CN113736418A - Modified single-component polyurethane foam joint mixture and preparation method thereof - Google Patents
Modified single-component polyurethane foam joint mixture and preparation method thereof Download PDFInfo
- Publication number
- CN113736418A CN113736418A CN202111096819.9A CN202111096819A CN113736418A CN 113736418 A CN113736418 A CN 113736418A CN 202111096819 A CN202111096819 A CN 202111096819A CN 113736418 A CN113736418 A CN 113736418A
- Authority
- CN
- China
- Prior art keywords
- polyurethane foam
- component polyurethane
- modified
- antioxidant
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920005830 Polyurethane Foam Polymers 0.000 title claims abstract description 40
- 239000011496 polyurethane foam Substances 0.000 title claims abstract description 40
- 239000000203 mixture Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229920001558 organosilicon polymer Polymers 0.000 claims abstract description 16
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 13
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 229920000570 polyether Polymers 0.000 claims abstract description 13
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims abstract description 12
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 229920005862 polyol Polymers 0.000 claims abstract description 9
- 150000003077 polyols Chemical class 0.000 claims abstract description 9
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 8
- 230000002745 absorbent Effects 0.000 claims abstract description 7
- 239000002250 absorbent Substances 0.000 claims abstract description 7
- 239000001273 butane Substances 0.000 claims abstract description 6
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims abstract description 6
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000012188 paraffin wax Substances 0.000 claims abstract description 6
- 239000001294 propane Substances 0.000 claims abstract description 6
- 229920002545 silicone oil Polymers 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 16
- -1 polydimethylsiloxane Polymers 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- ZMSQJSMSLXVTKN-UHFFFAOYSA-N 4-[2-(2-morpholin-4-ylethoxy)ethyl]morpholine Chemical group C1COCCN1CCOCCN1CCOCC1 ZMSQJSMSLXVTKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000000443 aerosol Substances 0.000 claims description 6
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 5
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 5
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 4
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 claims description 4
- QSRJVOOOWGXUDY-UHFFFAOYSA-N 2-[2-[2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]ethoxy]ethoxy]ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCCOCCOCCOC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 QSRJVOOOWGXUDY-UHFFFAOYSA-N 0.000 claims description 3
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 claims description 2
- TVJPBVNWVPUZBM-UHFFFAOYSA-N [diacetyloxy(methyl)silyl] acetate Chemical compound CC(=O)O[Si](C)(OC(C)=O)OC(C)=O TVJPBVNWVPUZBM-UHFFFAOYSA-N 0.000 claims description 2
- CZBZUDVBLSSABA-UHFFFAOYSA-N butylated hydroxyanisole Chemical compound COC1=CC=C(O)C(C(C)(C)C)=C1.COC1=CC=C(O)C=C1C(C)(C)C CZBZUDVBLSSABA-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 229930003836 cresol Natural products 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 2
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 2
- 238000004383 yellowing Methods 0.000 abstract description 11
- 239000006260 foam Substances 0.000 abstract description 8
- 230000003111 delayed effect Effects 0.000 abstract description 6
- 229910018557 Si O Inorganic materials 0.000 description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 229910000077 silane Inorganic materials 0.000 description 4
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 230000036632 reaction speed Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000006750 UV protection Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 150000004982 aromatic amines Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- ARGICNMLPHJXTP-UHFFFAOYSA-N [SiH4].C(=C)C(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O Chemical compound [SiH4].C(=C)C(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O ARGICNMLPHJXTP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 150000002923 oximes Chemical class 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
-
- 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
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/161—Catalysts containing two or more components to be covered by at least two of the groups C08G18/166, C08G18/18 or C08G18/22
- C08G18/163—Catalysts containing two or more components to be covered by at least two of the groups C08G18/166, C08G18/18 or C08G18/22 covered by C08G18/18 and C08G18/22
- C08G18/165—Catalysts containing two or more components to be covered by at least two of the groups C08G18/166, C08G18/18 or C08G18/22 covered by C08G18/18 and C08G18/22 covered by C08G18/18 and C08G18/24
-
- 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
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
- C08G18/20—Heterocyclic amines; Salts thereof
- C08G18/2081—Heterocyclic amines; Salts thereof containing at least two non-condensed heterocyclic rings
-
- 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
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/24—Catalysts containing metal compounds of tin
- C08G18/244—Catalysts containing metal compounds of tin tin salts of carboxylic acids
- C08G18/246—Catalysts containing metal compounds of tin tin salts of carboxylic acids containing also tin-carbon bonds
-
- 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
-
- 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
- C08G18/61—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a modified single-component polyurethane foam joint mixture and a preparation method thereof. The modified single-component polyurethane foam joint mixture is prepared from the following raw materials in percentage by weight: 5-18% of polyether polyol, 10-25% of organic silicon polymer, 0.4-0.8% of main catalyst, 0.05-0.15% of auxiliary catalyst, 0.5-2% of cross-linking agent, 0.005-0.02% of antioxidant, 0.05-0.25% of ultraviolet absorbent, 1-2% of silicone oil 8871, 30-40% of chlorinated paraffin, 10-18% of polymeric MDI, 8-15% of dimethyl ether and 4-15% of propane and butane. According to the invention, by adding the organic silicon polymer and adding the antioxidant and the ultraviolet absorbent, the yellowing of foam generated by the single-component polyurethane foam joint mixture can be effectively prevented and delayed, and the temperature resistance of the foam can be improved.
