CN110183801B

CN110183801B - Artificial high polymer material flute diaphragm

Info

Publication number: CN110183801B
Application number: CN201910343565.2A
Authority: CN
Inventors: 杨柳
Original assignee: Shanghai Dunlu Bio Medicine Technology Co ltd
Current assignee: Shanghai Dunlu Bio Medicine Technology Co ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2021-10-26
Anticipated expiration: 2039-04-26
Also published as: CN110183801A

Abstract

The invention discloses a method for manufacturing an artificial high polymer material flute diaphragm. The method is characterized in that: dissolving the water-soluble high molecular polymer in water to prepare sol, and drying the sol on the smooth film-forming surface to form a film. After drying, the composite can be cut to prepare a double-layer composite with a proper size, and the composite is peeled off when used, or the high polymer film material is peeled off, and then the composite is cut into a composite with a proper size and packaged, and the composite is directly taken for use. By the invention, the prepared flute diaphragm has the following components: (1) the production has no time limit, (2) the quality is uniform and controllable, and is easy to standardize, (3) the product hardly ages, yellows and becomes crisp along with the change of time in one year, (4) a user does not need to master a professional film pasting technique, (5) the sound color is stable and is not easy to deform during playing, (6) the product is suitable for being conveniently and quickly pasted, and the like.

Description

Artificial high polymer material flute diaphragm

Technical Field

The invention relates to preparation of a flute diaphragm, in particular to a preparation method of an artificial high polymer material flute diaphragm.

Background

The flute diaphragm is an essential element for flute playing, and the traditional flute diaphragm is taken from reed diaphragm or bamboo diaphragm. The natural flute diaphragm has the following defects in six aspects: (1) the material drawing is time-consuming and labor-consuming and is limited by time. For example, reed membranes are the best recognized materials for flute membranes, and require field acquisition, projection, ablation, stripping, removal of the membrane coating, etc., which is cumbersome to operate. Moreover, the reed is collected 4-5 days before the early summer is full of reed, the toughness of the flute membrane fiber is poor in the early period, and the flute membrane is too old and has poor timbre in the late period. The acquisition of the flute diaphragm of one year is only limited to one or two days, and the time requirement is too strict. Therefore, the natural flute diaphragm operation and the material drawing time are greatly limited, and the large-scale production is difficult; (2) the texture of the natural film material is difficult to standardize, the quality is uncontrollable, and the quality of the film manufactured by the same producer is possibly uneven; (3) the natural film also gradually changes in texture over the course of a year, and is subject to moisture and sun protection, and is usually gradually hard and brittle, aged, yellow, and elastic loss under good storage conditions, and even decayed under poor storage conditions. Therefore, at different time points of a year, the played timbre can be different, and compared with other musical instruments without films, the playing stability is easily influenced; (4) the natural flute diaphragm always needs to have a good and super-high diaphragm pasting technique, fine textures need to be pulled out, the diaphragm pasting can be neither too tight nor too loose, the timing and the tightness for pulling out the textures and the grasp of the pasting time point all have challenges for common players, especially beginners; (5) generally, due to the characteristics of natural plant fibers, the elasticity of a natural flute diaphragm is limited, and in order to take the characteristics of bright tone and elasticity into consideration, a certain looseness degree has to be kept when the diaphragm is attached, so that the sound is prevented from being too stuffy. The player often has to adjust the flute diaphragm on the spot, but the action is limited, the adjustment is not long, and the phenomenon can occur until the flute diaphragm is attached again. The hidden trouble needs to be solved by a substitute which can be completely and tightly pasted with a film, but has low film thickness, large elasticity and no stuffy tone. (6) Traditional flute membrane mostly is whole section reed membrane and sells, need select a membrane pipe during the use, cut into the stub, from it cuts the ring form pipe, then suitably pull, the use is loaded down with trivial details, if prepare for the suitable membrane material of size be convenient for directly paste, will greatly simplify the use step, but this demand is difficult to realize to natural membrane material.

Disclosure of Invention

The invention aims to provide a method for manufacturing an artificial polymer flute diaphragm, which can simultaneously solve the six defects of a natural flute diaphragm.

