CN101805514B - Castor oil type polyurethane/acrylic resin double-component damping material and preparation method thereof - Google Patents
Castor oil type polyurethane/acrylic resin double-component damping material and preparation method thereof Download PDFInfo
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- CN101805514B CN101805514B CN2010101265088A CN201010126508A CN101805514B CN 101805514 B CN101805514 B CN 101805514B CN 2010101265088 A CN2010101265088 A CN 2010101265088A CN 201010126508 A CN201010126508 A CN 201010126508A CN 101805514 B CN101805514 B CN 101805514B
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Abstract
The invention relates to a castor oil type polyurethane/acrylic resin double-component damping material and a preparation method thereof. The double-component damping material comprises a component A and a component B, wherein the component A is a castor oil type polyurethane solution which is prepared from isocyanate polymers, castor oil and long-chain alcohol and has 40-60 percent of solid content, and the component B is one or two of hydroxyl acrylic resin and epoxy resin; when in use, the component A and the component B are mixed by the weight proportion of 1:(1-2) and subjected to curing for 10-30min under a curing condition of 180-220 DEG C. The castor oil type polyurethane/acrylic resin double-component damping material has a temperature range within -50-120 DEG C when tan delta is not less than 0.2, and T-peel strength and longitudinal shear strength can be respectively tested on the basis of GB/T 2790-1995 and GB-T7124-1986 after the damping material is bonded with an electro-galvanized sheet or a hot-dipped galvanized sheet. In the invention, the T-peel strength of the damping material is tested to be larger than 10N/cm and the longitudinal shear strength is tested to be larger than 5MPa by using a DXLL-10000 electronic tensile testing machine produced by Shanhai dejie machine equipment limited company.
Description
Technical field
The present invention relates to a kind of preparation method of damping material, particularly a kind of castor oil type polyurethane/acrylic resin double-component damping material and preparation method thereof.
Background technology
Damping material be a kind of can absorbed oscillation mechanical energy and it is converted into heat energy and the new function material that dissipates; It utilizes the multiplicity of the molecular motion of superpolymer; Between the molecular chain of polymkeric substance, can produce the relative movement, molecule segment also can produce relative slippage, reverse.Do the time spent when receiving repeated stress, external force is done work to high polymer system, is used for changing the conformation of molecule segment on the one hand, overcomes the intersegmental internal friction energy needed of chain when being used to provide sub-chain motion on the other hand.After repeated stress was removed, the molecular chain of stretching, extension was curled again, and high polymer system externally does work, but the sub-chain motion during the molecular chain retraction still need overcome the intersegmental friction resistance of chain.Like this, in primary stress strain circulation, some merit is depleted, and is converted into heat, and has the vibration and noise reducing effect.Owing to have excellent damping, be widely used in fields such as aerospace cause, communications and transportation, mechanical means, construction work and daily life.
A lot of polymers can use as damping material, and second-order transition temperature is different, and the use field is also different.Wherein, owing to urethane, acrylate resin can select different passing through to regulate second-order transition temperature, and the adjustable TR is wide, thereby gains great popularity.
If Yu Chang etc. have carried out the research of the urethane of PEMULEN TR2 modification Shandong Jinan resin processing plant, the result shows that the damping temperature domain of tackiness agent has been widened in the adding of Yodo Sol GH 28, reaches 50 ℃.People such as T.Trakulsujaritchok have studied damping capacity and the mechanical property with TMXDI, PPG, TMP synthetic urethane/polyethyl methacrylate polymer interpenetration network structure, show that appropriate proportioning can make material at 2～94 ℃ good damping capacity arranged.Lu has studied and has used the multipolymer of tolylene diisocyanate synthetic urethane and vinylbenzene and TEB 3K, NSC 20956 to synthesize the polymer as damping material with inierpeneirating network structure as matrix in the winter; The result shows; Through regulating urethane and gathering the mass ratio of (methyl methacrylate-butyl methacrylate); Can regulate damping temperature domain, dissipation factor can reach 90 ℃ greater than 0.3 temperature province.
Summary of the invention
One of the object of the invention is to provide a kind of castor oil type polyurethane/acrylic resin double-component damping material.
Two of the object of the invention is to provide the preparation method of this damping material.
