CN107057367A - One kind electromagnetic shielding sealing article and its manufacture craft - Google Patents
One kind electromagnetic shielding sealing article and its manufacture craft Download PDFInfo
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- CN107057367A CN107057367A CN201710049907.0A CN201710049907A CN107057367A CN 107057367 A CN107057367 A CN 107057367A CN 201710049907 A CN201710049907 A CN 201710049907A CN 107057367 A CN107057367 A CN 107057367A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0053—Producing sealings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5425—Silicon-containing compounds containing oxygen containing at least one C=C bond
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/16—Solid spheres
- C08K7/18—Solid spheres inorganic
- C08K7/20—Glass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- Polymers & Plastics (AREA)
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Abstract
The invention discloses one kind electromagnetic shielding sealing article and its manufacture craft, belong to the technical field of electromagnetic shielding material.The present invention includes aluminum alloy framework, and aluminum alloy framework is provided with electromagnetic shield rubber material, and electromagnetic shield rubber material includes the component of following parts by weight：80 ~ 100 parts of methyl vinyl silicone rubber, 50 ~ 300 parts of silver-plated conductive filler, 2 ~ 8 parts of DCBP cream, 2 ~ 8 parts of coupling agent；Said components are combined with aluminum alloy framework, vulcanized and obtain by mixing, back mixing, slice.Manufacture craft of the present invention is simple, using cryogenic vulcanization, aluminum alloy framework is had no effect, the shore a hardness of the electromagnetic shield rubber material on gained sealing article surface is not higher than 70 degree, specific insulation is 0.005 ~ 0.01 Ω cm, and capability of electromagnetic shielding is good, has started the beginning of high electroconductive rubber material, the blank of high electroconductive rubber material has been filled up, electromagnetic shielding and the sealing property requirement of equipment is met.
Description
Technical field
The invention belongs to the technical field of electromagnetic shielding material, a kind of electromagnetic shielding sealing article and its making are particularly related to
Technique.
Background technology
In the electronic equipment of some specific uses, in order to prevent the interference of electromagnetic signal, the normal work of protection equipment,
Need to be electromagnetically shielded equipment.If this class of electronic devices is influenceed by same frequency electromagnetic waves in use, it is easy to produce
Raw signal is bad, the consequence such as cause the stability used to decline.But, in positions such as the interfaces of equipment, need to be mounted so that or
Dismounting, it is necessary to be electromagnetically shielded and sealed here.Existing standard practice is to be sealed in assembling using conductive rubber
Circle carry out electromagnetic shielding processing, however, due to artificial operational error and assembling gimmick the problems such as so that electromagnetic sealing circle easily goes out
Now assemble bad, so as to influence the shield effectiveness of product.
Rubber is the encapsulant generally used, because elastomeric material is the non-conductor of electricity, is led therefore, it is necessary to add
Electric filler meets the electric conductivity requirement of elastomeric material；Meanwhile, a large amount of additions of conductive filler can make sizing material hardness significantly on
Rise, elasticity reduction；Moreover, conductive filler is easily aoxidized, so that the shield effectiveness of material is big with the growth of use time
Under width；Its preparation technology is complicated, and damage is easily caused to framework material；Electronic equipment due to specific use etc. is to properties of product
And appearance requirement is high, it is impossible to meet the requirement to electronic equipment feasibility.
The content of the invention
The present invention provides a kind of electromagnetic shielding sealing article and its manufacture craft, solve be electromagnetically shielded in the prior art it is close
Envelope product elasticity is low, shield effectiveness is poor, assembling is bad and the problem of influence shield effectiveness.
A kind of electromagnetic shielding sealing article of the present invention, what it was mainly realized by the following technical programs：Including
Aluminum alloy framework, the aluminum alloy framework is provided with electromagnetic shield rubber material, and the electromagnetic shield rubber material includes following
The component of parts by weight：80 ~ 100 parts of methyl vinyl silicone rubber, 250 ~ 300 parts of silver-plated conductive filler, 2 ~ 8 parts of DCBP cream, coupling
2 ~ 8 parts of agent.
