CN112048269A - Model machine coating adhesive and production process thereof - Google Patents
Model machine coating adhesive and production process thereof Download PDFInfo
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- CN112048269A CN112048269A CN202010833481.XA CN202010833481A CN112048269A CN 112048269 A CN112048269 A CN 112048269A CN 202010833481 A CN202010833481 A CN 202010833481A CN 112048269 A CN112048269 A CN 112048269A
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- 239000000853 adhesive Substances 0.000 title claims abstract description 29
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 29
- 239000011248 coating agent Substances 0.000 title claims abstract description 28
- 238000000576 coating method Methods 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 72
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 47
- -1 modified alicyclic amine Chemical class 0.000 claims abstract description 30
- 239000013530 defoamer Substances 0.000 claims abstract description 25
- 239000003822 epoxy resin Substances 0.000 claims abstract description 23
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 23
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 15
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 15
- 239000003085 diluting agent Substances 0.000 claims abstract description 15
- 239000006096 absorbing agent Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 59
- 239000000203 mixture Substances 0.000 claims description 38
- 238000006243 chemical reaction Methods 0.000 claims description 27
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 18
- 150000001412 amines Chemical class 0.000 claims description 18
- 229920000570 polyether Polymers 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000004033 plastic Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 7
- 230000005484 gravity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- CGLVZFOCZLHKOH-UHFFFAOYSA-N 8,18-dichloro-5,15-diethyl-5,15-dihydrodiindolo(3,2-b:3',2'-m)triphenodioxazine Chemical compound CCN1C2=CC=CC=C2C2=C1C=C1OC3=C(Cl)C4=NC(C=C5C6=CC=CC=C6N(C5=C5)CC)=C5OC4=C(Cl)C3=NC1=C2 CGLVZFOCZLHKOH-UHFFFAOYSA-N 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 4
- 235000018185 Betula X alpestris Nutrition 0.000 description 3
- 235000018212 Betula X uliginosa Nutrition 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 235000019633 pungent taste Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229940124543 ultraviolet light absorber Drugs 0.000 description 1
Classifications
-
- 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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides a model machine coating adhesive and a production process thereof, wherein the model machine coating adhesive comprises a material A and a material B, the weight ratio of the material A to the material B is 5: 2; the material A comprises: 80-85 parts of epoxy resin L-128, 5-10 parts of diluent KB62, 5-10 parts of leveling accelerator NP, 0.1-0.5 part of antioxidant V78-P, 0.1-0.5 part of organosilicon defoamer sanhe-609, 0.05-0.15 part of defoamer sanhe-5230, 0.3-0.8 part of ultraviolet-resistant absorber UV-70 and 0.05-0.15 part of purple paste PC-008; the material B comprises: 20-30 parts of polyetheramine curing agent D-230, 45-55 parts of polyetheramine T-403, 10-20 parts of modified alicyclic amine curing agent 6822, 5-15 parts of alicyclic amine curing agent HMDA2110 and 0.005-0.015 part of green paste PC-003.
Description
Technical Field
The invention belongs to the technical field of bonding glue, and particularly relates to coating bonding glue for a model machine and a production process thereof.
Background
The adhesive is used for bonding, sealing, encapsulating and coating protection of a model machine, and can play roles of water resistance, moisture resistance, dust prevention, insulation, heat conduction, confidentiality, corrosion resistance, temperature resistance and shock resistance after being cured. The existing coating adhesive has the defects of poor waterproof and moistureproof effects, poor corrosion resistance, poor weather resistance, insufficient hardness, slow curing speed and the like.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a coating adhesive for a model machine and a production process thereof, so as to overcome the defects in the prior art.
