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Aesthetical resin capable of eliminating injection-molding weld lines and preparation method thereof

An aesthetic resin and welding line technology, which is applied in the field of polymer material preparation, can solve the problems of welding seams and flow line marks on the surface of parts, serious environmental pollution, complicated processes, etc., and achieve stable product quality, simple process and good fluidity. Effect

Inactive Publication Date: 2010-07-28
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of spray painting process are bright colors, but the process is complicated, high cost and serious environmental pollution; the advantages of direct injection molding are simple process, low cost, environmental protection, and bright colors, but problems such as weld seams and streamline marks are prone to occur on the surface of the workpiece during the molding process , which limits its application in some fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-10

[0042] (1) The components and parts by weight proportioning ratio of embodiments 1-10 are as shown in Table 1, according to the data in Table 1;

[0043] (2) Place the above-mentioned materials in a medium-speed mixer, control the rotating speed to be 300rpm, and mix for 30min to obtain the mixed materials;

[0044] (3) The mixed material is introduced into a twin-screw extruder, the screw speed is controlled to be 300 rpm, the length-to-diameter ratio of the screw is 40:1, and the temperature of each zone of the screw is 180-260° C., extruding and granulating to obtain the product.

[0045] Table 1 embodiment scheme unit / part

[0046] Example

1

2

3

4

5

6

7

8

9

10

thermoplastic resin a

100

100

100

100

100

100

100

100

100

100

Aluminum powder b

0.5

-

-

-

-

-

-

-

-

-

Aluminum powder c

-

...

Embodiment 11

[0057] An aesthetic resin capable of eliminating weld lines in injection molding and a preparation method thereof, comprising the following steps:

[0058] (1) Prepare materials according to the following components and parts by weight: 100kg of thermoplastic resin, 0.1kg of aluminum powder, 0.1kg of flash sheet, 0.1kg of antioxidant, 0.1kg of dispersant, and 0.1kg of pigment; wherein, the thermoplastic resin is acrylonitrile-butylene Diene-styrene, aluminum powder adopts silver round aluminum powder with large particle size, the particle size is 90μm, the purity is over 99%, and the diameter-thickness ratio is 20:1. It is a compound of hindered phenol and phosphite. It is made of commercially available antioxidant 1010 and antioxidant 168 in a ratio of 1:2. The dispersant is ethylene bis stearic acid amide, pigment It is an inorganic toner ultramarine, with a heat resistance above 280°C and a light resistance level of 7-8, which meets the requirements of SGS and ROHS safety s...

Embodiment 12

[0062] An aesthetic resin capable of eliminating weld lines in injection molding and a preparation method thereof, comprising the following steps:

[0063](1) Prepare materials according to the following components and parts by weight: 100kg of thermoplastic resin, 5kg of aluminum powder, 5kg of flash sheet, 1kg of antioxidant, 1kg of dispersant, and 5kg of pigment; wherein, the thermoplastic resin is methyl methacrylate-butadiene - Styrene copolymer and aluminum powder adopt silver round aluminum powder with large particle size, particle size is 400μm, purity is over 99%, diameter-to-thickness ratio is 50:1, surface structure is polished corn flakes, and flash flakes are aluminosilicate , particle size 400 μm, relative density of aluminosilicate 2.8, purity 98%, particle size 400 μm, antioxidant is commercially available antioxidant 1076 and antioxidant 168 compounded with a ratio of 1:2, dispersed The agent is pentaerythritol tetrastearate, the pigment is organic pigment, th...

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Abstract

The invention relates to an aesthetical resin capable of eliminating injection-molding weld lines and a preparation method thereof. The aesthetical resin comprises the following components in part by weight: 100 parts of thermoplastic resin, 0 to 5 parts of powdered aluminium, 0 to 5 parts of diamantes, 0.1 to 1 parts of antioxidant, 0.1 to 1 parts of dispersing agent and 0.1 to 5 parts of pigment; after the materials are prepared according to the components and the parts by weight, the materials are put into a medium-speed mixer, the rotating speed and the time are controlled, mixed material is obtained, and finally, a double-screw extruder is used to extrude and granulate the mixed material, so that the product is obtained. Compared with the prior art, the invention has the advantages of high surface glossiness, good mirror effect, bright color, good flowability, simple and continuous flow, high production efficiency and stable product quality, meets SGS and ROHS heavy metal safety standards and can be recycled.

Description

technical field [0001] The invention relates to the field of polymer material preparation, in particular to an aesthetic resin capable of eliminating welding lines in injection molding and a preparation method thereof. Background technique [0002] With the improvement of people's aesthetic level, aesthetic resins with special effects (metallic effect, pearlescent effect, flashing effect, etc.) are becoming more and more popular, and are widely used in home appliances (such as washing machines, refrigerators, air conditioners, water dispensers, computers, LCD TV, vacuum cleaner, etc.), electronics, automobiles and other fields are becoming a new consumption trend. At present, spray painting process and direct injection molding process are widely used. The advantages of spray painting process are bright colors, but the process is complicated, high cost and serious environmental pollution; the advantages of direct injection molding are simple process, low cost, environmental ...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L25/12C08L55/02C08L33/12C08L51/00C08L69/00C08K13/02C08K3/08C08K3/34C08K5/13C08K5/524C08K5/20C08K5/103C08K3/22C08K3/04B29B9/06
Inventor 李哲陈伶李荣群辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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