CN116751344B - Reinforcing agent for acrylic plate, preparation method of reinforcing agent and acrylic plate assembling method - Google Patents
Reinforcing agent for acrylic plate, preparation method of reinforcing agent and acrylic plate assembling method Download PDFInfo
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- CN116751344B CN116751344B CN202311041858.8A CN202311041858A CN116751344B CN 116751344 B CN116751344 B CN 116751344B CN 202311041858 A CN202311041858 A CN 202311041858A CN 116751344 B CN116751344 B CN 116751344B
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- polyurethane elastomer
- reinforcing agent
- acrylic plate
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000012744 reinforcing agent Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 58
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 19
- HWSSEYVMGDIFMH-UHFFFAOYSA-N 2-[2-[2-(2-methylprop-2-enoyloxy)ethoxy]ethoxy]ethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCOCCOCCOC(=O)C(C)=C HWSSEYVMGDIFMH-UHFFFAOYSA-N 0.000 claims abstract description 17
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000005058 Isophorone diisocyanate Substances 0.000 claims abstract description 12
- -1 triphenyl hexafluoroantimonate Chemical compound 0.000 claims abstract description 11
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims abstract description 7
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 7
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000012975 dibutyltin dilaurate Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 40
- 238000006243 chemical reaction Methods 0.000 claims description 17
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims description 8
- 239000004970 Chain extender Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 2
- 238000007789 sealing Methods 0.000 description 8
- 229920000295 expanded polytetrafluoroethylene Polymers 0.000 description 7
- 239000002184 metal Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 238000000016 photochemical curing Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012496 blank sample Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- PYBNTRWJKQJDRE-UHFFFAOYSA-L dodecanoate;tin(2+) Chemical compound [Sn+2].CCCCCCCCCCCC([O-])=O.CCCCCCCCCCCC([O-])=O PYBNTRWJKQJDRE-UHFFFAOYSA-L 0.000 description 1
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Chemical compound CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000004334 fluoridation Methods 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
- C08F283/008—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00 on to unsaturated polymers
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/006—Presence of (meth)acrylic polymer in the substrate
Abstract
The invention discloses a reinforcing agent for an acrylic plate, a preparation method thereof and an acrylic plate assembling method, and belongs to the technical field of reinforcing agents, wherein the reinforcing agent comprises 40-50 parts of isophorone diisocyanate, 40-50 parts of triethylene glycol dimethacrylate, 4-6 parts of triphenyl hexafluoroantimonate and 16-20 parts of fluorinated polyurethane elastomer micro powder; the fluorinated polyurethane elastomer micro powder is prepared from 30-40 parts of fluorinated aliphatic diisocyanate, 20-30 parts of perfluorinated aromatic diisocyanate, 20-30 parts of fluorinated aromatic diisocyanate, 100-120 parts of propylene glycol, 3-5 parts of dibutyltin dilaurate catalyst, 8-10 parts of dimethylolpropionic acid and 1-3 parts of trimethylolpropane as a crosslinking agent. The reinforcing agent prepared by the invention can enable the acrylic plate to be normally used under the condition that the acrylic plate is more than 10N.m, and has better practicability.
Description
Technical Field
The invention belongs to the technical field of reinforcing agents, and particularly relates to a reinforcing agent for an acrylic plate, a preparation method of the reinforcing agent and an acrylic plate assembling method.
Background
Expanded polytetrafluoroethylene, namely ePTFE, commonly known as "plastic king", is widely applied, and is applied to the sealing part of a flap in the current aviation field, namely, the expanded polytetrafluoroethylene has good sealing performance, so that the flying safety of a spacecraft is ensured, and the performance and quality requirements of an aerospace sealing element are extremely high, otherwise, serious accidents are caused.
The current detection device for the sealing performance of the expanded polytetrafluoroethylene is generally of a box section structure and comprises a metal cavity, a die-cutting piece made of expanded polytetrafluoroethylene material is placed at the bottom of the metal cavity, then an acrylic plate is connected through a fastening bolt, the expanded polytetrafluoroethylene die-cutting piece is fixed, and oil or water (with dye for tracing) is filled in the box section during installation. The integral strength of the acrylic plate is one of important factors for guaranteeing tightness detection, and the existing acrylic plate is obtained by assembling multiple layers of plate layers. However, in the sealing detection process, when the torque at the time of sealing is larger than 5N.m, there is a problem that the acrylic plate is easy to crack.
