CN101886735B - Fiber reinforced thermoplastics composite material section bar and molding technology - Google Patents
Fiber reinforced thermoplastics composite material section bar and molding technology Download PDFInfo
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- CN101886735B CN101886735B CN 200910015320 CN200910015320A CN101886735B CN 101886735 B CN101886735 B CN 101886735B CN 200910015320 CN200910015320 CN 200910015320 CN 200910015320 A CN200910015320 A CN 200910015320A CN 101886735 B CN101886735 B CN 101886735B
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Abstract
The invention discloses a fiber reinforced thermoplastics composite material section bar relating to a new molding technology for producing continuous fiber thermoplastics composite material section bar. Glass fiber yarn, fiber glass cloth and a glass fiber mat form a fiber preimpregnating board in a fiber laying and weaving area (1) by a beam concentration weaving device. The fiber preimpregnating board which is in beam concentration weaving forms a composite blank board after fully rolled and infiltrated by a material pressing roller in a constant-temperature gum dipping slot. The composite blank plate is successively subject to pressure preforming (3) and pressure forming (4), is cooled by a cooling device to form continuous finished product section bar and is cut into required finished product section bar by a board shearing device. The product of the invention can automatically determine material and proportioning according to different requirements of the product, and burdening degree of freedom is high; in the molding process, the product of the invention has extra low abrasion degree on fiber, and all glass fiber in the product is continuous filament; according to different using requirements, the fiber is laid to be designed and adjusted to ensure that the final finished product has excellent mechanical property and appearance; and the product has smaller abrasion on molding equipment and is easier to recycle and reuse the recycled scrap.
Description
Technical field
The present invention relates to a kind of production continuous fiber thermoplastics composite material section bar forming technique.
Background technique
Making at present continuous fiber reinforced thermoplastic composite material section bar product mainly is to adopt pultrude process, pultrusion can be described as topnotch automation and the most suitable quantity-produced technology in the composite material machining machine, so long as the fixing workpiece of sectional shape, mode that almost all can pultrusion is processed.But this technique is subject to the restriction of following shortcoming, and is poor in the melt temperature current downflow such as the melt viscosity height, and mold temperature is high, needs accurately control cooling, and it is solid-state that matrix at room temperature is, and shrinkage is large during melt cooling, and the quality of product fluctuation is large etc.
In addition, pultrude process is for producing the larger product of cross-sectional width, and during such as production sheet material series products, shown above-mentioned shortcoming is more obvious.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of production continuous fiber reinforced thermoplastic composite material section bar and forming process, can simply directly prepare the section bar with constant cross-section shape.Especially for the product with wider cross section that adopts pultrude process to produce, have more obvious advantage such as the sheet material series products.
The technical solution adopted for the present invention to solve the technical problems is that glass fiber yarn, glass fiber cloth, glass fiber mat are formed the fiber prepreg material by the boundling knitting apparatus in fiber placement knitting zone (1).The woven fiber prepreg material of boundling forms composite blank after the abundant roll-in of material pressing roller infiltrates in the constant temperature steeping vat.Composite blank forms continuous finished section bar successively by pressure pre-shaping (3), pressure forming (4) after the cooling unit cooling, finally by crossing the finished section bar that cutting device is cut into to be needed.
Indication raw material components of the present invention and weight proportion are: polyester resin 50～65%, glass fibre 28～35%, silane type coupling agent particle 0.5～2.0%, span acid imide 0.5%～1%, ultraviolet light absorber 0.05～0.1%, antioxidant 1～2%, filler 5～8%, and its moulding process comprises:
1, resin material melting premix: put into resin premixed device after the resin that drying is good, additive, ultraviolet light absorber, antioxidant, filler etc. mix in proportion and carry out the melting premix.The melting feed liquid that mixes is transported in the constant temperature steeping vat through feeding device, and keeps constant temperature steeping vat temperature in 180 ℃～200 ℃ scopes, makes the resin feed liquid remain on molten state, so that the dipping of fiber prepreg material.
