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Vegetable fiber reinforced flame-retardant thermoplastic starch-based composite material and preparation method thereof

A thermoplastic starch and plant fiber technology, which is applied in the field of plant fiber reinforced flame-retardant thermoplastic starch-based composite materials and its preparation, can solve the problems of unsatisfactory mechanical properties and combustion properties, achieve good biodegradability, low cost, and increase Use the effect of range

Inactive Publication Date: 2010-10-06
GUANGXI TEACHERS EDUCATION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Generally used in plastic processing molding methods such as extrusion, compaction, injection and molding can prepare starch-based degradable materials. It is generally believed that thermoplastic starch materials have good comprehensive properties and have the potential to replace traditional white plastics. Performance and combustion properties are less than ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 10 parts by weight (the following parts by weight are all represented by "parts") banana fiber is cut into 5 ~ 20mm long stand-by; 100 parts, 20 parts and 10 parts of tapioca starch, formamide and urea are respectively taken at a speed of 6000 ~20000R / min mechanical high-speed mixer at high speed ("high speed" in the following examples is the same as this example) mixed for 5 minutes, then stirred and mixed with 10 parts of banana fiber and 10 parts of magnesium hydroxide for another 5 minutes, and the resulting material was sealed and swelled at room temperature for 12 hours Extrude the swollen blended material with an extruder at 100°C, 110°C, 120°C, and 130°C to granulate, then use a flat vulcanizer to press at 15MPa and 130°C for 10 minutes, and cool at room temperature for 5 minutes. Banana fiber-reinforced flame-retardant thermoplastic starch-based composite sheet was obtained. Use a universal material testing machine, an oxygen index tester and a horizontal / verti...

Embodiment 2

[0024] 10 parts of sisal fibers are cut into 5-20 mm long short fibers for later use. Mix 100 parts, 10 parts and 20 parts of cornstarch, formamide and dicyandiamide respectively at high speed for 5 minutes, add sisal fiber and 20 parts of aluminum hydroxide and continue mixing for 5 minutes. The final blended material is extruded and granulated with an extruder at 90°C, 95°C, 100°C, and 100°C, and then hot-pressed with a flat vulcanizer at 15MPa and 130°C for 10 minutes, and cooled at room temperature for 5 minutes to obtain sisal Fiber-reinforced flame-retardant thermoplastic starch-based composites. Use a universal material testing machine, an oxygen index tester and a horizontal / vertical combustion tester to measure its mechanical properties and combustion properties, and the results are shown in Attached Table 1 2 # .

Embodiment 3

[0026] 10 parts of jute fibers are cut into short fibers of 5-20mm length for use. Mix 100 parts, 20 parts and 20 parts of potato starch, formamide and melamine respectively at high speed for 5 minutes, add jute fiber and 10 parts of dicyandiamide and continue mixing for 5 minutes. The material is mixed with an internal mixer at 130°C and 40 R / min for 10 minutes to obtain thermoplastic starch materials, and then extruded at 110°C, 120°C, 125°C, and 130°C with an extruder to obtain jute fiber reinforced Flame retardant thermoplastic starch based composites. Use a universal material testing machine, an oxygen index tester and a horizontal / vertical combustion tester to measure its mechanical properties and combustion properties, and the results are shown in Attached Table 1 3 # .

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PUM

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Abstract

The invention belongs to a vegetable fiber reinforced flame-retardant thermoplastic starch-based composite material and a preparation method thereof. The composite material comprises the following raw materials in part by weight: 100 to 120 parts of starch, 30 to 50 parts of plasticizer, 5 to 30 parts of vegetable fibers and 5 to 40 parts of flame retardant. The banana fiber raw material used by the invention is agricultural waste, namely banana stems, and has low cost; and sisal fibers, jute fibers and the like can be produced industrially and the raw materials are easily obtained. The product can be prepared by simple controllable standard machine-shaping conditions. The finished product has excellent biodegradability, mechanical property and flame retardant property, can be used in the fields of package, automotive trim, household appliances and the like and avoid applying pressure to the environment after being scrapped. Meanwhile, the vegetable fiber reinforced flame-retardant thermoplastic starch-based composite material increases the additional value of the cash crops, increases farmer income and has important significance for reduction of white pollution.

Description

technical field [0001] The invention relates to the field of natural raw starch composite materials and thermoplastic processing thereof, in particular to plant fiber reinforced flame-retardant thermoplastic starch-based composite materials and a preparation method thereof. Background technique [0002] Since Leo Baekeland invented phenolic plastics in the early 20th century, plastics have been applied to all aspects of people's lives in more than 100 years, completely changing human life, and are recognized as a particularly important one among the 100 major inventions of mankind. In 1996, global plastic production had exceeded 130% of steel production (according to total production volume). In 2001, my country's output of plastic products ranked second in the world, and in 2007 it increased to 31.8454 million tons (according to China Statistical Yearbook 2008). While plastic brings comfort and convenience to people, it also brings environmental pollution hazards to humans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L97/02C08L1/02C08K3/22C08K5/21C08K5/31C08K5/3492C08K5/20
Inventor 莫羡忠鈡宇翔庞锦英甘朝阳马德超
Owner GUANGXI TEACHERS EDUCATION UNIV
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