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Technology for producing hollow slabs by recovering waste plastics

A technology of waste plastics and empty boards, which is applied to other household appliances, flat products, household appliances, etc., can solve the problems of not being able to use large areas, high cost of hollow boards, and easy aging, so as to improve the profit rate of enterprises and reduce production costs , Environmentally friendly effect

Inactive Publication Date: 2015-03-04
TIANJIN LISHUN PLASTIC PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of recycled waste plastics to produce hollow boards is a major trend in the hollow board market, but the mechanical properties of hollow boards produced by recycled waste plastics are worse than those produced by new polypropylene, and they have disadvantages such as pressure difference resistance, easy breakage, and easy aging. , so that the strength of the hollow board produced by recycled plastic is not enough, which limits the application of the hollow board, and the hollow board produced by the new polypropylene is expensive and cannot be used in a large area. Therefore, the present invention provides a process for producing the hollow board by recycling waste plastic Compared with the hollow board produced by new polypropylene, the produced hollow board has the same mechanical properties, but the cost is much lower, and it is suitable for large-scale industrial production

Method used

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  • Technology for producing hollow slabs by recovering waste plastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. Pretreatment of recycled waste plastics: the recycled thermoplastic polypropylene waste plastics are crushed, cleaned, dried, added to a granulator to extrude and granulated, and recycled masterbatch is obtained;

[0017] 2. Weigh according to the following parts by weight: 40 parts of recycled masterbatch, 20 parts of new polypropylene masterbatch, 1 part of toughening agent, 1 part of antistatic agent, and 0.1 part of modifier;

[0018] 3. Add 40 parts of recycled masterbatch and 20 parts of new polypropylene masterbatch to the high-speed mixer for blending, and the speed of the high-speed mixer is 450-500r / min;

[0019] 4. Continue to add other additives into the high-speed mixer for blending, and the speed of the high-speed mixer is 800-1000r / min;

[0020] 5. Put the mixture obtained by blending into the screw extruder. The temperature of the melting and plasticizing section of the extruder is 150-170 degrees, the temperature of the equilibrium section is 170-190...

Embodiment 2

[0025] Weigh according to the following parts by weight: 60 parts of recycled masterbatch, 30 parts of new polypropylene masterbatch, 2 parts of toughening agent, 3 parts of antistatic agent, 3 parts of modifier; 2.

Embodiment 3

[0027] Weigh according to the following parts by weight: 50 parts of recycled masterbatch, 25 parts of new polypropylene masterbatch, 1.5 parts of toughening agent, 2 parts of antistatic agent, and 2 parts of modifier; other steps are the same as in Example 1 to obtain the sample 3.

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Abstract

The invention aims to provide a technology for producing hollow slabs by recovering waste plastics. The technology comprises the following steps: adding waste plastic recovery master batches, new polypropylene master batches and addition agents in a high-speed mixing and refining machine for blending, adding the mixed materials into a screw rod extruder to enable the blended materials to be squeezed into bar-shaped materials, cooling the bar-shaped materials, adding the cooled bar-shaped materials to a granule manufacturing machine for granule manufacture, and mixing the blended materials and dyeing agents according to a weight ratio of 100: (1-2); adding the mixed materials of the blended materials and the dyeing agents into an injection molding machine to be melted, and pressing and shooting the melted materials into a die to obtain a sheet material blank; performing dragging, cooling and cutting between rubber rollers of a dragger to obtain the hollow slabs. The technology disclosed by the invention has the benefits that the waste plastics which are recovered can be used for producing the hollow slabs which have a level shape and have no toxic or pollution. The dyeing agents of different colors are added to produce hollow slabs of different colors, and the mechanical parameters of the impact resistant strength, the stretching resistant strength, and the like of the produced hollow slabs all conform to outgoing requirements. The production technology reduces the production cost, improves the profit rate of enterprises, recovers and utilizes the waste plastics, and is environment-friendly.

Description

technical field [0001] The invention relates to recycling of waste plastics, in particular to a process for producing hollow boards by recycling waste plastics. Background technique [0002] Polypropylene hollow board is a kind of thin board obtained by melting and extruding polypropylene with an extruder. It has the advantages of smooth surface, light weight, high strength, and environmental protection. It is widely used in various industries. The use of recycled waste plastics to produce hollow boards is a major trend in the hollow board market, but the mechanical properties of hollow boards produced by recycled waste plastics are worse than those produced by new polypropylene, and they have disadvantages such as pressure difference resistance, easy breakage, and easy aging. , so that the strength of the hollow board produced by recycled plastic is not enough, which limits the application of the hollow board, and the hollow board produced by the new polypropylene is expens...

Claims

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Application Information

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IPC IPC(8): B29D7/00B29B9/06B29C45/78
Inventor 窦华利
Owner TIANJIN LISHUN PLASTIC PRODS
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