Outdoor weather resistant SMC (Sheet Molding Compound) material and preparation method thereof

A weather-resistant, outdoor technology, applied in the field of composite insulation materials, can solve the problems of SMC materials such as lack of weather resistance, poor UV stability and hydrolysis stability

CN102757629AActive Publication Date: 2012-10-31WUXI XINHONGTAI ELECTRIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-10-31

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Abstract

The invention relates to an outdoor weather resistant SMC (Sheet Molding Compound) material and a preparation method thereof. The outdoor weather resistant SMC material is prepared by adding a novel weather resistant resin, a weather resistant low-shrinkage agent, a weather resistant color paste and an ultraviolet absorber to a main body structure of the traditional SMC material, improving mold release smoothness by using a special processing additive, adding a filler, an alkali-free glass fiber and other auxiliary raw materials to the main body structure and stirring a mixture by using a special stirring process. The outdoor weather resistant SMC material provided by the invention has the advantages as follows: when original excellent performances of the SMC material are kept, ultraviolet oxidation resistance, hydrolysis resistance and high and low temperature resistance are obviously improved; and when the outdoor weather resistant SMC material is in outdoor use, time of resisting color change and color fading as well as time of resisting weather, crack, pulverization and other damages are both greatly prolonged.
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Description

technical field

[0001] The invention belongs to the technical field of composite insulating materials, relates to a sheet molding compound (SMC), in particular to a weather-resistant SMC material for outdoor use and a preparation method thereof. Background technique

[0002] Sheet molding compound SMC (Sheet Molding Compound) is a resin-based composite material reinforced with glass fiber developed in the 1960s. SMC molding compound has been widely used in various industries such as electrical appliances, instruments, automobile manufacturing, aviation, transportation, construction, etc. due to its excellent mechanical properties, excellent electrical properties, heat resistance, low shrinkage and good processing properties, especially Is the electrical industry. In order to obtain high-performance SMC composite materials, many enterprises and research departments at home and abroad have studied the characteristics of resins and fibers in recent years in order to obtain mat...

Examples

Embodiment 1

[0095] Prepare the weather-resistant SMC material for outdoor use as follows:

[0096] (1) Prepare raw materials according to the following mass percentages: 16.5wt% weather-resistant unsaturated polyester resin, 6wt% weather-resistant low-shrinkage additive, 2wt% weather-resistant color paste, 0.3wt% ultraviolet light absorber, and 0.5wt% process additive , Filling material 55wt%, curing agent 0.4wt%, release agent 0.8wt%, thickener 0.4wt%, antioxidant 0.1wt%, non-alkali continuous filament glass fiber 18wt%;

[0097] The weather-resistant unsaturated polyester resin is a product of Nanjing Jinling DSM Resin Co., Ltd., and the model is P19-901;

[0098] The weather-resistant low-shrinkage additive is a product of Nanjing Jinling DSM Co., Ltd., and the model is H851-02;

[0099] The weather-resistant color paste is a color paste made by mixing and grinding weather-resistant toner and weather-resistant monomer-free unsaturated polyester resin according to a weight ratio of 1:9...

Embodiment 2

[0114] (1) Prepare raw materials according to the following mass percentages: 22wt% weather-resistant unsaturated polyester resin, 4wt% weather-resistant low-shrinkage additive, 4wt% weather-resistant colorant, 0.1wt% ultraviolet light absorber, 1.0wt% process additive, Filling material 52wt%, curing agent 0.2wt%, release agent 1.2wt%, thickener 0.2wt%, antioxidant 0.3wt%, non-alkali continuous filament glass fiber 15wt%;

[0115] The weather-resistant unsaturated polyester resin is a product of Nanjing Jinling DSM Resin Co., Ltd., and the model is P19-901;

[0116] The weather-resistant low-shrinkage additive is a product of Nanjing Jinling DSM Co., Ltd., and the model is H851-02;

[0117] The weather-resistant color paste is a color paste made by mixing and grinding weather-resistant toner and weather-resistant monomer-free unsaturated polyester resin according to a weight ratio of 1:9; the weather-resistant toner is titanium blue, The mixture of Titanium Green, Red 254, an...

Embodiment 3

[0132] (1) Prepare raw materials according to the following mass percentages: 15wt% weather-resistant unsaturated polyester resin, 8wt% weather-resistant low-shrinkage additive, 1wt% weather-resistant colorant, 0.4wt% ultraviolet light absorber, 0.4wt% process additive, Filling material 53.7wt%, curing agent 0.5wt%, release agent 0.5wt%, thickener 0.45wt%, antioxidant 0.05wt%, non-alkali continuous filament glass fiber 20wt%;

[0133] The weather-resistant unsaturated polyester resin is a product of Nanjing Jinling DSM Resin Co., Ltd., and the model is P19-901;

[0134]The weather-resistant low-shrinkage additive is a product of Nanjing Jinling DSM Co., Ltd., and the model is H851-02;

[0135] The weather-resistant color paste is a product of Shanghai Baomeishi Chemical Co., Ltd., and the model is 062-3M0050;

[0136] The ultraviolet absorber is made of nano-sized TiO 2 Composite powder mixed with ZnO at a weight ratio of 2:1 is a product of Nanjing Huali Mingke Industry and...