The present invention is used as material substrate by silicon rubber, and this methyl vinyl silicone rubber introduces second in the side chain of silicon rubber
Alkenyl and methyl, improve the characteristic of silicon rubber, are soft high maximum elongation silicon rubber, and add silver-plated conductive filler,
In the presence of DCBP cream vulcanizing agent and coupling agent, it is combined with aluminum alloy framework, obtains extraordinary electromagnetic shield rubber sealing
Product；The elongation at break of the electromagnetic shield rubber material on gained sealing article surface is not less than 500%, and specific insulation can be with
Reach it is very low, with excellent capability of electromagnetic shielding；Its shore a hardness is not higher than 70 degree, and specific insulation can reach 0.005
Ω cm, maintain good elasticity, are electromagnetically shielded long lifespan, and using effect is good.
As a kind of preferred embodiment, the silver-plated conductive filler is silver plated metals, silver-plated nonmetallic, silver-plated oxidation
Any one or a few in thing.Silver plated metals include silver-plated copper powder, silvered aluminum powder and silver-plated nickel powder etc., silver-plated nonmetallic bag
Include silvered glass, silver plating ceramic, silver-plated carbon black, silvering graphite and silvered mica etc., plating silver oxide include silver-plated tin ash,
Plate Ag-ZnO and silver-plated titanium dioxide etc..These conductive filler surfaces are coated with silver, and center is electric conductor, meanwhile, its particle point
Dissipate property good, can be well dispersed in methyl vinyl silicone rubber, gained electromagnetic shield rubber material is with good electricity
Also there is good electric conductivity while magnetic shield performance.
As a kind of preferred embodiment, silver-colored content is 10 ~ 40%, the plating in the silver-plated conductive filler
The particle size of silver-colored conductive filler is 50 ~ 200nm.This silver-plated conductive filler is suitable as conductive filler particle size, can be with
Preferably merged with silicon rubber；Electroplate is protected, it is not easy to aoxidized, so that the shield effectiveness of material significantly extends.
As a kind of preferred embodiment, 2, the 4- dichloro-benzoyls content in the DCBP cream is 30 ~ 70%.It is this
DCBP cream decomposition temperatures are low, and decomposition rate is fast；In hot-air cure, stomata will not be produced；Using DCBP cream as vulcanizing agent,
Its vulcanization effect is good.
As a kind of preferred embodiment, the coupling agent is VTES coupling agent.This coupling
Agent one side and methyl vinyl silicone rubber copolymerization, can be on the other hand filling out for methyl vinyl silicone rubber as special silicone rubber
Agent is filled, strengthens the sealing property of electromagnetic shield rubber.
As a kind of preferred embodiment, the thickness of the electromagnetic shield rubber material is 2 ~ 5mm.This electromagnetic shielding
Sealing article is what special silicone rubber encapsulant was composited with aluminum alloy framework, does not produce any shadow to aluminum alloy framework
Ring, and it does not produce pollution to surface, shore a hardness≤70 degree meet the requirement of product electromagnetic shielding and sealing property.
A kind of manufacture craft of electromagnetic shielding sealing article of the present invention, it is mainly subject to reality by the following technical programs
Existing：Comprise the following steps：1）Methyl vinyl silicone rubber is taken, DCBP cream is added, silicon rubber gross rubber is made in mixing；2）
Step 1）In gained silicon rubber gross rubber, silver-plated conductive filler is slowly added to, the back mixing of falling glue is uniform to color, obtains just sizing material；3）
By step 2）Gained just sizing material back mixing, slice, cut-parts obtain semi-finished product；4）Aluminum alloy framework is taken, is carried out using organic solvent clear
Wash, spraying binder, obtain skeleton A；5）By step 3）Gained semi-finished product are put into the die cavity of mould, by step 3）Gained skeleton
A loads the upper mould of mould, is caught in middle mould, and upper mould, middle mould are closed on lower mould, and matched moulds vulcanization, curing temperature is 60 ~ 100 DEG C, sulphur
Change pressure is 2 ~ 3MPa, and cure time is 15 ~ 20min, obtains finished product；6）Die sinking, takes out finished product, and post processing obtains sealing article.
