CN106746916A - Bio-based polyurethane composite concrete material and application method - Google Patents

Bio-based polyurethane composite concrete material and application method Download PDF

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Publication number
CN106746916A
CN106746916A CN201611206904.5A CN201611206904A CN106746916A CN 106746916 A CN106746916 A CN 106746916A CN 201611206904 A CN201611206904 A CN 201611206904A CN 106746916 A CN106746916 A CN 106746916A
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CN
China
Prior art keywords
bio
concrete material
crosslinking agent
composite concrete
based polyurethane
Prior art date
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Pending
Application number
CN201611206904.5A
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Chinese (zh)
Inventor
蒋志强
尤玉静
顾群
赵�卓
吕忠达
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Ningbo University of Technology
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Ningbo University of Technology
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Application filed by Ningbo University of Technology filed Critical Ningbo University of Technology
Priority to CN201611206904.5A priority Critical patent/CN106746916A/en
Publication of CN106746916A publication Critical patent/CN106746916A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02Macromolecular compounds
    • C04B26/10Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B26/16Polyurethanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
    • C08G18/32Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3203Polyhydroxy compounds
    • C08G18/3206Polyhydroxy compounds aliphatic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
    • C08G18/32Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3271Hydroxyamines
    • C08G18/3278Hydroxyamines containing at least three hydroxy groups
    • C08G18/3281Hydroxyamines containing at least three hydroxy groups containing three hydroxy groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
    • C08G18/36Hydroxylated esters of higher fatty acids
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/08Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
    • E01D19/083Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack

Abstract

The present invention relates to a kind of bio-based polyurethane composite concrete material and application method, it is characterised in that including following weight composition:The ﹪ of polyurethane resin 10~30, compound sandstone 70~90%;Particle diameter between 0~0.15mm is 12~26wt% in the compound sandstone, between 0.15~0.6mm is 14~27wt%, particle diameter between 0.6~1.18mm is 18~28wt%, particle diameter between 1.18~2.36mm is 12~29wt%, and particle diameter between 2.36~4.75mm is 17~35wt%;Wherein, the preparation method of the polyurethane resin is as follows:Soy Polyol, polyisocyanates, crosslinking agent and accelerator are mixed, is stirred and is obtained polyurethane resin;Wherein the mass content of soy Polyol is 30~60 ﹪;The mass content of crosslinking agent is 0~10 ﹪, and the content of polyisocyanates, with isocyanate groups mole to count, is the 100 120% of the oh group sum of soy Polyol and crosslinking agent;The mass content of catalyst is 0.1~1 ﹪.

