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Environment-friendly waste PE material and preparation method thereof, and modified environment-friendly waste PE material prepared therefrom and preparation method thereof

A waste and environmental protection technology, applied in the field of environmentally friendly waste PE materials and their preparation, modified environmentally friendly waste PE materials and their preparations, can solve the problems of being unable to find, weakening of PE material performance, difficult to degrade PE plastics, etc., to broaden the scope of application and improve performance , the effect of improving performance

Active Publication Date: 2019-07-23
SANMING KANGHUA PLASTIC SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, PE plastics are difficult to degrade. In addition, most of the products processed by PE plastics will be discarded after one use. A large number of waste PE plastics are piled up randomly, which is worse for the increasingly severe environment.
At present, there is still a lack of an effective degradable PE material at home and abroad, so the recycling and reuse of waste PE materials is particularly important.
Taking PE pipes as an example, the waste PE materials that are currently recycled for secondary use have been polluted to varying degrees in the previous use process, and these pollutants are the main reason for the weakening of the performance of PE materials for secondary recycling. If the treatment of pollutants is not thorough, the direct consequence is to limit the scope of use of secondary recycled PE materials
In recent years, many domestic companies are trying to turn waste PE materials into treasures, but they cannot find a suitable treatment method that can effectively and thoroughly clean the pollutants on the surface of waste PE materials.

Method used

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  • Environment-friendly waste PE material and preparation method thereof, and modified environment-friendly waste PE material prepared therefrom and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of environment-friendly waste PE material comprises the following steps:

[0027] Step 1, one-time washing: Soak the recovered PE waste in water at a temperature of 45°C for 3 hours, filter out the water, and obtain one-time washing of PE waste;

[0028] Step 2, secondary water washing: crush the primary water-washed PE waste obtained in step 1 into granular form, and rinse with high-pressure water for 8 minutes to obtain secondary water-washed PE waste;

[0029] Step 3, drying: vacuum-dry the secondary washed PE waste obtained in Step 2 to obtain dried PE waste. The vacuum degree of vacuum drying is 0.7-5MPa, and the temperature is 43°C;

[0030] Step 4, cleaning of treatment solution Ⅰ: immerse the dried PE waste obtained in step 3 into treatment solution Ⅰ, raise the temperature to 42°C, stir at a constant temperature for 40 minutes at a constant speed of 100 r / min, and filter the PE waste to obtain a primary treatment of PE waste, of which Th...

Embodiment 2

[0035] The preparation method of environment-friendly waste PE material comprises the following steps:

[0036] Step 1, one-time washing: Soak the recovered PE waste in water at a temperature of 40°C for 4 hours, filter out the water, and obtain one-time washing of PE waste;

[0037] Step 2, secondary water washing: crush the primary water-washed PE waste obtained in step 1 into granular form, and rinse with high-pressure water for 5 minutes to obtain secondary water-washed PE waste;

[0038] Step 3, drying: vacuum-dry the secondary washed PE waste obtained in Step 2 to obtain dried PE waste. The vacuum degree of vacuum drying is 0.7 MPa and the temperature is 45°C;

[0039] Step 4, cleaning of treatment solution Ⅰ: immerse the dried PE waste obtained in step 3 into treatment solution Ⅰ, raise the temperature to 40°C, stir at a constant temperature for 50 minutes at a constant speed of 100 r / min, and filter the PE waste to obtain a primary treatment of PE waste, of which The ...

Embodiment 3

[0044] The preparation method of environment-friendly waste PE material comprises the following steps:

[0045] Step 1, one-time washing: Soak the recovered PE waste in water at a temperature of 50°C for 4 hours, filter out the water, and obtain one-time washing of PE waste;

[0046] Step 2, secondary water washing: crush the primary water-washed PE waste obtained in step 1 into granular form, and rinse with high-pressure water for 10 minutes to obtain secondary water-washed PE waste;

[0047] Step 3, drying: vacuum-dry the secondary washed PE waste obtained in Step 2 to obtain dried PE waste. The vacuum degree of vacuum drying is 0.8 MPa and the temperature is 40°C;

[0048] Step 4, cleaning of treatment solution Ⅰ: immerse the dried PE waste obtained in step 3 into treatment solution Ⅰ, raise the temperature to 45°C, stir at a constant temperature for 30 minutes at a constant speed of 150 r / min, filter the PE waste, and obtain a primary treatment of PE waste, of which The t...

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Abstract

The invention relates to an environment-friendly waste PE (polyethylene) material, a preparation method thereof, a modified environment-friendly waste PE material prepared from the environment-friendly waste PE material and a preparation method of the modified environment-friendly waste PE material, and belongs to the technical field of PE materials. The preparation method of the environment-friendly waste PE material comprises following steps: primary washing, secondary washing, drying, cleaning with a treating solution I, cleaning with a treating solution II and washing and drying. According to the waste PE material treated with the method, pollutants on the PE material are cleaned up thoroughly, so that the physical performance of the waste PE material is almost the same as that of a brand new material, and the waste PE material even can replace the brand new material; besides, the performance of the modified environment-friendly waste PE material prepared from the environment-friendly waste PE material through modification is the same as that of the brand new material or even is superior to that of the brand new material, and the modified environment-friendly waste PE material further has excellent antibacterial property.

Description

technical field [0001] The invention belongs to the technical field of PE materials, and specifically relates to an environment-friendly waste PE material and a preparation method thereof, and a modified environment-friendly waste PE material prepared by using the same and a preparation method thereof. Background technique [0002] PE plastic, namely polyethylene plastic, is one of the most important general-purpose plastics. It has excellent physical properties, and its output has always ranked first among all plastics. Polyethylene is a polymer compound obtained by the polymerization of ethylene. It is a non-polar polymer, so it has excellent acid and alkali resistance and chemical corrosion resistance. In addition, it also has good electrical properties and processability, so it is widely used It is widely used in household appliances, automobiles, packaging materials and daily necessities, and also in industrial fields such as thermal insulation materials. [0003] Howe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/06B29B17/04C11D1/83C11D3/04C11D3/06C11D3/12C11D3/20C11D3/382C08L23/06C08L51/02C08K5/375C08K5/098
CPCB29B17/0412B29B2017/0015C08J11/06C08J2323/06C08L23/06C08L2201/02C11D1/04C11D1/123C11D1/667C11D1/74C11D1/83C11D3/046C11D3/06C11D3/1246C11D3/201C11D3/2044C11D3/382C08L51/02C08K5/375C08K5/098Y02W30/52Y02W30/62
Inventor 陈建文
Owner SANMING KANGHUA PLASTIC SCI & TECH CO LTD
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