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Acrylic primer suitable for polyvinylidene fluoride (PVDF) finish paint and preparation method thereof

A technology of acrylic and acrylic resin, applied in the direction of coating, etc., can solve the construction performance, water resistance, weather resistance, acid and alkali resistance, low hardness, high chemical resistance and weather resistance, chemical resistance, Poor weather resistance and other problems, to achieve the effect of improving T-bend performance, improving interlayer adhesion, and prolonging the service life

Active Publication Date: 2013-03-20
SUZHOU COLOR WAY ENTERPRISE DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the matching primers for PVDF topcoats use polyurethane primers or epoxy primers or thermoplastic fluorine-containing primers (thermoplastic acrylic resins with PVDF resin primers), among which polyurethane primers or epoxy primers have the greatest impact on construction performance. , water resistance, weather resistance, acid and alkali resistance, hardness, etc. are not as good as acrylic amino baking paint, so the requirements for chemical resistance and weather resistance of PVDF topcoat are particularly high, and it is difficult to achieve the outdoor weather resistance of PVDF coatings for 20 years. Requirements: The fluorine-containing primer made of thermoplastic acrylic resin and PVDF resin will yellow when the thermoplastic acrylic resin is baked at high temperature, which affects the performance of the coating film, and does not participate in the cross-linking reaction during curing, so its chemical resistance, Poor weather resistance

Method used

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  • Acrylic primer suitable for polyvinylidene fluoride (PVDF) finish paint and preparation method thereof
  • Acrylic primer suitable for polyvinylidene fluoride (PVDF) finish paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Acrylic primer suitable for PVDF topcoat, the components in the formula and their weight percentages are: 30% thermosetting acrylic resin, 30% organic solvent, 20% rutile titanium dioxide powder, 6% filler, 5% PVDF resin, auxiliary 5% agent, 4% hexamethoxymethylmelamine formaldehyde resin, wherein, the organic solvent is isophorone, the filler includes barium sulfate, zinc phosphate, silicon dioxide, and the auxiliary agent includes dispersant, acrylic defoamer, fluid Leveling agent, blocked p-toluenesulfonic acid.

[0025] The preparation method of this acrylic primer comprises the following steps:

[0026] (1) Select each component according to the formula, put the thermosetting acrylic resin, organic solvent, and additives into the mixer for one stirring, and disperse evenly. During the first stirring, the speed of the mixer is 400 rpm, and the stirring time is 2 minutes;

[0027] (2), after the step (1) is completed, add the rutile titanium dioxide powder and the f...

Embodiment 2

[0031] Acrylic primer suitable for PVDF topcoat, the components in the formula and their weight percentages are: 25% thermosetting acrylic resin, 35% organic solvent, 15% rutile titanium dioxide powder, 10% filler, 5% PVDF resin, auxiliary Agent 4%, hexamethoxymethylmelamine formaldehyde resin 6%, wherein, organic solvent is cyclohexanone, filler includes barium sulfate, zinc phosphate, silicon dioxide, auxiliary agent includes dispersant, acrylic defoamer, leveling agent, blocked p-toluenesulfonic acid.

[0032] The preparation method of this acrylic primer comprises the following steps:

[0033] (1) Select each component according to the formula, put the thermosetting acrylic resin, organic solvent, and additives into the mixer for one stirring, and disperse evenly. During the first stirring, the speed of the mixer is 600 rpm, and the stirring time is 5 minutes;

[0034] (2), after the step (1) is completed, add the rutile titanium dioxide powder and filler to the mixer for...

Embodiment 3

[0038] Acrylic primer suitable for PVDF topcoat, the components in the formula and their weight percentages are: 20% thermosetting acrylic resin, 34% organic solvent, 16% rutile titanium dioxide powder, 10% filler, 10% PVDF resin, auxiliary Agent 2%, hexamethoxymethyl melamine formaldehyde resin 8%, wherein, organic solvent is trimethylbenzene, filler includes barium sulfate, zinc phosphate, silicon dioxide, auxiliary agent includes dispersant, acrylic defoamer, leveling agent , Blocked p-toluenesulfonic acid.

[0039] The preparation method of this acrylic primer comprises the following steps:

[0040] (1) Select each component according to the formula, put the thermosetting acrylic resin, organic solvent, and additives into the mixer for one stirring, and disperse evenly. During the first stirring, the speed of the mixer is 500 rpm, and the stirring time is 3 minutes;

[0041] (2), after the step (1) is completed, add the rutile titanium dioxide powder and the filler to the...

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Abstract

The invention discloses acrylic primer suitable for polyvinylidene fluoride (PVDF) finish paint. The acrylic primer comprises 20%-30% of thermosetting acrylic resin, 30%-40% of organic solvent, 15%-20% of titanium dioxide, 6%-10% of padding, 5%-10% of PVDF resin, 2%-5% of promoter, and 4%-8% of isocyanate resin. The invention further discloses a preparation method of the acrylic primer. The preparation method of the acrylic primer comprises choosing each component according to a formula, and placing the thermosetting acrylic resin, the organic solvent and the promoter into a stirring machine to stir for a first time; adding the titanium dioxide and the padding into the stirring machine to stir for a second time; placing the mixture into a basket-type sand mill to grind for a first time, adding the PVDF resin to grin for a second time and obtaining a semi-finished product; combining the semi-finished product and other components in the formula together to stir for a third time and disperse evenly and obtaining a finished product. The acrylic primer is good in weather fastness, machining property, shock resistance and flexibility.

Description

technical field [0001] The invention relates to an acrylic primer suitable for PVDF topcoat and a preparation method thereof. Background technique [0002] At present, most of the matching primers for PVDF topcoats use polyurethane primers or epoxy primers or thermoplastic fluorine-containing primers (thermoplastic acrylic resins with PVDF resin primers), among which polyurethane primers or epoxy primers have the greatest impact on construction performance. , water resistance, weather resistance, acid and alkali resistance, hardness, etc. are not as good as acrylic amino baking paint, so the requirements for chemical resistance and weather resistance of PVDF topcoat are particularly high, and it is difficult to achieve the outdoor weather resistance of PVDF coatings for 20 years. Requirements: The fluorine-containing primer made of thermoplastic acrylic resin and PVDF resin will yellow when the thermoplastic acrylic resin is baked at high temperature, which affects the perfo...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D127/16C09D161/28C09D7/12
Inventor 罗义云
Owner SUZHOU COLOR WAY ENTERPRISE DEV
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