CN114410011A - Low-density SMC material with high paint spraying and adhesive force - Google Patents
Low-density SMC material with high paint spraying and adhesive force Download PDFInfo
- Publication number
- CN114410011A CN114410011A CN202111429397.2A CN202111429397A CN114410011A CN 114410011 A CN114410011 A CN 114410011A CN 202111429397 A CN202111429397 A CN 202111429397A CN 114410011 A CN114410011 A CN 114410011A
- Authority
- CN
- China
- Prior art keywords
- parts
- polypropylene
- smc
- smc material
- agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a low-density SMC material with high paint spraying and adhesive force, which comprises the following raw materials in parts by weight: 30-40 parts of SMC special yarn, 50-60 parts of polypropylene, 2-4 parts of oxidant, 10-16 parts of glass fiber, 5-8 parts of polyurethane, 10-28 parts of unsaturated resin, 0.5-0.8 part of antioxidant, 3-6 parts of ultraviolet absorbent and 2-4 parts of other auxiliary agents.
Description
Technical Field
The invention relates to the technical field of SMC (sheet molding compound) materials, in particular to a low-density SMC material with high paint spraying and adhesive force.
Background
The SMC composite material has been receiving attention because of its electrical insulating property, and thus has a wide range of applications, such as in various fields of electricity, electronics, architecture, aviation, chemical engineering, etc., and because it is not affected by electromagnetic waves, it has a good insulating property, so it is the most advanced and widely popularized casing manufacturing material in the world, and no matter the properties of other metal materials or non-metal materials, it can not compare favourably with the properties of SMC composite material in similar fields.
However, the conventional SMC materials have some disadvantages in use, such as:
the conventional SMC of the existing product has the density of 1.8-1.9g/cm3, the painting problem is good, but the automobile needs to be light and needs to reduce the specific gravity to about 1.5, but the conventional scheme uses glass beads, the painting adhesion force is not good, or the painting is poor after the surface of the product is polished.
Disclosure of Invention
The present invention is directed to a low-density SMC material with high paint spraying adhesion to solve the above problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the material comprises the following raw materials in parts by weight: 30-40 parts of SMC special yarn, 50-60 parts of polypropylene, 2-4 parts of oxidant, 10-16 parts of glass fiber, 5-8 parts of polyurethane, 10-28 parts of unsaturated resin, 0.5-0.8 part of antioxidant, 3-6 parts of ultraviolet absorbent and 2-4 parts of other auxiliary agents.
Wherein the polypropylene is high-crystalline co-polypropylene.
Wherein the other auxiliary agents comprise a coupling agent, a dispersing agent and a toughening agent.
Wherein the coupling agent is a reaction type coupling agent containing styryl, the dispersing agent is glyceryl tristearate, and the toughening agent is an ethylene-propylene copolymer.
Wherein the coupling agent is a reaction type coupling agent containing styryl, the dispersing agent is glyceryl tristearate, and the toughening agent is an ethylene-propylene copolymer.
The special yarn for SMC comprises 30 parts of special yarn for SMC, 50 parts of polypropylene, 2 parts of oxidant, 10 parts of glass fiber, 5 parts of polyurethane, 10 parts of unsaturated resin, 0.5 part of antioxidant, 3 parts of ultraviolet absorbent and 2 parts of other auxiliary agents.
The special yarn for SMC comprises 35 parts of special yarn for SMC, 55 parts of polypropylene, 3 parts of oxidant, 13 parts of glass fiber, 7 parts of polyurethane, 19 parts of unsaturated resin, 0.7 part of antioxidant, 5 parts of ultraviolet absorbent and 3 parts of other auxiliary agents.
40 parts of SMC special yarn, 60 parts of polypropylene, 4 parts of oxidant, 16 parts of glass fiber, 8 parts of polyurethane, 28 parts of unsaturated resin, 0.8 part of antioxidant, 6 parts of ultraviolet absorbent and 4 parts of other auxiliary agents.
Wherein the mass ratio of the coupling agent to the dispersing agent to the toughening agent is 1:1: 1.5.
Compared with the prior art, the invention has the beneficial effects that:
1. the plastic elastomer is prepared from yarns special for SMC, polypropylene, an oxidant, glass fibers, polyurethane, unsaturated resin, an antioxidant, an ultraviolet absorbent and other auxiliaries, the volume is increased through expansion with heat and contraction with cold, so that the density is reduced, meanwhile, the interface of the plastic elastomer is treated, the coating property of the material is improved, the surface paint is improved, and the adhesive force of paint on the surface of the material is further enhanced.
2. The material can be uniformly split in phase after being cured by adding polyurethane, the shrinkage control of resin curing can reach the highest degree, the colorability of the material body can be improved by blending the polyurethane and the polypropylene, so that the paint adhesion is further improved, the mechanical strength and the heat resistance of the material can be improved by blending the glass fiber and the polypropylene, and the light aging resistance of the material can be improved by adding an ultraviolet absorbent.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1, the present invention provides a technical solution: a low-density SMC material with high paint spraying and adhesive force comprises the following raw materials in parts by weight: 30 parts of SMC special yarn, 50 parts of polypropylene, 2 parts of oxidant, 10 parts of glass fiber, 5 parts of polyurethane, 10 parts of unsaturated resin, 0.5 part of antioxidant, 3 parts of ultraviolet absorbent and 2 parts of other auxiliary agents.