Description
Technical Field
The invention relates to the technical field of building sealing and decoration, in particular to a modified single-component polyurethane foam joint mixture and a preparation method thereof.
Background
The single-component polyurethane foam joint mixture is a foam product of polyurethane applied in an aerosol technology. The adhesive is simple to operate and convenient to use, has excellent characteristics of adhesion, heat insulation and the like, and can be quickly and widely applied to the fields of building sealing, decoration and fitment and the like.
In the current market, polyether polyol and polymeric MDI are used as main raw materials of single-component polyurethane foam gap filler products, and because a benzene ring is directly connected with an isocyanate group, a large pi bond on the benzene ring is conjugated with adjacent NCO. Under the action of light, heat and oxygen, especially ultraviolet ray, the ammonia ester bond is decomposed to generate arylamine. After benzene nucleus on arylamine is oxidized and rearranged, chromophoric groups such as quinoid structure and the like are generated, so that the polyurethane foam is easy to yellow and cannot be exposed in the air for a long time. Meanwhile, the heat-resistant temperature of the polyurethane foam is in the range of-20 to 120 ℃, and the polyurethane foam is easy to deform and shrink due to overhigh temperature; too low a temperature results in a brittle foam with poor flexibility.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide a modified single-component polyurethane foam gap filler and a preparation method thereof. According to the invention, by adding the organic silicon polymer and adding the antioxidant and the ultraviolet absorbent, the yellowing of foam generated by the single-component polyurethane foam joint mixture can be effectively prevented and delayed, and the temperature resistance of the foam can be improved.
The technical scheme adopted by the invention is as follows: the modified single-component polyurethane foam gap filler is prepared from the following raw materials in percentage by weight:
further, the modified single-component polyurethane foam gap filler is characterized in that the organic silicon polymer is one or two of alpha, omega-dihydroxy polydimethylsiloxane and hydroxyl-terminated polyether modified polysiloxane.
Further, the main catalyst of the modified single-component polyurethane foam joint mixture is dimorpholinodiethyl ether (DMDEE).
Further, the auxiliary catalyst is selected from dibutyltin dilaurate or stannous octoate.
Further, the modified one-component polyurethane foam caulking agent is prepared by using a cross-linking agent selected from methyl trimethoxy silane, methyl trioximino silane, methyl triacetoxy silane or vinyl tributyrinoxime silane.
Further, the antioxidant is one or two selected from dibutyl cresol, tert-butyl p-hydroxyanisole, antioxidant 245, antioxidant 30N, sodium thiosulfate and triphenyl phosphite.
Further, the modified single-component polyurethane foam gap filler is characterized in that the ultraviolet absorber is one or two selected from UV-1, UV-196, UV NP3 and Pub-380.
A preparation method of a modified single-component polyurethane foam joint mixture comprises the following steps:
1) preparing materials according to the proportion;
2) sequentially adding polyether polyol, an organic silicon polymer, a main catalyst, an auxiliary catalyst, a cross-linking agent, an antioxidant, an ultraviolet absorbent, silicone oil 8871 and chlorinated paraffin into a mixer, and mixing and stirring for 1-2 hours to obtain a mixture;
3) putting the mixture obtained in the step 2) into an aerosol can, then adding polymeric MDI, sealing, filling dimethyl ether and propane and butane by a filling machine, pressing a cover, shaking for 30-60 ℃, and standing for 48 hours at room temperature to obtain the product.
