CN114891191A - Preparation method of unsaturated polyester resin for glass fiber reinforced plastic product - Google Patents
Preparation method of unsaturated polyester resin for glass fiber reinforced plastic product Download PDFInfo
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- CN114891191A CN114891191A CN202210741496.2A CN202210741496A CN114891191A CN 114891191 A CN114891191 A CN 114891191A CN 202210741496 A CN202210741496 A CN 202210741496A CN 114891191 A CN114891191 A CN 114891191A
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- China
- Prior art keywords
- polyester resin
- unsaturated polyester
- glass fiber
- fiber reinforced
- reinforced plastic
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Links
- 239000011152 fibreglass Substances 0.000 title claims abstract description 25
- 229920006337 unsaturated polyester resin Polymers 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000000178 monomer Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 150000007519 polyprotic acids Polymers 0.000 claims abstract description 5
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 5
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical group CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 claims description 4
- BTXXTMOWISPQSJ-UHFFFAOYSA-N 4,4,4-trifluorobutan-2-one Chemical compound CC(=O)CC(F)(F)F BTXXTMOWISPQSJ-UHFFFAOYSA-N 0.000 claims description 4
- BQACOLQNOUYJCE-FYZZASKESA-N Abietic acid Natural products CC(C)C1=CC2=CC[C@]3(C)[C@](C)(CCC[C@@]3(C)C(=O)O)[C@H]2CC1 BQACOLQNOUYJCE-FYZZASKESA-N 0.000 claims description 4
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- UICXTANXZJJIBC-UHFFFAOYSA-N 1-(1-hydroperoxycyclohexyl)peroxycyclohexan-1-ol Chemical compound C1CCCCC1(O)OOC1(OO)CCCCC1 UICXTANXZJJIBC-UHFFFAOYSA-N 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 229920000728 polyester Polymers 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/46—Polyesters chemically modified by esterification
- C08G63/50—Polyesters chemically modified by esterification by monohydric alcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
- C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
- C08F299/04—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
- C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
- C08F299/04—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyesters
- C08F299/0485—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polyesters from polyesters with side or terminal unsaturations
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/46—Polyesters chemically modified by esterification
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/46—Polyesters chemically modified by esterification
- C08G63/48—Polyesters chemically modified by esterification by unsaturated higher fatty oils or their acids; by resin acids
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
The invention discloses a preparation method of unsaturated polyester resin for glass fiber reinforced plastic products, which comprises the following specific steps: mixing polyalcohol and polybasic acid, adding into a reaction kettle, heating until the materials are dissolved and reacting for 1-3h to obtain a pre-solution; stirring and cooling, and adding monobasic acid or monobasic alcohol monomer or acetic anhydride; keeping the temperature for 4-8h, heating and keeping the temperature for 6-8h, adding a curing agent and an accelerant, and uniformly stirring; solidifying for 4-5h, cooling to room temperature, and taking out to obtain the unsaturated polyester resin. The invention solves the defects of poor heat resistance, low water resistance and poor weather resistance of the existing polyester coating in the using process.
Description
Technical Field
The invention relates to the technical field of glass fiber reinforced plastic, in particular to a preparation method of unsaturated polyester resin for glass fiber reinforced plastic products.
Background
Along with the continuous development of industry and agriculture in recent years, more and more glass fiber reinforced plastic boat construction enterprises are provided, the grade of glass fiber reinforced plastic boat products is continuously improved, and the products are mainly amusement boats, work boats, fishery boats and the like which meet the requirements of domestic tourism industry; the progress of the glass fiber reinforced plastic boat manufacturing industry is not beyond the development of the glass fiber reinforced plastic industry, and the process technology and the production of the original auxiliary materials are greatly developed, so that the development of the glass fiber reinforced plastic boat industry is greatly promoted; the raw material of the glass fiber reinforced plastic is unsaturated polyester resin.
