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Food-grade thermoplastic composite material as well as preparation method and application thereof

A composite material, food-grade technology, applied in the field of food-grade thermoplastic materials and their preparation, can solve the problems of easy moldy bamboo and wood drawers, heavy bamboo steamers, heavy steamers, etc., to improve surface finish, dimensional stability, and excellent mechanical properties. Performance and heat resistance, the effect of improving heat resistance

Inactive Publication Date: 2015-06-03
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional steamers are mostly made of bamboo rattan and wooden strips, etc., but the cages made of this material have the following disadvantages in use: (1) It is troublesome to repair; (2) Bamboo steamers are heavy, especially easy to absorb water during use (3) There are many thorns on the edge of the bamboo and wooden drawers, which are difficult to clean and easy to prick hands; (4) In the wet season, the bamboo and wooden drawers are prone to mold; (5) The productivity of traditional drawers is low and the products are uneven Incomplete, unstable supply

Method used

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  • Food-grade thermoplastic composite material as well as preparation method and application thereof
  • Food-grade thermoplastic composite material as well as preparation method and application thereof
  • Food-grade thermoplastic composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Food-grade filler treatment: Dry the used food-grade filler at 100-110 degrees to remove moisture, and then pass the dried food-grade filler through a mesh sieve to obtain a food-grade filler with a particle size of 20-200nm;

[0035] (2) Mix 5 parts of food-grade calcium carbonate, 20 parts of food-grade calcium sulfate whisker, and 1.2 parts of food-grade calcium stearate in a blender for 3 to 5 minutes to obtain food coated with calcium stearate Grade calcium carbonate powder and calcium sulfate whiskers;

[0036] (3) Mix 100 parts of food-grade polypropylene, 0.2 parts of titanium dioxide and the mixture in step (1) in a high-speed mixer for 2 to 3 minutes; add the obtained mixture into a twin-screw extruder for mixing, and the extrusion temperature is 200 ~235°C, of ​​which the first zone is 200-215°C, the second zone is 215-235°C, the third zone is 215-235°C, the fourth zone is 210-230°C; the screw speed of the twin-screw extruder is 300-350r / min; the obtained...

Embodiment 2

[0038] (1) Food-grade filler treatment: Dry the used food-grade filler at 100-110 degrees to remove moisture, and then pass the dried food-grade filler through a mesh sieve to obtain a food-grade filler with a particle size of 20-200nm;

[0039] (2) Mix 8 parts of food-grade calcium carbonate, 17 parts of calcium sulfate whiskers and 1 part of food-grade paraffin in a blender for 3-5 minutes to obtain food-grade calcium carbonate powder and calcium sulfate whiskers coated with paraffin;

[0040] (3) Mix 100 parts of food-grade polycarbonate, 0.1 part of food-grade tartrazine pigment and the mixture in step (1) in a high-speed mixer for 2 to 3 minutes; add the obtained mixture into a twin-screw extruder for mixing, The extrusion temperature is 220-300°C, of ​​which the first zone is 220-230°C, the second zone is 250-280°C, the third zone is 260-300°C, and the fourth zone is 255-290°C; the screw speed of the twin-screw extruder is 330-380r / min; the obtained material was extrude...

Embodiment 3

[0042] (1) Food-grade filler treatment: Dry the used food-grade filler at 100-110 degrees to remove moisture, and then pass the dried food-grade filler through a mesh sieve to obtain a food-grade filler with a particle size of 20-200nm;

[0043] (2) Put 9 parts of food-grade medical-grade talc powder, 25 parts of calcium sulfate whiskers, and 1.5 parts of food-grade hydrocarbon wax in a blender and mix for 3-5 minutes to obtain medical-grade talc powder and calcium sulfate coated with hydrocarbon wax on the surface Whiskers;

[0044] (3) Mix 100 parts of food-grade high-temperature-resistant polyethylene, 0.2 parts of food-grade yellow pigment and the mixture in step (1) in a high-speed mixer for 2 to 3 minutes; add the obtained mixture into a twin-screw extruder for mixing , the extrusion temperature is 150-240°C, of ​​which the first zone is 150-170°C, the second zone is 180-220°C, the third zone is 190-240°C, and the fourth zone is 180-230°C; the screw speed of the twin-scr...

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Abstract

The invention belongs to the field of thermoplastic composite materials and relates to a food-grade thermoplastic composite material as well as a preparation method and application thereof. The food-grade thermoplastic composite material is prepared from the following components in parts by weight: 100 parts of food-grade thermoplastic resin, 5-30 parts of a food-grade enhancer, 5-10 parts of food-grade filler, 0.5-1.5 parts of a food-grade processing additive and 0.1-0.5 part of a food-grade colorizing agent. Compared with the prior art, the food-grade filler and calcium sulfate crystal whiskers used in the invention are unlikely to agglomerate during processing after surface treatment and are good in dispersity, so the heat resistance of the material is improved; the food-grade thermoplastic composite material prepared by the method disclosed by the invention can be applied to a plastic cage drawer.

Description

technical field [0001] The invention belongs to the field of thermoplastic composite materials, and relates to a food-grade thermoplastic material, a preparation method and application thereof. Background technique [0002] Cages are widely used in my country's food and catering industry, and the market demand is large. Traditional cages are mostly made of bamboo, rattan and wooden strips, but the cages made of this material have the following disadvantages in use: (1) It is troublesome to repair; (2) Bamboo steamers are heavy, especially easy to absorb water during use (3) There are many thorns on the edge of the bamboo and wooden drawers, which are difficult to clean and easy to prick hands; (4) In the wet season, the bamboo and wooden drawers are prone to mold; (5) The productivity of traditional drawers is low and the products are uneven Incomplete, unstable supply. In view of the above problems, food-grade polymer materials can be used to replace traditional cage mate...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08L69/00C08L77/00C08L67/02C08L55/02C08K13/06C08K9/10C08K7/08C08K3/26C08K3/34C08K3/30B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/9258B29C2948/92704C08K3/22C08K3/26C08K3/30C08K3/34C08K7/08C08K9/10C08K13/06C08K2003/2241C08K2003/265C08K2003/3045C08K2201/002C08K2201/003C08K2201/011C08K2201/016C08L2201/08C08L2207/10C08L23/12C08L69/00C08L23/08C08L67/02C08L55/02C08L77/00
Inventor 杨桂生姚寅芳
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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