CN110802888A - Straw-polypropylene fiber composite material and production process thereof - Google Patents
Straw-polypropylene fiber composite material and production process thereof Download PDFInfo
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- CN110802888A CN110802888A CN201911074845.4A CN201911074845A CN110802888A CN 110802888 A CN110802888 A CN 110802888A CN 201911074845 A CN201911074845 A CN 201911074845A CN 110802888 A CN110802888 A CN 110802888A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/06—Vegetal fibres
- B32B2262/062—Cellulose fibres, e.g. cotton
- B32B2262/065—Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/14—Mixture of at least two fibres made of different materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2571/00—Protective equipment
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention relates to the field of wood-plastic composite materials, and discloses a straw-polypropylene fiber composite material which comprises, by mass, 70-80% of straw, 10-15% of coconut fiber, 5-10% of polypropylene fiber and 5-10% of water-based spray glue; also discloses a production process thereof, which comprises the steps of crushing coconut palm, polypropylene fiber and straws with the water content of 5-10 percent, and mixing to obtain coarse materials; spreading the coarse material on lining cloth, and needling to obtain a layered prefabricated product; and then, hot-pressing and molding the paper and the prefabricated product by using a hot press, wherein the hot pressing pressure is 7-9MPa, the hot pressing time is 2-6s, and the hot pressing temperature is 110-170 ℃. The straw of the invention does not need to be modified, and the crushed straw is fixed by coconut palm, thereby greatly reducing the use amount of polypropylene fiber, and reducing the degradation time of the existing wood-plastic composite material while not damaging the mechanical property of the invention.
Description
Technical Field
The invention relates to the field of wood-plastic composite materials, in particular to a straw-polypropylene fiber composite material and a production process thereof.
Background
The wood-plastic composite material is a composite material formed by a wood material and thermosetting plastic or thermoplastic plastic through an extrusion method, an injection molding method and a pressing method. Wherein the thermosetting plastics comprise epoxy resin, phenolic resin and the like, and the thermoplastic plastics comprise polyethylene, polypropylene, polyvinyl chloride and copolymers thereof and return materials thereof. The wood material includes wood powder, rice bran powder, peanut shell powder, sugarcane, coconut shell powder, etc.
The straw is one of plant resources widely existing in the nature, has good flexibility and excellent strength, and is a degradable renewable green material with wide application value. The ancient times of China have the tradition of using plant resources to manufacture articles for daily use and building materials. The appearance of the high polymer material opens up a wide space for deeply developing and utilizing plant resources, and the high polymer material is compounded with the straws, so that the material can be endowed with proper decomposability, the renewable plant resources are fully utilized, and the consumption of the non-renewable resources is reduced.
Polypropylene is a hydrophobic polymer material, and has been reported in the production of straw and polymer composites. However, in the prior art, the polypropylene is required to be grafted in most of the composite materials of straw and polypropylene, such as patent application No. 200910071983.7; or modifying straw, and hot pressing the modified straw and polypropylene, as disclosed in patent application No. 201510516595.0.
However, such a polymer material as polypropylene is difficult to degrade, and only by incineration or landfill, it causes serious pollution to water resources, air and soil, and destroys the ecological environment. The straw is used as an agricultural byproduct, the utilization is low, and the environment can be polluted by incineration treatment, so that the economic benefit of the straw can be increased by compounding the straw with the high polymer material, the resource waste is reduced, and the ecological environment is protected.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a straw-polypropylene fiber composite material and a production process thereof.
In order to solve the technical problem, the invention is solved by the following technical scheme:
a straw-polypropylene fiber composite material comprises, by mass, 70-80% of straw, 10-15% of coconut palm, 5-10% of polypropylene fiber and 5-10% of water-based spray glue.
Preferably, the length of the straw is 3-8cm, the thickness of the straw is 0.01-0.5mm, the length of the coconut palm is 8-15cm, and the length of the polypropylene fiber is 3-8 cm.
Preferably, the aqueous spray glue comprises 40-60% of water, 20-30% of acrylate and 20-30% of styrene.
