A kind of composite tyre base root-resistant puncturing waterproof sheet and preparation method thereof
Technical field
The present invention relates to waterproof material, more particularly to a kind of macromolecule composite tyre base root-resistant puncturing waterproof sheet and its system
Preparation Method.
Background technology
In recent years, with demand of the people to green and healthy, ecotecture is gradually paid close attention to and is developed, had particular application as
Implant system, such as planted roof, roof greening, underground garage plantation platform etc. are built in building to improve living environment,
Improve life quality.Implant system is typically to build on non-natural base, such as building floor, metope etc., to building
The protection of body, it is particularly significant especially in terms of water leakage.Traditional waterproof material or coating is mostly single high molecular material,
It is difficult to keep out the extension of plant root tip, building body is easily destroyed by plant root puncture and loses water-proof function, thus exploitation has
The waterproof material of root-resistant puncturing performance has great importance.
It is mostly that metal tire base, modified pitch or metal tire basigamy close modified pitch system that existing root-resistant puncturing waterproof material, which is,
Into.The macromolecule layers such as metal tire base both sides adherency non-woven fabrics, resistance is realized using the metal tire base such as consistency of copper foil in itself
Root;Metal and high molecular performance difference are big, and compatibility is bad, and adhesion strength and dimensional stability are poor, are easily peeled off disengagement,
And metal easily corrodes under high humidity environment.Pitch is common waterproof material, is pressed down by increasing chemical root resistance ingredient
Root resistance effect is realized in the modification of root growth processed, however in storage, transportational process segregation phenomenon easily occurs for modified pitch,
Property is uneven, and technique is relative complex, and cost is high, it is difficult to promote.The two combines and can further improve root-resistant puncturing
Performance and water resistance, but still can not solve the above problems.In addition, existing root-resistant puncturing waterproof material is opaque material
Material, and it is flexible poor, it is limited in the fields application such as special landscape design or hydroponics.
Invention content
The present invention provides a kind of composite tyre base root-resistant puncturing waterproof sheets and preparation method thereof, and which overcome the prior arts
Waterproof material present in shortcoming.
The technical solution adopted by the present invention to solve the technical problems is:A kind of composite tyre base root-resistant puncturing waterproof sheet,
The sheet material is multi-layer co-extruded composite sheet, being handed over successively by buffer layer and tire base including two outer layers and between two outer layers
At least three-decker formed for superposition;The outer layer is non-woven fabrics;The buffer layer is modified high-molecular mix polyethylene, should
Modified high-molecular mix polyethylene is by the linear low density polyethylene of 40%-60%, the metallocene and 15%- of 25%-35%
25% ethylene acrylic composition;The tire base is alternately to be superimposed at least seven layers knot formed successively by nylon layer and hot sealing layer
More than 30% structure, wherein nylon Zhan Tai bases gross mass.
As a preferred embodiment, the nonwoven layer is nonwoven polypropylene fabric or terylene non-woven fabric, described is accounted for
The 45%~65% of material gross mass.
As a preferred embodiment, the hot sealing layer is polyethylene, metallocene PE or ethylene and maleic acid
The copolymer of acid anhydride, acrylate or vinylacetate.
As a preferred embodiment, polyethylene and 20%-30% of the metallocene PE by 70%-80%
Metallocene composition.
As a preferred embodiment, the thickness ratio of the buffer layer and the tire base is 1:2-5.
As a preferred embodiment, in the tire base, the thickness ratio of hot sealing layer and nylon layer is 1-3:1.
As a preferred embodiment, the sheet material is by outer layer, buffer layer, tire base, buffer layer, tire base, slow
Rush layer, outer layer is sequentially overlapped composition, wherein each tire base is by nylon layer and hot sealing layer, alternately superposition forms successively, buffer layer with
Nylon layer is connected.
As a preferred embodiment, the thickness of the sheet material is 0.1-5mm, grammes per square metre 200g-3000g.
The preparation method of above-mentioned composite tyre base root-resistant puncturing waterproof sheet, is the spiral shell that each layer raw material is respectively fed to each layer
Melting is carried out in bar extruder and forms melt, is extruded into tube, inflation film forming is then superimposed at 100 DEG C -260 DEG C
Coextru-lamination disposal molding.
