CN106398219A - Low-hardness damping silicone buffer material and preparation method thereof - Google Patents
Low-hardness damping silicone buffer material and preparation method thereof Download PDFInfo
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- CN106398219A CN106398219A CN201610795217.5A CN201610795217A CN106398219A CN 106398219 A CN106398219 A CN 106398219A CN 201610795217 A CN201610795217 A CN 201610795217A CN 106398219 A CN106398219 A CN 106398219A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention relates to the technical field of silicone, and in particular to a low-hardness damping silicone buffer material and a preparation method thereof. The low-hardness damping silicone buffer material comprises the following components in parts by mass: 50-80 parts of liquid silicone rubber, 5-50 parts of methyl vinyl silicone oil, 1-5 parts of hydrogen-containing silicone oil, 0.5-1.5 parts of a platinum catalyst and 0.01-0.05 part of an inhibitor. According to the low-hardness damping silicone buffer material provided by the invention, Si-H bonds of the hydrogen-containing silicone oil are activated to carry out a hydrosilylation addition reaction by the platinum catalyst, and an elastomer of a three-dimensional meshed structure is formed, so that the prepared low-hardness damping silicone buffer material has good high/low-temperature adaptation, excellent flexibility, good buffer performance and physiologically inert, is difficult to age and deform, can be widely applied to high-precision electronic instruments and light electronic devices and can achieve the buffering and damping effects; therefore, normal application of the electronic instruments or electronic devices is guaranteed.
Description
Technical field
The present invention relates to silicon rubber technical field, especially relate to a kind of soft damping silica gel padded coaming and its preparation
Method.
Background technology
Develop rapidly with commercial production, vibration and noise have become as the serious problems of every field：It can reduce behaviour
Make precision, impact product quality, shorten life of product so that high-precision instrument cisco unity malfunction, jeopardize safety, especially make
Some electronic products give people body and bring safely threat, and therefore, development has shockproof, noise reduction function padded coaming and has become as respectively
The key subjects that state's industrial development faces.
At present, people carry out shockproof noise reduction often through the padded coaming such as polyethylene foamed and foaming polyphenyl alkene, but these
, when being applied to some high-precision electronic machines and frivolous electronic equipment, its high and low temperature resistance is poor, easily for padded coaming
Ageing failure, has a strong impact on the normal use of electronic machine or electronic equipment.
In view of this, the special proposition present invention.
Content of the invention
The first object of the present invention is to provide a kind of soft damping silica gel padded coaming, and it has the wide of inorganic substances concurrently
General high/low temperature adaptability and the characteristic of organic elastomeric polymer body, can make within the temperature range of -40 DEG C～150 DEG C for a long time
With meeting precision electronic device or electronic equipment for padded coaming is shockproof, noise reduction, heat-resisting demand.
In the present invention, soft damping silica gel padded coaming refers to carry out hardness test according to ASTM-2240, and firmly
Degree (shore A) damping silica gel padded coaming below 35.
The invention provides a kind of soft damps silica gel padded coaming, according to the mass fraction, including following component：
Wherein, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.4-0.8wt/%.
The viscosity of described liquid-state silicon gel is 10000-100000mpa s at 25 DEG C, described methyl vinyl silicon oil viscous
Degree is 10000-100000mpa s at 25 DEG C.
The typical but non-limiting content of described liquid-state silicon gel as 52 parts, 54 parts, 55 parts, 56 parts, 58 parts, 60 parts,
61 parts, 63 parts, 65 parts, 67 parts, 69 parts, 70 parts, 72 parts, 74 parts, 75 parts, 76 parts, 78 parts or 79 parts.
The typical but non-limiting content of described methyl vinyl silicon oil as 5 parts, 7 parts, 9 parts, 10 parts, 12 parts, 15
Part, 17 parts, 18 parts, 20 parts, 21 parts, 23 parts, 25 parts, 27 parts, 29 parts, 30 parts, 31 parts, 33 parts, 35 parts, 37 parts, 39 parts, 40
Part, 42 parts, 43 parts, 45 parts, 47 parts or 49 parts.
