CN106751861A - A kind of low-density silastic material easy to wear and preparation method thereof - Google Patents
A kind of low-density silastic material easy to wear and preparation method thereof Download PDFInfo
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- CN106751861A CN106751861A CN201611190365.0A CN201611190365A CN106751861A CN 106751861 A CN106751861 A CN 106751861A CN 201611190365 A CN201611190365 A CN 201611190365A CN 106751861 A CN106751861 A CN 106751861A
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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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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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- Polymers & Plastics (AREA)
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Abstract
The present invention relates to a kind of low-density silastic material easy to wear, its component includes：Methyl vinyl silicone rubber material, liquid silicon rubber material, low-density functional stuffing, colouring agent and other auxiliary agents；Described low-density functional stuffing includes hollow glass micropearl；Described colouring agent includes spray carbon black；Other described auxiliary agents include 2,5 dimethyl 2,5 pairs（T-butylperoxy）Hexane.The invention also discloses a kind of preparation method of low-density silastic material easy to wear, mainly include five steps.The present invention is applied to the engine field of sealing technology of aircraft industry, and its protection to engine rotation position is more reliable, and protection rotary part is from abrasion, increasing service life of engine.
Description
Technical field
The invention belongs to silastic material field, and in particular to a kind of low-density silastic material easy to wear and its preparation side
Method.
Background technology
Developing rapidly for aircraft industry proposes higher and higher requirement to aero-engine, high thrust, high efficiency, low
Oil consumption turned into engine design and manufacture overall goal, reduce compressor, between turbine tip and casing gap gas
Technology obturage just as the important means for improving engine performance in road.Therefore, Aeroengine Design and manufacture when blade tip with
The gap of 2~3mm is reserved between casing.Excessive gap will be such that gas largely leaks, and cause engine efficiency to drop
It is low, and material of obturaging will be helpful to for gap to be reduced to bottom line.
Traditional material category mainly metal coating layer material of obturaging, metal coating is glued by the way of spraying with casing
Connect, technological parameter requirement is higher；Metal coating is at aspects such as institutional framework, porosity uniformity and adhesions in spraying coating process mistake
Control is difficult in journey, in coating when using, the problems such as often disbonding occur, a certain degree of damage is caused to engine,
In particular with the development of large-bypass-ratio engine, Fan/Compressor Operated part seal coating due to size it is larger, to spraying
Technique proposes requirement higher, therefore metal seal coating can not fully meet large-bypass-ratio engine long-life and high reliability
Requirement.
The obturage appearance of material of silicon rubber solves this problem.By silicon rubber obturage design of material into engine blower
Shape and size that casing matches, it is by the physics chemical action of adhesive, silicon rubber material of obturaging is firm with casing
It is bonded so that one layer of easy abrasive sealing material is formed between engine rotation part and casing, forms a kind of abradable close
Envelope, when engine rotation part and low-density silastic material easy to wear are scraped, low-density silastic material easy to wear
Tiny glue foam is worn away into first, protects rotatable parts not damage, maintain minimum gas circuit between rotatable parts and stationary parts
Gap, improves the whole efficiency of engine.
The content of the invention
To solve existing technical problem, it is an object of the invention to provide one kind by formulation optimization, coordinate low close
The silastic material with low-density characteristic easy to wear spent packing material and other auxiliary agents and prepare, has filled up domestic blank.
To reach above-mentioned purpose, the technical scheme is that：
A kind of low-density silastic material easy to wear, its component includes：Methyl vinyl silicone rubber material, liquid silastic material
Material, low-density functional stuffing, colouring agent and other auxiliary agents；
The mass parts scope of its each component is as follows：
19.7 parts~19.8 parts of methyl vinyl silicone rubber material
19.7 parts~19.8 parts of liquid silicon rubber material
59.3 parts~59.4 parts of low-density functional stuffing
0.9 part~1 part of colouring agent
0.4 part~0.5 part of other auxiliary agents；
Described low-density functional stuffing includes hollow glass micropearl；
Described colouring agent includes spray carbon black；
Other described auxiliary agents include 2,5- dimethyl -2, and 5- is double（T-butylperoxy）Hexane.
