CN102218855A - Composite board prepared from natural fiber and thermosetting foam plastic waste and preparation method thereof - Google Patents
Composite board prepared from natural fiber and thermosetting foam plastic waste and preparation method thereof Download PDFInfo
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- CN102218855A CN102218855A CN2011101348935A CN201110134893A CN102218855A CN 102218855 A CN102218855 A CN 102218855A CN 2011101348935 A CN2011101348935 A CN 2011101348935A CN 201110134893 A CN201110134893 A CN 201110134893A CN 102218855 A CN102218855 A CN 102218855A
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Abstract
The invention relates to a composite board prepared from natural fiber and thermosetting foam plastic waste and a preparation method thereof. The composite board is a three-layer composite board formed by thermosetting foam plastic, natural fiber and thermosetting foam plastic; the used raw material mainly comprises thermosetting styrene-acrylonitrile copolymer foam plastic waste; the original powder is preheated and dried, and jute fiber is evenly paved in the middle of the material to physically strengthen the styrene-acrylonitrile copolymer foam plastic waste completely by using a jute fiber reinforcement body. No binding agent, no solvent and no formaldehyde are not used, thus processing technique is greatly simplified, and production cost and resource consumption are reduced. The prepared board has high intensity, good stability, strong non-deformability, high smoothness, excellent humidity resistance, strong nail-holding power and good corrosion resistance.
Description
Technical field
The present invention relates to a kind of natural fiber and strengthen thermosetting foam plastics castoff regenerative composite board and preparation method thereof, belong to resource and reclaim and utilize again the field.
Background technology
Natural plant fibre and thermosetting foam plastics are mixed with composite board, can effectively utilize agricultural resource.The natural fiber reinforced composite is inexpensive with it, environmental friendliness and higher mechanical property become the frontier in the new and high technology investigation of materials.In the natural fiber, flaxen fiber has higher specific strength and specific modulus, has broad application prospects as the enhancing body of composite.The development of materials industry has hugely also produced a large amount of discarded objects simultaneously easily bringing for people's productive life, thermosetting plastics discarded object especially, and its recovery difficult is big and mostly because big its recovery value that reduces of complex process and energy resource consumption.
Styrene-propene eyeball copolymer (SAN) is a kind of engineering plastics of function admirable, advantage such as have good processability, modulus height, product surface is bright and clean, dimensional stability is good, be widely used in instrument, automobile, electricity etc. industry.But the recovery goods erosion-resisting characteristics of its discarded object is not good enough, and therefore, we select for use fiber to go to strengthen, and improve performance, promote application prospect.
Summary of the invention
The present invention seeks in order to solve the recycling problem of SAN discarded object, and provide that a kind of production technology is simple, production cost is low, product is nonpoisonous and tasteless and the natural fiber of function admirable strengthens composite regenerated preparation of plates method.A kind of natural fiber strengthens thermosetting foam plastics castoff regenerative composite board, the three-layer composite board material of being made up of thermosetting foam plastics, natural fiber and thermosetting foam plastics.As shown in Figure 1.
The present invention utilizes natural fiber and thermosetting foam plastics discarded object to prepare the method for composite board, and step is as follows:
1) discarded SAN foamed plastic waste is cleaned up; SAN foamed plastics after cleaning is ground to form 20-100 purpose powder;
2) with above-mentioned powder 100-170 ℃ of following preheating, the time is 10-30min;
3) preheating is good raw material is put into the hot press mould, and evenly lays the natural flaxen fiber of one deck in the raw material middle part; The mass percent of thermosetting foam plastics discarded object and natural fiber is 85-95: 5-15.
4) hot press is 5-20MPa at pressure, and temperature is 140-200 ℃, and the time is hot-forming under the condition of 5-30min.
Above-mentioned steps 4) sheet material after the moulding carries out low-temperature shapedly, and wherein pressure is 5-20MPa, and temperature is 20-80 ℃, and the time is 15-30min.
Above-mentioned steps 1) for discarded SAN foamed plastic waste is cut into the 0.5-2cm that is easy to grind
3Bulk, be ground into 20-100 purpose powder then.
The SAN foamed plastic waste that described thermosetting foam plastics discarded object is any monomer mole ratio.
