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Application of an acrylic transparent powder with anti-indentation effect

A transparent powder, acrylic technology, used in powder coatings, devices for coating liquids on surfaces, testing the strength of materials by applying stable tension/pressure, etc.

Active Publication Date: 2021-08-06
TIGER NEW SURFACE MATERIALS QINGYUAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing powder coating industry has no previous research cases and reference technologies for this indentation problem. In order to solve this problem in the application of specific wheel hubs, the applicant specially set up a research and development project to study acrylic with anti-indentation effect transparent powder

Method used

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  • Application of an acrylic transparent powder with anti-indentation effect
  • Application of an acrylic transparent powder with anti-indentation effect
  • Application of an acrylic transparent powder with anti-indentation effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: A kind of acrylic transparent powder with anti-indentation effect, its formula raw material please refer to the following table 2:

[0052] Table 2 Embodiment 1 formula raw material list

[0053]

[0054] In this example 1, after testing, the melt index range of the A254 type GMA acrylic resin provided by DIC at 125°C is 46-54g / 10min (the detection method is ASTM-D1238-57T), and the viscosity range at 150°C 20-40Pa.s, Tg range is 45-51°C, epoxy equivalent range is 480-520g / eq; melting point of dodecanedioic acid is 130-133°C, for

[0055] In other embodiments, the epoxy equivalent range of the GMA acrylic resin is 400-600g / eq, and the implementation effect of the GMA acrylic resin beyond this range is significantly worse for realizing the target Tg range of the coating film. Once the coating film is lower than At 62°C, the anti-indentation effect becomes significantly worse.

[0056] This embodiment specifically proposes to apply the acrylic transpare...

Embodiment 2

[0067] Embodiment 2: The remaining technical solutions of this embodiment 2 are the same as those of embodiment 1, the difference is that in this embodiment 2, please refer to image 3 As shown, the rapid detection device includes a first contact press plate 110a and a second contact press plate 110b distributed at intervals, and the first contact press plate 110a and the second contact press plate 110b are all made of aluminum contacts with a length of 12cm and a width of 3cm. Pressing plate, preferably, the distance between the first contact pressing plate 110a and the second contact pressing plate 110b is in the range of 1-5cm; specifically, in this embodiment, the first contact pressing plate 110a and the second contact pressing plate 110a The distance D between 110b is 2cm;

[0068] In this embodiment, the rapid detection device as described above is used for the rapid detection of the anti-indentation performance of the coating film, and the detection method is as follow...

Embodiment 3

[0073] Embodiment 3: the remaining technical schemes of this embodiment 3 are the same as embodiment 1, the difference is that in this embodiment 3, the GMA acrylic resin provided by Anderson (epoxy equivalent is 400-450g / eq, at 150 ℃ The melt index range is 46-54g / 10min) to replace the GMA acrylic resin in Example 1; After testing, no indentation marks are produced.

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Abstract

The invention discloses an application of an acrylic transparent powder with an anti-indentation effect. Its raw materials include GMA acrylic resin accounting for 70-90% of the total weight and a curing agent accounting for 8-28% of the total weight. The melt index range of GMA acrylic resin at 125°C is not lower than 35g / 10min, and / or the viscosity range of GMA acrylic resin at 150°C is not higher than 80Pa.s, and the range of epoxy equivalent of GMA acrylic resin is not higher than 700g / eq, the Tg range of acrylic transparent powder after spraying and curing into a film is not lower than 62°C; the invention significantly improves the anti-indentation ability of acrylic transparent powder after curing and film formation by screening the formula raw materials, and is applied to wheel hub products After spraying and forming a film, it can effectively avoid or significantly reduce the indentation problem during the packaging and transportation process.

Description

technical field [0001] The invention belongs to the field of thermosetting powder coatings, and in particular relates to the application of an acrylic transparent powder with an anti-indentation effect. Background technique [0002] In recent years, the government and society have paid more and more attention to issues such as the environment, safety, and energy. In order to cooperate with the automotive industry in energy conservation and emission reduction, developing environmentally friendly automotive coatings and advocating clean production of automotive coating processes has become the focus of automotive coatings production and coating companies. Focus on key points. As China has become the world's largest producer of automotive aluminum wheels, the production volume of acrylic transparent powder-coated wheels is huge, and the storage base is increasing. The transportation distance, especially the sea transportation distance, is very long. During the storage and trans...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D5/03B05D3/02B05D5/06B05D7/24G01N3/02G01N3/08
CPCB05D3/0254B05D5/06B05D7/24C09D5/03C09D133/068G01N3/02G01N3/08
Inventor 汪志成骆飚
Owner TIGER NEW SURFACE MATERIALS QINGYUAN CO LTD
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