CN101412832B - High-strength ultraviolet-resistant rubber dam bag - Google Patents
High-strength ultraviolet-resistant rubber dam bag Download PDFInfo
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- CN101412832B CN101412832B CN2008101765255A CN200810176525A CN101412832B CN 101412832 B CN101412832 B CN 101412832B CN 2008101765255 A CN2008101765255 A CN 2008101765255A CN 200810176525 A CN200810176525 A CN 200810176525A CN 101412832 B CN101412832 B CN 101412832B
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- dam bag
- rubber dam
- weight part
- rubber
- ultraviolet
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Abstract
The invention relates to a rubber dam bag, in particular to a rubber dam bag resistant to high-strength ultraviolet rays. The rubber dam bag uses novel rubber, and has synergistic effect in the aspect of resisting photo-oxidation degradation in cooperation with light stabilizer and ultraviolet absorbent.
Description
Technical field
The present invention relates to a kind of rubber dam bag, particularly a kind of high-strength ultraviolet-resistant rubber dam bag.
Background technology
The tradition rubber dam bag exists serious aging and problems such as be full of cracks and variable color because most of starting material molecular structure is saturated double bond containing polymkeric substance in use, and its principle is as follows:
Cause the aging reason that mainly contains inside and outside two aspects of rubber dam bag.Internal cause mainly is meant factors such as the structural state, composition and the prescription that constitute rubber dam bag material self and forming process condition; External cause mainly contains the factor of aspects such as physics, chemistry, biology; Because of existing, macromolecular material inside causes that aged weakness (as unsaturated double-bond, side chain, hydroxyl, terminal hydroxyl etc.), external cause take this opportunity just to facilitate and promoted aged to take place and development.The external cause that exists mainly contains following several:
1. light oxygen and ultraviolet ray ageing
Rubber dam bag is under working conditions, must be subjected to the radiation of sunlight, thereby light oxygen and ultraviolet ray ageing take place, and in fact, usually are that ultraviolet ray is carried out the reflection of photooxidation resistance with oxygen, make rubber variable color gradually, physical and mechanical properties reduces, and causes embrittlement, and light oxygen and ultraviolet ray are that free radical changes the bonded process, oxygen level increased in the macromolecular chain before this, and the backbone breaking that is caused by oxidation takes place then.The reflection process mainly is the unsaturated double-bond in the airborne oxygen oxidation macromolecular structure, and activation is played in light oxygen and ultraviolet ray, and light oxygen and ultraviolet ray ageing can make dam bag variable color, and the surface is with little be full of cracks (map cracking).Because highlands height above sea level (100 meters ultraviolet rays of the every rising of height above sea level increase about 1.3%) air is rare, air transparency height, ultraviolet radiation is stopped little, sunshine duration is long, reflectivity height (the average reflection 70% of ice and snow, new snowfall 80%, bright ice is more than 90%) etc. reason to cause the highlands be the maximum area of China's solar radiation.As each department, Tibet average of the whole year sunshine time is between 1500～3390 hours, and Lhasa area is 3005 hours.In the Tibet region average annual solar radiation total amount be 6680～8400 megajoules/square metre, be equivalent to day radiation quantity a 5.1～6.4KWh/m
2, high area reaches 7KWh/m
2, (the average annual solar radiation total amount in number area is 3350～5850 megajoules/m extremely greatly from the whole nation
2, be equivalent to average day radiation quantity at 2.5～4.5KWh/m
2About.) its medium wavelength is that the radiation amount energy of 300nm UV-light accounts for 20～25% of total radiation, and the area, Shanghai only accounts for below 15%.
2. thermo-oxidative ageing
When temperature raise, the thermal motion of rubber interior molecules was accelerated, thereby caused degraded and crosslinked reflection.
3. ozone ageing
Because ozone has high chemically reactive, very easily with the unsaturated double-bond reaction, its chemical corrosion is approximately big 200～500 times than the corrodibility of airborne oxygen, so rubber item is had certain infringement.
At with first-class problem, in the rubber dam production process, it is saturated not double bond containing polymkeric substance that material of main part is selected molecular structure, can effectively stop light oxygen and ultraviolet ray ageing to destroy from material like this, in addition, and the rutile TiO that we select for use
2With nanometer SiO
2And ZnO to the ultraviolet reflection sequestration in plateau clearly, cooperates photostabilizer and UV light absorber aspect the anti-photooxidation degraded synergistic effect being arranged.
Summary of the invention
The object of the present invention is to provide a kind of high-strength ultraviolet-resistant rubber dam bag.This rubber dam bag changes problems such as existing serious aging be full of cracks variable color when traditional rubber dam bag uses in high-strength ultraviolet (plateau) area.
Rubber dam bag provided by the invention comprises chlorinated polyethylene rubber, chlorosulfonated polyethylene rubber and chloroprene rubber;
Rubber dam bag provided by the invention also comprises UV light absorber;
Wherein said chlorinated polyethylene rubber accounts for 10～70% of rubber dam bag total mass; Described chlorosulfonated polyethylene rubber accounts for 10～70% of rubber dam bag total mass; Described chloroprene rubber accounts for 10～70% of rubber dam bag total mass; Described UV light absorber accounts for 1～10% of rubber dam bag total mass;
Wherein said UV light absorber comprises UV-9, SiO
2, TiO
2, ZnO, Cr
2O
3Or Fe
2O
3
Rubber dam bag provided by the invention also comprises nano material, and this nano material comprises SiO
2, TiO
2, ZnO, Cr
2O
3, Fe
2O
3, TAIC, MgO, D-RS, UV-9, BIPB or S;
Rubber dam bag provided by the invention also comprises filler, and this filler comprises lime carbonate, carbon black, white carbon black or talcum powder;
Rubber dam bag provided by the invention also comprises pigment.
