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Method for preparing plastic particles

A technology of plastic granules and granules, which is applied in the field of rubber and plastic materials, can solve the problems of agglomeration, slag falling, tearing, compression permanent deformation, poor dyeability, etc., and achieve the effect of cost reduction and efficient EVA regeneration

Active Publication Date: 2018-04-06
JIANGSU DAMAONIU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of tearing, compression permanent deformation and dyeing are poor, and there will be problems such as agglomeration and slag during storage
The raw materials of artificial turf particles on the market are basically EPDM rubber and SEBS elastomer, but there are also disadvantages such as poor aging performance and high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] formula:

[0031] 60 parts of recycled EVA, 35 parts of chlorinated polyethylene, 5 parts of SEBS, 30 parts of calcium carbonate, environmental plasticizer cyclohexane 1, 30 parts of nonyl 2 carboxylate, anti-aging agent 1 part of Alba, 1 part of 1010, iron Red 4 parts.

[0032] Preparation Process:

[0033] 1) Take the weight of various required materials according to the requirements of the formula;

[0034] 2) Set the temperature of the internal mixer to 90°C, put the rubber-plastic elastomer into the internal mixer, add stabilizers, fillers, plasticizers, anti-aging agents, pigments, etc. in sequence, mix for 8 minutes, and discharge the material and the next piece material to obtain rubber compound.

[0035] 3) Throw the mixed rubber into the open mill, refine, and then slice;

[0036] 4) Put the mixed film into the extruder and extrude it into a rubber sheet. The temperature of the extruder is 80-140°C, and the thickness of the rubber sheet is 8mm.

[0037] 5...

Embodiment 2

[0040] formula:

[0041] 50 parts of recycled EVA, 30 parts of chlorinated polyethylene, 20 parts of SEBS, 140 parts of calcium carbonate, 10 parts of environmentally friendly plasticizer cyclohexane, 10 parts of nonyl 2 carboxylate, 1 part of anti-aging agent Alba, 1 part of 1010, iron Green 4.5 parts.

[0042] 1) Weigh the weight of various required materials according to the requirements of the formula; put rubber and plastic elastomers, stabilizers, fillers, plasticizers, anti-aging agents, pigments, etc. into the automatic mixer and mix thoroughly.

[0043] 2) Put the mixed material into the extruder, set the temperature of the extruder at 90-140° C., extrude a strip with a diameter of 3 mm, then cool with water, and cut into pellets to obtain pellets.

[0044] 3) The particles are sent to an electron accelerator irradiator for irradiation cross-linking, and the irradiation dose is 70kGy.

[0045] 4) Put the cross-linked particles into a supercritical reaction kettle, f...

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Abstract

The invention discloses method for preparing plastic particles. The method is characterized by comprising the following steps: blending regenerated EVA (Ethylene Vinyl Acetate) particles subjected tomicrowave devulcanization serving as main raw materials and chlorinated polyethylene rubber or SEBS (Styrene Block Copolymer) so as to prepare an elastomer; adding a stabilizer, a filler, a plasticizer, an anti-aging agent and pigments; extruding rubber slabs or rubber strips by an extruder, performing irradiation crosslinking, and dicing. The obtained particles can be directly used, or can also be subjected to physical foaming so as to prepare microcellular foamed plastic particles. The particles have excellent characteristics of low cost, high elasticity, environmental protection and no toxicity, are simple in preparation process and high in production efficiency, and can be applied to plastic tracks or lawn filling.

Description

technical field [0001] The invention relates to the technical field of rubber and plastic materials, in particular to a formula and process for filling plastic granules for plastic runways and artificial turf. Background technique [0002] Plastic granules are elastomers prepared by blending plastic and rubber, which are obtained by extrusion granulation or crushing granulation. At present, plastic granules have been widely used in sports fields. In the plastic runway, plastic granules and adhesives can be mixed and paved to form a plastic field. In artificial turf, the filling of plastic granules increases the elasticity of the lawn and can buffer the impact of athletes on the bottom surface. Now many runway particles on the market are mostly made of EPDM rubber. In order to reduce costs, a large amount of plasticizers and fillers are added to them. The tearing, compression set and dyeability of this kind are poor, and there will be problems such as agglomeration and slag ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/28C08L53/02C08K13/02C08K3/26C08K5/134C08K5/01C08K5/101C08J9/12
CPCC08J9/122C08L23/0853C08J2203/08C08J2203/06C08J2323/08C08L2205/03C08J2423/28C08L2312/06C08L2207/20C08L23/286C08L53/025C08K13/02C08K2003/265C08K5/01C08K5/101C08K5/1345
Inventor 张昕张振秀
Owner JIANGSU DAMAONIU NEW MATERIAL TECH CO LTD
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