CN101906283A - Internal plasticization type mono-component polyurethane seal gum - Google Patents
Internal plasticization type mono-component polyurethane seal gum Download PDFInfo
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- CN101906283A CN101906283A CN 201010268065 CN201010268065A CN101906283A CN 101906283 A CN101906283 A CN 101906283A CN 201010268065 CN201010268065 CN 201010268065 CN 201010268065 A CN201010268065 A CN 201010268065A CN 101906283 A CN101906283 A CN 101906283A
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- seal gum
- component polyurethane
- polyurethane seal
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Abstract
The invention relates to a polyurethane seal gum for building sealing or automobile sealing, in particular to an internal plasticization type mono-component polyurethane seal gum. The internal plasticization type mono-component polyurethane seal gum consists of the following raw materials in percentage by weight: 10 to 40 percent of internal plasticizer, 20 to 40 percent of polyurethane prepolymer, 0 to 25 percent of reinforcing filler, 10 to 35 percent of filler, 0 to 8 percent of titanium pigment, 0 to 1 percent of silane coupling agent, and 0.1 to 0.3 percent of dibutyltin dilaurate, wherein the internal plasticizer is a branched internal plasticizer with active NCO and is prepared from dewatered monohydroxy polyether or monoamino polyether and tri-functional group isocyanate according to a volume ratio of 1:3-4 of active H/NCO substances through reaction under the condition that the temperature is between 50 and 90 DEG C; and the polyurethane prepolymer is prepared by synthesizing polyether polyol and a curing agent. The internal plasticization type mono-component polyurethane seal gum has high soap water extraction resistance, and simultaneously can keep high elasticity for a long time.
Description
Technical field
The present invention relates to a kind of polyurethane sealant of building sealing or automobile sealed usefulness, be specifically related to a kind of internal plasticization type mono-component polyurethane seal gum.
Background technology
In the prior art, all contain outer addition type softening agent usually in the raw material of preparation polyurethane sealant.Yet because outer addition type migration of plasticizer, the water of anti-soap extraction performance of polyurethane sealant is relatively poor.In use, cause polyurethane sealant stream Heisui River or stream oil condition to occur because of the water of anti-soap extraction performance of polyurethane sealant is relatively poor, influence the outward appearance of product; Simultaneously, because outer addition type migration of plasticizer and loss cause seal gum hardness to increase, elongation reduces, and influences the elastic recovery rate and the sealing effectiveness of product.
At present, the product on the market generally reaches the purpose of slowing down outer addition type plasticizer migration by the consistency that improves outer addition type softening agent and urethane resin.But this method can not overcome outer addition type softening agent because thermal motion migrates to the problem on surface at all, especially under the solvent environment condition, can not overcome the problems referred to above more.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of internal plasticization type mono-component polyurethane seal gum with the good water of anti-soap extraction performance is provided, this internal plasticization type mono-component polyurethane seal gum can keep good elasticity for a long time, and reaches good sealing effectiveness.
The objective of the invention is to realize by following scheme: a kind of internal plasticization type mono-component polyurethane seal gum, form by following raw materials by weight percent:
Internal plasticizer 10-40%
Base polyurethane prepolymer for use as 20-40%
Reinforcement filler 0-25%
Filler 10-35%
Titanium dioxide 0-8%
Silane coupling agent 0-1%
Dibutyl tin laurate 0.1-0.3%;
Described internal plasticizer is to be 1 with the trifunctional isocyanate by active H/NCO amount of substance ratio by monohydroxy polyethers that has dewatered or mono amino polyethers: 3-4, after temperature is to react 2-8 hour under the 50-90 ℃ of condition, the branched chain type internal plasticizer of the active NCO of the band that makes;
Described base polyurethane prepolymer for use as by polyether glycol and solidifying agent through being polymerized.
Described internal plasticizer is to be made by the monohydroxy polyethers that has dewatered and trifunctional isocyanate's reaction, and the weight-average molecular weight of described monohydroxy polyethers is 1000-5000.
Described internal plasticizer is to be made by the mono amino polyethers that has dewatered and trifunctional isocyanate's reaction, and the weight-average molecular weight of described mono amino polyethers is 1000-5000.