The present invention adds silver-plated conductive filler in special silicone rubber material matrix, is vulcanized using low temperature, passed through
The addition of DCBP cream vulcanizing agent and coupling agent, shore a hardness≤70 degree of the electromagnetic shield rubber material of preparation, specific insulation
Between 0.005 ~ 0.01 Ω cm, with good elasticity and capability of electromagnetic shielding, capability of electromagnetic shielding is good, meets electricity
The sealing property requirement of magnetic shielding material；This cryogenic vulcanization technique and electromagnetic shield rubber material, will not be to aluminum alloy framework
Any influence is produced, nor pollution can be produced to its surface, cryogenic vulcanization make good progress, and effect is good；The making of the present invention
Technique is simple, and operation temperature is low, and energy consumption is small, and production efficiency is high, it is easy to accomplish industrialization.
It is used as a kind of preferred embodiment, the step 1）In, the temperature of mixing is 30 ~ 40 DEG C, and after mixing, room temperature is stopped
Put 2 ~ 6h；The step 2）In, the temperature of back mixing is 30 ~ 40 DEG C.The present invention is kneaded and back mixing temperature is between 30 ~ 40 DEG C,
Temperature is low, is easy to control.
It is used as a kind of preferred embodiment, the step 4）In, organic solvent is any in ethyl ester, alcohol or gasoline
One kind, adhesive is sprayed 2 ~ 5 times.Aluminum alloy framework is cleaned using organic solvent, to remove the impurity on its surface；Pass through
Adhesive is that above-mentioned rubber components are fused to the surface of aluminum alloy framework well, and has ensured the uniformity of adhesive.
It is used as a kind of preferred embodiment, the step 6）In, before die sinking, it is vented 2 ~ 5 times；Post-process and smeared to use
Cloth dips volatile organic solvent cleaning finished product, is cleared up using compressed air, removes finished surface impurity and dirt.Using volatilization
Property organic solvent finished product is cleaned, and it is purged using compressed air, with ensure finished surface cleannes and
Slickness.
The beneficial effects of the invention are as follows：The present invention is used as material substrate by methyl vinyl silicone rubber, adds silver-plated lead
Electric filler, in the presence of DCBP cream vulcanizing agent and coupling agent, is combined with aluminum alloy framework, obtains extraordinary electromagnetic shielding rubber
Glue sealing article；The elongation at break of the electromagnetic shield rubber material on gained sealing article surface is big, and specific insulation can reach
To very low, with excellent capability of electromagnetic shielding；Its shore a hardness is not higher than 70 degree, and specific insulation is not higher than 0.01 Ω
Cm, elongation at break is not less than 500%, and capability of electromagnetic shielding is good, is electromagnetically shielded long lifespan, maintains good elasticity；Make work
Skill is simple, and operation temperature is low, will not produce any influence to aluminum alloy framework, also aluminum alloy framework surface will not be produced dirty
Dye, energy consumption is small, and production efficiency is high, it is easy to accomplish industrialization, has started the beginning of high electroconductive rubber material, has filled up highly conductive rubber
The blank of glue material, meets electromagnetic shielding and the sealing property requirement of equipment.
Embodiment
Technical scheme is clearly and completely described below in conjunction with the specific embodiment of the present invention, shown
So, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Embodiment one
A kind of manufacture craft of electromagnetic shielding sealing article of the present invention, comprises the following steps：
1）Raw material is weighed according to following parts by weight：100 parts of methyl vinyl silicone rubber, 300 parts of silvered glass ball, 4 parts of DCBP cream,
4 parts of coupling agent；
2）Methyl vinyl silicone rubber is taken, DCBP cream is added, is kneaded in mill, prepare silicon rubber gross rubber；
3）Mill is adjusted to have appropriate remaining glue on appropriate roll spacing, rubber bag roller, regulating fender maintaining roller, silver-plated glass is slowly added to
Glass ball, the continuous back mixing of falling glue, until sizing material color is uniform, is prepared into just sizing material；
4）By above-mentioned just sizing material back mixing, slice, cut-parts（Adjustment cut-parts width is required according to product）, semi-finished product are made；
5）Aluminum alloy framework is taken, at its electromagnetic shield rubber material to be composite, is cleared up using ethyl ester, spraying frock spraying is put into
Adhesive, prepares skeleton A；
6）Default curing parameter, curing temperature is 90 DEG C, and sulfide stress is 3MPa, and cure time is 20min, and vulcanizer reaches pre-
If after temperature, according to requiring above-mentioned semi-finished product being put into the die cavity of mould, above-mentioned aluminum alloy framework A is loaded into the upper of mould
Mould, is caught in middle mould, and upper mould is closed on lower mould with the middle mould with skeleton, is put into behind flat board centre, matched moulds vulcanization；
7）Exhaust 5 times, die sinking, mould and finished product in taking-up, place to go overlap dips alcohol cleaning finished product using rag, uses compression
Air is cleared up, and is removed surface impurity and dirt, is obtained sealing article.