Described natural fiber is tossa, flax fiber or ramee.
The material powder that the present invention uses mainly utilizes thermosetting styrene-acrylonitrile copolymer foamed plastic waste, in implementation step 2, preheating and drying temperature to original powder is unsuitable too high or too low, cross and to make original carbonization and cracking, cross the low intensity that then can't realize original finish-drying is influenced the gained composite board, preheating time also should be moderate, and is proper through probing at 100-170 ℃ of following preheating 15-30min.Flaxen fiber in the implementation step 3 should evenly be layed in the material middle part, in order to avoid the performance of gained sheet material is inhomogeneous, local strength is low excessively.
Be realization environmental protection truly among the present invention, in the preparation process of composite board, utilize flaxen fiber to strengthen body fully SAN foamed plastic waste clear body is carried out the physics enhancing, do not use adhesive, solvent-free formaldehydeless, greatly simplify production technology, reduced production cost, reduced resource consumption.It is strong that prepared sheet material has an intensity height, good stability, non-deformability, the flatness height, and humidity resistance is superior, and nail-holding ability is strong, decay resistance.
Figure of description
Fig. 1: natural fiber strengthens thermosetting foam plastics castoff regenerative composite board schematic diagram;
Wherein: 1 is that thermosetting foam plastics, 2 is fortifying fibre.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with specific embodiment.
(1) the SAN foamed plastic waste is cleaned up, and be ground into 20-100 purpose powder.
(2) take by weighing (1) middle SAN foamed plastic waste powder 38.25kg at 100 ℃ of following preheating 30min.
(3) preheating is good raw material is put into the hot press mould, and evenly lays the 6.75kg flaxen fiber in the raw material middle part.
(4) hot-forming, pressure is 20MPa, and temperature is 200 ℃, and the time is 30min.
(5) low-temperature shaped, pressure is 20MPa, and temperature is 80 ℃, and the time is 15min.
(6) sheet material of preparation is sawed limit, sanding, make standard-sized finished product sheet material.
Wherein SAN foamed plastic waste powder is a 20-100 order powder.The gained panel density is 1000kg/m
3Sheet material, water absorption rate 0.34%, shock strength 9.12kJ/m
2, compression strength 79.65MPa, bending strength 37.46MPa.
(1) the SAN foamed plastic waste is cleaned up, be cut into 0.5-2cm then
3Bulk, block is ground to form 20-100 purpose powder.
(2) take by weighing (1) middle SAN foamed plastic waste powder 38.25kg at 100 ℃ of following preheating 30min.
(3) preheating is good raw material is put into the hot press mould, and evenly lays the 6.75kg flaxen fiber in the raw material middle part.
(4) hot-forming, pressure is 20MPa, and temperature is 200 ℃, and the time is 20min.
(5) sheet material of preparation is sawed limit, sanding, make standard-sized finished product sheet material.
Wherein SAN foamed plastic waste powder is a 20-100 order powder.The gained panel density is 1000kg/m
3Sheet material, water absorption rate 0.21%, shock strength 7.68kJ/m
2, compression strength 76.65MPa, bending strength 34.28MPa.
Embodiment 3:
(1) the SAN foamed plastic waste is cleaned up, be cut into 0.5-2cm then
3Bulk, block is ground to form 20-100 purpose powder.
(2) take by weighing (1) middle SAN foamed plastic waste powder 38.25kg at 100 ℃ of following preheating 30min.
(3) preheating is good raw material is put into the hot press mould, and evenly lays the 6.75kg flaxen fiber in the raw material middle part.
(4) hot-forming, pressure is 20MPa, and temperature is 200 ℃, and the time is 30min.
(5) low-temperature shaped, pressure is 20MPa, and temperature is 80 ℃, and the time is 15min.
(6) sheet material of preparation is sawed limit, sanding, make standard-sized finished product sheet material.
Wherein SAN foamed plastic waste powder is a 20-100 order powder.The gained panel density is 1000kg/m
3Sheet material, water absorption rate 0.12%, shock strength 8.62kJ/m
2, compression strength 80.28MPa, bending strength 36.40MPa.
Embodiment 4:
(1) the SAN foamed plastic waste is cleaned up, be cut into 0.5-2cm then
3Bulk, block is ground to form 20-100 purpose powder.