Described trifunctional isocyanate is one or more in TDI tripolymer, TDI-TMP affixture, HDI tripolymer, HDI biuret, IPDI tripolymer, triphenylmethane triisocyanate and the 4-phenyl isocyanate.
Described polyether glycol is 1 with the amount of substance ratio of described solidifying agent: 1.5-3.
The hydroxyl value of described polyether glycol is 20-60.
Described polyether glycol is the trihydroxy-polyether glycol, and the weight-average molecular weight of this trihydroxy-polyether glycol is 1500-8000.
Described solidifying agent is a tolylene diisocyanate, diphenylmethanediisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, naphthalene diisocyanate, PPDI, two cyclohexyl methane diisocyanates, 1,4-cyclohexane vulcabond, xylylene diisocyanate, the cyclohexane dimethylene diisocyanate, trimethylammonium-1, the 6-hexamethylene diisocyanate, tetramethyl-mphenylenedimethylim-vulcabond, norbornene alkyl diisocyanate, in dimethyl diphenyl vulcabond and the methyl cyclohexyl vulcabond one or more.
Described reinforcement filler is carbon black and/or silicon-dioxide.
Described filler is talcum powder, lime carbonate or barium sulfate.
Internal plasticizer, base polyurethane prepolymer for use as, reinforcement filler, filler, titanium dioxide, silane coupling agent, dibutyl tin laurate by above-mentioned weight percentage high-speed mixing, are made internal plasticization type mono-component polyurethane seal gum.
The invention has the advantages that: internal plasticization type mono-component polyurethane seal gum of the present invention is in preparation process, branched chain type internal plasticizer with active NCO is grafted in the base polyurethane prepolymer for use as, wherein, internal plasticizer makes the intermolecular distance of polyurethane backbone increase, reduce the reactive force between polyurethane molecular, when having reached the plasticising purpose, significantly improved the water of anti-soap extracting performance of internal plasticization type mono-component polyurethane seal gum of the present invention, make the present invention can keep good elasticity for a long time, also make the present invention have good environmental compatibility simultaneously.Internal plasticization type mono-component polyurethane seal gum of the present invention can be used as building expansion joint and automobile black surround glass viscose glue.
Embodiment
Embodiment 1: the trifunctional isocyanate is the HDI tripolymer in the present embodiment, and solidifying agent is a diphenylmethanediisocyanate, and the reinforcement filler is an aerosil, and filler is a talcum powder.
With the molecular weight that has dewatered is that 1000 monohydroxy polyethers is added in the HDI tripolymer toluene solution, react under 80 ℃ of conditions to NCO content be initial content 2/3 after, make branched chain type internal plasticizer with active NCO.Add diphenylmethanediisocyanate in molecular weight is 8000 trihydroxy-polyether glycol, reaction is 5 hours under 80 ℃ of conditions, makes base polyurethane prepolymer for use as.Then, by following prescription high-speed mixing, make internal plasticization type mono-component polyurethane seal gum.This internal plasticization type mono-component polyurethane seal gum can be used for building field.
By weight percentage:
Internal plasticizer 40%
Base polyurethane prepolymer for use as 20%
Aerosil 3%
Talcum powder 28.9%
Titanium dioxide 8%
Dibutyl tin laurate 0.1%.
The tensile strength of gained one-component polyurethane sealant is 1.42Mpa, and elongation at break is that 750%, the 48 hour water of anti-soap extracting mass loss rate is 1%, has good anti-soap water-based energy.
Embodiment 2: the trifunctional isocyanate is the HDI tripolymer in the present embodiment, and solidifying agent is a diphenylmethanediisocyanate, and the reinforcement filler is an aerosil, and filler is a talcum powder.。
With the molecular weight that has dewatered is that 2000 monohydroxy polyethers is added in the HDI tripolymer toluene solution, react under 80 ℃ of conditions to NCO content be initial content 2/3 after, make branched chain type internal plasticizer with active NCO.Add diphenylmethanediisocyanate in molecular weight is 5000 trihydroxy-polyether glycol, reaction is 5 hours under 80 ℃ of conditions, makes base polyurethane prepolymer for use as.Then, by following prescription high-speed mixing, make internal plasticization type mono-component polyurethane seal gum.This internal plasticization type mono-component polyurethane seal gum can be used for building field.
