Manually-pasting molding method of para-position aramid fiber composite material
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A composite material, para-aramid fiber technology, which is applied in the field of preparation of para-aramid fiber composite material parts, can solve the problems of affecting life, low interlaminar shear strength of composite materials, poor adhesion of aramid fiber materials, etc.
Active Publication Date: 2013-04-03
宁夏泰和兴材料科技有限公司
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Problems solved by technology
For example, the performance of para-aramid itself against ultraviolet radiation is relatively poor
Another example is that the bonding between the aramid fiber itself and the resin is not good, resulting in low interlaminar shear strength of the composite material.
These defects will not only affect the overall performance of the composite material, but also greatly affect its service life
[0004] At present, the preparation of para-aramid composite materials is mostly in the research stage, and the reports of real industrial production are rare, and there is no report on the production of para-aramid composite materials by hand lay-up method
Method used
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Embodiment 1
[0087] A hand lay-up method process for flat para-aramid composite parts:
[0088] figure 1 Flowchart of the hand lay-up method. Specifically include the following steps:
[0089] 1. Clean the mold
[0090] A composite mold made of stainless steel is adopted, including a relative female mold and a male mold, and the prepared para-aramid composite material is a rectangular plate-shaped workpiece. The mold is stuck with the residual glue left over from the last demoulding, carefully remove it with a flat shovel without damaging the surface; wash the release agent with water, dry it and set it aside.
[0091] 2. Brushing release agent
[0092] Heat 45 parts of water to 60~70°C, add 5 parts of polyvinyl alcohol (low molecular powder, average molecular weight 16000~20000), keep stirring until completely dissolved, then cool to room temperature, then add 50 parts of ethanol dropwise with stirring to complete Filter to remove particles and impurities. Finally, add 1 part of def...
Embodiment 2
[0121] A hand lay-up method process for cuboid-shaped para-aramid composite parts:
[0122] figure 1 Flowchart of the hand lay-up method. Specifically include the following steps:
[0123] 1. Clean the mold
[0124] A composite mold made of stainless steel is adopted, including a relative female mold and a male mold, and the prepared para-aramid composite material is a rectangular shaped workpiece. The mold is stuck with the residual glue left over from the last demoulding, carefully remove it with a flat shovel without damaging the surface; wash the release agent with water, dry it and set it aside.
[0125] 2. Brushing release agent
[0126] Heat 45 parts of water to 60~70°C, add 5 parts of polyvinyl alcohol (low molecular powder, average molecular weight 16000~20000), keep stirring until completely dissolved, then cool to room temperature, then add 50 parts of ethanol dropwise with stirring to complete Filter to remove particles and impurities. Finally, add 1 part of ...
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Abstract
The invention relates to a manually-pasting molding method of a para-position aramid fiber composite material. The manually-pasting molding method particularly comprises the following steps of: (1) cleaning a mould; (2) coating a de-molding agent on the mould; (3) respectively preparing a resin adhesive for a gel coat layer and resin adhesives for a surface layer and an enhancement layer; (4) manufacturing the gel coat layer; (5) manufacturing the surface layer; (6) manufacturing the enhancement layer; (7) combining the mould and curing a workpiece; (8) de-molding; and (9) carrying out post-treatment on the workpiece. According to the manually-pasting molding method of the para-position aramid fiber composite material, the conventional manually-pasting molding method is improved in the manner of coating the surface layer with an ultraviolet light absorber or ultraviolet-resisting paint, and pre-treating para-position aramid fiber cloth in the enhancement layer. When the manually-pasting molding method is used for producing the para-position aramid fiber composite material, equipment is simple, the investment is less, a production technology is easy to master, and some large-sized para-position aramid fiber composite materials which are not suitable for transportation can be manufactured on site; the para-position aramid fiber composite material workpiece has good ultraviolet-resisting performance; and meanwhile, para-position aramid fibers and resin are good in cohesiveness, and thus the composite material can have various stable and good performance.
Description
technical field [0001] The invention relates to a preparation method of a para-aramid composite material part, in particular to a hand lay-up molding method of a para-aramid composite material part. Background technique [0002] Among the existing high-performance fibers, para-aramid is one of the organic fibers with the best comprehensive performance, and it is one of the three high-performance materials. Para-aramid composite materials are known as the diamond in the crown of the global material. The outstanding performance characteristics of para-aramid are high strength, high modulus and high temperature resistance. It also has properties such as wear resistance, flame retardancy, chemical corrosion resistance, insulation, cut resistance, fatigue resistance, flexibility, and good dimensional stability. Due to the excellent comprehensive performance of para-aramid fiber, its application fields are very wide, involving aerospace, national defense and military industry, tra...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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