CN101929001A

CN101929001A - Collateral fiber of PET (Polyethylene Terephthalate) and PBS (Poly Butylenes Succinate)

Info

Publication number: CN101929001A
Application number: CN200910144624XA
Authority: CN
Inventors: 徐关祥
Original assignee: Jiangsu Yingxiang Chemical Fiber Co Ltd
Current assignee: Jiangsu Yingxiang Chemical Fiber Co Ltd
Priority date: 2009-08-24
Filing date: 2009-08-24
Publication date: 2010-12-29

Abstract

The invention relates to a preparation method of a collateral fiber of PET (Polyethylene Terephthalate) and PBS (Poly Butylenes Succinate). The method is characterized by comprising the following steps of: firstly, obtaining PBS through a chemical synthesis process; then, spinning with the PET; respectively melting the two different polymers in spinning; and finally extruding and combining into a collateral dual-component fiber through a spinneret plate.

Description

PET PBS collateral fiber

Technical field

The present invention relates to the fiber production field, the preparation method of particularly a kind of polyethylene terephthalate and olybuthylenesuccinatcollateral collateral fiber.

Background technology

The kind of biodegradable fiber is various day by day, numerous areas such as that its application relates to is medical, take, fishery, building, health, decoration, industrial treatment.Aliphatic polyester is a class important in the degradable polyester, poly butylene succinate wherein, fusing point is 115 ℃, good stability, be difficult at room temperature decomposing, mechanical property is good, has the possibility of processed and applied, is the focus of present degradable polyester research, domestic synthetic poly butylene succinate molecular weight is lower at present, the color jaundice is applied in the plastics field more, and the application of poly-succinic acid-butanediol is also seldom seen in field of textiles.

Summary of the invention

In order to develop the application at field of textiles of poly butylene succinate, select polyethylene terephthalate and poly butylene succinate cospinning, the fiber that obtains having fluffy performance.

The present invention relates to the preparation method of a kind of polyethylene terephthalate and olybuthylenesuccinatcollateral collateral fiber, it is characterized in that: the poly butylene succinate that obtains by chemical polymerization, then with the common spinning of polyethylene terephthalate, two kinds of different polymer fusions are respectively separately extruded by spinnerets at the eleventh hour and are combined into the parallel type bicomponent fibers during spinning.

The preparation of poly-succinic succinate: raw material is butanediol and succinic acid, adding mol ratio is 1.10～1.15, catalyst is toluene sulfonic acide and stannous chloride, polyester synthetic mainly contains esterification and two steps of polycondensation finish, esterification is finished by normal pressure and two esterifying kettles of decompression in the continuous polymerization technique, and polycondensation reaction is finished by precondensation and poly-two stills of final minification.

The synthesis technique of poly butylene succinate:

Reaction temperature/℃	140～150?	150～160?	230～240?	230～240?
					Reaction pressure/Pa	(1.3～1.5)×10 ⁵	60000～70000?	2500～3000?	50～100?
The time of staying/min	60～90?	60～90?	50～70?	120～150?

The intrinsic viscosity of the polyethylene terephthalate section of buying is 0.60～0.65dl/g.260 ℃ of fusing points, end carboxyl≤30mmol/kg, form and aspect L value 〉=90, moisture≤0.15%.

Poly butylene succinate will add catalyst, delustering agent, stabilizing agent, synergist and fire retardant in synthetic, the addition of catalyst toluene sulfonic acide is 100 * 10 of a butanediol amount ^-6, the addition of stannous chloride is 400 * 10 of a butanediol amount ^-6The consumption of delustering agent silica is 3 of butanediol amount～5 ‰, the consumption of stabilizing agent phosphoric acid is 3 of butanediol amount～5 ‰, the consumption of fire retardant bromoacrylic acid is 5 of butanediol amount～8 ‰, the consumption of synergist sodium antimonate is 1 of butanediol amount～3 ‰, catalyst and polymer raw enter esterification together, and delustering agent, stabilizing agent, synergist and fire retardant then add in the final stage of polycondensation reaction.

When the preparation bilateral fibre, polyethylene terephthalate and poly butylene succinate are from ester fusion respectively, last moment before extruding, two kinds of polyester fondants entered manifold, by regulating the separating element in the manifold and the relation of spinnerets, can obtaining the shared mass ratio of polyethylene terephthalate is dissimilar bilateral fibres such as 30～35%, 35～40%, 40～45%, 45～50%.