Description

Bio-based polyurethane composite concrete material and application method
Technical field
The present invention relates to engineering material, especially bio-based polyurethane composite concrete material and application method.
Background technology
A large amount of science of bridge building as shown by data, it is one of typical disease of bridge structure that pave-load layer is damaged, and drastically influence bridge The service life and safety of girder construction.Material used by current paving bridge floor is generally pitch mixing material, often because easily The factor of corrosion, frost and carbonization, causes bridge floor to split, pit, influence bridge structure and uses safety.Over time, These damages can extend to the internal structure of bridge, accelerate the infiltration of rainwater, cause reinforcement corrosion, shorten bridge life.
Chen Huifan exists《Application of the elastic polyurethane concrete in even high speed deck expansion joint disease is repaired suddenly》(《Construction Technology》, 06 phase in 2011) and a kind of polyurethane deck expansion joint material for repairing is reported, Luo Zhipeng exists《Elastic polyurethane type coagulation Native road joint glue development and application》(《Guangzhou chemistry》, 02 phase in 2004) and report a kind of polyurethane caulking material and Wei Burn it is refined《The experimental study of early-strong-fast-hard polyurethane concrete》Report a kind of containing polyurethane, curing agent and sand, stone, cement Material for road repair.But its compression strength of this several concrete is low, only 10 MPas or so, it is impossible to as deck paving material Material.
The content of the invention
The present situation that the technical problems to be solved by the invention are directed to prior art provides a kind of wearability good high intensity Bio-based polyurethane composite concrete material, so as to avoid corrosion failure of the bridge floor under complex environment, extension bridge from using the longevity Life, reduces the maintenance cost of bridge operation.
Present situation a kind of wearability of offer that another technical problem to be solved by this invention is directed to prior art is good The application method of high intensity bio-based polyurethane composite concrete material.
The present invention solve the technical scheme that is used of above-mentioned technical problem for:The bio-based polyurethane composite concrete material Material, it is characterised in that including following weight composition:
The ﹪ of polyurethane resin 10~30
Compound sandstone 70~90%
Particle diameter between 0~0.15mm is 12~26wt% in the compound sandstone, and between 0.15~0.6mm is 14 ~27wt%, particle diameter between 0.6~1.18mm is 18~28wt%, particle diameter between 1.18~2.36mm for 12~ 29wt%, particle diameter between 2.36~4.75mm is 17~35wt%;
Wherein, the preparation method of the polyurethane resin is as follows:
Soy Polyol, polyisocyanates, crosslinking agent and accelerator are mixed, is stirred and is obtained polyurethane resin;
Wherein the mass content of soy Polyol is 30~60 ﹪;The mass content of crosslinking agent is 0~10 ﹪, polyisocyanic acid The content of ester, with isocyanate groups mole to count, is the 100- of the oh group sum of soy Polyol and crosslinking agent 120%;The mass content of catalyst is 0.1~1 ﹪.
It is preferred that the soy Polyol hydroxy functionality is 3~4, hydroxyl value is 100-450;
The polyisocyanates preferably is selected from methyl diphenylene diisocyanate (MDI), and toluene di-isocyanate(TDI) (TDI) gathers At least one in methyl diphenylene diisocyanate (PMDI) and IPDI (IPDI);
The accelerator preferably is selected from being at least one in triethylamine, dibutyl tin laurate and isooctyl acid bismuth;
The crosslinking agent is the polyalcohol of reactive functionality number >=3.
Preferably, the hydroxyl value of the soy Polyol is 200-360.
It is preferred that the content of polyisocyanates is with isocyanate groups to count, it is the hydroxyl of soy Polyol and the crosslinking agent The 100-110% of group sum.
In above-mentioned each scheme, the crosslinking agent preferably is selected from glycerine, pentaerythrite, triethanolamine and trimethylolpropane It is at least one.
The application method of above-mentioned bio-based polyurethane composite concrete material, it is characterised in that comprise the steps:
To the compound sandstone is added in the polyurethane resin, mortar is uniformly mixing to obtain;
Mortar is poured into Marshall die trial, reality is hit through Apparatus for Impacting at low-temp, reacted 10-1440 minutes at 0~40 DEG C, it is also possible to Mortar is layered on road surface or bridge floor, through vibrated roller vibration compaction test, obtains polyurethane concrete pave-load layer;
It is preferred that the pavement material reacts 30~720 minutes at 5~40 DEG C.