In order to achieve the purpose, the invention provides a mold machine coating adhesive which comprises a material A and a material B, wherein the weight ratio of the material A to the material B is 5: 2; wherein the material A comprises: 80-85 parts of epoxy resin L-128, 5-10 parts of diluent KB62, 5-10 parts of leveling accelerator NP, 0.1-0.5 part of antioxidant V78-P, 0.1-0.5 part of organosilicon defoamer sanhe-609, 0.05-0.15 part of defoamer sanhe-5230, 0.3-0.8 part of ultraviolet-resistant absorber UV-70 and 0.05-0.15 part of purple paste PC-008; the material B comprises: 20-30 parts of polyether amine curing agent D-230, 45-55 parts of polyether amine T-403, 10-20 parts of modified alicyclic amine curing agent 6822, 5-15 parts of alicyclic amine curing agent HMDA and 0.005-0.015 part of green paste PC-003.
The purple paste is a purple paste prepared by PC-008, wherein the purple paste is prepared from 10 parts by weight of permanent violet 105(P.V.23) and 90 parts by weight of epoxy resin NPEL-128, and the permanent violet 105(P.V.23) is purchased from Xiamen Yongxing commercial development company Limited. The purple paste PC-008 is used for improving the hue of the glue and improving the glossiness.
Green paste PC-003 self-prepared paste (made up of 10 parts by weight of phthalocyanine green (PG7) and 90 parts by weight of epoxy resin NPEL-128, phthalocyanine green (PG7) was purchased from xiamen Yonxing trade development ltd). The green paste PC-003 is used for distinguishing and preventing the mixture of the B material and other glue.
As a further description of the mold-coating adhesive according to the present invention, preferably, the mold-coating adhesive includes a material a and a material B; the material A comprises: 83.84 parts of epoxy resin L-128, 8 parts of diluent KB62, 7 parts of leveling promoter NP, 0.15 part of antioxidant V78-P, 0.4 part of organosilicon defoamer sanhe-609, 0.1 part of defoamer sanhe-5230, 0.5 part of ultraviolet absorber UV-70 and 0.1 part of purple paste PC-008; the material B comprises: 25 parts of polyether amine curing agent D-230, 50 parts of polyether amine T-403, 15 parts of modified alicyclic amine curing agent 6822, 10 parts of alicyclic amine curing agent HMDA2110 and 0.01 part of green paste PC-003.
In order to achieve another object of the present invention, the present invention further provides a production process for preparing the mold machine coating adhesive, wherein the production process comprises the following steps:
(1) preparing a material A:
(1-1) sucking epoxy resin L-128 into a reaction kettle, preserving the temperature to 80 ℃, and stirring;
(1-2) adding a diluent KB62, a leveling accelerator NP and an antioxidant V78-P into a reaction kettle with the temperature of 80 ℃, and stirring the mixture and epoxy resin L-128 together to obtain a first mixture;
(1-3) adding an organic silicon defoaming agent sanhe-609, a defoaming agent sanhe-5230, an ultraviolet-resistant absorbent UV-70 and purple paste PC-800 into the reaction kettle with the heat preservation temperature of 80 ℃, and continuously stirring to obtain a second mixture;
(1-4) starting a vacuum pump of the reaction kettle, directly vacuumizing and defoaming the reaction kettle, stopping stirring, standing, vacuumizing again until the second mixture in the reaction kettle is completely defoamed;
(1-5) stopping the vacuum pump, and filtering by using a 80-mesh filter screen to obtain a material A;
(2) preparing a material B:
(2-1) pouring the polyether amine curing agent D-230, the polyether amine T-403, the modified alicyclic amine curing agent 6822 and the alicyclic amine curing agent HMDA2110 into a specified stainless steel stirring barrel to be stirred and mixed to obtain a third mixture;
(2-2) adding the green paste into the stainless steel stirring barrel, and continuing stirring with the third mixture until the mixture is light green;
(2-3) stopping stirring, and filtering by using a 120-mesh filter screen to obtain a material B;
(3) the weight ratio of the material A to the material B is 2: 1, mixing to obtain the coating adhesive of the molding machine.