Wherein the polypropylene is high-crystalline co-polypropylene, and the high-crystalline co-polypropylene has high rigidity and high heat resistance.
The other auxiliary agents comprise a coupling agent, a dispersing agent and a toughening agent, the coupling agent can reduce the viscosity of a synthetic resin melt in the plastic processing process, the dispersity of the filler is improved to improve the processing performance, the product can further obtain good surface quality and mechanical, thermal and electrical properties, the dispersing agent can improve the dispersing performance of solid or liquid materials, and the toughening agent is a substance capable of increasing the flexibility of an adhesive film layer.
Wherein the coupling agent is a reaction type coupling agent containing styryl, the dispersing agent is glyceryl tristearate, and the toughening agent is an ethylene-propylene copolymer.
Wherein the mass ratio of the coupling agent to the dispersing agent to the toughening agent is 1:1: 1.5.
Example 2, the raw materials in the following parts ratio: 35 parts of SMC special yarn, 55 parts of polypropylene, 3 parts of oxidant, 13 parts of glass fiber, 7 parts of polyurethane, 19 parts of unsaturated resin, 0.7 part of antioxidant, 5 parts of ultraviolet absorbent and 3 parts of other auxiliary agents.
Wherein the polypropylene is high-crystalline co-polypropylene, and the high-crystalline co-polypropylene has high rigidity and high heat resistance.
The other auxiliary agents comprise a coupling agent, a dispersing agent and a toughening agent, the coupling agent can reduce the viscosity of a synthetic resin melt in the plastic processing process, the dispersity of the filler is improved to improve the processing performance, the product can further obtain good surface quality and mechanical, thermal and electrical properties, the dispersing agent can improve the dispersing performance of solid or liquid materials, and the toughening agent is a substance capable of increasing the flexibility of an adhesive film layer.
Wherein the coupling agent is a reaction type coupling agent containing styryl, the dispersing agent is glyceryl tristearate, and the toughening agent is an ethylene-propylene copolymer.
Wherein the mass ratio of the coupling agent to the dispersing agent to the toughening agent is 1:1: 1.5.
Example 3, the composition comprises the following raw materials in parts by weight: 40 parts of SMC special yarn, 60 parts of polypropylene, 4 parts of oxidant, 16 parts of glass fiber, 8 parts of polyurethane, 28 parts of unsaturated resin, 0.8 part of antioxidant, 6 parts of ultraviolet absorbent and 4 parts of other auxiliary agents.
Wherein the polypropylene is high-crystalline co-polypropylene, and the high-crystalline co-polypropylene has high rigidity and high heat resistance.
The other auxiliary agents comprise a coupling agent, a dispersing agent and a toughening agent, the coupling agent can reduce the viscosity of a synthetic resin melt in the plastic processing process, the dispersity of the filler is improved to improve the processing performance, the product can further obtain good surface quality and mechanical, thermal and electrical properties, the dispersing agent can improve the dispersing performance of solid or liquid materials, and the toughening agent is a substance capable of increasing the flexibility of an adhesive film layer.
Wherein the coupling agent is a reaction type coupling agent containing styryl, the dispersing agent is glyceryl tristearate, and the toughening agent is an ethylene-propylene copolymer.
Wherein the mass ratio of the coupling agent to the dispersing agent to the toughening agent is 1:1: 1.5.
Experimental example: the SMC material prepared in example 1 was used as test group 1, the SMC material prepared in example 2 was used as test group 2, the SMC material prepared in example 3 was used as test group 3, the SMC materials prepared in examples 1-3 were wiped with alcohol and then purged with high pressure air, the primer, the color paint and the clear paint were sprayed, and the sprayed parts were subjected to peel strength as shown in the following Table, wherein the peel strength was tested according to GB/T2790-.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A low-density SMC material with high paint spraying and adhesive force is characterized by comprising the following raw materials in parts by weight: 30-40 parts of SMC special yarn, 50-60 parts of polypropylene, 2-4 parts of oxidant, 10-16 parts of glass fiber, 5-8 parts of polyurethane, 10-28 parts of unsaturated resin, 0.5-0.8 part of antioxidant, 3-6 parts of ultraviolet absorbent and 2-4 parts of other auxiliary agents.
2. A paintable, high adhesion, low density SMC material as in claim 1 wherein: the polypropylene is high-crystalline co-polypropylene.
3. A paintable, high adhesion, low density SMC material as in claim 1 wherein: the other auxiliary agents comprise a coupling agent, a dispersing agent and a toughening agent.
4. A paintable, high adhesion, low density SMC material as in claim 1 wherein: the coupling agent is a reaction type coupling agent containing styryl, the dispersing agent is glyceryl tristearate, and the toughening agent is an ethylene-propylene copolymer.
