Recyclable acrylic ester impregnant for sealed reinforcement

A technology of acrylate and infiltrating agent, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of labor, raw materials, energy waste, product quality defects, corrosion, etc., to improve the utilization rate of raw materials, good market application Prospects, the effect of reducing environmental pollution

Inactive Publication Date: 2014-07-02
NANJING AIBUNA SEALING TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These defects are generally not easy to detect, and can only be found after being machined and pressed, resulting in a serious waste of labor, raw materials, and energy; products without pressure requirements are exposed to pores due to cleaning agents, acids, etc. during surface treatment such as electroplating and painting. Cause internal corrosion, shorten service life, or cause bubbles or unevenness in surface treatment processes such as electroplating and painting due to the existence of micropores, resulting in product quality defects
[0003] However, in the current impregnation process of thermosetting acrylate impregnants, there is a section for washing parts with water. Since these washing waters contain more uncured acrylate and other components, although acrylate vacuum impregnants do not contain Volatile organic compounds, low toxicity, but the current environmental protection issues that are increasingly valued should not be ignored. The past wastewater treatment method was mainly to solidify and separate the acrylate contained in the cleaning water. Wastewater treatment was time-consuming, labor-intensive and expensive, and caused Acrylate waste in wash water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Taking a representative acrylate impregnating agent formula as an example, its composition is by weight: 17.25 parts of lauryl methacrylate, 4 parts of 1,6 hexanediol diacrylate, 2 parts of trimethylol propane triacrylate 3 parts of modified alkylphenol polyoxyethylene ether, 2.5 parts of modified polyethylene glycol, 0.75 part of azobisisobutyronitrile, and 0.01 part of hydroquinone. The specific steps are as follows:

[0011] (1) Add lauryl methacrylate, 1,6 hexanediol diacrylate, trimethylolpropane triacrylate, modified alkylphenol polyoxyethylene ether, modified polyethylene glycol, hydroquinone , stirring speed 300-600 rpm, stirring for 10-30 minutes;

[0012] (2) Add azobisisobutyronitrile, stir at 600-800 rpm, and stir for 20-40 minutes;

[0013] (3) Let stand for 10-60 minutes.

[0014] The physical properties of the acrylate impregnating agent obtained by embodiment 1 are as shown in table 1:

[0015] project

Embodiment 2

[0017] Taking a representative acrylate impregnating agent formula as an example, its composition is 15.15 parts by weight of isodecyl methacrylate, 2.27 parts of diethylene glycol dimethacrylate, trimethylolpropane triacrylate 1.76 parts of ester, 0.5 part of polyoxyethylene fatty acid ester, 1.52 parts of modified polyethylene glycol, 0.87 part of azobisisobutyronitrile, and 0.02 part of 2,5-di-tert-butylhydroquinone. The specific steps are as follows:

[0018] (1) Add isodecyl methacrylate, ethylene glycol diacrylate, trimethylolpropane triacrylate, polyoxyethylene fatty acid ester, modified polyethylene glycol, 2,5-di-tert-butyl Hydroquinone, stirring speed 300-600 rpm, stirring for 10-30 minutes;

[0019] (2) Add azobisisobutyronitrile, stir at 600-800 rpm, and stir for 20-40 minutes;

[0020] (3) Let stand for 10-60 minutes.

[0021] The physical properties of the acrylate impregnating agent obtained by embodiment 2 are as shown in table 2:

[0022] project ...

Embodiment 3

[0024] Taking a representative acrylate impregnating agent formula as an example, its composition is 16.05 parts by weight of stearyl methacrylate, 1.42 parts of triethylene glycol dimethacrylate, glyceryl trimethacrylate 2.08 parts, 0.5 parts of modified alkylphenol polyoxyethylene ether, 1.89 parts of modified polyethylene glycol, 0.80 parts of azobisisobutyronitrile, and 0.02 parts of 2,5-di-tert-butylhydroquinone. The specific steps are as follows:

[0025] (1) Add stearyl methacrylate, triethylene glycol dimethacrylate, glyceryl trimethacrylate, modified alkylphenol polyoxyethylene ether, modified polyethylene glycol, 2, 5-di-tert-butylhydroquinone, stirring speed 300-600 rpm, stirring for 10-30 minutes;

[0026] (2) Add azobisisobutyronitrile, stir at 600-800 rpm, and stir for 20-40 minutes;

[0027] (3) Let stand for 10-60 minutes.

[0028] The physical properties of the acrylate impregnating agent obtained by embodiment 3 are as shown in table 3:

[0029] ...

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Abstract

The invention discloses a recyclable acrylic ester impregnant for sealed reinforcement. The recyclable acrylic ester impregnant is obtained by uniformly mixing the following components in parts by weight: 20-24 parts of a monofunctional acrylate monomer of which the specific gravity is less than 1g/cm<3>, 1-5 parts of a difunctional acrylate monomer, 1-3 parts of a reactive emulsifier, 0.05-0.25 parts of an initiating agent and 0.01-0.06 part of a polymerization inhibitor at normal temperature. The impregnant is a colorless and transparent oily liquid of which the specific gravity is 0.840-0.993g/cm<3>, the gelation time is 240s-360s, and the viscosity is less than 8.03mPa.s; the hardness of a glue stick after solidifying is greater than 65 ShoreA; and the impregnant is low in viscosity and low in toxicity, and meanwhile has relatively good recycling circulating performance.

Description

technical field [0001] The invention relates to a recyclable acrylate type vacuum impregnating agent for sealing reinforcement. Background technique [0002] In industrial production, pressure-bearing sealing castings occupy a large proportion. During the casting process of metal castings, due to crystal shrinkage and gas residues, defects such as looseness, pores, and the like are prone to occur inside the castings, resulting in the product being scrapped due to leakage. According to statistics, the rejection rate of pressure-bearing castings can be as high as 6-20%, and the rejection rate of some castings that bear gas and hydraulic pressure, such as cylinder heads and valve bodies, can reach more than 30%. These defects are generally not easy to detect, and can only be found after being machined and pressed, resulting in a serious waste of labor, raw materials, and energy; products without pressure requirements are exposed to pores due to cleaning agents, acids, etc. dur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F222/14C09K3/10
Inventor 王博张新港
Owner NANJING AIBUNA SEALING TECH CO LTD
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