CN103772622A - Resin capable of being thickened at room temperature for sheet molding compound and preparation method thereof - Google Patents
Resin capable of being thickened at room temperature for sheet molding compound and preparation method thereof Download PDFInfo
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- CN103772622A CN103772622A CN201410029587.9A CN201410029587A CN103772622A CN 103772622 A CN103772622 A CN 103772622A CN 201410029587 A CN201410029587 A CN 201410029587A CN 103772622 A CN103772622 A CN 103772622A
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- 229920005989 resin Polymers 0.000 title claims abstract description 45
- 239000011347 resin Substances 0.000 title claims abstract description 45
- 239000003677 Sheet moulding compound Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 48
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims abstract description 43
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims abstract description 39
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 16
- 239000003112 inhibitor Substances 0.000 claims abstract description 15
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000008719 thickening Effects 0.000 claims description 33
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 30
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 21
- 238000010792 warming Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 230000003647 oxidation Effects 0.000 claims description 13
- 238000007254 oxidation reaction Methods 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 10
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinyl group Chemical group C1(O)=CC(O)=CC=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 10
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical group C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 6
- XRCRJFOGPCJKPF-UHFFFAOYSA-N 2-butylbenzene-1,4-diol Chemical compound CCCCC1=CC(O)=CC=C1O XRCRJFOGPCJKPF-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- CNHDIAIOKMXOLK-UHFFFAOYSA-N toluquinol Chemical group CC1=CC(O)=CC=C1O CNHDIAIOKMXOLK-UHFFFAOYSA-N 0.000 claims description 5
- 150000008064 anhydrides Chemical class 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000006116 polymerization reaction Methods 0.000 abstract 2
- 239000003963 antioxidant agent Substances 0.000 abstract 1
- 230000003078 antioxidant effect Effects 0.000 abstract 1
- 239000003340 retarding agent Substances 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 150000001991 dicarboxylic acids Chemical class 0.000 description 2
- -1 1/2 weight Chemical compound 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005502 peroxidation Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
The invention discloses resin capable of being thickened at room temperature for a sheet molding compound and a preparation method thereof. The resin is mainly prepared by the following components in parts by weight: 200-300 parts of oxalic acid, 1000-1200 parts of maleic anhydride, 400-600 parts of propylene glycol, 600-750 parts of diethylene glycol, 950-1050 parts of styrene, 0.2-0.8 part of antioxidant, 0.2-0.8 part of high temperature polymerization inhibitor, 0.5-1.5 parts of normal temperature polymerization inhibitor, and 0.5-1.5 parts of retarding agent. Compared with the prior art, the resin can be rapidly thickened at room temperature to reach the viscosity required by the pressing technology, and can also be rapidly thickened at low room temperature in winter, so that the production efficiency of sheet molding compounds is improved, and the quality of the product is stabilized.
Description
Technical field
The invention belongs to chemical field, be specifically related to a kind of sheet molding compound resin that can normal temperature thickening and preparation method thereof.
Background technology
Unsaturated polyester resin (Unsaturated Polyester Resins, be called for short UPR) be the chain macromolecule compound with more function group, on its skeleton main chain, there is polyester chain link and unsaturated double-bond, and at macromolecular chain two ends respectively with carboxyl and hydroxyl.The benefit that uses unsaturated polyester resin maximum be its thinner (vinylbenzene) while in the end using by with main chain on two key generation crosslinking copolymerizations react; so the volatile quantity of solvent is less in use procedure; thereby belong to the product of environment protection one class, be often that matrix is for SMC/BMC goods field by this product.
Matrix material is the same with other traditional materials, can further make with various working method or moulding technique the finished product of various structures and type, to meet different application requiring.In these forming methods, SMC mould pressing process is mechanized, and level of automation is high, is particularly suitable for that manufactured size accuracy requirement is high, the high-quality product of large, good appearance in batches.SMC technique has been occupied very important status at present in the matrix material industry of World Developed Countries, and has the trend that replaces other most of complete processings.
