WO2001023662A1

WO2001023662A1 - The method for manufacture of high adsorption fibres and the use of the same

Info

Publication number: WO2001023662A1
Application number: PCT/CN2000/000287
Authority: WO
Inventors: Zhiqun Tang
Original assignee: Zhiqun Tang
Priority date: 1999-09-24
Filing date: 2000-09-21
Publication date: 2001-04-05
Also published as: AU7503600A; CN1255567A; CN1107138C

Abstract

This invention relates to a method for manufacture of high adsorption fibres and the use of the same, it is characterized by the steps of the method, which include that: first of all, the fibres are reacted with an organic compound which has group (a), and loss one small molecule; and then hydrolyzed and carboxylated in an alkaline solution to obtain carboxylates, the general formula of this treatment is expressed by (b) in which, R and R' represent chain of hydrocarbon; X represents N molecule functional groups, such as -C1,-OH,-NH2.

Description

Manufacturing method of fiber with high adsorption force and application thereof

The present invention relates to a method for manufacturing fibers and uses thereof, and more particularly, to a method for manufacturing fibers having high adsorption power and uses thereof.

Background technique

Hygroscopic materials commonly used in the market currently use granular silica gel or powdered quicklime as raw materials, and use air-permeable materials for packaging in small bags. Such packaging sometimes breaks due to collisions or poor packaging materials, causing contamination of the packaged items. Ingestion of hygroscopic materials in food or pharmaceutical packaging often results in injury to the human body.

The moisture absorption rate of the silica gel wet material commonly used in China is as follows:

At a temperature of 25 degrees and a relative humidity of 20%, it is only 8%.

At a temperature of 25 degrees and a relative humidity of 50%, it is only 20%.

At a temperature of 25 degrees and a relative humidity of 90%, it is only 30%.

An object of the present invention is to provide a method for producing a fiber having a high adsorption force which can adsorb and retain a large amount of a solution, odor particles, and free water.

Another object of the present invention is the fiber or fiber product made by the above method, which can be used directly, or various substances can be added to have various functions.

Summary of the Invention

The technical solution to achieve the above objective is: a method for manufacturing a fiber with high adsorption force, and the steps

X

Including: The use of amide organic compounds to react with various fiber materials, that is, organic compounds with-= = ο bond to react with the fibers, and then the fibers are placed in an alkaline solution to hydrolyze and carboxylate. The general formula for the treatment is:

0 0 0

II II OH i;

R -CX + H0 -R '→ R -C-0 -R' + HX ^0H ~> R -C-0 "+ R'-0H where R and R 'represent a hydrocarbon chain; X represents an N molecular functional group, Such as Cl, -OH, -N.

The fiber includes a wood fiber, a cellulose derivative, cotton, and a synthetic polymer mixture, wherein the cellulose derivative is silk or rayon; and the synthetic polymer mixture is selected from the group consisting of polyester and polypropylene. Or nylon. Recognise X

The compound with the-= = ο bond is an acyl compound, and commonly used are acrylamide, polyacrylamide, and cationic amide, which react with the fiber to remove a small molecule first; and then treat it with an alkaline substance. 5〜25%。 In the treatment, the concentration of acrylamide, polyacrylamide, cationic, anionic polyacrylamide, non-cationic acrylamide, polyamidoamine derivatives and the like that can be used is 0.5 to 25%.

The alkaline substances include sodium hydroxide, sodium hypochlorite, potassium hydroxide, and calcium hydroxide. The concentrations of sodium hydroxide, sodium hypochlorite, potassium hydroxide, and calcium hydroxide of commonly used alkaline substances are 0.1 to 40%, which are hydrolyzed and carboxylated to make a carboxylated product.

The fibers treated as described above can be made into the shape and structure of batts, nets, flakes, powders, fabrics, yarns, and porous foams according to different needs. The above-mentioned fiber production methods also include the production of high-absorption fiber products. .

