CN107629333A - A kind of preparation method of flex cracking resistance outer hood elastomeric material - Google Patents
A kind of preparation method of flex cracking resistance outer hood elastomeric material Download PDFInfo
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- CN107629333A CN107629333A CN201710838621.0A CN201710838621A CN107629333A CN 107629333 A CN107629333 A CN 107629333A CN 201710838621 A CN201710838621 A CN 201710838621A CN 107629333 A CN107629333 A CN 107629333A
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- outer hood
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Abstract
The invention discloses a kind of preparation method of flex cracking resistance outer hood elastomeric material, ultrasonication is carried out to ethylene propylene diene rubber, oil extended EPDM, fluorubber Blend rubber in the present invention, improve the compatibility between sizing material, increase the crosslink density of elastomeric material, improve tensile strength, elongation rate of tensile failure, wearability and the ageing-resistant cracking performance of windshield rubber material；The coated with silica titanium dioxide age resistor added in addition, it is suppressed that the photocatalysis of nano titanium oxide, uv absorption spectra peak domain are broadened, and product possesses good uv absorption capacity, and the ager process of outer hood rubber is delayed.
Description
Technical field
The present invention relates to train component to produce and process technical field, and in particular to a kind of flex cracking resistance outer hood rubber material
The preparation method of material.
Background technology
The windscreen of EMU is divided into outer hood and the part of interior windscreen 2, extruding between shared vehicle and relative
Motion, and interior windscreen, mainly as passenger safety passage, outer hood is used for reducing noise caused by vehicle operation, also simultaneously
Cambered surface connection is smooth consistent between making 2 vehicles, to reduce air drag during EMU operation.But rubber windshield
Horizontal vertical capsule generally existing surface checking during operation, main cause are that antioxidant system and production technology do not conform in formula
Caused by reason.
TiO2Although with higher refractive index and preferable uv absorption property, after absorbing ultraviolet due to it,
The hole with strong oxidizing property and the light induced electron with strong reducing property can be produced.When it is added to macromolecule material as additive
When in material, hole caused by photocatalysis and electronics can be with the O of nanoparticle surface2And H2The materials such as O react, generation chemistry
The higher free radical of activity.These free radicals can react with high polymer material, interrupt intermolecular chemical bond, reduce high score
The molecular weight and physical and mechanical properties of sub- material, and ultimately result in its degraded.
The content of the invention
The invention provides a kind of preparation method of flex cracking resistance outer hood elastomeric material, outer hood rubber is effectively improved
The ageing resistance cracking performance of material.
The present invention is achieved by the following technical solutions：
A kind of preparation method of flex cracking resistance outer hood elastomeric material, including step in detail below：
（1）Plasticate：Open banbury, by 100-120 parts by weight ethylene propylene diene rubber, 13-23 parts oil extended EPDM,
15-20 part fluorubber is put into banbury, and 3-8 minutes are blended under spinner velocity 45-60r/min；
（2）Banburying：By the sizing material plasticated put into banbury in banburying, after mixing by sizing material in two-roll mill slice, then
Film is cut into wide 15mm, thick 15mm, long 170mm adhesive tape；
（3）Ultrasonic assistant is extruded：Then adhesive tape is put into single screw rod ultrasonic wave coaxial extruder and extruded, screw speed is
20-30r/min, rate of feeding 35-45g/min, 105-120 DEG C of barrel zone temperature；
（4）Charging is kneaded：Then by step（3）Blend rubber and 25-38 parts precipitated calcium carbonate, 0.5-2 parts anti-aging agent RD, 1-4 parts
Modifying titanium dioxide age resistor, 35-45 parts carbon black, 2-7 part sulphur are put into two-roll mill successively, in 20-40r/min rotating speeds
With 35-45 DEG C at be kneaded 8-13 minutes, sizing material is beaten into triangle bag twice, it is thin it is logical 2-3 times after, slice；
（5）Vulcanization：
Using drum vulcanizer to step（4）Sheet rubber is vulcanized, and curing temperature is 155-175 DEG C, sulfide stress 15-
20MPa, cure time are 10-20 minutes.
Wherein, the modifying titanium dioxide age resistor refers to coated with silica titanium dioxide age resistor, and its preparation passes through
TEOS hydrolyzes generation silicic acid gel in the basic conditions, and SiO is generated after silicic acid gel cracking2And it is deposited on TiO2Surface, realize
To TiO2Surface carries out SiO2Cladding.