As a further illustration of the production process of the present invention, preferably, the material a comprises: 80-85 parts of epoxy resin L-128, 5-10 parts of diluent KB62, 5-10 parts of leveling accelerator NP, 0.1-0.5 part of antioxidant V78-P, 0.1-0.5 part of organosilicon defoamer sanhe-609, 0.05-0.15 part of defoamer sanhe-5230, 0.3-0.8 part of ultraviolet-resistant absorber UV-70 and 0.05-0.15 part of purple paste PC-008; the material B comprises: 20-30 parts of polyether amine curing agent D-230, 45-55 parts of polyether amine T-403, 10-20 parts of modified alicyclic amine curing agent 6822, 5-15 parts of alicyclic amine curing agent HMDA and 0.005-0.015 part of green paste PC-003.
As a further illustration of the production process of the present invention, preferably, the material a comprises: 83.84 parts of epoxy resin L-128, 8 parts of diluent KB62, 7 parts of leveling promoter NP, 0.15 part of antioxidant V78-P, 0.4 part of organosilicon defoamer sanhe-609, 0.1 part of defoamer sanhe-5230, 0.5 part of ultraviolet absorber UV-70 and 0.1 part of purple paste PC-008; the material B comprises: 25 parts of polyether amine curing agent D-230, 50 parts of polyether amine T-403, 15 parts of modified alicyclic amine curing agent 6822, 10 parts of alicyclic amine curing agent HMDA2110 and 0.01 part of green paste PC-003.
As a further explanation of the production process according to the present invention, preferably the stirring rotation speed is 15 Hz; in the step (1-2), the stirring time is 15 min; in the step (1-3), the stirring time is 45 min; in the step (1-4), the range of the vacuum pressure for vacuumizing and defoaming is 0.05-0.1Mpa, the vacuumizing and defoaming time is 30min, then the stirring is stopped, and the vacuumizing time is 45min again after the stirring is stopped.
As a further explanation of the production process of the present invention, it is preferable that in the step (2-1), the stirring speed is 1000r/min and the stirring time is 10 min; in the step (2-2), the stirring time was 20 min.
The invention has the beneficial effects that: the mold machine coating adhesive produced by the invention has the advantages of high hardness of more than 80D, good weather resistance, good moisture resistance, high curing speed, good impact resistance, strong adhesive force and the like. Wherein, the prepared material A has the advantages of slight purple transparency, automatic defoaming, good fluidity, easy operation, no pungent taste and the like. The prepared material B has the advantages of greenish transparent low-viscosity liquid, easy distinction from the material A, no obvious pungent smell, no crystallization after the storage period is more than 6 months, and the like.
Detailed Description
In order to further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solution of the present invention and not to limit the present invention.
The epoxy NPEL-128 supplier is south Asian plastics industries, Inc.;
diluent KB62 was purchased from shanghai sey gulf chemical ltd;
leveling accelerators NP were purchased from De extreme, R.C. of Guangzhou;
antioxidant V78-P was obtained from Guangzhou chemical company, Inc.;
silicone antifoam, sanhe-609, was purchased from Sanhe Polymer technology, Inc., Huizhou;
defoamer sanhe-5230 (production batch 01931116) was purchased from sanhe polymer technology ltd, hey, city;
UV-70, an ultraviolet light absorber, was purchased from Sanhe Polymer technology, Inc., Huizhou;
purple paste PC-008 self-made purple paste (which is prepared from 10 parts by weight of permanent violet 105(P.V.23) and 90 parts by weight of epoxy resin NPEL-128 in a ratio, wherein the permanent violet 105(P.V.23) is purchased from Xiamen Yongxing commercial development company Limited);
polyetheramine curing agent D-230 (equivalent to Pasteur EC301, from Pasteur, Germany);
polyetheramine T-403 is available from German extreme, R.C.;
modified alicyclic amine curing agent 6822 (equivalent 9622, available from imperial chemical ltd, guangzhou);
alicyclic amine curing agent HMDA2110 (formula II)
2110) (available from Wanhua chemical group, Inc.);
green paste PC-003 self-prepared paste (made up of 10 parts by weight of phthalocyanine green (PG7) and 90 parts by weight of epoxy resin NPEL-128, phthalocyanine green (PG7) was purchased from xiamen Yonxing trade development ltd).
Example 1
Preparing a material A:
firstly, 800g of epoxy resin L-128 is sucked into a reaction kettle, the temperature is kept at 80 ℃, and the stirring speed is set to be 15 Hz.
