Spraying-free effect pigment as well as preparation method and application thereof

An effect pigment and spray-free technology, which is applied in the field of spray-free effect pigments and its preparation, can solve the problems of affecting the appearance effect, easy to flip, difficult orientation flip, etc., achieve a good spray-free metal effect, and avoid weld marks and flow marks Effect

Pending Publication Date: 2022-06-24
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventionally used spray-free effect pigments include metal powder, pearl powder, etc., which are mainly in the form of flakes, so they are prone to overturning during the injection molding process; and inorganic substances are naturally incompatible with organic resins, and metal powder and pearl powder are compatible in the plastic matrix. Poor tolerance, easy to cause serious weld lines and flow marks
[0004] The prior art discloses a spray-free metal effect polyolefin material, adding spherical particles modified by a surfactant to suppress the deflection of the flake metal effect pigment at the melt interface along the melt flow direction; but Modified spherical particles of inorganic matter with a particle size of 10-80 μm are easily sheared and broken during extrusion and injection molding, making the steric hindrance disappear
There is also a report disclosing an aesthetic resin composition for improving appearance, including a thermosetting effect pigment masterbatch, and using a thermosetting resin to coat the effect pigment to increase the particle size and make it difficult to reverse the orientation; but the coating will cause the effect pigment to partially agglomerate, Thus affecting the appearance of spray-free

Method used

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  • Spraying-free effect pigment as well as preparation method and application thereof
  • Spraying-free effect pigment as well as preparation method and application thereof
  • Spraying-free effect pigment as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～16

[0055] Embodiments 1 to 16 respectively provide a spray-free effect pigment, the component content is shown in Table 1, and the preparation method is as follows:

[0056] At 30°C, the effect pigment and thermosetting resin were dispersed in an organic solvent (ethanol, commercially available) dissolved with a coupling agent, and after stirring for 5 hours, the organic solvent was removed by heating to obtain a spray-free effect pigment.

[0057] Table 1 Component content (parts by weight) of the spray-free effect pigments of Examples 1-16

[0058]

[0059]

Embodiment 17～34

[0061] Embodiments 17 to 34 respectively provide a spray-free material, the component contents are shown in Table 2, and the preparation method is as follows:

[0062]The thermoplastic resin is added to the main feeding port of the twin-screw extruder, the spray-free effect pigment is added to the side feeding port of the twin-screw extruder, and the spray-free material is obtained by melt mixing, extrusion and granulation; The outlet temperature is 170~320℃, and the screw speed is 350~450rpm.

[0063] Table 2 Component content (parts by weight) of the spray-free materials of Examples 17-34

[0064]

[0065]

Embodiment 17

[0088] In Examples 17-28, the comprehensive appearance effect index (I) of the spray-free materials of Examples 18, 19, 22, 23, 25, 27, and 28 was relatively higher, and the spray-free effect was better; followed by Example 17, Again Examples 20, 21, and again Examples 24, 26. It can be seen that the ratio of the average particle size of the thermosetting resin microspheres to the effect pigment is different, and the average particle size of the effect pigment is different, which affects the spray-free appearance effect of the material. The ratio of the average particle size of the thermosetting resin microspheres to the effect pigment is preferably 1:(6-30).

[0089] According to Examples 17, 30, 31, and 32 combined with Examples 1, 14, 15, and 16, the spray-free appearance effect index of Examples 31 and 32 is slightly worse. Therefore, the component content of spray-free effect pigments is preferably: effect pigments 100 parts, 20-50 parts of coupling agent, 30-100 parts o...

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Abstract

The invention discloses a spray-free effect pigment as well as a preparation method and application thereof. The spraying-free effect pigment comprises the following components in parts by weight: 100 parts of effect pigment, 10-200 parts of a coupling agent and 10-200 parts of thermosetting resin microspheres, the effect pigment is flaky, and the average particle size is 6-350 [mu] m; the ratio of the average particle size of the thermosetting resin microspheres to the average particle size of the effect pigment is 1: (3-100). The steric hindrance effect of the small-particle thermosetting resin is cooperated with improvement of compatibility, so that when the pigment with the spraying-free effect is added into a plastic matrix, a good spraying-free metal effect can be achieved, and the phenomena of weld marks and flow marks are avoided.

Description

technical field [0001] The invention relates to the technical field of spray-free materials, and more particularly, to a spray-free effect pigment and a preparation method and application thereof. Background technique [0002] As all sectors of society pay more and more attention to environmental protection issues, spray-free metal effect materials are gradually gaining popularity. Spray-free materials can reduce the production process of painting or electroplating, avoid environmental pollution, and can achieve a variety of metal effects to meet the diverse needs of consumers. [0003] Spray-free effect pigments are often added to plastic substrates to achieve spray-free metallic effects. Conventionally used spray-free effect pigments include metal powder, pearlescent powder, etc., which are mainly flakes, so they are easy to be turned over during the injection molding process; and inorganic substances are naturally incompatible with organic resins, and metal powder and pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/04C08L83/04C08L23/00C08K3/08C08K9/10C08K3/013
CPCC08K3/08C08K9/10C08K3/013C08L23/00C08K2003/0812C08K2003/085C08L33/04C08L83/04
Inventor 朱秀梅陈平绪叶南飚黄险波刘鑫鑫常欢
Owner KINGFA SCI & TECH CO LTD
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