The typical but non-limiting content of described containing hydrogen silicone oil as 1.1 parts, 1.3 parts, 1.5 parts, 1.7 parts, 1.9 parts, 2
Part, 2.1 parts, 2.3 parts, 2.5 parts, 2.7 parts, 2.9 parts, 3 parts, 3.2 parts, 3.4 parts, 3.5 parts, 3.7 parts, 3.9 parts, 4 parts, 4.1 parts,
4.3 parts, 4.5 parts, 4.7 parts or 4.9 parts.
The typical but non-limiting content of described platinum catalyst as 0.55 part, 0.6 part, 0.65 part, 0.7 part,
0.75 part, 0.8 part, 0.85 part, 0.9 part, 0.95 part, 1 part, 1.05 parts, 1.1 parts, 1.15 parts, 1.2 parts 1.25 parts, 1.3 parts,
1.35 parts, 1.4 parts or 1.45 parts.
The typical but non-limiting content of described inhibitor as 0.015 part, 0.02 part, 0.025 part, 0.03 part,
0.035 part, 0.04 part or 0.045 part.The early stage of each component can be suppressed to solidify by adding inhibitor, so that cross-linking reaction is carried out
More complete.
The soft damping silica gel padded coaming that the present invention provides, activates the Si -- H bond of containing hydrogen silicone oil by platinum catalyst
There is hydrosilylation, form the elastomer of tridimensional network, make prepared soft damp silica gel padded coaming and have
Good high/low temperature adaptability, relatively low hardness, preferable pliability, resiliency and physiological inertia, and non-aging deformation,
Can be widely applied for high-precision electronic machine and frivolous electronic equipment, the effect playing buffering and damping is it is ensured that electronics
Instrument or the normal use of electronic equipment.
Preferably, described soft damps silica gel padded coaming, according to the mass fraction, including following component：
The viscosity of described methyl MQ silicones is 500-20000mpa s at 25 DEG C, described methyl vinyl MQ silicon tree
The viscosity of fat is 500-20000mpa s at 25 DEG C.
The typical but non-limiting content of described methyl MQ silicones as 2 parts, 2.2 parts, 2.4 parts, 2.5 parts, 2.7
Part, 2.9 parts, 3 parts, 3.1 parts, 3.3 parts, 3.5 parts, 3.7 parts, 3.9 parts, 4 parts, 4.1 parts, 4.3 parts, 4.5 parts, 4.7 parts or 4.9
Part.
The typical but non-limiting content of described methyl vinyl MQ silicone rubber as 5.5 parts, 6 parts, 6.5 parts, 7 parts,
7.5 parts, 8 parts, 8.5 parts, 9 parts or 9.5 parts.
By adding methyl MQ silicones and methyl vinyl MQ silicon resin, strengthen buffered silica gel material mechanical strength,
Cohesive strength and resistance to elevated temperatures, play strengthening action.Compared with methyl vinyl silicon oil, methyl MQ silicones and ethylene methacrylic
The relative molecular mass of base MQ silicones is little, and contents of ethylene height can form " Concentrative crosslinking " so as to have good enhancing effect
Really.
Preferably, described soft damps silica gel padded coaming, according to the mass fraction, including following component：
The viscosity of described phenyl vinyl MQ silicone resin is 500-20000mpa s at 25 DEG C.
Preferably, described soft damping silica gel padded coaming also includes allyl based polysiloxane, the poly- silicon of described pi-allyl
The mass fraction of oxygen alkane is 5-10 part.
The viscosity of described allyl based polysiloxane is 10000-100000mpa s at 25 DEG C.
Preferably, described platinum catalyst is platinum black, the complex of platinum chloride, chloroplatinic acid and monohydric alcohol, chloroplatinic acid and alkene
One of the complex of hydro carbons, the chelate of platinum vinylsiloxane or acetoacetic acid platinum or at least two combination.
