Adhesive for slow-binding prestress reinforcement

A kind of technology of slow-bonding prestress and adhesive, applied in the direction of adhesive, adhesive type, epoxy resin, etc., can solve the problems of unable to meet the setting speed, unable to guarantee complete curing, limited use range, etc., to improve the peel strength Low, high elasticity, cost reduction effect

Inactive Publication Date: 2007-03-14
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, these two types of curing agents can be placed for a long time under normal temperature and pressure. Generally, it takes 1 to 2 years to gradually reach the curing state. Only under certain external conditions (such as heating and light conditions) can the curing reaction occur as soon as possible. Therefore, Under certain construction conditions, it cannot be guaranteed to be fully cured, so it cannot meet the required strength and other performance indicators, which limits its scope of use.
[0004] In summary, the performance of the current adhesive products cannot meet the complete requirements of many important indicators such as setting speed, bond strength and toughness in the slow bonding prestressing technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of tackiness agent that slow bonding prestressed tendon is used, the E51 bisphenol-A type epoxy resin that the Shanghai Resin Factory of 15 kilograms of weight produces, the reactive diluent of 15 kilograms of weight Shanghai Resin Factory produces 616# bisphenol A diglycerin Ether, 5 kilograms of non-reactive diluent dibutyl phthalate produced by Tianjin Solvent Factory, 1 kilogram of curing agent, 650 polyamide resin produced by Beijing Xiangshan United Auxiliary Factory, 2 kilograms of active toughening agent SL-102 thermoplastic polyurethane produced by Kunshan Fine Chemical Research Institute Co., Ltd. and 55 kg of filler P042.5 portland cement produced by Beijing Liulihe Cement Factory.

[0017] Above-mentioned each composition material is made adhesive of the present invention by the following steps:

[0018] a. Put the above materials into the kneader according to the ratio and stir for 2 to 3 minutes to make it evenly stirred until it becomes a paste;

...

Embodiment 2

[0022] Preparation method is identical with embodiment 1, and its prescription is: the E51 bisphenol-A type epoxy resin that the Shanghai Resin Factory of 25 kilograms of weights produces, the reactive diluent of 25 kilograms of weights Shanghai Resins Factory produces 616# bisphenol A diglycerol Ether, 10 kilograms of non-reactive diluent dibutyl phthalate produced by Tianjin Solvent Factory, 5 kilograms of curing agent 650 polyamide resin produced by Beijing Xiangshan United Auxiliary Factory, 8 kilograms of active toughening agent SL-102 thermoplastic polyurethane produced by Kunshan Fine Chemical Research Institute Co., Ltd. and 40 kg of filler P042.5 Portland cement produced by Beijing Liulihe Cement Factory.

Embodiment 3

[0024] Preparation method is identical with embodiment 1, and its formula is: the E51 bisphenol-A type epoxy resin that the Shanghai Resin Factory of 20 kilograms of weight produces, the active diluent of 20 kilograms of weight Shanghai Resin Factory produces 616# bisphenol A diglycerol Ether, 8 kilograms of non-reactive diluent dibutyl phthalate produced by Tianjin Solvent Factory, 3 kilograms of curing agent 650 polyamide resin produced by Beijing Xiangshan United Auxiliary Factory, 5 kilograms of active toughening agent SL-102 thermoplastic polyurethane produced by Kunshan Fine Chemical Research Institute Co., Ltd. and 47 kg of filler P042.5 Portland cement produced by Beijing Liulihe Cement Factory.

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PUM

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Abstract

The invention relates to an adhesive used to cementing tendon that is made up from bisphenol-A type epoxy resin, active thinner bisphenol A diglycerol aether, active toughening agent thermal plasticity polyurethane and filling concrete. The concreting speed could be regulated according to the actual request of the project. It has good fluidity, cohesion, and toughness.

Description

technical field [0001] The invention relates to an adhesive for slow-bonding prestressed tendons. Background technique [0002] Slow bonding prestressing technology is a new emerging technology in my country's current construction industry. At present, China Patent Application Publication No. CN1425731A discloses a kind of adhesive for slow bonding prestressed tendons, which consists of epoxy resin, plasticizer, curing agent And filler composition, wherein the curing agent is dicyandiamide or imidazole. The performance index of the adhesive for slow-bonding prestressed tendons is mainly for the corrosion protection of prestressed tendons, which deviates from the slow-bonding prestressing technology. The essence of research on the mechanical properties of prestressed tendons". [0003] Due to the characteristics of the curing agent used in the current adhesive products, the curing reaction is slow at room temperature and pressure, and it takes a long time to completely cure,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/02
Inventor 吴转琴尚仁杰范蕴蕴周建锋
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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