A kind of preparation method of low-density silastic material easy to wear, comprises the following steps：
Step one：Using two-roll mill, 3~5mm is transferred in roll spacing, methyl vinyl silicone rubber material is added under certain roller temperature
Material；
Step 2：Two-roll mill sequentially adds low-density functional stuffing, colouring agent, other auxiliary agents, and mixing is mixed, bottom sheet；
Step 3：Using silastic material kneader, liquid silicon rubber material, low-density are sequentially added at a temperature of certain material chamber
Functional stuffing, mixing is uniform, blanking；
Step 4：Using two-roll mill, 3~5mm is transferred in roll spacing, sequentially added in proportion under certain roller temperature step 2,
The premixing glue that step 3 is made, mixing is uniform, Bao Tong, bottom sheet；
Step 5：After bottom sheet parks 24 hours, vulcanized with vulcanizing press and be made low-density silastic material sample easy to wear.
Methyl vinyl silicone rubber material in the step one, its quality is 50 grams；
Low-density functional stuffing in the step 2 is hollow glass micropearl, and its quality is 50 grams；Colouring agent is spray carbon black,
Its quality is 2.5 grams；Other auxiliary agents are 2,5- dimethyl -2, and 5- is double（T-butylperoxy）Hexane, its quality is 0.25 gram；
Liquid silicon rubber material in the step 3, its quality is 50 grams；Low-density functional stuffing is hollow glass micropearl, its
Quality is 100 grams.
Roller temperature in the step one is 0~50 DEG C；
Mixing time in the step 2 is 30 minutes；
Material chamber temperature in the step 3 is 0~60 DEG C；Mixing time is 20 minutes；
Roller temperature in the step 4 is 0~50 DEG C；Feed ratio is step 2 gained elastomeric compound：Step 3 gained elastomeric compound=
1:1；Mixing time is 20 minutes；Thin logical number of times is 3 times；
The vulcanization of the step 5 middle plateform vulcanizer is to vulcanize 20 minutes under the conditions of 10MPa, 160 DEG C.
The beneficial effects of the invention are as follows：
For in terms of the material property：
1. silastic material density of the invention is low.It is that one kind is small as the hollow glass micropearl material of filler, it is hollow
Ball sprills, main component is silica, and inside is full of inert gas, small with density, the features such as good dispersion, silicon rubber
Glue material by a large amount of filling hollow glass micropearls, can lightening material weight significantly, so as to reduce overall engine mass, carry
The efficiency of engine high.
2. silastic material of the invention easily wears away.The physical and mechanical properties of silicon rubber is poor compared with General Purpose Rubber, in formula
Silicon rubber base material is not wear-resisting in itself, then a large amount of cooperation packing material hollow glass micropearls, due to the table of hollow glass micropearl material
Face inertia, it is impossible to which form physical chemistry key carries out strengthening action in itself to silicon rubber, increased silicon rubber strand spacing on the contrary,
Intermolecular force is reduced, the mechanical property of silastic material is further reduced so that the abradable degree of material is higher, this
Design means more reliable to the protection at engine rotation position, and protection rotary part is used from abrasion, extension engine
Life-span.
3. silastic material of the invention is corrosion-free to metal casing.Experiment proves that, it is 100 DEG C × 72h, right
0CR17NI4CU4NB and TC4 metals are corrosion-free.
4 silastic material long service lifes of the invention.The steady chemical structure of silastic material easy to wear of the invention,
Verify that materials'use long lifespan was up to 2800 hours by accelerated aging test.
From for preparation technology feature：
5. of the invention high in machining efficiency.Because hollow glass micropearl loading is big, microballon light weight in itself is added, using tradition
Compounding rubber mode mill when processing, when charging to a certain extent when, hollow glass micropearl and rubber infiltrate difficult, during operation
Between it is more long, glass microballoon flies upward the physical and mental health for seriously greatly compromising operating personnel, and pollution is caused to environment；Pass through
Methyl vinyl silicone rubber is mixed with segment glass microballon with mill first, kneader is reused, by most of hollow glass
Microballon mixes with liquid silastic base material, and then the mixing mode of both blendings, shortens mixing time, improves dividing for material
The degree of dissipating, improves efficiency.
