CN114085510A - SMC (sheet molding compound) material with high covering rate and high gloss and preparation method thereof - Google Patents
SMC (sheet molding compound) material with high covering rate and high gloss and preparation method thereof Download PDFInfo
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- CN114085510A CN114085510A CN202111653196.0A CN202111653196A CN114085510A CN 114085510 A CN114085510 A CN 114085510A CN 202111653196 A CN202111653196 A CN 202111653196A CN 114085510 A CN114085510 A CN 114085510A
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- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003677 Sheet moulding compound Substances 0.000 title description 33
- 229920005989 resin Polymers 0.000 claims abstract description 67
- 239000011347 resin Substances 0.000 claims abstract description 67
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 26
- 239000003365 glass fiber Substances 0.000 claims abstract description 21
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 17
- IISBACLAFKSPIT-UHFFFAOYSA-N Bisphenol A Natural products C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002562 thickening agent Substances 0.000 claims abstract description 16
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 13
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 11
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 229920006132 styrene block copolymer Polymers 0.000 claims abstract description 8
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 6
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims abstract description 6
- -1 polyethylene Polymers 0.000 claims description 10
- MNZAKDODWSQONA-UHFFFAOYSA-N 1-dibutylphosphorylbutane Chemical compound CCCCP(=O)(CCCC)CCCC MNZAKDODWSQONA-UHFFFAOYSA-N 0.000 claims description 9
- CWPKTBMRVATCBL-UHFFFAOYSA-N 3-[1-[1-[(2-methylphenyl)methyl]piperidin-4-yl]piperidin-4-yl]-1h-benzimidazol-2-one Chemical compound CC1=CC=CC=C1CN1CCC(N2CCC(CC2)N2C(NC3=CC=CC=C32)=O)CC1 CWPKTBMRVATCBL-UHFFFAOYSA-N 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 9
- 229920000573 polyethylene Polymers 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical group [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 description 9
- 238000000465 moulding Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000004040 coloring Methods 0.000 description 4
- 229920006337 unsaturated polyester resin Polymers 0.000 description 4
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229920002633 Kraton (polymer) Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/06—Unsaturated polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
- C08L63/10—Epoxy resins modified by unsaturated compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses an SMC material with high covering rate and high gloss and a preparation method thereof. The SMC material disclosed by the invention comprises the following raw materials: 30-60 parts of m-benzene neopentyl glycol unsaturated resin, 20-30 parts of bisphenol A modified vinyl resin, 20-40 parts of SBS low shrinkage agent, 12-20 parts of saturated resin color paste, 1-2 parts of curing agent, 3-5 parts of auxiliary agent, 120-150 parts of aluminum hydroxide, 40-60 parts of calcium carbonate, 1.2-1.5 parts of thickening agent and 70-90 parts of glass fiber. According to the invention, the high-covering-performance saturated resin color paste, the m-phenyl neopentyl glycol resin, the bisphenol A modified vinyl resin and the SBS styrene block copolymer are utilized, so that the colorability and excellent low shrinkage of the SMC material are effectively improved, and meanwhile, the high covering rate, high corrosion resistance and high gloss of the bathroom material are realized.
Description
Technical Field
The invention belongs to the field of materials, and particularly relates to an SMC material with high coverage rate and high gloss and a preparation method thereof.
Background
Sheet Molding compounds, SMC (sheet Molding compounds), commonly referred to as unsaturated polyester resin sheet Molding compounds in China, are prepared by mixing unsaturated polyester resin, a thickening agent, an initiator, a low-shrinkage additive, a mold release agent, a filler, a saturated resin color paste and the like into a resin paste, then impregnating chopped glass fiber roving or glass chopped strand mat, coating the two surfaces with polyethylene or polypropylene films to form a sandwich-shaped Molding plastic, and then curing for a certain time before Molding. At present, SMC molding technology mainly adopts the technology of molding, solidifying and demolding under the condition of heating and pressurizing to obtain a closed-film molding composite material of a required product. Compared with other materials and forming technologies, SMC material products have the advantages of excellent mechanical property, electrical property, heat resistance and chemical corrosion resistance, stable product quality, short forming period, high efficiency, environmental protection, capability of realizing high flame-retardant requirement and the like, so that research on SMC composite materials with high covering rate, high corrosion resistance and high gloss can produce products meeting the requirements of the bathroom industry to replace ceramic materials, and the SMC composite materials are an important task for improving the industrial development of unsaturated polyester molding compounds.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problems of the prior art, the invention provides an SMC material and a preparation method thereof. The SMC material has high covering rate, high corrosion resistance and high gloss, and can be applied to bathroom materials.
