CN117382201A - Preparation process and method for releasing 3D hot-pressing tensile stress - Google Patents
Preparation process and method for releasing 3D hot-pressing tensile stress Download PDFInfo
- Publication number
- CN117382201A CN117382201A CN202311109248.7A CN202311109248A CN117382201A CN 117382201 A CN117382201 A CN 117382201A CN 202311109248 A CN202311109248 A CN 202311109248A CN 117382201 A CN117382201 A CN 117382201A
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- auxiliary agent
- hot
- polyacrylate
- tensile stress
- polyurethane
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- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000007731 hot pressing Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 28
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 28
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 24
- 239000003292 glue Substances 0.000 claims abstract description 20
- 229920006264 polyurethane film Polymers 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 14
- 229920002635 polyurethane Polymers 0.000 claims abstract description 13
- 239000004814 polyurethane Substances 0.000 claims abstract description 13
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 238000001746 injection moulding Methods 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims abstract description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 4
- 239000006260 foam Substances 0.000 claims abstract description 4
- 239000003112 inhibitor Substances 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000000178 monomer Substances 0.000 claims abstract description 4
- 238000000016 photochemical curing Methods 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 239000002562 thickening agent Substances 0.000 claims abstract description 4
- 238000001723 curing Methods 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 230000009471 action Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Classifications
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
-
- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses a preparation process for releasing 3D hot-pressing tensile stress, which comprises the following steps: and (3) glue preparation: 50% -70% of polyacrylate, 25% -40% of acrylic acid monomer and 2% -5% of photo-curing agent are mixed and stirred, 3% -5% of auxiliary agent is added in the stirring process, then the PH value is regulated to be between 6 and 7, and the polyacrylate adhesive bonding glue is obtained after standing for 24 hours; and (3) preparing a plate: the polyurethane is used as an attachment body, polyurethane particles are extruded and molded by an injection molding machine to obtain a polyurethane film plate, the mixing and stirring conditions during the preparation of the glue are 800r/min, and meanwhile, the auxiliary agent comprises the following components: the thickening agent accounts for 20-40% of the total auxiliary agent, the foam inhibitor accounts for 20-40% of the total auxiliary agent, the cross-linking agent accounts for 30-50% of the total auxiliary agent, and the compatibilizer accounts for 30-50% of the total auxiliary agent. The invention has simple standardized process flow and low cost, improves the production operation efficiency and solves the problem of releasing stress to the main material.
Description
Technical Field
The invention relates to the technical field of hot pressing, in particular to a preparation process and a preparation method for releasing 3D hot pressing tensile stress.
Background
In recent years, with the development of society, people have increasingly highlighted virtual reality experience, users have gradually raised quality pursuits and affordable products, and development of novel processes to accelerate replacement of traditional processes is a focus problem of current industry development.
In the fields of AR intelligent middle frame VR intelligent middle frame 3D sunglasses display, or other automobile 3D central control display HUD display and household appliance high-curvature window piece production and processing, the traditional PVC film attaching process is low in yield, high in cost and complex in flow, colloid falling off is easily generated by hydrolysis under illumination or damp-heat environment, surface energy is low and appearance type is poor when colloid is transferred onto a substrate, after hot press molding, internal stress release is not generated at the highest point stretching position of a substrate sink, and the problems of high cost, complex processing process, poor stress and the like are caused.
Disclosure of Invention
The invention aims to provide a preparation process and a preparation method for releasing 3D hot-pressing tensile stress, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the method comprises the following steps:
and (3) glue preparation: 50% -70% of polyacrylate, 25% -40% of acrylic acid monomer and 2% -5% of photo-curing agent are mixed and stirred, 3% -5% of auxiliary agent is added in the stirring process, then the PH value is regulated to be between 6 and 7, and the polyacrylate adhesive bonding glue is obtained after standing for 24 hours;
and (3) preparing a plate: and (3) taking polyurethane as an attachment body, and extruding and forming polyurethane particles by using an injection molding machine to obtain the polyurethane film plate.
Preferably, the mixing and stirring conditions in the preparation of the glue are 800r/min, and meanwhile, the auxiliary agent comprises the following components: the thickening agent accounts for 20-40% of the total auxiliary agent, the foam inhibitor accounts for 20-40% of the total auxiliary agent, the cross-linking agent accounts for 30-50% of the total auxiliary agent, and the compatibilizer accounts for 30-50% of the total auxiliary agent.
Preferably, the thickness of the thin film plate produced during the preparation of the plate can be as follows: 0.125mm, 0.1mm, 0.1888mm.