6. the moulding processability of material of the present invention is superior.To meet the design requirement of material property, sky need to be largely filled
Heart glass microballoon material, and as the loading of hollow glass micropearl is increased, the processing fluidity reduction of elastomeric compound, and liquid silicon
The addition of rubber so that elastomeric compound has preferable mobile performance, is easily worked making semi-finished product, and semi-finished product are closely knit, greatly
The bubble lamination for reducing product, improve product qualification rate.
From for moulding process feature：
7. silicon rubber produced by the present invention material of obturaging can be made up with programmable geomery and of vulcanization reaction
Fixed elastic rubber.Easy bull ring is circular cone endless shaper article, and product specification is larger, and easy bull ring product is designed into segmentation knot
Structure, using molding sulfuration process, is made easy bull ring sections, and easy bull ring sections finally is integrated into bonding forming on casing.It is this
Molding mode ensure that the circumferential length and product cross section and axial angle of product, by easy grinding hoop material and various sizes of aircraft
Casing perfectly combines, and compared with traditional spray mo(u)lding technique, the technique that step up cure integrates shaping again has cost
It is low, it is simple to operate, the features such as reliability is high.
Specific embodiment
A kind of low-density silastic material easy to wear, its component includes：
Methyl vinyl silicone rubber material, liquid silicon rubber material, low-density functional stuffing, colouring agent and other auxiliary agents；
The mass parts scope of its each component is as follows：
19.7 parts~19.8 parts of methyl vinyl silicone rubber material
19.7 parts~19.8 parts of liquid silicon rubber material
59.3 parts~59.4 parts of low-density functional stuffing
0.9 part~1 part of colouring agent
0.4 part~0.5 part of other auxiliary agents；
Described low-density functional stuffing includes hollow glass micropearl；
Described colouring agent includes spray carbon black；
Other described auxiliary agents include 2,5- dimethyl -2, and 5- is double（T-butylperoxy）Hexane.
A kind of preparation method of low-density silastic material easy to wear, comprises the following steps：
Step one：Using two-roll mill, 3~5mm is transferred in roll spacing, methyl vinyl silicone rubber material is added under certain roller temperature
Material；
Step 2：Two-roll mill sequentially adds low-density functional stuffing, colouring agent, other auxiliary agents, and mixing is mixed, bottom sheet；
Step 3：Using silastic material kneader, liquid silicon rubber material, low-density are sequentially added at a temperature of certain material chamber
Functional stuffing, mixing is uniform, blanking；
Step 4：Using two-roll mill, 3~5mm is transferred in roll spacing, sequentially added in proportion under certain roller temperature step 2,
The premixing glue that step 3 is made, mixing is uniform, Bao Tong, bottom sheet；
Step 5：After bottom sheet parks 24 hours, vulcanized with vulcanizing press and be made low-density silastic material sample easy to wear.
Methyl vinyl silicone rubber material in the step one, its quality is 50 grams；
Low-density functional stuffing in the step 2 is hollow glass micropearl, and its quality is 50 grams；Colouring agent is spray carbon black,
Its quality is 2.5 grams；Other auxiliary agents are 2,5- dimethyl -2, and 5- is double（T-butylperoxy）Hexane, its quality is 0.25 gram；
Liquid silicon rubber material in the step 3, its quality is 50 grams；Low-density functional stuffing is hollow glass micropearl, its
Quality is 100 grams.
Roller temperature in the step one is 0~50 DEG C；
Mixing time in the step 2 is 30 minutes；
Material chamber temperature in the step 3 is 0~60 DEG C；Mixing time is 20 minutes；
Roller temperature in the step 4 is 0~50 DEG C；Feed ratio is step 2 gained elastomeric compound：Step 3 gained elastomeric compound=
1:1；Mixing time is 20 minutes；Thin logical number of times is 3 times；
The vulcanization of the step 5 middle plateform vulcanizer is to vulcanize 20 minutes under the conditions of 10MPa, 160 DEG C.
