CN101104790A - Foodstuff sanitation-stage enhancement type elastic waterstop material for civil engineering deformation joint - Google Patents
Foodstuff sanitation-stage enhancement type elastic waterstop material for civil engineering deformation joint Download PDFInfo
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- CN101104790A CN101104790A CNA2007100116402A CN200710011640A CN101104790A CN 101104790 A CN101104790 A CN 101104790A CN A2007100116402 A CNA2007100116402 A CN A2007100116402A CN 200710011640 A CN200710011640 A CN 200710011640A CN 101104790 A CN101104790 A CN 101104790A
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Abstract
The invention relates to an enhanced elastic sealing material of food hygiene grade for civil engineering deformation joint, aiming at increasing the strength and durability of the elastic sealing material to meet the food sanitation requirements. The sealing material comprises one hundred portions of Ethylene-Propylene-Diene Monomer (EPDM), forty-five to eighty portions of carbon black, one to ten portions of tetra-pod like zinc oxide whisker, 0.5 to three portions of stearic acid, five to thirty portions of operating oil, and 0.5 to five portions of sulfur and two to four portions of compound accelerant. The physical and sanitation properties of the sealing material meet or surpass relative requirements of national standard. The elastic sealing materials of the invention is provided with an enhanced mechanical strength and elasticity (deformation), a prolonged service time, simple production and construction technology, guarantying and enhancing the water sealing effect so as to reduce the cost of water sealing project and meanwhile meet the food sanitation requirements. The invention can be widely used for the waterproof and water sealing of construction joints, deformation joints and settlement joints in civil engineering like irrigation, underground and construction.
Description
Technical field
The present invention relates to a kind of water conservancy project material and rubber item, particularly relate to a kind of foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint.
Background technology
In the architectural design of civil engineering works such as water conservancy, water power, dykes and dams, tunnel, culvert, subway, underground and municipal administration, owing to can not continuous pouring, the concrete member that causes of foundation deformation or temperature variation reason such as expand with heat and contract with cold, need leave construction joint, settlement joint, movement joint, must adopt measures of preventing water to prevent leakage problems at these seam places.
Sealing material prevents to stop water (branch) infiltration (flow, diffusion) and preparation and the class material used just, is generally metal (copper, steel etc.), macromolecular elastomer (rubber and rubber and plastic), plastic material or matrix material.Product states of matter by material can be divided into again: waterstop, seal plate, sealing rod, sealing compound and sealing rod etc.
Wherein the macromolecular elastomer waterstop is big because of elasticity, distortion is big, dense water is good, and stagnant water effect is good, and becomes the main product of the sealing material of existing application.But all there is following shortcoming in present macromolecular elastomer waterstop:
Relative intensity is lower: by standard GB 18173.2-2000 " high polymer waterproof material " second section waterstop, GB50108-2001 " Technical code for water proof in underground engineering " requirement, tensile strength 〉=the 15MPa of sealing material, tear strength 〉=30kN/m can not satisfy the higher or other factors of hydraulic pressure to the requirement of strength higher requirement.During practical application, usually need add one metallic water stop band in addition or in the macromolecular elastomer waterstop, increase casing ply.Can increase construction and manufacture difficulty so greatly, improve application cost greatly.As: the described toughener of CN1687289A (2005) is the ore deposit fiber, because of it must carry out coupling processing to its surface for unlike material.And fiber is linear, and the orientation problem is necessarily arranged in the course of processing, and both product was anisotropic.
Comparative lifetime is short: general civil engineering work requires to reach more than 50 years life, and sealing material in the market is difficult to reach its requirement (product that can reach HG/T 2288-92 " rubber fastening band " standard only can reach more than 20 years work-ing life).Do not change in the movement joint and waterstop is nuzzled, after waterstop reached the longevity, the quality of its civil engineering work had not had assurance.December calendar year 2001, people such as Li Yusong have reported their method by artificial accelerated aging test in " synthesis material aging and application ", mathematical model with the aging resistance Changing Pattern is extrapolated, and estimates that their used ethylene-propylene rubber(EPR) waterstop material design service life can be for 50 years.
Not reaching food sanitation requires: waterstop/material contacts with water, and the circulation of water needn't be avoided, even some civil engineering work is directly relevant with tap water.Present various formula for a product is multifarious, composition is different, and waterstop/material product standard is not made stipulations yet, and the product application meeting that does not reach the relevant food hygienic requirements brings certain harm to people and nature.
