CN112026213A - Manufacturing method of super-strong bamboo fiber composite board - Google Patents
Manufacturing method of super-strong bamboo fiber composite board Download PDFInfo
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- CN112026213A CN112026213A CN202010656226.2A CN202010656226A CN112026213A CN 112026213 A CN112026213 A CN 112026213A CN 202010656226 A CN202010656226 A CN 202010656226A CN 112026213 A CN112026213 A CN 112026213A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
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- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention provides a manufacturing method of a super-strong bamboo fiber composite board, which comprises the steps of blending bamboo fibers with equivalent diameters of (0.2-0.5) mm and lengths of (30-100) mm and thermoplastic short fibers into a blended rope according to the mass ratio of (70-30)% to (30-70)% of bamboo, and uniformly mixing thermoplastic powder (80-20)% and bamboo fiber powder (20-80)% to form mixed powder. The invention uses the blended rope as the reinforcing rib and the mixed powder as the filler to prepare the reinforced bamboo-plastic composite material, breaks the application limitation of the traditional bamboo, realizes the multi-functionalization of the bamboo fiber material and greatly improves the added value of the bamboo fiber material.
Description
Technical Field
The invention relates to a manufacturing method of a super-strong bamboo fiber composite board, in particular to a reinforced composite board prepared by using bamboo fibers and thermoplastic plastics as main raw materials.
Background
The bamboo fiber is natural fiber (also called bamboo fiber) which is obtained from bamboo, has the advantages of small density, high strength, large rigidity, wear resistance and the like, and is green, environment-friendly, renewable and degradable plant fiber. The data show that the tensile strength of the bamboo fiber prepared by the advanced process is equivalent to that of carbon steel, and the mechanical property of the composite material prepared by the bamboo fiber can be compared favorably with that of glass fiber reinforced plastics, so the bamboo fiber is also called as natural glass fiber.
The thermoplastic bamboo fiber composite material can be prepared by compounding the bamboo fiber serving as a reinforcing material and the thermoplastic plastic serving as a matrix, has the characteristics of bamboo and thermoplastic plastic, overcomes the defects that the bamboo material is easy to damage by worms and mildew and the thermoplastic plastic has high cost and low strength through compounding, and has the advantages of low cost, small shrinkage and distortion, good mechanical property, no formaldehyde release, moth prevention, water resistance, mildew resistance and the like, so that the prepared thermoplastic bamboo fiber composite material becomes an engineering material with good performance.
The documents relevant to the present invention are:
1. CN201010531535.3 thermoplastic bamboo fiber composite board and its manufacturing method: by five layers of material mould pressing complex forms, the top layer is the adhesive linkage, and the second floor is compound bamboo fiber felt, and the third layer is the adhesive linkage, and the fourth layer is compound bamboo fiber felt, and the fifth layer is glued the non-woven fabrics, wherein the preparation of compound bamboo fiber felt: and (3) carrying out mixing, carding, lapping and needling to obtain the bamboo fiber felt with the area mass of 300-900 g/m & lt 2 & gt.
2. CN 201811492363.6A production method of natural bamboo fiber composite board: the surface layer of the composite board is a decorative fabric, the second layer is a hot melt adhesive film, the third layer is non-woven fabric, the fourth layer is a natural bamboo fiber and polypropylene short fiber mixed needled felt, the fifth layer is non-woven fabric, and the needled felt is formed into a continuous natural bamboo fiber and polypropylene short fiber mixed needled felt after secondary needling of a lapping machine and a needling machine.
3. The processing method of the CN201310630564.9 thermoplastic bamboo fiber composite board comprises the following steps: including surface covering, intermediate level and bottom, its characterized in that: the middle layer is a composite bamboo fiber felt formed by mixing polypropylene fibers, glass fibers and bamboo fibers.
4. CN201310078036.7 bamboo fiber automobile parts with plastic part appearance characteristics and manufacturing method: uniformly mixing 50% by weight of bamboo crude fiber, 49.5-50% by weight of PP fiber and 0-0.5% by weight of material for reinforcing and toughening, and then directly carrying out hot pressing treatment on the mixture.
5. The production process of the CN201910396630.8 bamboo fiber reinforced composite rope comprises the following steps: twisting natural bamboo fiber into bamboo fiber rope, soaking and rolling the bamboo fiber rope with the coupling agent solution, and soaking and rolling the resin and the functional auxiliary agent with corresponding characteristics according to the production target product.