By weight percentage:
Internal plasticizer 40%
Base polyurethane prepolymer for use as 20%
Aerosil 5%
Talcum powder 31.7%
Titanium dioxide 3%
Dibutyl tin laurate 0.3%.
The tensile strength of gained one-component polyurethane sealant is 1.42Mpa, and elongation at break is that 750%, the 48 hour water of anti-soap extracting mass loss rate is 1%, has good anti-soap water-based energy.
Embodiment 3: the trifunctional isocyanate is the HDI biuret in the present embodiment, and solidifying agent is a tolylene diisocyanate, and the reinforcement filler is a carbon black, and filler is a talcum powder, and silane coupling agent is KH-550.
With removing molecular weight water is that 5000 monohydroxy polyethers is added in the HDI biuret toluene solution, react under 85 ℃ of conditions be initial 2/3 to NCO content after, make branched chain type internal plasticizer with active NCO.Add tolylene diisocyanate in molecular weight is 1500 trihydroxy-polyether glycol, reaction is 5 hours under 80 ℃ of conditions, makes base polyurethane prepolymer for use as.Then, by following prescription high-speed mixing, make internal plasticization type mono-component polyurethane seal gum.This internal plasticization type mono-component polyurethane seal gum can be used for automotive field.
By weight percentage:
Internal plasticizer 10%
Base polyurethane prepolymer for use as 40%
Carbon black 18%
Talcum powder 31.2%
Silane coupling agent 0.6%
Dibutyl tin laurate 0.2%.
The tensile strength of gained one-component polyurethane sealant is 7.5Mpa, and elongation at break is 500%, 8 UVB ultra violet lamp after 168 hours, and through washing, washing fluid does not turn black.
Embodiment 4: the trifunctional isocyanate is the HDI biuret in the present embodiment, and solidifying agent is a diphenylmethanediisocyanate, and the reinforcement filler comprises carbon black and aerosil, and filler is a talcum powder, and silane coupling agent is KH-550.
With removing molecular weight water is that 5000 monohydroxy polyethers is added in the HDI biuret toluene solution, react under 85 ℃ of conditions be initial 2/3 to NCO content after, make branched chain type internal plasticizer with active NCO.Add diphenylmethanediisocyanate in molecular weight is 4000 trihydroxy-polyether glycol, reaction is 5 hours under 80 ℃ of conditions, makes base polyurethane prepolymer for use as.Then, by following prescription high-speed mixing, make internal plasticization type mono-component polyurethane seal gum.This internal plasticization type mono-component polyurethane seal gum can be used for automotive field.
By weight percentage:
Internal plasticizer 25%
Base polyurethane prepolymer for use as 25%
Carbon black 18%
Aerosil 3%
Talcum powder 28.2%
Silane coupling agent 0.6%
Dibutyl tin laurate 0.2%.
The tensile strength of gained one-component polyurethane sealant is 6.8Mpa, and elongation at break is 500%, 8 UVB ultra violet lamp after 168 hours, and through washing, washing fluid does not turn black.
In the present invention, the polyether glycol of preparation base polyurethane prepolymer for use as is 1 with the amount of substance ratio of solidifying agent: 1.5-3.Wherein, solidifying agent can be tolylene diisocyanate, diphenylmethanediisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, naphthalene diisocyanate, PPDI, two cyclohexyl methane diisocyanates, 1,4-cyclohexane vulcabond, xylylene diisocyanate, the cyclohexane dimethylene diisocyanate, trimethylammonium-1, the 6-hexamethylene diisocyanate, tetramethyl-mphenylenedimethylim-vulcabond, norbornene alkyl diisocyanate, in dimethyl diphenyl vulcabond and the methyl cyclohexyl vulcabond one or more.In addition, in preparation process of the present invention, can not add the reinforcement filler.
Should be noted that at last; above content is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; although this embodiment part has been done to explain to the present invention; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the essence and the scope of technical solution of the present invention.