(2) take by weighing (1) middle SAN foamed plastic waste powder 38.25kg at 150 ℃ of following preheating 15min.
(3) preheating is good raw material is put into the hot press mould, and evenly lays the 6.75kg flaxen fiber in the raw material middle part.
(4) hot-forming, pressure is 15MPa, and temperature is 180 ℃, and the time is 15min.
(5) low-temperature shaped, pressure is 10MPa, and temperature is 50 ℃, and the time is 10min.
(6) sheet material of preparation is sawed limit, sanding, make standard-sized sheet material.
Wherein SAN foamed plastic waste powder is a 20-100 order powder, and used flaxen fiber is natural tossa, and tossa is arranged along long limit in the model middle level.The gained panel density is 1000kg/m
3Sheet material, water absorption rate 0.58%, shock strength 15.68kJ/m
2, compression strength 43.20MPa, bending strength 24.42MPa.
Embodiment 5:
(1) the SAN foamed plastic waste is cleaned up, be cut into 0.5-2cm then
3Bulk, block is ground to form 20-100 purpose powder.
(2) take by weighing (1) middle SAN foamed plastic waste powder 40.5kg at 150 ℃ of following preheating 10min.
(3) preheating is good raw material is put into the hot press mould, and evenly lays the 4.5kg flaxen fiber in the raw material middle part.
(4) hot-forming, pressure is 15MPa, and temperature is 180 ℃, and the time is 10min.
(5) low-temperature shaped, pressure is 10MPa, and temperature is 50 ℃, and the time is 10min.
(6) sheet material of preparation is sawed limit, sanding, make standard-sized finished product sheet material.
Wherein SAN foamed plastic waste powder is a 20-100 order powder, and used flaxen fiber is a natural flax fiber, and flax fiber is arranged along long limit in the model middle level.Gained density is 1000kg/m
3Sheet material, water absorption rate 1.01%, shock strength 20.87kJ/m
2, compression strength 51.27MPa, bending strength 34.25MPa.
Embodiment 6:
(1) the SAN foamed plastic waste is cleaned up, be cut into 0.5-2cm then
3Bulk, block is ground to form 20-100 purpose powder.
(2) take by weighing (1) middle SAN foamed plastic waste powder 42.25kg at 170 ℃ of following preheating 10min.
(3) preheating is good raw material is put into the hot press mould, and evenly lays the 2.25kg flaxen fiber in the raw material middle part.
(4) hot-forming, pressure is 10MPa, and temperature is 140 ℃, and the time is 10min.
(5) low-temperature shaped, pressure is 5MPa, and temperature is 30 ℃, and the time is 30min.
(6) sheet material of preparation is sawed limit, sanding, make standard-sized finished product sheet material.
Wherein SAN foamed plastic waste powder is a 20-100 order powder, and used flaxen fiber is a natural remie fiber, and ramee is arranged along long limit in the model middle level.Gained density is 1000kg/m
3Sheet material, water absorption rate 1.5%, shock strength 22.78kJ/m
2, compression strength 55.46MPa, bending strength 36.56MPa.
Embodiment 7:
(1) the SAN foamed plastic waste is cleaned up, be cut into 0.5-2cm then
3Bulk, block is ground to form 20-100 purpose powder.
(2) take by weighing (1) middle SAN foamed plastic waste powder 42.25kg at 170 ℃ of following preheating 20min.
(3) preheating is good raw material is put into the hot press mould, and evenly lays the 2.25kg flaxen fiber in the raw material middle part.
(4) hot-forming, pressure is 5MPa, and temperature is 150 ℃, and the time is 5min.
(5) low-temperature shaped, pressure is 5MPa, and temperature is 20 ℃, and the time is 15min.
(6) sheet material of preparation is sawed limit, sanding, make standard-sized finished product sheet material.
Wherein SAN foamed plastic waste powder is a 20-100 order powder, and used flaxen fiber is a natural remie fiber, and ramee is arranged along long limit in the model middle level.Gained density is 1000kg/m
3Sheet material, water absorption rate 1.3%, shock strength 23.68kJ/m
2, compression strength 55.32MPa, bending strength 37.06MPa.