Wherein, the step（3）Ultrasonication frequency is 20kHz, and ultrasonic amplitude is 5.0 μm.
The present invention has the beneficial effect that：
（1）Ultrasonication is carried out to ethylene propylene diene rubber, oil extended EPDM, fluorubber Blend rubber in the present invention, carried
Compatibility between high sizing material, increase the crosslink density of elastomeric material, improve the tensile strength of windshield rubber material, break and stretch
Long rate and wearability, and the hardness on material, stress at definite elongation and without influence, while the addition of fluorubber can improve elastomeric material
Ageing-resistant cracking performance.
（2）After Surface coating silica, with Ti-O-Si keys between coated with silica film and nano-titania particle
Form combines, and absorbs hydroxyl radical free radical OH caused by nano titanium dioxide photocatalysis, it is suppressed that the light of nano titanium oxide
Catalytic action, uv absorption spectra peak domain broaden, and modifying titanium dioxide age resistor possesses good uv absorption capacity,
After adding nanometer antiaging agent, the ager process of outer hood rubber is delayed, and anti-ultraviolet ageing ability improves.
Embodiment
A kind of preparation method of flex cracking resistance outer hood elastomeric material, including step in detail below：
（1）Plasticate：Banbury is opened, by 100 parts by weight ethylene propylene diene rubbers, 16 parts of oil extended EPDMs, 18 parts of fluorine rubbers
Glue is put into banbury, is blended 5 minutes under spinner velocity 55r/min；
（2）Banburying：By the sizing material plasticated put into banbury in banburying, after mixing by sizing material in two-roll mill slice, then
Film is cut into wide 15mm, thick 15mm, long 170mm adhesive tape；
（3）Ultrasonic assistant is extruded：Then adhesive tape is put into single screw rod ultrasonic wave coaxial extruder and extruded, screw speed is
25r/min, rate of feeding 38g/min, 110 DEG C of barrel zone temperature；
（4）Charging is kneaded：Then by step（3）Blend rubber and 30 parts of precipitated calcium carbonates, 0.8 part of anti-aging agent RD, 3 parts of modified dioxies
Change titanium age resistor, 40 parts of carbon blacks, 5 parts of sulphur to put into two-roll mill successively, 10 points are kneaded at 40r/min rotating speeds and 40 DEG C
Clock, sizing material is beaten into triangle bag twice, after thin logical 2 times, slice；
（5）Vulcanization：
Using drum vulcanizer to step（4）Sheet rubber is vulcanized, and curing temperature is 165 DEG C, sulfide stress 15MPa, sulphur
It is 18 minutes to change the time.
Wherein, the modifying titanium dioxide age resistor refers to coated with silica titanium dioxide age resistor, its preparation method tool
Body is as follows：Weigh 200mg TiO2Powder, it is added in the beaker of the deionized water containing 30mL, then adds 10mg calgons
As dispersant, after stirring, beaker is placed in ultrasonic washing instrument, ultrasonic wave disperses 30-45 minutes, obtains nanometer
TiO2Suspension, the ethanol solution that 150mL contains 5% ammoniacal liquor is slowly added dropwise, after stirring, 5mL TEOS are added dropwise, and use magnetic
Power agitator high-speed stirred, after TEOS is added dropwise to complete, it is aged 5 hours under normal temperature, after centrifugation, air drying, you can
To coated with silica titanium dioxide.
Claims (3)
1. a kind of preparation method of flex cracking resistance outer hood elastomeric material, it is characterised in that including step in detail below：
（1）Plasticate：Open banbury, by 100-120 parts by weight ethylene propylene diene rubber, 13-23 parts oil extended EPDM,
15-20 part fluorubber is put into banbury, and 3-8 minutes are blended under spinner velocity 45-60r/min；
（2）Banburying：By the sizing material plasticated put into banbury in banburying, after mixing by sizing material in two-roll mill slice, then
Film is cut into wide 15mm, thick 15mm, long 170mm adhesive tape；
（3）Ultrasonic assistant is extruded：Then adhesive tape is put into single screw rod ultrasonic wave coaxial extruder and extruded, screw speed is
20-30r/min, rate of feeding 35-45g/min, 105-120 DEG C of barrel zone temperature；
（4）Charging is kneaded：Then by step（3）Blend rubber and 25-38 parts precipitated calcium carbonate, 0.5-2 parts anti-aging agent RD, 1-4 parts
Modifying titanium dioxide age resistor, 35-45 parts carbon black, 2-7 part sulphur are put into two-roll mill successively, in 20-40r/min rotating speeds
With 35-45 DEG C at be kneaded 8-13 minutes, sizing material is beaten into triangle bag twice, it is thin it is logical 2-3 times after, slice；
（5）Vulcanization：
Using drum vulcanizer to step（4）Sheet rubber is vulcanized, and curing temperature is 155-175 DEG C, sulfide stress 15-
20MPa, cure time are 10-20 minutes.