Then 50g of diluent KB62, 50g of leveling accelerator NP and 1g of antioxidant V78-P are added into the reaction kettle, the temperature is kept at 80 ℃, and the mixture is continuously stirred for 15min, so that a first mixture is obtained.
And finally, adding 1g of organic silicon defoamer sanhe-609, 0.5g of defoamer sanhe-5230, 3g of ultraviolet-resistant absorbent UV-70 and 0.5g of purple paste PC-008 into a reaction kettle, preserving the heat at 80 ℃, and stirring for 45min to obtain a second mixture.
And then starting a vacuum pump of the reaction kettle, directly vacuumizing and defoaming the reaction kettle for 30min, stopping stirring when the vacuum pressure of the vacuumizing and defoaming is 0.05Mpa, and vacuumizing again for 45min after the second mixture is static until the second mixture is completely defoamed.
Stopping the vacuum pump, filtering with 80 mesh filter screen, and packaging with 5kg white plastic barrel to obtain material A.
Preparing a material B:
firstly, 200g of polyetheramine curing agent D-230, 450g of polyetheramine T-403, 100g of modified alicyclic amine curing agent 6822 and 50g of alicyclic amine curing agent HMDA2110 are poured into a specified stainless steel stirring barrel and stirred for 10min at a stirring speed of 1000r/min, and then a third mixture is obtained.
0.05g of green paste PC-003 was then added to the stainless steel stirring barrel and stirring was continued with the third mixture for 20min until the third mixture was pale green.
Stopping stirring, filtering with a 120-mesh filter screen, and subpackaging with a yellow plastic bucket with a capacity of 5kg to obtain material B.
Before use, the weight ratio of the material A to the material B is 5: 2 to obtain the coating adhesive of the molding machine. The adhesive for coating the model machine is an epoxy resin adhesive with low viscosity, high gloss and high transparency, has good self-leveling property and excellent defoaming property (rapid defoaming can be realized without vacuumizing), and has smooth, clear and transparent surface after curing; the weather resistance of the coating can be excellent through special ultraviolet light resistant treatment; the method is widely suitable for encapsulating various artworks and false water; the cured product has high transparency, high gloss, flatness, excellent solvent resistance, excellent weather resistance and water resistance; birch is not easily available at high humidity; and (3) quickly curing at normal temperature.
Material A is colorless transparent to slightly purple viscous liquid, has a specific gravity (25 ℃) of about 1.02g/cm3 and a viscosity (25 ℃) of 1500-3000 cps. Material B is a colorless, transparent, low viscous liquid having a specific gravity (25 ℃ C.) of about 0.96g/cm3 and a viscosity (25 ℃ C.) of 30-100 cps.
The performance parameters of the obtained model machine coating adhesive are as follows:
bending strength: 2 at 20-30 kg/mm;
tensile shear strength: 2 at 15-20 kg/mm;
hardness: SHORE D80 or higher;
the water absorption (25 ℃/24 hours) is less than 0.1 percent.
Example 2
Preparing a material A:
firstly, 850g of epoxy resin L-128 is sucked into a reaction kettle, the temperature is kept at 80 ℃, and the stirring speed is set to be 15 Hz.
Then 100g of diluent KB62, 100g of leveling accelerator NP and 5g of antioxidant V78-P are added into the reaction kettle, the temperature is kept at 80 ℃, and the mixture is continuously stirred for 15min, so that a first mixture is obtained.
And finally, adding 5g of organic silicon defoamer sanhe-609, 1.5g of defoamer sanhe-5230, 8g of ultraviolet-resistant absorbent UV-70 and 1.5g of purple paste PC-008 into a reaction kettle, preserving the heat at 80 ℃, and stirring for 45min to obtain a second mixture.
And then starting a vacuum pump of the reaction kettle, directly vacuumizing and defoaming the reaction kettle for 30min, stopping stirring when the vacuum pressure of the vacuumizing and defoaming is 0.05Mpa, and vacuumizing again for 45min after the second mixture is static until the second mixture is completely defoamed.
Stopping the vacuum pump, filtering with 80 mesh filter screen, and packaging with 5kg white plastic barrel to obtain material A.
Preparing a material B:
300g of the polyetheramine curing agent D-230, 550g of the polyetheramine T-403, 200g of the modified alicyclic amine curing agent 6822 and 150g of the alicyclic amine curing agent HMDA2110 are poured into a specified stainless steel stirring barrel and stirred for 10min at a stirring speed of 1000r/min, and a third mixture is obtained.
0.15g of green paste was then added to the stainless steel stirring barrel and stirring continued with the third mixture for 20min until the third mixture was light green.
Stopping stirring, filtering with a 120-mesh filter screen, and subpackaging with a yellow plastic bucket with a capacity of 5kg to obtain material B.
Before use, the weight ratio of the material A to the material B is 5: 2, mixing to obtain the coating adhesive of the molding machine. The adhesive for coating the model machine is an epoxy resin adhesive with low viscosity, high gloss and high transparency, has good self-leveling property and excellent defoaming property (rapid defoaming can be realized without vacuumizing), and has smooth, clear and transparent surface after curing; the weather resistance of the coating can be excellent through special ultraviolet light resistant treatment; the method is widely suitable for encapsulating various artworks and false water; the cured product has high transparency, high gloss, flatness, excellent solvent resistance, excellent weather resistance and water resistance; birch is not easily available at high humidity; and (3) quickly curing at normal temperature. Material A is colorless transparent to slightly purple viscous liquid, has a specific gravity (25 ℃) of about 1.02g/cm3 and a viscosity (25 ℃) of 1500-3000 cps. Material B is a colorless, transparent, low viscous liquid having a specific gravity (25 ℃ C.) of about 0.96g/cm3 and a viscosity (25 ℃ C.) of 30-100 cps.
The performance parameters of the obtained model machine coating adhesive are as follows:
bending strength: 2 at 20-30 kg/mm;
tensile shear strength: 2 at 15-20 kg/mm;
hardness: SHORE D80 or higher;
the water absorption (25 ℃/24 hours) is less than 0.1 percent.
Example 3
Preparing a material A:
838.4g of epoxy resin L-128 was sucked into a reaction vessel and stirred at 80 ℃ with the stirring speed set at 15 Hz.
And then adding 80g of diluent KB62, 70g of leveling accelerator NP and 1.5g of antioxidant V78-P into the reaction kettle, preserving the temperature at 80 ℃, and continuing stirring for 15min to obtain a first mixture.
And finally, adding 4g of organic silicon defoamer sanhe-609, 1g of defoamer sanhe-5230, 5g of ultraviolet-resistant absorbent UV-70 and 0.1g of purple paste PC-008 into the reaction kettle, preserving the temperature at 80 ℃, and stirring for 45min to obtain a second mixture.
And then starting a vacuum pump of the reaction kettle, directly vacuumizing and defoaming the reaction kettle for 30min, stopping stirring when the vacuum pressure of the vacuumizing and defoaming is 0.1Mpa, and vacuumizing again for 45min after the second mixture is static until the second mixture is completely defoamed.
Stopping the vacuum pump, filtering with 80 mesh filter screen, and packaging with 5kg white plastic barrel to obtain material A.
Preparing a material B:
pouring 250g of the polyether amine curing agent D-230, 500g of the polyether amine T-403, 150g of the modified alicyclic amine curing agent 6822 and 100g of the alicyclic amine curing agent HMDA2110 into a specified stainless steel stirring barrel, and stirring at a stirring speed of 1000r/min for 10min to obtain a third mixture.
0.1g of green paste PC-003 was then added to the stainless steel stirring barrel and stirring continued with the third mixture for 20min until the third mixture was pale green.
Stopping stirring, filtering with a 120-mesh filter screen, and subpackaging with a yellow plastic bucket with a capacity of 5kg to obtain material B.
