CN1254368C - Bamboo-plastic composite section bar and producing technology thereof - Google Patents
Bamboo-plastic composite section bar and producing technology thereof Download PDFInfo
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- CN1254368C CN1254368C CN 200310110875 CN200310110875A CN1254368C CN 1254368 C CN1254368 C CN 1254368C CN 200310110875 CN200310110875 CN 200310110875 CN 200310110875 A CN200310110875 A CN 200310110875A CN 1254368 C CN1254368 C CN 1254368C
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Abstract
The present invention discloses a bamboo-plastic composite sectional material and a producing technology thereof. The bamboo-plastic composite sectional material is formed by adhesively bonding a bamboo sectional material (1) and plastic (2) by an adhesive agent (3) in a composite mode. The producing technology comprises the steps that moso bamboo is preprocessed by a conventional technology; after being assembled or spliced and preheated, the moso bamboo is put in a neck mould of an injection molding machine; hot melt resin is squeezed and injected, and a hot-melt adhesive is coated on the bamboo sectional material; then, thermoplastic plastic is squeezed and injected in a mould; finally, a finished product is produced by forming in a composite mode, cooling, leaving the mould by traction and shaping. The bamboo-plastic composite sectional material has the advantages of good rigidity, good toughness, good flame resistance, good machining property, beautiful, smooth and clean appearance and low cost.
Description
Technical field
The invention belongs to bamboo wood deep process technology field, be specifically related to a kind of new material that utilizes bamboo section bar and plastics to be composited---bamboo-plastic composite section bar and production technology thereof.
Background technology
Bamboo with it noble and unsullied, tall and straight and himself good characteristic appreciated that by common people the bamboo utilization also is of long duration.Utilize bamboo to make bamboo slip used for writing on during ancient times the earliest and be used for shorthand, make bamboo chopsticks, household utensil, apparatus are used for papermaking, build house etc.Mainly utilize its mechanical rigid, elasticity and toughness, all belong to the direct utilization of the protomorphic mechanical performance of bamboo.But, the mechanical properties of bamboo mainly be axial joints development, split easily, machining property is poor, has influenced its application.Plastics just have been widely used with physicochemical property such as its good machining property, corrosion resistance since coming out.Along with development of technology, the compound material of various and plastics also is developed, and as PAP etc., has all obtained beyond thought effect.For this reason, directly utilize the deficiency on the performance and the good characteristic of plastics at existing bamboo, the inventor has developed a kind of bamboo-plastic composite section bar and production technology thereof through concentrating on studies for many years.Evidence, effect is good.
The innovation and creation content
1, the technical problem that will solve
The object of the present invention is to provide a kind of bamboo-plastic composite section bar.
Another object of the present invention is to provide the method for producing bamboo-plastic composite section bar.
2, technical scheme
The object of the present invention is achieved like this: the bamboo-plastic composite section bar that is formed by bamboo section bar and plastics compound sticking.
Another object of the present invention is achieved in that the production technology of bamboo-plastic composite section bar comprises following operation:
A. mao bamboon is carried out carrying out desinsection, peeling (going bluish yellow) cutting, boiling, flattening, planing, the dry processing with conventional method;
B. according to the specification needs of producing section bar, carry out group type or splicing, the common process typing is handled; Butted part for shaft-like section bar need be with soaking the resin neutral and alkali or not having alkaline glass fibre and carry out the take-up strap processing at joint;
C. the group type is good bamboo profile is preheated to about 100~150 ℃, put into injection machine mouth mould then, the PUR extrusion is squeeze note hot-melt resin in mould at first, coated heat melten gel on bamboo profile, follow-up plastics extrusion is clamp-oned the plastics of heating in the mould, plastics are by PUR and bamboo profile hot pressing composite molding, and depanning is drawn in typing, cooling;
D. cooled semi-finished product are carried out deburring, shaping.
3, beneficial effect
Because the present invention has adopted bamboo-plastic combined technology to make bamboo-plastic composite section bar, has improved the machining property of bamboo itself, has improved the mechanical strength of bamboo wood, has improved its cracking resistance, anti-tortuosity and fire resistance; Overcome the wicking property (easily absorb moisture content and make bamboo wood corrosion) of bamboo simultaneously, change the machinery and the physicochemical property of bamboo, prolonged the service life of bamboo wood, enlarged its application, be a kind of advanced composite material (ACM) of high quality and at a reasonable price, have application value widely.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment, but the invention is not restricted to shown in the accompanying drawing.
