CN85104739A - The method of synthetic-series of interpenetrating polymer networks (IPN) damping material - Google Patents
The method of synthetic-series of interpenetrating polymer networks (IPN) damping material Download PDFInfo
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- CN85104739A CN85104739A CN85104739.4A CN85104739A CN85104739A CN 85104739 A CN85104739 A CN 85104739A CN 85104739 A CN85104739 A CN 85104739A CN 85104739 A CN85104739 A CN 85104739A
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Abstract
The invention provides the method for synthetic-series of interpenetrating polymer networks (IPN) (IPN) damping material.The surface of vibrating mass be can be applied directly to this method synthetic damping material, vibration damping, sound deadening played.
The present invention is at first synthetic with emulsion polymerization to be first network of basal component with the polystyrene, and resynthesis is second network of basal component with the butyl polyacrylate afterwards.Also can synthesize the 3rd network as required.Have broad damping temperature range and stronger damping characteristic with this method synthetic damping material.
Description
The present invention relates to the synthetic of the synthetic of damping material, particularly a series of interpenetrating polymer networks (IPN) (IPN) damping material.This damping material can be coated on the vibrating mass surface, plays vibration damping, sound deadening.
Existing damping material mostly is homopolymer, random copolymers, mechanical blend, connects skill and segmented copolymer.The effective damping temperature range of homopolymer and random copolymers is narrower, generally has only 20-30 ℃ temperature range, and mechanical blend, connect two components in skill and the segmented copolymer consistency often bad, thereby the damping capacity of system is bad in the temperature province between the glass transition region that is equivalent to two homopolymer.Occur a kind of latex ipn Polymer Blending System in recent years, had damping characteristic preferably.At US-3, in 833, No. 404 patents, Sperling has proposed the claim requirement to PMMA/PEA, PS/PEA latex ipn damping system.
The objective of the invention is with vinylbenzene, Butyl acrylate is main raw material, synthesizes the latex ipn damping material with wide temperature range or assigned temperature zone.Computer search result since 1969 confirms to the CA document databse, the still unmanned report of the work of this respect.
Characteristics of the present invention are that synthetic first component (being first synthetic component) is that reticular polystyrene or its multipolymer, second component (i.e. back synthetic component) are netted butyl polyacrylates.As required, can also synthesize the 3rd component or more component.Implementation method of the present invention is, at first with synthetic first component of emulsion polymerization.First component is a reticular polystyrene, or a kind of in the vinylbenzene-methacrylic ester, cinnamic acrylic ester network copolymer.First component is synthetic finish after, do not add new emulsifying agent, in emulsion, add monomer, linking agent and the initiator of second component again, initiated polymerization generates second component.The network of two components is separate and be applied in together mutually.Second component is netted butyl polyacrylate, or a kind of in the BA-St, butyl acrylate-methacrylic ester, butyl acrylate-other acrylate network copolymer.The weight ratio of first component and second component can be 10/90-90/10, but with 15/85-80/20 for well.In this emulsion, add and promptly can be used as damping paint behind stablizer, thickening material and the filler and be applied directly to the vibrating mass surface.Copolymerization in first and second components is formed and the weight ratio of two components by adjusting, and the damping capacity of damping material and temperature range can in very large range change.If desired, also can in synthetic latex ipn emulsion, add monomer, linking agent and the initiator of the 3rd component again, form three components (ternary) latex ipn damping material.The 3rd component is a kind of in netted polyacrylic acid fourth fat or BA-St, butyl acrylate-methacrylic ester, butyl acrylate-other acrylate network copolymer.First, second and the 3rd component should not have identical formation.Use the same method and to synthesize quaternary, five yuan of IPN damping materials.Its follow-up component is netted butyl polyacrylate, vinylbenzene-methacrylic ester, cinnamic acrylic ester, methacrylic ester-acrylate network copolymer.Each component should not have identical formation.All components all is linking agent with the Vinylstyrene, and its add-on is the 0.1-10% of composition weight, but with 0.1-5% for well.The synthetic order of each component also can be put upside down.
With aforesaid method synthetic damping material damping temperature wide ranges, damping factor is higher.Can also synthesize easily according to different use temperatures with this method and to have the damping material that is applicable to the assigned temperature zone.It also has and saves organic solvent, safety, advantage that toxicity is little when using as damping paint.
(example 1)
The lauryl sodium sulfate aqueous solution that in 250 parts of deionized waters, adds 50 part 10%, heating is also stirred, and when temperature reached 60-65 ℃, constant temperature added 0.3 part of K then
2S
2O
8, 50 parts of vinylbenzene that are mixed with 0.2 part of Vinylstyrene, reaction caused post polymerization 1 hour, added 0.3 part of K again in this emulsion
2S
2O
8, 50 parts of butyl acrylates that are mixed with 1 part of Vinylstyrene, reaction caused post polymerization 1 hour.Its damping capacity is surveyed in casting film, dry back.Fig. 1 has shown that the size of its damping factor η (η=E "/E, E " and E are respectively its loss wedge amount and storage modulus) reaches with the variation of temperature situation.The value of its damping factor is all more than 0.1 in-40-+60 ℃ temperature range, and in-1-+60 ℃ temperature range, the value of its damping factor is all more than 0.4.
