CN112757736A - TPO waterproof coiled material and preparation method thereof - Google Patents

TPO waterproof coiled material and preparation method thereof Download PDF

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CN112757736A
CN112757736A CN202110088369.2A CN202110088369A CN112757736A CN 112757736 A CN112757736 A CN 112757736A CN 202110088369 A CN202110088369 A CN 202110088369A CN 112757736 A CN112757736 A CN 112757736A
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layer
parts
attapulgite
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tpo
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王聪
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
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    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
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    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
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    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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    • B32—LAYERED PRODUCTS
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    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
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    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/10—Homopolymers or copolymers of propene
    • C08J2423/12—Polypropene
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C08K3/02—Elements
    • C08K3/06—Sulfur
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    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances
    • C08K9/06—Ingredients treated with organic substances with silicon-containing compounds

Abstract

The invention discloses the technical field of high-molecular waterproof coiled materials, and provides a TPO waterproof coiled material and a preparation method thereof. The invention has good fireproof and antioxidant effects, and is provided with the enhancement layer which takes the glass fiber gridding cloth as the main base material, thereby ensuring the thickness and the strength of the coiled material, preventing the situations of folds and the like and ensuring the shaping effect of the coiled material; the modified attapulgite is obtained by acid modification of hydrochloric acid solution and modification of a coupling agent, the adsorption performance and the adsorption capacity of the modified attapulgite are greatly improved, and the rheological property is also improved.

Description

TPO waterproof coiled material and preparation method thereof
Technical Field
The invention relates to the technical field of high-molecular waterproof coiled materials, in particular to a TPO waterproof coiled material and a preparation method thereof.
Background
TPO waterproofing membrane is thermoplastic polyolefin waterproofing membrane, is with adopting advanced polymerization technique to combine together ethylene propylene rubber and polypropylene Thermoplastic Polyolefin (TPO) synthetic resin as the base stock, adds the novel waterproofing membrane that antioxidant, antiager, softener were made, can make enhancement mode waterproofing membrane with polyester fiber net check cloth as inside reinforcing material, belongs to synthetic polymer waterproofing membrane class waterproof product.
The existing TPO waterproof coiled material is of a single-layer structure in the preparation process, is single in structure, has low tensile strength, and urgently needs a TPO waterproof coiled material to solve the technical problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a TPO waterproof coiled material and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the TPO waterproof coiled material is a multilayer laminated structure formed by compounding and solidifying a fireproof flame-retardant layer, an oxidation-resistant layer, a base material layer, a reinforcing layer and a fiber backing layer; the base material layer is made of a modified thermoplastic polyolefin material, and the modified thermoplastic polyolefin material comprises the following components in parts by weight: 40-50 parts of ethylene propylene rubber, 30-40 parts of polypropylene, 5-9 parts of modified attapulgite and 0.5-1 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting for 2-3min at 185-210 ℃, adding modified attapulgite and sulfur for reacting for 5-10min, and extruding to obtain the modified thermoplastic polyolefin material.
The modified thermoplastic polyolefin material comprises the following components in parts by weight: 42-48 parts of ethylene propylene rubber, 32-38 parts of polypropylene, 6-8 parts of modified attapulgite and 0.6-0.9 part of sulfur.
The preparation method of the modified attapulgite comprises the following steps: weighing the following components in parts by weight: the weight ratio of the attapulgite to the hydrochloric acid solution to the coupling agent is (30-40): (40-55): (2-7); pouring attapulgite into a hydrochloric acid solution, uniformly stirring, standing, carrying out acid modification for 1-2h, drying and crushing the attapulgite subjected to acid modification, mixing with a coupling agent, and stirring for 0.5-1h to obtain the modified attapulgite.
The coupling agent is one or two of vinyltriethoxysilane and vinyltrimethoxysilane.
The concentration of the hydrochloric acid solution is 15-35%.
The fireproof flame-retardant layer is a melamine coating; adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting at the temperature of 130-150 ℃ for 2-3min, and extruding the antioxidation layer.
The reinforced layer is glass fiber mesh cloth; the fiber back lining layer is a polyester non-woven fabric layer.