Although SMC technique and technology are through development and the improvement of decades, but the slaking of sheet molding compound still needs to rely on baking oven, drying room just can reach the object of fast thickening, under the lower environment of room temperature in winter, even if rely on baking oven, drying room also to need the long curing time; And most of sheet molding compound source mill not possess the facility of the condition of baking oven, drying room or baking oven, drying room undesirable, be more difficult to reach the object of fast thickening.
Therefore, the thickening characteristic of the special matrix resin of research sheet molding compound, and according to thickening characteristic factor, study and define the formula of the special matrix resin of sheet molding compound, to reach quick and stable thickening characteristic, the efficiency and the quality that improve and stablize user's made SMC product with this are the task of top priority.
Summary of the invention
For above-mentioned sheet molding compound from being fabricated into the low phenomenon of production efficiency that the suppressible time causes compared with long problem, provide a kind of can fast thickening under normal temperature condition to the sheet molding compound resin that can suppress viscosity.This resin can reduce the curing time of sheet molding compound and solve cannot fast thickening under the condition that does not possess baking oven, drying room problem, thereby improve the production efficiency of sheet molding compound and stablize its quality product.
Another object of the present invention is to provide the preparation method of above-mentioned sheet molding compound resin.
The object of the invention is to realize in the following manner:
Sheet molding compound resin that can normal temperature thickening, this resin is mainly made up of the raw material of following weight part:
Oxalic acid: 200-300 part, cis-butenedioic anhydride: 1000-1200 part, propylene glycol: 400-600 part, Diethylene Glycol: 600-750 part, vinylbenzene: 950-1050 part, oxidation inhibitor: 0.2-0.8 part, high temperature stopper: 0.2-0.8 part, normal temperature stopper: 0.5-1.5 part, retarder: 0.5-1.5 part.
This resin is preferably mainly made up of the raw material of following weight part:
Oxalic acid: 250-300 part, cis-butenedioic anhydride: 1000-1050 part, propylene glycol: 450-550 part, Diethylene Glycol: 650-700 part, vinylbenzene: 1000-1050 part, oxidation inhibitor: 0.4-0.6 part, high temperature stopper: 0.4-0.6 part, normal temperature stopper: 0.8-1.2 part, retarder: 0.8-1.2 part.
This resin is most preferably mainly made up of the raw material of following weight part:
Oxalic acid: 300 parts, cis-butenedioic anhydride: 1000 parts, propylene glycol: 500 parts, Diethylene Glycol: 680 parts, vinylbenzene: 1000 parts, oxidation inhibitor: 0.5 part, high temperature stopper: 0.5 part, normal temperature stopper: 1 part, retarder: 1 part.
Described oxidation inhibitor is preferably triphenyl phosphite.High temperature stopper is preferably Resorcinol.Normal temperature stopper is preferably toluhydroquinone.Retarder is preferably Tert. Butyl Hydroquinone.Propylene glycol is preferably 1,2-PD.The ratio that has improved unsaturated acid cis-butenedioic anhydride in the present invention's formula, has significantly improved reactive behavior.
Above-mentioned sheet molding compound that can normal temperature thickening comprises the following steps by the preparation method of resin:
A) be 2～4m at nitrogen flow
3under the condition of/h, after being mixed, the high temperature stopper of propylene glycol, Diethylene Glycol, 1/2 weight, oxalic acid, cis-butenedioic anhydride and oxidation inhibitor is warming up to 75～80 ℃, after insulation reaction 1～1.5h, heat release to 140 ℃, be warming up to 180 ℃ with the speed of 20 ℃/h, be warming up to 190 ℃ with the speed of 5 ℃/h again, be finally warming up to 210 ℃ with the speed of 10 ℃/h;
B) insulation reaction 4.5～5.5 hours under 210 ℃ of conditions, material acid number reaches 68～72mgKOH/g, and nitrogen flow is adjusted to 70～80m
3/ h, reacts to acid number and reaches 32～34mgKOH/g, and nitrogen flow is adjusted to 10～15m
3/ h, cooling, in the time that temperature of charge is down to 180 ℃, adds remaining high temperature stopper, is down to 170～175 ℃ and obtains unsaturated polyester resin;
C) unsaturated polyester resin of obtaining is slowly added in the mixture of vinylbenzene and normal temperature stopper, be cooled to while stirring 70～80 ℃, 2～3h adds whole unsaturated polyester resins, then is cooled to 40～45 ℃, add retarder, more than stirring 30min.
