CN1304516C - Adhesive for slow-binding prestress reinforcement - Google Patents
Adhesive for slow-binding prestress reinforcement Download PDFInfo
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- CN1304516C CN1304516C CNB200510132504XA CN200510132504A CN1304516C CN 1304516 C CN1304516 C CN 1304516C CN B200510132504X A CNB200510132504X A CN B200510132504XA CN 200510132504 A CN200510132504 A CN 200510132504A CN 1304516 C CN1304516 C CN 1304516C
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Abstract
The present invention relates to an adhesive for a slow adhering pre-stress rib, which is composed of bisphenol-A epoxy resin, reactive diluent, namely bisphenol-A glycerin ether, non-reactive diluent, namely dibutyl phthalate, a solidifying agent, namely polyamide resin, a reactive toughening agent, namely thermoplastic polyurethane, and stuffing, namely cement. The condensation rate of the adhesive for a slow adhering pre-stress rib of the present invention can be controlled according to actual engineering requirements. The adhesive has good fluidity, adhesiveness and toughness in the prior period, and is gradually solidified in a certain period after the adhesive is combined with the pre-stress rib by an extrusion and coating technology. The adhesive force is continuously increased. Finally, the present invention has high strength after solidification.
Description
Technical field
The present invention relates to the tackiness agent that a kind of delayed bonding prestressed tendon is used.
Background technology
Retarded adhesive prestressed technology is an emerging technology of current Building Trade in China, Chinese patent application publication number CN1425731A discloses the tackiness agent that a kind of delayed bonding prestressed tendon is used at present, it is made up of Resins, epoxy, softening agent, solidifying agent and filler, and wherein solidifying agent is Dyhard RU 100 or imidazoles.It mainly is corrosion prevention at presstressed reinforcing steel that this delayed bonding prestressed tendon sticks with glue its performance index of agent, the research essence that has departed from retarded adhesive prestressed technology " early stage, construction was the same with unbonded prestressing tendon, reached the mechanical property of bonded prestressed tendon after the later stage curing ".
Current adhesive products is because the characteristic of its used solidifying agent, curing reaction is slow under the normal temperature and pressure, want the significant period of time could completely solidified, so just making delayed bonding prestressed tendon not reach as early as possible after construction finishes has bond state and mechanical property.In addition, current adhesive products is because its base-material is a Resins, epoxy, and use nonactive softening agent, thereby the fragility of its cured article is big, intensity is low, cause that unit elongation is low behind the adhesive solidification, fragility is bigger, when external force is born in the bonded part, be easy to crack and expansion rapidly, cause the glue-line cracking, therefore antifatigue must not reduce fragility, raising tackiness agent bending resistance and resistance to impact shock, increase toughness, the loading strength that improves.In addition, owing to used solidifying agent in the current adhesive products is Dyhard RU 100 or imidazoles.Dyhard RU 100 is a kind of latent curing agent, with the curing reaction of Resins, epoxy will be could be more complete more than 170 ℃.And be a kind of poisonous as the imidazoles of promotor, skin, mucous membrane there are pungency and corrosive material, solidification value is at 80～120 ℃.Be that this two classes solidifying agent can be placed at normal temperatures and pressures for a long time, generally reach solid state gradually 1～2 year ability, down curing reaction could take place as early as possible in certain ambient conditions (as the condition of heating and illumination) only, therefore under some execution conditions, can't guarantee its completely solidified, therefore also just can't reach performance index requirements such as needed intensity, limit its use range.
In sum, the performance that current adhesive products shows can't satisfy relevant rate of set in the retarded adhesive prestressed technology, the requirement fully of many important indicators such as cohesive strength and toughness.
Summary of the invention
The purpose of this invention is to provide a kind of rate of set can be according to the actual macromolecule adhesive and the preparation technology thereof of regulation and control of requiring of engineering, this tackiness agent has good flowability, tack and toughness in early stage, after extruding is coated with the job contract skill and presstressed reinforcing steel combines, solidify gradually within a certain period of time, cohesive force constantly increases, and has high intensity after the final completely solidified.
For achieving the above object, the present invention takes following design: the tackiness agent that a kind of delayed bonding prestressed tendon is used is characterized in that: it is that 600 to 900 low molecule pa resin, endurable active toughener thermoplastic polyurethane and filler cement are formed by bisphenol-A type Resins, epoxy, reactive thinner dihydroxyphenyl propane two glyceryl ethers, non-activated thinner dibutyl phthalate, solidifying agent molecular weight.
