is crosslinked in occurring, and forms staggered connecting key, and structure is more stablized, and insulation material is had good heat insulation property
Energy, resistance to elevated temperatures and decay resistance；
2) present invention as foaming agent, makes formation in polyurethane resin trickle using to benzene sulfonyl hydrazide or unifor
Hole-closing structure, it is ensured that polyurethane resin has less shrinkage factor and larger tearing toughness；
3) preparation method is simple, reaction process condition is gentle, safety and environmental protection, because reaction temperature is moderate, it is to avoid to thing
Matter structural damage, makes material property more stablize, and reduce production cost, it is easy to carry out industrialized production.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.The present embodiment is premised on technical solution of the present invention
Implemented, given detailed implementation method and specific operating process, but protection scope of the present invention be not limited to it is following
Embodiment.
Embodiment 1：
A kind of insulation material for solar thermal collection system, the insulation material is by the component including following weight portion content
It is prepared from：
60 parts of polyurethane resin, 20 parts of polyacrylic acid, 2 parts of initiator, 20 parts of auxiliary agent, 1 part of catalyst, 2 parts of stabilization aid,
11 parts of 9 parts of foaming agent and filler.Polyurethane resin uses EU, polyacrylic acid to use polyhydroxy polycarboxylic acrylic acid, draw
Hair agent uses di-t-butyl peroxide, auxiliary agent to use normal heptane, catalyst to use tetrabutyl titanate, stabilization aid to use 2- ethyls
Lead acetate, foaming agent is used to benzene sulfonyl hydrazide, and filler uses nano silicon.
Its preparation process is as follows：
Step 1, polyurethane resin and initiator are added into reactor, and polypropylene is slowly added dropwise under stirring
Acid, heating sealing reaction 3h, the drop rate of polyacrylic acid is 5g/min, and stir speed (S.S.) is 700r/min, and reaction temperature is 80
DEG C, reaction pressure is the 110% of atmospheric pressure；
Step 2, catalyst and auxiliary agent are added into reactor, carry out banburying reaction 2h, and reaction temperature is 90 DEG C, stirring
Speed is 1000r/min；
Step 3, by foaming agent addition reactor, carries out low-temp reaction 1h under agitation, and reaction temperature is 30 DEG C, stirring
Speed is 500r/min；
Step 4, filler and stabilization aid are added into reactor, sealing stirring 1h, stand 8h, you can obtain for too
The insulation material of positive energy collecting system, wherein, sealing stirring uses stirring at normal temperature, and stir speed (S.S.) is 300r/min.
Embodiment 2：
A kind of insulation material for solar thermal collection system, the insulation material is by the component including following weight portion content
It is prepared from：
75 parts of polyurethane resin, 30 parts of polyacrylic acid, 4 parts of initiator, 30 parts of auxiliary agent, 3 parts of catalyst, 4 parts of stabilization aid,
19 parts of 15 parts of foaming agent and filler.Polyurethane resin uses polyolefin-type polyurethane, polyacrylic acid to use polyhydroxy polycarboxylic acrylic acid,
Initiator uses cumyl peroxide, auxiliary agent to use n-butanol, catalyst to use isopropyl titanate, stabilization aid to use acetyl
Acetone, foaming agent uses unifor, filler to use nano-calcium carbonate.
Its preparation process is as follows：
Step 1, polyurethane resin and initiator are added into reactor, and polypropylene is slowly added dropwise under stirring
Acid, heating sealing reaction 8h, the drop rate of polyacrylic acid is 8g/min, and stir speed (S.S.) is 1000r/min, and reaction temperature is
110 DEG C, reaction pressure is the 150% of atmospheric pressure；
Step 2, catalyst and auxiliary agent are added into reactor, carry out banburying reaction 4h, and reaction temperature is 105 DEG C, is stirred
Speed is mixed for 1500r/min；
Step 3, by foaming agent addition reactor, carries out low-temp reaction 2h under agitation, and reaction temperature is 40 DEG C, stirring
Speed is 800r/min；
Step 4, filler and stabilization aid are added into reactor, sealing stirring 2h, stand 10h, you can obtain for
The insulation material of solar thermal collection system, wherein, sealing stirring uses stirring at normal temperature, and stir speed (S.S.) is 500r/min.
Embodiment 3：
A kind of insulation material for solar thermal collection system, the insulation material is by the component including following weight portion content
It is prepared from：
65 parts of polyurethane resin, 25 parts of polyacrylic acid, 3 parts of initiator, 25 parts of auxiliary agent, 2 parts of catalyst, 3 parts of stabilization aid,
12 parts of foaming agent, 15 parts of filler.Polyurethane resin uses EU, polyacrylic acid to use polyhydroxy polycarboxylic acrylic acid, draw
Hair agent uses methyl ethyl ketone peroxide, auxiliary agent to use normal heptane, catalyst to use tetraethyl titanate, stabilization aid to use diphenyl sulphur
Urea, foaming agent is used to benzene sulfonyl hydrazide, and filler uses nano silicon.
