CN101725216B - Unsaturated polyester-bonded and glass fiber-reinforced beam and implementation method thereof - Google Patents
Unsaturated polyester-bonded and glass fiber-reinforced beam and implementation method thereof Download PDFInfo
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- CN101725216B CN101725216B CN2009100732263A CN200910073226A CN101725216B CN 101725216 B CN101725216 B CN 101725216B CN 2009100732263 A CN2009100732263 A CN 2009100732263A CN 200910073226 A CN200910073226 A CN 200910073226A CN 101725216 B CN101725216 B CN 101725216B
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Abstract
The invention discloses an unsaturated polyester-bonded and glass fiber-reinforced beam and an implementation method thereof, belonging to the manufacturing field of building structure materials. The glass fiber-reinforced beam mainly consists of glulam beam and glass fiber cloth, and glass fiber cloth is bonded at the partial bottom of the beam by unsaturated polyester so that the beam is reinforced. The preparation method of the glass fiber-reinforced beam realizes the preparation of the glulam beam and the partial reinforcement of the glass fiber cloth through a series of processes of preparing materials, processing, finger jointing, cold pressing, pretreating, post treating and the like. The glass fiber-reinforced beam solves the problems that the structure is difficult to reinforce due to the blockage of connection positions and wood composites have poor performance caused by the quality defects of wood in the mode of partial reinforcement, simultaneously utilizes the unsaturated polyester to bond the glass fibers for reinforcement to save the cost of an adhesive, and can bond multi-layer glass fiber cloth to reach high reinforcement strength.
Description
Technical field
The present invention relates to a kind of unsaturated polyester-bonded and glass fiber-reinforced beam and implementation method thereof, belong to structural lumber and make the field.
Background technology
At present; because various countries are to the protection of the environment and the forest reserves; make the high-quality timber of engineered wood composite material production usefulness relatively deficienter; but development and prosperity along with wooden construction; society is continuing to increase the demand of engineered wood composite material, thereby impels various countries will how to utilize artificial fast growing wood, low timber inferior as the emphasis of studying.The artificial quick growing species of trees such as poplar, wide in the cultivated area of China, timber reserves abundant, but poor because of material, defective is many etc., and reason is not well used always.Glass fiber is a kind of fortifying fibre commonly used, has a lot of premium properties: the hot strength height, and elongation rate is little, the coefficient of elasticity height, rigidity is good, belongs to inorfil, has noninflammability, and chemical-resistance is good, dimensional stability, good heat resistance, good with the resin property followed, low price.Unsaturated polyester resin is to use comparatively general matrix material in the glass fiber reinforced plastic industry, each side chemical property and mechanical property excellence, better to the permeability of timber, the adhesive property excellence, better with the compatibility of glass fiber, can arrange in pairs or groups forms the composite system of excellent performance.
Summary of the invention
The purpose of this invention is to provide the manufacture method that a kind of glass fiber for the suitability for industrialized production use strengthens wooden frame; and solve existing structure by the mode that the part strengthens and hinder the problem that is difficult to strengthen the composite wooden material poor-performing that causes with poplar material defective because of connecting portion; utilize the fiber reinforcement of unsaturated polyester resin adhering glass to save the cost of adhesive and glass fabric that can the bonding more number of plies simultaneously to reach higher enhancing intensity; in addition; this preparation method's step 4; five also are applicable to the maintenance of Gu Mu building historical relic; reinforcement etc.; be equipped with thin wood plate and decorate, the protection and the original appearance reparation of timber buildings provide a kind of practicable approach for ancient times.
Six steps such as the manufacture method of unsaturated polyester resin adhering glass fiber reinforcement wooden frame mainly comprises the processing of getting the raw materials ready, finger, colds pressing, preliminary treatment and post-processed.
The processing of getting the raw materials ready: after log saw separated into sawn timber, be dried to moisture content and be till the 8-12%.Afterwards that drying is good sawn timber is processed into the size of appointment, and carries out end machining, mills out the finger tenon, and the length of finger tenon is 10-35mm.
Finger: the bonding adhesive of selecting during termination is a milky white adhesive, and the single face applying glue is carried out in the wood plank termination that processes, and resin added is: 100-700g/m
2To referring to that tenon vertically applies suitable pressure, fully glue together so that refer to the tenon inclined-plane, the end pressure pressure is 4-8MPa, the end pressure time is 1-8s.After end is pressed and is finished, more than the health 24h.
