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EVA/LLDPE composite polymer waterproof board and manufacturing process thereof

A composite polymer and waterproof board technology, which is applied in the field of EVA/LLDPE composite polymer waterproof board and its manufacturing process, can solve the problems of waterproof boards not being tear-resistant and difficult to construct, and achieve excellent low-temperature flexibility and puncture resistance, High tensile strength and wide temperature range

Inactive Publication Date: 2011-04-13
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the disadvantages of existing waterproof boards such as not being resistant to tearing and difficult to construct, and provides an EVA / LLDPE composite polymer waterproof board and its manufacturing process. The waterproof board has corrosion resistance, aging resistance, high tensile strength and tear resistance. It has the characteristics of good cracking performance, non-toxic and tasteless, and wide temperature range. It is suitable for waterproofing of underground waterproofing projects such as basements, artificial lakes, culverts, tunnels, and subways.

Method used

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  • EVA/LLDPE composite polymer waterproof board and manufacturing process thereof
  • EVA/LLDPE composite polymer waterproof board and manufacturing process thereof

Examples

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Effect test

Embodiment 1

[0021] Example 1: Transparent EVA / LLDPE composite polymer waterproof board

[0022] An EVA / LLDPE composite polymer waterproof board is made of the following raw materials in parts by weight:

[0023] Ethylene-vinyl acetate copolymer 50 parts

[0024] Linear Low Density Polyethylene 50 parts

[0025] Antioxidant 1010 / 168 / 1076 0.75 parts

[0026] Antioxidant DLTP 0.25 parts

[0027] The manufacturing process of the EVA / LLDPE composite polymer waterproof board comprises the following steps:

[0028] (1) Ingredients: take the raw material components respectively according to the formula;

[0029] (2) Mixing: put the raw materials into a high-speed mixer, the temperature is 80°C, and the mixing time is 10-15 minutes;

[0030] (3) Blending extrusion: blending extrusion adopts a single-screw extruder, and the temperatures of the twin-screw feeding section, melting section, and metering section are (150±10)°C, (160±10)°C, (170±10)°C, and (170±10)°C, respectively. 10) °C;

[003...

Embodiment 2

[0036] Example 2: Non-transparent EVA / LLDPE composite polymer waterproof board

[0037] An EVA / LLDPE composite polymer waterproof board is made of the following raw materials in parts by weight:

[0038] Ethylene-vinyl acetate copolymer 80 parts

[0039] Linear Low Density Polyethylene 40 parts

[0040] Antioxidant 1010 / 168 / 1076 0.9 parts

[0041] Antioxidant DLTP 0.3 parts

[0042] The manufacturing process of the EVA / LLDPE composite polymer waterproof board comprises the following steps:

[0043] (1) Ingredients: take the raw material components respectively according to the formula;

[0044] (2) Mixing: Add the raw materials into a high-speed mixer, the temperature is 80°C, and the mixing time is 10-15 minutes;

[0045] (3) Blending extrusion: blending extrusion adopts a single-screw extruder, and the temperatures of the twin-screw feeding section, melting section, and metering section are (150±10)°C, (160±10)°C, (170±10)°C, and (170±10)°C, respectively. 10) °C;

[0...

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Abstract

The invention relates to a composite polymer waterproof board, which is prepared from the following components in part by weight: 30 to 90 parts of ethylene-vinyl acetate (EVA) copolymer, 20 to 50 parts of linear low density polyethylene (LLDPE) and 0.5 to 1.5 parts of antioxidant. The composite polymer waterproof board has high seepage resistance, high barrier property, high puncture resistance, no chemical pollution, and resistance to acid, alkali and various chemical substances. The invention discloses a synthetic resin polymer waterproof board with high elongation and wear resistance and a preparation method thereof. The waterproof board is suitable for water and seepage resistance of civil engineering such as various tunnels, underground civil engineering, urban subways, water conservation, artificial lakes, refuse landfills, petrochemical plant waste residue treatment sites, sewage regulating tanks and the like.

Description

Technical field: [0001] The invention relates to a waterproof board and its manufacturing process, in particular to an ethylene-vinyl acetate copolymer / linear low-density polyethylene (EVA / LLDPE) polymer waterproof board and its manufacturing process. Background technique: [0002] At present, the waterproof boards used in underground waterproofing projects generally include asphalt membranes, HDPE membranes, EPDM membranes, ECB waterproof boards, etc. When the asphalt membranes are constructed underground, the space is narrow, and hot-melt construction produces smoke. and other harmful substances, HDPE coils have poor bending properties and are not easy to construct; EPDM has high cost and is not easy to bond construction; ECB waterproof boards are slightly lower in cost, but their puncture resistance and folding resistance are poor. And the color can only be black, which is defective in many fields. In places such as subways and tunnels, there are high requirements for th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K5/134C08K5/526C08K5/372
Inventor 田凤兰段文锋张斌
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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