The invention is made of non-toxic and harmless environmentally friendly materials. The adsorption body can be in various shapes and is not easy to cause people to eat by mistake. In case of ingestion into the mouth, it does not cause any harm to the human body.

Best Mode of the Invention

We make a comparative example, using samples 1, 2, 3, and 4, which are all the same natural short fibers. For example, sample 1 uses 10% acrylamide + 10% sodium hydroxide, and sample 2 A 10% acrylamide + 15% sodium hydroxide was used, a sample 3 was a 20% acrylamide + 20% sodium hydroxide, and a sample 4 was left untreated. Compared with the untreated sample 4, the carboxyl content, the water adsorption amount, the water retention amount, and the particulate adsorption amount of the treated samples 1, 2, and 3, the sample 4 had the lowest carboxyl group content, which is sample 1 in this order. twenty three. Of course, in the production of products, we can use pure natural substances with the same properties and non-toxic and harmless substances to the human body to replace the harmful substances in the experiment to ensure that the present invention fully meets the requirements of environmentally friendly products and is non-toxic and harmless to the human body.

Industrial applicability

The use space of the present invention is quite large, and many industries are involved, for example:

(1) The new preservative is added to the adsorption body by edible alcohol, fatty acids, etc., and put it into the food packaging to slowly volatilize, so that those molds mixed with the packaging bags and microorganisms that may lead to food poisoning can not be reproduced Play a role in inhibiting primary bacteria. Films can also be compounded on its surface to control the rate of evaporation to extend its freshness time. This product can be said to be a new generation of food preservation technology that is harmless to the human body. The use of new preservatives is in full compliance with the International Product Liability Law (PL Law) implemented in 1995.

The PL method is based on the existence of defects in the product to determine whether there is liability for damages. Even if consumers cause accidents or damage due to improper use, they are considered to be defective. Antioxidant-based preservative As a safer fresh-keeping technology, it has been rapidly popularized in recent years. However, preservatives in small bags may cause accidental consumption and cause harm to national health. In addition, there are also problems in environmental protection. Some countries do not allow manufacturing and sales. The new preservatives have solved these problems faced by traditional preservatives according to unprecedented new concepts and new technologies. The ingredients of the new preservative are edible alcohol and edible fatty acids. The adsorption body can be in the shape of a paper sheet, which is not easy to cause ingestion, and if it is ingested into the mouth, it has no negative impact on the human body. Therefore, it is a food preservation technology that perfectly realizes food safety in the era of product liability law, and its basic materials are made using the present invention.

(2) High-efficiency hygroscopic material: make the adsorption body into a multilayer (like wafer) body, and then add hygroscopic materials (such as activated alumina, calcium chloride, etc.) to make it have a strong hygroscopic function. High-performance absorbent tablets can be used as commonly used moisture-proof items, such as in the packaging of food, medicines or other moisture-resistant items.

The moisture absorption rate of the present invention is experimentally as follows:

At a temperature of 25 degrees and a relative humidity of 20%, it can reach 22%.

At a temperature of 25 degrees and a relative humidity of 50%, it can reach 41%.

At a temperature of 25 degrees and a relative humidity of 90%, it can reach 110%.

(Under the same conditions, the moisture absorption capacity is more than 3 times that of silica gel)

Therefore, the present invention can completely solve the technical disadvantages of the original absorbent product. The basic material is made using the present invention.

(3) New fragrance tablet: the adsorption body is made into a multilayered wafer-like structure, and perfume or volatile fragrance is added into the structure. This scent tablet can be placed on the inside of clothes or other items, so that it has the function of long-term volatile fragrance. Perfume is in direct contact with the human body and emits fragrance through volatilization. On the one hand, it can cause skin irritation in some people, and some materials or inferior products can directly harm the human body; on the other hand, perfume does not perform its actual function when used for people who sweat less or in colder regions. . The new fragrance tablets can avoid the adverse reactions caused by the direct contact of the perfume with the human body, and can emit longer-lasting and more stable scent. The basic material is produced by the present invention.