Cold pressing: selecting the glue kind is isocyanate glue, and the timber laminate that processes is carried out the single face applying glue, and resin added is: 100-700g/m
2The timber laminate that applying glue is finished carries out assembly, colds pressing afterwards, and the pressure of colding pressing is 1-5MPa, and the time of colding pressing is 3-24h, cold pressing finish after to more than the wooden frame ageing 24h.
Preliminary treatment: wooden frame bottom wood plate is carried out sanding handle, and be coated with an amount of unsaturated polyester resin, the middle curing compound of unsaturated polyester (UP) accounts for resin ratio at 1-5%, accelerator accounts for the ratio of resin at 0.5-2%, to guarantee that unsaturated polyester resin has enough applicable times, the coating weight of unsaturated polyester resin is 100-300g/m
2, leave standstill 1-3min, make unsaturated polyester resin penetrate into timber inside, help improving the fiber adhesive strength.
Post-processed: with specification is 80-160g/m
2Length is that the glass fabric of wooden frame length 30-70% is put into deployed unsaturated polyester resin (portions of resin curing compound: accelerator=100: 1: 0.5～100: 5: 2) dipping 1-5min, the glass fabric (number of plies is the 1-14 layer) that dipping is finished pastes on the weak link of bottom timber laminate, and put down, smoothen with roll-in, guarantee that simultaneously glue thoroughly infiltrates in the cloth.It is bonding closely, firm to guarantee glass fabric and wooden frame to cold pressing with clamp or employing cold press.
The present invention utilizes unsaturated polyester resin adhering glass fiber that wooden frame is carried out the part enhancing, the mechanical strength and the creep resistance of wooden frame had both been improved, the variability of the wooden frame that has reduced the performance difference of timber own again and caused has also been avoided the too high problem of cost that causes because of sqtructural adhesives such as a large amount of use epoxide-resin glues simultaneously.Production technology of the present invention is simple, and is easy to operate, and adhesive effect is good, strengthens the intensity height, and suitable large scale industry production, for artificial speed such as poplar are given birth to, the application of low-quality low-grade wood in building structure provides a kind of possibility.
Description of drawings
Fig. 1 is the structural representation of unsaturated polyester resin adhering glass fiber reinforcement wooden frame finger tenon.
Fig. 2 is the structural representation of unsaturated polyester resin adhering glass fiber reinforcement wooden frame defect in timber
Code name explanation among the figure:
1, glass fabric; 2, timber laminate; 3, finger tenon; 4, defect in timber.
The specific embodiment
Give an actual example below in conjunction with accompanying drawing and to describe:
After log saw separated into sawn timber, dry target moisture content was 12%, and dry back moisture content all can at 8-12%.Afterwards sawn timber is carried out fine finishining, and mill out the finger tenon, the length of finger tenon is 10, or 12, or 15, or 20, or 25, or 30, or 35mm.The timber laminate 2 termination single faces that process are applied milky white adhesive, and resin added is: 100, or 200, or 300, or 400, or 500, or 600, or 700g/m
2Finger tenon 3 is vertically applied suitable pressure, and the end pressure pressure is 4, or 5, or 6, or 7, or 8MPa, the end pressure time is 1, or 2, or 3, or 4, or 5, or 6, or 7, or 8s.After end is pressed and is finished, more than the health 24h.Timber laminate 2 single faces that process are applied isocyanate glue, and resin added is: 100, or 200, or 300, or 400, or 500, or 600, or 700g/m
2The timber laminate 2 that applying glue is finished carries out assembly, colds pressing afterwards, and the pressure of colding pressing is 1, or 2, or 3, or 4, or 5MPa, the time of colding pressing is 3, or 6, or 9, or 12, or 15, or 18, or 24h, cold pressing afterwards more than the ageing 24h.With 80-300 order sand paper wooden frame bottom laminate being carried out sanding handles, be coated with the unsaturated polyester resin of an amount of proper proportion, wherein to account for the bulk resin ratio be 1% to curing compound, or 2%, or 3%, or 4%, or 5%, the ratio of accelerator station bulk resin is 0.5%, or 1%, or 1.5%, or 2%.With specification is 80, or 100, or 120, or 140, or 160g/m
2, length is 30% of wooden frame length, or 40%, or 50%, or 60%, or 70% glass fabric 1 is put into deployed unsaturated polyester resin (portions of resin curing compound: accelerator=100: 1: 0.5～100: 5: 2) dipping 1, or 2, or 3, or 4, or 5min, the glass fabric that dipping is finished (number of plies is 1, or 2, or 3, or 4, or 5, or 6, or 7, or 8, or 9, or 10, or 11, or 12, or 13, or 14 layers) paste on the finger tenon 3 or defect in timber 4 of bottom timber laminate 2, and flat with roll-in, smoothen, cold pressing with clamp or employing cold press, through the gummed wooden frame finished product that is enhanced after the health.