Disclosure of Invention
The invention aims to provide a reinforcing agent for an acrylic plate, a preparation method thereof and an acrylic plate assembling method, and aims to solve the problems.
The invention is realized mainly by the following technical scheme:
the reinforcing agent for the acrylic plate is prepared from the following raw materials in parts by weight: 40-50 parts of isophorone diisocyanate, 40-50 parts of triethylene glycol dimethacrylate, 4-6 parts of triphenyl hexafluoroantimonate and 16-20 parts of fluorinated polyurethane elastomer micropowder; the fluorinated polyurethane elastomer micro powder is prepared from the fluorinated polyurethane elastomer, and the fluorinated polyurethane elastomer is prepared from the following raw materials in parts by weight: 30-40 parts of fluorinated aliphatic diisocyanate, 20-30 parts of perfluorinated aromatic diisocyanate, 20-30 parts of fluorinated aromatic diisocyanate, 100-120 parts of propylene glycol, 3-5 parts of dibutyltin dilaurate catalyst, 8-10 parts of dimethylolpropionic acid and 1-3 parts of trimethylolpropane as a crosslinking agent.
In order to better realize the invention, the reinforcing agent is further prepared from the following raw materials in parts by weight: 43 parts of isophorone diisocyanate, 47 parts of triethylene glycol dimethacrylate, 4 parts of triphenyl hexafluoroantimonate and 17 parts of fluorinated polyurethane elastomer micro powder.
In order to better realize the invention, the reinforcing agent is further prepared from the following raw materials in parts by weight: 48 parts of isophorone diisocyanate, 43 parts of triethylene glycol dimethacrylate, 5 parts of triphenyl hexafluoroantimonate and 19 parts of fluorinated polyurethane elastomer micro powder.
In order to better realize the invention, the fluorinated polyurethane elastomer is further prepared from the following raw materials in parts by weight: 34 parts of fluorinated aliphatic diisocyanate, 23 parts of perfluorinated aromatic diisocyanate, 24 parts of fluorinated aromatic diisocyanate and 108 parts of propylene glycol.
In order to better realize the invention, the fluorinated polyurethane elastomer is further prepared from the following raw materials in parts by weight: 36 parts of fluorinated aliphatic diisocyanate, 28 parts of perfluorinated aromatic diisocyanate, 26 parts of fluorinated aromatic diisocyanate and 118 parts of propylene glycol.
The invention is realized mainly by the following technical scheme:
the preparation method of the reinforcing agent for the acrylic plate comprises the steps of adding isophorone diisocyanate, triethylene glycol dimethacrylate, triphenyl hexafluoroantimonate and fluorinated polyurethane elastomer micro powder into a dark stirrer for stirring, wherein the stirring time is as follows: 8-12min, stirring rotation speed is: 400-450r/min to obtain an acrylic plate reinforcing agent, and placing the acrylic plate reinforcing agent into a brown bottle for preservation; the fluorinated polyurethane elastomer micro powder is prepared from a fluorinated polyurethane elastomer.
In order to better realize the invention, further, the preparation method of the fluorinated polyurethane elastomer micropowder comprises the following steps: placing the fluorinated polyurethane elastomer into a low-temperature environment of-70 ℃ to-60 ℃ for 22-24 hours to embrittle the fluorinated polyurethane elastomer, and stirring the fluorinated polyurethane elastomer through mechanical stress to obtain the fluorinated polyurethane elastomer micro powder with the particle size of 1-10 mu m.
In order to better realize the invention, further, the preparation method of the fluorinated polyurethane elastomer comprises the following steps:
step S1: starting the reaction kettle to stir at the stirring speed of 400-600r/min; then, adding fluorinated aliphatic diisocyanate, perfluorinated aromatic diisocyanate and fluorinated aromatic diisocyanate into a reaction kettle, and adding propylene glycol as a chain extender; introducing nitrogen, and stirring at 70-80 ℃ for reaction for 3h;
step S2: adding 40-50 parts by weight of acetone solvent, and continuing stirring for 20-25min at a stirring speed of 400-600r/min;
step S3: adding a dibutyltin dilaurate catalyst, dimethylol propionic acid and trimethylolpropane as a crosslinking agent to react for 4 hours to prepare a polyurethane prepolymer;
step S4: finally, adding triethylene glycol dimethacrylate into the polyurethane prepolymer, rapidly stirring for 5min, and distilling acetone under reduced pressure after 20min to prepare the fluorinated polyurethane elastomer.