The technical scheme is as follows: the SMC material with high covering rate and high gloss comprises the following raw materials in parts by weight: 30-60 parts of m-benzene neopentyl glycol unsaturated resin, 20-30 parts of bisphenol A modified vinyl resin, 20-40 parts of SBS low shrinkage agent, 12-20 parts of saturated resin color paste, 1-2 parts of curing agent, 3-5 parts of auxiliary agent, 120-150 parts of aluminum hydroxide, 40-60 parts of calcium carbonate, 1.2-1.5 parts of thickening agent and 70-90 parts of glass fiber.
According to the invention, the high-covering-performance saturated resin color paste, the m-phenyl neopentyl glycol resin, the bisphenol A modified vinyl resin and the SBS styrene block copolymer are utilized, so that the colorability and excellent low shrinkage of the SMC material are effectively improved, and the requirements of high covering rate, high corrosion resistance and high gloss of the bathroom material are met.
As a preferred embodiment of the present invention, the SBS low shrinkage agent is SBS styrene block copolymer.
In a preferred embodiment of the present invention, the curing agent is a composite curing agent composed of TBPB and TBPO.
As a preferred embodiment of the present invention, the weight ratio of TBPB to TBPO is 1.1: 0.4.
as a preferred embodiment of the invention, the auxiliary agent is a composite curing agent consisting of BYK-9010 and BYK-9065.
As a preferred embodiment of the invention, the weight ratio of BYK-9010 to BYK-9065 is 1.5: 1.
as a preferred embodiment of the present invention, the thickener is magnesium oxide.
In a preferred embodiment of the present invention, the glass fiber is alkali-free chopped glass having a length of 12.5mm or 25 mm.
As a preferred embodiment of the invention, the preparation raw materials comprise the following components in parts by weight: 40 parts of m-phenyl neopentyl glycol unsaturated resin, 30 parts of bisphenol A modified vinyl resin, 30 parts of SBS low shrinkage agent, 20 parts of saturated resin color paste, 1.2 parts of curing agent, 5 parts of auxiliary agent, 150 parts of aluminum hydroxide, 40 parts of calcium carbonate, 1.3 parts of thickening agent and 80 parts of glass fiber.
The preparation method of the SMC material with high coverage rate and high gloss comprises the following steps:
(1) firstly, mixing and dispersing unsaturated resin, bisphenol A modified vinyl resin, low shrinkage agent SBS, saturated resin color paste, curing agent, auxiliary agent, aluminum hydroxide, calcium carbonate and the like uniformly, and then adding thickening agent and mixing uniformly to obtain resin paste;
(2) uniformly coating the resin paste on two polyethylene films by a sheet machine, uniformly clamping fibers in the middle, soaking and mixing the resin paste and the fibers into a whole by a pressure roller, removing air by a rolling roller, and curing after rolling to obtain the SMC material.
In a preferred embodiment of the present invention, in the step (2), the temperature of the aging is 40 to 50 ℃.
Has the advantages that: (1) the SMC material disclosed by the invention uses the saturated resin color paste with high covering performance, so that the characteristics of high corrosion resistance, high gloss, water absorption resistance, attractive appearance and the like of the SMC composite material can be fundamentally enhanced from the formula, and the problem of surface blooming of the colored material after molding can be promoted to be solved; (2) the invention also uses bisphenol A modified vinyl resin (vinyl polyester resin), integrates the good manufacturability of unsaturated polyester resin and the excellent strength and corrosion resistance of epoxy resin, and can be applied in the bathroom industry, in particular to manufacturing high-strength structures or appearance parts, wherein the physical and mechanical properties such as strength, corrosion resistance and heat resistance are more important in the parts; (3) the invention also uses the low shrinkage control agent SBS elastomer which has higher performance and good compatibility with the unsaturated polyester resin, and due to the structural particularity, the invention not only can play a role of reducing the shrinkage of the SMC material and increase the strength to a certain extent, but also can promote and solve the phenomena of surface blooming, uneven coloring and the like of the color SMC material after molding.
