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A kind of preparation method of waterproof and flame-retardant paper cone, loudspeaker and paper cone

A flame-retardant paper and loudspeaker technology, which is applied in the direction of special paper, natural cellulose pulp/paper, synthetic cellulose/non-cellulose material pulp/paper, etc., can solve the problem of poor flame retardancy, water resistance, and impact on acoustic performance and timbre And other problems, to achieve the effect of good effect, excellent flame retardant and waterproof effect, broad market prospect

Active Publication Date: 2021-12-24
GUOGUANG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a waterproof and flame-retardant paper cone, a loudspeaker and a preparation method for the paper cone, so as to solve the problem of poor flame retardancy and water resistance in the existing paper cone, which affects the acoustic performance. and timbre problems, and minimize the impact on the weight of the paper cone

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment provides a waterproof and flame-retardant paper cone, which specifically includes:

[0045] 40 parts of coniferous wood pulp, 35 parts of hemp pulp, 15 parts of bark pulp, 15 parts of wool pulp, 6 parts of cotton pulp, 3 parts of mineral fiber, 4 parts of cationic styrene-acrylic emulsion, 5 parts of nitrogen-phosphorus flame retardant, water 13000 share.

[0046] Preparation method: Mix coniferous wood pulp, hemp pulp, bark pulp, wool pulp, cotton pulp, mineral fiber and water to form a paper cone after thawing, pulping, hot pressing and punching, and then paint on the back of the paper cone Nitrogen-phosphorus flame retardant, dry in an oven at 120°C for 30 minutes, then apply cationic styrene-acrylic emulsion to the front of the paper cone, and dry in an oven at 105°C for 20 minutes to obtain a waterproof and flame-retardant paper cone.

Embodiment 2

[0048] This embodiment provides a waterproof and flame-retardant paper cone, which specifically includes:

[0049] 35 parts of coniferous wood pulp, 32 parts of hemp pulp, 16 parts of bark pulp, 17 parts of wool pulp, 8 parts of cotton pulp, 2 parts of mineral fiber, 4 parts of paraffin wax emulsion, 3 parts of nitrogen and phosphorus flame retardant, 14000 parts of water.

[0050] Preparation method: Mix coniferous wood pulp, hemp pulp, bark pulp, wool pulp, cotton pulp, mineral fiber and water to form a paper cone after thawing, pulping, hot pressing and punching, and then paint on the back of the paper cone Nitrogen-phosphorus flame retardant, dry in an oven at 130°C for 25 minutes, then apply paraffin wax emulsion to the front of the paper cone, and dry in an oven at 100°C for 25 minutes to obtain a waterproof and flame-retardant paper cone.

Embodiment 3

[0052] This embodiment provides a waterproof and flame-retardant paper cone, which specifically includes:

[0053] 30 parts of coniferous wood pulp, 30 parts of hemp pulp, 10 parts of bark pulp, 10 parts of wool pulp, 10 parts of cotton pulp, 1 part of mineral fiber, 2 parts of fluorine-based acrylic resin, 2 parts of nitrogen-phosphorus flame retardant, water 12000 share.

[0054] Preparation method: Mix coniferous wood pulp, hemp pulp, bark pulp, wool pulp, cotton pulp, mineral fiber and water to form a paper cone after thawing, pulping, hot pressing and punching, and then paint on the back of the paper cone Nitrogen-phosphorus flame retardant, dry in an oven at 110°C for 35 minutes, then apply paraffin wax emulsion to the front of the paper cone, and dry in an oven at 108°C for 15 minutes to obtain a waterproof and flame-retardant paper cone.

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Abstract

The invention provides a method for preparing a waterproof and flame-retardant paper cone, a loudspeaker and a paper cone. The back of the paper cone contains a flame retardant; the waterproof and flame-retardant paper cone provided by the present invention uses a suitable pulp type to ensure the acoustic performance and sound quality of the paper cone. The front side is coated with waterproof agent, and the back is coated with flame retardant, reducing the amount of flame retardant and waterproof agent can effectively control the weight increase of the paper cone within 5%, and will not affect the pulp composition of the paper cone, while avoiding The mixed use of flame retardants and waterproofing agents has the problem of mutual reaction and effect. The flame retardant grade can reach V-0, and the waterproof grade can reach IPX-7. Both flame retardant and waterproof effects are excellent. When applied to speakers, the effect is good. ,Market prospects.

Description

technical field [0001] The invention belongs to the field of electroacoustic technology, and relates to a waterproof and flame-retardant paper cone, a loudspeaker and a preparation method of the paper cone. Background technique [0002] The main raw material of the speaker cone is plant fiber, which is flammable. The heat generated when the loudspeaker is working may cause the paper cone to catch fire and cause a fire, which poses a great potential safety hazard. Therefore, it is necessary to carry out flame retardant treatment on the paper cone. The surface of plant fibers contains a large number of hydroxyl and carboxyl groups, which endow paper with natural hydrophilicity. After the paper absorbs moisture, its appearance and mechanical properties will be seriously affected, so it is necessary to waterproof the paper cone. In addition, more and more audio products are used in harsh environments such as outdoors and underwater, which also requires higher and higher water...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21H11/00D21H11/12D21H13/00D21H13/36D21H21/16D21H17/60D21H17/14D21H21/34D21H17/66D21H19/84D21H19/10D21H19/18H04R31/00
CPCD21H27/00D21H11/00D21H11/12D21H13/00D21H13/36D21H21/16D21H17/60D21H17/14D21H21/34D21H17/66D21H19/84D21H19/10D21H19/18H04R31/00
Inventor 司景航祝少鹏赵有强汪尧双
Owner GUOGUANG ELECTRIC
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