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

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

CN102010543AInactive Publication Date: 2011-04-13BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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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

Experimental program
Comparison scheme
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

Patent Timeline
13 Apr 2011
Publication
CN102010543A
IPC
C08L23/08; C08K5/134; C08K5/526; C08K5/372
Inventors
田凤兰; 段文锋