Hydrolysis-resistant dacron for dustproof clothes

Abstract

The invention discloses hydrolysis-resistant polyester fiber for dustproof clothes, which is characterized in that the polyester fiber contains polycarbodiimide which accounts for 0.5-5% of the total weight of the polyester fiber; and the filament number of the fiber is 0.8-2.5dtex and boiling water shrinkage rate is 5-12%. The hydrolysis-resistant polyester fiber has excellent hydrolysis resistance and physical property.

Description

Technical field:

[0001] The present invention relates to a polyester fiber with hydrolysis resistance. Background technique:

[0002] In the past, the dust-proof clothing fabrics used in hospitals were sterilized at a relative humidity of 100% and a high temperature of 115 degrees for 20 minutes, but now due to problems such as bacterial mutation, the sterilization temperature must be increased. In order to allow the fabric to be treated repeatedly for 70-100 times under the conditions of 100% humidity and 20 minutes at 135 degrees, the hydrolysis resistance of the dustproof clothing fabric under high temperature and humidity conditions must be improved.

[0003] For example, Japanese Patent Laying-Open No. 44-27911 and Japanese Patent Laid-Open No. 54-6051 disclose the technology of adding glycidyl ether, but the compound generated during melt spinning is easily aged, and the residual elongation of the precursor is reduced. , which cannot meet the physical requirements. ...

Examples

Embodiment

[0031] Mix polyester PET and polycarbodiimide according to different proportions, measure after melting, under the condition of total discharge speed 37g / min, spinning temperature 295 degrees, 72-hole φ0.28mmde mouth gold discharge spinning speed 3000m / min Down spinning obtains 140D-72 semi-drawn yarn with residual elongation of 150%. The semi-stretched yarn is stretched at an extension temperature of 85 degrees, a heat setting temperature of 140 degrees, and an elongation ratio of 1.7 to obtain a stretched yarn of 84D-72 single filament fineness of 1.2dtex. The obtained stretched filaments were twisted at 1500T / M and used as warp and weft yarns of the fabric respectively to obtain a plain weave fabric with a processing density of 153 x 80 / 160 x 86, which was heat treated at 135 degrees for 100 times for 20 minutes. The polycarbodiimide contains N=C=N groups, and its structural formula is:

[0032]

[0033] R 1 , R 2 It is one or more of C1-C10 saturated or unsaturated a...

Embodiment 3

[0040] Levels 11-14 are based on the spinning conditions of level 1, using polycarbodiimides with different molecular weights, and the results are as follows.

[0041] 11 12 13 14

Technical field:

[0001] The present invention relates to a polyester fiber with hydrolysis resistance. Background technique:

[0002] In the past, the dust-proof clothing fabrics used in hospitals were sterilized at a relative humidity of 100% and a high temperature of 115 degrees for 20 minutes, but now due to problems such as bacterial mutation, the sterilization temperature must be increased. In order to allow the fabric to be treated repeatedly for 70-100 times under the conditions of 100% humidity and 20 minutes at 135 degrees, the hydrolysis resistance of the dustproof clothing fabric under high temperature and humidity conditions must be improved.

[0003] For example, Japanese Patent Laying-Open No. 44-27911 and Japanese Patent Laid-Open No. 54-6051 disclose the technology of adding glycidyl ether, but the compound generated during melt spinning is easily aged, and the residual elongation of the precursor is reduced. , which cannot meet the physical requirements. ...

Examples

Embodiment

[0031] Mix polyester PET and polycarbodiimide according to different proportions, measure after melting, under the condition of total discharge speed 37g / min, spinning temperature 295 degrees, 72-hole φ0.28mmde mouth gold discharge spinning speed 3000m / min Down spinning obtains 140D-72 semi-drawn yarn with residual elongation of 150%. The semi-stretched yarn is stretched at an extension temperature of 85 degrees, a heat setting temperature of 140 degrees, and an elongation ratio of 1.7 to obtain a stretched yarn of 84D-72 single filament fineness of 1.2dtex. The obtained stretched filaments were twisted at 1500T / M and used as warp and weft yarns of the fabric respectively to obtain a plain weave fabric with a processing density of 153 x 80 / 160 x 86, which was heat treated at 135 degrees for 100 times for 20 minutes. The polycarbodiimide contains N=C=N groups, and its structural formula is:

[0032]

[0033] R 1 , R 2 It is one or more of C1-C10 saturated or unsaturated a...

Embodiment 3

[0040] Levels 11-14 are based on the spinning conditions of level 1, using polycarbodiimides with different molecular weights, and the results are as follows.

[0041] 11 12 13 14

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