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Vacuum introduction processing method for weather-resistant FRP products

A vacuum introduction and processing method technology, applied in the processing field of FRP products, can solve the problems of FRP products pulverization, shortened service life, poor weather resistance, etc., and achieve the effects of improved adhesion, extended service life, and uniform resin distribution

Active Publication Date: 2019-06-07
CHONGQING HAIQING NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, FRP products are mostly used outdoors, such as the wind turbine cabin cover made of FRP, because they are often exposed to various environments such as sunlight, wind and rain, high temperature, severe cold, etc., as time goes by, the weather resistance is poor. FRP products are prone to powdering, discoloration, aging and other phenomena, which greatly shorten the service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] In this embodiment, the preparation method of the gel coat resin includes the following steps: adding aluminum hydroxide, light calcium carbonate, zinc oxide, titanium dioxide, dialkyl di Zinc thiosulfate, fumed silica, and then add the mixture of styrene and chlorosulfonated polyethylene, after mixing evenly, add polydimethylsiloxane, amine diketone, ultraviolet absorber, antioxidant Agent 1010, antioxidant 168, cobalt isooctanoate and methyl ethyl ketone peroxide, and stir evenly to obtain gel coat resin.

[0037] In this embodiment, the ultraviolet absorber is UVP-327, and its composition is 2-(2'-hydroxyl-3', 5'-di-tert-phenyl)-5-chlorinated benzotriazole; Ester resin has good compatibility, good chemical stability, minimal volatility, excellent heat sublimation resistance, washing resistance, gas fading resistance and mechanical property retention; and it is used together with antioxidant 1010 and antioxidant 168 have a significant synergistic effect.

[0038] In...

Embodiment 1

[0046] a Prepare the mold: clean the mold and apply a release agent for use;

[0047] b spraying the gel coat layer: prepare the gel coat resin, then spray the gel coat resin onto the mold obtained in step a, the spray thickness is 0.4mm, and let stand at room temperature until the gel coat resin solidifies;

[0048] Gel coat resin raw materials include the following components by weight: 100 parts of o-phthalic unsaturated polyester resin, 10 parts of chlorosulfonated polyethylene, 2 parts of polydimethylsiloxane, 1 part of fumed silica, zinc oxide 5 parts, 1 part of aluminum hydroxide, 6 parts of light calcium carbonate, 1 part of titanium dioxide, 20 parts of styrene, 0.1 part of cobalt isooctanoate, 3 parts of methyl ethyl ketone peroxide, 1 part of amino diketone, ultraviolet absorber 0.5 part of UVP-327, 0.2 part of antioxidant 1010, 0.1 part of antioxidant 168, 0.2 part of zinc dialkyldithiosulfate;

[0049] The preparation steps of gel coat resin are as follows:

[0...

Embodiment 2

[0060] a Prepare the mold: clean the mold and apply a release agent for use;

[0061] b spraying the gel coat layer: prepare the gel coat resin, then spray the gel coat resin onto the mold obtained in step a, the spraying thickness is 0.5mm, and let stand at room temperature until the gel coat resin solidifies;

[0062] Gel coat resin raw materials include the following components by weight: 100 parts of o-phthalic unsaturated polyester resin, 20 parts of chlorosulfonated polyethylene, 5 parts of polydimethylsiloxane, 5 parts of fumed silica, zinc oxide 7 parts, 5 parts of aluminum hydroxide, 8 parts of light calcium carbonate, 2 parts of titanium dioxide, 25 parts of styrene, 0.3 parts of cobalt isooctanoate, 5 parts of methyl ethyl ketone peroxide, 3 parts of amino diketone, ultraviolet absorber 1 part of UVP-327, 0.3 part of antioxidant 1010, 0.2 part of antioxidant 168, 0.3 part of zinc dialkyldithiosulfate;

[0063] The preparation steps of gel coat resin are as follows:...

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Abstract

The invention provides a vacuum infusion machining method for weather-resistant fiberglass reinforced plastics (FRP) products. The method comprises the steps of preparing a mould - applying gel coat - laying at least three layers of fiberglass - laying an isolating membrane with holes - laying and arranging guide pipes - laying a guide net - laying a vacuum bag - vacuum pumping - resin leading-in - demoulding; the laying sequence of the guide pipes and the guide net in the traditional vacuum infusion machining method is changed, and the inside surfaces of the FRP products prepared are free of pipe pressure traces; the gel coat resin prepared is made of raw material constituents which are excellent in performance and able to coordinate with each other, and the gel coat prepared is excellent in weatherability and able to prevent early aging of the FRP products in high temperature, severe cold or other environments; the basic resin in the invention is able to infiltrate the fiberglass properly, and the FRP products prepared finally is high in quality and stability, excellent in weatherability, and applicable for outdoor use.

Description

technical field [0001] The invention relates to a processing method of FRP products, in particular to a vacuum introduction processing method of weather-resistant FRP products. Background technique [0002] FRP products are a composite material that has developed rapidly in the past 50 years. my country has widely used FRP to manufacture various small motorboats, lifeboats, yachts, wind turbine cabin covers and automobile manufacturing industries, saving a lot of steel. Due to the excellent performance of FRP products and a wide range of applications, its market development prospects are very broad. [0003] At present, FRP products are mostly used outdoors, such as the wind turbine cabin cover made of FRP, because they are often exposed to various environments such as sunlight, wind and rain, high temperature, severe cold, etc., as time goes by, the weather resistance is poor. FRP products are prone to powdering, discoloration, aging and other phenomena, which greatly sho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/44B29C70/54B29B15/00B29K67/00
CPCB29B15/00B29C70/44B29C70/54B29K2067/06
Inventor 梁如高李光彬周胜华
Owner CHONGQING HAIQING NEW MATERIAL
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