Detailed Description
Test method
1.1 mechanical strength reference standard: GB/T23641 and 2018.
1.2 corrosion resistance test standard: GB 1763 and 1979; pigment hiding test standard: GB/T1709-1979; gloss test standard: GB 8807 & lt 1988 & gt.
Second, sample preparation
Example 1: weighing the following raw materials in parts by weight: 40 parts of m-phenyl neopentyl glycol unsaturated resin, 30 parts of bisphenol A modified vinyl resin, 30 parts of SBS low shrinkage agent (SBS styrene block copolymer, kraton G1726), 20 parts of saturated resin color paste, 1.2 parts of curing agent, 5 parts of auxiliary agent, 150 parts of aluminum hydroxide, 40 parts of calcium carbonate, 1.3 parts of thickening agent and 80 parts of glass fiber.
The m-benzene neopentyl glycol resin, the bisphenol A modified vinyl resin, SBS, the saturated resin color paste, BYK-9010, BYK-9065 (the weight ratio of BYK-9010 to BYK-9065 is 1.5: 1), TBPB, TBPO (the weight ratio of TBPB to TBPO is 1.1: 0.4), aluminum hydroxide powder and calcium carbonate are put into a high-speed shearing mixer according to the formula amount and are fully stirred, the rotating speed is controlled to be 1000rpm, the mixture is stirred for 8 minutes, a magnesium oxide thickening agent is quickly put into the mixture and is stirred for 1 minute at high speed, the mixture is quickly transferred and discharged into two paste storage tanks of an SMC unit, the traveling upper polyethylene film and the traveling lower polyethylene film are uniformly coated with resin paste with the thickness of 1.6mm, the continuous glass fiber is cut into the length of 25mm through a circular cutter group, the chopped glass fiber is uniformly scattered on the lower resin paste, the resin paste and the fiber are soaked and mixed into a whole through a pressure roller, air is removed through a rolling device, an SMC roll is wound, and then the mixture enters a curing chamber at the temperature of 40 ℃ for rapid thickening, and the resin is fully soaked in the glass fiber after 24 hours, thus finishing the preparation of the SMC material with easy coloring, low shrinkage and high flame retardance.
Example 2: weighing the following raw materials in parts by weight: 60 parts of m-phenyl neopentyl glycol unsaturated resin, 20 parts of bisphenol A modified vinyl resin, 30 parts of SBS low shrinkage agent (SBS styrene block copolymer, Keteng 1726), 18 parts of saturated resin color paste, 1.2 parts of curing agent, 5 parts of auxiliary agent, 140 parts of aluminum hydroxide, 60 parts of calcium carbonate, 1.3 parts of thickening agent and 80 parts of glass fiber.
The m-benzene neopentyl glycol resin, the bisphenol A modified vinyl resin, the SBS low shrinkage agent (SBS styrene block copolymer), the saturated resin color paste, BYK-9010, BYK-9065 (the weight ratio of BYK-9010 to BYK-9065 is 1.5: 1), TBPB, TBPO (the weight ratio of TBPB to TBPO is 1.1: 0.4), aluminum hydroxide powder and calcium carbonate are put into a high-speed shearing mixer according to the formula amount and fully stirred, the rotating speed is controlled at 1000rpm and stirred for 8 minutes, the magnesium oxide thickening agent is quickly put into the mixer and then quickly stirred for 1 minute, namely the mixture is quickly transferred and discharged into two paste storage tanks of an SMC unit, the traveling upper polyethylene film and the traveling lower polyethylene film are uniformly coated with resin paste with the thickness of 1.6mm, the continuous glass fiber is cut into the length of 25mm by a circular cutter group, the chopped glass fiber is uniformly scattered on the lower layer of the resin paste, the resin paste and the fiber are soaked and mixed into a whole by a pressure roller, and then air is removed through a rolling roller, an SMC roll is wound through a winding device, then the SMC roll enters a curing chamber at 40 ℃ for rapid thickening, and the resin is fully soaked in the glass fiber after 24 hours, thus the preparation of the SMC material with easy coloring, low shrinkage and high flame retardance is completed.
