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Preparation method and application of ultra-high molecular weight polyethylene composite film

An ultra-high molecular weight, polyethylene technology, used in applications, household appliances, flat products, etc., can solve the problems of unusable blades, complicated processes, and reduce the use range of composite films, achieve good elastic properties, and improve impact resistance. Effect

Pending Publication Date: 2020-02-21
QINGDAO ARISTOCRAT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bonding process of the composite film is to cover the composite film on the leading edge of the blade during the blade manufacturing process by means of vacuum hot pressing. The process is complicated, and it cannot be used for the existing blades, which greatly reduces the scope of use of the composite film.
At present, there is no report on its good application in the protection of wind turbine blades.

Method used

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  • Preparation method and application of ultra-high molecular weight polyethylene composite film
  • Preparation method and application of ultra-high molecular weight polyethylene composite film
  • Preparation method and application of ultra-high molecular weight polyethylene composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Use as Figure 7 In the production process shown in the upper half, the modified ultra-high molecular weight polyethylene (UPE) raw material and the ethylene-vinyl acetate copolymer (EVA) raw material are extruded through a single screw extruder to form a melt, and the melt passes through The co-extrusion mold forms a co-extrusion composite film. The screw length-to-diameter ratio of the ultra-high molecular weight polyethylene raw material extruder is 30:1, and the temperature of the four zones is set to 100, 180, 240, and 270℃; the length of the screw length of the ethylene vinyl acetate copolymer (EVA) raw material extruder The ratio is 30:1, and the temperature of the four zones is set to 100, 180, 240, and 270℃ respectively. The extrusion pressure is set to 10Mpa, cooled, calendered and shaped by a three-roll calender, and taken up by a winder. The ultra-high molecular weight polyethylene layer thickness is 200μm, the EVA layer thickness is 50μm, the total thickness...

Embodiment 2

[0046] Use as Image 6 In the production process shown, the modified ultra-high molecular weight polyethylene raw materials (UPE) and polyurethane (TPU) raw materials are extruded through a single screw extruder to form a melt, and the melt is passed through a co-extrusion die to form a co-extruded composite film. The screw length to diameter ratio of the UHMWPE material extruder is 30:1, and the temperature of the four zones is set to 100, 180, 240, and 270℃ respectively; the screw length to diameter ratio of the TPU material extruder is 30:1, and the four zones are The temperature was set to 100, 180, 240, 270°C, respectively. The extrusion pressure is set to 10Mpa, cooled, calendered and shaped by a three-roll calender, and taken up by a winder. The thickness of the UHMWPE layer is 200μm, the thickness of the TPU layer is 200μm, and the total thickness is 400μm. UPE-TPU composite film product a with a width of 500cm, such as figure 1 The product shown. The product has a pat...

Embodiment 3

[0048] Use as Figure 7 In the production process shown in the lower part, the modified ultra-high molecular weight polyethylene raw materials (UPE) and ethylene vinyl acetate copolymer (EVA) raw materials are extruded through a single screw extruder to form a melt. The extrusion die forms a co-extrusion composite film. The screw length-to-diameter ratio of the ultra-high molecular weight polyethylene raw material extruder is 30:1, and the temperature of the four zones is set to 100, 180, 240, and 270℃; the length of the screw length of the ethylene vinyl acetate copolymer (EVA) raw material extruder The ratio is 30:1, and the temperature of the four zones is set to 100, 180, 240, and 270℃ respectively. The extrusion pressure is set to 10Mpa, cooled, and then calendered and shaped by a three-roll calender. Acrylic pressure-sensitive adhesive is prepared on the EVA surface through a backing roller, and the thickness of the ultra-high molecular weight polyethylene is obtained by ...

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Abstract

The invention discloses a preparation method and an application of an ultra-high molecular weight polyethylene composite film. The preparation method of the ultra-high molecular weight polyethylene composite film includes the following steps of (1) modifying ultra-high molecular weight polyethylene: after mixing the ultra-high molecular weight polyethylene and a modifying agent, preparing modifiedultra-high molecular weight polyethylene through fusion; and (2) performing co-extrusion on the modified ultra-high molecular weight polyethylene and a thermoplastic elastomer material and / or a transition layer material so as to obtain the film. The composite film is attached to a wind power blade by adopting the manual or mechanical method according to dimension information of the high-altitudewind power blade, and thermal compression welding is performed on joints after film attachment is completed. The composite film can realize totally encapsulated protection for the wind power blade, prevents the wind power blade from being damaged by smudge and rain erosion in the service period of the wind power blade, and meanwhile has good weather resistance.

Description

Technical field [0001] The invention relates to a preparation method of a protective film for wind power blades, in particular to a preparation method and application of an ultra-high molecular weight polyethylene composite film for protecting wind power blades. Background technique [0002] Wind turbine blades are one of the core components of wind turbines. Its good design, reliable quality and superior performance are the decisive factors to ensure the normal and stable operation of wind turbines. The tip linear velocity of wind power blades can reach 80m / s during operation. At such a high speed, wind power blades, especially the leading edges of the blades, will be eroded by sand, salt spray, and raindrops in the air, which will reduce the aerodynamic performance of the blades, thereby affecting the efficiency of power generation. [0003] At present, paint protection is the most widely used in the protection of wind power blades. According to the coating performance index: s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/01B29C69/00B29C48/18B29C48/08B29C48/92B29C48/625C08L23/06C08K3/04C08J5/18B29K23/00
CPCB29C69/00B29D7/01B29K2023/06B29C48/0011B29C48/0021B29C48/022B29C48/08B29C48/18B29C48/625B29C48/92B29C2948/92514B29C2948/92704C08J5/18C08J2323/06C08J2423/06C08K3/042
Inventor 王庆昭刘鹏王志明高龙洋
Owner QINGDAO ARISTOCRAT TECH CO LTD