5. A paintable, high adhesion, low density SMC material as in claim 1 wherein: 30 parts of SMC special yarn, 50 parts of polypropylene, 2 parts of oxidant, 10 parts of glass fiber, 5 parts of polyurethane, 10 parts of unsaturated resin, 0.5 part of antioxidant, 3 parts of ultraviolet absorbent and 2 parts of other auxiliary agents.
6. A paintable, high adhesion, low density SMC material as in claim 1 wherein: 35 parts of SMC special yarn, 55 parts of polypropylene, 3 parts of oxidant, 13 parts of glass fiber, 7 parts of polyurethane, 19 parts of unsaturated resin, 0.7 part of antioxidant, 5 parts of ultraviolet absorbent and 3 parts of other auxiliary agents.
7. A paintable, high adhesion, low density SMC material as in claim 1 wherein: 40 parts of SMC special yarn, 60 parts of polypropylene, 4 parts of oxidant, 16 parts of glass fiber, 8 parts of polyurethane, 28 parts of unsaturated resin, 0.8 part of antioxidant, 6 parts of ultraviolet absorbent and 4 parts of other auxiliary agents.
8. A sprayable high adhesion, low density SMC material of claim 4, wherein: the mass ratio of the coupling agent to the dispersing agent to the toughening agent is 1:1: 1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429397.2A CN114410011A (en) | 2021-11-29 | 2021-11-29 | Low-density SMC material with high paint spraying and adhesive force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429397.2A CN114410011A (en) | 2021-11-29 | 2021-11-29 | Low-density SMC material with high paint spraying and adhesive force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114410011A true CN114410011A (en) | 2022-04-29 |
Family
ID=81265829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111429397.2A Pending CN114410011A (en) | 2021-11-29 | 2021-11-29 | Low-density SMC material with high paint spraying and adhesive force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114410011A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5326822A (en) * | 1991-07-27 | 1994-07-05 | Basf Aktiengesellschaft | Heat-curable molding material |
| CN101717548A (en) * | 2009-11-06 | 2010-06-02 | 金发科技股份有限公司 | High-polarity polypropylene material and application thereof as inner and outer decorative parts of automobile |
-
2021
- 2021-11-29 CN CN202111429397.2A patent/CN114410011A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5326822A (en) * | 1991-07-27 | 1994-07-05 | Basf Aktiengesellschaft | Heat-curable molding material |
| CN101717548A (en) * | 2009-11-06 | 2010-06-02 | 金发科技股份有限公司 | High-polarity polypropylene material and application thereof as inner and outer decorative parts of automobile |
Non-Patent Citations (1)
| Title |
|---|
| 罗河胜: "塑料材料手册", vol. 3, 广东科技出版社, pages: 336 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1123546A (en) | Primer composition | |
| US4112179A (en) | Method of coating with ablative heat shield materials | |
| CN1330680C (en) | Resin composition, transfer material and process for producing shaped item | |
| JP2016078451A (en) | Method for producing fiber-reinforced composite material, resin base and preform | |
| CN109796706B (en) | Polydopamine modified fluorine-containing resin mixture and prepreg and copper-clad plate prepared from same | |
| KR20170096881A (en) | Anti-static silicone tight-release coating film | |
| CN113372686A (en) | Glass fiber resin composite material and preparation method thereof | |
| JP2024038254A (en) | Antistatic silicone release film | |
| KR102166082B1 (en) | Anti-static silicone release film | |
| CN114410011A (en) | Low-density SMC material with high paint spraying and adhesive force | |
| CN107216473B (en) | Method for improving surface coating performance of carbon fiber reinforced composite material based on dopamine | |
| CN116426192B (en) | Low temperature curing powder coating compositions | |
| CN111154433B (en) | Fluorine-containing resin mixture and copper-clad plate prepared from same | |
| CN115260881B (en) | Low-temperature curing polyester type powder coating and preparation method thereof | |
| CN112048057A (en) | Epoxy resin, application and high-leveling ultralow-temperature curing type pure powder coating | |
| US3657380A (en) | High temperature resistant coating composition of an aromatic polyamide and an epoxy resin | |
| CN114379188A (en) | Preparation method of low-dielectric low-loss polyolefin copper-clad plate | |
| CN110079563B (en) | A kind of low gloss powder coating polyester resin | |
| CN112724803A (en) | Plane powder coating composition and coating thereof | |
| CN112063208A (en) | Hydrophobic coating composition and preparation method and product thereof | |
| CN107502236B (en) | Water-based PP (polypropylene) adhesive and preparation method thereof | |
| CN117410012B (en) | Environment-friendly single-sided conductive foam and preparation process thereof | |
| CN106433501A (en) | Adhesive remaining prevention protection adhesive tape | |
| TWI745679B (en) | High-curve composite coating system forming method | |
| CN110358415B (en) | Aviation transparent part conducting film free of bottom coating and protective coating and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |