CN103498273B - Shell fabric of blending bamboo fibers and polyesters - Google Patents

Abstract

The invention discloses a bamboo fiber and polyester blended fabric, which is made of 5-30wt% bamboo fiber and 70-95wt% polyester blended fabric. The bamboo fiber and polyester blended fabric of the present invention has good antibacterial performance, high strength, wear resistance, good drapability, soft hand feeling, comfortable and cool wearing, and good air permeability.

Description

Bamboo and polyester blended fabric

technical field

The invention relates to a fabric, in particular to a bamboo fiber and polyester blended fabric.

Background technique

Polyester is an important variety of synthetic fibers and is the trade name of polyester fibers in my country. It is a fiber-forming high polymer prepared from purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) through esterification or transesterification and polycondensation reactions— - Polyethylene terephthalate (PET), fibers made by spinning and post-processing.

The basic component of polyester is polyethylene terephthalate, so it is also called polyester fiber (PET), and its relative molecular weight is generally around 18000-25000. In fact, there are also small amounts of monomers and oligomers present. These oligomers have a low degree of polymerization and exist in a cyclic form. Polyethylene terephthalate can be produced by polycondensation of terephthalic acid (PTA) and ethylene glycol (EG) through direct esterification to obtain ethylene terephthalate (9BHET).

From the perspective of polyester molecular composition, it is composed of short aliphatic hydrocarbon chains, ester groups, benzene rings, and terminal alcohol hydroxyl groups. In addition to the existence of two terminal alcohol hydroxyl groups in polyester seeds, there are no other polar groups, so the hydrophilicity of polyester fibers is extremely poor. Polyester molecules contain about 46% ester groups, which can undergo hydrolysis and thermal cracking at high temperatures, and saponolysis in case of alkali, reducing the degree of polymerization; polyester molecules also contain aliphatic hydrocarbon chains, which can make polyester molecules have a certain Flexibility, but because there are benzene rings in the polyester molecule that cannot rotate internally, the polyester macromolecule is basically a rigid molecule, and the molecular chain is easy to maintain a linear shape. Therefore, polyester macromolecules are easy to form crystals under this condition, so the crystallinity and orientation of polyester are relatively high.

Polyester has the following characteristics:

1. High strength. The short fiber strength is 2.6-5.7cN/dtex, and the high-strength fiber is 5.6-8.0cN/dtex. The wet strength is basically the same as the dry strength. The impact strength is 4 times higher than that of nylon and 20 times higher than that of viscose fiber.

2. Good elasticity. The elasticity is close to that of wool, and when it is stretched by 5%-6%, it can be almost completely recovered. The wrinkle resistance exceeds other fibers, that is, the fabric does not wrinkle and has good dimensional stability. The modulus of elasticity is 22-141cN/dtex, which is 2-3 times higher than nylon. Polyester fabric has high strength and elastic recovery ability, so it is durable, wrinkle-resistant and non-ironing.

3. Heat-resistant polyester is made by melt-spinning method, and the formed fiber can be heated and melted again, which belongs to thermoplastic fiber. The melting point of polyester is relatively high, and the specific heat space and thermal conductivity are small, so the heat resistance and heat insulation of polyester fiber are higher. It is the best among synthetic fibers.

4. The surface of polyester is smooth, and the internal molecules are tightly arranged. Polyester is the most heat-resistant fabric among synthetic fabrics. It is thermoplastic and can be made into pleated skirts with long-lasting pleats.

5. Good wear resistance. Abrasion resistance is second only to nylon with the best abrasion resistance, better than other natural fibers and synthetic fibers.

6. Good light fastness. Lightfastness is second only to acrylic. The light fastness of polyester fabric is better, except that it is worse than acrylic fiber, and its light fastness is better than natural fiber fabric.

7. Corrosion resistance. Resistant to bleaches, oxidants, hydrocarbons, ketones, petroleum products and inorganic acids. Resistant to dilute alkali, not afraid of mildew. It also has strong acid and alkali resistance and UV resistance.

8. The dyeability is poor, but the color fastness is good and it is not easy to fade.

9. Fabrics woven from ordinary polyester filaments have the advantages of good strength, smoothness and crispness, easy washing and quick drying, etc., but have disadvantages such as hard hand feeling, poor touch, not soft luster, poor air permeability, and poor hygroscopicity. .

10 The hygroscopicity is poor, and it is stuffy to wear. At the same time, it is easy to be charged with static electricity and stained with dust, which affects the appearance and comfort. However, it is very easy to dry after washing, and the wet strength hardly decreases, does not deform, and has good washability and wearability.

As a kind of cellulose fiber, bamboo fiber is a natural high polymer processed from the well-known bamboo. Because of its special macromolecular structure, bamboo fiber has good health functions such as inhibiting bacterial growth and absorbing odors. It is also moisture-absorbing, vapor-permeable, and biodegradable. It is known as the green fiber of the new century.