The prescription of 2-12 month solidified tackiness agent is: the non-activated thinner dibutyl phthalate of the bisphenol-A type Resins, epoxy of 15-25 weight part, reactive thinner dihydroxyphenyl propane two glyceryl ethers of 15-25 weight part, 5-10 weight part, the solidifying agent molecular weight of 1-5 weight part are 600 to 900 low molecule pa resin, the endurable active toughener thermoplastic polyurethane of 2-8 weight part and the filler cement of 40-55 weight part.
The prescription of 3 months solidified tackiness agent is: the non-activated thinner dibutyl phthalate of the bisphenol-A type Resins, epoxy of 20-25 weight part, dihydroxyphenyl propane two glyceryl ethers of 20-25 weight part, 8-10 weight part, the solidifying agent molecular weight of 4-5 weight part are 600 to 900 low molecule pa resin, the endurable active toughener thermoplastic polyurethane of 5-8 weight part and the filler cement of 45-50 weight part.
The prescription of 6 months solidified tackiness agent is: the dibutyl phthalate of the bisphenol-A type Resins, epoxy of 15-20 weight part, dihydroxyphenyl propane two glyceryl ethers of 20-25 weight part, 6-8 weight part, the molecular weight of 2-4 weight part are 600 to 900 low molecule pa resin, the thermoplastic polyurethane of 2-5 weight part and the cement of 50-55 weight part.
The prescription of 12 months solidified tackiness agent is: the dibutyl phthalate of the bisphenol-A type Resins, epoxy of 15-20 weight part, dihydroxyphenyl propane two glyceryl ethers of 15-20 weight part, 5-7 weight part, the molecular weight of 1-3 weight part are 600 to 900 low molecule pa resin, the thermoplastic polyurethane of 2-5 weight part and the cement of 50-55 weight part.
Advantage of the present invention is: 1, the present invention compares with current similar product and provides that to use another kind of self-vulcanizing agent-molecular weight be 600 to 900 low molecule 650 polyamide resins, its principal feature is that the proportional quantity requirement is not strict, use range is big, thereby regulate its content in tackiness agent, can control the set time of tackiness agent within 2～12 months optimum range according to engineering request, and the present invention in solidification process to external world environment do not have particular requirement, get final product at ambient temperature, need not heat.Efficiently solve like this present product at normal temperatures and pressures required set time long, after construction finishes, can't reach the defective of bonded prestressed tendon mechanical property relatively fast.In addition, 650 polyamide resins have the intrinsic toughening effect, and general amine curing agent excellent property, can make cured article have high elasticity, cohesive force and water tolerance.
2, use a kind of endurable active toughener-thermoplastic polyurethane among the present invention, compare as softening agent with dibutyl phthalate with currently available products, toughner-thermoplastic polyurethane contains active group, can react with resin, obtain comparatively ideal toughening effect, has elasticity with Resins, epoxy reaction gained cured product, shock-resistant, heat-resisting, cold-resistant hot alternation etc., thereby the shortcoming that the stripping strength of improving epoxyn is low, thereby the present invention only adds an amount of dibutyl phthalate as non-activated thinner, to reduce the viscosity of tackiness agent, increase amount of filler, thereby reduce cost.
3, tackiness agent of the present invention is because wherein each constituent materials is neutrality or weakly alkaline material, chemical reaction does not take place after mixing in each component, so tackiness agent of the present invention still is weakly alkaline, and do not contain volatile component, free from extraneous odour, alkaline-resisting, to human body, environmentally friendly, and in whole solidification process, almost do not have variation on the volume, can not discharge water outlet or other micromolecular gas and compound yet, so its shrinking percentage is very low, also can not produce bubble and inner porous defective.
4, tackiness agent of the present invention is under the chemical action of solidifying agent and endurable active toughener, force of cohesion and toughness significantly strengthen in the solidified process gradually, and the extremely strong cohesive force of generation between bonded thing deformed bar and the sleeve, thereby make the product after the curing have high intensity, have more better heat-resisting, insulativity simultaneously.
Embodiment
Embodiment 1
The tackiness agent that a kind of delayed bonding prestressed tendon is used, the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 15 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 15 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 5 kilograms of weight produces, 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of 1 kilogram of weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 2 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 55 kilograms of weight produce.