Specific embodiment：
1st, using two-roll mill, 3~5mm is transferred in roll spacing, roller temperature adds methyl vinyl silicone rubber under the conditions of 0~50 DEG C
50 grams and then 50 grams of hollow glass micropearl, 2.5 grams of carbon black of spraying, 2,5- dimethyl -2 are sequentially added, 5- is double（T-butyl peroxy
Base）0.25 gram of hexane, bottom sheet is stand-by after kneading 50 minutes；
2nd, using silastic material kneader, material chamber sequentially adds 50 grams of liquid silastic, hollow glass under the conditions of 0~60 DEG C
100 grams of microballon, mixing is uniform, and blanking is stand-by；
3rd, using two-roll mill, 3~5mm is transferred in roll spacing, roller temperature adds premix prepared by step 1 under the conditions of 0~50 DEG C
100 grams of premixing glue prepared by 100 grams of glue, step 2, mixing is uniform, after parking 24 hours, with vulcanizing press in 10MPa, and 160
Vulcanization is made test sample in 20 minutes under the conditions of DEG C.
It is as follows through the silicone rubber compounds performance test experiment easy to wear of low-density obtained in the above method：
With reference to table 1,
Table 1
The present invention has expanded the application field of silastic material, makes sizing material at 80 ± 5 degree（Shao A）Under hardness level, density domination
In 0.95 below g/cm3, the Mpa of strength range 2~5, elongation at break scope 70~140%, 3~8KN/ of tearing strength scope
M, thermal conductivity is more than 0.24w/（m.k）, roller abrasion 0.4 ~ 1.0g/cm3 of scope, 100 DEG C × 72h is to metal
0CR17NI4CU4NB and TC4 are corrosion-free.By the control of above material index, obtained silastic product has certain bullet
Property, relatively low density and preferable grindability, meet requirement of the type aircraft engine to long-life and high reliability.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And any equivalent conversion taken technical solution of the present invention, it is claim of the invention and is covered.
Claims (5)
1. a kind of low-density silastic material easy to wear, it is characterised in that：
Its component includes：
Methyl vinyl silicone rubber material, liquid silicon rubber material, low-density functional stuffing, colouring agent and other auxiliary agents；
The mass parts scope of its each component is as follows：
19.7 parts~19.8 parts of methyl vinyl silicone rubber material
19.7 parts~19.8 parts of liquid silicon rubber material
59.3 parts~59.4 parts of low-density functional stuffing
0.9 part~1 part of colouring agent
0.4 part~0.5 part of other auxiliary agents.
2. low-density according to claim 1 silastic material easy to wear, it is characterised in that：
Described low-density functional stuffing includes hollow glass micropearl；
Described colouring agent includes spray carbon black；
Other described auxiliary agents include 2,5- dimethyl -2, and 5- is double（T-butylperoxy）Hexane.
3. the preparation method of a kind of low-density silastic material easy to wear, it is characterised in that：
Comprise the following steps：
Step one：Using two-roll mill, 3~5mm is transferred in roll spacing, methyl vinyl silicone rubber material is added under certain roller temperature
Material；
Step 2：Two-roll mill sequentially adds low-density functional stuffing, colouring agent, other auxiliary agents, and mixing is mixed, bottom sheet；
Step 3：Using silastic material kneader, liquid silicon rubber material, low-density are sequentially added at a temperature of certain material chamber
Functional stuffing, mixing is uniform, blanking；
Step 4：Using two-roll mill, 3~5mm is transferred in roll spacing, sequentially added in proportion under certain roller temperature step 2,
The premixing glue that step 3 is made, mixing is uniform, Bao Tong, bottom sheet；
Step 5：After bottom sheet parks 24 hours, vulcanized with vulcanizing press and be made low-density silastic material sample easy to wear.