Compared with prior art, polyurethane provided by the present invention meets concrete material has excellent abrasion resistance properties And weatherability, intensity is high, and low temperature flexibility is good, and adhesive property is excellent, bearing capacity, good endurance, and with excellent preparation It is easy with application method, it is especially suitable for large span, life requirement is high or repairs difficult high load capacity bridge deck structure In pavement material, the corrosion and destruction of reinforcing bar can be delayed, extend bridge service life, and it is cheap, volatility is low, nontoxic, holds Easily regeneration, it is environment-friendly.
Brief description of the drawings
Fig. 1 be the embodiment of the present invention 1 in polyurethane resin hardness with glycerine ratio change curve;
Fig. 2 be the embodiment of the present invention 2 in polyurethane resin compressive strength with glycerine ratio change curve;
Fig. 3 be the embodiment of the present invention 2 in polyurethane cement compressive strength with sand fraction change curve.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
In embodiment 1 to the compound sandstone used in embodiment 3, the particle diameter of sandstone is as shown in table 1.
Table 1
Screen size (mm) 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075
Percent of pass (%) 100 100 72 55 43 30 22 16
Embodiment 1
The preparation of polyurethane resin and hardness are characterized:
It is the weight portion of 200 soybean oil polyol 40 by hydroxyl value, hydroxyl value is 1937 glycerine, mixing is equal in adding plastic beaker Even, qualities of glycerin gradually increases from 0-20pph, and the poly- isocyanide of diphenyl methane two is added by degree of functionality mol ratio NCO/OH=1.05 Acid esters (PMDI), is stirred, and is subsequently adding 0.3 milliliter of accelerator isooctyl acid bismuth, and polyurethane resin is obtained after stirring.
20 parts by weight of polyurethane resins and the compound sandstone of 80 weight portions are taken, is poured into mould, 300 points are reacted at 40 DEG C Clock, obtains compression verification sample.
Hardness test is carried out to the sample for obtaining using the standard methods of ASTM D 2240-03, as a result as shown in Figure 1.
The hardness of polyurethane material rises with the increase of glycerol content as seen from Figure 1, when content reaches 15- When 20%, shore hardness D is up to 70 or so.
Embodiment 2
45 grams of the soybean oil polyol that hydroxyl value is 300 is taken, hydroxyl value is 1,937 4 grams of glycerine, add mixing in plastic beaker Uniformly, 49.7 grams of methyl diphenylene diisocyanate (MDI), stirring, mixing are added by degree of functionality mol ratio NCO/OH=1.05 Uniformly, that is, polyurethane resin is obtained.
To compound 756 grams of sandstone is added in polyurethane resin, mortar is obtained after being uniformly mixed.
During mortar is imported into a diameter of 10cm highly for 8 centimetres of circular die, both ends of the surface are respectively tapped 50 times through sampling machine Obtain prefabricated component.
Prefabricated component stands 20 hours at room temperature, obtains polyurethane concrete finished material.
With the compressive strength of the ASTMD 395-02 standard testings sample on universal tensile machine.Test result such as Fig. 2 and Shown in Fig. 3.
The compressive strength of polyurethane concrete composite rises with the increase of glycerol content as seen from Figure 2, Compressive strength reaches 60-80 MPas, reaches road with requiring.
As seen from Figure 3 the compressive strength of polyurethane concrete composite with the increase of compound gravel content on Rise, compressive strength reaches 40-90 MPas, reach road with requiring.
Embodiment 3
It is 1 gram of triethanolamine and trimethylolpropane 4 for 1128 by 45 grams of the soybean oil polyol that hydroxyl value is 280, hydroxyl value Gram liquid mixture, add in plastic beaker, add IPDI 44.6 grams of (IPDI), be sufficiently stirred for, make It is well mixed, and obtains polyurethane resin.
To 756 grams of compound sandstones are added in polyurethane resin, it is sufficiently stirred for, is allowed to well mixed, obtains mortar.
During mortar is imported into a diameter of 10cm highly for 8 centimetres of circular die, both ends of the surface are respectively tapped 50 times through sampling machine Obtain prefabricated component.
Prefabricated component is stood 10 hours at room temperature, polyurethane concrete finished material is obtained.
Stabilily parameter is carried out to finished product with the standards of ASTM D 1559, gained polyurethane cement sample stability is 65.3KN, flow valuve is 1.1mm, and with ASTMD 395-02 standard testings, the sample compression strength is on universal tensile machine 65.7MPa。

