Modified polystyrene material

A polystyrene and polystyrene resin technology, applied in the field of modified polystyrene materials, can solve problems such as cracking and poor impact strength, and achieve the effects of cost reduction, good fluidity, and long drying time

Inactive Publication Date: 2011-08-17
CHANGHONG MEILING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When ordinary GPPS materials are used to produce transparent parts with complex structures such as lampshades, due to poor impact strength, cracks will occur during injection molding and later assembly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] GPPS (Yangtze BASF Company 143E): 65 copies

[0028] K resin (Chevron KK38): 30 parts

[0029] White oil: 5 parts

[0030] 1. Use an electronic scale to weigh the above raw materials in proportion,

[0031] 2. Then put GPPS and K resin into a high-speed mixer for mixing and stirring. After stirring for 2 minutes, add white oil and stir again for 3 minutes.

[0032] 3. Put the mixed raw materials from the high-speed mixer into the cooling mixer for cooling and stirring. After stirring for 10 minutes, put the mixed raw materials out of the mixer for granulation.

[0033] 4. Put the stirred raw materials into the silo of the twin-screw granulator. The process temperature of the barrel of the granulator is set as follows:

[0034] Zone 1: 185℃ Zone 2: 195℃ Zone 3: 200℃ Zone 4: 200℃ Zone 5: 210℃

[0035] Zone 6: 210°C Die: 210°C

[0036] 5. During the granulation process, after cooling the strands extruded from the die position through the cooling water tank, use a hot ...

Embodiment 2

[0042] GPPS (Yangtze BASF Company 143E): 90 copies

[0043] K resin (Chevron KK38): 8 parts

[0044] White oil: 2 parts

[0045] 1. Use an electronic scale to weigh the above raw materials in proportion,

[0046] 2. Then put GPPS and K resin into a high-speed mixer for mixing and stirring. After stirring for 2 minutes, add white oil and stir again for 3 minutes.

[0047] 3. Put the mixed raw materials from the high-speed mixer into the cooling mixer for cooling and stirring. After stirring for 10 minutes, put the mixed raw materials out of the mixer for granulation.

[0048] 4. Put the stirred raw materials into the silo of the twin-screw granulator. The process temperature of the barrel of the granulator is set as follows:

[0049] Zone 1: 185℃ Zone 2: 195℃ Zone 3: 200℃ Zone 4: 200℃ Zone 5: 210℃

[0050] Zone 6: 210°C Die: 210°C

[0051] 5. During the granulation process, after cooling the strands extruded from the die position through the cooling water tank, use a hot a...

Embodiment 3

[0057] GPPS (Yangtze BASF Company 143E): 80 copies

[0058] K resin (Chevron KK38): 18 parts

[0059] White oil: 2 parts

[0060] 1. Use an electronic scale to weigh the above raw materials in proportion,

[0061] 2. Then put GPPS and K resin into a high-speed mixer for mixing and stirring. After stirring for 2 minutes, add white oil and stir again for 3 minutes.

[0062] 3. Put the mixed raw materials from the high-speed mixer into the cooling mixer for cooling and stirring. After stirring for 10 minutes, put the mixed raw materials out of the mixer for granulation.

[0063] 4. Put the stirred raw materials into the silo of the twin-screw granulator. The process temperature of the barrel of the granulator is set as follows:

[0064] Zone 1: 185℃ Zone 2: 195℃ Zone 3: 200℃ Zone 4: 200℃ Zone 5: 210℃

[0065] Zone 6: 210°C Die: 210°C

[0066] 5. During the granulation process, after cooling the strands extruded from the die position through the cooling water tank, use a hot ...

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Abstract

The invention discloses a modified polystyrene material which comprises the following raw materials in percentage by weight: 65-90% of polystyrene resin, 8-30% of styrene-butadiene copolymer and 1-5% of liquid paraffin. The raw materials according to the formula are proportionally added, and a mixer is started to mix the raw materials for 5 minutes; and the mixture can be directly put into a common injection molding machine for production without drying the raw materials. The transparency of the modified GPPS (general purpose polystyrene) material disclosed by the invention remains the transparency of the original GPPS material, the elongation at break is enhanced from 2% to 5%, and the impact strength can be enhanced from 3KJ / m<2> to 15KJ / m<2>.

Description

Technical field: [0001] The invention relates to a transparent material, more specifically a modified polystyrene material used on transparent plastic parts such as refrigerator lampshades. Background technique: [0002] At present, the lampshade material used on refrigerators is basically made of PC (polycarbonate) material. Later, due to the high price of PC, PCTA (copolyester) material is used instead of PC. However, under current conditions, PC and PCTA The price of materials is high. From the perspective of cost reduction, it is necessary to find new materials to replace PC and PCTA materials for injection molding of lampshades. When ordinary GPPS materials are used to produce transparent parts with complex structures such as lampshades, due to poor impact strength, cracks will occur during injection molding and later assembly. Invention content: [0003] In order to overcome the defects of the prior art, the purpose of the present invention is to provide a modificat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L25/10C08K5/01
Inventor 韩爱林
Owner CHANGHONG MEILING CO LTD
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