CN102002238B - High phenyl siloxane rubber-based high-intensity, wide-temperature range and high-damping material - Google Patents
High phenyl siloxane rubber-based high-intensity, wide-temperature range and high-damping material Download PDFInfo
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- CN102002238B CN102002238B CN2010105204219A CN201010520421A CN102002238B CN 102002238 B CN102002238 B CN 102002238B CN 2010105204219 A CN2010105204219 A CN 2010105204219A CN 201010520421 A CN201010520421 A CN 201010520421A CN 102002238 B CN102002238 B CN 102002238B
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Abstract
The invention relates to a high phenyl siloxane rubber-based high-intensity, wide-temperature range and high-damping material. The material comprises the following components in percentage by mass: 87.7 to 96.2 percent of high phenyl siloxane rubber, 1.8 to 1.9 percent of peroxide vulcanizing agent, 0 to 8.7 percent of mica sheet, 0 to 1.9 percent of acrylic ester damping agent and 0 to 8.9 percent of methyl methacrylate copolymer. The damping material is used for modifying the conventional material, so that the modified conventional material has high damping, vibration isolating and buffering performance as well as high mechanical property in a relatively wide temperature range; the material can meet the requirements of the tensile strength of more than or equal to 7 MPa, the elongation at rupture of more than or equal to 300 percent, the tearing strength of more than or equal to 20 kN/m, the damping coefficient beta max of more than or equal to 0.2 and the tearing permanent deformation of less than or equal to 25 percent and meets using requirements at the temperature of between 50 DEG C below zero and 150 DEG C; and volatile substances such as a plasticizer and process oil are not added in the formula of the material, so that the number of volatile matters in vacuum atmosphere is small and the pollution of the volatile matters on certain equipment on which the material is used is avoided.
Description
Technical field
The present invention relates to a kind of high-strength (the wide temperature of tensile strength>=7MPa) (in 50~+ 150 ℃ of TRs) high damping (ratio of damping β
Max>=0.2) material; Relate to particularly that a kind of (phenyl content is greater than 15% based on high phenyl siloxane rubber; Mass percent) high-strength wide temperature high damping material belongs to damping material formulating of recipe technical field, mainly handles material as the damping rubber material of separated/vibroshock and the additional damping of structure.
Background technology
The damping isolation technology that grows up based on the viscoelastic damping damping material is the effective way of control vibration, impact and noise; It is the effective means of improving structure and plant and instrument mechanical environment; Particularly wideband random vibration and the shock problem to high precision apparatus more has irreplaceable effect; Viscoelastic damping damping material and goods thereof the vibration of multiple instrument, navigational aid and electronic system etc. and noise control aspect be used widely; But the vibration environment that various device, instrument bear is more and more abominable; Vibration and impact magnitude are more and more big, are faced with the complicated environment for use that low temperature is lower, high temperature is higher simultaneously, and this has proposed high requirement to the anti-vibration and shock technology.Good damping material is to solve the requisite prerequisite of anti-vibration and shock problem.
Domestic existing damping material Applicable temperature is generally about-30~+ 100 ℃; The highest of damping factor β reaches about 0.2; Tensile strength is on the low side, and is not that being suitable for warm territory narrow is exactly that damping factor is low, does not reach that existing good damping isolation performance has the good mechanical performance again in the wide temperature territory; Bigger with the performance gap of external damping material; Can not satisfy the request for utilization of complicated severe environment, therefore need badly current material is improved, develop use temperature scope wideer (50~+ 150 ℃), higher (the ratio of damping β of damping factor
Max>=0.2), higher (damping material of tensile strength>=7MPa) is to satisfy the needs that the various device instrument uses for intensity.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiency of prior art, provide a kind of in-50~+ 150 ℃ of TRs, ratio of damping β
Max>=0.2, the damping material of tensile strength>=7MPa based on high phenyl siloxane rubber.
Technical solution of the present invention is: a kind of high-strength wide temperature high damping material based on high phenyl siloxane rubber, comprise following component by mass percent,
High phenyl siloxane rubber 87.7%~96.2%,
Peroxo-sulfuration agent 1.8%~1.9%,
The mixture that wherein also comprises any or sheet mica and esters of acrylic acid damping agent in sheet mica, esters of acrylic acid damping agent and the methylmethacrylate copolymer; The mass percent of sheet mica, esters of acrylic acid damping agent and methylmethacrylate copolymer does; Sheet mica 0~8.7%; Esters of acrylic acid damping agent 0~1.9%, methylmethacrylate copolymer 0~8.9%.