Embodiment two
1）Raw material is weighed according to following parts by weight：80 parts of methyl vinyl silicone rubber, silver-plated 250 parts of conducting powder, 2 parts of DCBP cream,
The content of 2,4- dichloro-benzoyls is 30% in 2 parts of coupling agent, DCBP cream, and the particle size of silver-plated conducting powder is 50nm；
2）Silicon rubber is taken, DCBP cream is added, is kneaded in mill, after mixing, room temperature parks 2h, prepares mixing silicon rubber
Glue；
3）Mill is adjusted to have appropriate remaining glue on appropriate roll spacing, rubber bag roller, regulating fender maintaining roller, silver-plated lead is slowly added to
Electric powder, the continuous back mixing of falling glue, until sizing material color is uniform, is prepared into just sizing material；
4）By above-mentioned just sizing material back mixing, slice, cut-parts（Adjustment cut-parts width is required according to product）, semi-finished product are made；
5）Aluminum alloy framework is taken, at its electromagnetic shield rubber material to be composite, is cleared up using alcohol, spraying frock spraying is put into
Adhesive 2 times, prepares skeleton A；
6）Default curing parameter, curing temperature is 60 DEG C, and sulfide stress is 2MPa, and cure time is 15min, and vulcanizer reaches pre-
If above-mentioned aluminum alloy framework A to be loaded to the upper mould of mould according to requiring above-mentioned semi-finished product being put into the die cavity of mould after temperature,
Middle mould is caught in, upper mould is closed on lower mould with the middle mould with skeleton, is put into behind flat board centre, matched moulds vulcanization；
7）Exhaust 2 times, die sinking, mould and finished product in taking-up, place to go overlap dips alcohol cleaning finished product using rag, uses compression
Air is cleared up, and is removed surface impurity and dirt, is obtained sealing article.
Embodiment three
1）Raw material is weighed according to following parts by weight：90 parts of methyl vinyl silicone rubber, 260 parts of silvered aluminum powder, 8 parts of DCBP cream, second
8 parts of alkenyl triethoxysilane coupling agent, silver-colored content is 40% in silvered aluminum powder, and the particle size of silvered aluminum powder is 100nm；
2）Methyl vinyl silicone rubber is taken, mill is opened, it is 40 DEG C to control roll temperature, after adding DCBP cream after bag roller, is kneaded,
After mixing, room temperature parks 6h, prepares silicon rubber gross rubber；
3）Mill is adjusted to have appropriate remaining glue on appropriate roll spacing, rubber bag roller, regulating fender maintaining roller, silver coated aluminum is slowly added to
Powder, control temperature is at 40 DEG C, the continuous back mixing of falling glue, until sizing material color is uniform, is prepared into just sizing material；
4）By above-mentioned just sizing material back mixing, slice, cut-parts（Adjustment cut-parts width is required according to product）, semi-finished product are made；
5）Aluminum alloy framework is taken, at its electromagnetic shield rubber material to be composite, is cleared up using gasoline, spraying frock spraying is put into
Adhesive 5 times, prepares skeleton A；
6）Default curing parameter, curing temperature is 100 DEG C, and sulfide stress is 2.5MPa, and cure time is 17min, and vulcanizer reaches
According to requiring above-mentioned semi-finished product being put into the die cavity of mould after to preset temperature, above-mentioned aluminum alloy framework A is loaded into mould
Upper mould, is caught in middle mould, and upper mould is closed on lower mould with the middle mould with skeleton, is put into behind flat board centre, matched moulds vulcanization；
7）Die sinking, takes out finished product, and post processing obtains sealing article.