4. the preparation method of low-density according to claim 3 silastic material easy to wear, it is characterised in that：
Methyl vinyl silicone rubber material in the step one, its quality is 50 grams；
Low-density functional stuffing in the step 2 is hollow glass micropearl, and its quality is 50 grams；Colouring agent is spray carbon black,
Its quality is 2.5 grams；Other auxiliary agents are 2,5- dimethyl -2, and 5- is double（T-butylperoxy）Hexane, its quality is 0.25 gram；
Liquid silicon rubber material in the step 3, its quality is 50 grams；Low-density functional stuffing is hollow glass micropearl, its
Quality is 100 grams.
5. the preparation method of the low-density silastic material easy to wear according to claim 3 or claim 4, its feature exists
In：
Roller temperature in the step one is 0~50 DEG C；
Mixing time in the step 2 is 30 minutes；
Material chamber temperature in the step 3 is 0~60 DEG C；Mixing time is 20 minutes；
Roller temperature in the step 4 is 0~50 DEG C；Feed ratio is step 2 gained elastomeric compound：Step 3 gained elastomeric compound=
1:1；Mixing time is 20 minutes；Thin logical number of times is 3 times；
The vulcanization of the step 5 middle plateform vulcanizer is to vulcanize 20 minutes under the conditions of 10MPa, 160 DEG C.
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| CN201611190365.0A CN106751861A (en) | 2016-12-21 | 2016-12-21 | A kind of low-density silastic material easy to wear and preparation method thereof |
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| CN201611190365.0A CN106751861A (en) | 2016-12-21 | 2016-12-21 | A kind of low-density silastic material easy to wear and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110041711A (en) * | 2019-05-13 | 2019-07-23 | 河北宝瑞橡胶制品有限公司 | A kind of silicon rubber floating hollow sphere and preparation method thereof |
| CN110185713A (en) * | 2019-07-10 | 2019-08-30 | 贝德科技有限公司 | A kind of Diesel engine pump check shaft coupling |
| CN114055805A (en) * | 2020-08-10 | 2022-02-18 | 中国航发商用航空发动机有限责任公司 | Manufacturing method of easily-worn ring of aircraft engine fan |
| CN115948055A (en) * | 2022-12-23 | 2023-04-11 | 郑州圣莱特空心微珠新材料有限公司 | Low-density silicone rubber and preparation method thereof |
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| CN104231637A (en) * | 2014-09-05 | 2014-12-24 | 国家电网公司 | Damping silicon rubber sound insulation material filled with glass microbeads |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104231637A (en) * | 2014-09-05 | 2014-12-24 | 国家电网公司 | Damping silicon rubber sound insulation material filled with glass microbeads |
| CN104327754A (en) * | 2014-10-28 | 2015-02-04 | 西安航空动力股份有限公司 | Glued joint process of glass bead filled silicon rubber abrasive material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110041711A (en) * | 2019-05-13 | 2019-07-23 | 河北宝瑞橡胶制品有限公司 | A kind of silicon rubber floating hollow sphere and preparation method thereof |
| CN110185713A (en) * | 2019-07-10 | 2019-08-30 | 贝德科技有限公司 | A kind of Diesel engine pump check shaft coupling |
| CN114055805A (en) * | 2020-08-10 | 2022-02-18 | 中国航发商用航空发动机有限责任公司 | Manufacturing method of easily-worn ring of aircraft engine fan |
| CN114055805B (en) * | 2020-08-10 | 2023-09-08 | 中国航发商用航空发动机有限责任公司 | Manufacturing method of easy-to-wear ring of aero-engine fan |
| CN115948055A (en) * | 2022-12-23 | 2023-04-11 | 郑州圣莱特空心微珠新材料有限公司 | Low-density silicone rubber and preparation method thereof |
| CN115948055B (en) * | 2022-12-23 | 2024-01-30 | 郑州圣莱特空心微珠新材料有限公司 | Low-density silicone rubber and preparation method thereof |
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Application publication date: 20170531 |