CN109096700B - Moisture-proof flame-retardant epoxy resin composition for ground - Google Patents
Moisture-proof flame-retardant epoxy resin composition for ground Download PDFInfo
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- CN109096700B CN109096700B CN201810863840.9A CN201810863840A CN109096700B CN 109096700 B CN109096700 B CN 109096700B CN 201810863840 A CN201810863840 A CN 201810863840A CN 109096700 B CN109096700 B CN 109096700B
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- epoxy resin
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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
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention provides a moisture-proof flame-retardant epoxy resin composition for a floor, which comprises the following components in parts by weight: 100 parts of epoxy resin, 10-20 parts of curing agent, 50-70 parts of filler, 20-30 parts of lignin fiber, 10-20 parts of PET and 1-5 parts of auxiliary agent. The epoxy resin composition has excellent moisture-proof and flame-retardant properties, and overcomes the defect that epoxy resin materials are not suitable for ground construction.
Description
Technical Field
The invention belongs to the field of high polymer materials, relates to an epoxy resin composition, and particularly relates to a moisture-proof flame-retardant epoxy resin composition for ground.
Background
Epoxy resin is an important thermosetting resin, is the most widely applied matrix resin in polymer composite materials, epoxy resin condensate has the advantages of excellent bonding performance, wear resistance, mechanical performance, electrical insulation performance, chemical stability, high and low temperature resistance, low shrinkage rate, easy processing and forming, low cost and the like, and can be widely applied in the fields of adhesives, electronic instruments, light industry, construction, machinery, aerospace, coatings, electronic and electrical insulation materials, advanced composite materials and the like, common epoxy resin mainly has 2 types, one is bisphenol A glycidyl ether type epoxy resin which is generally called bisphenol A epoxy resin and accounts for 90 percent of the total output of the epoxy resin and can be obtained by polymerizing 2, 2-bis-p-hydroxyphenyl propane (bisphenol A) and epoxy chloropropane in the presence of alkali; the other is high functionality epoxy resin (with more than 2 epoxy groups in the molecule), which can be obtained by polymerizing novolac resin and epichlorohydrin, or by condensing 4,4 '-diaminodiphenylmethane or 4, 4' -diaminodiphenyl ether and epichlorohydrin.
The epoxy resin applied to the ground material has the defects of high water absorption rate, poor high temperature resistance and the like, and in order to solve the problems, a waterproof heat-insulating layer is additionally covered on the surface of the paved epoxy resin composition mostly in the prior art, so that the purpose of separating the epoxy resin material from water vapor is achieved, the construction difficulty is improved, and the cost for paving the epoxy resin ground material is also improved, so that the existing epoxy resin material needs to be improved, and the water resistance and the high temperature resistance of the epoxy resin composition are fundamentally improved.
Disclosure of Invention
Aiming at solving the problems in the prior art, the invention provides a moisture-proof flame-retardant epoxy resin composition for ground, which has excellent moisture-proof flame-retardant property and overcomes the defect that an epoxy resin material is not suitable for ground construction.
The invention provides a moisture-proof flame-retardant epoxy resin composition for a floor, which comprises the following components in parts by weight:
further, the composition of the epoxy resin composition comprises the following components in parts by weight:
further, the composition of the epoxy resin composition comprises the following components in parts by weight:
in the invention, the number average molecular weight of the epoxy resin is 3000-5000. The epoxy resin used in the present invention is mainly bisphenol a type epoxy resin.
The curing agent used in the invention is an epoxy resin curing agent, such as dicyandiamide, methyl tetrahydrophthalic anhydride, diethylenetriamine or imidazole curing agent and the like.
In the invention, the filler is any one or a combination of at least two of calcium carbonate, silicon dioxide or aluminum hydroxide. The filler may be a composition obtained by mixing the above fillers in any ratio.
In the invention, the diameter of the lignin fiber is 10-20 μm, and the length of the lignin fiber is 100-150 μm.
Because the epoxy resin has higher water absorption, the ground material has high requirement on water resistance, and because the popularization degree of terrestrial heat is higher and higher in household use, the requirements on fire resistance and heat resistance of the ground material are also improved. Therefore, the lignin fiber is added into the material, and the lignin fiber has a large number of benzene ring structures, has excellent water resistance and can improve the mechanical properties of the material. The compatibility between the epoxy resin and the lignin fiber is poor, and the flame retardant performance of the epoxy resin and the lignin fiber is common. In the invention, PET is added as an auxiliary agent, so that the PET not only enables the epoxy resin to be more stable, but also greatly improves the flame retardant property of the composition.
In the invention, the number average molecular weight of the PET is 18000-20000.
In the present invention, the auxiliary agent includes an antioxidant and a defoaming agent.
The antioxidant used in the present invention is an antioxidant commonly used in the art, such as antioxidant 1010, antioxidant 168 or antioxidant 1076. The defoaming agent used in the present invention is a defoaming agent commonly used in the art, such as a silicone defoaming agent or a polyether defoaming agent, and the like.
In the invention, the auxiliary agent comprises 0.5-3 parts by mass of an oxidant and 0.5-2 parts by mass of a defoaming agent.
Compared with the prior art, the invention has at least the following beneficial effects:
the moisture-proof flame-retardant epoxy resin composition for the ground has excellent compressive strength, the antioxidant strength can reach 24.7MPa, the moisture resistance is excellent, after moisture resistance test, the compressive strength is reduced by less than 5%, the weight change rate is less than 1%, and the flame retardant property UL-94 can reach the V-0 level.