Described constituent mass per-cent is high phenyl siloxane rubber 91.8%, peroxo-sulfuration agent 1.8%, sheet mica 4.7%, esters of acrylic acid damping agent 1.7%.
Described constituent mass per-cent is high phenyl siloxane rubber 87.7%, peroxo-sulfuration agent 1.8%, sheet mica 8.7%, esters of acrylic acid damping agent 1.8%.
Described constituent mass per-cent is high phenyl siloxane rubber 96.2%, peroxo-sulfuration agent 1.9%, esters of acrylic acid damping agent 1.9%.
Described constituent mass per-cent is high phenyl siloxane rubber 89.3%, peroxo-sulfuration agent 1.8%, methylmethacrylate copolymer 8.9%.
Described constituent mass per-cent is high phenyl siloxane rubber 93.5%, peroxo-sulfuration agent 1.8%, sheet mica 4.7%.
The present invention compared with prior art beneficial effect is:
(1) damping material of the present invention carries out modification to current material, makes its existing good damping isolation shock-absorbing capacity in awide temperature range, and the good mechanical performance is arranged again;
(2) the present invention can satisfy tensile strength>=7MPa, tensile yield>=300%, tear strength>=20KN/m, ratio of damping β
Max>=0.2, setafter break≤25%, and in-50~+ 150 ℃ of TRs, satisfy request for utilization;
(3) do not add the volatile material of softening agent and process oil and so in the prescription of the present invention, fugitive constituent is few under vacuum atmosphere, volatile matter meeting contaminated equipment when having avoided on some equipment, using;
(4) the present invention uses on a plurality of equipment or instrument, and has obtained significant anti-vibration and shock effect, and can be applied to the vibration control of instrument and electronic system on aircraft, boats and ships and the vehicle and noise control, has broad application prospects.
Description of drawings
Fig. 1 is the performance chart under the high low temperature of the present invention;
Fig. 2 is preparation technology's schema of the present invention.
Embodiment
Key points in design of the present invention:
1,, guaranteeing that it has under the prerequisite of higher mechanical strength, widens the TR that it is suitable for through study on the modification to existing damping material.
Phenyl siloxane rubber is owing to the existence of phenyl, and steric effect is obvious, makes damping factor be higher than general Zylox; Low-phenyl silicone rubber has remarkable low-temperature performance; Major cause does, the phenyl of side group has destroyed the regularity of chain, hindered at low temperatures the regularly arranged and crystallization of molecular chain.But when phenyl content continues to increase, increase with the molecular chain rigidity owing to sterically hindered, influenced the flexibility of chain, low-temperature performance degenerates, but still is superior to general Zylox.
Starting material that high phenyl damping material is selected for use and set of dispense are such as following: high phenyl siloxane rubber (87.7%~96.2%); Peroxo-sulfuration agent (1.8%~1.9%); Sheet mica (0~8.7%), esters of acrylic acid damping agent (0~1.9%), methylmethacrylate copolymer (0~8.9%).The proportioning that each component is different can make damping material have the different elasticity shearing modulus, thereby can make damping material be suitable for different vibration damping requirements.The kind of raw material can add or not add as required.
2, carry out blend and cooperate architectural study, the wide temperature high damping material of novel high-strength is met the demands at aspects such as damping factor, use temperature scopes.
The major technique approach is a mechanical blending.Its key problem in technology is to confirm blend components, confirm that blending technology is studied and consistency, stability and the sulfuration process of blend according to the glass transition region of material and consistency thereof.High phenyl damping material sulfuration process is as shown in Figure 2: take opening rubber mixing machine or Banbury mixer, refine glue according to the order of addition(of ingredients) of high phenyl siloxane rubber, peroxo-sulfuration agent, sheet mica, damping agent, multipolymer.Glue furnacing temperature can not be above 60 ℃.The one step cure temperature is at 165~175 ℃, curing time 15~20min.The post vulcanization condition is to be warmed up to 200 ℃ in 1 hour, naturally cools to room temperature again behind the insulation 4h.