Prepared by the inventive method can normal temperature thickening sheet molding compound by the number-average molecular weight of resin in 4000～5000 scopes, can between 32～34mgKOH/g, embody by middle control acid number, extend about 2 hours reaction times simultaneously, prevented that molecular weight from crossing the easily poor defect of the too low thickening properties of polymeric gel and molecular weight in reactor of high resin.Resin of the present invention can be at fast thickening under normal temperature condition to the required viscosity of pressing process, also can fast thickening in room temperature lower winter, and improve the production efficiency of sheet molding compound and stablize its quality product with this.
Beneficial effect of the present invention compared with the prior art:
1) use symmetry monounsaturated dicarboxylic acid oxalic acid to replace the monounsaturated dicarboxylic acid phthalic anhydride of conventional asymmetry, and increase its consumption content of carboxyl end group is significantly increased, do not increasing under the prerequisite of material cost thereby realize, the degree of crystallinity that improves resin, makes the pressed ware of resin have good electrical property and surface smoothness.
2) resin that prepared by the inventive method can increase number-average molecular weight to 4000～5000 scope of resin, coordinate compound inhibition system, high reaction activity and higher content of carboxyl end group in resin, realize under normal temperature condition can fast thickening to the required viscosity of pressing process, even also can realize fast thickening to the required viscosity of pressing process lower winter in room temperature.
3) product viscosity 2.5Pa.S of the present invention left and right, makes resin further obtain excellent surface smoothness.
4) conventional sheet molding compound need to just can reach needed viscosity with resin after the compacting in 12～24 hours of 60～80 ℃ of high bakes; And sheet molding compound of the present invention is placed the viscosity that can reach pressing process requirement for 24 hours with resin normal temperature.
Thickening Examination on experimental operation:
1, weigh successively after resin (153.6g), polystyrene solution (67.2g), vinylbenzene (18g), the peroxidation tert-butyl ester (2.64g) and Zinic stearas (10.2g) and start to stir (turn/min of speed 600-800 material can not overflow), within 5 minutes, stop stirring.
2, weigh calcium carbonate-400(348g) under agitation slowly add in step 1, progressively improve stirring velocity and reach 1000 turn/min.After approximately needing within 5-6 minute, stir, survey initial viscosity (η 0).
3, weigh magnesium oxide (2.76g) and add stirring (turn/min of speed 800-1000) in step 2, after 1-2 minute, stop stirring.
4, place after 15 minutes and survey viscosity (η for the first time
15), after 30 minutes, survey viscosity (η for the first time
30), after 60 minutes, survey viscosity (η for the first time
60).The resin dedicated thickening of sheet molding compound of the present invention detects the following standard of data fit: (25 ℃ of room temperatures) initial viscosity: 200～500Pa.S, 15 minutes viscosity: 500～800Pa.S, 30 minutes viscosity: 800～1000Pa.S, 60 minutes viscosity: more than 1000Pa.S.
5, place and measure cone penetration (25 ℃ of room temperatures) below 80mm with cone penetration instrument in 24 hours.
Embodiment
Further illustrate the present invention by specific embodiment below.But the detail of embodiment only, for explaining the present invention, should not be construed as limited overall technical solution.