Claims (1)
1. the job practices of a unsaturated polyester resin adhering glass fiber reinforcement wooden frame is characterized in that the processing step of this method is divided into:
A. the processing of getting the raw materials ready: after log saw separated into sawn timber, be dried to moisture content and be till the 8-12%, be processed into the size of appointment, and carry out end machining, mill out the finger tenon, the length of finger tenon is 10-35mm;
B. finger: refer to tenon end single face coating milky white adhesive, resin added is 100-700g/m
2, vertically hold pressure to referring to tenon, the end pressure pressure is 4-8MPa, the end pressure time is 1-8s, after end is pressed and finished, more than the health 24h;
C. cold pressing: to timber laminate (2) the single face coated with isocyanate bonding adhesive that processes, resin added is: 100-700g/m
2, the timber laminate (2) that applying glue is finished carries out assembly, colds pressing afterwards, and the pressure of colding pressing is 1-5MPa, and the time of colding pressing is 3-24h, colds pressing more than the back ageing 24h;
D. preliminary treatment: wooden frame bottom wood plate (2) is carried out sanding handle, and the coating unsaturated polyester resin, it is 1-5% that the curing compound in the unsaturated polyester (UP) accounts for resin ratio, and the ratio that accelerator accounts for resin is 0.5-2%, and coating weight is 100-300g/m
2, after the coating, leave standstill 1-3min;
E. post-processed: with specification is 80-160g/m
2Length is that the glass fabric (1) of wooden frame length 30-70% is put into deployed unsaturated polyester resin and flooded 1-5min, the proportioning of unsaturated-resin is: the portions of resin curing compound: accelerator=100: 1: 0.5～100: 5: 2, the glass fabric (1) that dipping is finished pastes on the finger tenon (3) or defect in timber (4) of bottom timber laminate (2), glass fabric (1) number of plies is the 1-14 layer, and it is flat with roll-in, smoothen, guarantee that simultaneously glue thoroughly infiltrates in the glass fabric (1), it is bonding closely to guarantee glass fabric (1) and wooden frame to cold pressing with clamp or employing cold press, firmly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100732263A CN101725216B (en) | 2009-11-19 | 2009-11-19 | Unsaturated polyester-bonded and glass fiber-reinforced beam and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100732263A CN101725216B (en) | 2009-11-19 | 2009-11-19 | Unsaturated polyester-bonded and glass fiber-reinforced beam and implementation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN101725216A CN101725216A (en) | 2010-06-09 |
| CN101725216B true CN101725216B (en) | 2011-07-27 |
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| CN2009100732263A Expired - Fee Related CN101725216B (en) | 2009-11-19 | 2009-11-19 | Unsaturated polyester-bonded and glass fiber-reinforced beam and implementation method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108198B (en) * | 2010-12-21 | 2013-01-16 | 太原科技大学 | Manufacturing method of compound material supporting plate |
| CN102241043A (en) * | 2011-05-12 | 2011-11-16 | 中南林业科技大学 | Method for producing high-strength wood structure engineering material |
| CN102561588A (en) * | 2011-12-23 | 2012-07-11 | 东北林业大学 | Fiber reinforced material reinforcement wood beam and preparation method thereof |
| CN104453267A (en) * | 2013-09-18 | 2015-03-25 | 福州大学 | Structure and manufacturing method of CFRP (carbon fiber reinforced plastic) sheet reinforced tenon-and-mortise-structure extension wooden beam |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213058U (en) * | 1987-09-01 | 1988-05-18 | 陈开玉 | Composite material construction member |
| CN2091219U (en) * | 1990-12-17 | 1991-12-25 | 姜世麟 | Colour face wood composition building decorative plates |
| EP0617203A1 (en) * | 1993-03-26 | 1994-09-28 | Forestry And Forest Products Research Institute | Wood joining structure and method thereof |
-
2009
- 2009-11-19 CN CN2009100732263A patent/CN101725216B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213058U (en) * | 1987-09-01 | 1988-05-18 | 陈开玉 | Composite material construction member |
| CN2091219U (en) * | 1990-12-17 | 1991-12-25 | 姜世麟 | Colour face wood composition building decorative plates |
| EP0617203A1 (en) * | 1993-03-26 | 1994-09-28 | Forestry And Forest Products Research Institute | Wood joining structure and method thereof |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平10-37483A 1998.02.10 |
| 曹剑钊，蒋湘闽.FRP 加固修复木结构研究现状与展望.《山西建筑》.2006,第32卷(第4期), * |
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