Lyocell bamboo fiber, also known as solvent method bamboo fiber, is a kind of regenerated bamboo fiber spun from bamboo cellulose pulp by Lyocell technology.

The usual preparation process of Lyocell bamboo fiber is: directly dissolving bamboo cellulose pulp in an aqueous solution of N-methylmorpholine-N-oxide (NMMO for short), and preparing regenerated cellulose fibers by wet spinning. The green process has the characteristics of abundant raw materials, simple production process, advanced environmental protection, and good product performance. It is expected to gradually replace the traditional cellulose fiber production process with serious pollution, that is, the viscose process. Solvent method bamboo fiber is a kind of Lyocell fiber, known as the green fiber of the 21st century. Invention patent application publication CN101694019A discloses solvent method high wet modulus bamboo fiber and its preparation method, the waste of Lyocell bamboo fiber production can be naturally degraded, 99.5% of the amine oxide solvent in the production process can be recycled and reused, and does not pollute the environment .

The present invention attempts to realize the antibacterial effect of the fabric by blending polyester and bamboo fiber, especially Lyocell bamboo fiber, and expects to further improve the antibacterial performance of the fabric by selecting a suitable finishing method.

Contents of the invention

Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a bamboo fiber and polyester blended fabric.

In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:

A bamboo fiber and polyester blended fabric is made of 5-30wt% bamboo fiber and 70-95wt% polyester blended fabric.

A bamboo fiber and polyester blended fabric is made of 5-30wt% bamboo fiber and 70-95wt% polyester blended fabric, and then finished after antibacterial finishing.

Preferably,

The fabric is made of 15-25wt% bamboo fiber and 75-85wt% polyester blended fabric, and then finished after antibacterial finishing.

The antibacterial finishing step is to immerse in the antibacterial finishing solution at room temperature for 10-30 minutes, the amount of antibacterial finishing agent in the antibacterial finishing solution is 0.5-1.5% o.w.f, and the bath ratio is 1:15-1:30.

The antibacterial finishing agent is composed of the following components by weight: 5-15 parts of sodium lauryl sulfate, 30-50 parts of 2,4,4'-trichloro-2'-hydroxydiphenyl ether, N- 5-15 parts of sodium oleoyl-N-methyl taurate, 30-50 parts of polyhexamethylene biguanide hydrochloride. The antibacterial finishing agent can be prepared by stirring and mixing the above-mentioned components uniformly.

The bamboo fiber is Lyocell bamboo fiber.

Specifically, in the present invention:

Sodium Lauryl Sulfate, CAS No.: 151-21-3.

2,4,4'-Trichloro-2'-hydroxydiphenyl ether, CAS number: 3380-34-5.

Sodium N-oleoyl-N-methyl taurate, CAS No.: 137-20-2.

Polyhexamethylene biguanide hydrochloride, CAS accession number: 32289-58-0.

o.w.f, the full name is On weight the fabric, a term for textile dyeing and finishing. The concentration in the textile dyeing and finishing process is based on the weight of the fabric, relative to the percentage of the fabric.

Bath ratio, liquor ratio, a term used in textile dyeing and finishing, refers to the ratio of fabric to dye liquor in the dipping method.

It should be noted that, unless otherwise specified in the present invention, the content of each raw material is 100%.

In the present invention, sodium lauryl sulfate, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, N-oleoyl-N-methyl taurate sodium, polyhexamethylene biguanide When hydrochloride is used in combination, the antibacterial effect is synergistic.

Compared with the prior art, the remarkable progress of the technical solution of the present invention is mainly reflected in the following: the present invention mixes two fibers with different properties, bamboo fiber and polyester, and learns from each other, which not only keeps the fineness of bamboo fiber fine, soft to the touch, rich in silk Mass effect, has a unique natural antibacterial properties; and makes the unique excellent properties of polyester can be fully utilized. The bamboo fiber and polyester blended fabric of the present invention has good antibacterial performance, high strength, wear resistance, good drapability, soft hand feeling, comfortable and cool wearing, and good air permeability. It is suitable for processing high-end clothing and can meet consumers' requirements for fabric functionality, comfort, health, environmental protection, hygiene and health care. It has good use value and has a very broad market development prospect. Furthermore, through antibacterial finishing, the fabric has a high antibacterial rate, which can effectively protect human health.

Detailed ways

Example 1

Bamboo fiber (Leo Bamboo provided by Shanghai Leo Fiber Enterprise Development Co., Ltd. The mass ratio of bamboo fiber (denier 2.58dtex, length 38mm) to fine denier polyester (denier 0.89dtex, length 38mm) is 20:80.

