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Method for manufacturing plastic template by recycled modified polyethylene terephthalate bottle materials

A technology of polyethylene terephthalate and ethylene phthalate, which is applied in the field of plastic template preparation, can solve the problems of poor impact performance, slow crystallization speed, long molding cycle and the like, and achieve long service life , the effect of improving flexibility and shortening molding cycle

Inactive Publication Date: 2012-11-14
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects such as slow crystallization speed, long molding cycle, high brittleness and poor impact performance of the finished product in the processing process of PET bottle recycled materials, the invention provides a method for preparing plastic templates from PET bottle recycled materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] After removing dust and impurities from recycled PET bottles, place them in a crusher and crush them into recycled material fragments of about 2.5mm×2.5mm; put the fragments in a constant temperature blast drying oven, control the temperature of the drying oven to 155°C, and dry for 5 hours , Weigh 75Kg of recycled PET bottle fragments after drying and place them in a high-speed mixer, control the mixer speed to 500r / min, temperature 102°C, and sequentially add Shore D hardness of 60 and density of 0.92g / cm 3 TPV 19Kg, EEA 4.5Kg, tetra[β-(3,5-di-tert-butyl-4-hydroxybenzene) whose mass percentage of ethyl acrylate accounts for 20% of the mass percentage of ethylene-ethyl acrylate copolymer (Base) propionic acid] pentaerythritol ester 0.7 Kg, tris(1,2,2,6,6-pentamethyl-4-piperidinyl) phosphite 0.45 Kg, rutile titanium dioxide 0.9 Kg, mix for 8min, stir The mixture is placed in a co-rotating twin-screw extruder, and the temperature of the barrel of the twin-screw extruder is...

Embodiment 2

[0016] After removing dust and impurities, the recycled PET bottles are placed in a crusher and crushed into recycled material fragments of about 2.5mm×2.5mm; the fragments are placed in a constant temperature blast drying box, and the temperature of the drying box is controlled to 154°C. After drying for 5 hours , Weigh 72Kg of recycled PET bottle fragments after drying and place them in a high-speed mixer, control the mixer speed to 500r / min, temperature 101℃, and add in sequence with Shore D hardness of 60 and density of 0.92g / cm 3 TPV17Kg, EEA 3.5Kg, tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) whose mass percentage of ethyl acrylate accounts for 20% of the mass percentage of ethylene-ethyl acrylate copolymer ) Propionic acid] pentaerythritol ester 0.6 Kg, tris(1,2,2,6,6-pentamethyl-4-piperidinyl) phosphite 0.35 Kg, rutile titanium dioxide 0.7 Kg, stir and mix for 8 min, stir to form Mixture: Place the mixture in the same-rotating twin-screw extruder and control the barrel te...

Embodiment 3

[0018] After removing dust and impurities from recycled PET bottles, place them in a crusher and crush them into recycled material fragments of about 2.5mm×2.5mm; put the fragments in a constant temperature blast drying box, control the temperature of the drying box at 156°C, and dry for 5 hours , Weigh 78Kg of recycled PET bottle fragments after drying and place them in a high-speed mixer, control the mixer speed to 500r / min, temperature 103°C, and sequentially add Shore D hardness of 60 and density of 0.92g / cm 3 TPV 20Kg, add EEA 5.5Kg, tetra[β-(3,5-di-tert-butyl-4-hydroxybenzene) whose mass percentage of ethyl acrylate accounts for 20% of the mass percentage of ethylene-ethyl acrylate copolymer (Base) propionic acid] pentaerythritol ester 0.8 Kg, tris(1,2,2,6,6-pentamethyl-4-piperidyl) phosphite 0.55 Kg, rutile titanium dioxide 1.1 Kg, mix for 8min, stir The mixture is placed in a co-rotating twin-screw extruder, and the temperature of the barrel of the twin-screw extruder is...

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Abstract

The invention relates to a method for manufacturing a plastic template by recycled modified polyethylene terephthalate (PET) bottle materials, which comprises the following steps of: adding 15 to 22 weight parts of thermoplastic vulcanizate (TPV), 3 to 6 weight parts of ethylene / ethyl acrylate (EEA), 0.5 to 0.9 weight part of pentaerythrityl tetrakis[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate], 0.3 to 0.6 weight part of tri(1,2,2,6,6-pentamethyl-4-piperidyl) phosphite ester and 0.6 to 1.2 weight parts of rutile type titanium dioxide into 70 to 80 weight parts of recycled PET bottle materials serving as basic raw materials, and performing crushing, drying, mixing, extrusion, die-pressing, cooling and forming processes to manufacture the plastic template. Compared with a wooden template, the plastic template manufactured by the method has the characteristics of strong compressive strength, high resistance to impact, water absorption resistance, rot resistance, long service lifeand the like; and the method is applied in the fields of cement-cast floor templates, cement-cast bridge construction templates and the like.

Description

Technical field [0001] The invention relates to a method for preparing a plastic template, in particular to a method for preparing a plastic template from recycled materials of modified polyethylene terephthalate bottles. Background technique [0002] Polyethylene terephthalate (PET) is a highly crystalline polymer with high heat resistance, good creep resistance, abrasion resistance, and excellent chemical resistance. It is widely used in synthetic fibers, electrical appliances, Packaging bottles, films and other fields, especially in the beverage packaging industry have been widely used. PET bottles are used for the packaging of mineral water, carbonated beverages, fruit juice beverages, tea beverages, etc. It has the advantages of good barrier properties, high strength, acid and alkali resistance, low cost, and high safety in use. Its consumption ranks first among plastic food packaging bottles. As most of the PET bottles are for one-time use, as a large number of PET packagi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L23/16C08L23/08C08K13/02C08K5/134C08K5/524C08K3/22B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 张华集陈晓张雯
Owner FUJIAN NORMAL UNIV