A kind of composite tyre base root-resistant puncturing waterproof sheet and preparation method thereof
Technical field
The present invention relates to waterproof material, particularly relate to a kind of macromolecule composite tyre base root-resistant puncturing waterproof sheet and preparation side thereof
Method.
Background technology
In recent years, along with people's demand to green health, ecotecture is progressively paid close attention to and is developed, have particular application as in
Building implant system in building, such as planted roof, roof greening, underground garage plantation platform etc., to improve living environment, carry
High life quality.Implant system is typically to build in non-natural basic unit, such as, build on floor, metope etc., and it is to building body
Protection, especially particularly significant in terms of water leakage.Traditional waterproof material or coating mostly are single macromolecular material, difficult
To keep out the extension of plant root tip, easily destroyed building body by plant root puncture and lose water-proof function, thus exploitation has resistance to
The waterproof material of puncture resistance has great importance.
Existing root-resistant puncturing waterproof material is to be mostly that metal tire base, modified pitch or metal tire basigamy close modified pitch and make.
Metal tire base both sides adhere to the macromolecule layers such as non-woven fabrics, utilize the consistency of metal tire base such as Copper Foil itself to realize root resistance;Gold
Belonging to big with high molecular performance difference, compatibility is the best, and its adhesion and dimensional stability are poor, is easily peeled off disengagement, and gold
Belong to and easily corrode under high humidity environment.Colophonium is common waterproof material, by increasing chemistry root resistance composition suppression root system
The modification of growth realizes root resistance effect, but modified pitch is susceptible to segregation phenomenon in storage, transportation, and character is not
Uniformly, and technique is relative complex, and cost is high, it is difficult to promote.The two combine can further improve root-resistant puncturing performance and
Water resistance, but still the problems referred to above cannot be solved.Additionally, existing root-resistant puncturing waterproof material is all opaque material, and soft
Property poor, limited in special landscape design or the application of the field such as hydroponics.
Summary of the invention
The invention provides a kind of composite tyre base root-resistant puncturing waterproof sheet and preparation method thereof, which overcome the anti-of prior art
Weak point existing for water material.
The technical solution adopted for the present invention to solve the technical problems is: a kind of composite tyre base root-resistant puncturing waterproof sheet, described
Sheet material is multi-layer co-extruded composite sheet, including two outer layers and is replaced superposition successively by cushion and tire basic unit between two outer layers
At least three-decker formed;Described outer layer is non-woven fabrics;Described cushion is modified high-molecular mix polyethylene, and this modification is high
Molecular mixing polyethylene is by the linear low density polyethylene of 40%-60%, the metallocene of 25%-35% and the ethylene propylene of 15%-25%
Olefin(e) acid forms;Described tire basic unit is to be replaced, by nylon layer and hot sealing layer, at least seven-layer structure that superposition is formed successively, and wherein nylon accounts for
More than the 30% of tire basic unit gross mass.
As one preferred embodiment, described nonwoven layer is nonwoven polypropylene fabric or terylene non-woven fabric, accounts for described sheet material total
The 45%~65% of quality.
As one preferred embodiment, described hot sealing layer is polyethylene, metallocene PE, or ethylene and maleic anhydride,
Acrylate or the copolymer of vinylacetate.
As one preferred embodiment, described metallocene PE is golden by the polyethylene of 70%-80% and the cyclopentadienyl of 20%-30%
Belong to composition.
As one preferred embodiment, the thickness of described cushion and described tire basic unit is than for 1:2-5.
As one preferred embodiment, in described tire basic unit, the thickness of hot sealing layer and nylon layer is than for 1-3:1.
As one preferred embodiment, described sheet material is by outer layer, cushion, tire basic unit, cushion, tire basic unit, slow
Rush layer, outer layer is sequentially overlapped composition, and wherein Ge Tai basic unit is replaced superposition successively and forms by nylon layer and hot sealing layer, cushion with
Nylon layer is connected.
As one preferred embodiment, the thickness of described sheet material is 0.1-5mm, and grammes per square metre is 200g-3000g.