The technical content of the invention is as follows: the aqueous solution is prepared by taking polyvinyl alcohol which is a water-soluble polymer with excellent film-forming property, good film toughness, high tensile strength and strong tear resistance as a main material and taking xanthan gum and hydroxyethyl cellulose as a representative water-soluble cellulose polymer as an auxiliary material. The concentration of the polyvinyl alcohol in the working solution is 0.1-4%, and the preferred concentration is 0.5%; the concentration of xanthan gum is 0-4%, preferably 0.2%; 0-4% of hydroxyethyl cellulose, preferably 0.2% in concentration. Swelling at low temperature, heating to above 60 deg.C after swelling, mixing completely after the polymer is swelled or dissolved, and pouring onto smooth film forming surface with thickness of 0.1-5 mm, preferably 1 mm. After fully drying, if the film-forming surface is a consumable material (such as a smooth plastic film, glassine paper, and the like, hydrophilic and smooth surfaces are preferred, and colloid inhomogeneity caused by surface tension of a hydrophobic surface is avoided), a composite layer (namely a polymer film layer and a film-forming surface consumable material layer) with a proper size can be prepared by cutting to form a product, and the product is peeled off from the film-forming surface when in use; if the film-forming surface is a fixed mold (such as a metal or silica gel surface), peeling off the polymer film material, cutting into a suitable size, packaging, and directly taking out when in use.

By the invention, the prepared flute diaphragm has the following components: (1) the production has no time limit, (2) the quality is uniform and controllable, and is easy to standardize, (3) the product hardly ages, yellows and becomes crisp along with the change of time in one year, (4) a user does not need to master a professional film pasting technique, (5) the sound color is stable and is not easy to deform during playing, (6) the product is suitable for being conveniently and quickly pasted, and the like.

Detailed description of the preferred embodiments

The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.

Example 1

Weighing 0.5 g of polyvinyl alcohol, 0.2 g of xanthan gum and 0.2 g of hydroxyethyl cellulose, adding 96 ml of pure water, stirring at 60 ℃ until swelling and dissolution are uniform to obtain 100 ml of viscous sol, taking a plurality of smooth paper sheets, pouring the sol on a smooth surface, horizontally shaking to flatten the liquid surface, and controlling the sol volume of each paper sheet to make the liquid surface height about 1 mm. Arrange the clean dustless region of ventilation in and dry, after the night, collect dry composite bed, through the hard apparatus of metal, draw the interval of interval about 2 centimetres (each fritter separation in the later stage of being convenient for) at the dry rete parallel of polymer, recycle the paper cutter, cut out the slip that is 2 centimetres with double-deck adhesive from the vertical direction, the encapsulation can. Each time of taking, a small piece of the paste is peeled off, the size of the small piece is about 2 cm by 2 cm, and the paste is light, thin, transparent and flexible. After the flute diaphragm glue is coated around the diaphragm hole according to the conventional method, the flute diaphragm is directly attached to the diaphragm hole completely and naturally in a tight manner without pulling the flute diaphragm to generate fine lines, and if the flute diaphragm is not in a tight manner, the flute diaphragm is properly pulled outwards to be stretched and tightened.

Claims

1. The utility model provides an artifical macromolecular material flute membrane which characterized in that: dissolving a water-soluble high molecular polymer in water to prepare sol, and drying the sol on the surface of a formed film to form the film; the key components are water-soluble cellulose polymer as film forming matrix, which at least contains polyvinyl alcohol as film forming agent and xanthan gum as one of matrix components.

2. The artificial polymer flute diaphragm according to claim 1, wherein: comprises any one or more of hydroxymethyl cellulose, hydroxyethyl cellulose or hydroxypropyl cellulose.

3. The artificial polymer flute diaphragm according to claim 1, wherein: the high molecular polymer containing hydrophilic group monomer accounts for 10-99.9% of the weight of all the substrate raw materials except water in the film substrate; the production steps at least comprise: preparing hydrosol of 0.1-4% concentration of hydrophilic group-containing high molecular polymer, and drying on the surface of the strippable film.