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A kind of low voc environment-friendly concrete interface treatment agent and preparation method thereof

A technology of environmental protection concrete and interface treatment agent, which is applied in the field of interface agent, can solve problems such as difficult to meet people's environmental protection needs, strict environmental protection standards, and unsatisfaction, and achieve the effect of abundant quantity, high volatility and uniform distribution

Active Publication Date: 2020-12-29
MEICHAO GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Liquid interface agents are often used in architectural interior decoration, but volatile small molecular organic compounds inevitably exist in the emulsions and additives used in them, which makes the total content of volatile organic compounds (volatile organic compounds, VOCs) in the product higher, difficult to To meet people's environmental protection needs, but unable to meet increasingly stringent environmental protection standards, reducing VOCs content is the goal of current technological development, and it is also the main problem that needs to be solved urgently in scientific research and production in recent years

Method used

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  • A kind of low voc environment-friendly concrete interface treatment agent and preparation method thereof
  • A kind of low voc environment-friendly concrete interface treatment agent and preparation method thereof
  • A kind of low voc environment-friendly concrete interface treatment agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] (1) Preparation of terminal vinyl and carboxyl hyperbranched polyester:

[0053] Add 33.3 grams of trimethylolpropane into the reactor, raise the temperature to 140°C, add dimethylol propionic acid in three steps, first add 100 grams of dimethylol propionic acid, mix well and then add 0.7 grams of p-toluenesulfonate Acid, stir under reduced pressure and react until no bubbles are produced, add 200 grams of dimethylol propionic acid, mix well and then stir under reduced pressure until no bubbles are produced, add 400 grams of dimethylol propionic acid, mix well and reduce Stir under pressure until no bubbles are produced, add 700 grams of N,N-dimethylformamide, after the solid intermediate product dissolves, add 49.7 grams of succinic anhydride, react at 80°C for 12 hours, then add 178.9 grams of acrylic acid, and then add 178.9 grams of acrylic acid at 80°C React for 6 hours, after cooling down to room temperature, wash with water until the product is neutral, put it in...

Embodiment 2

[0057] First add 8kg of water into the dissolution kettle, add 0.3kg of polyvinyl alcohol into the dissolution kettle under stirring to dissolve, then send the dissolved polyvinyl alcohol aqueous solution into the polymerization kettle, add 20g of emulsifier and stir evenly, then heat up to 70°C, Evenly drip 20g ammonium persulfate and 1.41kg vinyl acetate to polymerization kettle, dropwise reaction time is 6 hours, after adding the sepiolite of 10g graft end vinyl and carboxyl hyperbranched polyester, continue reaction 2 hours, After adding 15g of sodium bicarbonate, cool down to 50°C, add 10g of polyethyleneimine and 10g of trimethylolpropane-tris(3-aziridinyl propionate), react for 2 hours, then add 0.2kg of plasticizer And 10g preservative, discharge after being down to room temperature, promptly obtain interface treating agent, described emulsifying agent is alkoxy polyethylene hydroxide ethanol, and described plasticizer is diethylene glycol dibenzoate, described The pre...

Embodiment 3

[0060] First add 8kg of water into the dissolution kettle, add 0.3kg of polyvinyl alcohol into the dissolution kettle under stirring to dissolve, then send the dissolved polyvinyl alcohol aqueous solution into the polymerization kettle, add 20g of emulsifier and stir evenly, then heat up to 70°C, Evenly drip 20g ammonium persulfate and 1.41kg vinyl acetate to polymerization kettle, dropwise reaction time is 6 hours, after adding the sepiolite of 20g graft end vinyl and carboxyl hyperbranched polyester, continue reaction 2 hours, After adding 15g of sodium bicarbonate, cool down to 50°C, add 20g of polyethyleneimine and 20g of trimethylolpropane-tris(3-aziridinyl propionate), react for 2 hours, then add 0.2kg of plasticizer And 10g preservative, discharge after being down to room temperature, promptly obtain interface treating agent, described emulsifying agent is alkoxy polyethylene hydroxide ethanol, and described plasticizer is diethylene glycol dibenzoate, described The pre...

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Abstract

The invention provides a low-VOC (Volatile Organic Compound) environment-friendly concrete interface treating agent. The low-VOC environmental-friendly concrete interface treating agent is prepared by cross-linking reaction of sepiolite with grafted end vinyl and carboxylhyperbranched polyester, vinyl acetate-vinyl copolymer emulsion, polyethyleneimine and trimethylolpropane-tri(3-aziridinyl propionate). The low-VOC environmental-friendly concrete interface treating agent provided by the invention has the advantages that the VOC is lower, the viscosity is good, and the problems of high volatilization and environmental pollution in the traditional interface treating agent are effectively solved.

Description

technical field [0001] The invention relates to the technical field of interface agents, in particular to a low-VOC environment-friendly concrete interface treatment agent and a preparation method thereof. Background technique [0002] Concrete interface treatment agent is also called concrete interface adhesive, interface treatment agent, etc., referred to as interface agent. It is a surface treatment material used to enhance the surface performance of concrete, and it is a functional adhesive. Engineering practice has proved that the use of concrete interface treatment agent is an effective technical measure to prevent shelling, separation and peeling of the plaster layer and the base wall. The use and development of interface treatment agents has been rapid in recent years. In order to standardize product performance and ensure project quality, my country issued the building materials industry standard JC 907-2002 for concrete interface treatment agents in 2002. The int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C08F292/00C08F2/30C08J3/24C04B24/24C08L87/00C08L79/02
CPCC04B24/24C04B40/0039C08F2/30C08F292/00C08G83/005C08G83/006C08J3/246C08J2387/00C08J2479/02C08F218/08C04B2103/30C04B2103/61
Inventor 王兴元
Owner MEICHAO GROUP
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