Detailed Description
For the purpose of facilitating an understanding of the present invention, the present invention will now be described by way of examples. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
The moisture-proof flame-retardant epoxy resin composition for the ground provided by the specific embodiment of the invention is prepared by adopting the following preparation method: mixing the epoxy resin and the curing agent in parts by weight of the formula for 30min under the mechanical stirring of 500-1000 rpm, adding the filler and the lignin fiber, mixing for 15min under the mechanical stirring of 500-1000 rpm, adding the PET, mixing for 15min under the mechanical stirring of 1500-2000 rpm, and finally adding the antioxidant and the defoaming agent, and mixing for 20min under 500-800 rpm to obtain the epoxy resin composition.
Example 1
This example provides a moisture-proof and flame-retardant epoxy resin composition for flooring, which comprises the following components in parts by weight:
example 2
This example provides a moisture-proof and flame-retardant epoxy resin composition for flooring, which comprises the following components in parts by weight:
example 3
This example provides a moisture-proof and flame-retardant epoxy resin composition for flooring, which comprises the following components in parts by weight:
example 4
This example provides a moisture-proof and flame-retardant epoxy resin composition for flooring, which comprises the following components in parts by weight:
example 5
This example provides a moisture-proof and flame-retardant epoxy resin composition for flooring, which comprises the following components in parts by weight:
the bisphenol A epoxy resin used in the embodiments 1 to 5 of the present invention has a number average molecular weight of 3000 to 5000, a diameter of 10 to 20 μm and a length of 100 to 150 μm of a lignin fiber, and a number average molecular weight of PET of 18000 to 20000.
Comparative example 1
In this comparative example, the conditions were the same as in example 5 except that no lignocellulosic fiber was added.
Comparative example 2
In this comparative example, the conditions were the same as in example 5 except that PET was not added.
Comparative example 3
In this comparative example, the conditions were the same as in example 5 except that PET and lignocellulose were not added.
Comparative example 4
In this comparative example, the conditions were the same as those in example 5 except that the diameter of the lignocellulose was 5 to 8 μm and the length was 50 to 80 μm.
Comparative example 5
In this comparative example, the conditions were the same as those in example 5 except that the diameter of the lignocellulose was 30 to 50 μm and the length was 200 to 300. mu.m.
The moisture resistance, flame retardancy and compressive strength of examples 1 to 5 and comparative examples 1 to 5 were measured, and the results are shown in table 1.
The method for testing the moisture resistance comprises the following steps: samples of the epoxy resin composition were placed at 85 ℃ and 85% humidity for 48h and tested for weight change and compressive strength change.
TABLE 1
As can be seen from the test results in Table 1, the epoxy resin compositions provided in examples 1 to 5 of the present invention have excellent compressive strength, an antioxidant strength of 24.7MPa, and excellent moisture resistance, and after moisture resistance testing, the compressive strength is reduced by less than 5%, the weight change rate is less than 1%, and the flame retardant property UL-94 can reach a V-0 level. Comparative example 1, no lignocellulose, comparative example 2, PET, and comparative example 3, no PET and lignocellulose, resulted in an overall decrease in compressive strength, moisture resistance, and flame retardancy as compared to example 5. The lignocellulose used in comparative example 4 and comparative example 5 exceeded the specified specifications, resulting in a decrease in the compressive strength of comparative example 4 and a decrease in the flame retardancy of comparative example 5, compared to example 5.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (7)
1. The moisture-proof flame-retardant epoxy resin composition for the ground is characterized by comprising the following components in parts by weight:
the number average molecular weight of the PET is 18000-20000;
the diameter of the lignin fiber is 10-20 mu m, and the length of the lignin fiber is 100-150 mu m.
2. The epoxy resin composition according to claim 1, wherein the composition of the epoxy resin composition comprises, in parts by weight:
3. the epoxy resin composition according to claim 2, wherein the composition of the epoxy resin composition comprises, in parts by weight:
4. the epoxy resin composition according to claim 1, wherein the number average molecular weight of the epoxy resin is 3000 to 5000.
5. The epoxy resin composition of claim 1, wherein the filler is any one of calcium carbonate, silica, or aluminum hydroxide, or a combination of at least two thereof.
6. The epoxy resin composition of claim 1, wherein the coagent comprises an oxidizer and an anti-foaming agent.
7. The epoxy resin composition according to claim 6, wherein the auxiliary comprises 0.5 to 3 parts by mass of an oxidizing agent and 0.5 to 2 parts by mass of an antifoaming agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810863840.9A CN109096700B (en) | 2018-08-01 | 2018-08-01 | Moisture-proof flame-retardant epoxy resin composition for ground |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810863840.9A CN109096700B (en) | 2018-08-01 | 2018-08-01 | Moisture-proof flame-retardant epoxy resin composition for ground |
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| Publication Number | Publication Date |
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| CN109096700A CN109096700A (en) | 2018-12-28 |
| CN109096700B true CN109096700B (en) | 2021-10-01 |
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| CN201810863840.9A Active CN109096700B (en) | 2018-08-01 | 2018-08-01 | Moisture-proof flame-retardant epoxy resin composition for ground |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011099544A1 (en) * | 2010-02-10 | 2011-08-18 | 日立化成工業株式会社 | Resin composition, molded body and composite molded body |
| CN102585531A (en) * | 2011-12-14 | 2012-07-18 | 东北林业大学 | Lignin-epoxy resin composite material and preparation method thereof |
| CN103450636B (en) * | 2013-08-20 | 2016-06-08 | 中国科学院宁波材料技术与工程研究所 | A kind of fire-retardant epoxy resin/lignin/organoscomposite composite material and preparation method thereof |
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