Summary of the invention
The object of the present invention is to provide a kind of foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint, can improve elastic waterstop material mechanical strength and elasticity (deflection), prolonged work-ing life, simplified manufacturing and construction technology, guarantee and improved stagnant water effect, reduced the sealing engineering cost, can reach the food sanitation requirement simultaneously.But the waterproof and the sealing of construction joint, movement joint and the settlement joint etc. of civil engineering works such as widespread use water conservancy, underground and building.
The objective of the invention is to be achieved through the following technical solutions:
The foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint, its this material are formed: 100 parts of third rubber (EPDM), 45～80 parts of carbon blacks (CB), 1～10 part of four-leg crystal whisker of zinc oxide (T-ZnOw), 0.5～3 part of hard ester acid (SA), 5～30 parts of process oils, 0.5～5 part of Sulfur (S), 2～4 parts of compound accelerants.
The described foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint, its process oil are liquid EPDM or naphthenic oil.
The described foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint, its T-ZnOw is: the single crystal of high purity～100%.
The described foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint, its compound accelerant is: captax (MBT 2-benzothiazolyl mercaptan)+TM monex TD (TT tetramethyl-thiuram disulfide) or accelerant CZ (N-cyclohexyl-benzothiazolyl sulphenamide or TB
ZTD (tetra-benzyl thiram disulfide) or and usefulness.
The described foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint, its captax consumption is 0.2～3 part; TM monex TD consumption is 0～3 part; The accelerant CZ consumption is 0～3 part; Promotor TB
ZThe TD consumption is 0～3 part.
Advantage of the present invention and effect are:
The high transitivity of mechanical strength is good: because of cooperate and the raw material design ingenious, reasonable, especially used T-ZnOw monocrystalline with 3-D solid structure, make the invention material tensile strength 〉=20MPa, tear strength 〉=55kN/m, elongation 〉=450% (and showing isotropy), fragility-70 ℃.
Life-span is long: by the accelerated deterioration method, deduct and cause other possible factor of aged in the actual environment for use, as: the influence of photoaging, ozone layer destroying and chemical etc., calculate that by standard GB/T 20028-2005 " vulcanized rubber or thermoplastic elastomer are used Arrhenius projected life and maximum operation (service) temperature " is conservative material of the present invention reaches and same life-span of engineering (more than 50 years) work-ing life.
Meet food hygienic standard: test by standard GB 4806.1-94 " foodstuff rubber products hygienic standard " and GB 9685-2003 " food product containers, wrapping material used additives use hygienic standard ", meet the food sanitation requirement.
The present invention can improve effectively elastic waterstop material mechanical strength and elasticity (deflection), prolonged work-ing life, simplified manufacturing and construction technology, guarantee and improved stagnant water effect, reduced the sealing engineering cost, can reach the food sanitation requirement simultaneously.
But the waterproof and the sealing of construction joint, movement joint and the settlement joint etc. of civil engineering works such as the present invention's widespread use water conservancy, underground and building.
Embodiment
Embodiment 1:
100 parts of EPDM rubbers are wrapped roller in mill, 2 parts of T-ZnOw of prior blended, 50 parts of CB, 1 part of SA and 20 parts of liquid EPDM process oils and compound accelerant 0.5 part of M+1.5 part TMTD and 1.5 parts of S are added mixing even sheet down successively.Then, sulfuration on vulcanizing press (160 ℃ * 15min * 15MPa), following sheet.
Comparative example 1:
100 parts of EPDM rubbers are wrapped roller in mill, 5 parts of high-purity ZnO of prior blended, 50 parts of CB, 1 part of SA and 20 parts of paraffin oil process oils and compound accelerant 0.5 part of M+1.5 part TMTD and 1.5 parts of S are added mixing even sheet down successively.Then, sulfuration on vulcanizing press (160 ℃ * 15min * 15MPa), following sheet.
Embodiment 2:
100 parts of EPDM rubbers are wrapped roller in mill, 1 part of T-ZnOw of prior blended, 45 parts of CB, 0.5 part of SA and 5 parts of naphthenic oil process oils and compound accelerant 3 parts of M+1 parts TMTD and 0.5 part of S are added mixing even sheet down successively.Then, sulfuration on vulcanizing press (160 ℃ * 15min * 15MPa), following sheet.
