Environment-friendly EVA waterproof coil and preparation method thereof

A kind of waterproof roll material and environment-friendly technology, which is applied in the field of tunnel waterproof materials, can solve the problems of affecting welding performance, separation of mixed phases of powder and granular materials, closed and narrow space of construction tunnels, etc., and achieves good anti-aging performance and flame retardant performance , avoid phase separation and precipitation, and reduce the effect of relative addition amount

Inactive Publication Date: 2018-09-04
铁科腾跃科技有限公司
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the EVA waterproof membrane on the market mainly has the following disadvantages: 1) Since the main raw material of the EVA waterproof membrane is polyethylene, but the aging resistance and flame retardancy of polyethylene are very poor (among them, the EVA waterproof membrane Aging resistance includes two aspects of photoaging and thermal oxygen aging), so the use effect is poor; although the aging problem of some EVA waterproof membranes has been basically solved, too much attention has been paid to photoaging in the process of solving the aging problem However, in the process of tunnel waterproofing, the waterproofing membrane is mainly based on thermal oxygen aging, so the problem of thermal oxygen aging is still one of the problems that need to be solved. ;2) The limiting oxygen index of polyethylene, the raw material of EVA waterproof membrane, is 17.4%, which is flammable and will continue to burn after leaving the fire source, accompanied by molten dripping. The use of welding will easily cause the waterproof membrane to catch fire, and the space in the construction tunnel is closed and narrow, and the smoke and poisonous gas released by combustion cannot be

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Environment-friendly EVA waterproof coil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] A preparation method of environmentally friendly EVA waterproof coiled material specifically includes the following steps:

[0039] A. Weigh the corresponding raw materials according to the ratio.

[0040] The anti-aging-flame retardant masterbatch is first prepared before the raw materials are weighed. The preparation method of the anti-aging-flame retardant masterbatch includes the following steps:

[0041] A1. Grind the flame retardant and flame retardant synergist and pass through 800 mesh sieve;

[0042] A2. Add the flame retardant and flame retardant synergist to the high-speed mixer preheated to 70-90℃, add the coupling agent and mix for activation for 5-10 minutes;

[0043] A3. Weigh light stabilizer, antioxidant, and heat stabilizer according to the ratio and add them to the high-speed mixer and stir for 5-10 minutes;

[0044] A4. Weigh ethylene-vinyl acetate copolymer, metallocene polyethylene and high-density polyethylene according to the ratio and add them to the high-...

Example Embodiment

[0051] Example 1

[0052] An environmentally friendly EVA waterproofing membrane, comprising the following components in weight fraction: 30% of ethylene-vinyl acetate copolymer EVA (VA content 18%), 15% of metallocene polyethylene mPE, and 40% of high-density polyethylene HDPE %, anti-aging-flame retardant masterbatch 15%. Among them, the anti-aging-flame retardant masterbatch includes the following components in weight fraction: ethylene-vinyl acetate copolymer EVA (VA content 18%) 25%, metallocene polyethylene mPE is 5%, high-density polyethylene HDPE is 5% , The ultraviolet absorber UV-327 is 2%, the free radical trapping agent LS744 is 1%, the hindered phenolic antioxidant 1010 is 3%, the auxiliary antioxidant 168 is 4%, and the main stabilizer zinc stearate is 5% , Auxiliary stabilizer triphenyl phosphite is 2%, flame retardant organosilanolamide is 30%, phosphoric acid ester is 10%, flame retardant synergist magnesium stearate is 5%, silane coupling agent is 1%, EVA wax ...

Example Embodiment

[0058] Example 2

[0059] In this embodiment, the environmentally friendly EVA waterproof membrane includes the following components in weight fraction: ethylene-vinyl acetate copolymer EVA (VA content 28%) is 20%, metallocene polyethylene mPE is 30%, and high-density polyethylene HDPE It is 35%, anti-aging-15% flame retardant masterbatch. Among them, the anti-aging-flame retardant masterbatch includes the following components in weight fraction: ethylene-vinyl acetate copolymer EVA (VA content 28%) 20%, metallocene polyethylene mPE is 5%, and high-density polyethylene HDPE is 5% , UV absorber UV-531 is 2%, free radical trapping agent LS744 is 1%, hindered phenolic antioxidant 1076 is 5%, auxiliary antioxidant 168 is 7%, main stabilizer zinc stearate is 5% , Auxiliary stabilizer triphenyl phosphite is 2%, flame retardant organosilanolamide is 30%, phosphoric acid ester is 10%, flame retardant synergist magnesium stearate is 5%, silane coupling agent is 1%, EVA wax is 2%.

[0060...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses an environment-friendly EVA waterproof coil and a preparation method thereof. The environment-friendly EVA waterproof coil is prepared from the following components: an ethylene-vinyl acetate copolymer, metallocene polyethylene, high density polyethylene and anti-aging-flame retardant masterbatch, wherein the anti-aging-flame retardant masterbatch is prepared from the ethylene-vinyl acetate copolymer, the metallocene polyethylene, the high density polyethylene, a light stabilizer, an antioxidant, a heat stabilizer, a flame retardant, a flame retardant synergist, a coupling agent and a dispersing agent. The VA content of the EVA waterproof coil prepared by the invention is greater than or equal to 5 percent; the EVA waterproof coil has the advantages of excellent performance and good welding effects; anti-aging and flame retardant raw materials selected in the components can realize a mutual promotion effect, so that the EVA waterproof coil has good anti-aging properties and flame retardant properties at the same time, and further the quality of the waterproof coil is greatly improved.

Description

technical field [0001] The invention relates to the technical field of tunnel waterproof materials, in particular to an EVA waterproof coiled material and a preparation method thereof. Background technique [0002] EVA waterproof membrane is widely used in the field of tunnel waterproofing because of its excellent processing performance, mechanical properties, water impermeability, low temperature flexibility, and welding performance. [0003] At present, the EVA waterproof membrane on the market mainly has the following disadvantages: 1) Since the main raw material of the EVA waterproof membrane is polyethylene, but the aging resistance and flame retardancy of polyethylene are very poor (among them, the EVA waterproof membrane Aging resistance includes two aspects of photoaging and thermal oxygen aging), so the use effect is poor; although the aging problem of some EVA waterproof membranes has been basically solved, too much attention has been paid to photoaging in the proc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L23/08C08L23/06C08K5/00C08K5/134C08K5/526C08K5/098C08J3/22
CPCC08J3/226C08J2323/08C08J2423/06C08J2423/08C08K5/00C08K5/098C08K5/134C08K5/526C08K2201/014
Inventor 赵微微张勇刘志周傲耿月张松琦
Owner 铁科腾跃科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products