Example 3: weighing the following raw materials in parts by weight: 30 parts of m-phenyl neopentyl glycol unsaturated resin, 40 parts of bisphenol A modified vinyl resin, 30 parts of SBS low shrinkage agent (SBS styrene block copolymer, Keteng 1726), 15 parts of saturated resin color paste, 1.2 parts of curing agent, 5 parts of auxiliary agent, 140 parts of aluminum hydroxide, 60 parts of calcium carbonate, 1.3 parts of thickening agent and 80 parts of glass fiber.
The m-benzene neopentyl glycol resin, the bisphenol A modified vinyl resin, SBS, the saturated resin color paste, BYK-9010, BYK-9065 (the weight ratio of BYK-9010 to BYK-9065 is 1.5: 1), TBPB, TBPO (the weight ratio of TBPB to TBPO is 1.1: 0.4), aluminum hydroxide powder and calcium carbonate are put into a high-speed shearing mixer according to the formula amount and are fully stirred, the rotating speed is controlled to be 1000rpm, the mixture is stirred for 8 minutes, a magnesium oxide thickening agent is quickly put into the mixture and is stirred for 1 minute at high speed, the mixture is quickly transferred and discharged into two paste storage tanks of an SMC unit, the traveling upper polyethylene film and the traveling lower polyethylene film are uniformly coated with resin paste with the thickness of 1.6mm, the continuous glass fiber is cut into the length of 25mm through a circular cutter group, the chopped glass fiber is uniformly scattered on the lower resin paste, the resin paste and the fiber are soaked and mixed into a whole through a pressure roller, air is removed through a rolling device, an SMC roll is wound, and then the mixture enters a curing chamber at the temperature of 40 ℃ for rapid thickening, and the resin is fully soaked in the glass fiber after 24 hours, thus finishing the preparation of the SMC material with easy coloring, low shrinkage and high flame retardance.
Third, the detection result
| Item | Example 1 | Example 2 | Example 3 |
| Flexural strength/MPa | 130 | 120 | 130 |
| Flexural modulus/MPa | 9500 | 9000 | 95000 |
| Impact strength/Mpa | 55 | 50 | 55 |
| Corrosion resistance | Good effect | Slightly weaker | Good effect |
| Hiding power performance | Good effect | Slightly weaker | Slightly weaker |
| Gloss properties | Good effect | Good effect | Slightly weaker |
Claims (8)
1. The SMC material with high hiding rate and high gloss is characterized by comprising the following raw materials in parts by weight: 30-60 parts of m-benzene neopentyl glycol unsaturated resin, 20-30 parts of bisphenol A modified vinyl resin, 20-40 parts of SBS low shrinkage agent, 12-20 parts of saturated resin color paste, 1-2 parts of curing agent, 3-5 parts of auxiliary agent, 120-150 parts of aluminum hydroxide, 40-60 parts of calcium carbonate, 1.2-1.5 parts of thickening agent and 70-90 parts of glass fiber.
2. An SMC material having high hiding power and high gloss as in claim 1 wherein said SBS low shrinkage agent is SBS styrenic block copolymer.
3. An SMC material with high hiding power and high gloss according to claim 1, wherein the curing agent is a composite curing agent consisting of TBPB and TBPO.
4. An SMC material with high hiding rate and high gloss according to claim 1, characterized in that the assistant is a composite curing agent consisting of BYK-9010 and BYK-9065.
5. An SMC material having a high hiding power and a high gloss as in claim 1, wherein said thickener is magnesium oxide.
6. An SMC material with high hiding power and high gloss according to claim 1, characterized in that the glass fibers are alkali-free chopped glass fibers with a length of 12.5mm or 25 mm.