The invention is realized mainly by the following technical scheme:
the acrylic plate assembling method is characterized in that the acrylic plate is cleaned and dried by adopting the reinforcing agent, then the acrylic plate is assembled, a hollow gap of 0.2mm is kept between adjacent acrylic plates, the reinforcing agent is filled in, uv curing is carried out, and illumination is carried out for 10min.
In order to better realize the invention, the prepared acrylic plate is normally used under the condition that the torque is more than 10 N.m.
The reaction principle of the invention is as follows:
IPDI trimer is obtained from the self-polymerization of isophorone diisocyanate (IPDI) as an initiator for polyurethane. Triethylene glycol dimethacrylate is used as a reactive diluent of a main component of a photocuring system; triphenylhexafluoroantimonate as photoinitiator; and then stirring the mixture with fluorinated polyurethane elastomer micropowder (filler and flexibilizer) to obtain a photocuring fluorinated polyurethane system, namely the acrylic plate reinforcing agent. The chemical reaction formula is as follows:
wherein X represents a non-methacrylic acid ester systemIs of the formula (I);
the synthesis principle of the fluorinated polyurethane elastomer is as follows:
wherein R represents a fluorinated aliphatic structural formula,
r' represents a perfluorinated aromatic structural formula,
r' represents a fluorinated aromatic structural formula.
The invention has the beneficial effects that:
(1) According to the invention, the triethylene glycol dimethacrylate is initiated by a double initiator system, so that the stable and controllable reaction peak in the reaction process is ensured, and the molecular weight of the produced polyethylene glycol dimethacrylate is more uniform;
(2) According to the invention, the high temperature resistance of the fluorinated polyurethane elastomer is improved through a fluoridation reaction;
(3) According to the invention, through the addition of the fluorinated polyurethane elastomer, the impact resistance and toughness of the reinforcing agent are increased, and meanwhile, the temperature resistance and weather resistance of the reinforcing agent can be improved through fluorination, the impact resistance of the acrylic plate is improved, cracking is prevented, and the practicability is better;
(4) The acrylic plate prepared by the invention can be normally used under the condition of more than 10N.m (under the condition of large torque), solves the problem that the acrylic plate with the thickness of more than 5N.m Shi Ya is easy to crack during sealing, and has better practicability.
Detailed Description
Example 1:
43 parts of isophorone diisocyanate, 47 parts of triethylene glycol dimethacrylate, 4 parts of triphenyl hexafluoroantimonate and 17 parts of fluorinated polyurethane elastomer micropowder are added into a dark stirrer for stirring according to parts by weight, wherein the stirring time is as follows: 9min, stirring rotation speed is: 410r/min to obtain the acrylic plate reinforcing agent, and placing the acrylic plate reinforcing agent into a brown bottle for preservation.
The preparation method of the fluorinated polyurethane elastomer micro powder comprises the following steps: placing the fluorinated polyurethane elastomer into a low-temperature environment of-68 ℃ for 22 hours, embrittling the fluorinated polyurethane elastomer, and stirring the fluorinated polyurethane elastomer through mechanical stress to obtain the fluorinated polyurethane elastomer micro powder with the particle size of 1-10 mu m.
Preferably, the fluorinated polyurethane elastomer is synthesized by: starting the reaction kettle to stir at the stirring speed of 450r/min; then, 34 parts of fluorinated aliphatic diisocyanate, 23 parts of perfluorinated aromatic diisocyanate and 24 parts of fluorinated aromatic diisocyanate are added into a reaction kettle according to parts by weight, and 108 parts of propylene glycol is added as a chain extender; introducing nitrogen, and stirring at 72 ℃ for reaction for 3 hours; adding 42 parts of acetone solvent, and continuously stirring for 21min at the stirring speed of 480r/min; adding 3-5 parts of dibutyl tin dilaurate catalyst, 8-10 parts of dimethylolpropionic acid and 1-3 parts of trimethylolpropane as a crosslinking agent to react for 4 hours to prepare a polyurethane prepolymer; finally, adding triethylene glycol dimethacrylate into the polyurethane prepolymer, rapidly stirring for 5min, and distilling acetone under reduced pressure after 20min to obtain the fluorinated polyurethane elastomer.