Preferably, described inhibitor is ethynylcyclohexanol, cyclic vinyl radical siloxane, tetravinyl tetramethyl cyclotetrasiloxane silicon
In oxygen alkane or benzotriazole a kind of or at least two combination.
Preferably, described also include organic titanic compound, described organic titanic compound be tetrabutyl titanate, metatitanic acid isobutyl
Ester, dimethoxy-methyl acetoacetic acid titanium, diisopropoxy titanium acetylacetone, diisopropoxy oacetic acid titanium or two are different
In propoxy methyl acetoacetic acid titanium a kind of or at least two combination.
" inclusion " of the present invention, it is intended that it removes described group exceptionally, can also include other components, these other components
Give described soft and damp the different characteristic of silica gel padded coaming.In addition, " inclusion " of the present invention, can also replace
Be changed to enclosed " for " or " by ... form ".
The second object of the present invention is the preparation side providing a kind of soft as above to damp silica gel padded coaming
Method, methods described comprises the steps：
A () is by liquid-state silicon gel, methyl vinyl silicon oil, containing hydrogen silicone oil, platinum catalyst, inhibitor, optionally methyl MQ
The poly- silica of silicones, optionally methyl vinyl MQ silicon resin, optionally phenyl vinyl MQ silicone resin and optionally pi-allyl
Alkane mixes, and forms raw mixture；
B described mixture is stirred under vacuum and heating condition by (), form precoat；
(c) by described precoat pass through calendering technology laminating on thin film, formed composite membrane；
D described composite membrane is carried out baking process by (), product.
In step (a), by liquid-state silicon gel, methyl vinyl silicon oil, containing hydrogen silicone oil, platinum catalyst, inhibitor, optionally
Ground methyl MQ silicones, optionally methyl vinyl MQ silicon resin, optionally phenyl vinyl MQ silicone resin and optionally allyl
Based polysiloxane adds in reaction vessel, forms raw mixture；
In step (b), evacuation is carried out to above-mentioned reaction vessel, so that above-mentioned raw materials mixture is stirred under vacuum
0.2-0.5 hour, forms precoat；
In step (c), above-mentioned precoat is evenly applied on thin film by calender, forms composite membrane；
In step (d), above-mentioned composite membrane is put into ir tunnel stove in temperature 80-160 DEG C, toasts 5-15 minute, that is,
Make silica gel expanded material.
Preferably, described thin film is through coating bonding reinforcing agent or Corona discharge Treatment.
By on thin film coating bonding reinforcing agent, to strengthen the cementability between precoat and thin film, make precoat with
Film bond more firm.
By carrying out Corona discharge Treatment in film surface, make film surface generate polar group, increase film surface pole
Property, the cohesive on enhanced film surface, make the more firm of precoat and film bond.
Preferably, described thin film be mylar, fluorine element mould release membrance or Kapton.
Mylar abbreviation polyethylene terephthalate (PET) thin film, feature is high temperature resistant easy processing, and proof voltage is exhausted
Edge is good, and it is with polyethylene terephthalate as raw material, makes sheet using extrusion molding, then make through biaxial tension
Thin-film material.It is a kind of water white transparency, glossiness thin film, good mechanical performance, and rigidity, hardness and toughness are high, puncture-resistant,
Rub resistance, high temperature resistant and low temperature, chemical proofing, oil resistivity, air-tightness and fragrance protectiveness are good.
Fluorine element mould release membrance is base material by polyethylene terephthalate (PET), and product surface coats 0.2um～0.6um
The release material of fluorine.Uniformly, this product has that physical and mechanical propertiess are excellent, thickness deviation is little, saturating to the smooth bright and clean, coating of film surface
The advantages of lightness is high, percent thermal shrinkage is low, pliability is good.
Kapton is obtained or by bibenzene tetracarboxylic dianhydride and hexichol with diaminodiphenyl ether by pyromellitic dianhydride
Ether diamine (R type) or m-diaminobenzene. (S type) are obtained, and it has excellent heat stability, chemical resistance and mechanical performance, resistance to
High temperature performance is excellent, and fire protecting performance is good.