Its preparation process is as follows：
Step 1, polyurethane resin and initiator are added into reactor, and polypropylene is slowly added dropwise under stirring
Acid, heating sealing reaction 6h, the drop rate of polyacrylic acid is 7g/min, and stir speed (S.S.) is 900r/min, and reaction temperature is 100
DEG C, reaction pressure is the 135% of atmospheric pressure；
Step 2, catalyst and auxiliary agent are added into reactor, carry out banburying reaction 3h, and reaction temperature is 97 DEG C, stirring
Speed is 1400r/min；
Step 3, by foaming agent addition reactor, carries out low-temp reaction 1h under agitation, and reaction temperature is 35 DEG C, stirring
Speed is 700r/min；
Step 4, filler and stabilization aid are added into reactor, sealing stirring 1h, stand 9h, you can obtain for too
The insulation material of positive energy collecting system, wherein, sealing stirring uses stirring at normal temperature, and stir speed (S.S.) is 400r/min.
Comparative example：
By polyurethane rigid foam material as a comparison case, prepared with embodiment 1-3 for solar thermal collection system
Insulation material carries out performance test together, as a result as shown in the table：
The insulation material tool for solar thermal collection system that embodiment 1-3 is prepared is can be seen that by upper table data
There is less thermal conductivity factor, thus thermal and insulating performance is good；Flame retardant rating has reached B1 grades, with good fire-retardant and high temperature resistant
Performance；Density is larger, and compression strength is high, and structure more consolidation, durability is good.
Embodiment 4：
A kind of insulation material for solar thermal collection system, the insulation material is by the component including following weight portion content
It is prepared from：60 parts of polyurethane resin, 30 parts of polyacrylic acid, 2 parts of initiator, 30 parts of auxiliary agent, 1 part of catalyst, stabilization aid 4
19 parts of part, 9 parts of foaming agent and filler.
Wherein, polyurethane resin is EU resin；Polyacrylic acid is polyhydroxy polycarboxylic acrylic acid；Initiator was
Oxidation di-t-butyl；Auxiliary agent includes normal heptane and n-butanol；Catalyst is tetrabutyl titanate；Stabilization aid is 2- ethyl acetic acids
Lead；Foaming agent is to benzene sulfonyl hydrazide；Filler is nano-calcium carbonate.
A kind of preparation method of insulation material for solar thermal collection system, the method specifically includes following steps：
(1) after polyurethane resin is mixed with initiator, under the stir speed (S.S.) of 700r/min, dripped with the speed of 5g/min
Addition polymerization acrylic acid, carries out sealing reaction 5h at 90 DEG C afterwards, and it is the 130% of atmospheric pressure to seal the pressure of reaction；
(2) catalyst and auxiliary agent are separately added into, and banburying reaction 4h is carried out under 90 DEG C, the stir speed (S.S.) of 1000r/min；
(3) foaming agent is added, and 1.5h is reacted under 35 DEG C, the stir speed (S.S.) of 600r/min；
(4) filler and stabilization aid are separately added into, normal temperature sealing stirring 2h, stands 10h afterwards under 300r/min, obtains final product
To the insulation material for solar thermal collection system.
Embodiment 5：
A kind of insulation material for solar thermal collection system, the insulation material is by the component including following weight portion content
It is prepared from：75 parts of polyurethane resin, 20 parts of polyacrylic acid, 4 parts of initiator, 20 parts of auxiliary agent, 3 parts of catalyst, stabilization aid 2
11 parts of part, 15 parts of foaming agent and filler.
Wherein, polyurethane resin is polyolefin-type polyurethane resin；Polyacrylic acid is polyhydroxy polycarboxylic acrylic acid；Initiator is
Methyl ethyl ketone peroxide；Auxiliary agent is normal heptane；Catalyst is tetraethyl titanate；Stabilization aid is acetylacetone,2,4-pentanedione；Foaming agent is to toluene
Sulfohydrazide；Filler includes nano silicon and nano-calcium carbonate.
A kind of preparation method of insulation material for solar thermal collection system, the method specifically includes following steps：
(1) after polyurethane resin is mixed with initiator, under the stir speed (S.S.) of 1000r/min, with the speed of 8g/min
Polyacrylic acid is added dropwise, sealing reaction 3h is carried out at 110 DEG C afterwards, it is the 150% of atmospheric pressure to seal the pressure of reaction；
(2) catalyst and auxiliary agent are separately added into, and banburying reaction is carried out under 105 DEG C, the stir speed (S.S.) of 1500r/min
2h；
(3) foaming agent is added, and 1h is reacted under 40 DEG C, the stir speed (S.S.) of 800r/min；
(4) filler and stabilization aid are separately added into, normal temperature sealing stirring 1h, stands 8h afterwards under 500r/min, obtains final product
To the insulation material for solar thermal collection system.
Embodiment 6：
A kind of insulation material for solar thermal collection system, the insulation material is by the component including following weight portion content
It is prepared from：68 parts of polyurethane resin, 25 parts of polyacrylic acid, 3 parts of initiator, 25 parts of auxiliary agent, 2 parts of catalyst, stabilization aid 3
17 parts of part, 12 parts of foaming agent and filler.
