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Metallic pigment pretreatment method, metallic pigment and pc material using metallic pigment

A metal pigment and pretreatment liquid technology, applied in inorganic pigment processing, chemical instruments and methods, dyeing low molecular organic compound processing, etc. Problems such as poor adhesion between pigments and plastic substrates, to achieve the effect of improving the adhesion and improving the movement ability of the chain segment

Active Publication Date: 2018-02-09
上海日之升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generation of flow marks is mainly due to the poor bonding between the metal aluminum powder pigment and the plastic substrate. It is prone to curling and turning when it flows with the plastic melt or at the intersection of two melts. The local reflection ability of the surface decreases, resulting in obvious flow marks on the surface of the workpiece; the solution to the flow marks mainly starts from improving the affinity between the metal aluminum powder and the plastic substrate, but it is difficult to effectively improve the aluminum powder by general technical means. Affinity to Substrate

Method used

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  • Metallic pigment pretreatment method, metallic pigment and pc material using metallic pigment
  • Metallic pigment pretreatment method, metallic pigment and pc material using metallic pigment
  • Metallic pigment pretreatment method, metallic pigment and pc material using metallic pigment

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preparation example Construction

[0041] The preparation method of the high-gloss PC material with aesthetic effect of the present invention comprises the following steps:

[0042] (1) Prepare materials according to the above parts by weight: 67-92.3 parts of polycarbonate PC resin; 5-20 parts of styrenic polymer; 1-5 parts of compatibilizer; 0.5-2 parts of pretreated metal pigment; Salt flame retardant 0.1-0.5 parts; flame retardant synergist 0.5-2 parts; anti-dripping agent 0.1-0.5 parts; plasticizer 0.5-2 parts; lubricant 0.1-0.5 parts; antioxidant 0.1-0.5 parts share.

[0043] (2) Put each raw material described in step (1) into a high mixer and mix uniformly to obtain a premix;

[0044] (3) Add the premixed material obtained in step (2) into the twin-screw extruder, control the screw temperature of each section of the twin-screw extruder to be 250-280°C, and the screw speed to be 300-500 rpm, and melt to extrude Granulate.

[0045] Compared with the existing technology, the high-gloss PC material with ...

Embodiment 1

[0049] Prepare materials according to the following parts by weight: 67 parts of polycarbonate resins, 15 parts of polystyrene, 5 parts of terpolymers of styrene-acrylonitrile-dehydrated glycerol methacrylate, 2 parts of processed aluminum powder pigments Parts, 0.3 parts of diphenyl sulfone sulfonate, 1.5 parts of phenyl silicone resin, 0.3 parts of polytetrafluoroethylene, the molecular weight is 4 to 5 million, 2 parts of polyethylene glycol-400-diethylhexanol, low molecular weight 0.3 parts of polyethylene, 0.3 parts of antioxidant 168.

[0050] The above-mentioned raw materials are put into a high mixer and mixed evenly to obtain a premixed material. Then the premixed material is added into the twin-screw extruder, melted and extruded to granulate, the screw temperature of each section of the twin-screw extruder is controlled between 250-270°C, and the screw speed is 500 rpm. The obtained particles were dried at 100°C for 2 hours to obtain the finished material.

Embodiment 2

[0052] Prepare materials according to the following parts by weight: 75 parts of polycarbonate resin, 10 parts of acrylonitrile-butadiene-styrene copolymer, 3 parts of dehydrated glyceryl methacrylate content of 1 to 2%, 3 parts of treated aluminum powder pigment 1.5 parts, 0.2 parts of potassium perfluorobutane sulfonate, 1 part of benzyl organosilicon intermediate, 0.2 parts of polytetrafluoroethylene, molecular weight 4-5 million, 1 part of polyethylene glycol-4-dilaurate , 0.5 part of stearic acid amide, and 0.5 part of antioxidant 1010.

[0053] The above-mentioned raw materials are put into a high mixer and mixed evenly to obtain a premixed material. Then the premixed material is added into the twin-screw extruder, melted and extruded to granulate, the screw temperature of each section of the twin-screw extruder is controlled between 250-270°C, and the screw speed is 500 rpm. The obtained particles were dried at 100°C for 2 hours to obtain the finished material.

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Abstract

The invention provides a metal pigment pretreatment method. The metal pigment pretreatment method comprises the following steps: metal pigment degreasing treatment: soaking the metal pigment into an alkaline aqueous solution to carry out degreasing treatment; acid treatment: soaking the degreased metal pigment into an acidic aqueous solution to carry out acid treatment, and eroding out nano-scale pits in the surface of the metal pigment by the acidic aqueous solution; pretreatment solution treatment: soaking the metal pigment subjected to the acid treatment into the pretreatment solution for treatment, so that the surface of the metal pigment has an amine treating agent, wherein the pretreatment solution is an aqueous solution of one or several of ammonia, hydrazine, a hydrazine derivative and water-soluble amine series compounds; and drying the metal pigment. The metal pigment pretreatment method has the advantages that the nano-scale pits are formed in the surface of the metal pigment; the pretreatment solution is adopted to treat the surface of the metal pigment with the nano-scale pits, so that the surfaces of the metal pigment nano-scale pits have the amine treating agent; and by virtue of the chemical reaction between reaction radials such as an epoxy group of a compatilizer, an ester group of PC and the like and amine, the resin is driven to enter the pits better.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a metal pigment pretreatment method, the metal pigment and a PC material using the metal pigment. Background technique [0002] Low-carbon environmental protection has become a mainstream trend in the world. Relevant environmental protection laws and regulations are emerging in an endless stream in various countries. Under such a large environmental background, various low-carbon and environmentally friendly new technologies have been favored by more and more consumers. Among them, the one-time spray-free aesthetic resin has attracted more and more people's attention because it has no post-processing, which not only brings a beautiful appearance to the product, but also greatly reduces the environmental pollution caused by the production process. [0003] However, compared with traditional spray painting and electroplating, spray-free aesthetic resin has its insurmountable shortc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L25/06C08L25/14C08L27/18C08L23/06C08L83/04C08K13/06C08K9/04C08K3/08C08K5/42C08K5/20C09C1/64C09C3/06C09C3/08
CPCC08K2201/003C08K2201/011C08K2201/014C08L69/00C08L2201/02C08L2201/08C08L2205/02C08L2205/025C08L2205/03C08L2205/035C09C1/648C09C3/006C08L25/06C08L25/14C08L27/18C08L23/06C08L83/04C08K13/06C08K9/04C08K2003/0812C08K5/42C08L55/02C08K5/20C08L33/20C08K2003/085C08L47/00C08K5/103
Inventor 朱明源王尹杰段家真周海堤孟成铭陈晓东
Owner 上海日之升科技有限公司
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