After the detailed description of the specific embodiment below having read, various purposes of the present invention and advantage will become very clear for the person of ordinary skill in the field.
Embodiment
The following examples are used to further specify the present invention rather than are used for limiting the present invention.
Embodiment
Prescription 1
The rubber dam bag main body prescription polyethylene rubber (CM) 60 of highlands, chlorosulfonated polyethylene rubber (CSM) 20, chloroprene rubber (CR) 20 (variable), cyanacrylate (TAIC) 3, MgO 15, D-RS 5, sulphur (S) 2, dual-tert-butyl peroxidation isopropyl benzene (BIPB) 3, TiO
2Variable, SiO
2Variable, the ZnO variable.
More than filling a prescription, we have established four variables, and in order to draw correct test-results practically, we have selected for use three levels with measuring respectively, adopt orthogonal test to make test-results apace, and are as follows respectively:
A1：CM?50，CSM?30，CR?20；
A2：CM?30，CSM?20，CR?50；
A3：CM?50，CSM?50，CR?0；
B1：TiO
2?15；
B2：TiO
2?10；
B3：TiO
2?5；
C1：SiO
2?45；
C2：SiO
2?40；
C3：SiO
2?35；
D1：ZnO?3；
D2：ZnO?5；
D3：ZnO?8。
Test layout table is as follows:
9 prescription sequences that go out approximately are as follows:
9 test recipes are as follows:
Aging synoptic diagram and composite factor according to each factor draw prescription
CM?30，CSM?20，CR?50，TAIC?3，MgO?15，D-RS?5，S?2，BIPB?3，TiO
2?10，ZnO
2?3 SiO
2?45，
| Hardness (degree) | Intensity (MPa) | Tensile elongation (%) | Temperature limit of brittleness (℃) | Subdue (ten thousand times) | Wear-resisting (cm 3/1.6Km) |
| 62.2 | 17.5 | 455 | -50 | 23.9 | 0.68 |
Test behind the ultraviolet ray ageing: ultraviolet lamp wavelength 280～315nm, 50W/m
2500h (GB/T14522-93)
| Hardness (degree) | Intensity (MPa) | Tensile elongation (%) | Temperature limit of brittleness (℃) | Subdue (ten thousand times) | Wear-resisting (cm 3/1.6Km) | Aging coefficient (%) |
| 62.0 | 17.1 | 400 | -49 | 23.5 | 0.65 | 0.94 |
The surface does not have be full of cracks, and color does not have obvious variable color.
Claims (1)
1. rubber dam bag, it is characterized in that, by 30 weight part chlorinated polyethylene rubbers, 20 weight part chlorosulfonated polyethylene rubbers, 50 weight part chloroprene rubbers, 3 weight part cyanacrylates, 15 weight part MgO, 5 weight part D-RS, 2 weight part sulphur, 3 weight part dual-tert-butyl peroxidation isopropyl benzenes, 10 weight part TiO
2, 3 part by weight of zinc oxide and 45 weight part SiO
2Form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101765255A CN101412832B (en) | 2008-11-17 | 2008-11-17 | High-strength ultraviolet-resistant rubber dam bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101765255A CN101412832B (en) | 2008-11-17 | 2008-11-17 | High-strength ultraviolet-resistant rubber dam bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101412832A CN101412832A (en) | 2009-04-22 |
| CN101412832B true CN101412832B (en) | 2011-05-04 |
Family
ID=40593583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101765255A Active CN101412832B (en) | 2008-11-17 | 2008-11-17 | High-strength ultraviolet-resistant rubber dam bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101412832B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242568B (en) * | 2013-05-21 | 2014-10-08 | 浙江省第一水电建设集团股份有限公司 | Rubber dam bag surface protective layer material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313878A (en) * | 1998-08-20 | 2001-09-19 | 罗狄亚化学公司 | Use of titanium dioxide as anti-UV agent in a rubber composition |
| CN1948376A (en) * | 2006-11-17 | 2007-04-18 | 中国地质大学（北京） | Chloroprene rubber/montmorillonite nano-composite material and its preparation method |
-
2008
- 2008-11-17 CN CN2008101765255A patent/CN101412832B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313878A (en) * | 1998-08-20 | 2001-09-19 | 罗狄亚化学公司 | Use of titanium dioxide as anti-UV agent in a rubber composition |
| CN1948376A (en) * | 2006-11-17 | 2007-04-18 | 中国地质大学（北京） | Chloroprene rubber/montmorillonite nano-composite material and its preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 高本虎.橡胶坝工程技术指南.《橡胶坝工程技术指南》.中国水利水电出版社,2004,220、335. * |
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| Publication number | Publication date |
|---|---|
| CN101412832A (en) | 2009-04-22 |
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