Fig. 1 is the cross-sectional view of the shaft-like section bar of the present invention;
Fig. 2 is the cross-sectional view of the tabular section bar of the present invention;
Fig. 3 is tabular section bar end face structure schematic diagram.
The specific embodiment
As shown in Figure 1-Figure 3, bamboo-plastic composite section bar of the present invention is formed by bonding agent 3 compound stickings by bamboo section bar 1 and plastics 2.
Another object of the present invention is achieved in that the production technology of bamboo-plastic composite section bar comprises following operation:
A. mao bamboon is carried out carrying out desinsection, peeling (going bluish yellow) cutting, boiling, flattening, planing, the dry processing with conventional method;
B. according to the specification needs of producing section bar, carry out group type or splicing, the common process typing is handled; Butted part for shaft-like section bar need be with soaking the resin neutral and alkali or not having alkaline glass fibre and carry out the take-up strap processing at joint;
C. the group type is good bamboo profile is preheated to about 100-150 ℃, put into injection machine mouth mould then, the PUR extrusion is squeeze note hot-melt resin in mould at first, coated heat melten gel on bamboo profile, follow-up plastics extrusion is clamp-oned the thermoplastic of heating in the mould, plastics are by PUR and bamboo profile hot pressing composite molding, and depanning is drawn in typing, cooling;
D. cooled semi-finished product are carried out deburring, shaping.
The water content of fresh bamboo pole is bigger, need carry out drying in advance and handle.Temperature when dry should be controlled at below 80-110 ℃, make the moisture content of bamboo pole drop to 15% after, preliminary typing.Going into the preceding moisture content of mould should drop to below 8%.
Do not need to prolong butt joint for shaft-like cylinder section bar, but for the tapering that forms naturally, can twine by the glass fibre of the thinner end of diameter with impregnation, to reach the process technology requirement of thickness unanimity, the while can increase the mechanical strength of becoming a useful person.
Resin described in the B step is Lauxite, phenolic resins, epoxy resin.
Plastics described in the C step both can be thermoplastics, all could as PE, PP, PS, PVC, ABS or modified thermoplastic; Also can use thermosetting plastics, all not influence the realization of the object of the invention.
PUR described in the C step is low density polyethylene (LDPE) (LDPE), ethylene-vinyl acetate copolymer (EVA), vinyl-acrylate copolymer (EEA) etc.
Use the coupling agent treatment that is complementary with resin when glass fibre uses, carry out reforming processing with common process then.
Shaping is handled, and the section that forms is carried out waterproof, anti-corrosion treatment
Embodiment one
Warmhouse booth is built and is used shaft-like bamboo-plastic composite section bar.Select diameter 2cm for use, bamboo 3-6 in age, taperingness is little, free from insect pests, the phyllostachys nigra var. henonis of scar, henon bamboo, grey bamboo or spot bitter bamboo etc., require the footpath do straight, perfectly round, do not have crooked, deformation.At first mao bamboon is pruned, gone green grass or young crops (skin), acromere, common process drying with skinning machine; Need the bamboo pole two ends of butt joint to cut into coadapted inserting groove (mouthful or face), hollow space is penetrating the external diameter thin bamboo that matches of internal diameter with it, increases the contact area of interface, to improve adhesive strength.Twine with neutral and alkali or alkalescent glass fibre dry and that soaked into Lauxite then, make semi-finished product for standby 100 ℃ of dryings.Put into injection machine mouth mould by gatherer then, the PUR extruder is squeeze note hot-melt resin EVA in mould at first, coated heat melten gel on bamboo profile, plastic extruder is clamp-oned the PVC plastics of heating in the mould afterwards, plastics are by PUR and bamboo profile hot pressing composite molding, typing, cooling, the traction depanning; Carry out deburring, shaping finished product.
Bamboo-plastic combined shaft-like section bar can be used for the structural material of vegetables, flowers, breeding isothermal chamber booth, the rigidity and the toughness of comprehensive bamboo wood, and plastics are corrosion-resistant, Nai Hou and ageing-resistant performance, in the service life of improving booth, reduced production cost.
Embodiment two
Bamboo is moulded tabular composite material.Select for use diameter greater than the imperial bamboo of 8cm free from insect pests, scar, bamboo etc. as former material.Require the footpath do straight, perfectly round, do not have crooked, deformation.At first mao bamboon is pruned, gone green grass or young crops (skin), acromere, common process drying with skinning machine; Specification needs according to producing section bar carry out group type or splicing, and the common process typing is handled; Bamboo profile after will finalizing the design is then put into injection machine mouth mould, the PUR extruder is squeeze note EEA in mould at first, coated heat melten gel on bamboo profile, plastic extruder is clamp-oned the PP plastics of heating in the mould afterwards, plastics are by PUR and bamboo profile hot pressing composite molding,, typing, cooling traction depanning; Carry out deburring, shaping finished product.