A preparation method of TPO waterproof coiled material comprises the following steps: carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer; after the substrate layer, the oxidation resistant layer, the enhancement layer and the fiber back lining layer are subjected to hot press molding by a rolling mill, the fireproof flame-retardant layer is uniformly coated on one side of the oxidation resistant layer away from the substrate layer, and then the TPO waterproof coiled material is prepared by cooling, deviation rectifying, edge cutting, rolling and packaging.
The fireproof flame-retardant layer is uniformly coated for 2-5 times.
The coiled material is the multilayer laminated structure that is concretied by fire prevention fire-retardant layer, oxidation resisting layer, substrate layer, enhancement layer and the compound of fibre back sheet layer and forms, possesses good fire prevention, anti-oxidant effect, and is provided with the enhancement layer that uses glass fibre net cloth as main substrate, guarantees the thickness and the intensity of coiled material, and the setting effect of coiled material is guaranteed to difficult circumstances such as fold that appear.
The modified attapulgite is obtained by acid modification of hydrochloric acid solution and modification of a coupling agent, the adsorption performance and the adsorption capacity of the modified attapulgite are greatly improved, the rheological property is also improved, the modified attapulgite is applied to polypropylene modification, the modification efficiency of polypropylene can be improved, the tensile strength of the modified thermoplastic polyolefin material is improved, and the tensile strength and the ageing resistance of the prepared TPO waterproof coiled material are also improved.
Drawings
FIG. 1 is a cross-sectional view of the structure of a TPO waterproof roll according to the present invention.
In the figure: 1 fireproof flame-retardant layer, 2 antioxidation layer, 3 substrate layer, 4 enhancement layer and 5 fiber back lining layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
TPO waterproofing membrane is thermoplastic polyolefin waterproofing membrane, is with adopting advanced polymerization technique to combine together ethylene propylene rubber and polypropylene Thermoplastic Polyolefin (TPO) synthetic resin as the base stock, adds the novel waterproofing membrane that antioxidant, antiager, softener were made, can make enhancement mode waterproofing membrane with polyester fiber net check cloth as inside reinforcing material, belongs to synthetic polymer waterproofing membrane class waterproof product. The existing TPO waterproof coiled material is of a single-layer structure in the preparation process, has a single structure and low tensile strength, and needs to solve the technical problems. The invention provides a TPO waterproof coiled material which is a multilayer laminated structure formed by compounding and solidifying a fireproof flame-retardant layer 1, an oxidation-resistant layer 2, a base material layer 3, a reinforcing layer 4 and a fiber backing layer 5; the substrate layer 3 is made of a modified thermoplastic polyolefin material, and the modified thermoplastic polyolefin material comprises the following components in parts by weight: 40-50 parts of ethylene propylene rubber, 30-40 parts of polypropylene, 5-9 parts of modified attapulgite and 0.5-1 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting for 2-3min at 185-210 ℃, adding modified attapulgite and sulfur for reacting for 5-10min, and extruding to obtain the modified thermoplastic polyolefin material.
In the embodiment of the invention, the TPO waterproof coiled material is a multilayer laminated structure formed by compounding and solidifying a fireproof flame-retardant layer 1, an oxidation-resistant layer 2, a base material layer 3, a reinforcing layer 4 and a fiber backing layer 5; the substrate layer 3 is made of a modified thermoplastic polyolefin material, and the modified thermoplastic polyolefin material comprises the following components in parts by weight: 40-50 parts of ethylene propylene rubber, 30-40 parts of polypropylene, 5-9 parts of modified attapulgite and 0.5-1 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting for 2-3min at 185-210 ℃, adding modified attapulgite and sulfur for reacting for 5-10min, and extruding to obtain the modified thermoplastic polyolefin material.
According to the invention, the modified attapulgite is obtained by hydrochloric acid solution acid modification and coupling agent modification, the adsorption performance and adsorption capacity of the modified attapulgite are greatly improved, the rheological property is also improved, the modification efficiency of polypropylene can be improved when the modified attapulgite is applied to polypropylene modification, the tensile strength of a modified thermoplastic polyolefin material is improved, and the tensile strength and the ageing resistance of the prepared TPO waterproof coiled material are also improved.