Example IV
1）Raw material is weighed according to following parts by weight：85 parts of methyl vinyl silicone rubber, 280 parts of Ag-ZnO of plating, 3 parts of DCBP cream,
Silver-colored content is 2,4- dichloro-benzoyls in 10%, DCBP cream in 3 parts of VTES coupling agent, plating Ag-ZnO
Content be 50%, plating Ag-ZnO particle size be 200nm；
2）Methyl vinyl silicone rubber is taken, DCBP cream is added, is kneaded in mill, after mixing, room temperature parks 4h, is prepared
Silicon rubber gross rubber；
3）Mill is adjusted to have appropriate remaining glue on appropriate roll spacing, rubber bag roller, regulating fender maintaining roller, silver-plated oxygen is slowly added to
Change zinc, the continuous back mixing of falling glue, until sizing material color is uniform, be prepared into just sizing material；
4）By above-mentioned just sizing material back mixing, slice, cut-parts（Adjustment cut-parts width is required according to product）, semi-finished product are made；
5）Aluminum alloy framework is taken, at its electromagnetic shield rubber material to be composite, is cleared up using ethyl acetate, is put into spraying frock
Spraying binder 3 times, prepares skeleton A；
6）Default curing parameter, curing temperature is 80 DEG C, and sulfide stress is 3MPa, and cure time is 18min, and vulcanizer reaches pre-
If above-mentioned aluminum alloy framework A to be loaded to the upper mould of mould according to requiring above-mentioned semi-finished product being put into the die cavity of mould after temperature,
Middle mould is caught in, upper mould is closed on lower mould with the middle mould with skeleton, is put into behind flat board centre, matched moulds vulcanization；
7）Exhaust 4 times, die sinking, mould and finished product in taking-up, place to go overlap dips alcohol cleaning finished product using rag, uses compression
Air is cleared up, and is removed surface impurity and dirt, is obtained sealing article.
Embodiment five
1）Raw material is weighed according to following parts by weight：95 parts of methyl vinyl silicone rubber, 290 parts of silvered glass ball, 5 parts of DCBP cream,
The content of 2,4- dichloro-benzoyls is 70% in 5 parts of VTES coupling agent, DCBP cream；
2）Methyl vinyl silicone rubber is taken, mill is opened, it is 30 DEG C to control roll temperature, after adding DCBP cream after bag roller, is kneaded,
Prepare silicon rubber gross rubber；
3）Mill is adjusted to have appropriate remaining glue on appropriate roll spacing, rubber bag roller, regulating fender maintaining roller, silver-plated glass is slowly added to
Glass ball, control temperature is at 30 DEG C, the continuous back mixing of falling glue, until sizing material color is uniform, is prepared into just sizing material；
4）By above-mentioned just sizing material back mixing, slice, cut-parts（Adjustment cut-parts width is required according to product）, semi-finished product are made；
5）Aluminum alloy framework is taken, at its electromagnetic shield rubber material to be composite, is cleared up using ethyl acetate, is put into spraying frock
Spraying binder 4 times, prepares skeleton A；
6）Default curing parameter, curing temperature is 70 DEG C, and sulfide stress is 2MPa, and cure time is 16min, and vulcanizer reaches pre-
If above-mentioned aluminum alloy framework A to be loaded to the upper mould of mould according to requiring above-mentioned semi-finished product being put into the die cavity of mould after temperature,
Middle mould is caught in, upper mould is closed on lower mould with the middle mould with skeleton, is put into behind flat board centre, matched moulds vulcanization；
7）Exhaust 4 times, die sinking, mould and finished product in taking-up, place to go overlap dips alcohol cleaning finished product using rag, uses compression
Air is cleared up, and is removed surface impurity and dirt, is obtained sealing article.
Electromagnetic shielding caulking gum material in the embodiment of the present invention one to the five kinds of sealing articles of gained of embodiment five is entered
Row performance detection, wherein, shore a hardness is carried out according to method as defined in GB/T531.1-2008, and tensile strength is according to GB/
Method as defined in T528-2009 is carried out, and elongation rate of tensile failure is carried out according to method as defined in ISO527-2012, and specific insulation is pressed
Carried out according to method as defined in GB/T15662-1995, capability of electromagnetic shielding is carried out according to method as defined in GJB 6190-2008, and
The capability of electromagnetic shielding under 0.2MHz, 100MHz, 500MHz, 2000MHz and 10000MHz is determined respectively, and uses identical
The electromagnetic shielding seal sizing material of method under the same conditions to certain commercially available external import（Referred to as external sizing material）Also Shao is carried out
The performance of the five big indexs such as the capability of electromagnetic shielding under the conditions of that A hardness, tensile strength, elongation, specific insulation and 5 is surveyed
Examination, testing result is as shown in table 1.