3, technical indicator of the present invention:
(1) tensile strength >=7MPa,
(2) tensile yield >=300%,
(3) tear strength >=20KN/m,
(4) ratio of damping β
Max>=0.2,
(5) setafter break≤25%,
(6) in-50~+ 150 ℃ of TRs, satisfy request for utilization.
Performance chart under the high low temperature of the present invention is as shown in Figure 1.
Below in conjunction with specific embodiment the present invention is further specified:
Embodiment 1
Damping material proportioning (mass percent):
High phenyl siloxane rubber 87.7%,
Peroxo-sulfuration agent 1.8%,
Sheet mica 8.7%,
Esters of acrylic acid damping agent 1.8%.
Preparation technology:
Peroxo-is vulcanized in the high phenyl siloxane rubber of joining of agent, add sheet mica and esters of acrylic acid damping agent again, mixing under 55 ℃, vulcanize 15min down at 165 ℃ after the slice, be warmed up to 200 ℃ again in the 40min, naturally cool to room temperature again behind the insulation 4h.
Performance:
The tensile strength 7.5MPa of present embodiment damping material, tearing strength 28.5MPa, setafter break 14% is at-50~+ 150 ℃ of TR internal damping factor-betas
MaxBe 0.41, shearing modulus is greater than 2.4MPa.
Damping material proportioning (mass percent):
High phenyl siloxane rubber 91.8%,
Peroxo-sulfuration agent 1.8%,
Sheet mica 4.7%,
Esters of acrylic acid damping agent 1.7%.
Preparation technology:
Peroxo-is vulcanized in the high phenyl siloxane rubber of joining of agent, add sheet mica and damping agent again, mixing under 60 ℃, vulcanize 20min down at 170 ℃ after the slice, be warmed up to 200 ℃ again in the 50min, naturally cool to room temperature again behind the insulation 4h.
Performance:
The tensile strength 8.9MPa of present embodiment damping material, tearing strength 31.6KN/m, setafter break 16% is at-50~+ 150 ℃ of TR internal damping factor-betas
MaxBe 0.49, shearing modulus is greater than 2MPa.
Embodiment 3
Damping material proportioning (mass percent):
High phenyl siloxane rubber 96.2%,
Peroxo-sulfuration agent 1.9%,
Esters of acrylic acid damping agent 1.9%.
Preparation technology:
Peroxo-is vulcanized in the high phenyl siloxane rubber of joining of agent, add damping agent again, mixing under 60 ℃, vulcanize 20min down at 175 ℃ after the slice, be warmed up to 200 ℃ again in the 60min, naturally cool to room temperature again behind the insulation 4h.
Performance:
The tensile strength 7.5MPa of present embodiment damping material, tearing strength 35KN/m, setafter break 22% is at-50~+ 150 ℃ of TR internal damping factor-betas
MaxBe 0.5, shearing modulus is greater than 2MPa.
Damping material proportioning (mass percent):
High phenyl siloxane rubber 89.3%,
Peroxo-sulfuration agent 1.8%,
Methylmethacrylate copolymer 8.9%.
Preparation technology:
Peroxo-is vulcanized in the high phenyl siloxane rubber of joining of agent, add methylmethacrylate copolymer again, mixing under being lower than 60 ℃, vulcanize 15min down at 165 ℃ after the slice, be warmed up to 200 ℃ again in the 40min, naturally cool to room temperature again behind the insulation 4h.
Performance:
The tensile strength 7.1MPa of present embodiment damping material, tearing strength 22MPa, setafter break 22% is at-50~+ 150 ℃ of TR internal damping factor-betas
MaxBe 0.41, shearing modulus is greater than 1.4MPa.
Embodiment 5
Damping material proportioning (mass percent):
High phenyl siloxane rubber 93.5%,
Peroxo-sulfuration agent 1.8%,
Sheet mica 4.7%.
Preparation technology:
Peroxo-is vulcanized in the high phenyl siloxane rubber of joining of agent, add methylmethacrylate copolymer again, mixing under being lower than 60 ℃, vulcanize 15min down at 165 ℃ after the slice, be warmed up to 200 ℃ again in the 40min, naturally cool to room temperature again behind the insulation 4h.