Embodiment 1
Formula: oxalic acid: 300 weight parts, cis-butenedioic anhydride: 1000 weight parts, 1,2-propylene glycol: 500 weight parts, Diethylene Glycol: 680 weight parts, vinylbenzene: 1000 weight parts, triphenyl phosphite: 0.5 weight part, Resorcinol: 0.5 weight part, toluhydroquinone: 1 weight part, Tert. Butyl Hydroquinone: 1 weight part.
The preparation method of this unsaturated polyester resin is:
A) be 2～4m at nitrogen flow
3under the condition of/h, by 1, after mixing, high temperature stopper, oxalic acid, cis-butenedioic anhydride and the oxidation inhibitor of 2-propylene glycol, Diethylene Glycol, 1/2 weight is warming up to 75～80 ℃, after insulation reaction 1～1.5h, heat release to 140 ℃, be warming up to 180 ℃ with the speed of 20 ℃/h, then be warming up to 190 ℃ with the speed of 5 ℃/h, be finally warming up to 210 ℃ with the speed of 10 ℃/h;
B) insulation reaction 4.5～5.5 hours under 210 ℃ of conditions, material acid number reaches 68～72mgKOH/g, and nitrogen flow is adjusted to 70～80m
3/ h, reacts to acid number and reaches 32～34mgKOH/g, and nitrogen flow is adjusted to 10～15m
3/ h, cooling, in the time that temperature of charge is down to 180 ℃, adds remaining high temperature stopper, is down to 170～175 ℃ and obtains unsaturated polyester resin;
C) unsaturated polyester resin of obtaining is slowly added in the mixture of vinylbenzene and normal temperature stopper, be cooled to while stirring 70～80 ℃, 2～3h adds whole unsaturated polyester resins, be cooled to again 40～45 ℃, add retarder, stir more than 30min, obtain can normal temperature thickening sheet molding compound resin.
This can normal temperature thickening sheet molding compound also can add conventional initiator, solidifying agent etc. to make casting matrix according to the requirement of " making of sample " in GB/T8237-2005 with resin, be 30min set time.
Embodiment 2
Formula: oxalic acid: 250 weight parts, cis-butenedioic anhydride: 1050 weight parts, 1,2-propylene glycol: 450 weight parts, Diethylene Glycol: 700 weight parts, vinylbenzene: 1050 weight parts, triphenyl phosphite: 0.6 weight part, Resorcinol: 0.6 weight part, toluhydroquinone: 0.8 weight part, Tert. Butyl Hydroquinone: 0.8 weight part.
The preparation method of this unsaturated polyester resin is:
A) be 2～4m at nitrogen flow
3under the condition of/h, by 1, after mixing, 2-propylene glycol, Diethylene Glycol, 1/2 high temperature stopper, oxalic acid, cis-butenedioic anhydride and oxidation inhibitor is warming up to 75～80 ℃, after insulation reaction 1～1.5h, heat release to 140 ℃, be warming up to 180 ℃ with the speed of 20 ℃/h, then be warming up to 190 ℃ with the speed of 5 ℃/h, be finally warming up to 210 ℃ with the speed of 10 ℃/h;
B) insulation reaction 4.5～5.5 hours under 210 ℃ of conditions, material acid number reaches 68～72mgKOH/g, and nitrogen flow is adjusted to 70～80m
3/ h, reacts to acid number and reaches 32～34mgKOH/g, and nitrogen flow is adjusted to 10～15m
3/ h, cooling, in the time that temperature of charge is down to 180 ℃, adds remaining high temperature stopper, is down to 170～175 ℃ and obtains unsaturated polyester resin;
C) unsaturated polyester resin of obtaining is slowly added in the mixture of vinylbenzene and normal temperature stopper, be cooled to while stirring 70～80 ℃, 2～3h adds whole unsaturated polyester resins, be cooled to again 40～45 ℃, add retarder, stir more than 30min, obtain can normal temperature thickening sheet molding compound resin.
