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Normal temperature solidifying fluorine-carbon coating for rubber roller

A room temperature curing, fluorocarbon coating technology, applied in coatings and other directions, can solve the problems of expensive fluorocarbon coatings, difficult processing control, dimensional changes, etc., and achieve good clarity.

Inactive Publication Date: 2009-10-21
深圳市明远氟建筑装饰工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the processing size of the rubber roller of the printer is very precise, the raw rubber used for the rubber roller will change in size due to the inability to withstand such a high temperature. At present, only silicone rollers can be used for the coating of one-component high-temperature curing fluorocarbon coatings without deformation , so that the choice of rubber roller raw materials is greatly limited
In addition, due to the expensive raw materials of silica gel and high-temperature curing fluorocarbon coatings and the energy consumption required by high temperatures, the cost of finished rubber rollers remains high.
Although the rubber roller made of one-component high-temperature curing fluorocarbon coating has a low friction coefficient, its performance of non-stick ribbon at high temperature is not stable, which brings great difficulties to processing control, and the yield rate is relatively low. Low

Method used

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  • Normal temperature solidifying fluorine-carbon coating for rubber roller
  • Normal temperature solidifying fluorine-carbon coating for rubber roller
  • Normal temperature solidifying fluorine-carbon coating for rubber roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The composition of group A is:

[0029] Fluorocarbon resin (GK550) 67.5kg

[0030] Silicone resin (XHC-303) 7.7kg

[0031] Matting agent (ED-30) 3.7kg

[0032] Wax powder (S-232) 3.2kg

[0033] EFKA2038 0.35kg

[0034] BYK333 0.35kg

[0035] BYK-P104S 0.5kg

[0036] Butyl acetate 10.7kg

[0037] Xylene 6kg

[0038] The composition of part B is: DESMODUR N3390

[0039] The mass ratio of A and B components is 4:1

[0040] Prepare component A according to the following steps: Add 67.5kg of GK550 resin, 0.35kg of defoamer EFKA2038, 0.35kg of leveling agent BYK333, 0.5kg of wetting and dispersing agent BYK-P104S, and 6kg of xylene into the container according to the formula of component A After mixing evenly at a stirring speed of 500rpm at room temperature, slowly add 3.7kg of matting powder ED30 and 3.2kg of wax powder S-232, increase the speed of the high-speed disperser to 1500rpm, disperse for 30 minutes, and when the fineness reaches ≤30UM When adding 7.7kg o...

Embodiment 2～3

[0045] The ingredients and dosage (kg) of each component are shown in Table 2, and the preparation method is the same as in Example 1.

[0046] Table 2

[0047]

[0048] Mix the above-prepared components A and B according to the weight ratio of 4:1, and spray them on the rubber roller of the printer made of nitrile rubber after aging for 15 minutes. The thickness of the coating is controlled to be 25±2μM. And shown in Table 4.

[0049] table 3

[0050]

[0051] Table 4

[0052]

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PUM

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Abstract

The invention belongs to the technical field of surface treatment materials and discloses a room-temperature-cured fluorocarbon coating for rubber rollers. The normal temperature curing coating for rubber rollers includes component A and component B. Component A includes 50-80% of fluorocarbon resin containing hydroxyl in the molecular structure, 3-15% of silicone resin containing hydroxyl in the molecular structure, Matting powder 2-9%, wax powder 1-6%, additive 0.3-2% and solvent 10-30%, fluorocarbon resin contains 1.5%-2.5% hydroxyl group, silicone resin contains 0.5-1% hydroxyl group %; Part B is an aliphatic polyisocyanate curing agent with an isocyanate group content of 12-19.6%; the mass ratio of Part A to Part B is 3-8:1. The coating of the present invention is heated and cured at normal temperature or at low temperature, and the raw materials of the rubber rollers can be selected in various ways; the friction coefficient of the coating is 0.2 to 0.4, which meets the requirements of the surface friction coefficient of the rubber rollers of the printer; the release property of the coating: no Adhesive ribbon; 150°C, 3 seconds non-stick ribbon; paint is sprayed on the rubber roller of the printer, and the printed photos are bright in color without bleeding, color crossing, and good definition. The rubber roller has undergone 20,000 times of aging tests without exception .

Description

technical field [0001] The invention relates to coatings, in particular to a normal temperature curing fluorocarbon coating for rubber rollers. Background technique [0002] The coating used on the surface of the rubber roller of the printer requires an appropriate friction coefficient and the performance of not sticking to the ribbon at room temperature or high temperature. At present, the coating used on the surface of the rubber roller of the printer is a one-component high-temperature curing fluorocarbon coating, and its curing temperature reaches above 220°C. Since the processing size of the rubber roller of the printer is very precise, the raw rubber used for the rubber roller will change in size due to the inability to withstand such a high temperature. At present, only silicone rollers can be used for the coating of one-component high-temperature curing fluorocarbon coatings without deformation , so that the choice of rubber roller raw materials is greatly limited. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/12C09D183/00
Inventor 丁华明
Owner 深圳市明远氟建筑装饰工程有限公司