The performance test results of the electromagnetic shield rubber material of table 1
As can be seen from Table 1, hardness and state in the performance of the electromagnetic shielding caulking gum material on aluminum alloy framework of the invention
Quite, its shore a hardness is not higher than 70 degree to outer existing sizing material, can reach 60 degree；Its tensile strength also with external sizing material phase
When in 1.3MPa or so；But, the elongation at break of the electromagnetic shielding caulking gum material on aluminum alloy framework of the invention
It is not less than 500%, is 2-6 times of external sizing material more than 600%, this is substantially better than external sizing material, can plays close well
Sealing property；Meanwhile, the specific insulation for being electromagnetically shielded caulking gum material≤0.01 Ω cm, and 0.005 of the invention
Within the scope of ~ 0.007 Ω cm, the level of external sizing material has been reached.In addition, the electromagnetic shielding on the aluminum alloy framework of the present invention
Capability of electromagnetic shielding of the caulking gum material under 0.2MHz reaches 70dB or so, better than external sizing material；Electricity under 100MHz
Magnetic shield performance reaches 104dB or so, better than external sizing material；Capability of electromagnetic shielding under 500MHz reaches 112dB or so, excellent
In external sizing material；Capability of electromagnetic shielding under 2000MHz reaches 101dB or so, better than external sizing material；Under 10000MHz
Capability of electromagnetic shielding reaches 95dB or so, better than external sizing material；Therefore, the capability of electromagnetic shielding on aluminum alloy framework of the invention
Whether external sizing material is significantly better than that under low hertz or under high hertz, on the aluminum alloy framework of this explanation present invention
Electromagnetic shielding caulking gum material has at home and abroad reached leading position.
The beneficial effects of the invention are as follows：The present invention is used as material substrate by methyl vinyl silicone rubber, adds silver-plated lead
Electric filler, in the presence of DCBP cream vulcanizing agent and coupling agent, is combined with aluminum alloy framework, obtains extraordinary electromagnetic shielding rubber
Glue sealing article；The elongation at break of the electromagnetic shield rubber material on gained sealing article surface is big, and specific insulation can reach
To very low, with excellent capability of electromagnetic shielding；Its shore a hardness is not higher than 70 degree, and specific insulation is not higher than 0.01 Ω
Cm, elongation at break is not less than 500%, and capability of electromagnetic shielding is good, is electromagnetically shielded long lifespan, maintains good elasticity；Make work
Skill is simple, and operation temperature is low, will not produce any influence to aluminum alloy framework, also aluminum alloy framework surface will not be produced dirty
Dye, energy consumption is small, and production efficiency is high, it is easy to accomplish industrialization, has started the beginning of high electroconductive rubber material, has filled up highly conductive rubber
The blank of glue material, meets electromagnetic shielding and the sealing property requirement of equipment.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. one kind electromagnetic shielding sealing article, it is characterised in that：Including aluminum alloy framework, the aluminum alloy framework is provided with electromagnetism
Screen rubber material, the electromagnetic shield rubber material includes the component of following parts by weight：
80 ~ 100 parts of methyl vinyl silicone rubber, 250 ~ 300 parts of silver-plated conductive filler, 2 ~ 8 parts of DCBP cream, 2 ~ 8 parts of coupling agent.
2. electromagnetic shielding sealing article according to claim 1, it is characterised in that：
The silver-plated conductive filler is any one or a few in silver plated metals, silver-plated nonmetallic, plating silver oxide.
3. electromagnetic shielding sealing article according to claim 1, it is characterised in that：
Silver-colored content is 10 ~ 40% in the silver-plated conductive filler, and the granularity of the silver-plated conductive filler is 50 ~ 200nm.
4. electromagnetic shielding sealing article according to claim 1, it is characterised in that：
The content of 2,4 dichloro benzene formyl is 30 ~ 70% in the DCBP cream.