Bamboo is moulded tabular composite material can be used as decorative panel, clad plate, building decoration, furniture making and packaging material, building template etc.
Characteristics of the present invention:
1, bamboo board easy-formation, the utilization rate height of bamboo can not need big machinery
2, product design smooth and beautiful appearance need not to carry out surface treatment again;
3, sheet material has good rigidity and toughness, has improved simultaneously the machining property of bamboo wood;
4, waterproof, antifouling, grease proofing, easy to clean; Has good fire resistance;
5, production cost is low, and product price is cheap.
Claims (4)
1, a kind of bamboo-plastic composite section bar production technology is characterized in that: comprise following operation:
A. mao bamboon is carried out carrying out desinsection, peeling (going bluish yellow) cutting, boiling, flattening, planing, the dry processing with conventional method;
B. according to the specification needs of producing section bar, carry out group type or splicing, the common process typing is handled; Butted part for shaft-like section bar need be with soaking the resin neutral and alkali or not having alkaline glass fibre and carry out the take-up strap processing at joint;
C. the group type is good bamboo profile is preheated to about 100-150 ℃, put into injection machine mouth mould then, the PUR extrusion is squeeze note hot-melt resin in mould at first, coated heat melten gel on bamboo profile, follow-up plastics extrusion is clamp-oned the thermoplastic of heating in the mould, plastics are by PUR and bamboo profile hot pressing composite molding, and depanning is drawn in typing, cooling;
D. cooled semi-finished product are carried out deburring, shaping.
2, the production technology of bamboo-plastic composite section bar as claimed in claim 1 is characterized in that: the resin described in the B step is Lauxite, phenolic resins, epoxy resin.
3, the production technology of bamboo-plastic composite section bar as claimed in claim 1 is characterized in that: the plastics described in the C step are thermoplastic PP, PVC.
4, the production technology of bamboo-plastic composite section bar as claimed in claim 1 is characterized in that: the PUR described in the C step is low density polyethylene (LDPE) (LDPE), ethylene-vinyl acetate copolymer (EVA), vinyl-acrylate copolymer (EEA).
Priority Applications (1)
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CN 200310110875 CN1254368C (en) | 2003-11-04 | 2003-11-04 | Bamboo-plastic composite section bar and producing technology thereof |
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CN 200310110875 CN1254368C (en) | 2003-11-04 | 2003-11-04 | Bamboo-plastic composite section bar and producing technology thereof |
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CN1254368C true CN1254368C (en) | 2006-05-03 |
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Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101733808B (en) * | 2008-11-07 | 2014-11-26 | 北京环能海臣科技有限公司 | Straw section with waterproof skin compounded on surface |
CN101767482B (en) * | 2010-01-29 | 2013-04-24 | 喻萍 | Plastic-bamboo composite material machining method and plastic-bamboo composite material |
CN102431245A (en) * | 2011-09-08 | 2012-05-02 | 宁波雄歌进出口有限公司 | Plastic bamboo plate and production technology thereof |
CN103042682B (en) * | 2012-10-31 | 2015-07-01 | 广东木森日用品有限公司 | Combined injection-moulding technology of silica gel and bamboo |
CN103244760B (en) * | 2013-05-17 | 2015-04-15 | 衢州市易凡设计有限公司 | Plastic base paper composite pipe |
CN106393386B (en) * | 2016-11-22 | 2020-01-03 | 贺州隆源新材料有限公司 | Bamboo, paper-making solid waste artificial board containing fiber and plastic and manufacturing process thereof |
CN106808704A (en) * | 2017-01-18 | 2017-06-09 | 桃江仁德竹塑复合板有限公司 | A kind of production technology of bamboo embryo frosting hot press composite board |
CN109210046A (en) * | 2017-07-01 | 2019-01-15 | 唐麟 | A kind of foldable bamboo pole |
CN109203599B (en) * | 2018-11-09 | 2023-12-12 | 浙江农林大学暨阳学院 | Bamboo tube reinforced plastic compound and its production process |
CN110435168A (en) * | 2019-06-21 | 2019-11-12 | 谢治高 | A kind of preparation method of deformable complex architectural template |
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