A method of 3D hot-press tensile stress relief, comprising the steps of:
coating polyacrylate adhesive bonding glue on the surface of a base material, bonding a polyurethane film plate on the surface of the base material, and performing rolling bonding;
irradiating the rolled and bonded product by using UV (ultraviolet) for 5-9 minutes, so as to finish primary curing, and then performing irradiation curing again to integrate the polyurethane film plate and the substrate through the cured polyacrylate adhesive bonding glue;
and thirdly, processing the cured product into a sinking groove by using a CNC numerical control lathe, performing hot press molding after processing, deriving elongation at break to the highest position of the polyacrylate and the polyurethane sinking groove, increasing stress at the moment, reducing stress at the moment, releasing and transferring internal stress to the polyacrylate and the polyurethane film sheet, and removing the polyacrylate and the polyurethane film to obtain the integrated molded product.
Preferably, in the rolling lamination in the first step: roller hardness is 75 degrees, pressure is 45kg, and speed is 20%.
Preferably, the first curing condition in the second step is: LED energy: 1600+ -1000 mj/cm 2 Light intensity: more than or equal to 800mw/cm 2 The second curing conditions were: energy: 900+/-100 mj/cm 2 Light intensity: more than or equal to 800mw/cm 2 。
Preferably, the size of the sink in the third step is as follows: the depth is 0.4 plus or minus 0.05mm, the width is 10 plus or minus 1.0mm, and meanwhile, when hot press molding is carried out, the temperature of an upper die is 320 ℃, and the temperature of a lower die is 120 ℃.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the polyurethane film is formed by injection molding and extrusion of the polyurethane particles, and is bonded with the base material through the polyacrylate adhesive bonding glue, so that the standard process flow is simple, the cost is low, the production operation efficiency is improved, the polyurethane film is bonded with the base material through the polyacrylate adhesive bonding glue, the stress release defect is 0%, and the other appearance defects are solved;
2. the invention also carries out shaping irradiation curing on the shaped product by utilizing UV irradiation, the cured product is processed and deposited in a groove by utilizing a CNC numerical control lathe, hot press shaping is carried out after the processing is finished, the elongation at break is derived to the highest position of the polyacrylate and the polyurethane deposited in the groove, the stress at the moment of yielding is increased, the stress at the moment of breaking is reduced, the internal stress is released and transferred to the polyacrylate and the polyurethane film sheet, the polyacrylate and the polyurethane film sheet are removed, the integrated shaping product is obtained, the problem that the stress is released to a main material is solved, and meanwhile, the material synthesis step is simple, the cost is low, the source of raw materials is wide, and the using method is simple.
Drawings
FIG. 1 is a schematic flow chart of a method for releasing 3D hot-pressing tensile stress;
fig. 2 is a schematic diagram of a product structure of a process and a method for preparing 3D hot-pressing tensile stress relief.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the present invention provides a technical solution: the method comprises the following steps:
50% -70% of polyacrylate, 25% -40% of acrylic acid monomer and 2% -5% of photo-curing agent are mixed and stirred, 3% -5% of auxiliary agent is added in the stirring process, then the PH value is regulated to be between 6 and 7, and the polyacrylate adhesive bonding glue is obtained after standing for 24 hours;
the mixing and stirring conditions in the preparation of the glue are 800r/min, and meanwhile, the auxiliary agent comprises the following components: the thickening agent accounts for 20-40% of the total auxiliary agent, the foam inhibitor accounts for 20-40% of the total auxiliary agent, the cross-linking agent accounts for 30-50% of the total auxiliary agent, and the compatibilizer accounts for 30-50% of the total auxiliary agent.
