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Polyester/polyethylene/phenylethylene-butadiene-phenylethylene block copolymer waste plastic alloy material and preparation thereof

A styrene block and alloy material technology, applied in the field of polymer material manufacturing, can solve the problems of difficulty in reflecting the utilization value, easy oxidative degradation, low water absorption, etc., to promote sustainable development, simple production process, high resistance The effect of impact strength

Inactive Publication Date: 2009-05-20
宁波顶名科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that it crystallizes slowly, is easy to oxidize and degrade, and becomes brittle
Polyethylene has the advantages of high density, high crystallinity, excellent rigidity, tensile strength and heat resistance, good electrical insulation and cold resistance, low water absorption and good stability, but it is easily affected by oxidation and has low hardness. Easy to age and crack
Polyester and polyethylene are both good chemical raw materials, but the current recycling is difficult to reflect their intrinsic value. It is necessary to prepare them into polymer alloy materials, but due to technical reasons, it is difficult to accomplish

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The preparation method and process steps of the above-mentioned polymer alloy are as follows: first wash and dry the recycled polyester bottle flakes and recycled polyethylene bottle flakes, then wash and dry the polyester bottle flakes, recycled polyethylene bottle flakes, styrene-butadiene Diene-styrene block copolymers, compatibilizers, and fillers were weighed according to the mass ratio of the components, and then the recycled polyester bottle flakes, polyethylene bottle flakes, styrene-butadiene-styrene The block copolymer, polyethylene grafted maleic anhydride, and filler are dried at temperatures of 100-120°C, 75°C, 70°C and 120°C respectively, and the water content of each dried material is controlled within 0.02% g.

[0032] Put the polyester bottle flakes into the reaction kettle with a stirrer, heat up to 50°C while stirring, then add the chain extender, polyethylene bottle flakes, polyethylene grafted maleic anhydride and styrene-butylene in sequence under s...

Embodiment 1

[0033] Embodiment 1: (this embodiment material total amount is 100kg)

[0034] Break the recovered polyethylene terephthalate (PET) and polyethylene (PE) bottles into 2-8mm flakes, wash them, and dry them in the air. Weigh 72kg of PET bottle flakes and dry them under vacuum at 110°C; weigh 9.1kg of PE bottle flakes and dry them at 75°C; weigh 9.1kg and 2.7kg of SBS copolymer and polyethylene grafted maleic anhydride respectively, and dry them at 70°C ; Weigh 5.4kg of 1200 mesh talcum powder and dry at 120°C. The moisture content of each material after drying is controlled within 0.02% g.

[0035] Put the dried materials and other additives into the reaction kettle in sequence: first put the polyester (PET) into the reaction kettle with a stirrer, heat up to 50°C while stirring, then add 0.4kg of chain extender bisoxazolene, poly After the ethylene bottle flakes are mixed evenly, add the compatibilizer polyethylene grafted maleic anhydride and styrene-butadiene-styrene block ...

Embodiment 2

[0045] Embodiment 2: (this embodiment material total amount is 100kg)

[0046] Take by weighing 40.3kg of polyester bottle flakes, 22kg of polyethylene bottle flakes, 11kg of styrene-butadiene-styrene block copolymer, 11kg of polyethylene grafted maleic anhydride, 14.6kg of 800 mesh talcum powder, Dry according to the conditions of Example 1.

[0047] After the material is dry, first put the polyester (PET) into the reaction kettle with a stirrer, heat up to 50°C while stirring, then add 0.3kg of chain extender bisoxazolin and polyethylene bottle flakes and mix evenly, then add the phase Compatibility polyethylene grafted maleic anhydride and styrene-butadiene-styrene block copolymer were stirred, and then the main antioxidant [tetrakis (3.5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] Pentaerythritol ester 0.3kg, and antioxidant auxiliary agent thiodipropylene dilauryl 0.1kg, talcum powder, dispersant stearic acid amide 0.4kg, stir. Finally, the obtained mixture is put i...

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Abstract

The invention relates to a polyester / polyethylene / styrene-butadiene-styrene block copolymer plastic waste alloy material. A polyester, polyethylene and styrene-butadiene-styrene block copolymer are taken as a basic material and added with auxiliary agents such as compatilizers; the mass portions of each component are as follows: 50 portions to 80 portions of PET, 10 portions to 30 portions of PE, 10 portions to 15 portions of SBS, 3 portions to 15 portions of compatilizers, 6 portions to 20 portions of fillings, 0 portion to 15 portions of antioxidants, 0 portion to 9 portions of chain extenders and 0 portion to 9 portions of dispersants. A PET bottle chip is put into a reaction kettle, stirred, heated, added with the chain extenders, the PET bottle chip, polyethylene grafted with maleic anhydride, the SBS, the antioxidants, the dispersants and the fillings in sequence and evenly stirred; then granulation is carried out. The material has convenient raw material drawing, low cost and simple production technique and can provide raw materials with relatively high cost performance for the fields of cars, buildings, household electric equipment, and the like, changes waste into valuables and effectively facilitates the sustainable development of the cycle economy of the whole society.

Description

technical field [0001] The invention relates to the technical field of manufacturing polymer materials, in particular to waste polyethylene terephthalate (abbreviated as polyester or PET), polyethylene bottles, styrene-butadiene-styrene block The polymer alloy material prepared with copolymer as raw material and auxiliary agent and its preparation method. Background technique [0002] With the vigorous development of my country's beverage industry, polyester and polyethylene are more and more widely used in beverage packaging. Nearly 3 / 5 of polyester and polyethylene are used in beverage packaging in the world today, thus bringing a large number of discarded beverage packaging bottles, causing environmental pollution. With the sharp increase in the price of petroleum raw materials and the continuous improvement of people's awareness of environmental protection, the recycling of waste packaging bottles, boxes and other resources has become an important way for enterprises to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L23/06C08L53/02C08K13/02B29B9/12
Inventor 章鼎铭
Owner 宁波顶名科技有限公司
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