Embodiment 3:
100 parts of EPDM rubbers are wrapped roller in mill, 10 parts of T-ZnOw of prior blended, 80 parts of CB, 3 parts of SA and 30 parts of liquid EPDM process oils and compound accelerant 0.5 part of M+1.5 part CZ and 1.5 parts of S are added mixing even sheet down successively.Then, sulfuration on vulcanizing press (160 ℃ * 15min * 15MPa), following sheet.
Embodiment 4:
100 parts of EPDM rubbers are wrapped roller in mill, with 2 parts of T-ZnOw of prior blended, 50 parts of CB, 1 part of SA and 15 parts of naphthenic oil process oils and 0.2 part of M+0.2 part of compound accelerant TB
ZTD and 5 parts of S add mixing even sheet down successively.Then, sulfuration on vulcanizing press (160 ℃ * 15min * 15MPa), following sheet.Embodiment 5:
100 parts of EPDM rubbers are wrapped roller in mill, with 2 parts of T-ZnOw of prior blended, 50 parts of CB, 1 part of SA and 15 parts of liquid EPDM process oils and 0.5 part of M+0.5 part of compound accelerant TDTM+0.5 part CZ+0.5 part TB
ZTD and 1.5 parts of S add mixing even sheet down successively.Then, sulfuration on vulcanizing press (160 ℃ * 15min * 15MPa), following sheet.
The performance of table 1 sealing material
1
| Project | Unit | Index | |||||||
| Embodiment 1 | Comparative example 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | ||||
| Hardness (Shao A) | Degree | 60 | 63 | 60 | 65 | 65 | 64 | ||
| Tensile strength 2 | MPa | 21.2 | 18.5 | 20.1 | 20.2 | 21.0 | 22.3 | ||
| Elongation | ％ | 568 | 410 | 480 | 460 | 502 | 520 | ||
| Tear strength | KN/m | 70.1 | 48.7 | 55.4 | 58.1 | 61.3 | 71.2 | ||
| Temperature limit of brittleness | -℃ | 70 is normal | 70 is normal | 70 is normal | 70 is normal | 70 is normal | 70 is normal | ||
| Compression set | 70℃×24h | ％ | 21.2 | 29 | 19.6 | 19.1 | 20.3 | 18.7 | |
| 23℃×168h | ％ | 11.6 | 19 | 13.0 | 12.9 | 12.4 | 10.1 | ||
| Hot air aging | 70℃× 168h | Changes in hardness/Shao A | Degree | +3 | +6 | +4 | +4 | +4 | +3 |
| Tensile strength | MPa | 22.1 | 15.7 | 19.9 | 20.0 | 20.5 | 22.5 | ||
| Elongation | ％ | 520 | 380 | 460 | 450 | 485 | 508 | ||
| 100℃×168h | Changes in hardness/Shao A | Degree | +5 | +8 | +6 | +5 | +5 | +4 | |
| Tensile strength | MPa | 16.7 | 14.3 | 15.4 | 15.6 | 16.0 | 17.9 | ||
| Elongation | ％ | 460 | 305 | 406 | 401 | 462 | 450 | ||
| Ozone ageing 50pphm:20% * 48h | Level | 1 | 2 | 1 | 1 | 1 | 1 | ||
*After the accelerated deterioration experiment, all reach and same life-span of engineering (more than 50 years) work-ing life by the conservative reckoning of standard GB/T 20028-2005; The 1-inspection for food hygiene is qualified; The horizontal vertical sampling film-making data of 2-are identical
Claims (5)
1. the foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint is characterized in that this material is formed and is: oneself 100 parts of third rubber (EPDM), 45～80 parts of carbon blacks (CB), 1～10 part of four-leg crystal whisker of zinc oxide (T-ZnOw), 0.5～3 part of hard ester acid (SA), 5～30 parts of process oils, 0.5～5 part of Sulfur (S), 2～4 parts of compound accelerants.
2. the foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint according to claim 1 is characterized in that described process oil is liquid EPDM or naphthenic oil.
3. the foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint according to claim 1 is characterized in that described T-ZnOw is: the single crystal of high purity～100%.