Claims (7)

1. bio-based polyurethane composite concrete material, it is characterised in that including following weight composition:
The ﹪ of polyurethane resin 10~30
Compound sandstone 70~90%
Particle diameter between 0~0.15mm is 12~26wt% in the compound sandstone, between 0.15~0.6mm for 14~ 27wt%, particle diameter between 0.6~1.18mm is 18~28wt%, particle diameter between 1.18~2.36mm for 12~ 29wt%, particle diameter between 2.36~4.75mm is 17~35wt%;
Wherein, the preparation method of the polyurethane resin is as follows:
Soy Polyol, polyisocyanates, crosslinking agent and accelerator are mixed, is stirred and is obtained polyurethane resin;
Wherein the mass content of soy Polyol is 30~60 ﹪;The mass content of crosslinking agent is 0~10 ﹪, polyisocyanates Content, with isocyanate groups mole to count, is the 100-120% of the oh group sum of soy Polyol and crosslinking agent;Urge The mass content of agent is 0.1~1 ﹪.
2. bio-based polyurethane composite concrete material according to claim 1, it is characterised in that the soy Polyol Hydroxy functionality is 3~4, and hydroxyl value is 100-450;
The polyisocyanates is selected from methyl diphenylene diisocyanate, toluene di-isocyanate(TDI), the isocyanide of poly- diphenyl methane two At least one in acid esters and IPDI;
It is at least one in triethylamine, dibutyl tin laurate and isooctyl acid bismuth that the accelerator is selected from;
The crosslinking agent is the polyalcohol of reactive functionality number >=3.
3. bio-based polyurethane composite concrete material according to claim 2, it is characterised in that the soy Polyol Hydroxyl value be 200-360.
4. bio-based polyurethane composite concrete material according to claim 3, it is characterised in that the polyisocyanates Content with isocyanate groups to count, be the 100-110% of the oh group sum of soy Polyol and the crosslinking agent.
5. bio-based polyurethane composite concrete material according to claim 4, it is characterised in that the crosslinking agent selection At least one in glycerine, pentaerythrite, triethanolamine and trimethylolpropane.
6. the application method of the bio-based polyurethane composite concrete material as described in claim 1 to 5 any claim, its It is characterised by comprising the steps:
To the compound sandstone is added in the polyurethane resin, mortar is uniformly mixing to obtain;
Mortar is poured into Marshall die trial, product is formed after hitting reality through Apparatus for Impacting at low-temp, curing reaction 10-1440 points at 0~40 DEG C Clock obtains sample;Or mortar is layered on road surface or bridge floor, through vibrated roller vibration compaction test, obtain polyurethane concrete paving Dress layer.
7. the application method of bio-based polyurethane composite concrete material according to claim 6, it is characterised in that described Product reacts 30~720 minutes at 5~40 DEG C.
CN201611206904.5A 2016-12-23 2016-12-23 Bio-based polyurethane composite concrete material and application method Pending CN106746916A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101117822A (en) * 2007-06-22 2008-02-06 林玲 Vegetable oil radical polyurethane composite panels and continuous production method
CN102140327A (en) * 2011-02-28 2011-08-03 中国科学院宁波材料技术与工程研究所 Storable plant oil-based polyurethane wood adhesive and preparation method and application thereof
CN103215006A (en) * 2013-03-19 2013-07-24 华南理工大学 Low viscosity solvent-free polyurethane laminating adhesive and preparation method thereof
CN104876474A (en) * 2015-04-22 2015-09-02 哈尔滨工程大学 Bridge deck slab waterborne polyurethane polymer concrete and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101117822A (en) * 2007-06-22 2008-02-06 林玲 Vegetable oil radical polyurethane composite panels and continuous production method
CN102140327A (en) * 2011-02-28 2011-08-03 中国科学院宁波材料技术与工程研究所 Storable plant oil-based polyurethane wood adhesive and preparation method and application thereof
CN103215006A (en) * 2013-03-19 2013-07-24 华南理工大学 Low viscosity solvent-free polyurethane laminating adhesive and preparation method thereof
CN104876474A (en) * 2015-04-22 2015-09-02 哈尔滨工程大学 Bridge deck slab waterborne polyurethane polymer concrete and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
刘益军: "《聚氨酯原料及助剂手册 第2版》", 31 January 2013 *

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