Wherein, polyurethane resin includes EU resin and polyolefin-type polyurethane resin；Polyacrylic acid is many
Hydroxyl polyacrylic acid；Initiator includes di-t-butyl peroxide and cumyl peroxide；Auxiliary agent is n-butanol；Catalyst includes
Tetrabutyl titanate and isopropyl titanate；Stabilization aid includes rhenocure CA and 2-phenylindone；Foaming agent is to benzene sulfonyl hydrazide
And unifor；Filler is nano silicon.
A kind of preparation method of insulation material for solar thermal collection system, the method specifically includes following steps：
(1) after polyurethane resin is mixed with initiator, under the stir speed (S.S.) of 800r/min, dripped with the speed of 6g/min
Addition polymerization acrylic acid, carries out sealing reaction 8h at 80 DEG C afterwards, and it is the 110% of atmospheric pressure to seal the pressure of reaction；
(2) catalyst and auxiliary agent are separately added into, and banburying reaction 3h is carried out under 97 DEG C, the stir speed (S.S.) of 1200r/min；
(3) foaming agent is added, and 2h is reacted under 30 DEG C, the stir speed (S.S.) of 500r/min；
(4) filler and stabilization aid are separately added into, normal temperature sealing stirring 1.5h, stands 9h, i.e., afterwards under 400r/min
Obtain the insulation material for solar thermal collection system.
The above-mentioned description to embodiment is to be understood that and use invention for ease of those skilled in the art.
Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel announcement of the invention, does not depart from improvement that scope made and modification all should be of the invention
Within protection domain.
Claims (10)
1. a kind of insulation material for solar thermal collection system, it is characterised in that the insulation material is by including following weight portion
The component of content is prepared from：Polyurethane resin 60-75 parts, polyacrylic acid 20-30 parts, initiator 2-4 parts, auxiliary agent 20-30 parts,
Catalyst 1-3 parts, stabilization aid 2-4 parts, foaming agent 9-15 parts and filler 11-19 parts, described foaming agent is included to benzene sulfonyl
One or two in hydrazine or unifor.
2. a kind of insulation material for solar thermal collection system according to claim 1, it is characterised in that described is poly-
Urethane resin includes one or two in EU resin or polyolefin-type polyurethane resin.
3. a kind of insulation material for solar thermal collection system according to claim 1, it is characterised in that described is poly-
Acrylic acid is polyhydroxy polycarboxylic acrylic acid.
4. a kind of insulation material for solar thermal collection system according to claim 1, it is characterised in that described draws
Hair agent includes one or more in di-t-butyl peroxide, cumyl peroxide or methyl ethyl ketone peroxide.
5. a kind of insulation material for solar thermal collection system according to claim 1, it is characterised in that described helps
Agent includes one or two in normal heptane or n-butanol.
6. a kind of insulation material for solar thermal collection system according to claim 1, it is characterised in that described urges
Agent includes one or more in tetrabutyl titanate, isopropyl titanate or tetraethyl titanate.
7. a kind of insulation material for solar thermal collection system according to claim 1, it is characterised in that described is steady
Determining auxiliary agent includes one or more in 2- ethyl acetic acids lead, acetylacetone,2,4-pentanedione, rhenocure CA or 2-phenylindone.
8. a kind of insulation material for solar thermal collection system according to claim 1, it is characterised in that described fills out
Material includes one or two in nano silicon or nano-calcium carbonate.
9. the preparation method of a kind of insulation material for solar thermal collection system as described in any one of claim 1 to 8, its
It is characterised by, the method specifically includes following steps：
(1) after polyurethane resin is mixed with initiator, polyacrylic acid is added dropwise under stirring, enters at 80-110 DEG C afterwards
Row sealing reaction 3-8h；
(2) catalyst and auxiliary agent are separately added into, and banburying reaction 2-4h is carried out at 90-105 DEG C；
(3) foaming agent is added, and 1-2h is reacted at 30-40 DEG C；
(4) it is separately added into filler and stabilization aid, is stood after stirring 1-2h, that is, obtains described for solar thermal collection system
Insulation material.
10. a kind of preparation method of insulation material for solar thermal collection system according to claim 9, its feature exists
In,
In step (1), stir speed (S.S.) is 700-1000r/min, and the drop rate of described polyacrylic acid is 5-8g/min, described
Sealing reaction pressure for atmospheric pressure 110-150%；
In step (2), described banburying reaction is carried out under stirring, and stir speed (S.S.) is 1000-1500r/min；
In step (3), described reaction is carried out under stirring, and stir speed (S.S.) is 500-800r/min；
In step (4), described stirring is stirred for normal temperature is sealed, and stir speed (S.S.) is 300-500r/min, and 8- is stood after stirring
10h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611151286.9A CN106751723A (en) | 2016-12-14 | 2016-12-14 | A kind of insulation material for solar thermal collection system and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611151286.9A CN106751723A (en) | 2016-12-14 | 2016-12-14 | A kind of insulation material for solar thermal collection system and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110396291A (en) * | 2019-08-25 | 2019-11-01 | 湖南七纬科技有限公司 | A kind of thermal insulation material and preparation method thereof applied to Cold Chain Logistics |
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