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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

Active Publication Date: 2014-03-05
JIANGSU FENGMANG COMPOUND MATERIAL SCI&TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the sand discs used in China are generally red steel paper sand discs, that is, the base material is red steel paper, but the red steel paper sand discs will absorb moisture when used, especially in summer, which will reduce the toughness of the red steel paper sand discs and eventually lead to The sand disc cracks, so many manufacturers use the form of adding glass fiber mesh in the middle to improve the toughness of the sand disc. For example, patent CN201420209Y proposes a new steel paper base paper, which is mainly coated on the surface of the steel paper with a layer of The strong fiber layer made of cotton fiber makes the base paper have strong water absorption. Patent CN201276524Y proposes a resin laminate grinding sheet, mainly by setting an epoxy resin glass fiber laminate with 5 layers to improve deformation. , mechanical strength, impact strength, toughness and other properties, but this increased glass fiber mesh will generate a lot of dust during the grinding process, and at the same time, due to the increase in hardness, the red steel paper that is easy to splash during grinding will cause injury to the staff

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a high-efficiency composite grinding sheet and a manufacturing method thereof. The high-efficiency composite grinding sheet comprises a base material, base gel, an abrasive material and composite gel. The abrasive material is attached to the base material through the base gel and the composite gel, the back of selected steel vulcanized fiber paper is coated with the base gel through at least one of the methods of roller painting, blade coating and flat coating; the selected abrasive material is ground into abrasive material particles which are evenly mixed with the composite gel, and then the back of the selected steel vulcanized fiber paper with the base gel is coated with the mixture; a semi-finished product coated with the base gel and the composite gel is detached and sequentially undergoes a post curing process, a flexure and water entrainment process, a laser cutting process, a steel vulcanized fiber paper anti-deformation processing process and a storing process so as to support a grinding sheet finished product. The grinding sheet is sharp, long in service life, resistant to high temperature after being ground, and good in moisture resistance. The manufacturing method can effectively prevent deformation, and the product is large in tensile strength, good in adhesion and strong in grinding performance.

Description

technical field [0001] The invention belongs to the field of coated abrasives, and relates to an abrasive sheet and a preparation method thereof, in particular to a high-efficiency composite abrasive sheet and a preparation method thereof. Background technique [0002] Abrasive sheet refers to the use of ultra-precision coating technology to uniformly disperse selected micron or nano-sized grinding powder (diamond, silicon carbide, aluminum oxide, silicon oxide, cerium oxide, etc.) The surface of the base material is then processed by a high-precision cutting process. Abrasive sheets are used in a wide range of fields, such as optical communications, micro-motors, and hard disks. For example, the steel paper sand disc currently used in the market, the steel paper sand disc is also called a steel paper grinding disc, a high-speed grinding disc, and a grinding disc. Disc coated abrasives. It has high tensile strength and strong wear resistance. It can be installed on electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00B24D3/28B24D3/34
Inventor 王荣生
Owner JIANGSU FENGMANG COMPOUND MATERIAL SCI&TECH GRP CO LTD
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