The invention has the beneficial effects that:
1. in the present invention, a silicone polymer is introduced as a raw material. The molecular chain of the organic silicon polymer mainly contains Si-O bonds, and the bond energy of the Si-O bonds is larger than the energy of ultraviolet rays, so that the single-component polyurethane foam gap filler added with the organic silicon polymer can keep good performance under the irradiation of the ultraviolet rays, and the aging and yellowing are effectively prevented or delayed. And because the temperature resistance range of the organic silicon polymer is-60-300 ℃, the single-component polyurethane foam gap filler introduces an organic silicon polymer structure, and the high temperature resistance and low temperature resistance of the foam are also improved. Meanwhile, a part of organic silicon polymer can form a net structure through an auxiliary catalyst and a cross-linking agent, and does not need to react with more polymeric MDI, so that the using amount of the polymeric MDI is reduced, and the conjugation quantity of large pi bonds on benzene rings and adjacent NCO is reduced. Namely, under the action of light, heat, oxygen, especially ultraviolet rays, the quantity of chromophoric groups such as quinoid structures and the like is reduced, so that the yellowing tendency of products is prevented and delayed.
2. In the invention, the auxiliary catalyst plays a role in improving the reaction speed of the organic silicon polymer, and dibutyltin dilaurate or stannous octoate is mainly selected. Because the reaction speed of the organic silicon polymer is lower than that of the polyether polyol, the addition of the auxiliary catalyst can effectively improve the reaction speed between the organic silicon polymer and the polyether polyol, better form a mixed chain segment and promote the generation of the intermediate prepolymer.
3. In the invention, the cross-linking agent mainly has the function of changing the chain molecules of the organic silicon polymer into a net cross-linking state, so that the curing process is accelerated, and the structure and the stability of cured foam are effectively improved, thereby improving the aging resistance and the yellowing resistance of the product.
4. In the invention, the antioxidant is added, so that peroxide free radicals can be captured or hydroperoxide can be decomposed, and yellowing of polyurethane can be effectively prevented or delayed.
5. In the invention, the ultraviolet absorbent is added, so that the ultraviolet can be effectively absorbed, and the polyurethane can be prevented from yellowing.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
The modified single-component polyurethane foam gap filler comprises the following components in parts by weight:
the preparation method is as follows
1) Weighing various raw materials according to the raw material proportion;
2) sequentially adding the weighed polyether polyol, alpha, omega-dihydroxy polydimethylsiloxane, DMDEE, dibutyltin dilaurate, methyl trioxime silane, antioxidant 245, UV-196, silicone oil 8871 and chlorinated paraffin into a 1L mixer with a stirring device, and mixing and stirring for 2 hours to obtain a mixture;
3) adding the mixture obtained in the step 2) into an aerosol can, then adding polymeric MDI, and sealing; and filling dimethyl ether and propane and butane into the mixture by using a special filling machine, pressing the cover, shaking the mixture for 60 hours, and standing the mixture for 48 hours at room temperature to obtain the modified single-component polyurethane foam gap filler, wherein the product performances are shown in Table 1.
Example 2
The modified single-component polyurethane foam gap filler comprises the following components in parts by weight:
the preparation method is as follows
1) Weighing various raw materials according to the raw material proportion;
2) sequentially adding the weighed polyether polyol, alpha, omega-dihydroxy polydimethylsiloxane, hydroxyl-terminated polyether modified polysiloxane, DMDEE, stannous octoate, vinyl tributyrine oxime silane, antioxidant 30N, UV NP3, silicone oil 8871 and chlorinated paraffin into a 1L mixer with a stirring device, and mixing and stirring for 2 hours to obtain a mixture;
3) adding the mixture obtained in the step 2) into an aerosol can, then adding polymeric MDI, and sealing; and filling dimethyl ether and propane and butane into the mixture by using a special filling machine, pressing the cover, shaking the mixture for 60 hours, and standing the mixture for 48 hours at room temperature to obtain the modified single-component polyurethane foam gap filler, wherein the product performances are shown in Table 1.
Example 3
The modified single-component polyurethane foam gap filler comprises the following components in parts by weight:
the preparation method is as follows
1) Weighing various raw materials according to the raw material proportion;
2) sequentially adding weighed polyether polyol, alpha, omega-dihydroxy polydimethylsiloxane, hydroxyl-terminated polyether modified polysiloxane, DMDEE, dibutyltin dilaurate, methyl trioximato silane, antioxidant 30N, UV NP3, Pub-380, silicone oil 8871 and chlorinated paraffin into a 1L mixer with a stirring device, and mixing and stirring for 2 hours to obtain a mixture;
3) adding the mixture obtained in the step 2) into an aerosol can, then adding polymeric MDI, and sealing; and filling dimethyl ether and propane and butane into the mixture by using a special filling machine, pressing the cover, shaking the mixture for 60 hours, and standing the mixture for 48 hours at room temperature to obtain the modified single-component polyurethane foam gap filler, wherein the product performances are shown in Table 1.