(4) Deodorizing insole: The adsorption body is made into an insole shape, and deodorant and moisture-proof substances are added to make it into a highly effective moisture-proof and deodorizing insole, which can be used repeatedly after being sun-dried.

(5) Hygienic materials: The absorbent body is used as a sweat-absorbing material for diapers, menstrual supplies, bandages, incontinence pads, wound dressings, and underwear. Because of its strong adsorption capacity, an effective amount of molecular sieve is added to make it possess a large amount of It absorbs liquid and keeps the liquid in the adsorption body without direct contact with human skin. In addition, it has the property of removing the odor of body fluid to be adsorbed.

(6) Preservative: Add deoxidizer, anti-moth agent, anti-mold agent to the adsorption body to make it stronger Corresponding functions and can be made into various shapes as required.

The highly-absorbent fiber material produced by the present invention uses this material as an adsorption body and utilizes different processing methods to make it have different shapes, functions, and uses. It has a wide range of practical use values in all areas of society.

Claims

Rights request

1. A method for making a fiber with high adsorption force, characterized in that the steps of the method include:

X

The fiber is first reacted with an organic compound with a-= 0 bond to remove a small molecule, and then hydrolyzed and carboxylated in an alkaline solution to form a carboxylated product. The general formula for the treatment is:

R -CX + H0 -R'- R -C-0 -R '+ HX ^0H ">R—C'— 0- + R'-OH where R and R 'represent the hydrocarbon chain; X represents the functional group of the N molecule , Such as -Cl, -0H, -NH ₂ .

2. The manufacturing method according to claim 1, wherein the fiber is a wood fiber, a cellulose derivative, cotton, a synthetic polymer mixture, and the alkaline substance is sodium hydroxide, sodium hypochlorite,

X

For potassium hydroxide, the compound having a bond = ο is an acyl compound, and commonly used are acrylamide, polyacrylamide, and cationic amide.

3. The method according to claim 2, wherein the cellulose derivative is silk or rayon.

4. The manufacturing method according to claim 2, wherein: the synthetic polymer mixture is selected from the group consisting of polyester, polypropylene, and nylon.

5. The method according to claim 2, wherein the commonly used alkaline substances include sodium hydroxide, sodium hypochlorite, potassium hydroxide and calcium hydroxide.

6. The manufacturing method according to claim 2, characterized in that the concentration of acrylamide, polyacrylamide, cationic, anionic polyacrylamide, non-cationic acrylamide, and polyamidoamine derivative is 0.5 to 25%, commonly used 1〜 40%。 The concentration of sodium hydroxide, sodium hypochlorite, potassium hydroxide and calcium hydroxide of the basic substance is 0.1 to 40%.

7. The manufacturing method according to claim 2, characterized in that: the fiber material can be made into the shape and structure of a batt, a net, a sheet, a powder, a fabric, a spinning thread, and a porous foam according to different needs.

8. Use of fibers obtained by a method for producing fibers with high adsorption power, characterized in that: used as a desiccant, a freshener, a deoxidizer, a preservative, a deodorant, an anti-moth agent, an anti-mold agent, Medical and sanitary products, or base absorbent materials made into perfumed or smoked tablets with a long-lasting fragrance.

9. The use of the obtained fiber according to claim 8, characterized in that it is used as an extension medicine, Health care products, food, textiles, archival materials, tobacco, tea, electronics, celebrities and calligraphy, cultural relics, antiques, military supplies, precision adsorption materials for shelf life.

10. The use of the obtained fiber according to claim 8, characterized in that it is used as a basic adsorption material for preventing moisture and odor.

1 1. The use of the obtained fiber according to claim 8, characterized in that it is used as a sweat-absorbing and moisture-absorbing material in clothing and accessories or in combination with other textiles to make new textile raw materials.