5. electromagnetic shielding sealing article according to claim 1, it is characterised in that：
The coupling agent is VTES coupling agent.
6. electromagnetic shielding sealing article according to claim 1, it is characterised in that：
The thickness of the electromagnetic shield rubber material is 2 ~ 5mm.
7. the manufacture craft of the electromagnetic shielding sealing article according to claim 1 ~ 6 any one, it is characterised in that including
Following steps：
1）Methyl vinyl silicone rubber is taken, DCBP cream is added, silicon rubber gross rubber is made in mixing；
2）In step 1）In gained silicon rubber gross rubber, silver-plated conductive filler is slowly added to, the back mixing of falling glue is uniform to color, obtains
First sizing material；
3）By step 2）Gained just sizing material back mixing, slice, cut-parts obtain semi-finished product；
4）Aluminum alloy framework is taken, is cleaned using organic solvent, spraying binder obtains skeleton A；
5）By step 3）Gained semi-finished product are put into the die cavity of mould, by step 3）Gained skeleton A loads the upper mould of mould, is caught in
Middle mould, upper mould, middle mould are closed on lower mould, and matched moulds vulcanization, curing temperature is 60 ~ 100 DEG C, and sulfide stress is 2 ~ 3MPa, vulcanization
Time is 15 ~ 20min, obtains finished product；
6）Die sinking, takes out finished product, and post processing obtains sealing article.
8. the manufacture craft of electromagnetic shielding sealing article according to claim 7, it is characterised in that：
The step 1）In, the temperature of mixing is 30 ~ 40 DEG C, and after mixing, room temperature parks 2 ~ 6h；The step 2）In, back mixing
Temperature is 30 ~ 40 DEG C.
9. the manufacture craft of electromagnetic shielding sealing article according to claim 7, it is characterised in that：
The step 4）In, organic solvent is any one in ethyl ester, alcohol or gasoline, and adhesive is sprayed 2 ~ 5 times.
10. the manufacture craft of electromagnetic shielding sealing article according to claim 7, it is characterised in that：
The step 6）In, before die sinking, it is vented 2 ~ 5 times；Post-process and cleared up into dip volatile organic solvent using rag
Product, are cleared up using compressed air, remove finished surface impurity and dirt.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108530898A (en) * | 2018-03-09 | 2018-09-14 | 中国电子科技集团公司第三十三研究所 | A kind of tear-proof high-flexibility conductive rubber and preparation method thereof |
| CN109346269A (en) * | 2018-10-18 | 2019-02-15 | 广州源贸易有限公司 | Transformer box used for railway communication signals |
| CN109370226A (en) * | 2018-10-24 | 2019-02-22 | 嘉兴市海德姆智能电气有限公司 | A kind of preparation method of electromagnetic shielding material |
| CN109486191A (en) * | 2018-09-04 | 2019-03-19 | 苏州泰吉诺新材料科技有限公司 | A kind of thermally conductive electromagnetic shielding material of the high-performance of room temperature curing and its production technology |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020049274A1 (en) * | 2000-08-17 | 2002-04-25 | Syuuichi Azechi | Electrically conductive silicone rubber composition |
| US20020164476A1 (en) * | 1996-08-18 | 2002-11-07 | Helmut Kahl | Conductive sealing material, profiled sealing member, method |
| EP1850650A1 (en) * | 2006-04-27 | 2007-10-31 | Nitto Denko Corporation | Structure having a characteristic of conducting or absorbing electromagnetic waves |
| CN101381592A (en) * | 2008-10-16 | 2009-03-11 | 广东恒大新材料科技有限公司 | Sealant composition with electro-magnetic screen function |
| CN102134399A (en) * | 2011-05-06 | 2011-07-27 | 北京化工大学 | Flaming retarding highly conductive silicon rubber composite material and preparation method thereof |
