CN102154753A - Basalt covering yarn - Google Patents

Abstract

The technical scheme of the invention provides a basalt covering yard which comprises basalt monofilaments and is characterized in that mixed yarns are wound outside the basalt monofilaments. The basalt covering yard has the benefits: the basalt covering yard can be made into flame-retardant weaving fabric; the index of the flame-retardant oxygen can reach larger than or equal to 28; and the basalt covering yarn becomes black and is carbonized after being burned by flames of more than 900 DEG C, keeps the original state, is not deformed and fractured, prevents combustion, automatically quenches the flames and is used for welding prevention clothes, fire protection clothes, household decorations and the like.

Description

A kind of basalt core-spun yarn

technical field

The invention relates to a basalt core-spun yarn.

Background technique

Basalt fiber has superior physical and chemical properties, and its characteristics are: (1) permanent flame retardancy: limiting oxygen index (LOI) > 70; (2) ultra-high softening temperature: > 1200 ° C; (3) extremely high Operating temperature: >880°C; (4) Extremely low operating temperature: <-260°C; (5) High breaking strength: 4500MPa; (6) Low breaking elongation: 3.1%; (7) High elasticity Modulus: 1x104kg/mm2; (8) Material density: 2.7g/cm3; (9) Low thermal conductivity: 0.035W/m K; (10) High sound absorption coefficient: 0.95; (11) Low moisture absorption : 0.1%; (12) High specific volume resistance: 1x1012Ω·m; (13) Anti-radiation lead equivalent: 0.0073mmPb.

Basalt fiber is a good flame-retardant raw material, but its rigidity is high and brittle, and it is easy to generate debris and break easily during the weaving process. Therefore, there is currently no yarn using basalt fiber.

Contents of the invention

The object of the present invention is to provide a core-spun yarn containing basalt fibers.

In order to achieve the above object, the technical solution of the present invention is to provide a basalt core-spun yarn, which includes basalt monofilament, and is characterized in that: a mixed yarn is wound outside the basalt monofilament.

Further, the mixed yarn is formed by mixing flame-retardant viscose fiber, pre-oxidized fiber, flame-retardant acrylic fiber or/and Kevlar fiber.

The mixed yarn is formed by mixing flame-retardant acrylic fiber, pre-oxidized fiber and Kevlar fiber.

The mixed yarn is formed by mixing pre-oxidized fiber and Kevlar fiber.

The beneficial effects of the present invention are: the basalt core-spun yarn can be made into a flame-retardant woven fabric, the flame-retardant oxygen index can reach ≥ 28, and it becomes black and carbonized after being burned by a flame above 900°C, and maintains the original state. No deformation, no rupture, absorb heat, prevent burning, automatically extinguish the flame, used for welding workers' anti-welding clothing, fire protection clothing, household decoration, etc.

Description of drawings

Fig. 1 is a schematic diagram of the structure of a basalt core-spun yarn provided by the present invention.

Detailed ways

In order to make the present invention more comprehensible, a preferred embodiment is described in detail below with accompanying drawings.

As shown in Figure 1, it is a schematic diagram of the structure of a basalt core-spun yarn. The basalt core-spun yarn includes a basalt monofilament 1 and a yarn with a single component or a mixed yarn with multiple components wound on the basalt monofilament 1 2.

The mixed yarn 2 is a mixture of flame-retardant viscose fiber, pre-oxidized fiber, flame-retardant acrylic fiber or/and Kevlar fiber. Among them, the specifications of various yarns are as follows:

1. Flame-retardant viscose fiber specifications: 2.2dtex* (38mm-55mm), oxygen index ≥ 28, accounting for 20%-40% of the weight of the entire yarn.

2. Flame-retardant acrylic fiber specification: 2.2dtex* (38mm-55mm), oxygen index ≥ 28, accounting for 20%-70% of the weight of the entire yarn.

3. Specifications of pre-oxidized fiber: 2.2dtex* (38mm-55mm), oxygen index ≥ 28, accounting for 50%-80% of the weight of the entire yarn, such as (polyacrylonitrile-based pre-oxidized fiber).

4. Kevlar fiber specification: 2.2dtex* (38mm-55mm), oxygen index ≥ 28, accounting for 10%-20% of the weight of the entire yarn.

5. Specifications of basalt monofilament: monofilament, diameter 6um, 7um, 9um, 13um.

The above mixed fiber materials are mixed in proportion, and after twisting, wrapping and other methods, it is made into a flame-retardant core-spun yarn with basalt filament as the core thread, and the specification is 15-28 counts.

Basalt core-spun yarn can be woven into flame-retardant woven fabric (plain weave, twill weave, double-layer), specifications: grammage 100g/㎡-300 g/㎡.

The flame-retardant woven fabric made of basalt core-spun yarn has a flame-retardant oxygen index ≥ 28, a damaged length ≤ 7cm, and a dark and continuous burning time of zero seconds. After burning with a flame above 900 ° C, it becomes black carbonization. And maintain the original state, no deformation, no rupture, absorb heat, prevent burning, and automatically extinguish the flame. Suitable for welding workers' anti-welding clothing, firefighting clothing, home decoration, etc.

Claims (4)

1. a basalt cladded yarn comprises basalt monofilament (1), it is characterized in that: be around with blended yarns (2) at basalt monofilament (1).

2. a kind of basalt cladded yarn as claimed in claim 1 is characterized in that: described blended yarns (2) by Fire resistant viscose fiber, pre-oxidized fibers, fire-retardant polyacrylic and polyester fiber or/and kevlar fiber mix.

3. a kind of basalt cladded yarn as claimed in claim 1 is characterized in that: described blended yarns (2) is mixed by fire-retardant polyacrylic and polyester fiber, pre-oxidized fibers and kevlar fiber.

4. a kind of basalt cladded yarn as claimed in claim 1 is characterized in that: described blended yarns (2) is mixed by pre-oxidized fibers and kevlar fiber.

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