Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A recycling method and waste plastic technology, applied in the field of waste plastic recycling, can solve the problems of unsuitability for industrialized production, complex procedures, damage to plastic mechanical properties, etc., and achieve the effects of facilitating industrialized production, improving recycling performance, and high practical value
Inactive Publication Date: 2015-03-04
TIANJIN LISHUN PLASTIC PRODS
View PDF0 Cites 14 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
The existing recycling of waste plastics is mainly to classify the waste plastics according to the material, and then heat and plasticize them again. In the process of adding plasticization to the recycled plastics, the plastic macromolecular chains will be depolymerized due to uneven heating or high temperature. , the original plastic additives will also be lost, greatly destroying the mechanical properties of the plastic, making the secondary processed recycled plastic unable to reach the performance index of the new material
The modification procedures of recycled plastics in the prior art are complex and costly, and are not suitable for industrial production
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0015] The recycled waste PET plastics are crushed, cleaned, dehydrated and dried to remove water to obtain waste plastic raw materials, mixed with improver at a weight ratio of 95:5, and then added to a granulator for blending and granulation to obtain masterbatches.
[0016] Ratio of modifier components: 0.5% 2,5-dimethyl-2,5-di-tert-butylperoxyhexane, 2-(2'-hydroxy-5'-methylphenyl)benzotriazepam oxazole 2%, dioctyl phthalate 2%, polyethylene wax 0.2%, 2,2-methylenebis(4-methyl-6-butylphenol) 2%.
Embodiment 2
[0018] The recycled waste PET plastics are crushed, cleaned, dehydrated and dried to remove water to obtain waste plastic raw materials, mixed with improver at a weight ratio of 98:2, and then added to a granulator for blending and granulation to obtain masterbatches.
[0019] Ratio of modifier components: 0.5% 2,5-dimethyl-2,5-di-tert-butylperoxyhexane, 2-(2'-hydroxy-5'-methylphenyl)benzotriazepam oxazole 2%, dioctyl phthalate 2%, polyethylene wax 0.2%, 2,2-methylenebis(4-methyl-6-butylphenol) 2%.
Embodiment 3
[0021] The recycled waste PET plastics are crushed, cleaned, dehydrated and dried to remove water to obtain waste plastic raw materials, mixed with improver at a weight ratio of 95:5, and then added to a granulator for blending and granulation to obtain masterbatches.
[0022] Ratio of modifier components: 2,5-dimethyl-2,5-di-tert-butylperoxyhexane 1%, 2-(2'-hydroxy-5'-methylphenyl)benzotriazepam oxazole 5%, dioctyl phthalate 5%, polyethylene wax 0.5%, 2,2-methylene bis(4-methyl-6-butylphenol) 5%.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
A modification recovery method for waste plastic is disclosed. The following technical scheme is employed: 1) performing crushing, cleaning, dewatering and baking water removal on classified waste plastic to obtain a waste plastic raw material; 2) uniformly mixing the waste plastic raw material and a modifier according to the weight ratio of 95-98:5-2; 3) adding the mixed material into a pelletizer for blending and pelletizing; and 4) performing extrusion molding on master batch by an extruder. The modifier comprises the following compositions in percent by weight: 0-1% of a crosslinking agent, 1-5% of a light stabilizer, 1-5% of a plasticizer, 0.1-0.5% of a lubricant and 1-5% of an anti-oxidant. The beneficial effects comprise that the method has relatively good improvement on recovery of all waste plastic, and enables the performances of products prepared by using recovered plastic as a raw material to be relatively close to those of an original product. The method is simple in technology, low in cost and convenient for industrialized production, has relatively high utility value and can help to obtain relatively high economic profit.
Description
technical field [0001] The invention relates to the field of recycling waste plastics, in particular to a method for modifying and recycling waste plastics. Background technique [0002] The extensive use of plastic products has brought environmental pollution while facilitating people's lives. In order to solve the "white pollution" caused by plastics, research mainly focuses on degradable plastics and plastic recycling. Due to the high cost of research and development of degradable plastics and the inability to achieve secondary utilization, the research on plastic recycling is more worthy of development. The existing recycling of waste plastics is mainly to classify the waste plastics according to the material, and then heat and plasticize them again. In the process of adding plasticization to the recycled plastics, the plastic macromolecular chains will be depolymerized due to uneven heating or high temperature. , the original plastic additives will also be lost, great...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more