Cross-linking agent modified polyethylene geogrid and manufacturing method thereof

A technology of geogrid and manufacturing method, which is applied in the fields of soil protection, infrastructure engineering, construction, etc., to achieve the effects of improving the embrittlement of ribs, improving toughness, and reducing costs

Inactive Publication Date: 2013-06-05
NANCHANG TIANGAO ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem of the crosslinking agent modified polyethylene geogrid of the present invention is solved by the following technical scheme

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0035] A crosslinking agent modified polyethylene geogrid, its components and percentages are as follows:

[0036] HDPE 70%;

[0037] LLDPE 21%;

[0038] DCP 1%;

[0039] A-151 2%;

[0040] DBTDL 1%;

[0041] 5% of the masterbatch with a carbon black content of at least 45%.

[0042] Its manufacturing method has the following steps:

[0043] 1) Manufacture masterbatch

[0044] Blend HDPE with a percentage content of 21%, LLDPE with a percentage content of 21%, DCP with a percentage content of 1%, A-151 with a percentage content of 2% and DBTDL with a percentage content of 1%, to obtain a well-mixed blend, and then melt-extrude the blend through a parallel twin-screw extruder at 160°C to 200°C to make a masterbatch;

[0045] 2) Blending of masterbatch, color masterbatch and HDPE

[0046] The masterbatch made in step 1), the color masterbatch with a percentage content of 5%, and the remaining HDPE with a percentage content of 49% are blended to obtain a uniformly mixed ble...

specific Embodiment approach 2

[0053] A cross-linking agent modified polyethylene geogrid is basically the same as the specific embodiment 1, the difference is that:

[0054] (1) Its components and their percentages are as follows:

[0055] HDPE 68.0%;

[0056] LLDPE 26.0%;

[0057] DCP 0.5%;

[0058] A-151 0.5%;

[0059] DBTDL 0.5%;

[0060] 4.5% masterbatches with a carbon black content of at least 45%.

[0061] (2) Step 1) of its manufacturing method is to blend the HDPE with a percentage content of 26% and other components except the masterbatch.

[0062] (3) Step 2) of its manufacturing method is to blend the masterbatch made in step 1), the color masterbatch with a percentage content of 4.5%, and the HDPE with a remaining percentage content of 42%.

specific Embodiment approach 3

[0063] A cross-linking agent modified polyethylene geogrid is basically the same as the second embodiment, the difference is:

[0064] (1) Its components and their percentages are as follows:

[0065] HDPE 65%;

[0066] LLDPE 26%;

[0067] DCP 1%;

[0068] A-151 2%;

[0069] DBTDL 1%;

[0070] 5% of the masterbatch with a carbon black content of at least 45%.

[0071] (2) Step 2) of its manufacturing method is to blend the masterbatch made in step 1), the color masterbatch with a percentage content of 5%, and the HDPE with a remaining percentage content of 39%.

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Abstract

Disclosed is cross-linking agent modified polyethylene geogrid. Components with percentage content of the cross-linking agent modified polyethylene geogrid are 65% to 70% of high-density polyethylene (HDPE), 21% to 26% linear low density polyethylene (LLDPE), 0.5 % to 1% of dicumyl peroxide (DCP), 0.5% to 2% A-151, 0.5% to 1% dibutyltion dilautate (DBTDL) and 4.5% to 5% color master with carbon black content more than 45 %. The manufacturing method of the cross-linking agent modified polyethylene geogrid comprises steps as below: 1) master batch manufacturing: mixing part of HDPE, LLDPE, DCP, A-151 and DBTDL together, enabling the blend to pass through a screw extruder to be fused at the temperature of 160 DEG C to 200 DEG C to manufacture the master batch in a melting mode; 2) mixing of the master batch, the color master and remaining HDPE; 3) molding of sheet materials; 4) punching; 5) stretching. The cross-linking agent modified polyethylene geogrid improves toughness, significantly relieves the phenomenon of rib portion brittle fractures, and effectively lowers cost. Stretching length of a single rib is increased by 10 % to 20 %, strength is improved by 5 % to 10 %, and gram weight of a product is reduced by 20 % to 30 %.

Description

technical field [0001] The invention relates to a geogrid, in particular to a cross-linking agent modified polyethylene geogrid and a manufacturing method thereof. Background technique [0002] The composition and percentage content of modified polyethylene (PE) geogrid determines product performance and price cost. The existing polyethylene geogrid still has insufficient toughness, especially the ribs are prone to brittle cracks. Contents of the invention [0003] A technical problem to be solved by the present invention is to provide a cross-linking agent-modified polyethylene geogrid to make up for the above-mentioned defects of the prior art. [0004] Another technical problem to be solved by the present invention is to remedy the defects of the above-mentioned prior art, and provide a method for manufacturing cross-linking agent modified polyethylene geogrid. [0005] The technical problem of the crosslinking agent modified polyethylene geogrid of the present invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/02C08K5/14C08K5/5425C08K5/1539C08K3/04E02D3/00
Inventor 郭熙程宗瑰何迪春张建平
Owner NANCHANG TIANGAO ENVIRONMENTAL PROTECTION TECH CO LTD
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