A kind of high moisturizing phenolic resin and preparation method thereof

A technology of phenolic resin and high moisture retention, applied in the field of phenolic resin, can solve problems such as long construction period, difficult to use, performance decline, etc., and achieve the effect of improving moisture retention

Active Publication Date: 2022-07-29
河北泽田化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What determines the moisturizing performance of phenolic resin is its methylol content. The methylol content of the currently used phenolic resin is 22-32%. Sample block, the body density is 2.8-3g / cm -3 ; If the storage time exceeds this period, it will be difficult to form the sample block, and the body density will be lower than 2.8g / cm -3 , its performance will be severely degraded and difficult to meet the needs of use
However, due to the long production and supply cycle of the refractory material factory and the long construction period of the iron trench in the steel plant, the iron trench material prepared by the currently used phenolic resin can no longer meet the requirements of use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] Example 1: Synthesis of High Moisturizing Phenolic Resin:

[0028] Turn on stirring, then under -0.08Mpa vacuum state, pump 100Kg of preheated phenol into the reactor, then pump 10Kg of water into the reactor, then change the reactor to normal pressure, add 6Kg of hydroxide The barium powder was heated up to 58°C in 30 minutes, 35Kg of solid formaldehyde (content 92%) was added in stages, the solid formaldehyde was added in 1.5 hours, and the temperature in the reaction kettle was carefully controlled. After adding solid formaldehyde, slowly heat up to 59°C in 5-10 minutes, keep the reaction at 58-59°C until the polymerization speed reaches 130-135 seconds / 150°C, cool down to 50°C with circulating water, add 11.4Kg of dilute sulfuric acid (content 30°C). %) for neutralization, the pH reaches 7.1, the resin is filtered through a plate and frame filter to filter out the suspended impurities in the resin, and then the resin enters the dehydration kettle, adds 10 parts of e...

example 2

[0029] Example 2: Synthesis of High Moisturizing Phenolic Resin:

[0030] Turn on stirring, then under -0.08Mpa vacuum state, 100Kg of preheated phenol is pumped into the reactor, then 20Kg of water is pumped into the reactor, then the reactor is changed to normal pressure state, and 7Kg of hydroxide is added The barium powder was heated and heated to 58°C in 30 minutes, 36.5Kg of solid formaldehyde (content 92%) was added in stages, and the solid formaldehyde was added in 1.5 hours, paying attention to controlling the temperature in the reaction kettle. After adding solid formaldehyde, slowly heat up to 59°C in 10 minutes, keep the reaction at 58~59°C until the polymerization speed reaches 130-135 seconds / 150°C, cool down to 50°C with circulating water, add 11.5Kg of dilute sulfuric acid (content 35%) Neutralize, the pH reaches 7.3, filter the resin through the plate and frame filter, filter out the suspended impurities in the resin, and then enter the resin into the dehydrat...

example 3

[0031] Example 3: Synthesis of High Moisturizing Phenolic Resin:

[0032] Turn on stirring, and then pump 100Kg of preheated phenol into the reactor under -0.08Mpa vacuum state, then pump 25Kg of water into the reactor, then change the reactor to the normal pressure state, add 7.5Kg hydrogen The barium oxide powder was heated up, heated to 58°C in 30 minutes, 36Kg of solid formaldehyde (content 92%) was added in stages, and the solid formaldehyde was added in 1.5 hours, paying attention to controlling the temperature in the reaction kettle. After adding solid formaldehyde, slowly heat up to 59°C for 10 minutes, keep the reaction at 58~59°C until the polymerization speed reaches 130-135 seconds / 150°C, cool down to 50°C with circulating water, add 10.2Kg of dilute sulfuric acid (content 42%) Neutralize, the PH reaches 7.5, filter the resin through the plate and frame filter, filter out the suspended impurities in the resin, and then enter the resin into the dehydration kettle, a...

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PUM

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Abstract

The invention belongs to the technical field of preparation of phenolic resin, and specifically discloses a high moisturizing phenolic resin and a preparation method thereof. That is, start the stirring mechanism, pump the preheated phenol into the reaction kettle in a vacuum state, pump water into the reaction kettle in proportion, add a catalyst, heat up, and when the temperature reaches 58 ℃, add solid formaldehyde in batches, After adding solid formaldehyde, slowly heat up to 59°C, keep the temperature at 58-59°C for 240 minutes, cool down to 50°C, add sulfuric acid for neutralization, pH reaches 7-7.5, filter the resin through a plate-and-frame filter, and filter out The impurities are suspended in the resin, and then the resin enters the dehydration kettle for vacuum dehydration, and the viscosity is adjusted to 5-8pa by adding a solvent, then a silane coupling agent is added, and the material is discharged to obtain a phenolic resin with a methylol content of 38-45%. The iron groove material produced by using the phenolic resin is placed for 20-30 days, and the volume density of the compact sample block is 2.8-3g / cm ‑3 During the period, the production and supply cycle and the construction cycle of the iron ditch of the steel plant were extended.

Description

technical field [0001] The invention belongs to the technical field of phenolic resins, and discloses a high moisturizing phenolic resin for preparing iron groove materials and a preparation method thereof. Background technique [0002] The iron trench material is the refractory material used in the lining or repair of the blast furnace tapping trench. The iron trench lining iron trench material is composed of refractory castables and refractory ramming materials, and the iron trench repairing iron trench material is composed of refractory ramming materials. They are all amorphous refractories. The iron groove material is made by using fused corundum, silicon carbide and fixed carbon as refractory aggregate, adding phenolic resin and performance modifier through mixing. [0003] As a refractory product, iron groove material usually takes a certain amount of time from production to lining or repairing iron hook construction and use, that is, it will generally be delayed for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/28C08G8/10C08L61/10C08K5/544C08K5/5435
CPCC08G8/10C08K5/544C08K5/5435C08L61/06
Inventor 李晓贺胡春红孙国秀刘康李世聪袁建旭
Owner 河北泽田化工有限公司
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