(example 2)
The lauryl sodium sulfate aqueous solution that adds 50 part 10% in 250 parts of deionized waters stirs and heating, and when temperature reached 60-65 ℃, constant temperature added 0.2 part of K then
2S
2O
8, 25 parts of vinylbenzene that are mixed with 0.1 part of Vinylstyrene, reaction caused post polymerization 1 hour, added 0.2 part of K again in this emulsion
2S
2O
825 parts of vinylbenzene one butyl acrylate mixture (1: 1) that are mixed with 0.1 part of Vinylstyrene, reaction caused post polymerization 1 hour.In this emulsion, add 0.3 part of K at last again
2S
2O
8, 50 parts of butyl acrylates that are mixed with 0.2 part of Vinylstyrene, reaction caused post polymerization 1 hour.Its damping capacity is surveyed in casting film and dry back.The size of its damping factor η reaches sees Fig. 2 with the variation of temperature situation.The characteristics of this damping material are that the damping capacity of high-temperature zone is stronger, and the value of its damping factor is all more than 0.5 in 30-60 ℃ of temperature range.
Claims (11)
1, the method for synthetic damping material, a particularly synthetic class has the method for cross-linked emulsion polymer (IPN) damping material in broad temperature range or assigned temperature zone.It is characterized in that synthetic first component is reticular polystyrene or its network copolymer, synthetic second component is netted butyl polyacrylate or its network copolymer.As required can also resynthesis the 3rd component constitute ternary latex ipn damping material, in like manner can also synthesize polynary latex ipn damping materials such as quaternary, five yuan.The synthetic order of each component can be put upside down.
According to the method for claim 1, it is characterized in that 2, synthetic first component is a reticular polystyrene.
According to the method for claim 1, it is characterized in that 3, synthetic first component is vinylbenzene-methacrylic ester or cinnamic acrylic ester network copolymer.
According to the method for claim 1, it is characterized in that 4, synthetic second component is netted butyl polyacrylate.
According to the method for claim 1, it is characterized in that 5, synthetic second component is the BA-St network copolymer, or butyl acrylate-butyl methacrylate network copolymer, or butyl acrylate-other acrylate network copolymer.
According to the method for claim 2-5, it is characterized in that 6, to synthetic latex ipn damping material with two components, the weight ratio of its first component and second component is 15/85-80/20.
7, according to the method for claim 1, it is characterized in that synthesis of ternary and polynary latex ipn damping material.
According to the method for claim 7, it is characterized in that 8, the first, the second component of synthetic ternary and polynary latex ipn is with first, second component of two component latex ipns.Synthetic the 3rd component and follow-up component are netted butyl polyacrylates, or the BA-St network copolymer, or butyl acrylate-methacrylic ester network copolymer, or butyl acrylate-other acrylate network copolymer.
9, according to the method for claim 2-5 and 8, it is characterized in that, each component all with Vinylstyrene as linking agent.
According to the method for claim 2-5 and 8, it is characterized in that 10, the add-on of linking agent is the 0.1-5% of composition weight.
According to the method for claim 1, it is characterized in that 11, the synthetic order of each component can be put upside down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104739.4A CN1004875B (en) | 1985-06-25 | 1985-06-25 | Syntheses of a series of interpenetrating polymer networks (ipn) of damping materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85104739.4A CN1004875B (en) | 1985-06-25 | 1985-06-25 | Syntheses of a series of interpenetrating polymer networks (ipn) of damping materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85104739A true CN85104739A (en) | 1987-01-07 |
| CN1004875B CN1004875B (en) | 1989-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85104739.4A Expired CN1004875B (en) | 1985-06-25 | 1985-06-25 | Syntheses of a series of interpenetrating polymer networks (ipn) of damping materials |
Country Status (1)
| Country | Link |
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| CN (1) | CN1004875B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104673009A (en) * | 2015-03-24 | 2015-06-03 | 中国化工株洲橡胶研究设计院有限公司 | Emulsion for water-based sound-insulation anticorrosive paint and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065224C (en) * | 1997-01-25 | 2001-05-02 | 李春岭 | Water absorption and soil wetting agent, and method for preparing same |
-
1985
- 1985-06-25 CN CN85104739.4A patent/CN1004875B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104673009A (en) * | 2015-03-24 | 2015-06-03 | 中国化工株洲橡胶研究设计院有限公司 | Emulsion for water-based sound-insulation anticorrosive paint and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1004875B (en) | 1989-07-26 |
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