The bamboo fibers in the boards prepared in documents 1 to 4 are all in a 'felt' state, namely, a free state, and are not beneficial to tension transmission; document 5 is a combination of a dipping and rolling method, and is disadvantageous in the exertion of tensile properties.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a manufacturing method of a super-strong bamboo fiber composite board, which comprises the following steps: the ultra-strong characteristic is that firstly, a 'prestress' principle is introduced for the first time in the industry, so that the bamboo-plastic mixed stranded rope can play a maximum tension transmission role; secondly, the bamboo-plastic warp is mixed and twisted into a rope, so that the limitation of the length of the bamboo is solved; thirdly, the concept of bamboo green part (bamboo green fiber) and bamboo meat part (bamboo meat fiber) is proposed to fully exert the fiber characteristics of all parts of the bamboo. On the basis, the bamboo fiber powder is added into the filler to prevent the filler from microcracking, so that the overall strength of the composite board is further enhanced.
The invention is realized by the following steps: a manufacturing method of a bamboo fiber composite board comprises the following steps:
step 1: mixing and twisting bamboo fibers with equivalent diameters of (0.2-0.5) mm and lengths of (50-200) mm and thermoplastic short fibers according to the mass ratio of (80-20)% to (20-80)% of bamboo to form a bamboo-plastic blended rope;
step 2: uniformly mixing 70-30 mass percent of thermoplastic plastic powder and 30-70 mass percent of bamboo fiber powder to form bamboo-plastic mixed powder;
and step 3: crossing the bamboo-plastic blended rope into a plurality of rib surfaces in a hot pressing box according to the certain angle and the certain mesh number of warps and wefts, and applying a tension of (10-50) MPa to the bamboo-plastic blended rope;
and 4, step 4: filling the bamboo-plastic mixed powder into a hot pressing box, applying (10-20) MPa pressure and (140-230) DEG C temperature, and continuing (10-30);
and 5: keeping the tension and cooling to room temperature.
Further, the bamboo filament may use bamboo green fiber or bamboo pulp fiber according to the strength requirement.
Furthermore, the bamboo fiber powder has an equivalent diameter of (0.003-0.2) mm and a length of (2-10) mm.
The invention has the advantages that: the reinforced bamboo-plastic composite material prepared by using the blended ropes as reinforcing ribs and using the mixed powder as a filler breaks the application limitation of the traditional bamboo wood, realizes the multifunction of the bamboo fiber material and greatly improves the additional value of the bamboo fiber material.
Detailed Description
The embodiment 1 of the manufacturing method of the bamboo fiber composite board disclosed by the invention is as follows:
step 1: mixing bamboo fiber with equivalent diameter of 0.5mm and length of 200mm and thermoplastic short fiber in a mass ratio of 20% of bamboo and 80% of plastic to form a bamboo-plastic blended rope;
step 2: uniformly mixing 70% of thermoplastic plastic powder and 30% of bamboo fiber powder in a mass ratio to form bamboo-plastic mixed powder;
and step 3: crossing the bamboo-plastic blended rope into a plurality of rib surfaces in a hot pressing box according to the certain angle and the certain mesh number of warps and wefts, and applying 50MPa tension to the bamboo-plastic blended rope;
and 4, step 4: filling the bamboo-plastic mixed powder into a hot pressing box, and applying pressure of 20MPa and temperature of 230 ℃ for 30 minutes;
and 5: keeping the tension and cooling to room temperature.
Example 2 is:
step 1: mixing and twisting the bamboo green fiber with the equivalent diameter of 0.3mm and the length of 100mm and the thermoplastic short fiber into a bamboo-plastic blended rope according to the mass ratio of 50% of bamboo and 50% of plastic;
step 2: uniformly mixing 50% of thermoplastic plastic powder and 50% of bamboo fiber powder in a mass ratio to form bamboo-plastic mixed powder;
and step 3: crossing the bamboo-plastic blended rope into a plurality of rib surfaces in a hot pressing box according to the certain angle and the certain mesh number of warps and wefts, and applying 30MPa tension to the bamboo-plastic blended rope;
and 4, step 4: filling the bamboo-plastic mixed powder into a hot pressing box, and applying the pressure of 15MPa and the temperature of 180 ℃ for 20 minutes;
and 5: keeping the tension and cooling to room temperature.