Compared with prior art, beneficial effects of the present invention are：
The soft damping silica gel padded coaming that the present invention provides, activates the Si -- H bond of containing hydrogen silicone oil by platinum catalyst
There is hydrosilylation addition reaction, form the elastomer of tridimensional network, make prepared soft damp silica gel padded coaming tool
There are good high/low temperature adaptability, relatively low hardness, preferable pliability, tensile strength and physiological inertia, and non-aging
Deformation, can be widely applied for high-precision electronic machine and frivolous electronic equipment, play buffering and damping effect it is ensured that
Electronic machine or the normal use of electronic equipment.The soft that the present invention provides damps the preparation method of silica gel padded coaming, work
Skill simply it is easy to operation, can effectively reduce the working strength of operator.
Specific embodiment
Below in conjunction with embodiment, embodiment of the present invention is described in detail, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and be not construed as limiting the scope of the present invention.Unreceipted concrete in embodiment
Condition person, the condition according to normal condition or manufacturer's suggestion is carried out.Agents useful for same or the unreceipted production firm person of instrument, are
Can be by the commercially available conventional products bought and obtain.
Embodiment 1
A kind of soft damps silica gel padded coaming, its according to the mass fraction, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.4wt/%, liquid
The viscosity of state silica gel is 10000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 10000mPa s at 25 DEG C.
Embodiment 2
A kind of soft damps silica gel padded coaming, its according to the mass fraction, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.8wt/%, liquid
The viscosity of state silica gel is 100000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 100000mPa at 25 DEG C
s.
Embodiment 3
A kind of soft damps silica gel padded coaming, its according to the mass fraction, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.6wt/%, liquid
The viscosity of state silica gel is 30000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 20000mPa s at 25 DEG C.
Embodiment 4
A kind of soft damps silica gel padded coaming, its in parts by weight, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.5wt/%, liquid
The viscosity of state silica gel is 70000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 40000mPa s at 25 DEG C,
The viscosity of methyl MQ resin is 500mpa s at 25 DEG C, and the viscosity of methyl vinyl MQ silicon resin is at 25 DEG C
500mpa·s.
Embodiment 5
A kind of soft damps silica gel padded coaming, its in parts by weight, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.6wt/%, liquid
The viscosity of state silica gel is 40000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 50000mPa s at 25 DEG C,
The viscosity of methyl MQ resin is 20000mpa s at 25 DEG C, and the viscosity of methyl vinyl MQ silicon resin is at 25 DEG C
20000mpa·s.
Embodiment 6
A kind of soft damps silica gel padded coaming, its in parts by weight, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.6wt/%, liquid
The viscosity of state silica gel is 30000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 20000mPa s at 25 DEG C,
The viscosity of methyl MQ resin is 3000mpa s at 25 DEG C, and the viscosity of methyl vinyl MQ silicon resin is at 25 DEG C
5000mpa·s.
Embodiment 7
A kind of soft damps silica gel padded coaming, according to the mass fraction, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.7wt/%, liquid
The viscosity of state silica gel is 60000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 40000mPa s at 25 DEG C,
The viscosity of methyl MQ resin is 10000mpa s at 25 DEG C, and the viscosity of methyl vinyl MQ silicon resin is at 25 DEG C
10000mpa s, the viscosity of phenyl vinyl MQ resin is 500mpa s at 25 DEG C.
Embodiment 8
A kind of soft damps silica gel padded coaming, according to the mass fraction, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.8wt/%, liquid
The viscosity of state silica gel is 40000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 100000mPa s at 25 DEG C,
The viscosity of methyl MQ resin is 20000mpa s at 25 DEG C, and the viscosity of methyl vinyl MQ silicon resin is at 25 DEG C
15000mpa s, the viscosity of phenyl vinyl MQ resin is 8000mpa s at 25 DEG C.
Embodiment 9
A kind of soft damps silica gel padded coaming, according to the mass fraction, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.6wt/%, liquid
The viscosity of state silica gel is 30000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 20000mPa s at 25 DEG C,
The viscosity of methyl MQ resin is 3000mpa s at 25 DEG C, and the viscosity of methyl vinyl MQ silicon resin is at 25 DEG C
5000mpa s, the viscosity of phenyl vinyl MQ silicone resin is 7000mpa s at 25 DEG C.