4. the foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint according to claim 1 is characterized in that described compound accelerant is: captax (MBT2-benzothiazolyl mercaptan)+TM monex TD (TT tetramethyl-thiuram disulfide) or accelerant CZ (N-cyclohexyl-benzothiazolyl sulphenamide or TB
ZTD (tetra-benzyl thiram disulfide) or and usefulness.
5. the foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint according to claim 1 is characterized in that described captax consumption is 0.2～3 part; Described TM monex TD consumption is 0～3 part; Described accelerant CZ consumption is 0～3 part; Described promotor TB
ZThe TD consumption is 0～3 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100116402A CN100567440C (en) | 2007-06-08 | 2007-06-08 | The foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100116402A CN100567440C (en) | 2007-06-08 | 2007-06-08 | The foodstuff sanitation-stage enhancement type elastic waterstop material that is used for civil engineering deformation joint |
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| CN101104790A true CN101104790A (en) | 2008-01-16 |
| CN100567440C CN100567440C (en) | 2009-12-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115553A (en) * | 2010-11-30 | 2011-07-06 | 陈尔凡 | Room temperature/low temperature vulcanized chloroprene rubber sizing material |
| CN102153818A (en) * | 2011-05-17 | 2011-08-17 | 刘立文 | Calcium sulfate whisker modified EPDM rubber and preparation process thereof |
| CN114230933A (en) * | 2022-02-17 | 2022-03-25 | 东莞市思齐橡胶技术有限公司 | Food-grade EPDM (ethylene-propylene-diene monomer) material with long fatigue life |
| CN114907648A (en) * | 2021-12-22 | 2022-08-16 | 株洲众为科技有限责任公司 | Preparation method and product of food-grade compression-resistant EPDM material for water treatment |
-
2007
- 2007-06-08 CN CNB2007100116402A patent/CN100567440C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115553A (en) * | 2010-11-30 | 2011-07-06 | 陈尔凡 | Room temperature/low temperature vulcanized chloroprene rubber sizing material |
| CN102115553B (en) * | 2010-11-30 | 2012-07-25 | 陈尔凡 | Room temperature/low temperature vulcanized chloroprene rubber sizing material |
| CN102153818A (en) * | 2011-05-17 | 2011-08-17 | 刘立文 | Calcium sulfate whisker modified EPDM rubber and preparation process thereof |
| CN102153818B (en) * | 2011-05-17 | 2013-03-20 | 刘立文 | Calcium sulfate whisker modified EPDM rubber and preparation process thereof |
| CN114907648A (en) * | 2021-12-22 | 2022-08-16 | 株洲众为科技有限责任公司 | Preparation method and product of food-grade compression-resistant EPDM material for water treatment |
| CN114230933A (en) * | 2022-02-17 | 2022-03-25 | 东莞市思齐橡胶技术有限公司 | Food-grade EPDM (ethylene-propylene-diene monomer) material with long fatigue life |
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|---|---|
| CN100567440C (en) | 2009-12-09 |
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Owner name: CHEN ERFAN Free format text: FORMER OWNER: SHENYANG UNIVERSITY OF CHEMICAL TECHNOLOGY Effective date: 20120516 Free format text: FORMER OWNER: LIAONING RUNZHONG WATER SUPPLY CO., LTD. Effective date: 20120516 |
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Address after: 110142 Shenyang economic and Technological Development Zone, Liaoning, No. 11 Co-patentee after: Liaoning Runzhong Water Supply Co.,Ltd., Shenyang Chemical College Patentee after: SHENYANG University OF CHEMICAL TECHNOLOGY Address before: 110142 Shenyang economic and Technological Development Zone, Liaoning, No. 11 Co-patentee before: Liaoning Runzhong Water Supply Co.,Ltd., Shenyang Chemical College Patentee before: Shenyang Institute of Chemical Technology |
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Effective date of registration: 20120516 Address after: 110021 No. 47-2 Shen Liaodong Road, Tiexi District, Liaoning, Shenyang 3031 Patentee after: Chen Erfan Address before: 110142 Shenyang economic and Technological Development Zone, Liaoning, No. 11 Co-patentee before: Liaoning Runzhong Water Supply Co.,Ltd., Shenyang Chemical College Patentee before: Shenyang University of Chemical Technology |
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