2, fiber prepreg material preparation: glass fiber yarn, cloth, felt become the fiber prepreg by boundling knitting apparatus braiding lay after treatment.According to the required mechanical property requirements of section bar of preparation, by the boundling knitting apparatus lay, fiber layer thickness, the fibre content of fiber are adjusted.
3, the pressure profit is soaked: will weave the good fiber prepreg material of lay and enter in the constant temperature steeping vat by the guide wheel guiding, and remove unnecessary glue by spreading roller and form blank behind material pressing roller roll-in dipping (2).
4, blank finishing and temperature regulation: the blank of making is by auxiliary traction/precompressed/trimming apparatus, after temperature sensing carries out temperature detection, by temperature-adjusting device blank is carried out temperature regulation, keep blank temperature to keep the blanket temperature in 120 ℃～150 ℃ scopes.
5, polyester film lay: regulate the blank trim, by the polyester film laying device in the blank both sides each lay one deck polyester film.
6, pre-shaping: the blanket of the good polyester film of lay maintains the temperature in 120 ℃～130 ℃ scopes, is dull and stereotyped through the preliminary roll-forming of pre-shaping pressure roller.At pre-shaping (3) intermediate section section bar is carried out temperature regulation and stress elimination, the sheet material temperature is remained in 100 ℃～110 ℃ scopes, and eliminate part sheet material stress.
7, moulding: the preformed sheet material of process is finished product sheet material at pressure forming cooling zone (4) final cooling forming.Keep preformed sheet material temperature in 80 ℃～90 ℃ scopes, adopt the pressure forming roll-in system identical with sheet material demand sectional shape, and final molding.According to the difference of required section bar, change difform pressure forming roller, have the section bar of constant cross-section with preparation, such as section bars such as L-type, round, I shapes, and flat board, corrugated sheet, trapezoidal plate and surface have the sheet material of ornamental decorative pattern.
8, cooling and shaping: the section bar of hygrosensor after to moulding carries out temperature detection, and the section bar of control cooling unit after to moulding carries out cooling and shaping.
9, film reclaims: the polyester film of recovery reclaims by the polyester film recovering device.
10, finished product is cut out: cooled section bar is cut out the finished section bar that forms the Len req size through after the finishing of traction/side cut/trimming apparatus by cutting device.
The invention has the beneficial effects as follows that product can be according to the different needs of goods, determine voluntarily raw material and proportioning, the batching degrees of freedom is high; The degree of wear to fiber in the forming process is extremely low, and glass fibre all is continuous fiber in the goods, and can be according to requirements different, and fiber placement is designed adjusting, makes end article have extremely good mechanical property and outward appearance; To the forming equipment wearing and tearing still less; The recycling of waste material is reclaimed in easier realization.
Description of drawings
Below in conjunction with drawings and Examples to further detailed explanation of the present invention.
Fig. 1 is flow sheet of the present invention.
Finished product is cut out in 1 collection of filaments lay braiding among the figure, 2 pressure infiltrated with molten metal, 3 roll-in pre-shaping, 4 pressure formings cooling, 5.
Embodiment
To produce 1000kg glass fiber reinforced polypropylene resin flat sheet as example, its raw material components proportioning is: acrylic resin 60%, glass fibre 30%, silane type coupling agent particle 2%, span acid imide 0.8%, ultraviolet light absorber 0.1%, antioxidant 1%, filler 8%; Concrete technology comprises:
1, resin material melting premix: put into resin premixed device after at first will mixing according to a certain percentage through acrylic resin 600kg, silane type coupling agent particle 20kg, span acid imide 8kg, ultraviolet light absorber 1kg, antioxidant 10kg, the filler 80kg of super-dry by said ratio and carry out the melting premix.The melting feed liquid that mixes is transported in the constant temperature steeping vat through feeding device, and keeps constant temperature steeping vat temperature about 190 ± 5 ℃, makes the resin feed liquid remain on molten state, so that the dipping of fibre preforms plate.