Example 3 is:
step 1: mixing bamboo pulp fiber with equivalent diameter of 0.2mm and length of 50mm and thermoplastic short fiber at a mass ratio of 80% bamboo and 20% bamboo to form bamboo-plastic spinning rope;
step 2: uniformly mixing 30% of thermoplastic plastic powder and 70% of bamboo fiber powder in a mass ratio to form bamboo-plastic mixed powder;
and step 3: crossing the bamboo-plastic blended rope into a plurality of rib surfaces in a hot pressing box according to the certain angle and the certain mesh number of warps and wefts, and applying 10MPa tension to the bamboo-plastic blended rope;
and 4, step 4: filling the bamboo-plastic mixed powder into a hot pressing box, and applying 10MPa pressure and 140 ℃ for 10 minutes;
and 5: keeping the tension and cooling to room temperature.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (3)
1. The manufacturing method of the bamboo fiber composite board is characterized by comprising the following steps: the method comprises the following steps:
step 1: mixing and twisting bamboo fibers with equivalent diameters of (0.2-0.5) mm and lengths of (50-200) mm and thermoplastic short fibers according to the mass ratio of (80-20)% to (20-80)% of bamboo to form a bamboo-plastic blended rope;
step 2: uniformly mixing 70-30 mass percent of thermoplastic plastic powder and 30-70 mass percent of bamboo fiber powder to form bamboo-plastic mixed powder;
and step 3: crossing the bamboo-plastic blended rope into a plurality of rib surfaces in a hot pressing box according to the certain angle and the certain mesh number of warps and wefts, and applying a tension of (10-50) MPa to the bamboo-plastic blended rope;
and 4, step 4: filling the bamboo-plastic mixed powder into a hot pressing box, applying (10-20) MPa pressure and (140-230) DEG C temperature, and continuing (10-30);
and 5: keeping the tension and cooling to room temperature.
2. The method of manufacturing a bamboo fiber composite board as claimed in claim 1, wherein: the bamboo fiber can be bamboo green fiber or bamboo pulp fiber according to the strength requirement.
3. The method of manufacturing a bamboo fiber composite board as claimed in claim 1, wherein: the bamboo fiber powder has the equivalent diameter of (0.003-0.2) mm and the length of (2-10) mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010656226.2A CN112026213A (en) | 2020-07-09 | 2020-07-09 | Manufacturing method of super-strong bamboo fiber composite board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010656226.2A CN112026213A (en) | 2020-07-09 | 2020-07-09 | Manufacturing method of super-strong bamboo fiber composite board |
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| CN112026213A true CN112026213A (en) | 2020-12-04 |
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| CN202010656226.2A Pending CN112026213A (en) | 2020-07-09 | 2020-07-09 | Manufacturing method of super-strong bamboo fiber composite board |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115302592A (en) * | 2022-07-14 | 2022-11-08 | 中国电子科技集团公司第三十八研究所 | High-tensile bamboo composite board and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330358A (en) * | 2010-07-14 | 2012-01-25 | 中原工学院 | Method for producing bamboo fiber composite material |
| CN102492289A (en) * | 2011-11-14 | 2012-06-13 | 丹阳丹金航空材料科技有限公司 | Carbon fiber reinforced composite material and preparation technology thereof |
| CN106065194A (en) * | 2016-06-12 | 2016-11-02 | 王海刚 | A kind of wood plastic composite of continuous lod and preparation method thereof |
| CN109760158A (en) * | 2019-02-22 | 2019-05-17 | 浙江农林大学暨阳学院 | A kind of bamboo fibre automotive trim panel composite material and manufacture craft |
-
2020
- 2020-07-09 CN CN202010656226.2A patent/CN112026213A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330358A (en) * | 2010-07-14 | 2012-01-25 | 中原工学院 | Method for producing bamboo fiber composite material |
| CN102492289A (en) * | 2011-11-14 | 2012-06-13 | 丹阳丹金航空材料科技有限公司 | Carbon fiber reinforced composite material and preparation technology thereof |
| CN106065194A (en) * | 2016-06-12 | 2016-11-02 | 王海刚 | A kind of wood plastic composite of continuous lod and preparation method thereof |
| CN109760158A (en) * | 2019-02-22 | 2019-05-17 | 浙江农林大学暨阳学院 | A kind of bamboo fibre automotive trim panel composite material and manufacture craft |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115302592A (en) * | 2022-07-14 | 2022-11-08 | 中国电子科技集团公司第三十八研究所 | High-tensile bamboo composite board and preparation method thereof |
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Application publication date: 20201204 |
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