Above-mentioned each component follows these steps to make tackiness agent of the present invention:
A, above-mentioned material dropped in the kneader by proportioning stirred 2～3 minutes, it is stirred, and to pasty state;
B, gained pasty material in a operation is put into three-roller, make it slough bubble, grind, mix more carefully, even.
The adhesive products of the present invention of Zhi Zuoing has good flowability, tack, toughness, thermotolerance, insulativity, toxicological harmless contaminative and low-shrinkage, high-intensity characteristics thus, is that a kind of brand-new delayed bonding prestressed tendon sticks with glue agent.
Embodiment 2
The preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 25 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 25 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 10 kilograms of weight produces, 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of 5 kilograms of weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 8 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 40 kilograms of weight produce.
Embodiment 3
The preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 20 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 20 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 8 kilograms of weight produces, 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of 3 kilograms of weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 5 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 47 kilograms of weight produce.
Embodiment 4
The preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 20 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 20 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 8 kilograms of weight produces, 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of 4 kilograms of weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 5 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 50 kilograms of weight produce.
Embodiment 5
The preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 25 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 25 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 10 kilograms of weight produces, 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of 5 kilograms of weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 8 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 45 kilograms of weight produce.
Embodiment 6
The preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 23 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 23 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 9 kilograms of weight produces, 4.5 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of kilogram weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 6 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 48 kilograms of weight produce.
Embodiment 7
The preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 15 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 20 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 6 kilograms of weight produces, 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of 2 kilograms of weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 2 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 55 kilograms of weight produce.
Embodiment 8
The preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 20 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 25 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 8 kilograms of weight produces, 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of 4 kilograms of weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 5 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 50 kilograms of weight produce.
Embodiment 9
The preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 18 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 23 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 7 kilograms of weight produces, 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of 3 kilograms of weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 4 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 52 kilograms of weight produce.
Embodiment 10
The preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 15 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 15 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 5 kilograms of weight produces, 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of 1 kilogram of weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 2 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 55 kilograms of weight produce.
Embodiment 11
The preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 20 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 20 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 7 kilograms of weight produces, 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of 3 kilograms of weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 5 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 50 kilograms of weight produce.
Embodiment 12
The preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type Resins, epoxy that Shanghai Resin Factory of 18 kilograms of weight produces, 616# dihydroxyphenyl propane two glyceryl ethers that reactive thinner Shanghai Resin Factory of 18 kilograms of weight produces, the non-activated thinner dibutyl phthalate that the Tianjin solvent factory of 6 kilograms of weight produces, 650 polyamide resins that the associating auxiliary reagent factory, Fragrance Hill, solidifying agent Beijing of 2 kilograms of weight produces, the P042.5 silicate cement that the SL-102 type thermoplastic polyurethane that the endurable active toughener Kunshan City Precise chemical engineering Research Institute Co., Ltd of 4 kilograms of weight produces and the cement mill, coloured glaze river, filler Beijing of 52 kilograms of weight produce.
Claims (4)
1, the tackiness agent used of a kind of delayed bonding prestressed tendon, it is characterized in that: it is that 600 to 900 low molecule pa resin, the endurable active toughener thermoplastic polyurethane and the 40-55 weight part filler cement of 2-8 weight part are formed by the bisphenol-A type Resins, epoxy of 15-25 weight part, reactive thinner dihydroxyphenyl propane two glyceryl ethers of 15-25 weight part, the non-activated thinner dibutyl phthalate of 5-10 weight part, the solidifying agent molecular weight of 1-5 weight part.
2, the tackiness agent used of delayed bonding prestressed tendon as claimed in claim 1, it is characterized in that: described bisphenol-A type Resins, epoxy is that 20-25 weight part, described dihydroxyphenyl propane two glyceryl ethers are that 20-25 weight part, described dibutyl phthalate are that 8-10 weight part, described molecular weight are that 600 to 900 low molecule pa resin is that 4-5 weight part, described thermoplastic polyurethane are the 5-8 weight part, and described cement is the 45-50 weight part.
3, the tackiness agent used of delayed bonding prestressed tendon as claimed in claim 1, it is characterized in that: described bisphenol-A type Resins, epoxy is that 15-20 weight part, described dihydroxyphenyl propane two glyceryl ethers are that 20-25 weight part, described dibutyl phthalate are that 6-8 weight part, described molecular weight are that 600 to 900 low molecule pa resin is that 2-4 weight part, described thermoplastic polyurethane are the 2-5 weight part, and described cement is the 50-55 weight part.