A production process of straw-polypropylene fiber composite material comprises the following steps:
(1) crushing coconut palm, polypropylene fiber and straw with the water content of 5-10%, and mixing to obtain a coarse material;
(2) laying the coarse material on a lining cloth, and needling the coarse material laid on the lining cloth by a needle machine, wherein the needling angle is 60-70 degrees, so as to obtain a layered prefabricated product;
(3) and spraying water-based spray glue on the side of the prefabricated product, which is far away from the lining cloth, placing paper on the side of the prefabricated product, which is close to the non-woven fabric, and then carrying out hot press molding on the paper and the prefabricated product by using a hot press, wherein the hot press pressure is 7-9MPa, the hot press time is 2-6s, and the hot press temperature is 110-170 ℃, so as to obtain the straw-polypropylene fiber composite material.
The invention selects paper which can withstand the temperature of 110-170 ℃, and the weight of the paper is 30-50g/m2The paper is covered under the lining cloth and is hot-pressed with the prefabricated product, after the lining cloth is melted, the paper is attached to the prefabricated product through the lining cloth, so that the toughness of the straw-polypropylene fiber composite material can be improved, the lining cloth melted by hot pressing can be isolated from the hot press, and the straw-polypropylene fiber composite material is prevented from being adhered to the hot press.
The invention selects the straws as the raw materials of the wood-plastic composite material, not only because the straws have large volume and low cost, but also because the straws have higher toughness than the corn straws. However, the straw has a wax layer on its surface, so that it is not good to bond it directly with glue.
The invention utilizes the mixed needling of coconut palm, straw and polypropylene fiber, because the coconut palm is a filamentous substance extracted from coconut shells, and the diameter of the coconut palm is far smaller than that of the straw, the coconut palm can be used for fixing the straw and the polypropylene fiber, and the straw, the straw and the polypropylene fiber are fixed by using the binding action of a rope, at the moment, the coarse material is further fixed by spraying water-based glue spraying, and finally, the straw-polypropylene fiber composite material is obtained by hot press molding.
Preferably, the method further comprises the step of coating a surface of the prefabricated product, which faces away from the lining cloth, on the surface of the prefabricated product, after the water-based glue spraying is carried out on the surface of the prefabricated product, the paper or the cloth is flatly laid on the surface, which faces away from the lining cloth, of the prefabricated product, and the paper or the cloth is adhered to the prefabricated product through the water-based glue spraying.
Preferably, in step (1), the lengths of the crushed straws and the polypropylene fibers are both 3-8cm, the thickness of the crushed straws is 0.01-0.5mm, and the length of the crushed coconut palm is 8-15 cm.
Preferably, in the step (1), the mass percent of the straw is 70-80%, the mass percent of the coconut palm is 10-15%, and the mass percent of the polypropylene fiber is 5-10%.
Preferably, in the step (2), the lining cloth comprises polypropylene non-woven cloth or polyethylene woven bag.
Preferably, in the step (3), the mass percent of the water-based spray glue is 5-10%, and the water-based spray glue comprises 40-60% of water, 20-30% of acrylate and 20-30% of styrene.
Due to the adoption of the technical scheme, the invention has the remarkable technical effects that:
the straw of the invention does not need to be modified, and the crushed straw is fixed by coconut palm, thereby greatly reducing the use amount of polypropylene fiber, and reducing the degradation time of the existing wood-plastic composite material while not damaging the mechanical property of the invention.
The straw-polypropylene fiber composite material also has certain impact resistance, can be used as a protective sleeve for packaging high-end door plates and preventing the door plates from being damaged; in addition, the pearl wool can be replaced when in decoration, and the pearl wool can be paved on the bottom plate to protect the floor.
The invention can adopt various recycled polypropylene fibers and agricultural and sideline products of straw and coconut palm, thus being beneficial to slowing down the pollution of plastic wastes and reducing the pollution of the environment caused by burning agricultural wastes; meanwhile, the usage amount of the polypropylene fiber is far lower than that of the straw, so that the obtained straw-polypropylene fiber composite material meets the requirement of environmental protection better, the production cost is reduced, and the industrial production is facilitated.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
A straw-polypropylene fiber composite material comprises, by mass, 80% of straw, 10% of coconut palm, 5% of polypropylene fiber and 5% of aqueous spray glue.
The length of the straw is 3-8cm, the thickness of the straw is 0.01-0.5mm, the length of the coconut palm is 8-15cm, and the length of the polypropylene fiber is 3-8 cm.
The water-based spray glue comprises 40% of water, 30% of acrylate and 30% of styrene.
A production process of straw-polypropylene fiber composite material comprises the following steps:
(1) crushing coconut palm, polypropylene fiber and straw with the water content of 5-10%, and mixing to obtain a coarse material;
(2) laying the coarse material on a lining cloth, and needling the coarse material laid on the lining cloth by a needle machine, wherein the needling angle is 60 degrees to obtain a layered prefabricated product;
(3) and spraying water-based spray glue on the side of the prefabricated product, which is far away from the lining cloth, placing paper on the side of the prefabricated product, which is close to the non-woven fabric, and then carrying out hot press molding on the paper and the prefabricated product by using a hot press, wherein the hot press pressure is 7MPa, the hot press time is 6s, and the hot press temperature is 170 ℃, so as to obtain the straw-polypropylene fiber composite material.
In the step (1), the lengths of the crushed straws and the polypropylene fibers are both 3-8cm, the thickness of the crushed straws is 0.01-0.5mm, and the length of the crushed coconut palm is 8-15 cm.
In the step (1), the mass percent of the straw is 80%, the mass percent of the coconut palm is 10% and the mass percent of the polypropylene fiber is 5%.
In the step (2), the lining cloth comprises polypropylene non-woven fabric.
In the step (3), the mass percent of the water-based spray adhesive is 5%, and the water-based spray adhesive comprises 40% of water, 30% of acrylate and 30% of styrene.
Example 2
A straw-polypropylene fiber composite material comprises, by mass, 70% of straw, 15% of coconut palm, 5% of polypropylene fiber and 10% of aqueous spray glue.
The length of the straw is 3-8cm, the thickness of the straw is 0.01-0.5mm, the length of the coconut palm is 8-15cm, and the length of the polypropylene fiber is 3-8 cm.
The water-based spray glue comprises 60% of water, 20% of acrylate and 20% of styrene.
A production process of straw-polypropylene fiber composite material comprises the following steps:
(1) crushing coconut palm, polypropylene fiber and straw with the water content of 5-10%, and mixing to obtain a coarse material;
(2) laying the coarse material on a lining cloth, and needling the coarse material laid on the lining cloth by a needle machine, wherein the needling angle is 70 degrees to obtain a layered prefabricated product;
(3) and spraying water-based spray glue on the side of the prefabricated product, which is far away from the lining cloth, placing paper on the side of the prefabricated product, which is close to the non-woven fabric, and then carrying out hot press molding on the paper and the prefabricated product by using a hot press, wherein the hot press pressure is 8MPa, the hot press time is 4s, and the hot press temperature is 140 ℃, so as to obtain the straw-polypropylene fiber composite material.
The surface coating film is coated on the prefabricated product and is away from the lining cloth, after the water-based glue spraying is carried out on the surface of the prefabricated product, the paper is flatly laid on the surface, away from the lining cloth, of the prefabricated product, and the paper is adhered to the prefabricated product through the water-based glue spraying.
In the step (1), the lengths of the crushed straws and the polypropylene fibers are both 3-8cm, the thickness of the crushed straws is 0.01-0.5mm, and the length of the crushed coconut palm is 8-15 cm.
In the step (1), the mass percent of the straw is 70%, the mass percent of the coconut palm is 15% and the mass percent of the polypropylene fiber is 5%.
In the step (2), the lining cloth comprises a polyethylene woven bag.
In the step (3), the mass percent of the water-based spray adhesive is 10%, and the water-based spray adhesive comprises 60% of water, 20% of acrylic ester and 20% of styrene.