As a preferred embodiment, the extrusion combined temp of its each raw material is respectively:110 DEG C -230 of non-woven fabrics
DEG C, 100 DEG C -190 DEG C of buffer layer, 170 DEG C -200 DEG C of hot sealing layer, 230 DEG C -260 DEG C of nylon layer.
Compared to the prior art, the invention has the advantages that:
1. the present invention sheet material be multi-layer co-extruded composite sheet, by outer layer and between two outer layers by buffer layer and tire
Base's at least three-decker that alternately superposition is formed successively, wherein outer layer are non-woven fabrics, and buffer layer is that modified high-molecular mixing is poly-
Ethylene, tire base are the multi-layer compound structures of PP/PE;Non-woven fabrics has higher acid-proof alkaline, while it is whole to enhance sheet material
The tension stress of body and resistance to tearing are placed in outermost layer and are easy to the fixation that connects with other materials, while have the function of to conserve water and soil;
On the one hand buffer layer bonds outer layer and tire base, on the other hand with stronger stretching force and toughness;Tire base is compound by PE
Multilayer PP, impact strength is big, and rigidity is high;When root system of plant stretches, buffer layer gives a flexible resistance, reduces it
Effective physical barrier then plays the role of in impact, tire base, and the two is arranged alternately, and effectively root system of plant can be prevented to puncture.
2. relative to the sheet material of Metal Substrate, the compound affinity between its high molecular material of sheet material of the invention is big, compatible
Property it is high, binding force is strong, is not easy to be layered, durable, and more resistant to bending, easily shapes, and transparency is high, can application range it is more wide
It is general, special designing demand can be met, the interlayer of fruits and vegetables flowers hydroponics container is easily can be applied to, do not influence ornamental value.
3. water resistance is good, leak-preventing ability is strong, without additionally setting the waterproof layer of pitch.
4. using melting co-extrusion disposal molding, interlayer without additional binding agent and binding force is strong, be not easy to be layered, one
It is good to change effect, integral thickness 0.1-5mm, grammes per square metre 200g-3000g, and puncture-resistant more frivolous compared to the prior art and anti-
Aqueous energy is stronger.
The present invention is described in further detail with reference to the accompanying drawings and embodiments;But a kind of composite tyre base of the present invention is resistance to
Root puncture waterproof sheet and preparation method thereof is not limited to embodiment.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention 1;
Fig. 2 is the structure diagram of 1 Zhong Tai bases of the embodiment of the present invention;
Fig. 3 is the structure diagram of the embodiment of the present invention 2.
Specific embodiment
The composite tyre base root-resistant puncturing waterproof sheet of the present invention, is multi-layer co-extruded composite sheet, including two outer layers and is located at
At least three-decker formed, wherein buffer layer and outer layer phase are alternately superimposed by buffer layer and tire base successively between two outer layers
Connection.Outer layer is non-woven fabrics, can be specifically nonwoven polypropylene fabric or terylene non-woven fabric, account for the 45%~65% of sheet material gross mass,
With higher acid-proof alkaline, while enhance tension stress and the resistance to tearing of sheet material entirety, be placed in outermost layer be easy to and its
His material connects fixation, while has the function of to conserve water and soil.Buffer layer is modified high-molecular mix polyethylene, by 40%-
60% linear low density polyethylene, the metallocene of 25%-35% and the ethylene acrylic composition of 15%-25%.Metallocene line
Property low density polyethylene (LDPE) there is stronger stretching force and toughness, tensile strength is big.Ethylene acrylic (EAA) have thermoplasticity and
High caking property enhances the binding force of outer layer/buffer layer/tire base.
