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Low molecular polymer modification polythene composite water-proof coiled material

A waterproof membrane and polymer technology, applied in the direction of textiles and papermaking, etc., can solve the problems of poor processability, increased extrusion heat moment, and decreased output, and meet production technical requirements, reduce melt viscosity, and melt The effect of body index increase

Inactive Publication Date: 2005-02-02
ARCHITECTURE DESIGN INST SHANDONG MINING COLLEGE
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Problems solved by technology

However, linear low-density polyethylene is characterized by a narrow molecular weight distribution. When producing linear low-density polyethylene by casting method to produce waterproof membrane, it has the following disadvantages: 1. Due to its large drape, the outflowing PE The lateral shrinkage of the film is large, which cannot meet the width requirement of the design. For example, the width produced by a 1.2-meter-long die head is only 1.1 meters, which cannot reach the width of the production design.
2. The linear low-density polyethylene melt has high viscosity, poor processability, and uneven thickness of the waterproof film, resulting in increased extrusion heat moment, high energy consumption, and reduced output. 3. The rheology of the melt is specific, and the flow is unstable. Easy to break and cause waste
4. The waterproof membrane produced has poor flexibility, and the construction performance is not very good when doing waterproofing projects

Method used

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  • Low molecular polymer modification polythene composite water-proof coiled material

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Embodiment 1

[0011] Embodiment one (ternary blending scheme)

[0012] Linear low density polyethylene (grade 7042) 100kg;

[0013] Silicone polymer 2kg;

[0014] Low-density polyethylene (brand 1F7B) 20kg;

[0015] Auxiliary masterbatch 4kg.

[0016] Stir and mix the above materials in the barrel evenly, suck them into the extruder with a feeder, melt and blend them in the extruder, cast them through the die to form a film, and then directly press and heat-melt them on both sides through the composite roller. Composite with polypropylene non-woven fabric, cooling and winding to form a waterproof membrane product.

[0017] The formulations of other examples are shown in Table 1, and 18 blending modification schemes are listed in Table 1. Wherein there are 9 kinds of binary blending schemes and 9 kinds of ternary blending schemes (including embodiment one).

[0018] In the table, LLDPE is the abbreviation of linear low-density polyethylene, and LDPE is the abbreviation of low-density po...

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Abstract

The invention discloses a low molecular polymer modification polyvinyl composite water-proof coiled material for recombination of polypropylene nonwoven fabrics or terylene nonwoven fabrics on the top and floor of the main waterproof layer, the linear low density polyethylene and low molecular polymeric binary blending and low density polyethylene ternary blending are conducted.

Description

Technical field: [0001] This application belongs to building waterproof materials. Background technique: [0002] The technology close to this application is patent No. 89108466.5 "resin composite non-woven fabric waterproof roll and its production method". It is made of linear low-density polyethylene as the main waterproof layer, and a layer of polypropylene filament non-woven fabric is combined on both sides as a reinforced grid. Its main advantage is that the surface has good roughness and can be directly bonded to cement materials during curing. On the grass-roots level, it is easy to construct and so on. However, linear low-density polyethylene is characterized by a narrow molecular weight distribution. When producing linear low-density polyethylene by casting method to produce waterproof membrane, it has the following disadvantages: 1. Due to its large drape, the outflowing PE The lateral shrinkage of the film is large, which cannot meet the width requirement of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/04
Inventor 曲来印马善泉修湖张大庆陈捷高登攀王立华王海永
Owner ARCHITECTURE DESIGN INST SHANDONG MINING COLLEGE
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