Embodiment 10
A kind of soft damps silica gel padded coaming, according to the mass fraction, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.6wt/%, liquid
The viscosity of state silica gel is 10000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 10000mPa s at 25 DEG C,
The viscosity of methyl MQ resin is 500mpa s at 25 DEG C, and the viscosity of methyl vinyl MQ silicon resin is at 25 DEG C
500mpa s, the viscosity of phenyl vinyl MQ resin is 500mpa s at 25 DEG C.The viscosity of allyl based polysiloxane be
10000mPa s at 25 DEG C.
Embodiment 11
A kind of soft damps silica gel padded coaming, according to the mass fraction, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.8wt/%, liquid
The viscosity of state silica gel is 40000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 100000mPa s at 25 DEG C,
The viscosity of methyl MQ resin is 20000mpa s at 25 DEG C, and the viscosity of methyl vinyl MQ silicon resin is at 25 DEG C
20000mpa s, the viscosity of phenyl vinyl MQ resin is 20000mpa s at 25 DEG C, the viscosity of allyl based polysiloxane
It is 100000mPa s at 25 DEG C.
Embodiment 12
A kind of soft damps silica gel padded coaming, according to the mass fraction, including following component：
In the present embodiment, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.6wt/%, liquid
The viscosity of state silica gel is 30000mPa s at 25 DEG C, and the viscosity of methyl vinyl silicon oil is 20000mPa s at 25 DEG C,
The viscosity of methyl MQ resin is 3000mpa s at 25 DEG C, and the viscosity of methyl vinyl MQ silicon resin is at 25 DEG C
5000mpa s, the viscosity of phenyl vinyl MQ silicone resin is 7000mpa s at 25 DEG C, the viscosity of allyl based polysiloxane
It is 50000mPa s at 25 DEG C.
The soft that embodiment 1-12 provides damps the preparation method of silica gel padded coaming, comprises the steps：
A () is by liquid-state silicon gel, methyl vinyl silicon oil, containing hydrogen silicone oil, platinum catalyst, inhibitor, optionally methyl MQ
The poly- silica of silicones, optionally methyl vinyl MQ silicon resin, optionally phenyl vinyl MQ silicone resin and optionally pi-allyl
Alkane adds in reaction vessel, forms raw mixture；
B described mixture is stirred under vacuum and heating condition by (), form precoat；
(c) by described precoat pass through calendering technology laminating on thin film, formed composite membrane；
D described composite membrane is carried out baking process by (), product.
In step (b), evacuation is carried out to above-mentioned reaction vessel, so that above-mentioned raw materials mixture is stirred under vacuum
0.2-0.5 hour, forms precoat；
In step (c), above-mentioned precoat is evenly applied to above-mentioned on thin film with precoat by calender, is formed
Composite membrane；
In step (d), above-mentioned composite membrane is put into ir tunnel stove in temperature 80-160 DEG C, toasts 5-15 minute, enter
Row winding, that is, make soft damping silica gel padded coaming.
The soft damping silica gel padded coaming that the present invention provides is when using it is only necessary to buffer soft damping silica gel
Material is peeled off can put in electronic equipment or precision instrument from thin film and is used.
The soft that the present invention provides damps the preparation method of silica gel padded coaming, and its process is simple, can it is easy to operate
Effectively reduce the working strength of operator.
In the present embodiment 1-12, the thin film being adopted is mylar, and the thickness of mylar is preferably 0.05-
0.1mm, most preferably 0.075mm.