Tire base is alternately to be superimposed at least seven-layer structure formed successively by nylon layer and hot sealing layer, and hot sealing layer is poly- second
The copolymer of alkene, metallocene PE or ethylene and maleic anhydride, acrylate or vinylacetate, the wherein poly- second of metallocene
Alkene is made of the polyethylene of 70%-80% and the metallocene of 20%-30%.The thickness ratio of hot sealing layer and nylon layer is 1-3:1 and
More than 30% nylon Zhan Tai bases gross mass, multilayer nylon thin layer is combined by heat-sealable material, the tire base shock resistance of formation
Intensity is big, and rigidity is high, thin, plays the role of physical barrier.The integral thickness 0.1-5mm of sheet material, grammes per square metre 200g-3000g,
The thickness ratio of middle buffer layer and tire base is 1:2-5.Buffer layer and tire base are alternately superposed, and one soft one just, stretches in root system
Zhan Shi, buffer layer give a flexible resistance and elastic force effect, reduce the impact strength of root system, and tire base is effective
The impact of root system is withstood, thus plays the effect of root-resistant puncturing.In addition, the sheet material formed has very strong prevent water penetration in itself
Effect, without additionally setting waterproof coating.
The preparation method of above-mentioned composite tyre base root-resistant puncturing waterproof sheet, is the spiral shell that each layer raw material is respectively fed to each layer
Melting is carried out in bar extruder and forms melt, is extruded into tube, inflation film forming is then superimposed at 100 DEG C -260 DEG C
Coextru-lamination disposal molding.The extrusion combined temp of wherein each raw material is respectively:110 DEG C -230 DEG C of non-woven fabrics, buffer layer 100
DEG C -190 DEG C, 170 DEG C -200 DEG C of hot sealing layer, 230 DEG C -260 DEG C of nylon layer.
Embodiment 1
With reference to figure 1, the composite tyre base root-resistant puncturing waterproof sheet 100 of the present embodiment is from top to bottom outer layer 110 successively, is delayed
Layer 120, tire base 130, buffer layer 120 and outer layer 110 are rushed, wherein non-woven fabrics outer layer accounts for the 60% of gross mass, and buffer layer is to change
Property macromolecule mix polyethylene, by 50% linear low density polyethylene, 35% metallocene and 15% ethylene acrylic group
Into.With reference to figure 2, by nylon layer 131 and hot sealing layer 132, alternately superposition forms 7 layers of structure, and nylon layer 131 is with delaying for tire base 130
Layer 120 is rushed to be connected.In addition, tire base 130 also may be designed as the structure more than 7 layers, such as 11 layers of structure.120 He of buffer layer
The thickness ratio of tire base 130 is 4:13;In tire base 130, the thickness ratio of nylon layer 131 and hot sealing layer 132 is 4:9 and nylon layer
The 30% of 131 Zhan Tai bases, 130 weight.In the present embodiment, hot sealing layer 132 is metallocene PE, by 70% polyethylene and
30% metallocene composition.The integral thickness of sheet material is 0.12mm, grammes per square metre 300g.
Embodiment 2
With reference to figure 3, the composite tyre base root-resistant puncturing waterproof sheet 200 of the present embodiment is from top to bottom outer layer 210 successively, is delayed
Layer 220, tire base 230, buffer layer 220, tire base 230, buffer layer 220 and outer layer 210 are rushed, wherein non-woven fabrics outer layer accounts for total matter
The 50% of amount, buffer layer 220 is modified high-molecular mix polyethylene, by 60% linear low density polyethylene, 25% cyclopentadienyl gold
Belong to and 15% ethylene acrylic forms.The structure of tire base 230 is the same as embodiment 1.In addition, tire base 230 also may be designed as it is more
In 7 layers of structure, such as 11 layers of structure.The thickness ratio of buffer layer 220 and tire base 230 is 1:4;In tire base 230, nylon layer
Thickness ratio with hot sealing layer is 1:2 and nylon layer account for more than the 30% of tire substrate weight.In the present embodiment, hot sealing layer is metallocene
Polyethylene is made of 80% polyethylene and 20% metallocene.The integral thickness of sheet material is 0.25mm, grammes per square metre 700g.
Above-described embodiment is only used for a kind of composite tyre base root-resistant puncturing waterproof sheet and its system that further illustrate the present invention
Preparation Method, but the invention is not limited in embodiment, every technical spirit according to the present invention is appointed to what above example was made
What simple modification, equivalent change and modification, each falls in the protection domain of technical solution of the present invention.