Thermo-setting transfer mould release agent and method for preparing and using same

A release agent and transfer printing technology, which is applied in the direction of copying/marking, printing, coating, etc., can solve the problems of hard and brittle release layer, poor layability, and affect the transfer effect, and achieve excellent solvent resistance and resistance Friction performance, effect of protective pattern

Inactive Publication Date: 2012-06-13
XIAMEN HOWER MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many resin-type release agents have poor layability, and the release layer is hard and brittle after film formation, which is only suitable for transfer on hard surfaces
And the resin-type release agent is not resistant to

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In parts by weight: get 22 parts of fluorocarbon resin, 60.7 parts of C 4 -C 8 Alkanes, 10 parts of polytetrafluoroethylene powder, 0.3 parts of defoamer, 2 parts of leveling agent, 3 parts of peeling aid, 2 parts of matting powder. The mixture of the above ingredients is marked as A component;

[0039] Polyisocyanate (MDI) is marked as B component. The weight ratio of polyisocyanate to fluorocarbon resin is 1:8, that is, 2.75 parts of polyisocyanate;

[0040] Follow the steps below to prepare a thermosetting transfer release agent:

[0041] a) put C 4 -C 8 Pour alkanes and polytetrafluoroethylene powder into the barrel, stir at a low speed of 300-400 rpm;

[0042] b) Add the fluorocarbon resin into the mixing tank while stirring, at a speed of 300-400 rpm, and stir evenly;

[0043] c) Add defoamer, leveling agent, peeling aid and matting powder into the barrel respectively, rotate at 500-600 rpm, stir for 15 minutes, and then get A component;

[0044] d) Stir t...

Embodiment 2

[0049] In parts by weight: get 30 parts of fluorocarbon resin, 53.7 parts of C 4 -C 8 Alkanes, 10 parts of polytetrafluoroethylene powder, 0.3 parts of defoamer, 2 parts of leveling agent, 3 parts of peeling aid, 1 part of matting powder. The mixture of the above ingredients is marked as A component;

[0050] Polyisocyanate (MDI) is marked as B component. The weight ratio of polyisocyanate to fluorocarbon resin is 1:8, that is, 3.75 parts of polyisocyanate;

[0051] According to the step in embodiment 1, thermosetting transfer printing release agent is prepared;

[0052] In this embodiment, the stripping aid is modified silicone oil, the defoamer is a silicone defoamer, the matting powder is silicon dioxide, the leveling agent is polysiloxane-polyether copolymer, and the stripping aid is wax powder;

[0053] The release film formed by curing the thermosetting transfer release agent prepared in this example has excellent solvent resistance and friction resistance, and can ...

Embodiment 3

[0055] In parts by weight: get 35 parts of fluorocarbon resin, 51.5 parts of C 4 -C 8 Alkanes, 6 parts of polytetrafluoroethylene micropowder, 0.5 parts of defoamer, 2 parts of leveling agent, 3.5 parts of peeling aid, 1.5 parts of matting powder. The mixture of the above ingredients is marked as A component;

[0056] Component B: 4.375 parts of polyisocyanate (MDI);

[0057] According to the step in embodiment 1, thermosetting transfer printing release agent is prepared;

[0058] In this embodiment, the stripping aid is modified silicone oil, the defoamer is a silicone defoamer, the matting powder is silicon dioxide, the leveling agent is polysiloxane-polyether copolymer, and the stripping aid is wax powder;

[0059] The release film formed by curing the thermosetting transfer release agent prepared in this example has excellent solvent resistance and friction resistance, and can be used repeatedly.

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PUM

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Abstract

The invention provides a thermo-setting transfer mould release agent. The thermo-setting transfer mould release agent comprises polyisocyanates and an ingredient, wherein the ingredient comprises the following components in part by weight: 15 to 45 parts of fluorocarbon resin, 2 to10 parts of polytetrafluoroethylene micro powder, 40 to 62 parts of C4-C8 alkane, 0.2 to 0.5 part of antifoaming agent, 1 to 3 parts of flatting agent, 1 to 5 parts of release auxiliaries, and 1 to 4 parts of flatting silica, wherein the weight ratio of the polyisocyanates to the fluorocarbon resin is 1 to 8. and the method for preparing and using the mould release agent is as follows: adding the fluorocarbon resin while agitating the C4-C8 alkane and the polytetrafluoroethylene; adding the antifoaming agent, the flatting agent, the release auxiliaries and the flatting silica, and then agitating the mixture; and, regulating the weight ratio of the fluorocarbon resin to the polyisocyanates in the product to be 8 to 1. The acquired mould release agent is coated on a PET (Polymer) film by a mesh plate and then dried for the use. The mould release agent is not transferred after being transfer-printed, so that the performances of the printing oil are not affected; the bottom film has no change after transfer-printing, and the friction resistant and solvent resistant performances are very good.

Description

technical field [0001] The invention relates to a transfer printing release agent, in particular to a thermosetting transfer printing release agent and a preparation and use method thereof. Background technique [0002] At present, the thermal transfer release agents on the market are mainly resin type and wax type. The basic principle of thermal transfer release agent in use is: the thermal transfer film is separated from the carrier film under heat and pressure, and then firmly transferred to the substrate. [0003] Wax release agent is the most widely used release agent. But part of the wax in the wax release agent will migrate with the pattern, and the melted wax will penetrate into the ink, thus affecting the color. Therefore, the adhesion on the PET surface is not good, and it is also not resistant to solvents. During the transfer process, too high or too low temperature will affect the transferred pattern. Many resin-type release agents have poor layability, and t...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12C08G18/62C08J7/04C08L67/02B41M5/395
Inventor 蔡锦云李步龙倪阳符维强
Owner XIAMEN HOWER MATERIAL
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