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Preparation method of recycled polyester chip microfilaments and usage thereof

A technology for recycling polyester and slicing, applied in the direction of single-component polyester rayon, conjugated synthetic polymer rayon, filament/thread molding, etc., to achieve high impact strength, high processing efficiency, and stable dimensions good sex effect

Inactive Publication Date: 2010-06-23
王世和
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Recycling waste polyester (PET) bottle flakes for composite materials / alloy reinforcements has not yet been patented and reported in the literature

Method used

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  • Preparation method of recycled polyester chip microfilaments and usage thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1. Weigh 100Kg of recycled polyester chips purchased from a professional recycling organization, vacuum-dry at 90°C for 3h, and then vacuum-dry at 110-120°C for 4h; -Diphenylmethane diisocyanate (MDI) 0.4Kg, tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester / phosphite tris(2,4-ditert Put 0.25Kg of butylphenyl) ester (3 / 1), 0.65Kg of nano-kaolin, and 1.3Kg of polyethylene glycol (6000) into the "material processing unit" together, and process at 110-180°C for 15-25min, and mix the materials evenly ;

[0038] Feed the material into ( Figure 1 ) Co-rotating parallel twin-screw extruder (temperature control of each section: 90-140-220-200-240-260-250-240-260°C head 250°C), screw rotation ≥ 250rpm, extrusion strip Cooling by cold air→traction→reheating (120~160℃)→redrawing (drawing ratio 6~10 times, drawing into filaments with d≤0.3mm)→natural cooling→traction→granulation (1~10mm );

Embodiment 2

[0039] Embodiment 2. 100Kg will be weighed from the reclaimed polyester chips purchased by a professional recycling organization, vacuum-dried at 90°C for 3.5h, and then vacuum-dried at 110-120°C for 5h; then mixed with high-density polyethylene (HDPE) 20Kg, 1 4-Phenylbisoxazoline (1,4-PBO) 2.3Kg, n-octadecyl β-(4-hydroxy-3,5-di-tert-butylphenyl)propionate / dilauryl thiodipropionate Ester (4 / 1) 0.3Kg, 2,2'-methylenebis(4,6-di-tert-butylphenyl) sodium phosphate / mica (1 / 3) 4Kg, epoxy soybean oil 2.5Kg put into " In the "material handling unit", process at 110-180°C for 15-25 minutes, and mix the materials evenly;

[0040] The preparation method is the same as in Example 1.

Embodiment 3

[0041] Example 3. Weigh 100Kg of recycled polyester chips purchased from a professional recycling organization, vacuum-dry at 90°C for 5h, and then vacuum-dry at 110-120°C for 4h; Phenylisopropane dipropylene oxide phenyl ether 3.5Kg, tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester / pentaerythritol bisphosphite bis(2,4- 0.55kg of di-tert-butylphenyl) ester (3 / 1), 3.6Kg of magnesium stearate / aluminum trioxide (1 / 5), and 1Kg of polypropylene glycol are put into the "material handling unit" together, at 110~180℃ Process for 15 to 25 minutes, and mix the materials evenly;

[0042] The preparation method is the same as in Example 1.

[0043] Application result comparison:

[0044] The flexible container bag (FIBC) is made of polyolefin, mainly drawing-grade polypropylene resin, and then coated with a film as the base fabric. It has the advantages of lightness, softness, high strength, acid and alkali corrosion resistance, moisture resistance, and ...

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Abstract

The invention relates to a preparation method of recycled polyester chip microfilaments and a usage thereof, belonging to the field of plastic modification and category of composite material / alloy promoter. The polyester chip microfilament is an ideal promoter which has excellent performance, environment-friendliness, high added value, wide application range and broad market prospect and can change the mechanical property of the composite material / alloy. Recycled blow molding polyester (RPET / RPBT) is taken as main raw material, and the following formula and process are adopted for preparing the microfilament according to parts by weight: 100 parts of recycled polyester (RPET / RPBT), 5-30 parts of wire-drawing high-density polyethylene (HDPE) / polypropylene (PP) / linear low-density polyethylene (LLDPE), 0.1-4 parts of crosslinking agent / chain extender / anchoring agent, 0.1-0.8 part of antioxidant, 0.5-6 parts of nucleating agent, and 1-5 parts of nucleate accelerant, and other processing aids (such as lubricant and plasticizer) / functional aids (such as fire retardant and ultraviolet absorber) can be additionally and appropriately added. The microfilament is prepared through extrusion, cooling, drawing and granulating by the reaction under 90-260 DEG C under the action of mechanical shear. The recycled polyester (RPET / RPBT) microfilament prepared in the invention can endow the composite material / alloy with excellent mechanical property.

Description

technical field [0001] It belongs to the field of plastic modification and the category of composite materials / alloy reinforced materials. It is an ideal reinforcing material that can change the mechanical properties of composite materials / alloys with excellent performance, environmental friendliness, high added value, wide application range and broad market prospects. Background technique [0002] Polyethylene terephthalate PET, commonly known as polyester resin, is a condensation polymer of terephthalic acid and ethylene glycol, collectively referred to together with polybutylene terephthalate PBT For thermoplastic polyester, or saturated polyester. [0003] According to the statistics of China Polyester Association, the output of polyester resin in my country was nearly 17.3 million / t in 2008, and it is predicted that by 2010, the output of polyester resin will reach 19 million / t. Polyester (PET) beverage bottles have the advantages of light weight, low price, convenien...

Claims

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Application Information

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IPC IPC(8): C08L67/00C08L23/06C08L23/12C08K13/02C08J5/04D01F6/92D01F8/14D01F8/06D01D5/253
Inventor 王世和侯丽荣王艳煜王慧煜
Owner 王世和
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