Soft damping silica gel padded coaming prepared by embodiment 1-12 is carried out hardness test according to ASTM-2240,
Carry out elongation percentage and tensile strength test according to ASTM-412, carry out temperature resistant range test according to EN344, enter according to ASTM-149
Row breakdown voltage is tested, and test result is as shown in the table：
Table 1 soft damps silica gel padded coaming the performance test results tables of data
Silica gel padded coaming energy is damped by the soft that the test result of embodiment 1-12 can be seen that present invention preparation
Enough normally use in -40-150 DEG C, hardness can as little as 25 (shore A) below, breakdown voltage resistant higher than 15KV/mm, Neng Gouguang
General be applied to high-precision electronic machine and frivolous electronic equipment, play buffering and cushioning effect it is ensured that electronic machine or electricity
The normal use of sub- equipment.
By the contrast of embodiment 4-6 and embodiment 1-3, add methyl MQ silicones and methyl vinyl silicone
Elongation percentage and the tensile strength that soft damps silica gel padded coaming can be greatly improved, make percentage elongation reach more than 600%, resist
Tensile strength reaches more than 15MPa, simultaneously can significantly resistance to elevated temperatures so as to resistance to elevated temperatures is mentioned to 170 DEG C, lower temperature resistance
45 DEG C can be reduced to.
By implementing the contrast of 7-9 and embodiment 4-6, add phenyl vinyl MQ silicone resin can improve further low
Hardness damps elongation percentage and the tensile strength of silica gel padded coaming, makes the elongation percentage of padded coaming reach more than 695%, tension is strong
Degree reaches more than 16MPa, also lift resistance to elevated temperatures further so as to resistance to elevated temperatures reaches 185 DEG C, lower temperature resistance simultaneously
- 50 DEG C can be reduced to.
By the contrast of embodiment 10-12 and embodiment 7-9, add polyallyl silicones can improve further
Soft damps elongation percentage and the tensile strength of silica gel padded coaming, makes the elongation percentage of padded coaming reach more than 710%, tension
Intensity reaches more than 17MPa, makes the mechanical property of padded coaming more preferably, is also that resistance to elevated temperatures is promoted to 200 DEG C simultaneously, resistance to low
Warm nature can reach -55 DEG C.
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that without departing substantially from the present invention's
Many other changes can be made in the case of spirit and scope and change.It is, therefore, intended that in the following claims
Including all such changes and modifications belonging in the scope of the invention.
Claims (10)
1. a kind of soft damping silica gel padded coaming it is characterised in that：According to the mass fraction, including following component：
Wherein, liquid-state silicon gel is polydimethylsiloxane, and the hydrogen content in containing hydrogen silicone oil is 0.4-0.8wt/%.
2. soft according to claim 1 damping silica gel padded coaming it is characterised in that：According to the mass fraction, including
Following component：
3. soft according to claim 2 damping silica gel padded coaming it is characterised in that：According to the mass fraction, including
Following component：
4. according to any one of claim 1-3 soft damping silica gel padded coaming it is characterised in that：Also include alkene
Propyl group polysiloxanes, the mass fraction of described allyl based polysiloxane is 5-10 part.
5. according to any one of claim 1-3 soft damping silica gel padded coaming it is characterised in that：Described platinum
Catalyst is platinum black, the complex of the complex of platinum chloride, chloroplatinic acid and monohydric alcohol, chloroplatinic acid and olefines, platinum vinyl silicon
One of the chelate of oxygen alkane or acetoacetic acid platinum or at least two combination.
6. according to any one of claim 1-3 soft damping silica gel padded coaming it is characterised in that：Described suppression
Agent is ethynylcyclohexanol, cyclic vinyl radical siloxane, in tetravinyl tetramethyl-ring tetrasiloxane or benzotriazole a kind of or
At least two combination.
7. according to any one of claim 1-3 soft damping silica gel padded coaming it is characterised in that：Also include
Machine titanium compound, described organic titanic compound be tetrabutyl titanate, iso-butyl titanate, dimethoxy-methyl acetoacetic acid titanium, two
In isopropoxy titanium acetylacetone, diisopropoxy oacetic acid titanium or diisopropoxy methyl-acetoacetic acid titanium a kind of or
At least two combination.
