innovative technologies of bamboo processing in china
TRANSCRIPT
Innovative Technologies of Bamboo Innovative Technologies of Bamboo Processing in ChinaProcessing in China
Wang GeWang Ge
International Center for bamboo and Rattan
April.10,2015 Beijing, China
Outline 1. Bamboo Resource and Industry in China
3. Innovative Technologies and the Applications of Bamboo Processing
4. Technology Development for Bamboo Processing
2. Characteristics of Bamboo
1. Bamboo Resource and Industry in China
Bamboo is one of the fastest growing plants in the world， which could be used as industrial material in 3-5 years old.
China has rich bamboo resource，more than 30 genera and 500 species. Bamboo forest area was 3.2 million hectares in 1981, while 6.01 million hectares in 2013. Planting bamboo forest area of six provinces (Zhejiang, Guangdong, Sichuan, Guangxin, Fujian and Anhui) accounts for 77%.
1.Bamboo resource and bamboo forest area
2. Bamboo industry and bamboo products
More than one hundred series including ten thousand kinds of
bamboo products ， used in various fields including Bamboo-
based engineered materials, bamboo furniture, bamboo floorings,
bamboo pulp and paper, bamboo shoots, bamboo crafts, etc.
Bamboo industry output value reached 167.1 billion RMB ($28 bil
lion). Import and export trade volume reached $2 billion or above.
2. Characteristics of Bamboo
bamboo ring section
Out layer
Middle layer
Inner layer
bamboo transection
bamboo vascular bundle (SEM)bamboo fiber(SEM)
bamboo culms
1. Anatomic structure of bamboo
Tissues: Parenchyma 50-60%;Fibers 25-35% ; Conducting tissue 5-15% (vessels, sieve tubes)
2. Chemical composition of bamboo
Chemical composition : Cellulose 45-50 % Hemicellulose 20-25 % Lignin 20-30%
Extractives 2.5-5%
Ratio of chemical composition among genera and species are slightly different
Wood（MPa） Gui bamboo（MPa） Ci bamboo（MPa）Moso bamboo
Outer layer（MPa） Inner layer （ MPa）
40-140 245.7 177.9 328 107
The comparisons of tensile strength between bamboo and wood
Index bamboo age Maximum Minimum AVE
Tensile strength
（MPa） four-year-old 2708 1407 1710
Tensile modulus
（ GPa） four-year-old 40.8 19.6 27.1
Tensile strength of individual fiber (Moso bamboo)
3. Mechanical properties of bamboo
Typical bamboo products
3. Innovative Technologies and the applications of Bamboo Processing
In China, bamboo is widely used in manufacturing laminated bamboo board for structural components, and also bamboo mat plywood and bamboo-wood composite utilized as building sheathings (wall, floor and roof, etc).
- Bamboo-based structural composites
12m bamboo-based beam
10m bamboo-based truss
Based on the properties and
characteristics of bamboo,
bamboo processing technology
had been made a breakthrough on
structural design, adhesive,
connecting technique
- Engineered bamboo constructions
By utilization of engineered bamboo materials, all kinds of bamb
oo-based structural houses have been built in jiangsu, Hunan, Sichu
an, Beijing, Anhui Prov., etc.
Glued laminated bamboo being used as struct
ural material and bamboo beams structure bei
ng connected in the form of mortise and teno
n joints, the aseismic performance of the buil
ding is improved.
Large-span bamboo stru
cture public buildings cov
ers an area of 500 square
meters---The leisure
centre in Sichuan
bamboo-wood material for Do
ors and stairs
Bamboo-wood composite construction
Bamboo-wood composite materials for beam component
Taking advantage of high strength of bamboo and high volume recovery of planting wood respectively, bamboo-wood laminated composite were made into high performance materials which is used in construction.
- Aseismatic prefabricated bamboo house A total area of 1400 m2 of Aseismatic prefabricated bamboo-based house was built and donated to Sichuan earthquake disaster region in 2008 (20 sets in Du Jiangyan & 50 sets in Wolong Giant Panda Reserve), which made positive contribution for disaster region reconstruction.