Claims (10)
1. internal plasticization type mono-component polyurethane seal gum is characterized in that: be made up of following raw materials by weight percent:
Internal plasticizer 10-40%
Base polyurethane prepolymer for use as 20-40%
Reinforcement filler 0-25%
Filler 10-35%
Titanium dioxide 0-8%
Silane coupling agent 0-1%
Dibutyl tin laurate 0.1-0.3%;
Described internal plasticizer is to be 1 with the trifunctional isocyanate by active H/NCO amount of substance ratio by monohydroxy polyethers that has dewatered or mono amino polyethers: 3-4, after temperature is to react 2-8 hour under the 50-90 ℃ of condition, the branched chain type internal plasticizer of the active NCO of the band that makes;
Described base polyurethane prepolymer for use as by polyether glycol and solidifying agent through being polymerized.
2. according to the described internal plasticization type mono-component polyurethane seal gum of claim 1, it is characterized in that: described internal plasticizer is to be made by the monohydroxy polyethers that has dewatered and trifunctional isocyanate's reaction, and the weight-average molecular weight of described monohydroxy polyethers is 1000-5000.
3. according to the described internal plasticization type mono-component polyurethane seal gum of claim 1, it is characterized in that: described internal plasticizer is to be made by the mono amino polyethers that has dewatered and trifunctional isocyanate's reaction, and the weight-average molecular weight of described mono amino polyethers is 1000-5000.
4. according to the described internal plasticization type mono-component polyurethane seal gum of claim 1, it is characterized in that: described trifunctional isocyanate is one or more in TDI tripolymer, TDI-TMP affixture, HDI tripolymer, HDI biuret, IPDI tripolymer, triphenylmethane triisocyanate and the 4-phenyl isocyanate.
5. according to the described internal plasticization type mono-component polyurethane seal gum of claim 1, it is characterized in that: described polyether glycol is 1 with the amount of substance ratio of described solidifying agent: 1.5-3.
6. according to the described internal plasticization type mono-component polyurethane seal gum of claim 5, it is characterized in that: the hydroxyl value of described polyether glycol is 20-60.
7. according to the described internal plasticization type mono-component polyurethane seal gum of claim 6, it is characterized in that: described polyether glycol is the trihydroxy-polyether glycol, and the weight-average molecular weight of this trihydroxy-polyether glycol is 1500-8000.
8. according to the described internal plasticization type mono-component polyurethane seal gum of claim 1, it is characterized in that: described solidifying agent is a tolylene diisocyanate, diphenylmethanediisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, naphthalene diisocyanate, PPDI, two cyclohexyl methane diisocyanates, 1,4-cyclohexane vulcabond, xylylene diisocyanate, the cyclohexane dimethylene diisocyanate, trimethylammonium-1, the 6-hexamethylene diisocyanate, tetramethyl-mphenylenedimethylim-vulcabond, norbornene alkyl diisocyanate, in dimethyl diphenyl vulcabond and the methyl cyclohexyl vulcabond one or more.
9. according to the described internal plasticization type mono-component polyurethane seal gum of claim 1, it is characterized in that: described reinforcement filler is carbon black and/or silicon-dioxide.