Example 2:
48 parts of isophorone diisocyanate, 43 parts of triethylene glycol dimethacrylate, 5 parts of triphenyl hexafluoroantimonate and 19 parts of fluorinated polyurethane elastomer micropowder are added into a dark stirrer for stirring according to parts by weight, wherein the stirring time is as follows: 11min, stirring rotation speed is: 403r/min to obtain the acrylic plate reinforcing agent, and placing the acrylic plate reinforcing agent into a brown bottle for preservation.
The preparation method of the fluorinated polyurethane elastomer micro powder comprises the following steps: placing the fluorinated polyurethane elastomer in a low-temperature environment of minus 62 ℃ for 23 hours, embrittling the fluorinated polyurethane elastomer, and stirring the fluorinated polyurethane elastomer through mechanical stress to obtain fluorinated polyurethane elastomer micro powder with the particle size of 1-10 mu m;
preferably, the fluorinated polyurethane elastomer is synthesized by: starting the reaction kettle to stir at the stirring speed of 530r/min; then, adding 36 parts of fluorinated aliphatic diisocyanate, 28 parts of perfluorinated aromatic diisocyanate and 26 parts of fluorinated aromatic diisocyanate into a reaction kettle according to parts by weight, and adding 118 parts of propylene glycol as a chain extender; introducing nitrogen, and stirring at 77 ℃ for reaction for 3 hours; adding 47 parts of acetone solvent, and continuously stirring for 24min at a stirring speed of 530r/min; adding 3-5 parts of dibutyl 3 tin dilaurate catalyst, 8-10 parts of dimethylolpropionic acid and 1-3 parts of trimethylolpropane as a crosslinking agent to react for 4 hours to prepare a polyurethane prepolymer; finally, adding triethylene glycol dimethacrylate into the polyurethane prepolymer, rapidly stirring for 5min, and distilling acetone under reduced pressure after 20min to obtain the fluorinated polyurethane elastomer.
The maximum torque of the sheet cracking was measured by using the test example 1, the test example 2 and a blank sample (pure acrylic sheet) for installability test. As shown in Table 1, the acrylic plate prepared by the invention can be normally used under the condition of more than 10N.m (under the condition of large torque), and the problem that the acrylic plate is easy to crack when being sealed is solved, wherein the size of the acrylic plate is more than 5N.m Shi Ya.
TABLE 1
Example 3:
the acrylic plate assembling method is characterized in that the acrylic plate is cleaned by adopting the reinforcing agent, then assembled, a gap of 0.2mm is kept, the acrylic plate reinforcing agent is used for filling a mold, uv curing is carried out, and cutting is carried out after 10min of illumination so as to carry out subsequent use.
In the process of detecting the tightness of the expanded polytetrafluoroethylene, the acrylic plate is cut into the size identical to the bottom size of the metal box section, holes are drilled at intervals of 30mm, and the acrylic plate and the bottom of the metal box section are fixed by using M6 bolts. The acrylic plate prepared by the method can be normally used under the condition of more than 10N.m (under the condition of large torque), and the problem that the acrylic plate with the thickness of more than 5N.m Shi Ya is easy to crack during sealing is solved.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.
Claims (9)
1. The reinforcing agent for the acrylic plate is characterized by being prepared from the following raw materials in parts by weight: 40-50 parts of isophorone diisocyanate, 40-50 parts of triethylene glycol dimethacrylate, 4-6 parts of triphenyl hexafluoroantimonate and 16-20 parts of fluorinated polyurethane elastomer micropowder; the fluorinated polyurethane elastomer micro powder is prepared from the fluorinated polyurethane elastomer, and the fluorinated polyurethane elastomer is prepared from the following raw materials in parts by weight: 30-40 parts of fluorinated aliphatic diisocyanate, 20-30 parts of perfluorinated aromatic diisocyanate, 20-30 parts of fluorinated aromatic diisocyanate, 100-120 parts of propylene glycol, 3-5 parts of dibutyltin dilaurate catalyst, 8-10 parts of dimethylolpropionic acid and 1-3 parts of trimethylolpropane as a crosslinking agent.
2. The reinforcing agent for an acrylic plate according to claim 1, wherein the reinforcing agent is prepared from the following raw materials in parts by weight: 43 parts of isophorone diisocyanate, 47 parts of triethylene glycol dimethacrylate, 4 parts of triphenyl hexafluoroantimonate and 17 parts of fluorinated polyurethane elastomer micro powder.