The polyurethane is used as an attachment body, polyurethane particles are extruded and molded by an injection molding machine to obtain a polyurethane film plate, and the thickness of the film plate produced during the preparation of the plate can be as follows: 0.125mm, 0.1mm, 0.1888mm:
a method of 3D hot-press tensile stress relief, comprising the steps of:
coating polyacrylate adhesive bonding glue on the surface of a base material, wherein the glue yield is 80%, bonding a polyurethane film plate on the surface of the base material, and performing rolling bonding, wherein the roller hardness is 75 degrees, the pressure is 45kg, and the speed is 20%;
step two, irradiating the rolled and laminated product by using UV (ultraviolet) for 5-9 minutes, wherein the irradiation time is LED energy: 1600+ -1000 mj/cm 2 Light intensity: more than or equal to 800mw/cm 2 Thereby completing the primary curing, and then carrying out the irradiation curing again, wherein the secondary curing conditions are as follows: energy: 900+/-100 mj/cm 2 Light intensity: more than or equal to 800mw/cm 2 The polyurethane film plate and the base material are integrated through the cured polyacrylate adhesive bonding glue, so that the light resistance, high and low temperature resistance and difficult easiness in application are achievedThe effect of hydrolysis;
and thirdly, processing the cured product into a sinking groove (with the depth of 0.4+/-0.05 mm and the width of 10+/-1.0 mm) by using a CNC numerical control lathe, performing hot press molding after processing, wherein the upper die temperature is 320 ℃, the lower die temperature is 120 ℃, the elongation at break is derived to the highest position of the polyacrylate and the polyurethane sinking groove, the stress at the moment of yield is increased, the stress at the break is reduced, the internal stress is released and transferred to the polyacrylate and the polyurethane film sheet, and the polyacrylate and the polyurethane film are removed to obtain the integrated molded product.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The preparation process for releasing the 3D hot-pressing tensile stress is characterized by comprising the following steps of:
and (3) glue preparation: 50% -70% of polyacrylate, 25% -40% of acrylic acid monomer and 2% -5% of photo-curing agent are mixed and stirred, 3% -5% of auxiliary agent is added in the stirring process, then the PH value is regulated to be between 6 and 7, and the polyacrylate adhesive bonding glue is obtained after standing for 24 hours;
and (3) preparing a plate: and (3) taking polyurethane as an attachment body, and extruding and forming polyurethane particles by using an injection molding machine to obtain the polyurethane film plate.
2. The process for preparing 3D hot-pressing tensile stress release according to claim 1, wherein: the mixing and stirring conditions in the preparation of the glue are 800r/min, and meanwhile, the auxiliary agent comprises the following components: the thickening agent accounts for 20-40% of the total auxiliary agent, the foam inhibitor accounts for 20-40% of the total auxiliary agent, the cross-linking agent accounts for 30-50% of the total auxiliary agent, and the compatibilizer accounts for 30-50% of the total auxiliary agent.
3. The process and method for preparing a 3D hot-press tensile stress relief according to claim 1, wherein: the thickness of the thin film plate produced during the preparation of the plate can be as follows: 0.125mm, 0.1mm, 0.1888mm.
4. A method of 3D hot-press tensile stress relief, comprising the steps of:
coating polyacrylate adhesive bonding glue on the surface of a base material, bonding a polyurethane film plate on the surface of the base material, and performing rolling bonding;
irradiating the rolled and bonded product by using UV (ultraviolet) for 5-9 minutes, so as to finish primary curing, and then performing irradiation curing again to integrate the polyurethane film plate and the substrate through the cured polyacrylate adhesive bonding glue;
and thirdly, processing the cured product into a sinking groove by using a CNC numerical control lathe, performing hot press molding after processing, deriving elongation at break to the highest position of the polyacrylate and the polyurethane sinking groove, increasing stress at the moment, reducing stress at the moment, releasing and transferring internal stress to the polyacrylate and the polyurethane film sheet, and removing the polyacrylate and the polyurethane film to obtain the integrated molded product.
5. The method of 3D hot-press tensile stress relief according to claim 4, wherein: in the first step, when rolling and laminating: roller hardness is 75 degrees, pressure is 45kg, and speed is 20%.
6. The method of 3D hot-press tensile stress relief according to claim 4, wherein: the first curing conditions in the second step are as follows: LED energy: 1600+ -1000 mj/cm 2 Light intensity: more than or equal to 800mw/cm 2 The second curing conditions were: energy: 900+/-100 mj/cm 2 Light intensity: more than or equal to 800mw/cm 2 。
7. The method of 3D hot-press tensile stress relief according to claim 4, wherein: the size of the sinking groove in the third step is as follows: the depth is 0.4 plus or minus 0.05mm, the width is 10 plus or minus 1.0mm, and meanwhile, when hot press molding is carried out, the temperature of an upper die is 320 ℃, and the temperature of a lower die is 120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311109248.7A CN117382201A (en) | 2023-08-31 | 2023-08-31 | Preparation process and method for releasing 3D hot-pressing tensile stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311109248.7A CN117382201A (en) | 2023-08-31 | 2023-08-31 | Preparation process and method for releasing 3D hot-pressing tensile stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117382201A true CN117382201A (en) | 2024-01-12 |
Family
ID=89435184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311109248.7A Pending CN117382201A (en) | 2023-08-31 | 2023-08-31 | Preparation process and method for releasing 3D hot-pressing tensile stress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117382201A (en) |
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2023
- 2023-08-31 CN CN202311109248.7A patent/CN117382201A/en active Pending
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