The bamboo fibers weighed according to the above proportions are opened and pretreated, and carded into raw sliver on the carding machine; the polyester opened and pretreated according to the above proportions is weighed, and carded into raw strips on the carding machine; Fiber raw sliver and polyester raw sliver are merged on the drawing frame to make mature sliver; they are drafted and twisted on the roving frame, and finally drafted and twisted on the spinning frame to make polyester and bamboo fiber blended yarn. Then the polyester and bamboo fiber blended yarn is woven by a large circular machine weft knitting method, and finally the bamboo fiber and polyester blended fabric is obtained.

Concrete process steps can be:

Bamboo fiber: A002D→A006B→A036C (needle)→A092→A076→A086C→FA302→①

Fine denier polyester: A002D→A006B→A036C (comb needle)→A092→A076→A086D→②

①+②→Drawing FA302 (second pass)→Roving A454G→Spinning FA502A→Autoconer238 winder→Knitting circular machine→Bamboo fiber and polyester blended fabric

Obviously, the above-mentioned preparation techniques of blended yarns and fabrics are common methods in this industry and are well known to those skilled in the art.

Example 2

Get the made bamboo fiber and polyester blended fabric of part embodiment 1, further carry out antibacterial post-finishing, concrete steps are:

(1) Configuration of antibacterial finishing agent:

According to the data corresponding to Example 2 in Table 1, each raw material was weighed, stirred and mixed evenly, and an antibacterial finishing agent was obtained.

(2) Dipping:

Dissolving the antibacterial finishing agent in water to prepare an antibacterial finishing solution;

Then soak the bamboo fiber and polyester blended fabric in the antibacterial finishing solution at room temperature (18-25° C.) for 20 minutes. The amount of antibacterial finishing agent in the antibacterial finishing solution is 1.0% o.w.f, and the bath ratio is 1:20.

(3) Dehydration;

(4) Drying: Dry the fabric at 100°C.

The fabric of bamboo fiber and polyester blended after the antibacterial post-treatment of the present invention can be obtained.

Example 3

The preparation method is basically the same as that of Example 2, the only difference being that the selected antibacterial finishing agent is different. In this example, the data corresponding to Example 3 in Table 1 was used to prepare the antibacterial finishing agent.

Example 4

The preparation method is basically the same as that of Example 2, the only difference being that the selected antibacterial finishing agent is different. In this example, the data corresponding to Example 4 in Table 1 was used to prepare the antibacterial finishing agent.

Example 5

The preparation method is basically the same as that of Example 2, the only difference being that the selected antibacterial finishing agent is different. In this example, the data corresponding to Example 5 in Table 1 was used to prepare the antibacterial finishing agent.

Example 6

The preparation method is basically the same as that of Example 2, the only difference being that the selected antibacterial finishing agent is different. In this example, the data corresponding to Example 6 in Table 1 was used to prepare the antibacterial finishing agent.

Table 1: Antibacterial finishing agent formula table Unit: kg

Example 2 Example 3 Example 4 Example 5 Example 6 Sodium dodecyl sulfate 10 / 20 10 10 2,4,4'-Trichloro-2'-hydroxydiphenyl ether 40 40 40 80 / Sodium N-oleoyl-N-methyl taurate 10 20 / 10 10 Polyhexamethylene biguanide hydrochloride 40 40 40 / 80

test case 1

The national standard GB/T20944.3-2008 "Evaluation of Antibacterial Properties of Textiles Part 3: Oscillating Method" was used for quantitative testing of antibacterial properties, and the washing method of washing color fastness test machine was used to test the fabric after washing 30 times. The test results See Table 2.

Table 2: Antibacterial rate test table after washing 30 times

times of washing Bacteriostatic rate (Escherichia coli), % Bacterial inhibition rate (Candida albicans), %

Example 1 30 33 42 Example 2 30 91 90 Example 3 30 74 78 Example 4 30 77 75 Example 5 30 69 70 Example 6 30 71 74

Claims (3)

1. a fabric for bamboo fibre and blend polyester, is characterized in that: weaved by 5-30wt% bamboo fibre and 70-95wt% blend polyester, then form through anti-bacterial finish;

Described anti-bacterial finish step is in antibiotic finishing solution, flood 10-30 minute under normal temperature, and in described antibiotic finishing solution, antibacterial finishing agent consumption is 0.5-1.5%o.w.f, and bath raio is 1:15-1:30;

Described antibacterial finishing agent, is made up of the component of following weight portion: lauryl sodium sulfate 5-15 part, Irgacare MP 30-50 part, N-oleoyl-N methyl taurine sodium 5-15 part, hexamethylene 30-50 part.

2. the fabric of bamboo fibre as claimed in claim 1 and blend polyester, is characterized in that: weaved by 15-25wt% bamboo fibre and 75-85wt% blend polyester.

3. the fabric of bamboo fibre as claimed in claim 1 or 2 and blend polyester, is characterized in that: described bamboo fibre is Lyocell bamboo fiber.