3. The reinforcing agent for an acrylic plate according to claim 1, wherein the reinforcing agent is prepared from the following raw materials in parts by weight: 48 parts of isophorone diisocyanate, 43 parts of triethylene glycol dimethacrylate, 5 parts of triphenyl hexafluoroantimonate and 19 parts of fluorinated polyurethane elastomer micro powder.
4. A reinforcing agent for acrylic sheets according to any one of claims 1 to 3, wherein the fluorinated polyurethane elastomer is prepared from the following raw materials in parts by weight: 34 parts of fluorinated aliphatic diisocyanate, 23 parts of perfluorinated aromatic diisocyanate, 24 parts of fluorinated aromatic diisocyanate and 108 parts of propylene glycol.
5. A reinforcing agent for acrylic sheets according to any one of claims 1 to 3, wherein the fluorinated polyurethane elastomer is prepared from the following raw materials in parts by weight: 36 parts of fluorinated aliphatic diisocyanate, 28 parts of perfluorinated aromatic diisocyanate, 26 parts of fluorinated aromatic diisocyanate and 118 parts of propylene glycol.
6. A method for preparing the reinforcing agent for an acrylic plate, which is used for preparing the reinforcing agent according to any one of claims 1 to 5, and is characterized in that isophorone diisocyanate, triethylene glycol dimethacrylate, triphenyl hexafluoroantimonate and fluorinated polyurethane elastomer micro powder are added into a dark stirrer for stirring for the following time: 8-12min, stirring rotation speed is: 400-450r/min to obtain an acrylic plate reinforcing agent, and placing the acrylic plate reinforcing agent into a brown bottle for preservation; the fluorinated polyurethane elastomer micro powder is prepared from a fluorinated polyurethane elastomer.
7. The method for producing an acrylic sheet reinforcing agent according to claim 6, wherein the method for producing the fluorinated polyurethane elastomer fine powder comprises: placing the fluorinated polyurethane elastomer into a low-temperature environment of-70 ℃ to-60 ℃ for 22-24 hours to embrittle the fluorinated polyurethane elastomer, and stirring the fluorinated polyurethane elastomer through mechanical stress to obtain the fluorinated polyurethane elastomer micro powder with the particle size of 1-10 mu m.
8. The method for preparing the reinforcing agent for acrylic sheet according to claim 6 or 7, wherein the method for preparing the fluorinated polyurethane elastomer comprises the steps of:
step S1: starting the reaction kettle to stir at the stirring speed of 400-600r/min; then, adding fluorinated aliphatic diisocyanate, perfluorinated aromatic diisocyanate and fluorinated aromatic diisocyanate into a reaction kettle, and adding propylene glycol as a chain extender; introducing nitrogen, and stirring at 70-80 ℃ for reaction for 3h;
step S2: adding 40-50 parts by weight of acetone solvent, and continuing stirring for 20-25min at a stirring speed of 400-600r/min;
step S3: adding a dibutyltin dilaurate catalyst, dimethylol propionic acid and trimethylolpropane as a crosslinking agent to react for 4 hours to prepare a polyurethane prepolymer;
step S4: finally, adding triethylene glycol dimethacrylate into the polyurethane prepolymer, rapidly stirring for 5min, and distilling acetone under reduced pressure after 20min to prepare the fluorinated polyurethane elastomer.
9. An acrylic plate assembling method using the reinforcing agent according to any one of claims 1-5, wherein the acrylic plates are cleaned and dried, then the acrylic plates are assembled, a gap of 0.2mm is kept between adjacent acrylic plates, and the reinforcing agent is poured in to performuvSolidifying and illuminating for 10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311041858.8A CN116751344B (en) | 2023-08-18 | 2023-08-18 | Reinforcing agent for acrylic plate, preparation method of reinforcing agent and acrylic plate assembling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311041858.8A CN116751344B (en) | 2023-08-18 | 2023-08-18 | Reinforcing agent for acrylic plate, preparation method of reinforcing agent and acrylic plate assembling method |
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| Publication Number | Publication Date |
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| CN116751344A CN116751344A (en) | 2023-09-15 |
| CN116751344B true CN116751344B (en) | 2023-12-08 |
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| CN104045804A (en) * | 2014-05-30 | 2014-09-17 | 陕西科技大学 | Preparation method of aqueous light-curable polyurethane paper surface reinforcing agent |
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