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A flame-retardant and puncture-resistant high-barrier sheet and its preparation method

A high-barrier, puncture-resistant technology, applied in the field of building materials, can solve problems such as the need to improve the barrier performance, the waterproof effect cannot be guaranteed, and the flexibility of the sheet is reduced, and achieves the effect of saving raw materials, saving materials, and high filling capacity.

Active Publication Date: 2021-04-20
JIANGSU CANLON BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, its sheet structure has as many as nine layers, and the thickness must be greater than or equal to 1.2mm. This reduces the flexibility of the sheet, and the waterproof effect cannot be guaranteed, while consuming raw materials.
[0007] The existing Chinese patent with the application number CN201611021813.4-a metallocene polyethylene sheet with root puncture resistance, self-adhesive sheet and its preparation method, although the sheet with relatively low thickness can be obtained through process equipment, the process is complicated , the film layer structure has reached as many as seven layers, which consumes materials and the barrier performance needs to be improved

Method used

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  • A flame-retardant and puncture-resistant high-barrier sheet and its preparation method
  • A flame-retardant and puncture-resistant high-barrier sheet and its preparation method
  • A flame-retardant and puncture-resistant high-barrier sheet and its preparation method

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preparation example Construction

[0035] The preparation method of this flame-retardant puncture-resistant high-barrier sheet, the steps are as follows:

[0036] Step 1: Grind MPE resin, HDPE, halogen flame retardant masterbatch, barrier material and elastomer respectively for 10-15 minutes, mix and dry; At a temperature of 100°C, mix for 100min-140min and rotate at a speed of 800-1200r / min to obtain a blend;

[0037] Step 2: Add the blend to a high-speed internal mixer for mastication and then knead. The kneading temperature is 120°C and the kneading time is 60 minutes. mm of PE substrate layer 1;

[0038] Step 3: Weigh the raw materials according to the above components, mix MPE resin, halogen flame retardant masterbatch, barrier material and maleic anhydride modified PE resin evenly, and then add them to the high-speed mixer. Next, mix for 100min-140min, and the rotating speed is 800-1200r / min to obtain a blend;

[0039] The fourth step: Melt and plasticize the above blend through a twin-screw extruder, an...

Embodiment 9

[0071] Example 9 is the best option of the present invention, with the most excellent performance. The sheet prepared by the present invention has good thermal dimensional stability and excellent high barrier and water impermeability. The bottom is impermeable, the flame retardancy is at least above B1, and can reach Class A, flame retardant or even non-combustible, the puncture resistance is higher than the industry standard, the puncture resistance is 150N and above, and the highest can reach 200N. It has excellent low-temperature flexibility and does not produce any cracks at -40°C. It has good welding joint strength and cohesion, up to 8N / mm.

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Abstract

The invention discloses a flame-retardant and puncture-resistant high-barrier sheet and a preparation method thereof. The main point of the technical solution is that the flame-retardant and puncture-resistant high-barrier sheet has a layered structure, a two-layer supply structure or a three-layer supply structure, The two-layer supply structure includes from top to bottom: a modified PE layer and a PE base layer; the three-layer supply structure includes a modified PE layer, a PE base layer, and a modified PE layer from top to bottom. The thickness of the pierced high barrier sheet is 0.9mm. The flame-retardant and puncture-resistant high-barrier sheet has the advantages of good puncture resistance and high barrier, excellent flame-retardant performance and good dimensional stability. The thickness of the sheet is only 0.9mm, and it has good low-temperature flexibility and Waterproof barrier properties.

Description

technical field [0001] The invention relates to building materials, more specifically, it relates to a flame-retardant and puncture-resistant high-barrier sheet and a preparation method thereof. Background technique [0002] With the development of the economy and the progress of the times, the requirements for building materials are getting higher and higher, and the original building materials can no longer meet the needs of the development of the times. At present, polymer waterproof sheets are widely used in building waterproofing projects in China. Ordinary polymer waterproof materials only have ordinary waterproof functions, and cannot play the role of flame retardancy. Their functions are relatively single, and their service life is low, so their waterproof performance is not ideal. [0003] Waterproof sheets are mainly used in building walls, roofs, roads, landfills, sewage treatment stations and other places to resist external rainwater and groundwater leakage. It ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/08B32B27/18B32B7/12C08L23/08C08L51/06C08L23/06C08J3/22B29D7/01
CPCB29D7/01B32B7/12B32B27/08B32B27/18B32B27/32B32B2250/242B32B2307/306B32B2307/3065B32B2307/50B32B2307/552B32B2307/558B32B2307/71B32B2307/714B32B2307/7246B32B2307/73C08J3/22C08J2323/08C08J2423/06C08J2451/06
Inventor 李伟李忠人沈梦婷黄正良
Owner JIANGSU CANLON BUILDING MATERIALS
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