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Novolac epoxy scraper and manufacturing method thereof

A novolac epoxy resin and manufacturing method technology, applied in the direction of scraper, paper making, paper machine, etc., can solve the problems of downtime, poor temperature resistance, stained with black marks, etc., and achieve reasonable process route, strong straightness, and low cost Effect

Active Publication Date: 2010-09-08
彭俊超 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the scrapers used in papermaking machinery are steel scrapers or epoxy resin scrapers. During the production process, steel scrapers are hard and have poor toughness, which can easily scratch the rollers. In this way, manufacturers waste time in repairing rollers and cause a lot of economic losses. ;Epoxy resin scraper is brittle and has poor temperature resistance. During use, the blade can easily become jagged and scratch the blanket, causing shutdown. Poor temperature resistance makes the blade soft, and the dirt on the roller cannot be scraped off. When making writing paper with graphite powder, it is easy to fade and cause black marks on the white paper, so it is scrapped and causes serious waste.

Method used

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  • Novolac epoxy scraper and manufacturing method thereof
  • Novolac epoxy scraper and manufacturing method thereof
  • Novolac epoxy scraper and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1 is shown in Fig. 1, Fig. 2, Fig. 3

[0041] One, a kind of manufacture method of phenolic epoxy resin scraper, its steps are as follows:

[0042] (1) Preparation of scraper base material: resin glue is used as the base material, and the components by weight of the resin glue are as follows: 38 parts of NPPN638S novolac epoxy resin, 2 parts of epoxy resin toughening agent, 5 parts of dicyandiamide, 0.005 parts of imidazole, 14 parts of dimethylformamide, 10 parts of acetone, 15 parts of silicon micropowder, 1.5 parts of molybdenum disulfide;

[0043] (2) The multi-layer carbon fiber cloth is glued at a high temperature of 160 degrees, and then pressed and cured at a temperature of 260 degrees and a pressure of 80 kilograms per square centimeter.

[0044] Two, the shape structure of a kind of phenolic epoxy resin scraper is as follows:

[0045] The novolak epoxy resin scraper manufactured by the above-mentioned base material has a structural form: the lengt...

Embodiment 2

[0046] Embodiment 2 is shown in Fig. 1, Fig. 4, Fig. 5

[0047] One, a kind of manufacture method of phenolic epoxy resin scraper, its steps are as follows:

[0048] (1) Preparation of scraper base material: resin glue is used as the base material, and the component weight ratio of the resin glue is as follows: 42 parts of KEP-1138 novolac epoxy resin, 2 parts of epoxy resin toughening agent, 5 parts of dicyandiamide 0.006 parts of imidazole, 15 parts of dimethylformamide, 10 parts of acetone, 16 parts of microsilica powder, and 1.5 parts of molybdenum disulfide;

[0049] (2) The multi-layer glass fiber cloth is glued at a high temperature of 160 degrees, and then pressed and cured at a temperature of 260 degrees and a pressure of 80 kilograms per square centimeter.

[0050] Two, the shape structure of a kind of phenolic epoxy resin scraper is as follows:

[0051] The novolac epoxy resin scraper manufactured by the above-mentioned base material has a structural form: the len...

Embodiment 3

[0052] Embodiment 3 is shown in Fig. 1, Fig. 6, Fig. 7

[0053] One, a kind of manufacture method of phenolic epoxy resin scraper, its steps are as follows:

[0054] (1) Preparation of scraper base material: resin glue is selected as the base material, and the component weight ratio of the resin glue is as follows: 40 parts of F51 novolac epoxy resin, 2 parts of epoxy resin toughening agent, 5 parts of dicyandiamide, 0.007 parts of imidazole, 14 parts of dimethylformamide, 10 parts of acetone, 15 parts of silicon micropowder, and 1.5 parts of molybdenum disulfide;

[0055] (2) The multi-layer carbon fiber cloth is glued at a high temperature of 160 degrees, and then pressed and cured at a temperature of 260 degrees and a pressure of 80 kilograms per square centimeter.

[0056] Two, the shape structure of a kind of phenolic epoxy resin scraper is as follows:

[0057] The novolac epoxy resin scraper manufactured by the above-mentioned base material has a structural form: the l...

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Abstract

The invention discloses a phenolic epoxy resin scraper and a preparation method thereof, which comprises the steps of: (1) the preparation of a scraper substrate: a resin adhesive is chosen as the substrate, and the weight portions of components are as follows: 38 portions to 50 portions of F51 or NPPN638S or KEP-1138 phenolic epoxy resin, 1 portion to 3 portions of epoxy resin toughening agent, 5 portions to 12 portions of dicyandiamide, 0.003 portion to 0.008 portion of imidazole, 13 portions to 15 portions of dimethylformamide, 10 portions to 20 portions of acetone, 15 portions to 20 portions of silicon micropowder and 1.5 portions of molybdenum disulfide; and (2) a multilayer fiber cloth is treated with sizing under the high temperature of 160 DEG C, and is pressed and solidified under the rising temperature. The phenolic epoxy resin scraper made by adopting the substrate has the structural form as follows: the length of the scraper is customized as needed, the thickness of the scraper is 1.5mm to 5mm and the width of the scraper is 76mm to 200mm; the scraper is edged at one side along the length direction, and the angle of the cutting edge is 20 degrees to 60 degrees; and theside of the scraper that is not edged is provided with a connecting device. The scraper is reasonable in making method and durable in use and has the popularization value.

Description

(1) Technical field: [0001] The invention relates to a scraper and a manufacturing method thereof, in particular to a high-strength, high-toughness novolak epoxy resin scraper and a manufacturing method thereof. It belongs to the technical field of papermaking equipment supporting cutter manufacturing. (two) background technology: [0002] At present, the scrapers used in papermaking machinery are steel scrapers or epoxy resin scrapers. During the production process, steel scrapers are hard and have poor toughness, which can easily scratch the rollers. In this way, manufacturers waste time in repairing rollers and cause a lot of economic losses. ;Epoxy resin scraper is brittle and has poor temperature resistance. During use, the blade can easily become jagged and scratch the blanket, causing shutdown. Poor temperature resistance makes the blade soft, and the dirt on the roller cannot be scraped off. When making writing paper with graphite powder, it is easy to fade and caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/55D06M13/432D06M11/79D06M17/04D21G3/00D06M101/40D06M101/06D06M101/16
Inventor 彭俊超
Owner 彭俊超
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