Before use, the weight ratio of the material A to the material B is 5: 2, mixing to obtain the model machine coating adhesive which is an epoxy resin adhesive with low viscosity, high gloss and high transparency, has good self-leveling property and excellent defoaming property (can be quickly defoamed without being vacuumized), and has smooth, clear and transparent surface after being cured; the weather resistance of the coating can be excellent through special ultraviolet light resistant treatment; the method is widely suitable for encapsulating various artworks and false water; the cured product has high transparency, high gloss, flatness, excellent solvent resistance, excellent weather resistance and water resistance; birch is not easily available at high humidity; and (3) quickly curing at normal temperature.
Material A is colorless transparent to slightly purple viscous liquid, has a specific gravity (25 ℃) of about 1.02g/cm3 and a viscosity (25 ℃) of 1500-3000 cps. Material B is a colorless, transparent, low viscous liquid having a specific gravity (25 ℃ C.) of about 0.96g/cm3 and a viscosity (25 ℃ C.) of 30-100 cps.
The performance parameters of the obtained model machine coating adhesive are as follows: (humidity 70%, temperature 25 ℃ C.)
Bending strength: 2 at 20-30 kg/mm;
tensile shear strength: 2 at 15-20 kg/mm;
hardness: SHORE D80 or higher;
the water absorption (25 ℃/24 hours) is less than 0.1 percent.
Application method：
Mixing ratio: a: b is 5: 2 (weight ratio);
operable time: 25 ℃/20-25 minutes (500 g of liquid preparation);
25 ℃/2-3 hours (100 g of liquid preparation);
gel time: 25 ℃/30-45 minutes (500 g of liquid preparation);
25 ℃/5-6 hours (100 g of liquid preparation);
curing conditions are as follows: initial curing at 25 deg.C/60-90 min (500 g of liquid preparation); and (3) complete curing: 25 ℃/24h, 60 ℃/2h (the room temperature curing time is prolonged in winter).
The using method and the notice:
mixing in strict proportion and fully stirring uniformly.
When the relative humidity is more than 80%, the surface of the cured product may easily absorb moisture in the air to form a white mist. Therefore, when the relative humidity is more than 80%, it is recommended to use heating curing instead of normal temperature curing.
The higher the operating temperature, the shorter the usable time and the faster the curing speed; the lower the operating temperature, the longer the pot life, and the slower the cure rate.
After the use, the barrel cover is required to be closed, so that the quality problem caused by moisture intrusion is avoided.
Storage and packaging:
the product is sealed and stored in ventilated, shady and dry places, the shelf life of the agent A is six months, and the shelf life of the agent B is six months.
It should be noted that the above summary and the detailed description are intended to demonstrate the practical application of the technical solutions provided by the present invention, and should not be construed as limiting the scope of the present invention. Various modifications, equivalent substitutions, or improvements may be made by those skilled in the art within the spirit and principles of the invention. The scope of the invention is to be determined by the appended claims.
Claims (7)
1. The model machine coating adhesive is characterized by comprising a material A and a material B, wherein the weight ratio of the material A to the material B is 5: 2; wherein,
the material A comprises: 80-85 parts of epoxy resin L-128, 5-10 parts of diluent KB62, 5-10 parts of leveling accelerator NP, 0.1-0.5 part of antioxidant V78-P, 0.1-0.5 part of organosilicon defoamer sanhe-609, 0.05-0.15 part of defoamer sanhe-5230, 0.3-0.8 part of ultraviolet-resistant absorber UV-70 and 0.05-0.15 part of purple paste PC-008;
the material B comprises: 20-30 parts of polyetheramine curing agent D-230, 45-55 parts of polyetheramine T-403, 10-20 parts of modified alicyclic amine curing agent 6822, 5-15 parts of alicyclic amine curing agent HMDA2110 and 0.005-0.015 part of green paste PC-003.
2. The mold machine-coating adhesive according to claim 1,
the material A comprises: 83.84 parts of epoxy resin L-128, 8 parts of diluent KB62, 7 parts of leveling promoter NP, 0.15 part of antioxidant V78-P, 0.4 part of organosilicon defoamer sanhe-609, 0.1 part of defoamer sanhe-5230, 0.5 part of ultraviolet absorber UV-70 and 0.1 part of purple paste PC-008;
the material B comprises: 25 parts of polyether amine curing agent D-230, 50 parts of polyether amine T-403, 15 parts of modified alicyclic amine curing agent 6822, 10 parts of alicyclic amine curing agent HMDA and 0.01 part of green paste PC-003.
3. A production process for preparing the mold-machine-coated adhesive according to claim 1 or 2, comprising the steps of:
(1) preparing a material A:
(1-1) sucking epoxy resin L-128 into a reaction kettle, preserving the temperature to 80 ℃, and stirring;
(1-2) adding a diluent KB62, a leveling accelerator NP and an antioxidant V78-P into a reaction kettle with the temperature of 80 ℃, and stirring the mixture and epoxy resin L-128 together to obtain a first mixture;
(1-3) adding an organic silicon defoaming agent sanhe-609, a defoaming agent sanhe-5230, an ultraviolet-resistant absorbent UV-70 and purple paste PC-008 into the reaction kettle with the heat preservation temperature of 80 ℃, and continuously stirring to obtain a second mixture;
(1-4) starting a vacuum pump of the reaction kettle, directly vacuumizing and defoaming the reaction kettle, stopping stirring, standing, vacuumizing again until the second mixture in the reaction kettle is completely defoamed;
(1-5) stopping the vacuum pump, and filtering by using a 80-mesh filter screen to obtain a material A;
(2) preparing a material B:
(2-1) pouring the polyether amine curing agent D-230, the polyether amine T-403, the modified alicyclic amine curing agent 6822 and the alicyclic amine curing agent HMDA2110 into a specified stainless steel stirring barrel to be stirred and mixed to obtain a third mixture;
(2-2) adding the green paste PC-003 into the stainless steel stirring barrel, and continuing stirring together with the third mixture until the mixture is light green;
(2-3) stopping stirring, and filtering by using a 120-mesh filter screen to obtain a material B;
(3) the weight ratio of the material A to the material B is 2: 1, mixing to obtain the coating adhesive of the molding machine.
4. The production process of claim 3, wherein the material A comprises: 80-85 parts of epoxy resin L-128, 5-10 parts of diluent KB62, 5-10 parts of leveling accelerator NP, 0.1-0.5 part of antioxidant V78-P, 0.1-0.5 part of organosilicon defoamer sanhe-609, 0.05-0.15 part of defoamer sanhe-5230, 0.3-0.8 part of ultraviolet-resistant absorber UV-70 and 0.05-0.15 part of purple paste PC-008; the material B comprises: 20-30 parts of polyetheramine curing agent D-230, 45-55 parts of polyetheramine T-403, 10-20 parts of modified alicyclic amine curing agent 6822, 5-15 parts of alicyclic amine curing agent HMDA2110 and 0.005-0.015 part of green paste PC-003.
5. The production process of claim 3, wherein the material A comprises: 83.84 parts of epoxy resin L-128, 8 parts of diluent KB62, 7 parts of leveling promoter NP, 0.15 part of antioxidant V78-P, 0.4 part of organosilicon defoamer sanhe-609, 0.1 part of defoamer sanhe-5230, 0.5 part of ultraviolet absorber UV-70 and 0.1 part of purple paste PC-008; the material B comprises: 25 parts of polyether amine curing agent D-230, 50 parts of polyether amine T-403, 15 parts of modified alicyclic amine curing agent 6822, 10 parts of alicyclic amine curing agent HMDA2110 and 0.01 part of green paste PC-003.
6. The production process according to claim 3, wherein in the step (1-1), the stirring rotation speed is 15 Hz; in the step (1-2), the stirring time is 15 min; in the step (1-3), the stirring time is 45 min; in the step (1-4), the range of the vacuum pressure for vacuumizing and defoaming is 0.05-0.1Mpa, the vacuumizing and defoaming time is 30min, then the stirring is stopped, and the vacuumizing time is 45min again after the stirring is stopped.
7. The production process according to claim 3, wherein in the step (2-1), the stirring speed is 1000r/min and the stirring time is 10 min; in the step (2-2), the stirring time was 20 min.
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