Round bamboo structural house (Cost ： 1400RMB/m2 , Market sale price ： 2100RMB/m2 )
- Round bamboo structural house
Round bamboo structural house with solar heating system
Bamboo sliced veneer decorationBamboo sliced veneer decoration
- Bamboo decorative materials
Bamboo scrimber decoration and furniture
Bamboo Bamboo scimber scimber application in Jiangsu Wuxi Grand Theatreapplication in Jiangsu Wuxi Grand Theatre(Stage chair Ceil Wall flooring )(Stage chair Ceil Wall flooring )
Fireproofing grade: Europe fire standard M1 and Chinese fire protection standard B1
Bamboo Bamboo strip ceil decoration of strip ceil decoration of MadridMadrid I Internationanternational l AAirport, Spainirport, Spain
Bamboo sliced veneerBamboo sliced veneer interior decoration interior decoration of of German BMW carGerman BMW car
- Outdoor application
Outdoor bamboo scrimber decking
Key advanced technologies, which are durability , have made a breakthrough that bamboo composites used in outdoor successfully.
Exterior wall made of bamboo
- Bamboo-based twine pipe for hydraulic transportation purpose
Bamboo slivers or bamboo-bundle fibers are used as basic materials, through wet twine technology to make high value-added bamboo reinforced pressure pipe, which is diameter range from 200mm to 2000mm.
Take the place of a portion of glass reinforced pipe, steel tube, plastic pipe,etc, and reduce energy consumption, pollution and the use of non-renewable resources. It can meet the demand of forestry, hydraulic transportation, agricultural irrigation, municipal pipe network, etc.
Take full advantage of high
tensile strength, great
flexibility and toughness of
bamboo.
Bamboo-based twine pipe practical application for hydraulic transportation in agricultural irrigation.
- Bamboo blades for wind power generation
Bamboo blades for wind power
generator were made from bamboo l
aminated lumber and bamboo
scrimber. The manufacturing technol
ogy of bamboo-base reinforced mate
rials have been developed, which sati
sfies the basic requirement of dynam
ic load performance for above
purpose.
Bamboo blades for wind power generation with a length of 38 meters
In Shandong Hekou, the glass fiber reinforced materials were replaced by bamboo blades for wind-power generators and 1.5MW wind turbine generator system are working in national grid-connected system since 2009.
testing
assembling
working
- Bamboo based casing for electronic products A large number of equipment casing for electronic products (e.g. bamboo keyboard, mouse, loudspeaker casing) were manufactured by bamboo instead of plastic, which are environmental friendliness, sustainable utilization etc.
Bamboo-based keyboard and loudspeaker casing
A single moso bamboo culm = four bamboo keyboards = $133 (A single moso bamboo culm = $2 ~ $3)
- The flattened processing technology of round bamboo culms and its products
Chopping Boards ： The round bamboo culms are directly flattened and made into a whole chopping block without adhesive on the surface. The products are customized for the European brand WMF.
A Bamboo Floorings ： The round bamboo culms are also directly flattened and made into a whole bamboo floorings, and the bamboo recovery reached 80% above.
- Bamboo fiber for textile purpose
* Natural bamboo fiber preparation and identification techn
ology for textile purpose :
The pretreating, decomposing, soften molding and postprocess
ing technology of natural bamboo fiber has been developed in
recent years.
The bamboo fiber textiles and fabrics have been produced with
the properties of natural bamboo fiber being remained.
Novel natural bamboo fiber identification method have been d
eveloped.
Natural bamboo fiber fabric products
Raw bamboo material Bamboo cellulose pulp
V iscose bamboo fiberViscose bamboo fiber yarn Viscose bamboo fiber products
* The processing technology of viscose bamboo fiber and fabrics:
Viscose bamboo fiber fabric products
Colorful bamboo vases:
- Processing technology of Bamboo-based high quality artwork
Colorful bamboo weaving paintings:
4. Technology Development for Bamboo Processing
The manufacturing technologies of bamboo-based durable engineering materials
Outdoor application, engineering use, etc. High yield and economical utilization of
advanced bamboo processing technology
Reconstituting, flattening, etc. Key technologies for manufacturing of modern
bamboo building components
Low carbon consumption, energy saving, environmental-friendly housing. etc.
New technology of functional improvement for bamboo-based products
Waterproof, anticorrosion, mildewproof, etc.
Bamboo is a natural renewable resource. Com
pared with petrochemical materials, the processi
ng of bamboo performs energy saving, environme
ntal protection and sustainable development.
LCALCA
Bamboo is a natural renewable resource, and
its processing is environmental-friendly and sust
ainable. Bamboo industry has a vast market
potential and a bright prospect.
Thank you ！Wang Ge ProfessorInternational Center for bamboo and RattanThe Bamboo Utilization Committee of China National Bamboo Industry AssociationNo.8 FuTong Eastern Avenue, Wangjing Area,Chaoyang District, Beijing 100102, P.R.China010-84789751 [email protected]