Constant temperature steeping vat temperature is made corresponding change according to selected resin material is different, both need make resin mixture remain on molten state, need guarantee that also temperature can not be too high and make resin aging, affects end properties.
2, fiber prepreg plate preparation: pretreated glass fiber yarn, glass fiber cloth, glass fiber mat are total to 300kg, become the continuous fiber pre-impregnated sheet by boundling knitting apparatus (1) by pre-design requirement braiding lay.According to the required mechanical property requirements of sheet material of preparation, by the boundling knitting apparatus lay, fiber layer thickness, the fibre content of fiber are adjusted.
3, pressure infiltrates: the good fiber prepreg plate of braiding lay enters the constant temperature steeping vat by guide wheel, but forms blanket except unnecessary glue by spreading roller after material pressing roller pressure infiltrates (2).
4, blanket finishing and temperature regulation: the blanket of making is by auxiliary traction/precompressed/trimming apparatus, and hauling speed is 1m/min.The hauling speed conditions such as density of arranging according to polyester resin kind, glass fibre pre-impregnated sheet thickness, glass fibre are regulated setting.After precompressed, trimmed sized glass fibres blanket carry out temperature detection by temperature detection device, by temperature-adjusting device blanket is carried out temperature regulation, keep the blanket temperature about 140 ± 5 ℃.
5, polyester film lay: regulate the blanket trim by the polyester film laying device in the blanket both sides each lay one deck polyester film.Avoid acrylic resin in follow-up working process, to be bonded on the pressure roller.
6, pre-shaping: the blanket of the good polyester film of lay maintains the temperature at about 125 ± 5 ℃, tentatively is rolled into flat board through the pre-shaping pressure roller.For the sheet material of section form complexity, last can be replaced with the forming roll close with the sheet material sectional shape to pony press and carry out preliminary moulding roll-in.Be provided with temperature detection device and temperature-adjusting device at pre-forming area (3) intermediate section, sheet material is carried out temperature regulation, the sheet material temperature is remained on about 105 ± 5 ℃, and eliminate part sheet material stress.
7, moulding: the preformed sheet material of process is finished product sheet material at pressure forming cooling zone (4) final cooling forming.Keep preformed sheet material temperature about 85 ± 5 ℃, adopt the pressure forming roll-in system identical with sheet material demand sectional shape, and final molding.According to the difference of required sheet material, change difform pressure forming roller and can prepare sheet material or the dapple dalle of surperficial tool that has consecutive identical cross section such as corrugated, rectangle, trapezoidal etc.
8, cooling and shaping: hygrosensor carries out temperature detection to sheet forming, and the control cooling unit carries out cooling down to sheet forming, finished product typing after sheet material cools off fully.During cooling, need to determine cooling rate according to conditions such as resin kind, sheet metal thickness, finished product shrinkages, in order to avoid affect finished product outward appearance, size.
9, film reclaims: the polyester film of finished product sheet material both sides, carry out recycling by the polyester film recovering device.
10, finished product is cut out: after the finishing of traction/side cut/trimming apparatus of cooled sheet material process, and the finished product sheet material of formation Len req size under the cutting out of plate clipping device (5).
Claims (2)
1. a fiber reinforced thermoplastics composite material section bar forms fiber prepreg plate by the boundling knitting apparatus in fiber placement knitting zone (1) with glass fiber yarn, glass fiber cloth, glass fiber mat; The woven fiber prepreg plate of boundling is in the constant temperature steeping vat, after infiltrating, the full and uniform pressure of material pressing roller forms compound blanket, compound blanket is successively by pressure pre-shaping (3), pressure forming (4), after the cooling unit cooling, form continuous finished section bar, finally by crossing the finished section bar that plate clipping device is cut into to be needed, it is characterized in that raw material components and weight proportion are: polyester resin 50～65%, glass fibre 28～35%, silane type coupling agent particle 0.5～2.0%, span acid imide 0.5%～1%, ultraviolet light absorber 0.05～0.1%, antioxidant 1～2%, filler 5～8%.