Embodiment 3
Formula: oxalic acid: 200 weight parts, cis-butenedioic anhydride: 1000 weight parts, 1,2-propylene glycol: 550 weight parts, Diethylene Glycol: 650 weight parts, vinylbenzene: 1000 weight parts, triphenyl phosphite: 0.4 weight part, Resorcinol: 0.4 weight part, toluhydroquinone: 1.2 weight parts, Tert. Butyl Hydroquinone: 1.2 weight parts.
The preparation method of this unsaturated polyester resin is:
A) be 2～4m at nitrogen flow
3under the condition of/h, by 1, after mixing, 2-propylene glycol, Diethylene Glycol, 1/2 high temperature stopper, oxalic acid, cis-butenedioic anhydride and oxidation inhibitor is warming up to 75～80 ℃, after insulation reaction 1～1.5h, heat release to 140 ℃, be warming up to 180 ℃ with the speed of 20 ℃/h, then be warming up to 190 ℃ with the speed of 5 ℃/h, be finally warming up to 210 ℃ with the speed of 10 ℃/h;
B) insulation reaction 4.5～5.5 hours under 210 ℃ of conditions, material acid number reaches 68～72mgKOH/g, and nitrogen flow is adjusted to 70～80m
3/ h, reacts to acid number and reaches 32～34mgKOH/g, and nitrogen flow is adjusted to 10～15m
3/ h, cooling, in the time that temperature of charge is down to 180 ℃, adds remaining high temperature stopper, is down to 170～175 ℃ and obtains unsaturated polyester resin;
C) unsaturated polyester resin of obtaining is slowly added in the mixture of vinylbenzene and normal temperature stopper, be cooled to while stirring 70～80 ℃, 2～3h adds whole unsaturated polyester resins, be cooled to again 40～45 ℃, add retarder, stir more than 30min, obtain can normal temperature thickening sheet molding compound resin.
What embodiment 1,2 and 3 prepared can normal temperature thickening sheet molding compound detect with the thickening of resin: (25 ℃ of room temperatures) initial viscosity: 200-400Pa.S, 15 minutes viscosity: 500-800Pa.S, 30 minutes viscosity: 800-1000Pa.S, 60 minutes viscosity: more than 1000Pa.S, 24 hours cone penetrations (25 ℃ of room temperatures): 40-80mm, reaches the desired viscosity of suppressor pressing process.
Prepare material property according to embodiment 1～3 method and detect data as table 1:
Table 1
The present invention is not described in detail conventional production process and process, and detailed concrete grammar and process can be implemented in conjunction with aforementioned production method and ordinary method, and person of ordinary skill in the field can repeat to realize completely.
Claims (8)
1. a sheet molding compound resin that can normal temperature thickening, is characterized in that this resin is mainly made up of the raw material of following weight part:
Oxalic acid 200-300 part, cis-butenedioic anhydride 1000-1200 part, propylene glycol 400-600 part, Diethylene Glycol 600-750 part, vinylbenzene 950-1050 part, oxidation inhibitor 0.2-0.8 part, high temperature stopper 0.2-0.8 part, normal temperature stopper 0.5-1.5 part, retarder 0.5-1.5 part.
2. sheet molding compound resin that can normal temperature thickening according to claim 1, is characterized in that this resin is mainly made up of the raw material of following weight part:
Oxalic acid 250-300 part, cis-butenedioic anhydride 1000-1050 part, propylene glycol 450-550 part, Diethylene Glycol 650-700 part, vinylbenzene 1000-1050 part, oxidation inhibitor 0.4-0.6 part, high temperature stopper 0.4-0.6 part, normal temperature stopper 0.8-1.2 part, retarder 0.8-1.2 part.
3. sheet molding compound resin that can normal temperature thickening according to claim 2, is characterized in that this resin is mainly made up of the raw material of following weight part:
300 parts of oxalic acid, 1000 parts of cis-butenedioic anhydrides, 500 parts of propylene glycol, 680 parts of Diethylene Glycols, 1000 parts of vinylbenzene, 0.5 part, oxidation inhibitor, 0.5 part of high temperature stopper, 1 part of normal temperature stopper, 1 part of retarder.
