Waterproof roll free of folds and easy to weld

A waterproof membrane and easy-welding technology, which is applied in water conservancy projects, building insulation materials, film/sheet-like adhesives, etc., can solve the problem of laying of difficult-to-waterproof coils, welding construction between sheets, and difficult natural laying Flatness and other problems, to achieve the effect of superior welding effect, good laying compliance, and easy welding construction

Active Publication Date: 2015-04-22
河北创隆工程橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coiled materials currently used have the following defects: First, after long-term storage or stacking and transportation, the deformation of the coiled material is caused by extrusion. It is difficult to complete the laying of waterproof material coils in a short period of time, especially in low-temperature environments; second, the hot-melt temperature point is around 450 ° C, and the welding construction between sheets is difficult

Method used

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  • Waterproof roll free of folds and easy to weld

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 68 parts by weight of polyethylene, 18 parts by weight of POE, 11 parts by weight of EVA, 6 parts by weight of polyethylene toughening agent, 5 parts by weight of maleic anhydride compatibilizer and 1 part by weight of polyolefin antiaging agent.

[0015] In addition, the self-adhesive layer constituting the non-crease and easy-to-weld waterproof membrane is non-bitumen self-adhesive, and the isolation film layer is PET polyester film.

[0016] After testing, the tensile strength at break of the coil plate prepared from the above materials is 20MPa, the elongation at break is 810%, the tear strength is 105KN / m, and the welding temperature is 360°C. Paving performance is good.

Embodiment 2

[0018] 70 parts by weight of polyethylene, 16 parts by weight of POE, 10 parts by weight of EVA, 7 parts by weight of polyethylene toughening agent, 6 parts by weight of maleic anhydride compatibilizer and 1.5 parts by weight of polyolefin antiaging agent.

[0019] In addition, the self-adhesive layer constituting the non-crease and easy-to-weld waterproof membrane is non-bitumen self-adhesive, and the isolation film layer is PET polyester film.

[0020] After testing, the tensile strength at break of the coil plate prepared from the above materials is 19.8MPa, the elongation at break is 820%, the tear strength is 110KN / m, the welding temperature is 340°C, and the temperature is 42°C below zero. It paves well.

Embodiment 3

[0022] 65 parts by weight of polyethylene, 15 parts by weight of POE, 9 parts by weight of EVA, 5 parts by weight of polyethylene toughening agent, 4 parts by weight of maleic anhydride compatibilizer and 1.6 parts by weight of polyolefin antiaging agent.

[0023] In addition, the self-adhesive layer constituting the non-crease and easy-to-weld waterproof membrane is non-bitumen self-adhesive, and the isolation film layer is PET polyester film.

[0024] After testing, the tensile strength at break of the coil plate prepared from the above materials is 20.2MPa, the elongation at break is 805%, the tear strength is 102KN / m, the welding temperature is 350°C, and the temperature is 41°C below zero. It paves well.

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Abstract

The invention belongs to the technical field of waterproof materials used in water conservancy projects and building projects and particularly discloses a waterproof roll free of folds and easy to weld. According to the technical scheme, the waterproof roll free of folds and easy to weld comprises a sheet, non-asphalt self-adhesive flue layers and isolating films, wherein the non-asphalt self-adhesive flue layers are attached to one side face or two side faces of the sheet, and the self-adhesive flue layers are coated with the isolating films. The sheet comprises, by weight, 65-70 parts of polyethylene, 15-18 parts of POE, 10-12 parts of EVA, 5-7 parts of polyethylene flexibilizer, 4-6 parts of maleic anhydride compatilizer and 1-2 parts of polyolefin aging-proof agent. The waterproof roll free of folds and easy to weld has the advantages that the hot melting temperature is low, both welding and construction are easy, and compared with ordinary materials, on the premise that the excellent welding effect is guaranteed, the welding temperature is lowered by 50-80 DEG C, and power consumption of a welding device is greatly reduced; meanwhile, the tensile strength at break is high, the elongation at break is high, the tearing strength is high, and chemical corrosion resistance is achieved, and the requirement for conduction in a low-temperature environment is met.

Description

technical field [0001] The invention belongs to the technical field of waterproof materials used in water conservancy and civil engineering, and in particular relates to a crease-free and easy-to-weld waterproof coiled material and a preparation method thereof. Background technique [0002] Waterproof membrane is a new type of high-grade waterproof material developed in recent years. It is mainly used for base surface waterproofing in water conservancy and civil engineering projects. The waterproof membrane includes a synthetic resin sheet constituting its base layer, an adhesive formed of modified asphalt compounded on one or both sides of the base base layer, and an isolation film layer covering the surface of the adhesive; it is stored in rolls during the production process. or transportation. When in use, the roll material is rolled out and the isolation film layer is peeled off, and the adhesive layer is bonded to the engineering base surface to realize the function of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C08L23/06C08L23/08E04B1/66E02B3/16
Inventor 王召军高志涛李秋林李宁
Owner 河北创隆工程橡塑有限公司
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