10. according to the described internal plasticization type mono-component polyurethane seal gum of claim 1, it is characterized in that: described filler is talcum powder, lime carbonate or barium sulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102680656A CN101906283B (en) | 2010-08-31 | 2010-08-31 | Internal plasticization type mono-component polyurethane seal gum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102680656A CN101906283B (en) | 2010-08-31 | 2010-08-31 | Internal plasticization type mono-component polyurethane seal gum |
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| CN101906283A true CN101906283A (en) | 2010-12-08 |
| CN101906283B CN101906283B (en) | 2012-09-26 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504750A (en) * | 2011-11-22 | 2012-06-20 | 东莞市普赛达密封粘胶有限公司 | Polyurethane sealant with good initial adhesion |
| CN105504217A (en) * | 2015-12-31 | 2016-04-20 | 天津微瑞超分子材料科技有限公司 | Self-plasticization modified macromolecular rotational moulding material and preparation thereof |
| CN105601882A (en) * | 2015-12-31 | 2016-05-25 | 天津微瑞超分子材料科技有限公司 | Synthesis method of self-plasticized modified polycaprolactone |
| CN105865011A (en) * | 2016-04-11 | 2016-08-17 | 江阴市人人达科技有限公司 | Air conditioner damping and noise reducing base and production method thereof |
| CN108117667A (en) * | 2017-12-28 | 2018-06-05 | 中国科学院长春应用化学研究所 | A kind of plasticizer, its preparation method and its application in polylactic acid |
| CN110041489A (en) * | 2019-04-22 | 2019-07-23 | 广东普赛达密封粘胶有限公司 | A kind of polyurethane sealant resistance to migration plasticizer and a kind of polyurethane building sealant |
| CN111303404A (en) * | 2020-03-30 | 2020-06-19 | 北京东方雨虹防水技术股份有限公司 | Internal plasticization type polyether, preparation method thereof, single-component polyurethane waterproof coating and rolling composite construction structure |
| CN112940667A (en) * | 2021-02-26 | 2021-06-11 | 广东普赛达密封粘胶有限公司 | Polyurethane sealant and preparation method thereof |
| CN113004849A (en) * | 2021-03-02 | 2021-06-22 | 广东普赛达密封粘胶有限公司 | Silane modified sealant for bonding coiled materials and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102504750A (en) * | 2011-11-22 | 2012-06-20 | 东莞市普赛达密封粘胶有限公司 | Polyurethane sealant with good initial adhesion |
| CN102504750B (en) * | 2011-11-22 | 2013-11-20 | 东莞市普赛达密封粘胶有限公司 | Polyurethane sealant with good initial adhesion |
| CN105601882B (en) * | 2015-12-31 | 2019-02-15 | 天津微瑞超分子材料科技有限公司 | A kind of synthetic method of the modification polycaprolactone of self-plasticization |
| CN105601882A (en) * | 2015-12-31 | 2016-05-25 | 天津微瑞超分子材料科技有限公司 | Synthesis method of self-plasticized modified polycaprolactone |
| CN105504217A (en) * | 2015-12-31 | 2016-04-20 | 天津微瑞超分子材料科技有限公司 | Self-plasticization modified macromolecular rotational moulding material and preparation thereof |
| CN105504217B (en) * | 2015-12-31 | 2019-02-15 | 天津微瑞超分子材料科技有限公司 | A kind of self-plasticization type modified high-molecular rotational moulding material and its preparation |
| CN105865011A (en) * | 2016-04-11 | 2016-08-17 | 江阴市人人达科技有限公司 | Air conditioner damping and noise reducing base and production method thereof |
| CN108117667A (en) * | 2017-12-28 | 2018-06-05 | 中国科学院长春应用化学研究所 | A kind of plasticizer, its preparation method and its application in polylactic acid |
| CN110041489A (en) * | 2019-04-22 | 2019-07-23 | 广东普赛达密封粘胶有限公司 | A kind of polyurethane sealant resistance to migration plasticizer and a kind of polyurethane building sealant |
| CN111303404A (en) * | 2020-03-30 | 2020-06-19 | 北京东方雨虹防水技术股份有限公司 | Internal plasticization type polyether, preparation method thereof, single-component polyurethane waterproof coating and rolling composite construction structure |
| CN112940667A (en) * | 2021-02-26 | 2021-06-11 | 广东普赛达密封粘胶有限公司 | Polyurethane sealant and preparation method thereof |
| CN112940667B (en) * | 2021-02-26 | 2022-06-07 | 广东普赛达密封粘胶有限公司 | Polyurethane sealant and preparation method thereof |
| CN113004849A (en) * | 2021-03-02 | 2021-06-22 | 广东普赛达密封粘胶有限公司 | Silane modified sealant for bonding coiled materials and preparation method thereof |
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| CN101906283B (en) | 2012-09-26 |
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Address after: 523000 Guangdong city of Dongguan province Guangdong Town Village nine Pu Saida sealing adhesive Co. Ltd Patentee after: GUANGDONG PUSTAR SEALING ADHESIVE CO., LTD. Address before: 523000 Guangdong city of Dongguan Province town third Jinlong Industrial Zone Dongguan pustar sealing adhesive Co. Ltd Patentee before: Dongguan Pustar Adhesives & Sealants Co., Ltd. |