According to described in claim 1,2 or 3 can normal temperature thickening sheet molding compound resin, it is characterized in that described oxidation inhibitor is triphenyl phosphite.
According to described in claim 1,2 or 3 can normal temperature thickening sheet molding compound resin, it is characterized in that described high temperature stopper is Resorcinol.
According to described in claim 1,2 or 3 can normal temperature thickening sheet molding compound resin, it is characterized in that described normal temperature stopper is toluhydroquinone.
According to described in claim 1,2 or 3 can normal temperature thickening sheet molding compound resin, it is characterized in that described retarder is Tert. Butyl Hydroquinone.
Described in claim 1,2 or 3 can normal temperature thickening the preparation method of resin for sheet molding compound, it is characterized in that the method comprises the following steps:
A) be 2～4m at nitrogen flow
3under the condition of/h, after being mixed, propylene glycol, Diethylene Glycol, 1/2 high temperature stopper, oxalic acid, cis-butenedioic anhydride and oxidation inhibitor is warming up to 75～80 ℃, after insulation reaction 1～1.5h, heat release to 140 ℃, be warming up to 180 ℃ with the speed of 20 ℃/h, be warming up to 190 ℃ with the speed of 5 ℃/h again, be finally warming up to 210 ℃ with the speed of 10 ℃/h;
B) insulation reaction 4.5～5.5 hours under 210 ℃ of conditions, material acid number reaches 68～72mgKOH/g, and nitrogen flow is adjusted to 70～80m
3/ h, reacts to acid number and reaches 32～34mgKOH/g, and nitrogen flow is adjusted to 10～15m
3/ h, cooling, in the time that temperature of charge is down to 180 ℃, adds remaining high temperature stopper, is down to 170～175 ℃ and obtains unsaturated polyester resin;
C) unsaturated polyester resin of obtaining is slowly added in the mixture of vinylbenzene and normal temperature stopper, be cooled to while stirring 70～80 ℃, 2～3h adds whole unsaturated polyester resins, then is cooled to 40～45 ℃, add retarder, more than stirring 30min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104650300A (en) * | 2015-01-31 | 2015-05-27 | 宜兴市兴合树脂有限公司 | Unsaturated polyester resin for radome and method for preparing unsaturated polyester resin for radome |
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| CN102212172A (en) * | 2011-02-17 | 2011-10-12 | 安徽淮河化工股份有限公司 | Resin special for anchoring agent and preparation method thereof |
| CN102181017A (en) * | 2011-04-22 | 2011-09-14 | 常州华科树脂有限公司 | Unsaturated polyester resin for machine-made or hand-pasted plane skylight and preparation method thereof |
| CN102603992A (en) * | 2012-03-08 | 2012-07-25 | 宜兴市兴合树脂有限公司 | Unsaturated polyester resin for pultrusion and preparation method for same |
| CN102585107A (en) * | 2012-03-09 | 2012-07-18 | 宜兴市兴合树脂有限公司 | Unsaturated polyester resin for button and preparation method thereof |
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| CN104650300A (en) * | 2015-01-31 | 2015-05-27 | 宜兴市兴合树脂有限公司 | Unsaturated polyester resin for radome and method for preparing unsaturated polyester resin for radome |
| CN104650300B (en) * | 2015-01-31 | 2017-08-15 | 宜兴市兴合树脂有限公司 | A kind of radome unsaturated polyester resin and preparation method thereof |
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| CN103772622B (en) | 2016-04-27 |
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Effective date of registration: 20240220 Address after: No.68 Xiaohekou, Xiangtou village committee, Zhulin Town, Jintan District, Changzhou City, Jiangsu Province 213200 Patentee after: Changzhou Rixin resin Co.,Ltd. Country or region after: China Address before: 214204 Baihe Village, Xinjie street, Yixing City, Wuxi City, Jiangsu Province Patentee before: YIXING XINGHE RESIN CO.,LTD. Country or region before: China |
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