In the invention, the enhancement layer 4 is glass fiber gridding cloth; the fiber back lining layer 5 is a polyester non-woven fabric layer; the fireproof flame-retardant layer 1 is a melamine coating; polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent are added into a double-screw extruder to be mixed, and the mixture is melted at the temperature of 130-150 ℃ for 2-3min and then extruded out of an oxidation resistant layer 2, so that the fireproof and oxidation resistant effects are good, and the enhancement layer which takes glass fiber mesh cloth as a main base material is arranged, the thickness and the strength of the coiled material are ensured, the situations such as wrinkles and the like are not easy to occur, and the shaping effect of the coiled material is ensured.
The technical effects of the TPO waterproof roll and the preparation method thereof of the present invention will be further described with reference to the following specific examples, but the specific implementation methods mentioned in these examples are only illustrative and explanatory of the technical solution of the present invention, and do not limit the implementation scope of the present invention, and all modifications and substitutions based on the above principles should be within the protection scope of the present invention.
Example 1
Weighing the following components in parts by weight: the weight ratio of the attapulgite to the hydrochloric acid solution with the concentration of 15-35% to the vinyltriethoxysilane is 30: 40: 2; pouring attapulgite into a hydrochloric acid solution, uniformly stirring, standing, carrying out acid modification for 1h, drying and crushing the acid-modified attapulgite, mixing with vinyltriethoxysilane, and stirring for 0.5h to obtain modified attapulgite;
weighing the following components in parts by weight: 40 parts of ethylene propylene rubber, 30 parts of polypropylene, 5 parts of modified attapulgite and 0.5 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting for 2min at 185 ℃, adding modified attapulgite and sulfur for reacting for 5min, and extruding to obtain a modified thermoplastic polyolefin material;
adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting for 2min at 130 ℃, and extruding an antioxidation layer 2;
carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer 3; after the substrate layer 3, the oxidation resistant layer 2, the glass fiber gridding cloth and the polyester non-woven fabric layer are subjected to hot press forming by a rolling mill, 2 melamine coatings are uniformly coated on one side of the oxidation resistant layer 2, which is far away from the substrate layer 3, and then the TPO waterproof coiled material is prepared by cooling, deviation rectifying, edge cutting, rolling and packaging.
Example 2
Weighing the following components in parts by weight: the weight ratio of the attapulgite to the 15% hydrochloric acid solution to the vinyltriethoxysilane is 30: 40: 2; pouring attapulgite into a hydrochloric acid solution, uniformly stirring, standing, carrying out acid modification for 1h, drying and crushing the acid-modified attapulgite, mixing with vinyltriethoxysilane, and stirring for 0.5h to obtain modified attapulgite;
weighing the following components in parts by weight: 42 parts of ethylene propylene rubber, 32 parts of polypropylene, 6 parts of modified attapulgite and 0.6 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting for 2min at 185 ℃, adding modified attapulgite and sulfur for reacting for 5min, and extruding to obtain a modified thermoplastic polyolefin material;
adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting for 2min at 130 ℃, and extruding an antioxidation layer 2;
carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer 3; after the substrate layer 3, the oxidation resistant layer 2, the glass fiber gridding cloth and the polyester non-woven fabric layer are subjected to hot press forming by a rolling mill, 2 melamine coatings are uniformly coated on one side of the oxidation resistant layer 2, which is far away from the substrate layer 3, and then the TPO waterproof coiled material is prepared by cooling, deviation rectifying, edge cutting, rolling and packaging.
Example 3
Weighing the following components in parts by weight: the weight ratio of the attapulgite to 25% hydrochloric acid solution to the vinyltrimethoxysilane is 35: 47: 4; pouring attapulgite into a hydrochloric acid solution, uniformly stirring, standing, carrying out acid modification for 1.5h, drying and crushing the attapulgite subjected to acid modification, mixing with vinyltrimethoxysilane, and stirring for 0.75h to obtain modified attapulgite;
weighing the following components in parts by weight: 45 parts of ethylene propylene rubber, 35 parts of polypropylene, 7 parts of modified attapulgite and 0.75 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting at 197 ℃ for 2.5min, adding modified attapulgite and sulfur for reaction for 7min, and extruding to obtain a modified thermoplastic polyolefin material;
adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting at 140 ℃ for 2.5min, and extruding an antioxidation layer 2;
carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer 3; after the substrate layer 3, the oxidation resistant layer 2, the glass fiber gridding cloth and the polyester non-woven fabric layer are subjected to hot press forming by a rolling mill, 4 layers of melamine coatings are uniformly coated on one side of the oxidation resistant layer 2, which is far away from the substrate layer 3, and then the TPO waterproof coiled material is prepared by cooling, deviation rectifying, trimming, cutting, rolling and packaging.
Example 4
Weighing the following components in parts by weight: the weight ratio of the attapulgite to 35% hydrochloric acid solution to the vinyltrimethoxysilane is 40: 55: 7; pouring attapulgite into a hydrochloric acid solution, uniformly stirring, standing, carrying out acid modification for 2h, drying and crushing the attapulgite subjected to acid modification, and mixing and stirring the crushed attapulgite with vinyltrimethoxysilane for 1h to obtain modified attapulgite;
weighing the following components in parts by weight: 48 parts of ethylene propylene rubber, 38 parts of polypropylene, 8 parts of modified attapulgite and 0.9 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting for 3min at 210 ℃, adding modified attapulgite and sulfur for reacting for 10min, and extruding to obtain a modified thermoplastic polyolefin material;
adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting for 3min at 150 ℃, and extruding an antioxidation layer 2;
carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer 3; after the substrate layer 3, the oxidation resistant layer 2, the glass fiber gridding cloth and the polyester non-woven fabric layer are subjected to hot press forming by a rolling mill, 5 melamine coatings are uniformly coated on one side of the oxidation resistant layer 2, which is far away from the substrate layer 3, and then the TPO waterproof coiled material is prepared by cooling, deviation rectifying, edge cutting, rolling and packaging.
Example 5
Vinyltriethoxysilane and vinyltrimethoxysilane were added as 1: 1, mixing to obtain a coupling agent;
weighing the following components in parts by weight: the weight ratio of the attapulgite to the 35% hydrochloric acid solution to the coupling agent is 40: 55: 7; pouring attapulgite into a hydrochloric acid solution, uniformly stirring, standing, carrying out acid modification for 2h, drying and crushing the attapulgite subjected to acid modification, and mixing and stirring the crushed attapulgite with a coupling agent for 1h to obtain modified attapulgite;
weighing the following components in parts by weight: 50 parts of ethylene propylene rubber, 40 parts of polypropylene, 9 parts of modified attapulgite and 1 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting for 3min at 210 ℃, adding modified attapulgite and sulfur for reacting for 10min, and extruding to obtain a modified thermoplastic polyolefin material;
adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting for 3min at 150 ℃, and extruding an antioxidation layer 2;
carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer 3; after the substrate layer 3, the oxidation resistant layer 2, the glass fiber gridding cloth and the polyester non-woven fabric layer are subjected to hot press forming by a rolling mill, 5 melamine coatings are uniformly coated on one side of the oxidation resistant layer 2, which is far away from the substrate layer 3, and then the TPO waterproof coiled material is prepared by cooling, deviation rectifying, edge cutting, rolling and packaging.
The TPO waterproof coiled material prepared in the examples 1 to 5 is subjected to performance test, and the test items comprise: tensile strength, elongation at break, thermal dimension change rate and artificial weathering, and selecting common TPO waterproof coiled materials on the market as a control group, wherein the test results are shown in Table 1:
table 1
Figure BDA0002911787760000091
In summary, it can be seen from table 1 that the TPO waterproofing membranes prepared in examples 1-5 all have better performance than the TPO waterproofing membrane of the control group, wherein the TPO waterproofing membrane prepared in example 5 has the best performance, and this example discloses: vinyltriethoxysilane and vinyltrimethoxysilane were added as 1: 1, mixing to obtain a coupling agent; weighing the following components in parts by weight: the weight ratio of the attapulgite to the 35% hydrochloric acid solution to the coupling agent is 40: 55: 7; pouring attapulgite into a hydrochloric acid solution, uniformly stirring, standing, carrying out acid modification for 2h, drying and crushing the attapulgite subjected to acid modification, and mixing and stirring the crushed attapulgite with a coupling agent for 1h to obtain modified attapulgite; weighing the following components in parts by weight: 50 parts of ethylene propylene rubber, 40 parts of polypropylene, 9 parts of modified attapulgite and 1 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting for 3min at 210 ℃, adding modified attapulgite and sulfur for reacting for 10min, and extruding to obtain a modified thermoplastic polyolefin material; adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting for 3min at 150 ℃, and extruding an antioxidation layer 2; carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer 3; after the substrate layer 3, the oxidation resistant layer 2, the glass fiber gridding cloth and the polyester non-woven fabric layer are subjected to hot press forming by a rolling mill, 5 melamine coatings are uniformly coated on one side of the oxidation resistant layer 2, which is far away from the substrate layer 3, and then the TPO waterproof coiled material is prepared by cooling, deviation rectifying, edge cutting, rolling and packaging.
Furthermore, the invention also makes systematic research on the process conditions in the TPO waterproof coiled material and the preparation method thereof, and the following test schemes which only explain that the change of the process conditions has obvious influence on the effect of the TPO waterproof coiled material are all based on the process conditions of the embodiment 3, and are concretely seen in comparative examples 1-5:
comparative example 1
Weighing the following components in parts by weight: the weight ratio of the attapulgite to the vinyl trimethoxy silane is 35: 4; drying and crushing attapulgite, and mixing and stirring the attapulgite and vinyl trimethoxy silane for 0.75h to obtain modified attapulgite;
weighing the following components in parts by weight: 45 parts of ethylene propylene rubber, 35 parts of polypropylene, 7 parts of modified attapulgite and 0.75 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting at 197 ℃ for 2.5min, adding modified attapulgite and sulfur for reaction for 7min, and extruding to obtain a modified thermoplastic polyolefin material;
adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting at 140 ℃ for 2.5min, and extruding an antioxidation layer 2;
carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer 3; after the substrate layer 3, the oxidation resistant layer 2, the glass fiber gridding cloth and the polyester non-woven fabric layer are subjected to hot press forming by a rolling mill, 4 layers of melamine coatings are uniformly coated on one side of the oxidation resistant layer 2, which is far away from the substrate layer 3, and then the TPO waterproof coiled material is prepared by cooling, deviation rectifying, trimming, cutting, rolling and packaging.
Comparative example 2
Weighing the following components in parts by weight: 45 parts of ethylene propylene rubber, 35 parts of polypropylene, 7 parts of attapulgite and 0.75 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting at 197 ℃ for 2.5min, adding attapulgite and sulfur for reaction for 7min, and extruding to obtain a modified thermoplastic polyolefin material;
adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting at 140 ℃ for 2.5min, and extruding an antioxidation layer 2;
carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer 3; after the substrate layer 3, the oxidation resistant layer 2, the glass fiber gridding cloth and the polyester non-woven fabric layer are subjected to hot press forming by a rolling mill, 4 layers of melamine coatings are uniformly coated on one side of the oxidation resistant layer 2, which is far away from the substrate layer 3, and then the TPO waterproof coiled material is prepared by cooling, deviation rectifying, trimming, cutting, rolling and packaging.
Comparative example 3
Weighing the following components in parts by weight: 45 parts of ethylene propylene rubber, 35 parts of polypropylene and 0.75 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting at 197 ℃ for 2.5min, adding sulfur for reacting for 7min, and extruding to obtain a thermoplastic polyolefin material;
adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting at 140 ℃ for 2.5min, and extruding an antioxidation layer 2;
hot-pressing a thermoplastic polyolefin material roller, and then cooling to obtain a base material layer 3; after the substrate layer 3, the oxidation resistant layer 2, the glass fiber gridding cloth and the polyester non-woven fabric layer are subjected to hot press forming by a rolling mill, 4 layers of melamine coatings are uniformly coated on one side of the oxidation resistant layer 2, which is far away from the substrate layer 3, and then the TPO waterproof coiled material is prepared by cooling, deviation rectifying, trimming, cutting, rolling and packaging.
Comparative example 4
Weighing the following components in parts by weight: the weight ratio of the attapulgite to 25% hydrochloric acid solution to the vinyltrimethoxysilane is 35: 47: 4; pouring attapulgite into a hydrochloric acid solution, uniformly stirring, standing, carrying out acid modification for 1.5h, drying and crushing the attapulgite subjected to acid modification, mixing with vinyltrimethoxysilane, and stirring for 0.75h to obtain modified attapulgite;
weighing the following components in parts by weight: 45 parts of ethylene propylene rubber, 35 parts of polypropylene, 7 parts of modified attapulgite and 0.75 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting at 197 ℃ for 2.5min, adding modified attapulgite and sulfur for reaction for 7min, and extruding to obtain a modified thermoplastic polyolefin material;
adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting at 140 ℃ for 2.5min, and extruding an antioxidation layer 2;
carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer 3; and carrying out hot press molding on the substrate layer 3, the oxidation resistant layer 2, the glass fiber gridding cloth and the polyester non-woven fabric layer by a rolling mill, and then cooling, rectifying, trimming, cutting, rolling and packaging to prepare the TPO waterproof coiled material.
Comparative example 5
Weighing the following components in parts by weight: the weight ratio of the attapulgite to 25% hydrochloric acid solution to the vinyltrimethoxysilane is 35: 47: 4; pouring attapulgite into a hydrochloric acid solution, uniformly stirring, standing, carrying out acid modification for 1.5h, drying and crushing the attapulgite subjected to acid modification, mixing with vinyltrimethoxysilane, and stirring for 0.75h to obtain modified attapulgite;
weighing the following components in parts by weight: 45 parts of ethylene propylene rubber, 35 parts of polypropylene, 7 parts of modified attapulgite and 0.75 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting at 197 ℃ for 2.5min, adding modified attapulgite and sulfur for reaction for 7min, and extruding to obtain a modified thermoplastic polyolefin material;
carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer 3; and carrying out hot press molding on the substrate layer 3, the glass fiber mesh fabric and the polyester non-woven fabric layer by a rolling mill, and then cooling, rectifying, trimming, cutting, rolling and packaging to prepare the TPO waterproof coiled material.
The TPO waterproofing membranes prepared in comparative examples 1 to 5 were subjected to performance tests, which included: the test results of the four aspects of tensile strength, elongation at break, thermal dimension change rate and artificial weathering are shown in the following table 2:
TABLE 2
Figure BDA0002911787760000141
In summary, it can be seen from table 2 that the TPO waterproofing membranes prepared in comparative examples 1 to 5 are inferior to the TPO waterproofing membrane prepared in example 3 in performance. In the process of modifying the attapulgite, the comparative example 1 does not use hydrochloric acid solution to modify the attapulgite, so that the attapulgite modified by only using the coupling agent has low adsorbability; comparative example 2 ordinary attapulgite was used when modifying polypropylene, and the effect of modifying polypropylene was not obvious; comparative example 3 no polypropylene modification was performed, i.e. the substrate layer used was a normal thermoplastic polyolefin material; comparative example 4 no fireproof flame-retardant layer consisting of melamine coating was coated in the process of preparing TPO waterproof roll; comparative example 5 does not set up the antioxidation layer on the surface of substrate layer in the process of preparing TPO waterproofing membrane, leads to the preparation gained TPO waterproofing membrane easily to age.
In conclusion, the TPO waterproof coiled material and the preparation method thereof provided in the embodiment have the advantages that the coiled material is of a multilayer laminated structure formed by compounding and solidifying a fireproof flame-retardant layer, an oxidation-resistant layer, a base material layer, a reinforcing layer and a fiber backing layer, has good fireproof and antioxidant effects, is provided with the reinforcing layer which takes glass fiber gridding cloth as a main base material, ensures the thickness and strength of the coiled material, is not prone to wrinkling and the like, and ensures the setting effect of the coiled material.
The modified attapulgite is obtained by acid modification of hydrochloric acid solution and modification of a coupling agent, the adsorption performance and the adsorption capacity of the modified attapulgite are greatly improved, the rheological property is also improved, the modified attapulgite is applied to polypropylene modification, the modification efficiency of polypropylene can be improved, the tensile strength of the modified thermoplastic polyolefin material is improved, and the tensile strength and the ageing resistance of the prepared TPO waterproof coiled material are also improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (10)

1. The TPO waterproof coiled material is characterized in that the coiled material is a multilayer laminated structure formed by compounding and solidifying a fireproof flame-retardant layer (1), an oxidation-resistant layer (2), a base material layer (3), a reinforcing layer (4) and a fiber backing layer (5);
the base material layer (3) is made of a modified thermoplastic polyolefin material, and the modified thermoplastic polyolefin material comprises the following components in parts by weight: 40-50 parts of ethylene propylene rubber, 30-40 parts of polypropylene, 5-9 parts of modified attapulgite and 0.5-1 part of sulfur; adding ethylene propylene rubber and polypropylene into a double-screw extruder for blending, melting for 2-3min at 185-210 ℃, adding modified attapulgite and sulfur for reacting for 5-10min, and extruding to obtain the modified thermoplastic polyolefin material.
2. The TPO waterproof roll material as claimed in claim 1, wherein the modified thermoplastic polyolefin material comprises the following components in parts by weight: 42-48 parts of ethylene propylene rubber, 32-38 parts of polypropylene, 6-8 parts of modified attapulgite and 0.6-0.9 part of sulfur.
3. The TPO waterproof roll material as claimed in claim 1, wherein the modified thermoplastic polyolefin material comprises the following components in parts by weight: 45 parts of ethylene propylene rubber, 35 parts of polypropylene, 7 parts of modified attapulgite and 0.75 part of sulfur.
4. The TPO waterproof roll and the preparation method thereof according to claim 1, wherein the preparation method of the modified attapulgite comprises the following steps: weighing the following components in parts by weight: the weight ratio of the attapulgite to the hydrochloric acid solution to the coupling agent is (30-40): (40-55): (2-7); pouring attapulgite into a hydrochloric acid solution, uniformly stirring, standing, carrying out acid modification for 1-2h, drying and crushing the attapulgite subjected to acid modification, mixing with a coupling agent, and stirring for 0.5-1h to obtain the modified attapulgite.
5. The TPO waterproof roll according to claim 4, wherein the coupling agent is one or two of vinyltriethoxysilane and vinyltrimethoxysilane.
6. A TPO waterproofing membrane according to claim 4 wherein the concentration of said hydrochloric acid solution is 15-35%.
7. The TPO waterproof coiled material according to claim 1, characterized in that the fireproof flame-retardant layer (1) is a melamine coating; adding polyvinyl chloride, Chimassorb2020, TinuvinXT847 and an auxiliary agent into a double-screw extruder for blending, melting at the temperature of 130-150 ℃ for 2-3min, and extruding the antioxidation layer (2).
8. The TPO waterproofing membrane according to claim 1, wherein the reinforcing layer (4) is a fiberglass mesh fabric; the fiber back lining layer (5) is a polyester non-woven fabric layer.
9. The method for preparing a TPO waterproofing membrane according to any of claims 1 to 8, comprising the steps of: carrying out hot pressing on the modified thermoplastic polyolefin material by a rolling mill, and then cooling to obtain a base material layer (3); after the base material layer (3), the oxidation resistant layer (2), the enhancement layer (4) and the fiber backing layer (5) are subjected to hot press forming by a rolling mill, the fireproof flame-retardant layer (1) is uniformly coated on one side of the oxidation resistant layer (2) far away from the base material layer (3), and then the TPO waterproof coiled material is prepared by cooling, deviation rectifying, edge cutting, rolling and packaging.
10. The TPO waterproofing membrane and the preparation method thereof according to claim 9, wherein the fireproof flame retardant layer (1) is uniformly coated 2-5 times.
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