TABLE 1 data comparison of conventional one-component polyurethane foam caulk and the present invention
Note: higher Δ YI indicates more yellowing.
As can be seen from Table 1, the modified single-component polyurethane foam joint mixture prepared by the invention improves the ultraviolet resistance and yellowing resistance of products, and also improves the temperature resistance of polyurethane foam. According to the invention, by introducing the organic silicon polymer to increase Si-O bonds in polyurethane chain segments, the ultraviolet resistance is increased, the consumption of polymeric MDI is reduced, the generation of chromophoric groups is reduced, and the yellowing of the single-component polyurethane foam gap filler is prevented or delayed under the combined action of several anti-yellowing methods of adding a cross-linking agent to improve the chain segment network structure and adding an antioxidant and an ultraviolet absorbent. Meanwhile, due to the introduction of Si-O bonds into the molecular chain and the enlargement of the net structure, the high temperature resistance and low temperature resistance of the single-component polyurethane foam gap filler are also improved.
Claims (8)
1. The modified single-component polyurethane foam joint mixture is characterized by being prepared from the following raw materials in percentage by weight:
2. the modified one-component polyurethane foam underfill according to claim 1, wherein the silicone polymer is one or two selected from the group consisting of α, ω -dihydroxy polydimethylsiloxane and hydroxyl-terminated polyether modified polysiloxane.
3. The modified one-component polyurethane foam underfill according to claim 1, wherein the main catalyst is dimorpholinodiethyl ether.
4. The modified one-component polyurethane foam underfill according to claim 1, wherein the auxiliary catalyst is selected from dibutyltin dilaurate or stannous octoate.
5. The modified one-component polyurethane foam underfill of claim 1, wherein the cross-linking agent is selected from the group consisting of methyltrimethoxysilane, methyltriprooximosilane, methyltriacetoxysilane, and vinyltributketoximosilane.
6. The modified one-component polyurethane foam underfill as claimed in claim 1, wherein the antioxidant is one or two selected from the group consisting of dibutyl cresol, tert-butyl p-hydroxyanisole, antioxidant 245, antioxidant 30N, sodium thiosulfate and triphenyl phosphite.
7. The modified single-component polyurethane foam caulking agent according to claim 1, wherein the ultraviolet absorber is one or two selected from the group consisting of UV-1, UV-196, UV NP3 and Pub-380.
8. The preparation method of the modified single-component polyurethane foam gap filler as claimed in any one of claims 1 to 7, characterized by comprising the following steps:
1) preparing the material according to any one of claims 1 to 7;
2) sequentially adding polyether polyol, an organic silicon polymer, a main catalyst, an auxiliary catalyst, a cross-linking agent, an antioxidant, an ultraviolet absorbent, silicone oil 8871 and chlorinated paraffin into a mixer, and mixing and stirring for 1-2 hours to obtain a mixture;
3) putting the mixture obtained in the step 2) into an aerosol can, then adding polymeric MDI, sealing, filling dimethyl ether and propane and butane by a filling machine, pressing a cover, shaking for 30-60 ℃, and standing for 48 hours at room temperature to obtain the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111096819.9A CN113736418B (en) | 2021-09-18 | 2021-09-18 | Modified single-component polyurethane foam joint mixture and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111096819.9A CN113736418B (en) | 2021-09-18 | 2021-09-18 | Modified single-component polyurethane foam joint mixture and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113736418A true CN113736418A (en) | 2021-12-03 |
| CN113736418B CN113736418B (en) | 2023-12-29 |
Family
ID=78739784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111096819.9A Active CN113736418B (en) | 2021-09-18 | 2021-09-18 | Modified single-component polyurethane foam joint mixture and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113736418B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1616577A (en) * | 2004-09-21 | 2005-05-18 | 济南大学 | Organic silicon modified polyurethane gap-filling rubber for cement road |
| CN105969287A (en) * | 2016-05-31 | 2016-09-28 | 苏州市奎克力电子科技有限公司 | Transparent waterproof encapsulating material |