The products in the prior art have the defects of poor heat resistance, low water resistance and poor weather resistance in the production process.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a preparation method of unsaturated polyester resin for glass fiber reinforced plastic products, and the production process solves the defects of poor heat resistance, low water resistance and poor weather resistance of the existing polyester coating in the using process.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a preparation method of unsaturated polyester resin for glass fiber reinforced plastic products comprises the following specific steps:
step 1: mixing polyalcohol and polybasic acid, adding into a reaction kettle, heating until the materials are dissolved and reacting for 1-3h to obtain a pre-solution;
step 2: stirring and cooling, and adding monobasic acid or monobasic alcohol monomer or acetic anhydride;
and step 3: keeping the temperature for 4-8h, heating and keeping the temperature for 6-8h, adding a curing agent and an accelerant, and uniformly stirring;
and 4, step 4: solidifying for 4-5h, cooling to room temperature, and taking out to obtain the unsaturated polyester resin.
As a further scheme of the present invention, in the step 1, the polyhydric alcohol and the polybasic acid are respectively dihydric alcohol and dibasic acid; the temperature of the reaction kettle is 170-180 ℃.
As a further scheme of the invention, the temperature for reducing the temperature of the reaction kettle in the step 2 is 125-135 ℃.
As a further embodiment of the present invention, the ratio of the pre-solution to the monobasic acid or the monobasic alcohol monomer or the acetic anhydride in the step 2 is 1: 0.5-0.6.
As a further aspect of the present invention, the monobasic acid is abietic acid; the monohydric alcohol monomer is cycloethanol or n-butanol.
As a further proposal of the invention, the temperature rise temperature of the step 3 is 180-200 ℃.
As a further embodiment of the invention, the ratio of the curing agent and the accelerator in the step 3 is 1: 1.
In a further embodiment of the present invention, the curing agent is methyl ethyl ketone peroxide or cyclohexanone peroxide paste.
As the technical scheme is adopted, the invention has the advantages and positive effects that: the invention has the advantages of low viscosity and higher elongation at break.
Detailed Description
Example 1
The invention relates to a preparation method of unsaturated polyester resin for glass fiber reinforced plastic products, which comprises the following steps:
step 1: mixing dihydric alcohol and dibasic acid, adding into a reaction kettle, heating to 170 ℃ to dissolve the materials, and reacting for 1h to obtain a pre-solution;
step 2: stirring and cooling to 125 ℃, adding the cyclic ethanol, wherein the ratio of the pre-solution to the cyclic ethanol is 1: 0.5;
and step 3: keeping the temperature for 4 hours, heating to 180 ℃ and keeping for 6 hours, adding the methyl ethyl ketone peroxide and the accelerant in a ratio of 1:1, and uniformly stirring;
and 4, step 4: solidifying for 4h, cooling to room temperature and taking out to obtain the unsaturated polyester resin.
Example 2
The invention relates to a preparation method of unsaturated polyester resin for glass fiber reinforced plastic products, which comprises the following steps:
step 1: mixing dihydric alcohol and dibasic acid, adding into a reaction kettle, heating to 175 ℃ to dissolve the materials for 2 hours to obtain a pre-solution;
step 2: stirring and cooling to 130 ℃, adding abietic acid, wherein the ratio of the pre-solution to the abietic acid is 1: 0.55;
and step 3: keeping the temperature for 6h, heating to 190 ℃ and keeping the temperature for 7h, adding methyl ethyl ketone peroxide and an accelerant in a ratio of 1:1, and uniformly stirring;
and 4, step 4: solidifying for 4.5h, cooling to room temperature and taking out to obtain the unsaturated polyester resin.
Example 3
A preparation method of unsaturated polyester resin for glass fiber reinforced plastic products is characterized by comprising the following steps: the method comprises the following specific steps:
step 1: mixing dihydric alcohol and dibasic acid, adding into a reaction kettle, heating to 180 ℃ to dissolve the materials, and reacting for 3 hours to obtain a pre-solution;
step 2: stirring and cooling to 135 ℃, adding acetic anhydride, wherein the ratio of the pre-solution to the acetic anhydride is 1: 0.6;
and step 3: keeping the temperature for 8h, heating and keeping the temperature for 8h, adding cyclohexanone peroxide paste and the accelerator in a ratio of 1:1, and uniformly stirring;
and 4, step 4: solidifying for 5h, cooling to room temperature and taking out to obtain the unsaturated polyester resin.
Table 1 shows the performance data of examples 1-3
| Example 1 | Example 2 | Example 3 | |
| Flexural Strength (MPa) | 295 | 301 | 306 |
| Flexural modulus of elasticity (MPa) | 1.31×10 4 | 1.38×10 4 | 1.41×10 4 |
As can be seen from table 1, the glass fiber reinforced plastic product of the present invention has low viscosity and high elongation at break as described above.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many variations or modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.
