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Rubber plastic positioning rod made of modified waste plastics for high-impact subway tunnel segment

A tunnel segment, high-impact technology, applied in tunnels, tunnel linings, underground chambers, etc., can solve problems such as consumption, unsatisfactory quality of imports, etc., and achieve the effect of high shear strength

Inactive Publication Date: 2012-09-05
周修君
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tube piece factory only uses the technology of positioning rods, and the investment in molds costs tens of millions of yuan. In 2006, it has been installed with positioning rods imported from France. Shear strength is always 4KN

Method used

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  • Rubber plastic positioning rod made of modified waste plastics for high-impact subway tunnel segment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take the following ingredients:

[0025] ① 100 kg of PP grade 1 recycled material (high impact resistant recycled material)

[0026] ②PE grade 1 return material 65 kg (low density PE return material)

[0027] ③ Thermoplastic styrene-butadiene rubber 15 kg (SBS)

[0028] ④ EVA return material 6 kg

[0029] ⑤SMA resin 2 kg

[0030] ⑥ Polyolefin elastomer POE 5 kg.

[0031] The above-mentioned raw materials are mixed by a high-speed mixer, a low-speed cold mixer, and an automatic vacuum feeder, and then granulated by a building block-type automatic twin-screw granulator, and cooled; then add the required The color material is shaped by a single-screw extruder, shaped in a vacuum calibrating box, cooled in a water tank, drawn and cut, and finally printed and packaged to obtain a positioning bar.

Embodiment 2

[0033] Processing technology is with embodiment 1, adopts following formula:

[0034] ① 100 kg of PP grade 1 recycled material (high impact resistant recycled material)

[0035] ②PE grade 1 return material 65 kg (low density PE return material)

[0036] ③ Thermoplastic styrene-butadiene rubber 6 kg (SBS)

[0037] ④ EVA return material 8 kg

[0038] ⑤SMA resin 1 kg

[0039] ⑥polyolefin elastomer POE 8 kg.

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Abstract

The invention discloses a rubber plastic positioning rod made of modified waste plastics for a high-impact subway tunnel segment. The rubber plastic positioning rod special material adopts the following raw material by weight portion: 100 portions of high-impact PP recycled material, 65 portions of low-density PE recycled material, 6 to 20 portions of thermoplastic styrene-butadiene-styrene SBS, 2 to 12 portions of EVA recycled material, 1 to 8 portions of plastic compatilizer and 2 to 8 portions of plastic toughener. The invention fully utilizes the recycled materials of the waste plastics; and the obtained positioning rod has high shearing strength, and a positioning rod with 10 centimeters has more than 8KN of shearing strength, which is obviously superior to current 4KN of the shearing strength.

Description

technical field [0001] The invention relates to a polymer material used in subways, in particular, the invention is a high-impact subway tunnel segment rubber and plastic positioning bar modified by waste plastics. Background technique [0002] Tunnel subway segment rubber and plastic positioning rods were designed and manufactured in Shanghai in 2006 with reference to French tunnel subway segments to improve the technology of tunnel subway segments in my country. Due to the original technology of our country when installing tunnel subway segments, they are round The degree is poor, the gap is large when the segment is installed, and it is easy to leak, which is not as good as the roundness and small gap when the French subway segment is installed. The tube piece factory only uses the technology of positioning rods, and the investment in molds costs tens of millions of yuan. In 2006, it has been installed with positioning rods imported from France. Shear strength is always 4...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12E21D11/04C08L23/04C08L9/06C08L25/08
Inventor 周修君
Owner 周修君
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