| CN106317854A (en) * | 2016-08-24 | 2017-01-11 | 广东三和化工科技有限公司 | Single-component polyurethane foam joint mixture and preparing method thereof |
| CN109628052A (en) * | 2018-11-01 | 2019-04-16 | 保定赞伯商贸有限公司 | A kind of polyurethane gap filler and preparation method thereof |
| CN110437420A (en) * | 2019-08-02 | 2019-11-12 | 汾阳市绿健塑胶材料制造有限公司 | A kind of modified polyurethane glue and preparation method thereof for plastic cement race track waterproof layer |
-
2021
- 2021-09-18 CN CN202111096819.9A patent/CN113736418B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1616577A (en) * | 2004-09-21 | 2005-05-18 | 济南大学 | Organic silicon modified polyurethane gap-filling rubber for cement road |
| CN105969287A (en) * | 2016-05-31 | 2016-09-28 | 苏州市奎克力电子科技有限公司 | Transparent waterproof encapsulating material |
| CN106317854A (en) * | 2016-08-24 | 2017-01-11 | 广东三和化工科技有限公司 | Single-component polyurethane foam joint mixture and preparing method thereof |
| CN109628052A (en) * | 2018-11-01 | 2019-04-16 | 保定赞伯商贸有限公司 | A kind of polyurethane gap filler and preparation method thereof |
| CN110437420A (en) * | 2019-08-02 | 2019-11-12 | 汾阳市绿健塑胶材料制造有限公司 | A kind of modified polyurethane glue and preparation method thereof for plastic cement race track waterproof layer |
Non-Patent Citations (1)
| Title |
|---|
| 曹云来: "《密封胶—技术、配方、应用》", 31 January 2001, 化学工业出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113736418B (en) | 2023-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103122146B (en) | Fireproof and irradiation-resisting room temperature vulcanization two-component silicone foam sealant used in nuclear power station and preparation process thereof | |
| CN102827340B (en) | Organosilicon-modified waterborne polyurethane composite material and applications thereof | |
| CN107602817A (en) | A kind of high cold-resistant polyurethane shock pad and preparation method thereof | |
| CN101173101B (en) | Single-component ketoxime removing type room temperature vulcanized silicone rubber composition | |
| CN109609083B (en) | Bi-component silicone structural adhesive for solar photo-thermal power generation and preparation method thereof | |
| CN101775219B (en) | Radiation-resistant addition type room temperature vulcanized liquid silicone rubber and preparation method thereof | |
| CN101851486A (en) | Two-component solar sealant and preparation method thereof | |
| CN112266481B (en) | Maleopimaric acid modified silicon-phosphorus synergistic flame retardant, preparation method thereof and flame-retardant polyurethane foam prepared from maleopimaric acid modified silicon-phosphorus synergistic flame retardant | |
| CN112592688B (en) | Polyurethane-epoxy double-component structural adhesive | |
| CN108276774B (en) | Organic silicon foaming composition and organic silicon porous foaming material prepared from same | |
| CN102093721A (en) | Single-component alcohol/ketoxime-removed room temperature vulcanizing silicone rubber and preparation method thereof | |
| CN107987782A (en) | A kind of preparation method of aspartate casting glue | |
| CN113736418A (en) | Modified single-component polyurethane foam joint mixture and preparation method thereof | |
| CN108865052B (en) | Single-component dealcoholized silicone structure sealant for building curtain wall and preparation method thereof | |
| CN112852103B (en) | Flexible epoxy composition for outdoor composite insulator | |
| CN113265222B (en) | Polymer moisture-proof fireproof plugging composite material and use method thereof | |
| CN108384022B (en) | Preparation of hyperbranched resin for improving high-temperature resistance of non-cured rubber asphalt | |
| KR101676272B1 (en) | Liquid silicone rubber composition having low viscosity and flame retardancy for application to high-voltage electrical insulators | |
| CN116554823B (en) | Waterproof polyurethane adhesive and preparation method thereof | |
| CN115746565B (en) | Room temperature vulcanized silicone rubber and preparation method and application thereof | |
| CN115785893A (en) | Low-dielectric organosilicon sealant and preparation method thereof | |
| CN112210341A (en) | Double-vulcanization system building sealant and preparation method thereof | |
| CN112852102B (en) | Preparation method of flexible epoxy composition for outdoor composite insulator | |
| CN110305368B (en) | Flame-retardant foaming agent and preparation method and application thereof | |
| CN113667101A (en) | Method for preparing polyester polyol from glycolide-epsilon-caprolactone copolymer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |