CN114030254A - Pre-laid high-polymer waterproof coiled material main body material and preparation method and application thereof - Google Patents
Pre-laid high-polymer waterproof coiled material main body material and preparation method and application thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/665—Sheets or foils impervious to water and water vapor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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Abstract
The invention relates to the field of building waterproofing, and discloses a pre-paved high-molecular waterproof coiled material main body material and a preparation method and application thereof. The material comprises a thermoplastic polyolefin layer and a high-density polyethylene layer which are laminated and compounded, wherein the thickness of the thermoplastic polyolefin layer is less than or equal to 0.3mm, and the thermoplastic polyolefin layer contains a polyolefin elastomer resin I; the high-density polyethylene layer contains the following components: high-density polyethylene resin, linear low-density polyethylene resin, polyolefin elastomer resin II, vinyl silane cross-linking agent, organic tin catalyst, initiator and color master batch. The waterproof coiled material obtained by adopting the main material of the pre-paved waterproof coiled material provided by the invention not only can meet the requirements of GB/T23457-; meanwhile, the lap joint edges can be welded by hot air, so that the lap joint quality of the long edges is ensured.
Description
Technical Field
The invention relates to the field of building waterproofing, in particular to a pre-paved high-molecular waterproof coiled material main body material and a preparation method and application thereof.
Background
At present, the omnidirectional performance detection of the high-density polyethylene pre-paved high-molecular waterproof coiled material can meet the requirements of national standard GB/T23457-2017 Pre-paved waterproof coiled material; but the long-edge lap joint adopts an adhesive mode, the lap joint construction quality is difficult to guarantee, and the leakage risk exists.
The thermoplastic polyolefin is pre-paved with the high polymer waterproof coiled material, and the long-edge lap joint can be welded by hot air, so that the lap joint quality of the coiled material can be ensured; however, the pre-paved product is soft, and the puncture strength can not meet the requirements of national standard GB/T23457-.
CN106543914A discloses a pre-laid polyolefin self-adhesive film waterproof sheet and a preparation method thereof. A pre-laid polyolefin self-adhesive film waterproof sheet is composed of two layers of structures: the polyolefin waterproof sheet comprises a polyolefin waterproof sheet layer and a self-adhesive layer, wherein the polyolefin sheet is prepared from the following raw materials in parts by mass: 65-85 parts of polyethylene, 10-25 parts of thermoplastic elastomer, 5-10 parts of polyethylene graft material, 3-8 parts of modified tackifier, 0.2-0.6 part of titanium dioxide and 0.1-0.5 part of antioxidant. The polyolefin self-adhesive film waterproof sheet prepared by the invention has the advantages of good physical and mechanical properties, good waterproof performance, moderate flexibility, good construction performance, safety and environmental protection. However, this prior art does not address improvements in puncture resistance.
Therefore, there is a need for a waterproof roll with excellent anti-leakage performance and anti-puncture strength.
Disclosure of Invention
The invention aims to overcome the defect that the existing waterproof roll cannot have excellent anti-seepage performance and puncture strength.
In order to achieve the above object, a first aspect of the present invention provides a pre-spread polymer waterproofing membrane main body material, which comprises a thermoplastic polyolefin layer (TPO layer) and a high density polyethylene layer (HDPE layer) laminated and compounded, wherein the thickness of the TPO layer is less than or equal to 0.3mm, the thickness of the HDPE layer is 0.9-1.2mm, and the TPO layer comprises a polyolefin elastomer resin I (POE resin I);
the HDPE layer contains the following components:
HDPE resin, linear low density polyethylene resin (LLDPE resin), polyolefin elastomer resin II (POE resin II), vinyl silane cross-linking agent, organic tin catalyst, initiator and color master batch;
the POE resin I and the POE resin II are the same or different and are respectively and independently selected from at least one of ethylene-octene copolymer, ethylene-propylene copolymer and ethylene-butene copolymer;
based on the total weight of the components in the HDPE layer, the HDPE resin content is 20-30wt%, the LLDPE resin content is 45-50wt%, the POE resin II content is 18-25wt%, the vinyl silane crosslinking agent content is 1.0-3.0wt%, the organotin catalyst content is 0.05-0.15wt%, the initiator content is 0.01-0.10wt%, and the color master batch content is 2.0-4.0 wt%.
A second aspect of the present invention provides a method for preparing the pre-spread polymer waterproofing membrane main body material according to the first aspect, the method comprising the following steps:
(1) carrying out first mixing on each component in the component A to obtain a mixture I; the component A contains HDPE resin, LLDPE resin, POE resin II and color master batch; and
carrying out second mixing on each component in the component B to obtain a mixture II; the component B contains a vinyl silane crosslinking agent, an organic tin catalyst and an initiator;
(2) performing a first extrusion on the mixture I and the mixture II to obtain the HDPE layer;
coating a TPO layer on the HDPE layer, and then performing hydrolysis treatment to obtain a main body material of the pre-paved high-molecular waterproof coiled material containing the laminated and compounded TPO layer and HDPE layer;
wherein the TPO layer is obtained by carrying out second extrusion on POE resin I.
The third aspect of the invention provides a use of the pre-spread polymer waterproofing membrane main body material in the first aspect in waterproofing membranes.
According to the invention, the laminated composite TPO layer and HDPE layer with a certain thickness are used as main materials of the pre-paved waterproof coiled material, and the HDPE layer adopts a composite crosslinking system of a vinyl silane crosslinking agent, an organic tin catalyst and an initiator with a certain weight, so that the omnidirectional performance can meet the requirements of GB/T23457-2017 Pre-paved waterproof coiled material, and the heat resistance and the environmental stress cracking resistance of the waterproof coiled material can be improved; meanwhile, the lap joint edges can be welded by hot air, so that the lap joint quality of the long edges is ensured.
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
As described above, the first aspect of the present invention provides a pre-paved polymer waterproofing membrane main body material, which contains a TPO layer and an HDPE layer that are laminated and compounded, wherein the thickness of the TPO layer is less than or equal to 0.3mm, the thickness of the HDPE layer is 0.9-1.2mm, and the TPO layer contains POE resin I;
the HDPE layer contains the following components:
HDPE resin, LLDPE resin, POE resin II, vinyl silane cross-linking agent, organic tin catalyst, initiator and color master batch;
the POE resin I and the POE resin II are the same or different and are respectively and independently selected from at least one of ethylene-octene copolymer, ethylene-propylene copolymer and ethylene-butene copolymer;
based on the total weight of the components in the HDPE layer, the HDPE resin content is 20-30wt%, the LLDPE resin content is 45-50wt%, the POE resin II content is 18-25wt%, the vinyl silane crosslinking agent content is 1.0-3.0wt%, the organotin catalyst content is 0.05-0.15wt%, the initiator content is 0.01-0.10wt%, and the color master batch content is 2.0-4.0 wt%.
Preferably, the POE resin ii is selected from at least one of dow 8150, exxonmobil 6102, and LG chemical LC 161; the POE resin I is selected from at least one of Dow 2300 and exxonmobil 3020.
Preferably, the vinyl silane crosslinking agent is selected from at least one of vinyl trimethoxy silane (VTMS) and vinyl triethoxy silane (VTES). The inventor of the invention finds that in the preferable case, when the obtained main material is used for a waterproof roll, the roll can have better environmental stress cracking resistance.
Preferably, the organic tin catalyst is at least one selected from dibutyltin dilaurate and stannous octoate. The inventor of the present invention has also found that in this preferred case, when the obtained main material is used for a waterproof roll, the roll can be made to have better heat resistance.
Preferably, the initiator is at least one selected from dicumyl peroxide, benzoyl peroxide and dicumyl hydroperoxide.
Preferably, the masterbatch is selected from at least one of PE masterbatches.
It should be noted that, the method for preparing the pre-spread polymer waterproof roll main body material is not particularly limited in the present invention, and those skilled in the art can select the method according to the technical means known in the art. However, in order to make the waterproof roll material prepared by using the pre-spread polymer waterproof roll material main body material of the present invention have better anti-leakage performance, as mentioned above, the second aspect of the present invention provides a method for preparing the pre-spread polymer waterproof roll material main body material described in the first aspect, the method comprises the following steps:
(1) carrying out first mixing on each component in the component A to obtain a mixture I; the component A contains HDPE resin, LLDPE resin, POE resin II and color master batch; and
carrying out second mixing on each component in the component B to obtain a mixture II; the component B contains a vinyl silane crosslinking agent, an organic tin catalyst and an initiator;
(2) performing a first extrusion on the mixture I and the mixture II to obtain the HDPE layer;
coating a TPO layer on the HDPE layer, and then performing hydrolysis treatment to obtain a main body material of the pre-paved high-molecular waterproof coiled material containing the laminated and compounded TPO layer and HDPE layer;
wherein the TPO layer is obtained by carrying out second extrusion on POE resin I.
Preferably, in step (1), the first mixing condition at least satisfies: stirring at 40-60rpm at 80-100 deg.C for 60-120 min.
According to a preferred embodiment, in step (1), the second mixing conditions at least satisfy: stirring at 10-20rpm at 20-30 deg.C for 60-120 min.
According to another preferred embodiment, the conditions of the first extrusion and the second extrusion each independently at least satisfy: the temperature is 200 ℃ and 220 ℃, and the speed is 2-3 m/min.
Preferably, the conditions of the hydrolysis treatment at least satisfy: the temperature is 60-90 ℃ and the time is 12-24 h.
It should be noted that the present invention does not specifically limit the manner of the hydrolysis treatment, and those skilled in the art can select the hydrolysis treatment according to the technical means known in the art, and the following description of the present invention exemplarily provides a preferred embodiment, and those skilled in the art should not be construed as limiting the present invention.
As described above, the third aspect of the present invention provides a use of the pre-spread polymer waterproofing membrane main body material described in the first aspect in waterproofing membranes.
The present invention will be described in detail below by way of examples. In the following examples, various raw materials used are commercially available ones unless otherwise specified.
HDPE resin: the designation TR144, available from Mount petrochemical company.
LLDPE resin: designation 7042, available from Guangzhou petrochemical company.
LDPE resin (low density polyethylene resin): number 1I20A, available from Yanshan petrochemical company.
POE resin I: ethylene-octene copolymer, designation 2300, available from dow chemical company.
POE resin II: ethylene-octene copolymer, number 8150, available from the dow chemical company.
Styrenic TPE resin (TPES): styrene block copolymer, number 0012, was purchased from Highen New materials science and technology Co., Ltd, Dongguan.
Vinyl silane crosslinking agent:
a crosslinking agent I: vinyl trimethoxysilane, designation KH-171, was purchased from Jeccard chemical, Hangzhou.
A crosslinking agent II: vinyl triethoxysilane, designation KH-151, was purchased from Jeccard, Hangzhou.
Crosslinking agent III: methyl vinyl dimethoxy silane, designation KH-1710, was purchased from Jeccard chemical, Hangzhou.
Organotin catalyst:
catalyst I: dibutyl tin dilaurate, designation T-12, was purchased from New chemical materials (Shanghai) Inc.
Catalyst II: stannous octoate, brand T-9, available from shanghai caochow chemical science and technology development ltd.
Catalyst III: dibutyl tin diacetate, designation DBTDA, available from new classic chemicals (shanghai) ltd.
Initiator:
an initiator I: dicumyl peroxide, DCP brand, available from hong baoli group ltd.
An initiator II: benzoyl peroxide, trade mark BPO, was purchased from haixiang chemical ltd, thaizhou.
Color master batch: PE color masterbatch, grade 1010, available from Meize plastic pigment, Inc. of Dongguan.
Example 1
This example illustrates that the formula in table 1 is adopted for the main material of the pre-paved waterproof polymer coil, and the main material of the pre-paved waterproof polymer coil is prepared as follows.
The preparation method of the pre-paved high-molecular waterproof coiled material main body material comprises the following steps:
(1) carrying out first mixing on each component in the component A to obtain a mixture I; the component A contains HDPE resin, LLDPE resin, POE resin II and color master batch;
the conditions of the first mixing are: stirring at the rotation speed of 50rpm for 90min at the temperature of 90 ℃;
carrying out second mixing on each component in the component B to obtain a mixture II; the component B contains a vinyl silane crosslinking agent, an organic tin catalyst and an initiator;
the conditions for the second mixing are: stirring at 23 deg.C and 15rpm for 100 min;
(2) performing a first extrusion on the mixture I and the mixture II to obtain the HDPE layer;
carrying out second extrusion on POE resin I to obtain the TPO layer; coating the TPO layer on the HDPE layer, and then performing hydrolysis treatment to obtain a main body material C1 of the pre-laid high-molecular waterproof roll containing the laminated and compounded TPO layer and HDPE layer;
the conditions of the first extrusion and the second extrusion are both: extruding at the temperature of 210 ℃ at the speed of 2.5 m/min;
the conditions of the hydrolysis treatment were: hydrolyzing in a water vapor room at 80 ℃ for 24 h.
Example 2
This example was carried out using the same procedure as example 1, except that in this example:
the formula and the process parameters of the adopted pre-paved polymer waterproof roll main material are different, and the formula and the process parameters are specifically shown in table 1.
Preparing to obtain the main material C2 of the pre-paved polymer waterproof coiled material.
Example 3
In this example, a formula and a method similar to those of example 1 are adopted to prepare a pre-paved polymer waterproof roll main body material, except that: the crosslinking agents I and the like are replaced by the crosslinking agent III, the rest is the same as the example 1, and the pre-paved high-molecular waterproof roll main body material C3 is prepared, and the details are shown in the table 1.
Example 4
In this example, a formula and a method similar to those of example 1 are adopted to prepare a pre-paved polymer waterproof roll main body material, except that: the catalyst I and the like are replaced by the catalyst III, the rest is the same as the example 1, and the pre-paved high polymer waterproof roll main body material C4 is prepared, specifically referring to Table 1.
Comparative example 1
The comparative example prepared a pre-applied polymer waterproofing membrane main material using a formulation and method similar to those of example 1, except that: the thickness of the TPO layer was 0.4mm, and the rest was the same as example 1, and a pre-spread polymer waterproofing membrane main body material DC1 was prepared, specifically referring to Table 1.
Comparative example 2
The comparative example prepared a pre-applied polymer waterproofing membrane main material using a formulation and method similar to those of example 1, except that: the HDPE layer does not use an organotin catalyst, and the rest is the same as example 1, and the pre-spread macromolecular waterproof roll main material DC2 is prepared, specifically referring to table 1.
Comparative example 3
The comparative example prepared a pre-applied polymer waterproofing membrane main material using a formulation and method similar to those of example 1, except that: the amount of the vinyl silane crosslinking agent in the HDPE layer is 5g, and the rest is the same as that in example 1, so that the pre-paved polymer waterproof roll main material DC3 is prepared, and the specific reference is shown in Table 1.
Comparative example 4
The comparative example prepared a pre-applied polymer waterproofing membrane main material using a formulation and method similar to those of example 1, except that: the amount of the polyolefin elastomer resin II in the HDPE layer was 30g, and the rest was the same as in example 1, and a pre-spread polymer waterproof roll main body material DC4 was prepared, as shown in Table 1.
Comparative example 5
The comparative example prepared a pre-applied polymer waterproofing membrane main material using a formulation and method similar to those of example 1, except that: the amount of the high-density polyethylene resin in the HDPE layer was 35g, and the rest was the same as in example 1, and a pre-spread polymer waterproof roll main body material DC5 was prepared, as shown in Table 1.
Comparative example 6
The comparative example prepared a pre-applied polymer waterproofing membrane main material using a formulation and method similar to those of example 1, except that: the polyolefin elastomer resin II and other materials in the HDPE layer are replaced by styrene TPE resin, and the rest is the same as that in the example 1, so that the main material DC6 of the pre-paved high-molecular waterproof roll is prepared, and the specific reference is made in Table 1.
Comparative example 7
The comparative example prepared a pre-applied polymer waterproofing membrane main material using a formulation and method similar to those of example 1, except that: the weight of the high-density polyethylene resin and the like in the HDPE layer is replaced by the weight of the low-density polyethylene resin, and the rest is the same as that in the example 1, so that the main body material DC7 of the pre-paved high-molecular waterproof coiled material is prepared, and the specific reference is made to the table 1.
Test example 1
The performance test of the main materials of the pre-paved waterproof polymer coil obtained in the examples and the comparative examples is as follows.
1. Leak resistance (water impermeability): the test was carried out with reference to the GB/T23457-2017 standard.
2. Puncture resistance strength: the test was carried out with reference to the GB/T23457-2017 standard.
3. Heat resistance (dimensional change rate): the test was carried out with reference to the GB/T23457-2017 standard.
4. Environmental stress cracking resistance: the test was carried out with reference to the GB/T1842-2008 standard.
5. Weldability (joint peel strength): the GB/T27789-2011 standard is used for testing.
TABLE 1
TABLE 1
TABLE 2
The results in table 2 show that the waterproof roll obtained by using the pre-paved polymer waterproof roll main body material provided by the invention can simultaneously meet the requirements of anti-leakage performance and puncture strength, and has good heat resistance, environmental stress cracking resistance and weldability.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (10)
1. A pre-paved high-molecular waterproof coiled material main body material is characterized by comprising a thermoplastic polyolefin layer and a high-density polyethylene layer which are laminated and compounded, wherein the thickness of the thermoplastic polyolefin layer is less than or equal to 0.3mm, the thickness of the high-density polyethylene layer is 0.9-1.2mm, and the thermoplastic polyolefin layer contains polyolefin elastomer resin I;
the high-density polyethylene layer contains the following components:
high-density polyethylene resin, linear low-density polyethylene resin, polyolefin elastomer resin II, vinyl silane cross-linking agent, organic tin catalyst, initiator and color master batch;
the polyolefin elastomer resin I and the polyolefin elastomer resin II are the same or different and are each independently selected from at least one of ethylene-octene copolymer, ethylene-propylene copolymer, and ethylene-butene copolymer;
based on the total weight of the components in the high-density polyethylene layer, the content of the high-density polyethylene resin is 20-30wt%, the content of the linear low-density polyethylene resin is 45-50wt%, the content of the polyolefin elastomer resin II is 18-25wt%, the content of the vinyl silane cross-linking agent is 1.0-3.0wt%, the content of the organic tin catalyst is 0.05-0.15wt%, the content of the initiator is 0.01-0.10wt%, and the content of the color master batch is 2.0-4.0 wt%.
2. The material of claim 1, wherein the vinyl silane cross-linking agent is selected from at least one of vinyl trimethoxysilane, vinyl triethoxysilane; and/or the presence of a gas in the gas,
the organic tin catalyst is at least one of dibutyltin dilaurate and stannous octoate.
3. A material according to claim 1 or 2, wherein the initiator is selected from at least one of dicumyl peroxide, benzoyl peroxide, dicumyl hydroperoxide.
4. Material according to claim 1 or 2, characterized in that the masterbatch is selected from at least one of PE masterbatches.
5. A method for preparing the pre-paved polymer waterproof coiled material main body material of any one of claims 1 to 4, which is characterized by comprising the following steps:
(1) carrying out first mixing on each component in the component A to obtain a mixture I; the component A contains high-density polyethylene resin, linear low-density polyethylene resin, polyolefin elastomer resin II and color master batch; and
carrying out second mixing on each component in the component B to obtain a mixture II; the component B contains a vinyl silane crosslinking agent, an organic tin catalyst and an initiator;
(2) performing first extrusion on the mixture I and the mixture II to obtain the high-density polyethylene layer;
coating a thermoplastic polyolefin layer on the high-density polyethylene layer, and then performing hydrolysis treatment to obtain a main body material of the pre-laid high-polymer waterproof coiled material containing the laminated and compounded thermoplastic polyolefin layer and the high-density polyethylene layer;
wherein the thermoplastic polyolefin layer is obtained by second extrusion of a polyolefin elastomer resin I.
6. The method according to claim 5, wherein in step (1), the first mixing condition is at least satisfied: stirring at 40-60rpm at 80-100 deg.C for 60-120 min.
7. The method according to claim 5 or 6, wherein in step (1), the second mixing condition is at least satisfied: stirring at 10-20rpm at 20-30 deg.C for 60-120 min.
8. The method according to claim 5 or 6, wherein the conditions of the first extrusion and the second extrusion each independently at least satisfy: the temperature is 200 ℃ and 220 ℃, and the speed is 2-3 m/min.
9. The method according to claim 5 or 6, characterized in that the conditions of the hydrolysis treatment are at least such as to satisfy: the temperature is 60-90 ℃ and the time is 12-24 h.
10. Use of the pre-spread polymer waterproofing membrane main body material according to any one of claims 1 to 4 in waterproofing membranes.
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| CN117343418A (en) * | 2023-11-14 | 2024-01-05 | 云南欣城防水科技有限公司 | Ageing-resistant graphene composite HDPE waterproof coiled material and preparation method thereof |
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