Claims (8)
1. A preparation method of unsaturated polyester resin for glass fiber reinforced plastic products is characterized by comprising the following steps: the method comprises the following specific steps:
step 1: mixing polyalcohol and polybasic acid, adding into a reaction kettle, heating until the materials are dissolved and reacting for 1-3h to obtain a pre-solution;
step 2: stirring and cooling, and adding monobasic acid or monobasic alcohol monomer or acetic anhydride;
and step 3: keeping the temperature for 4-8h, heating and keeping the temperature for 6-8h, adding a curing agent and an accelerant, and uniformly stirring;
and 4, step 4: solidifying for 4-5h, cooling to room temperature, and taking out to obtain the unsaturated polyester resin.
2. The method for preparing unsaturated polyester resin for glass fiber reinforced plastic products as claimed in claim 1, wherein the method comprises the following steps: in the step 1, the polyhydric alcohol and the polybasic acid are respectively dihydric alcohol and dibasic acid; the temperature of the reaction kettle is 170-180 ℃.
3. The method for preparing unsaturated polyester resin for glass fiber reinforced plastic products as claimed in claim 1, wherein the method comprises the following steps: the temperature for reducing the temperature of the reaction kettle in the step 2 is 125-135 ℃.
4. The method for preparing unsaturated polyester resin for glass fiber reinforced plastic products as claimed in claim 1, wherein the method comprises the following steps: the ratio of the pre-solution to the monoacid or the monohydric alcohol monomer or the acetic anhydride in the step 2 is 1: 0.5-0.6.
5. The method for preparing unsaturated polyester resin for glass fiber reinforced plastic products as claimed in claim 4, wherein the method comprises the following steps: the monoacid is abietic acid; the monohydric alcohol monomer is cycloethanol or n-butanol.
6. The method for preparing unsaturated polyester resin for glass fiber reinforced plastic products as claimed in claim 1, wherein the method comprises the following steps: the temperature rise temperature in the step 3 is 180-200 ℃.
7. The method for preparing unsaturated polyester resin for glass fiber reinforced plastic products as claimed in claim 1, wherein the method comprises the following steps: the ratio of the curing agent to the accelerator in the step 3 is 1: 1.
8. The method for preparing unsaturated polyester resin for glass fiber reinforced plastic products as claimed in claim 6, wherein the method comprises the following steps: the curing agent is methyl ethyl ketone peroxide or cyclohexanone peroxide paste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210741496.2A CN114891191A (en) | 2022-06-27 | 2022-06-27 | Preparation method of unsaturated polyester resin for glass fiber reinforced plastic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210741496.2A CN114891191A (en) | 2022-06-27 | 2022-06-27 | Preparation method of unsaturated polyester resin for glass fiber reinforced plastic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114891191A true CN114891191A (en) | 2022-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210741496.2A Pending CN114891191A (en) | 2022-06-27 | 2022-06-27 | Preparation method of unsaturated polyester resin for glass fiber reinforced plastic product |
Country Status (1)
| Country | Link |
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| CN (1) | CN114891191A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102558453A (en) * | 2011-11-15 | 2012-07-11 | 湖州红剑聚合物有限公司 | Mono-acid blocked unsaturated polyester resin and preparation method for same |
| CN108948338A (en) * | 2018-06-07 | 2018-12-07 | 嘉善东大树脂有限公司 | A kind of terminated unsaturated polyester resin and its synthesis technology |
| WO2021097757A1 (en) * | 2019-11-21 | 2021-05-27 | 擎天材料科技有限公司 | Polyester resin composition, preparation method therefor and application thereof |
-
2022
- 2022-06-27 CN CN202210741496.2A patent/CN114891191A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102558453A (en) * | 2011-11-15 | 2012-07-11 | 湖州红剑聚合物有限公司 | Mono-acid blocked unsaturated polyester resin and preparation method for same |
| CN108948338A (en) * | 2018-06-07 | 2018-12-07 | 嘉善东大树脂有限公司 | A kind of terminated unsaturated polyester resin and its synthesis technology |
| WO2021097757A1 (en) * | 2019-11-21 | 2021-05-27 | 擎天材料科技有限公司 | Polyester resin composition, preparation method therefor and application thereof |
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