Phenolic resin for coating abrasive tools and preparation method thereof
A technology of phenolic resin and coated abrasives, which is applied in the field of phenolic resin and its preparation, can solve the problems of heat resistance, wear resistance and impact resistance, poor bonding performance, etc., and achieve comprehensive cost reduction and improvement Adhesive performance, effect of reducing production cost
Active Publication Date: 2010-04-14
JIANGSU FENGMANG COMPOUND MATERIAL SCI&TECH GRP CO LTD
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Problems solved by technology
[0012] Although the above known phenolic resins have their own advantages, they also have shortcomings in the application of coated abras
Method used
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Experimental program
Comparison scheme
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Example Embodiment
[0034] Example one
[0035] First, 60 parts of phenolic resin A are prepared using traditional technology, and then mixed with 40 parts of high-strength active phenolic resin B at 50°C to form the main material, and stirred for about 15 minutes; then after cooling to 40°C, 0.8 parts of inorganic active additives are added to it Iron sulfide, stir for 10 minutes; then slowly add 19.7 parts of inorganic filler calcium carbonate (particle size> 300 mesh), and quickly stir for about 20 minutes until uniform; reduce the temperature to below 35 ℃, and finally add 3 parts of thermoplastic acrylate resin and 4 parts of ethanol and The mixed solvent of water (ethanol:water=1:1) undergoes high-speed stirring for physical and chemical reactions, the viscosity is controlled at 2000-2500cps / 25°C, and the material is filtered out.
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The invention relates to a phenolic resin for coating abrasive tools and a preparation method thereof. The preparation method comprises the following steps: firstly preparing a water soluble phenolic resin through the addition polycondensation reaction of a compound of phenol, aldehyde and the like in the presence of an alkali catalys, then mixing the prepared phenolic resin with a high-strength active phenolic resin at 45-60 DEG C to constitute a major ingredient, stirring for about 10-35 minutes; cooling to 30-40 DEG C, adding at least one inorganic active additive in the major ingredient and stirring for 5-30 minutes; slowly adding at least one inorganic filler and rapidly stirring for 10-40 minutes; reducing the temperature below 30 DEG C, finally adding at least one thermal-plasticity resin to mix with a mixed solvent, mixing at high speed to carry out physical-chemical reaction, controlling the viscosity at 2000-2500 cps/25 DEG C, and filtrating and discharging. The modified phenolic resin reduces the production cost and improves the adhesive bonding performance of products as well as the heat resistance performance, the wear resistance performance and the impact resistance performance of the products.
Description
Technical field [0001] The invention relates to a phenolic resin and a preparation method thereof, in particular to a phenolic resin for coated abrasive tools and a preparation method thereof. Background technique [0002] With the rapid development of the coated abrasives industry, the market has gradually increased the performance requirements of products. As one of the three major components of coated abrasives, the adhesive has played an important role, and its research and development have been continuous. [0003] The patent with publication number CN1377916A proposes a water-soluble phenolic resin / nano-clay composite and its preparation method. The layered nano-silicate clay is mainly used in the preparation of phenolic resin. The product has excellent bonding strength. , It is the raw material for manufacturing reinforced abrasive sheet, emery cloth, abrasive belt, sandpaper and coated abrasive tools. [0004] The patent with publication number CN1799771A proposes a manufac...
Claims
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Inventor 王鹏王荣生
Owner JIANGSU FENGMANG COMPOUND MATERIAL SCI&TECH GRP CO LTD
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