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Furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin for resin grinding tool and preparation method of furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin

A water-soluble phenolic resin, compound modification technology, used in abrasives, manufacturing tools, metal processing equipment, etc., can solve the problem that water-soluble cannot meet the requirements of resin abrasive mixing operation, low cutting and grinding performance of grinding wheels, and resin grinding quality. Poor stability and other problems, to ensure the uniformity and stability of the spread, the cutting and grinding efficiency is obvious, and the product quality is good.

Inactive Publication Date: 2015-04-08
ZHUHAI BONDRIGHT SYNTHETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the particularity of its application in the manufacture of resin abrasive tools and the lack of production technology, some phenolic resins on the market still have some defects, such as low solid content of phenolic resin, and water solubility cannot meet the requirements of resin abrasive mixing operations. , and in the process of making resin abrasives, it is easy to be unsuitable for various mixing equipment and there are many mixing heads, and the cutting and grinding performance of the grinding wheel is low, which makes the resin grinding made of phenolic resin poor in quality stability and fast in performance decay

Method used

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  • Furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin for resin grinding tool and preparation method of furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The water-soluble phenolic resin comprises the following components in parts by mass: 100 parts of phenol; 10 parts of furfuryl alcohol; 120 parts of formaldehyde; 10 parts of urea, 1 part of humectant; 1.2 parts of basic catalyst; share. The concentration of the formaldehyde is 37%, and the molar ratio of the phenol to the formaldehyde is 1:1.2-2. The humectant is methanol, glycol or polyhydric alcohol and the like. The basic catalyst is divalent barium salt, carbonate, calcium hydroxide or sodium hydroxide and the like. The novel coupling agent is a silane coupling agent, such as KH-550, KH-602, KH-590, KH-892 and the like.

[0031] Weigh each raw material according to the above-mentioned ratio of parts by mass, and prepare according to the following steps:

[0032] (1) Add phenol, formaldehyde and 20% to 50% furfuryl alcohol to the reactor;

[0033] (2) Add a basic catalyst to the reactor;

[0034] (3) Heating, so that the material in the reactor is heated slowl...

Embodiment 2

[0040] The water-soluble phenolic resin comprises the following components in parts by mass: 100 parts of phenol; 25 parts of furfuryl alcohol; 150 parts of formaldehyde; 20 parts of urea, 6 parts of humectant; 2 parts of basic catalyst; share. The concentration of the formaldehyde is 37%, and the molar ratio of the phenol to the formaldehyde is 1:1.2-2. The humectant is methanol, glycol or polyhydric alcohol and the like. The basic catalyst is divalent barium salt, carbonate, calcium hydroxide or sodium hydroxide and the like. The novel coupling agent is a silane coupling agent, such as KH-550, KH-602, KH-590, KH-892 and the like.

[0041] Various raw materials were weighed according to the above-mentioned proportions in parts by mass, and prepared with the same process steps as described in Example 1.

Embodiment 3

[0043] The water-soluble phenolic resin comprises the following components in terms of parts by mass: 100 parts of phenol; 35 parts of furfuryl alcohol; 180 parts of formaldehyde; 30 parts of urea, 10 parts of humectant; 3 parts of basic catalyst; share. The concentration of the formaldehyde is 37%, and the molar ratio of the phenol to the formaldehyde is 1:1.2-2. The humectant is methanol, glycol or polyhydric alcohol and the like. The basic catalyst is divalent barium salt, carbonate, calcium hydroxide or sodium hydroxide and the like. The novel coupling agent is a silane coupling agent, such as KH-550, KH-602, KH-590, KH-892 and the like.

[0044] Various raw materials were weighed according to the above-mentioned proportions in parts by mass, and prepared with the same process steps as described in Example 1.

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Abstract

The invention aims at providing furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin for a resin grinding tool and a preparation method of the furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin, wherein the furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin is proper in molar ratio, high in solid content, good in water solubility, low in free phenol content, stable in performance and reduced in performance degradation. The furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin comprises the following components in parts by mass: 100 parts of phenol, 10-35 parts of furfuralcohol, 120-180 parts of formaldehyde, 10-30 parts of urea, 1-10 parts of a moisturizing agent, 1.2-3.0 parts of an alkaline catalyst and 0.1-2 parts of a novel coupling agent. The preparation method of the phenol-formaldehyde resin comprises the following steps of (1) adding phenol, formaldehyde and part of furfuralcohol; (2) adding the alkaline catalyst; (3) heating; (4) adding part of the urea; (5) heating, adding the left furfuralcohol and urea, and stirring until the water solubility conforms to the standard; (6) cooling, reducing water, dehydrating, and adding the novel coupling agent; and (7) and carrying out reduced-pressure dehydration to obtain the furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin. The furfuralcohol and urea composite modified water-soluble phenol-formaldehyde resin is applied to the field of friction materials.

Description

technical field [0001] The invention relates to a modified phenolic resin, in particular to a water-soluble liquid phenolic resin compound modified with furfuryl alcohol and urea for resin abrasive tools and a preparation method of the phenolic resin. Background technique [0002] Due to its good comprehensive performance, phenolic resin is widely used in the manufacture of resin abrasive tools. However, due to the particularity of its application in the manufacture of resin abrasive tools and the lack of production technology, some phenolic resins on the market still have some defects, such as low solid content of phenolic resin, and water solubility cannot meet the requirements of resin abrasive mixing operations. , and in the process of making resin abrasives, it is easy to be unsuitable for various mixing equipment and mixing heads, and the cutting and grinding performance of the grinding wheel is low, which makes the resin grinding made of phenolic resin poor in qua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/28C08G8/10B24D3/28
Inventor 李凯王扎根李保乡
Owner ZHUHAI BONDRIGHT SYNTHETIC MATERIAL
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