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Method for recycling and preparing modified polypropylene composite material from waste polypropylene pipeline

A composite material, polypropylene technology, applied in the field of polymer material processing, can solve problems such as uneven compatibility and dispersion

Pending Publication Date: 2020-08-11
NINGBO POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above existing problems, the present invention provides a method for recycling and preparing modified polypropylene composite materials from waste polypropylene pipes, which effectively solves the compatibility problems and dispersion problems between polyester, nylon, spandex and polypropylene materials. uneven problem

Method used

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  • Method for recycling and preparing modified polypropylene composite material from waste polypropylene pipeline
  • Method for recycling and preparing modified polypropylene composite material from waste polypropylene pipeline
  • Method for recycling and preparing modified polypropylene composite material from waste polypropylene pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-22

[0031] (1) Remove dust, other plastics, iron materials and other impurities from the discarded polypropylene pipes with polyester, nylon, and spandex attached to the surface, crush them, and dry them at 120°C for 6 hours to obtain recycled polypropylene pipes. The mass is 100Kg. Polyester, nylon, and spandex attached to the surface have a relatively light specific gravity, which is about 0.5-5% of the total mass of recycled polypropylene pipes, and their weight can almost be ignored. Therefore, the quality of attached polyester, nylon, and spandex is included in the recycled polypropylene pipe. in.

[0032] (2) Prepare materials according to the ingredients and mass percentages shown in Table 1 and Table 2. First, dry the prepared polyester, nylon, and spandex and mix them uniformly to obtain a mixture of polyester, nylon and spandex.

[0033] (3) Mix the prepared recycled polypropylene pipeline with the above-mentioned mixture again, and perform hot-pressing treatment through a p...

Embodiment 23-27

[0046] (1) Remove dust, other plastics, iron materials and other impurities from the discarded polypropylene pipes with polyester, nylon, and spandex attached to the surface, crush them, and dry them at 120°C for 6 hours to obtain recycled polypropylene pipes. The mass is 100Kg. Polyester, nylon, and spandex attached to the surface have a relatively light specific gravity, which is about 0.5-5% of the total mass of recycled polypropylene pipes, and their weight can almost be ignored. Therefore, the quality of attached polyester, nylon, and spandex is included in the recycled polypropylene pipe. in.

[0047] (2) Prepare materials according to the ingredients and mass percentages shown in Table 5. First, the prepared polyester, nylon, and spandex are dried and mixed uniformly to obtain a mixture of polyester, nylon, and spandex.

[0048] (3) Mix the prepared recycled polypropylene pipeline with the above-mentioned mixture again, pass the banbury mixing, the banbury temperature is 22...

Embodiment 28-32

[0056] (1) Remove dust, other plastics, iron materials and other impurities from the discarded polypropylene pipes with polyester, nylon, and spandex attached to the surface, crush them, and dry them at 120°C for 6 hours to obtain recycled polypropylene pipes. The mass is 100Kg. Polyester, nylon, and spandex attached to the surface have a relatively light specific gravity, about 0.5-5% of the total mass of the recycled polypropylene pipe, and their weight can almost be ignored. Therefore, the content of attached polyester, nylon, and spandex is included in the recycled polypropylene pipe. in.

[0057] (2) Prepare materials according to the ingredients and mass percentages shown in Table 7, where the mass ratio of polyester, nylon, and spandex in the mixture of polyester, nylon, and spandex is 1:1:1.

[0058] (3) Mix the prepared recycled polypropylene pipeline with the above-mentioned mixture, and process the pellets by a pellet machine at a pellet temperature of 150°C and pellet ...

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Abstract

The invention relates to a method for recycling and preparing a modified polypropylene composite material from a waste polypropylene pipeline, and belongs to the field of high polymer material processing. The preparation method comprises the following steps: terylene, chinlon, spandex, a polypropylene pipeline attached with terylene, chinlon and spandex, a compatilizer and an antioxidant are treated by using a press vulcanizer, an aggregating machine and an internal mixer; the purpose of uniformly dispersing the mixed material and the polypropylene material is achieved; the obtained modified polypropylene is high in tensile strength; compared with the prior art, the high-molecular regenerated material has the advantages that the flexibility and elasticity are better, the bending property is good, the toughness is high, the high-molecular regenerated material with excellent comprehensive mechanical properties is prepared, the utilization efficiency of a polypropylene pipeline to which terylene, chinlon and spandex are attached is improved, secondary pollution is reduced, the economic benefit of reutilization is increased, and the high-molecular regenerated material has relatively advanced process technology and application value.

Description

[0001] Invention field [0002] The invention relates to a method for recovering and preparing modified polypropylene composite materials from discarded polypropylene pipes, and belongs to the field of polymer material processing. Background technique [0003] Some waste polypropylene pipes have short fiber mixed materials such as polyester, nylon, and spandex adhered to the outside. After polypropylene pipes are adhered with short fiber mixed materials such as polyester, nylon, and spandex, the waste and recycled materials become more complicated to recycle. They are usually disposed of through incineration, landfill, etc., which wastes materials and is The environment has a serious impact. [0004] The literature search found that there are many studies on the use of recycled polyester materials to modify polypropylene, but there are few studies on the use of polyester, nylon, spandex and other short fiber blend materials to modify polypropylene. Polyester, nylon, and spandex hyb...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L67/02C08L77/00C08L75/04C08L51/06
CPCC08L23/12C08L2205/035C08L2205/08C08L2205/05C08L2205/16C08L2207/20C08L2205/025C08L67/02C08L77/00C08L75/04C08L51/06
Inventor 匡新谋苏敏茹袁正勇
Owner NINGBO POLYTECHNIC
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