High-efficiency composite grinding sheet and manufacturing method thereof
A kind of abrasive sheet and high-efficiency technology, applied in the direction of grinding/polishing equipment, abrasive materials, grinding devices, etc., can solve the problems of red steel paper damage, sand disc cracking, etc., achieve long service life, comprehensive performance, and improve drying speed Effect
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Embodiment 1
[0040] A high-efficiency composite abrasive sheet, including a base material, a primer, an abrasive and a refill, the abrasive is attached to the base material through the primer and the refill,
[0041] The primer includes the following components by weight percentage: phenolic resin A: 35%, phenolic resin B: 25%, filler: 22%, surfactant: 0.5%, diluent: 10%, coupling agent: 0.5%, barrier Combustion agent: 7%, the sum of the above components is 100%;
[0042] Phenolic resin A is a water-soluble resole phenolic resin with a low formaldehyde / phenol molar ratio. The phenol content is 3%; the phenolic resin B is a water-soluble resole phenolic resin with a moderate formaldehyde / phenol molar ratio, and its indicators are as follows: solid content 86%, viscosity 3000cps / 25°C, pH 6.5 / 25°C, gel time 8min / 150℃, free phenol content 10%; filler is diatomaceous earth; the surfactant is sorbitol fatty acid ester; diluent is ethyl acetate; coupling agent is silane coupling agent; flame ret...
Embodiment 2
[0061] A high-efficiency composite abrasive sheet, including a base material, a primer, an abrasive and a refill, the abrasive is attached to the base material through the primer and the refill,
[0062] The primer includes the following components by weight percentage: phenolic resin A: 33%, phenolic resin B: 24%, filler: 25%, surfactant: 0.6%, diluent: 9%, coupling agent: 0.4%, barrier Combustion agent: 8%, the sum of the above components is 100%;
[0063] Phenolic resin A is a water-soluble resole phenolic resin with a low formaldehyde / phenol molar ratio. Its indicators are as follows: solid content 83%, viscosity 1800cps / 25°C, pH 7.5 / 25°C, gel time 14min / 140°C, free phenol Content 4.5%; phenolic resin B is a water-soluble resole phenolic resin with a medium formaldehyde / phenol molar ratio, and its indicators are as follows: solid content 85%, viscosity 3200cps / 25℃, pH 6 / 25℃, gel time 7min / 150 ℃, free phenol content 9%; filler is chalk; surfactant is aliphatic sulfonate; d...
Embodiment 3
[0082] A high-efficiency composite abrasive sheet, comprising a base material, a primer, an abrasive and a compound, the abrasive is attached to the base material through the primer and the compound,
[0083] The primer includes the following components by weight percentage: phenolic resin A: 34%, phenolic resin B: 24%, filler: 24%, surfactant: 1.0%, thinner: 10%, coupling agent: 1.0%, barrier Combustion agent: 6%, the sum of the above components is 100%;
[0084] Phenolic resin A is a water-soluble resole phenolic resin with a low formaldehyde / phenol molar ratio. Its indicators are as follows: solid content 81%, viscosity 1900cps / 25°C, pH 7.9 / 25°C, gel time 13min / 140°C, free phenol The content is 4%; phenolic resin B is a water-soluble resole phenolic resin with a medium formaldehyde / phenol molar ratio, and its indicators are as follows: solid content 85.5%, viscosity 3100cps / 25°C, pH 6.2 / 25°C, gel time 7.5min / 150℃, free phenol content 9.5%; filler is light calcium; surfact...
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