For achieving the above object, the present invention adopts following technical scheme:
A kind of castor oil type polyurethane/acrylic resin double-component damping material; It is characterized in that component A is a castor oil type polyurethane solution; This castor oil type polyurethane solution is to be processed by isocyanic ester polymer, Viscotrol C and long-chain alcohol reaction, and its solid content is 40%～60%; B component is one or both in Hydroxylated acrylic resin and the epoxy resin; During use, the weight ratio of A component and B component is 1: the mixed of (1～2), condition of cure are 180～220 ℃ and solidify 10～30min down.
The above-mentioned hydroxyl acrylic resin and the weight ratio of epoxy resin are (80～100): (0～20).
Hydroxy radical content in the above-mentioned Hydroxylated acrylic resin is 0.5～2.5%, and second-order transition temperature is-50～80 ℃.
Above-mentioned epoxy resin is E51 or E20.
The preparation method of above-mentioned castor oil type polyurethane is: Viscotrol C is vacuumized carry out processed earlier; Then isocyanic ester polymer, Viscotrol C and long-chain alcohol are pressed (30～40): (15～40): the weight ratio of (10～40) is dissolved in the solvent, and the control solid content is 40%～60%; 60～80 ℃ of reactions 5～7 hours, can obtain castor oil type polyurethane.
Above-mentioned isocyanic ester polymer is the '-diphenylmethane diisocyanate polymer, its-NCO content is 28～31%.
Above-mentioned long-chain alcohol is hexadecanol or stearyl alcohol.
It is the soft or hard that the effect of hexadecanol or stearyl alcohol is to regulate urethane that the present invention adopts long-chain alcohol.
The hydroxy radical content of the Hydroxylated acrylic resin that the present invention is used is 0.5-2.5%, and second-order transition temperature is-50～80 ℃, can be according to different use temperature territory range regulation second-order transition temperatures.
The effect of the epoxy resin that the present invention is used is to increase the cohesive force with sheet metal.
Warm territory, tan δ >=0.2 scope of castor oil type polyurethane/acrylic resin double-component damping material that the present invention is prepared is-50～120 ℃; After electrolytic galvanized sheet or heat zinc coating plate bonding; Respectively according to GB/T 2790-1995 and GB-T7124-1986 test T-stripping strength and tensile shear strength; Use the DXLL-10000 electronic tension tester of the outstanding machinery and equipment of Shanghai moral ltd to record its T-stripping strength＞10N/cm, tensile shear strength＞5MPa among the present invention.
Concrete embodiment
Following embodiment further specifies of the present invention, rather than limits scope of the present invention.
Embodiment one: the 28g Viscotrol C is vacuumized carry out processed earlier, add N-BUTYL ACETATE 76.2g, MDI polymer 24g, 24.2g hexadecanol then and about 70 ℃, react 6h, can obtain castor oil type polyurethane; In the above-mentioned A component that makes, adding the 63.5g second-order transition temperature during use mixes for-40 ℃ Hydroxylated acrylic resin, 12.7g epoxy resin.
The damping material that mixes is coated on the steel plate, and recording its T-stripping strength is 12N/cm, and tensile shear strength is 6.2MPa, and damping material tan δ >=0.2 warm territory scope is-50～60 ℃.
Embodiment two: the 28g Viscotrol C is vacuumized carry out processed earlier, add N-BUTYL ACETATE 76.2g, MDI polymer 24g, 24.2g hexadecanol then and about 70 ℃, react 6h, can obtain castor oil type polyurethane; In the above-mentioned A component that makes, adding the 86.2g second-order transition temperature during use mixes for-40 ℃ Hydroxylated acrylic resin.
The damping material that mixes is coated on the steel plate, and recording its T-stripping strength is 10.8N/cm, and tensile shear strength is 5.5MPa, and damping material tan δ >=0.2 warm territory scope is-63～54 ℃.
Embodiment three: the 16.8g Viscotrol C is vacuumized carry out processed earlier, add N-BUTYL ACETATE 80g, MDI polymer 28g, stearyl alcohol 35.3g then and about 70 ℃, react 7h, can obtain castor oil type polyurethane; In the above-mentioned A component that makes, adding the 62g second-order transition temperature during use mixes for-20 ℃ Hydroxylated acrylic resin, 11g epoxy resin.
The damping material that mixes is coated on the steel plate, and recording its T-stripping strength is 11N/cm, and tensile shear strength is 6.1MPa, and damping material tan δ >=0.2 warm territory scope is-32～72 ℃.