2. fiber reinforced thermoplastics composite material section bar moulding process as claimed in claim 1 is characterized in that this moulding process comprises following process step:
(1) resin material melting premix: put into resin premixed device after the resin that drying is good, additive, ultraviolet light absorber, antioxidant, filler mix in proportion and carry out the melting premix, the melting feed liquid that mixes is transported in the constant temperature steeping vat through feeding device, and keep constant temperature steeping vat temperature in 180 ℃～200 ℃ scopes, make the resin feed liquid remain on molten state, so that the dipping of fiber prepreg material;
(2) fiber prepreg material preparation: glass fiber yarn, cloth, felt are after treatment, become the fiber prepreg by boundling knitting apparatus braiding lay, according to the required mechanical property requirements of section bar of preparation, by the boundling knitting apparatus lay, fiber layer thickness, the fibre content of fiber are adjusted;
(3) the pressure profit is soaked: will weave the good fiber prepreg material of lay and enter in the constant temperature steeping vat by the guide wheel guiding, and remove unnecessary glue by spreading roller and form blank behind material pressing roller roll-in dipping (2);
(4) blank finishing and temperature regulation: the blank of making is by auxiliary traction, precompressed and trimming apparatus, after temperature sensing carries out temperature detection, by temperature-adjusting device blank is carried out temperature regulation, keep blank temperature to keep the blanket temperature in 120 ℃～150 ℃ scopes;
(5), the polyester film lay: regulate the blank trim, by the polyester film laying device in the blank both sides each lay one deck polyester film;
(6), pre-shaping: the blanket of the good polyester film of lay maintains the temperature in 120 ℃～130 ℃ scopes, be dull and stereotyped through the preliminary roll-forming of pre-shaping pressure roller, at pre-shaping (3) intermediate section section bar is carried out temperature regulation and stress elimination, the sheet material temperature is remained in 100 ℃～110 ℃ scopes, and eliminate part sheet material stress;
(7) moulding: the preformed sheet material of process is finished product sheet material at pressure forming cooling zone (4) final cooling forming, keep preformed sheet material temperature in 80 ℃～90 ℃ scopes, adopt the pressure forming roll-in system identical with sheet material demand sectional shape, and final molding, difference according to required section bar, change difform pressure forming roller, have the section bar of L-type, round, I shape constant cross-section with preparation, and flat board, corrugated sheet, trapezoidal plate and surface has the sheet material of ornamental decorative pattern;
(8) cooling and shaping: the section bar of hygrosensor after to moulding carries out temperature detection, and the section bar of control cooling unit after to moulding carries out cooling and shaping;
(9) film reclaims: the polyester film of recovery reclaims by the polyester film recovering device;
(10) finished product is cut out: cooled section bar is cut out the finished section bar that forms the Len req size through after the finishing of traction, side cut and trimming apparatus by cutting device.
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| CN 200910015320 CN101886735B (en) | 2009-05-14 | 2009-05-14 | Fiber reinforced thermoplastics composite material section bar and molding technology |
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| CN 200910015320 CN101886735B (en) | 2009-05-14 | 2009-05-14 | Fiber reinforced thermoplastics composite material section bar and molding technology |
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Owner name: SHANDONG GRAD GROUP CO., LTD. Free format text: FORMER OWNER: GUAN YINGUI Effective date: 20150608 |
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Effective date of registration: 20150608 Address after: 253000 Shandong Province, Dezhou City Industrial Park, Greider Tianqu Road No. 6 Patentee after: Shandong Grad Group Co., Ltd. Address before: 253000 Shandong Province, Dezhou City Industrial Park, Greider Tianqu Road No. 6 Patentee before: Guan Yingui |