8. a kind of any one of claim 1-7 soft damp silica gel padded coaming preparation method it is characterised in that：Including
Following steps：
A being used for any one of claim 1-7 is prepared each component mixing that soft damps silica gel padded coaming by (),
Form mixture；
B described mixture is stirred by () under vacuum, form precoat；
(c) by described precoat pass through calendering technology laminating on thin film, formed composite membrane；
D described composite membrane is carried out baking process by (), soft damping silica gel padded coaming.
9. soft according to claim 8 damp silica gel padded coaming preparation method it is characterised in that：Described thin film
Through coating bonding reinforcing agent or Corona discharge Treatment.
10. soft according to claim 8 damp silica gel padded coaming preparation method it is characterised in that：Described thin
Film is mylar, fluorine element mould release membrance or Kapton.
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| CN201610795217.5A CN106398219B (en) | 2016-08-31 | 2016-08-31 | Low-hardness damping silica gel buffer material and preparation method thereof |
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| CN201610795217.5A CN106398219B (en) | 2016-08-31 | 2016-08-31 | Low-hardness damping silica gel buffer material and preparation method thereof |
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| CN106398219B CN106398219B (en) | 2020-04-03 |
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| CN109553976A (en) * | 2017-09-26 | 2019-04-02 | 比亚迪股份有限公司 | A kind of elastic cement and preparation method thereof |
| CN109651823A (en) * | 2018-12-29 | 2019-04-19 | 重庆泰山电缆有限公司 | A kind of silicon rubber and its preparation method and application |
| CN110373029A (en) * | 2019-07-31 | 2019-10-25 | 杭州超德斯实业有限公司 | A kind of oxygen mask and its material used |
| WO2020132847A1 (en) * | 2018-12-25 | 2020-07-02 | Dow Silicones Corporation | Silicone rubber compositions |
| CN112622370A (en) * | 2020-12-25 | 2021-04-09 | 镇江中垒新材料科技有限公司 | Silica gel glass fiber cloth hot-pressing buffer material and preparation method thereof |
| CN114940824A (en) * | 2022-05-25 | 2022-08-26 | 歌尔股份有限公司 | Vibrating diaphragm of sound production device, preparation method of vibrating diaphragm and sound production device |
| CN117603660A (en) * | 2024-01-24 | 2024-02-27 | 北京泰派斯特电子技术有限公司 | Ultrathin breakdown voltage-resistant heat-conducting insulating gasket and preparation method thereof |
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| CN109553976A (en) * | 2017-09-26 | 2019-04-02 | 比亚迪股份有限公司 | A kind of elastic cement and preparation method thereof |
| WO2020132847A1 (en) * | 2018-12-25 | 2020-07-02 | Dow Silicones Corporation | Silicone rubber compositions |
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| CN109651823A (en) * | 2018-12-29 | 2019-04-19 | 重庆泰山电缆有限公司 | A kind of silicon rubber and its preparation method and application |
| CN110373029A (en) * | 2019-07-31 | 2019-10-25 | 杭州超德斯实业有限公司 | A kind of oxygen mask and its material used |
| CN112622370A (en) * | 2020-12-25 | 2021-04-09 | 镇江中垒新材料科技有限公司 | Silica gel glass fiber cloth hot-pressing buffer material and preparation method thereof |
| CN114940824A (en) * | 2022-05-25 | 2022-08-26 | 歌尔股份有限公司 | Vibrating diaphragm of sound production device, preparation method of vibrating diaphragm and sound production device |
| CN114940824B (en) * | 2022-05-25 | 2024-03-08 | 歌尔股份有限公司 | Vibrating diaphragm of sound generating device, manufacturing method of vibrating diaphragm and sound generating device |
| CN117603660A (en) * | 2024-01-24 | 2024-02-27 | 北京泰派斯特电子技术有限公司 | Ultrathin breakdown voltage-resistant heat-conducting insulating gasket and preparation method thereof |
| CN117603660B (en) * | 2024-01-24 | 2024-04-26 | 北京泰派斯特电子技术有限公司 | Ultrathin breakdown voltage-resistant heat-conducting insulating gasket and preparation method thereof |
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