Recyclable acrylic ester impregnant for sealed reinforcement

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...

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