CN104790547A - Feather sound absorption composite board and manufacturing method thereof - Google Patents

Abstract

The invention discloses a feather sound-absorbing composite board and a preparation method thereof. The feather sound-absorbing composite board includes a multi-layer net body formed of feather fibers, jute fibers and polypropylene fibers, and the multi-layer net body is combined by hot pressing forming technology. Integral to form a composite board. The method of producing the feather sound-absorbing composite board: firstly, fully mix the feather fiber, jute fiber and polypropylene fiber; then comb into a net and dry; finally, the multi-layer net body is made into a composite board by hot pressing molding technology. The feather sound-absorbing composite board of the invention has excellent sound-absorbing performance, and the sources of fiber materials are extensive, and is beneficial to the recycling of waste feather fibers.

Description

A kind of feather sound-absorbing composite board and its preparation method

technical field

The invention relates to a feather sound-absorbing composite board and a preparation method thereof, belonging to the fields of construction and textiles.

Background technique

The indoor surfaces of buildings include ceilings, walls and floors. If only hard and dense stones, planks and plasters are used for decoration, these materials will strongly reflect sound waves. On the one hand, the reflected sound will enhance the indoor sound; On the one hand, the reverberation time in the room is prolonged. In this kind of room for class, meeting or cultural performance, although the audience feels the sound is very loud, they only hear a very unclear "rumbling" sound. Therefore, sound-absorbing decoration is generally required indoors, especially in theaters, concert halls, dance halls, cinemas, studios and recording studios. The sound quality of such buildings is very important. The use of sound-absorbing materials to absorb noise is the main measure taken to reduce indoor noise in the construction field.

As a common sound-absorbing material, porous materials have the most varieties and specifications and are most widely used. Inorganic fibrous porous sound-absorbing materials such as glass wool, slag wool, rock wool, and aluminum silicate wool are the most common porous sound-absorbing materials. These materials have the same fiber shape and structure in appearance, and have good sound absorption and heat insulation. , Insulation performance. However, this kind of material also has disadvantages. It needs to consume a lot of energy and mineral materials during production; the fiber is easy to break and fly; the product is easy to generate solid waste after use, is not easy to degrade, will cause pollution to people and the environment, and cannot be reused . Today, with the increasing awareness of environmental protection, such materials are obviously not suitable for large-scale use.

Using the discarded feathers produced by the poultry industry as the main reinforcing fiber in the feather sound-absorbing composite panel can "turn waste into treasure" and reduce the waste of resources. And the feather fiber, the jute fiber and the polypropylene fiber are cheap, which can save the production cost.

Contents of the invention

The object of the present invention is to provide a feather sound-absorbing composite board and a preparation method of the material. The feather sound-absorbing composite board has excellent sound-absorbing performance, flame-retardant performance and heat-insulating performance, and the fiber material has a wide range of sources and can be recycled, which is beneficial to environmental protection.

In order to achieve the above object, the present invention adopts the following designs: a feather sound-absorbing composite panel: it is characterized in that: it comprises a multi-layer net body formed by feather fibers, jute fibers and polypropylene fibers, and the multi-layer net body passes through The polypropylene fiber is melted and hot-pressed to form a composite board.

The components of the net material are: 0-50 parts of feather fiber, 50-0 parts of jute fiber, and 50 parts of polypropylene fiber.

The invention provides a preparation method of the feather sound-absorbing composite board, comprising the following steps:

1) 0-50 parts of feather fiber, 50-0 part of jute fiber, and 50 parts of polypropylene fiber are fully mixed and fed into a carding machine for 4 times to form a net;

2) Lay the net body layer by layer to form a multi-layer net body;

3) Place the multi-layer mesh body on a heating plate at 115°C for 24 hours to ensure that the existing moisture is removed;

4) cutting the dried multi-layer mesh body into pieces with a mold and stacking the mesh body to obtain the required weight/unit area (Kg/m ² );

5) The pressing plate is pressurized to the required specific pressure and preset temperature, and pressurized for a certain period of time;

6) Release the pressure after cooling the pressing plate to a lower temperature, and take out the composite plate.

The feather fiber in the step 1) is a waste product of poultry enterprises.

The pressing pressure of the pressing plate in the step 4) is 0.5-1.5 MPa, the pressing plate temperature is 165-185° C. (the melting temperature of the polypropylene core is 160° C.), and the compression time is 3-9 minutes.