The preparation method of above-mentioned composite tyre base root-resistant puncturing waterproof sheet, is to be squeezed by the screw rod that each layer raw material is respectively fed to each layer
Go out and machine carries out melted formation melt, be extruded into tube, inflation film forming, then superimposed co-extrusion at 100 DEG C-260 DEG C
Compound disposable molding.
As one preferred embodiment, the extrusion combined temp of its each raw material is respectively as follows: non-woven fabrics 110 DEG C-230 DEG C, slow
Rush 100 DEG C-190 DEG C of layer, hot sealing layer 170 DEG C-200 DEG C, nylon layer 230 DEG C-260 DEG C.
Compared to prior art, the method have the advantages that
1. the sheet material of the present invention is multi-layer co-extruded composite sheet, by outer layer and between two outer layers by cushion and tire basic unit
Replacing at least three-decker that superposition is formed successively, its ectomesoderm is non-woven fabrics, and cushion is modified high-molecular mix polyethylene,
Tire basic unit is the multi-layer compound structure of PP/PE;Non-woven fabrics has higher acid-proof alkaline, enhances overall the resisting of sheet material simultaneously
Tension force and resistance to tearing, be placed in outermost layer and be prone to connect with other materials fixing, have the effect conserved water and soil simultaneously;Cushion
On the one hand bonding outer layer and tire basic unit, on the other hand have stronger stretching force and toughness;Tire basic unit passes through PE composite multi-layer PP,
Impact strength is big, and rigidity is high;When root system of plant stretches, cushion gives a flexible resistance, reduces its impact,
Effective physical barrier effect is then played by tire basic unit, and both are arranged alternately, and can effectively stop root system of plant to puncture.
2. relative to the sheet material of Metal Substrate, the compound affinity between its macromolecular material of the sheet material of the present invention is big, compatible high,
Adhesion is strong, is difficult to layering, durable in use, and the most resistance to bending, easily shapes, and transparency is high, can range of application the most extensive,
Particular design demand can be met, easily can be applicable to the interlayer of fruit and vegerable flowers hydroponics container, do not affect sight.
3. water resistance is good, and leak-preventing ability is strong, it is not necessary to additionally arrange the waterproof layer of Colophonium.
4. using melted co-extrusion disposal molding, adhesion is strong without extra binding agent for interlayer, is difficult to layering, integration
Effective, integral thickness is 0.1-5mm, grammes per square metre 200g-3000g, and puncture-resistant the most frivolous compared to prior art and waterproof
Performance is higher.
Below in conjunction with drawings and Examples, the present invention is described in further detail;But a kind of composite tyre Ji Naigen of the present invention wears
Thorn waterproof sheet and preparation method thereof is not limited to embodiment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the structural representation of the embodiment of the present invention 1 Zhong Tai basic unit;
Fig. 3 is the structural representation of the embodiment of the present invention 2.
Detailed description of the invention
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 be positioned at outside two
Being replaced, between Ceng, at least three-decker that superposition is formed successively by cushion and tire basic unit, wherein cushion is connected with outer layer.
Outer layer is non-woven fabrics, can be specifically nonwoven polypropylene fabric or terylene non-woven fabric, accounts for the 45%~65% of sheet material gross mass, has relatively
High acid-proof alkaline, enhances the overall tension stress of sheet material and resistance to tearing simultaneously, is placed in outermost layer and is prone to and other material phases
Connect fixing, there is the effect conserved water and soil simultaneously.Cushion is modified high-molecular mix polyethylene, linear by 40%-60%
Low Density Polyethylene, the metallocene of 25%-35% and the ethylene acrylic composition of 15%-25%.The poly-second of metallocene linear low density
Alkene has stronger stretching force and toughness, and tensile strength is big.Ethylene acrylic (EAA) has thermoplasticity and high bonding
Property, enhance the adhesion of outer layer/cushion/tire basic unit.