Performance:
The tensile strength 7.7MPa of present embodiment damping material, tearing strength 25.8MPa, setafter break 16% is at-50~+ 150 ℃ of TR internal damping factor-betas
MaxBe 0.45, shearing modulus is greater than 2.1MPa.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (6)
1. high-strength wide temperature high damping material based on high phenyl siloxane rubber is characterized in that: comprise following component by mass percent,
High phenyl siloxane rubber 87.7%~96.2%,
Peroxo-sulfuration agent 1.8%~1.9%,
The mixture that wherein also comprises any or sheet mica and esters of acrylic acid damping agent in sheet mica, esters of acrylic acid damping agent and the methylmethacrylate copolymer; The mass percent of sheet mica, esters of acrylic acid damping agent and methylmethacrylate copolymer does; Sheet mica 0~8.7%; Esters of acrylic acid damping agent 0~1.9%, methylmethacrylate copolymer 0~8.9%
Tensile strength>=the 7MPa of said high-strength finger material, wide temperature refers to that the TR of material is-50~+ 150 ℃, high damping refers to the ratio of damping β of material
Max>=0.2, high phenyl refers to that the phenyl mass percent is greater than 15% in the Zylox.
2. a kind of high-strength wide temperature high damping material according to claim 1 based on high phenyl siloxane rubber; It is characterized in that: described constituent mass per-cent is high phenyl siloxane rubber 91.8%, peroxo-sulfuration agent 1.8%; Sheet mica 4.7%, esters of acrylic acid damping agent 1.7%.
3. a kind of high-strength wide temperature high damping material according to claim 1 based on high phenyl siloxane rubber; It is characterized in that: described constituent mass per-cent is high phenyl siloxane rubber 87.7%, peroxo-sulfuration agent 1.8%; Sheet mica 8.7%, esters of acrylic acid damping agent 1.8%.
4. a kind of high-strength wide temperature high damping material based on high phenyl siloxane rubber according to claim 1 is characterized in that: described constituent mass per-cent is high phenyl siloxane rubber 96.2%, peroxo-sulfuration agent 1.9%, esters of acrylic acid damping agent 1.9%.
5. a kind of high-strength wide temperature high damping material according to claim 1 based on high phenyl siloxane rubber; It is characterized in that: described constituent mass per-cent does; High phenyl siloxane rubber 89.3%, peroxo-sulfuration agent 1.8%, methylmethacrylate copolymer 8.9%.
6. a kind of high-strength wide temperature high damping material based on high phenyl siloxane rubber according to claim 1 is characterized in that: described constituent mass per-cent is high phenyl siloxane rubber 93.5%, peroxo-sulfuration agent 1.8%, sheet mica 4.7%.
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CN104725861A (en) * | 2014-12-17 | 2015-06-24 | 苏州锦腾电子科技有限公司 | High-damping high-abrasion-resistance silicone rubber and preparation method thereof |
CN107022195B (en) * | 2017-04-13 | 2020-03-27 | 东莞市帝克兰新材料科技有限公司 | High-damping silica gel mud, composite material containing high-damping silica gel mud, and preparation method and application of composite material |
CN109337371A (en) * | 2018-10-25 | 2019-02-15 | 合肥永泰新型建材有限公司 | A kind of antiseptic fire-retardation high-damping rubber new material and preparation method thereof |
CN112210216B (en) * | 2020-08-31 | 2022-07-12 | 四川中物材料股份有限公司 | High-damping phenyl silicone rubber and preparation method and application thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5464659A (en) * | 1991-05-23 | 1995-11-07 | Minnesota Mining And Manufacturing Company | Silicone/acrylate vibration dampers |
CN1410485A (en) * | 2001-09-28 | 2003-04-16 | 四川大学 | Preparation method of wide temperature wide spectrum polyacrylic acid ester/polysiloxane composite damping rubber |
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Publication number | Priority date | Publication date | Assignee | Title |
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US5464659A (en) * | 1991-05-23 | 1995-11-07 | Minnesota Mining And Manufacturing Company | Silicone/acrylate vibration dampers |
CN1410485A (en) * | 2001-09-28 | 2003-04-16 | 四川大学 | Preparation method of wide temperature wide spectrum polyacrylic acid ester/polysiloxane composite damping rubber |
Non-Patent Citations (1)
Title |
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唐振华等.苯基含量对甲基乙烯基苯基硅橡胶性能的影响.《橡胶工业》.2007,第54卷(第10期),第610页第2,5-7段,第611页第6-7段,图3. * |
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