Claims (6)
1. castor oil type polyurethane/acrylic resin double-component damping material; It is characterized in that component A is a castor oil type polyurethane solution; This castor oil type polyurethane solution is to be processed by isocyanic ester polymer, Viscotrol C and long-chain alcohol reaction, and its solid content is 40%～60%; B component is one or both in Hydroxylated acrylic resin and the epoxy resin; During use, the weight ratio of A component and B component is 1: the mixed of (1～2), condition of cure are 180～220 ℃ and solidify 10～30min down; The weight ratio of described hydroxyl acrylic resin and epoxy resin is (80～100): (0～20).
2. castor oil type polyurethane/acrylic resin double-component damping material according to claim 1 is characterized in that the hydroxy radical content in the described Hydroxylated acrylic resin is 0.5～2.5%, and second-order transition temperature is-50～80 ℃.
3. castor oil type polyurethane/acrylic resin double-component damping material according to claim 1 is characterized in that described epoxy resin is E51 or E20.
4. castor oil type polyurethane/acrylic resin double-component damping material according to claim 1; The preparation method who it is characterized in that described castor oil type polyurethane is: Viscotrol C is vacuumized carry out processed earlier; Then isocyanic ester polymer, Viscotrol C and long-chain alcohol are pressed (30～40): (15～40): the weight ratio of (10～40) is dissolved in the solvent, and the control solid content is 40%～60%; 60～80 ℃ of reactions 5～7 hours, can obtain castor oil type polyurethane.
5. castor oil type polyurethane/acrylic resin double-component damping material according to claim 1 is characterized in that, described isocyanic ester polymer is the '-diphenylmethane diisocyanate polymer, its-NCO content is 28～31%.
6. according to claim 1 or 5 described castor oil type polyurethane/acrylic resin double-component damping materials, it is characterized in that described long-chain alcohol is hexadecanol or stearyl alcohol.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101265088A CN101805514B (en) | 2010-03-17 | 2010-03-17 | Castor oil type polyurethane/acrylic resin double-component damping material and preparation method thereof |
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| CN2010101265088A CN101805514B (en) | 2010-03-17 | 2010-03-17 | Castor oil type polyurethane/acrylic resin double-component damping material and preparation method thereof |
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| CN101805514A CN101805514A (en) | 2010-08-18 |
| CN101805514B true CN101805514B (en) | 2012-01-04 |
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| CN2010101265088A Expired - Fee Related CN101805514B (en) | 2010-03-17 | 2010-03-17 | Castor oil type polyurethane/acrylic resin double-component damping material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105860024A (en) * | 2016-04-29 | 2016-08-17 | 浙江工业大学之江学院 | Transparent polyurethane material with adjustable deformation recovery temperature and preparation method thereof |
| CN109824981B (en) * | 2019-03-06 | 2021-04-27 | 江苏南方包装有限公司 | High-toughness polypropylene plastic and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1442511A (en) * | 1973-04-24 | 1976-07-14 | Vianova Kunstharz Ag | Preparation of isocyanate resins |
| CN1355267A (en) * | 2001-12-24 | 2002-06-26 | 王申 | Water-soluble polyurethane latex adhesive with porous network formed by 'core-shell' structure |
| CN1326943C (en) * | 2001-11-19 | 2007-07-18 | 亚什兰许可和知识产权有限公司 | Two-part polyurethane adhesives for structural finger joints and method therefor |
| CN101481451A (en) * | 2009-01-23 | 2009-07-15 | 华南理工大学 | High solid content latent curing polyurethane acroleic acid hybrid emulsion |
| CN101597470A (en) * | 2008-06-03 | 2009-12-09 | 北京高盟燕山科技有限公司 | A kind of solvent free bi-component polyurethane adhesive and preparation method thereof |
-
2010
- 2010-03-17 CN CN2010101265088A patent/CN101805514B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1442511A (en) * | 1973-04-24 | 1976-07-14 | Vianova Kunstharz Ag | Preparation of isocyanate resins |
| CN1326943C (en) * | 2001-11-19 | 2007-07-18 | 亚什兰许可和知识产权有限公司 | Two-part polyurethane adhesives for structural finger joints and method therefor |
| CN1355267A (en) * | 2001-12-24 | 2002-06-26 | 王申 | Water-soluble polyurethane latex adhesive with porous network formed by 'core-shell' structure |
| CN101597470A (en) * | 2008-06-03 | 2009-12-09 | 北京高盟燕山科技有限公司 | A kind of solvent free bi-component polyurethane adhesive and preparation method thereof |
| CN101481451A (en) * | 2009-01-23 | 2009-07-15 | 华南理工大学 | High solid content latent curing polyurethane acroleic acid hybrid emulsion |
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