Example 3
A straw-polypropylene fiber composite material comprises 75% of straw, 10% of coconut palm, 10% of polypropylene fiber and 5% of water-based spray glue by mass percent.
The length of the straw is 3-8cm, the thickness of the straw is 0.01-0.5mm, the length of the coconut palm is 8-15cm, and the length of the polypropylene fiber is 3-8 cm.
The water-based spray glue comprises 50% of water, 25% of acrylate and 25% of styrene.
A production process of straw-polypropylene fiber composite material comprises the following steps:
(1) crushing coconut palm, polypropylene fiber and straw with the water content of 5-10%, and mixing to obtain a coarse material;
(2) laying the coarse material on a lining cloth, and needling the coarse material laid on the lining cloth by a needle machine at a needling angle of 65 degrees to obtain a layered prefabricated product;
(3) and spraying water-based spray glue on the side of the prefabricated product, which is far away from the lining cloth, placing paper on the side of the prefabricated product, which is close to the non-woven fabric, and then carrying out hot press molding on the paper and the prefabricated product by using a hot press, wherein the hot press pressure is 9MPa, the hot press time is 2s, and the hot press temperature is 110 ℃, so as to obtain the straw-polypropylene fiber composite material.
The surface coating film is coated on the prefabricated product and deviates from the lining cloth, after the water-based glue spraying is carried out on the surface of the prefabricated product, the cloth is flatly laid on the surface of the prefabricated product, which deviates from the lining cloth, and the cloth is adhered to the prefabricated product through the water-based glue spraying.
In the step (1), the lengths of the crushed straws and the polypropylene fibers are both 3-8cm, the thickness of the crushed straws is 0.01-0.5mm, and the length of the crushed coconut palm is 8-15 cm.
In the step (1), the mass percent of the straw is 75%, the mass percent of the coconut palm is 10%, and the mass percent of the polypropylene fiber is 10%.
In the step (2), the lining cloth comprises polypropylene non-woven fabric.
In the step (3), the mass percent of the water-based spray glue is 5%, and the water-based spray glue comprises 50% of water, 25% of acrylate and 25% of styrene.
Comparative example 1
The same as example 3, except that the straw-polypropylene fiber composite material of the present comparative example, excluding coconut coir, comprised 75% of straw, 10% of polypropylene fiber and 15% of aqueous spray glue in mass%.
Comparative example 2
The same as example 3 except that the comparative example has 75% of straw, 2% of coconut palm, 10% of polypropylene fiber and 13% of water-based spray glue by mass percentage.
Comparative example 3
The difference from example 3 is that in this comparative example, the length of straw is less than 1cm, the length of coconut palm is greater than 18cm, and the length of polyester fiber is less than 2.5 cm.
Comparative example 4
The difference from example 3 is that in this comparative example, the length of the straw is greater than 8cm, the length of the coconut palm is less than 5cm, and the length of the polyester fiber is greater than 7 cm.
Compared with comparative examples 1-4, the straw-polypropylene fiber composite material obtained in example 3 can be bonded to form a whole, while the straw-polypropylene fiber composite material obtained in comparative examples 1-4 is loose and cannot be molded, and cannot be applied to packaging or laying on the surface of an article needing anti-collision or anti-scratch.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.
Claims (9)
1. A straw-polypropylene fiber composite material is characterized in that: comprises 70-80% of straw, 10-15% of coconut palm, 5-10% of polypropylene fiber and 5-10% of water-based spray glue by mass percentage.
2. The straw-polypropylene fiber composite material of claim 1, wherein: the length of the straw is 3-8cm, the thickness of the straw is 0.01-0.5mm, the length of the coconut palm is 8-15cm, and the length of the polypropylene fiber is 3-8 cm.
3. The straw-polypropylene fiber composite material of claim 1, wherein: the water-based spray glue comprises 40-60% of water, 20-30% of acrylate and 20-30% of styrene.
4. A production process of straw-polypropylene fiber composite material is characterized by comprising the following steps:
(1) crushing coconut palm, polypropylene fiber and straw with the water content of 5-10%, and mixing to obtain a coarse material;
(2) laying the coarse material on a lining cloth, and needling the coarse material laid on the lining cloth by a needle machine, wherein the needling angle is 60-70 degrees, so as to obtain a layered prefabricated product;
(3) and spraying water-based spray glue on the side of the prefabricated product, which is far away from the lining cloth, placing paper on the side of the prefabricated product, which is close to the non-woven fabric, and then carrying out hot press molding on the paper and the prefabricated product by using a hot press, wherein the hot press pressure is 7-9MPa, the hot press time is 2-6s, and the hot press temperature is 110-170 ℃, so as to obtain the straw-polypropylene fiber composite material.
5. The process for producing straw-polypropylene fiber composite material as claimed in claim 4, wherein: the surface coating film which is far away from the lining cloth is arranged on the prefabricated product, after the water-based glue spraying is carried out on the surface of the prefabricated product, the paper or the cloth is flatly laid on the surface, far away from the lining cloth, of the prefabricated product, and the paper or the cloth is adhered to the prefabricated product through the water-based glue spraying.
6. The process for producing straw-polypropylene fiber composite material as claimed in claim 4, wherein: in the step (1), the lengths of the crushed straws and the polypropylene fibers are both 3-8cm, the thickness of the crushed straws is 0.01-0.5mm, and the length of the crushed coconut palm is 8-15 cm.
7. The process for producing straw-polypropylene fiber composite material as claimed in claim 4, wherein: in the step (1), the mass percent of the straw is 70-80%, the mass percent of the coconut palm is 10-15%, and the mass percent of the polypropylene fiber is 5-10%.
8. The process for producing straw-polypropylene fiber composite material as claimed in claim 4, wherein: in the step (2), the lining cloth comprises polypropylene non-woven fabrics or polyethylene woven bags.
9. The process for producing straw-polypropylene fiber composite material as claimed in claim 4, wherein: in the step (3), the mass percent of the water-based spray adhesive is 5-10%, and the water-based spray adhesive comprises 40-60% of water, 20-30% of acrylate and 20-30% of styrene.
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| CN201911074845.4A CN110802888A (en) | 2019-11-06 | 2019-11-06 | Straw-polypropylene fiber composite material and production process thereof |
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| CN201911074845.4A CN110802888A (en) | 2019-11-06 | 2019-11-06 | Straw-polypropylene fiber composite material and production process thereof |
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| CN1368913A (en) * | 1999-08-13 | 2002-09-11 | 麦特索控制板有限公司 | Method and device for producing moulded parts |
| CN2526165Y (en) * | 2001-11-21 | 2002-12-18 | 刘东立 | Thermoplastic three-layer composite board made of natural fibre |
| CN2750921Y (en) * | 2004-12-29 | 2006-01-11 | 北京林枫园林绿化工程有限公司 | Ecologic vegetation blanket |
| CN104695453A (en) * | 2014-12-09 | 2015-06-10 | 郑州冠达建筑材料有限公司 | Environment-friendly ecological blanket made of plant fibers |
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2019
- 2019-11-06 CN CN201911074845.4A patent/CN110802888A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1368913A (en) * | 1999-08-13 | 2002-09-11 | 麦特索控制板有限公司 | Method and device for producing moulded parts |
| CN1311361A (en) * | 2001-02-27 | 2001-09-05 | 东华大学 | Forming process and its equipment for straw fibre felt |
| CN2526165Y (en) * | 2001-11-21 | 2002-12-18 | 刘东立 | Thermoplastic three-layer composite board made of natural fibre |
| CN2750921Y (en) * | 2004-12-29 | 2006-01-11 | 北京林枫园林绿化工程有限公司 | Ecologic vegetation blanket |
| CN104695453A (en) * | 2014-12-09 | 2015-06-10 | 郑州冠达建筑材料有限公司 | Environment-friendly ecological blanket made of plant fibers |
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