A kind of 2. preparation method of flex cracking resistance outer hood elastomeric material according to claims 1, it is characterised in that
The modifying titanium dioxide age resistor refers to coated with silica titanium dioxide age resistor, and it is prepared by TEOS in the basic conditions
Hydrolysis generation silicic acid gel, SiO is generated after silicic acid gel cracking2And it is deposited on TiO2Surface, realize to TiO2Surface is carried out
SiO2Cladding.
A kind of 3. preparation method of flex cracking resistance outer hood elastomeric material according to claims 1, it is characterised in that
The step（3）Ultrasonication frequency is 20kHz, and ultrasonic amplitude is 5.0 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710838621.0A CN107629333A (en) | 2017-09-18 | 2017-09-18 | A kind of preparation method of flex cracking resistance outer hood elastomeric material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710838621.0A CN107629333A (en) | 2017-09-18 | 2017-09-18 | A kind of preparation method of flex cracking resistance outer hood elastomeric material |
Publications (1)
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| CN107629333A true CN107629333A (en) | 2018-01-26 |
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| CN201710838621.0A Pending CN107629333A (en) | 2017-09-18 | 2017-09-18 | A kind of preparation method of flex cracking resistance outer hood elastomeric material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112876778A (en) * | 2021-03-04 | 2021-06-01 | 南京东润特种橡塑有限公司 | Water gate rubber sealing element with high weather resistance and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102463105A (en) * | 2010-10-29 | 2012-05-23 | 中国科学院理化技术研究所 | Preparation method of silicon-dioxide-coated titanium dioxide hollow core-shell structural material |
| CN103232733A (en) * | 2013-04-10 | 2013-08-07 | 雅安百图高新材料有限公司 | Nano-scale silica-coated titanium dioxide powder |
| CN103665592A (en) * | 2013-11-29 | 2014-03-26 | 山东永泰化工有限公司 | Composition of ethylene propylene rubber and fluororubber |
| CN106167584A (en) * | 2016-07-19 | 2016-11-30 | 合肥毅创钣金科技有限公司 | A kind of cladding titanium dioxide strengthens the sealing strip of resistance to UV aging |
| CN206217134U (en) * | 2016-10-27 | 2017-06-06 | 华南理工大学 | The extrusion neck ring mold that ultrasonic vibration acts synergistically with Uniform Tension stress |
| CN107008242A (en) * | 2017-04-24 | 2017-08-04 | 中国科学院理化技术研究所 | A kind of nano powder photocatalyst material of porous silica cladding titanium dioxide and preparation method thereof |
-
2017
- 2017-09-18 CN CN201710838621.0A patent/CN107629333A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102463105A (en) * | 2010-10-29 | 2012-05-23 | 中国科学院理化技术研究所 | Preparation method of silicon-dioxide-coated titanium dioxide hollow core-shell structural material |
| CN103232733A (en) * | 2013-04-10 | 2013-08-07 | 雅安百图高新材料有限公司 | Nano-scale silica-coated titanium dioxide powder |
| CN103665592A (en) * | 2013-11-29 | 2014-03-26 | 山东永泰化工有限公司 | Composition of ethylene propylene rubber and fluororubber |
| CN106167584A (en) * | 2016-07-19 | 2016-11-30 | 合肥毅创钣金科技有限公司 | A kind of cladding titanium dioxide strengthens the sealing strip of resistance to UV aging |
| CN206217134U (en) * | 2016-10-27 | 2017-06-06 | 华南理工大学 | The extrusion neck ring mold that ultrasonic vibration acts synergistically with Uniform Tension stress |
| CN107008242A (en) * | 2017-04-24 | 2017-08-04 | 中国科学院理化技术研究所 | A kind of nano powder photocatalyst material of porous silica cladding titanium dioxide and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112876778A (en) * | 2021-03-04 | 2021-06-01 | 南京东润特种橡塑有限公司 | Water gate rubber sealing element with high weather resistance and preparation method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180126 |
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| RJ01 | Rejection of invention patent application after publication |