Detailed ways

The present invention will be further described below in conjunction with example:

Example 1:

The components contained in the raw material are: feather fiber, jute fiber, and polypropylene fiber; parts by weight are: 50, 0, and 50, respectively.

Preparation steps:

1) Feather fiber, jute fiber and polypropylene fiber are fully mixed in proportion and then fed into a carding machine for 4 times to be carded into a net body;

2) Lay the net body layer by layer to form a multi-layer net body;

3) Place the multi-layer mesh body on a heating plate at 115°C for 24 hours to ensure that the existing moisture is removed;

4) cutting the dried multi-layer mesh body into pieces with a mold and stacking the mesh body to obtain the required weight/unit area (Kg/m ² );

5) The pressure of the pressing plate is 0.5 MPa, the temperature of the pressing plate is 165°C, and the pressing time is 3 minutes, and the mesh body is compressed and formed;

6) Release the pressure after cooling the pressing plate to a lower temperature, and take out the composite plate.

Example 2:

The components contained in the raw material are: feather fiber, jute fiber and polypropylene fiber; parts by weight are: 37.5, 12.5 and 50 respectively.

Preparation steps:

1) Feather fiber, jute fiber and polypropylene fiber are fully mixed in proportion and then fed into a carding machine for 4 times to be carded into a net body;

2) Lay the net body layer by layer to form a multi-layer net body;

3) Place the multi-layer mesh body on a heating plate at 115°C for 24 hours to ensure that the existing moisture is removed;

4) cutting the dried multi-layer mesh body into pieces with a mold and stacking the mesh body to obtain the required weight/unit area (Kg/m ² );

5) The pressure of the pressing plate is 0.5 MPa, the temperature of the pressing plate is 165°C, and the pressing time is 3 minutes, and the mesh body is compressed and formed;

6) Release the pressure after cooling the pressing plate to a lower temperature, and take out the composite plate.

Example 3:

The components contained in the raw material are: feather fiber, jute fiber and polypropylene fiber; parts by weight are: 25, 25 and 50 respectively.

Preparation steps:

1) Feather fiber, jute fiber and polypropylene fiber are fully mixed in proportion and then fed into a carding machine for 4 times to be carded into a net body;

2) Lay the net body layer by layer to form a multi-layer net body;

3) Place the multi-layer mesh body on a heating plate at 115°C for 24 hours to ensure that the existing moisture is removed;

4) cutting the dried multi-layer mesh body into pieces with a mold and stacking the mesh body to obtain the required weight/unit area (Kg/m ² );

5) The pressure of the pressing plate is 0.5 MPa, the temperature of the pressing plate is 165°C, and the pressing time is 3 minutes, and the mesh body is compressed and formed;

6) Release the pressure after cooling the pressing plate to a lower temperature, and take out the composite plate.

Claims (4)

1. A feather sound-absorbing composite panel is characterized in that: the material is a composite panel formed by multi-layer net body thermocompression, and the net body is made by mixing feather fiber, jute fiber and polypropylene fiber. 2. The feather sound-absorbing composite panel according to claim 1, characterized in that: the components and parts by weight of the mesh material are: 0-50 parts of feather fiber, 50-0 part of jute fiber, polypropylene fiber 50 servings. 3. A method for preparing the feather sound-absorbing composite panel as claimed in claim 1: it is characterized in that: the method comprises the following steps: 1) 0-50 parts of feather fiber, 50-0 part of jute fiber, and 50 parts of polypropylene fiber are fully mixed and fed into a carding machine for 4 times to form a net; 2) Lay the net body layer by layer to form a multi-layer net body; 3) Place the multi-layer mesh body on a heating plate at 115°C for 24 hours to ensure that the existing moisture is removed; 4) cutting the dried multi-layer mesh body into pieces with a mold and stacking the mesh body to obtain the required weight/unit area (Kg/m ² ); 5) The pressing plate is pressurized to the required specific pressure and preset temperature, and pressurized for a certain period of time; 6) Release the pressure after cooling the pressing plate to a lower temperature, and take out the composite plate. 4. The preparation method of the feather sound-absorbing composite board according to claim 3, characterized in that: the feather fiber in the step 1) is a waste product of poultry enterprises; the pressing pressure of the pressing plate in the step 4) is 0.5-1.5MPa, the platen temperature is 165-185°C (the melting temperature of the polypropylene core is 160°C), and the compression time is 3-9min.