Tire basic unit is to be replaced, by nylon layer and hot sealing layer, at least seven-layer structure that superposition is formed successively, and hot sealing layer is polyethylene, cyclopentadienyl
Metal polyethylene, or ethylene and maleic anhydride, acrylate or the copolymer of vinylacetate, wherein metallocene PE by
The polyethylene of 70%-80% and the metallocene composition of 20%-30%.The thickness of hot sealing layer and nylon layer accounts for tire than for 1-3:1 and nylon
More than the 30% of basic unit's gross mass, multilamellar nylon thin layer is combined by heat-sealable material, and the tire basic unit impact strength of formation is big, just
Property high, thin, play the effect of physical barrier.The integral thickness 0.1-5mm of sheet material, grammes per square metre is 200g-3000g, wherein buffers
The thickness of layer and tire basic unit ratio is for 1:2-5.Cushion and tire basic unit replace superposition and arrange, and one soft one just, when root system stretches,
Cushion gives a flexible resistance and elastic force effect, reduces the impact strength of root system, and tire basic unit effectively withstands
The impact of root system, thus play the effect of root-resistant puncturing.Additionally, the sheet material itself formed has the strongest effect that prevents water penetration,
Without additionally arranging waterproof coating.
The preparation method of above-mentioned composite tyre base root-resistant puncturing waterproof sheet, is to be squeezed by the screw rod that each layer raw material is respectively fed to each layer
Go out and machine carries out melted formation melt, be extruded into tube, inflation film forming, then superimposed co-extrusion at 100 DEG C-260 DEG C
Compound disposable molding.The extrusion combined temp of the most each raw material is respectively as follows: non-woven fabrics 110 DEG C-230 DEG C, cushion 100 DEG C
-190 DEG C, hot sealing layer 170 DEG C-200 DEG C, nylon layer 230 DEG C-260 DEG C.
Embodiment 1
With reference to Fig. 1, the composite tyre base root-resistant puncturing waterproof sheet 100 of the present embodiment is outer layer 110 the most successively, buffering
Layer 120, tire basic unit 130, cushion 120 and outer layer 110, wherein non-woven fabrics outer layer accounts for the 60% of gross mass, and cushion is
Modified high-molecular mix polyethylene, by the linear low density polyethylene of 50%, the metallocene of 35% and the ethylene acrylic of 15%
Composition.With reference to Fig. 2, tire basic unit 130 is formed 7 Rotating fields, and nylon layer by nylon layer 131 and hot sealing layer 132 alternately superposition
131 are connected with cushion 120.Additionally, tire basic unit 130 also may be designed as the structure more than 7 layers, such as 11 Rotating fields.
The thickness of cushion 120 and tire basic unit 130 is than for 4:13;In tire basic unit 130, nylon layer 131 and the thickness of hot sealing layer 132
Degree is than for 4:9 and the 30% of nylon layer 131 Zhan Tai basic unit 130 weight.In the present embodiment, hot sealing layer 132 is that metallocene gathers
Ethylene, is made up of the polyethylene of 70% and the metallocene of 30%.The integral thickness of sheet material is 0.12mm, grammes per square metre 300g.
Embodiment 2
With reference to Fig. 3, the composite tyre base root-resistant puncturing waterproof sheet 200 of the present embodiment is outer layer 210 the most successively, buffering
Layer 220, tire basic unit 230, cushion 220, tire basic unit 230, cushion 220 and outer layer 210, wherein non-woven fabrics outer layer accounts for
The 50% of gross mass, cushion 220 is modified high-molecular mix polyethylene, by the linear low density polyethylene of 60%, 25%
Metallocene and 15% ethylene acrylic composition.The structure of tire basic unit 230 is with embodiment 1.Additionally, tire basic unit 230 also may be used
It is designed as the structure more than 7 layers, such as 11 Rotating fields.The thickness of cushion 220 and tire basic unit 230 is than for 1:4;Tire base
In layer 230, the thickness of nylon layer and hot sealing layer accounts for more than the 30% of tire substrate weight than for 1:2 and nylon layer.The present embodiment
In, hot sealing layer is metallocene PE, is made up of the polyethylene of 80% and the metallocene of 20%.The integral thickness of sheet material is
0.25mm, grammes per square metre 700g.
Above-described embodiment is only used for further illustrating a kind of composite tyre base root-resistant puncturing waterproof sheet and the preparation side thereof of the present invention
Method, but the invention is not limited in embodiment, every according to the technical spirit of the present invention above example is made any simply
Amendment, equivalent variations and modification, each fall within the protection domain of technical solution of the present invention.