| CN102329560A (en) * | 2010-07-14 | 2012-01-25 | 中化化工科学技术研究总院 | Novel electromagnetic shielding paint for surface of silicone rubber |
| CN105131612A (en) * | 2015-09-25 | 2015-12-09 | 深圳市博恩实业有限公司 | Self-adhesive conductive silicone rubber electromagnetic shielding material |
| CN105542474A (en) * | 2016-03-15 | 2016-05-04 | 王雷 | Silver-coated aluminum conductive rubber sheet and preparing method thereof |
| CN105907361A (en) * | 2016-07-11 | 2016-08-31 | 深圳市鑫东邦科技有限公司 | Single-component room-temperature vulcanization conductive silica gel and preparation method thereof |
-
2017
- 2017-01-23 CN CN201710049907.0A patent/CN107057367B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020164476A1 (en) * | 1996-08-18 | 2002-11-07 | Helmut Kahl | Conductive sealing material, profiled sealing member, method |
| US20020049274A1 (en) * | 2000-08-17 | 2002-04-25 | Syuuichi Azechi | Electrically conductive silicone rubber composition |
| EP1850650A1 (en) * | 2006-04-27 | 2007-10-31 | Nitto Denko Corporation | Structure having a characteristic of conducting or absorbing electromagnetic waves |
| CN101381592A (en) * | 2008-10-16 | 2009-03-11 | 广东恒大新材料科技有限公司 | Sealant composition with electro-magnetic screen function |
| CN102329560A (en) * | 2010-07-14 | 2012-01-25 | 中化化工科学技术研究总院 | Novel electromagnetic shielding paint for surface of silicone rubber |
| CN102134399A (en) * | 2011-05-06 | 2011-07-27 | 北京化工大学 | Flaming retarding highly conductive silicon rubber composite material and preparation method thereof |
| CN105131612A (en) * | 2015-09-25 | 2015-12-09 | 深圳市博恩实业有限公司 | Self-adhesive conductive silicone rubber electromagnetic shielding material |
| CN105542474A (en) * | 2016-03-15 | 2016-05-04 | 王雷 | Silver-coated aluminum conductive rubber sheet and preparing method thereof |
| CN105907361A (en) * | 2016-07-11 | 2016-08-31 | 深圳市鑫东邦科技有限公司 | Single-component room-temperature vulcanization conductive silica gel and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| 丁彤等编写: "《中国化工产品大全-上》", 31 October 1994, 化学工业出版社 * |
| 刘庆杰等: "波导连接用高导电率橡胶垫片的研制", 《波导连接用高导电率橡胶垫片的研制》 * |
| 孙建生等: "偶联剂改性镀银铝粉填充型电磁屏蔽硅橡胶的性能研究 ", 《橡胶工业》 * |
| 谢遂志: "《橡胶工业手册》", 31 December 1989, 化学工业出版社 * |
| 韩长日: "《橡塑助剂生产工艺与技术》", 30 November 2015, 科学技术文献出版社 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108530898A (en) * | 2018-03-09 | 2018-09-14 | 中国电子科技集团公司第三十三研究所 | A kind of tear-proof high-flexibility conductive rubber and preparation method thereof |
| CN108530898B (en) * | 2018-03-09 | 2021-07-09 | 中国电子科技集团公司第三十三研究所 | Tear-resistant high-flexibility conductive rubber and preparation method thereof |
| CN109486191A (en) * | 2018-09-04 | 2019-03-19 | 苏州泰吉诺新材料科技有限公司 | A kind of thermally conductive electromagnetic shielding material of the high-performance of room temperature curing and its production technology |
| CN109346269A (en) * | 2018-10-18 | 2019-02-15 | 广州源贸易有限公司 | Transformer box used for railway communication signals |
| CN109370226A (en) * | 2018-10-24 | 2019-02-22 | 嘉兴市海德姆智能电气有限公司 | A kind of preparation method of electromagnetic shielding material |
| CN109648877A (en) * | 2018-10-31 | 2019-04-19 | 广西新三达橡胶科技有限公司 | A kind of production method of the vehicle intercooler water chamber of integrated seal silica gel strip |
| CN111607232A (en) * | 2020-04-17 | 2020-09-01 | 平湖阿莱德实业有限公司 | Composite part with IP sealing function and EMI function and forming method thereof |
| CN111995982A (en) * | 2020-07-22 | 2020-11-27 | 深圳市飞荣达科技股份有限公司 | Bi-component silver-plated graphite conductive adhesive and preparation method thereof |
| CN114605834A (en) * | 2020-12-09 | 2022-06-10 | 北京橡胶工业研究设计院有限公司 | High-conductivity rubber material with electromagnetic shielding function and manufacturing method thereof |
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