4, the tackiness agent used of delayed bonding prestressed tendon as claimed in claim 1, it is characterized in that: described bisphenol-A type Resins, epoxy is that 15-20 weight part, described dihydroxyphenyl propane two glyceryl ethers are that 15-20 weight part, described dibutyl phthalate are that 5-7 weight part, described molecular weight are that 600 to 900 low molecule pa resin is that 1-3 weight part, described thermoplastic polyurethane are the 2-5 weight part, and described cement is the 50-55 weight part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510132504XA CN1304516C (en) | 2005-12-23 | 2005-12-23 | Adhesive for slow-binding prestress reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510132504XA CN1304516C (en) | 2005-12-23 | 2005-12-23 | Adhesive for slow-binding prestress reinforcement |
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| Publication Number | Publication Date |
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| CN1775889A CN1775889A (en) | 2006-05-24 |
| CN1304516C true CN1304516C (en) | 2007-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200510132504XA Expired - Fee Related CN1304516C (en) | 2005-12-23 | 2005-12-23 | Adhesive for slow-binding prestress reinforcement |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295905A (en) * | 2011-07-01 | 2011-12-28 | 甘肃泰达建筑技术发展有限公司 | High performance retard-bonded material for retard-bonded prestressed reinforcing steel and preparation method thereof |
| CN104046285B (en) * | 2013-03-15 | 2016-03-09 | 富葵精密组件(深圳)有限公司 | Film, flexible base plate, flexible circuit board and making method |
| CN108342176A (en) * | 2018-02-12 | 2018-07-31 | 湖北君邦新材料科技有限公司 | A kind of environment-friendly type fluid sealant |
| CN108641659A (en) * | 2018-05-09 | 2018-10-12 | 佛山市三水日邦化工有限公司 | A kind of Modified phenolic epoxy resin hot melt adhesive |
| CN110845979B (en) * | 2019-11-20 | 2021-12-03 | 北京市建筑工程研究院有限责任公司 | Modified delayed coagulation binder and preparation method thereof |
| CN114571818B (en) * | 2021-04-01 | 2024-07-16 | 江苏派恩新型材料有限公司 | High-heat-insulation film-coated tile and preparation method thereof |
| CN113429746B (en) * | 2021-07-27 | 2022-06-03 | 华商国际工程有限公司 | Low-temperature-resistant slow-bonding agent and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1707046A1 (en) * | 1989-03-01 | 1992-01-23 | Филиал Всесоюзного научно-исследовательского института электромеханики | Adhesive melt |
| CN1143661A (en) * | 1996-01-17 | 1997-02-26 | 青岛化工学院 | Process for preparing normal temp solidification polyurethane toughened epoxy resin adhesive |
| CN1206034A (en) * | 1997-07-21 | 1999-01-27 | 贾剑珉 | High-strength flexible structure adhesive |
| CN1425731A (en) * | 2002-12-19 | 2003-06-25 | 刘载鹏 | Adhesive for slowly binding prestressed rib |
-
2005
- 2005-12-23 CN CNB200510132504XA patent/CN1304516C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1707046A1 (en) * | 1989-03-01 | 1992-01-23 | Филиал Всесоюзного научно-исследовательского института электромеханики | Adhesive melt |
| CN1143661A (en) * | 1996-01-17 | 1997-02-26 | 青岛化工学院 | Process for preparing normal temp solidification polyurethane toughened epoxy resin adhesive |
| CN1206034A (en) * | 1997-07-21 | 1999-01-27 | 贾剑珉 | High-strength flexible structure adhesive |
| CN1425731A (en) * | 2002-12-19 | 2003-06-25 | 刘载鹏 | Adhesive for slowly binding prestressed rib |
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| CN1775889A (en) | 2006-05-24 |
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Effective date of registration: 20091204 Address after: Beijing city Haidian District Xitucheng Road 33, zip code: 100088 Co-patentee after: China Jingye Engineering Technology Co., Ltd. Patentee after: China metallurgy Architecture Research Institute Co., Ltd. Address before: Institute of prestressed technology, No. 33, West Tu Cheng Road, Haidian District, Beijing, China: zip code: 100088 Co-patentee before: Wu Zhuanqin Patentee before: General Building Research Institute of China Metallurgy Group Co-patentee before: Shang Renjie |
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