More than the present invention has been done exemplary description; should be noted that; under the situation that does not break away from core of the present invention, the replacement that is equal to that any simple distortion, modification or other those skilled in the art can not spend creative work all falls into protection scope of the present invention.
Claims (5)
1. a natural fiber strengthens thermosetting foam plastics castoff regenerative composite board, it is characterized in that the three-layer composite board material that it is made up of thermosetting foam plastics, natural fiber and thermosetting foam plastics; Thermosetting foam plastics is discarded SAN foamed plastics.
2. the utilize natural fiber and the thermosetting foam plastics discarded object of claim 1 prepare the method for composite board, it is characterized in that step is as follows:
1) discarded SAN foamed plastic waste is cleaned up; SAN foamed plastics after cleaning is ground to form 20-100 purpose powder;
2) with above-mentioned powder 100-170 ℃ of following preheating, the time is 10-30min;
3) preheating is good raw material is put into the hot press mould, and evenly lays the natural flaxen fiber of one deck in the raw material middle part; The mass percent of thermosetting foam plastics discarded object and natural fiber is 85-95: 5-15;
4) hot press is 5-20MPa at pressure, and temperature is 140-200 ℃, and the time is hot-forming under the condition of 5-30min.
3. method as claimed in claim 2 is characterized in that the sheet material after the step 4) moulding is carried out low-temperature shaped, and wherein pressure is 5-20MPa, and temperature is 20-80 ℃, and the time is 15-30min.
4. method as claimed in claim 2 is characterized in that step 1) is that discarded SAN foamed plastic waste is cut into the 0.5-2cm that is easy to grind
3Bulk, be ground into 20-100 purpose powder then.
5. method as claimed in claim 2 is characterized in that described natural fiber is tossa, flax fiber or ramee.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101348935A CN102218855A (en) | 2011-05-23 | 2011-05-23 | Composite board prepared from natural fiber and thermosetting foam plastic waste and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101348935A CN102218855A (en) | 2011-05-23 | 2011-05-23 | Composite board prepared from natural fiber and thermosetting foam plastic waste and preparation method thereof |
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| CN102218855A true CN102218855A (en) | 2011-10-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705833A (en) * | 2018-04-18 | 2018-10-26 | 广西理工职业技术学院 | Hard polyvinyl chloride foaming energy-saving board |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01171941A (en) * | 1987-12-28 | 1989-07-06 | Shin Kobe Electric Mach Co Ltd | Multi-layer sheet |
| JPH1171941A (en) * | 1997-07-04 | 1999-03-16 | Manuf Stephanoise De Transformation Textile Mstt | Connecting mechanism for arched members of tent |
| CN2456900Y (en) * | 2000-12-27 | 2001-10-31 | 刘雄亚 | High performance fire-proof composite floor for passenger train |
| CN101633225A (en) * | 2009-08-07 | 2010-01-27 | 天津大学 | Method for preparing composite board by waste thermosetting foamed plastics |
| CN102049895A (en) * | 2009-10-28 | 2011-05-11 | 瑞鸿复材企业股份有限公司 | Continuous fiber laminated plate and preparation method thereof |
-
2011
- 2011-05-23 CN CN2011101348935A patent/CN102218855A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01171941A (en) * | 1987-12-28 | 1989-07-06 | Shin Kobe Electric Mach Co Ltd | Multi-layer sheet |
| JPH1171941A (en) * | 1997-07-04 | 1999-03-16 | Manuf Stephanoise De Transformation Textile Mstt | Connecting mechanism for arched members of tent |
| CN2456900Y (en) * | 2000-12-27 | 2001-10-31 | 刘雄亚 | High performance fire-proof composite floor for passenger train |
| CN101633225A (en) * | 2009-08-07 | 2010-01-27 | 天津大学 | Method for preparing composite board by waste thermosetting foamed plastics |
| CN102049895A (en) * | 2009-10-28 | 2011-05-11 | 瑞鸿复材企业股份有限公司 | Continuous fiber laminated plate and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108705833A (en) * | 2018-04-18 | 2018-10-26 | 广西理工职业技术学院 | Hard polyvinyl chloride foaming energy-saving board |
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Application publication date: 20111019 |