7. An SMC material with high hiding power and high gloss according to claim 1 characterized in that the raw materials for preparation comprise the following components in parts by weight: 40 parts of m-phenyl neopentyl glycol unsaturated resin, 30 parts of bisphenol A modified vinyl resin, 30 parts of SBS low shrinkage agent, 20 parts of saturated resin color paste, 1.2 parts of curing agent, 5 parts of auxiliary agent, 150 parts of aluminum hydroxide, 40 parts of calcium carbonate, 1.3 parts of thickening agent and 80 parts of glass fiber.
8. A method for preparing SMC material having high hiding power and high gloss as claimed in claim 1, characterized by the steps of:
(1) firstly, mixing and dispersing unsaturated resin, bisphenol A modified vinyl resin, low shrinkage agent SBS, saturated resin color paste, curing agent, auxiliary agent, aluminum hydroxide, calcium carbonate and the like uniformly, and then adding thickening agent and mixing uniformly to obtain resin paste;
(2) uniformly coating the resin paste on two polyethylene films by a sheet machine, uniformly clamping fibers in the middle, soaking and mixing the resin paste and the fibers into a whole by a pressure roller, removing air by a rolling roller, and curing after rolling to obtain the SMC material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111653196.0A CN114085510A (en) | 2021-12-30 | 2021-12-30 | SMC (sheet molding compound) material with high covering rate and high gloss and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111653196.0A CN114085510A (en) | 2021-12-30 | 2021-12-30 | SMC (sheet molding compound) material with high covering rate and high gloss and preparation method thereof |
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| CN114085510A true CN114085510A (en) | 2022-02-25 |
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| CN202111653196.0A Pending CN114085510A (en) | 2021-12-30 | 2021-12-30 | SMC (sheet molding compound) material with high covering rate and high gloss and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115678305A (en) * | 2022-10-28 | 2023-02-03 | 泰州高意诚复合材料有限公司 | HF acid corrosion resistant special anti-corrosion SMC material |
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| US20060154000A1 (en) * | 2005-01-12 | 2006-07-13 | Thyssenkrupp Budd Company | Powder primeable low moisture SMC |
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| US20190031817A1 (en) * | 2016-04-06 | 2019-01-31 | Mitsubishi Chemical Corporation | Thermosetting resin composition, sheet-molding compound and production method therefor, and fiber-reinforced composite material |
| CN109880332A (en) * | 2019-02-14 | 2019-06-14 | 常州天马集团有限公司（原建材二五三厂） | A kind of high fire-retardance, high-intensitive environmental type sheet molding compound and preparation method thereof |
| CN110951227A (en) * | 2019-12-23 | 2020-04-03 | 无锡新宏泰电器科技股份有限公司 | SMC polyester molding compound and preparation method and application thereof |
-
2021
- 2021-12-30 CN CN202111653196.0A patent/CN114085510A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060154000A1 (en) * | 2005-01-12 | 2006-07-13 | Thyssenkrupp Budd Company | Powder primeable low moisture SMC |
| US20190031817A1 (en) * | 2016-04-06 | 2019-01-31 | Mitsubishi Chemical Corporation | Thermosetting resin composition, sheet-molding compound and production method therefor, and fiber-reinforced composite material |
| CN108559230A (en) * | 2018-05-28 | 2018-09-21 | 江苏兆鋆新材料股份有限公司 | Applied to easy coloring lower shrinkage, the high fire-retardance SMC material and preparation method thereof in new energy car battery box |
| CN109880332A (en) * | 2019-02-14 | 2019-06-14 | 常州天马集团有限公司（原建材二五三厂） | A kind of high fire-retardance, high-intensitive environmental type sheet molding compound and preparation method thereof |
| CN110951227A (en) * | 2019-12-23 | 2020-04-03 | 无锡新宏泰电器科技股份有限公司 | SMC polyester molding compound and preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115678305A (en) * | 2022-10-28 | 2023-02-03 | 泰州高意诚复合材料有限公司 | HF acid corrosion resistant special anti-corrosion SMC material |
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Application publication date: 20220225 |