Two-component polymer just be spun into behind the silk successively through one stretching, HEAT SETTING, two roads stretch, curl, HEAT SETTING, cut-out operation system.The draft temperature of polyester fondant spinning is 240 ℃, and spinning speed is 1000～2000m/min, and the draw ratio that stretches is 2.5～3.5 together, and draft temperature is 150 ℃, and heat setting temperature is at 90～100 ℃; The draw ratio that two roads stretch is 1.15～1.50, and draft temperature is 110 ℃, and curling temperature is 70～80 ℃, through HEAT SETTING fiber temperature is reached below 65 ℃ again, cuts off.

Progressive meaning of the present invention is:

Utilize the bilateral fibre for preparing with the polyethylene terephthalate cospinning, fiber has soft smooth, fluffy insulation, and wear-resisting light fastness has been expanded the application at field of textiles of poly butylene succinate.

The specific embodiment

The preparation method of a kind of polyethylene terephthalate and olybuthylenesuccinatcollateral collateral fiber, the poly butylene succinate that obtains by chemical polymerization at first, then with the common spinning of polyethylene terephthalate, two kinds of different polymer fusions are respectively separately extruded by spinnerets at the eleventh hour and are combined into the parallel type bicomponent fibers during spinning.

Embodiment

1. the preparation of poly-succinic succinate: raw material is butanediol and succinic acid, adding mol ratio is 1.11, catalyst is p-methyl benzenesulfonic acid and butyl titanate, polyester synthetic mainly contains esterification and two steps of polycondensation finish, esterification answers two esterifying kettles to finish by normal pressure with subtracting in the continuous polymerization technique, and polycondensation reaction is finished by precondensation and poly-two stills of final minification

The synthesis technique of poly butylene succinate:

Condition	Esterification I	Esterification II	Precondensation	Final minification is poly-
					Condition	Esterification I	Esterification II	Precondensation	Final minification is poly-
Reaction temperature/℃	140～150?	150～160?	230～240?	230～240?
					Reaction pressure/Pa	1.3×10 ⁵	65000?	2800?	70?
The time of staying/min	70?	70?	60?	130?

2. poly butylene succinate will add catalyst, delustering agent, stabilizing agent, synergist and fire retardant in synthetic, and the addition of catalyst toluene sulfonic acide is 100 * 10 of a butanediol amount ^-6, the addition of stannous chloride is 400 * 10 of a butanediol amount ^-6The consumption of delustering agent silica is 4 ‰ of a butanediol amount, the consumption of stabilizing agent trimethyl phosphate is 4 ‰ of a butanediol amount, the consumption of fire retardant bromostyrene is 5 ‰ of a butanediol amount, the consumption of synergist sodium antimonate is 3 ‰ of a butanediol amount, catalyst and polymer raw enter esterification together, and delustering agent, stabilizing agent, synergist and fire retardant then add in the final stage of polycondensation reaction.

3. when the preparation bilateral fibre, polyethylene terephthalate and poly butylene succinate are from ester fusion respectively, last moment before extruding, two kinds of polyester fondants entered manifold, by regulating the separating element in the manifold and the relation of spinnerets, can obtaining the shared mass ratio of polyethylene terephthalate is dissimilar bilateral fibres such as 30～35%, 35～40%, 40～45%, 45～50%.

Two-component polymer just be spun into behind the silk successively through one stretching, HEAT SETTING, two roads stretch, curl, HEAT SETTING, cut-out operation system.The draft temperature of polyester fondant spinning is 240 ℃, and spinning speed is 1500m/min, and the draw ratio that stretches is 2.6 together, and draft temperature is 150 ℃, and heat setting temperature is at 90～100 ℃; The draw ratio that two roads stretch is 1.30, and draft temperature is 110 ℃, and curling temperature is 70～80 ℃, through HEAT SETTING fiber temperature is reached below 65 ℃ again, cuts off.

5. Zhi Bei bilateral fibre has soft smooth, fluffy insulation, wear-resisting light fastness.

Claims

1. the preparation method of polyethylene terephthalate and olybuthylenesuccinatcollateral collateral fiber is characterized in that:

The poly butylene succinate that obtains by chemical polymerization at first, raw material is butanediol and succinic acid, adding mol ratio is 1.10～1.15, the synthesis technique of poly butylene succinate:

Condition Esterification I Esterification II Precondensation Final minification is poly- Reaction temperature/℃ 140～150 150～160 230～240 230～240 Reaction pressure/Pa (1.3～1.5)×10 ⁵ 60000～70000 2500～3000 50～100 The time of staying/min 60～90 60～90 50～70 120～150

Wherein the addition of catalyst toluene sulfonic acide is 100 * 10 of a butanediol amount ^-6, the addition of stannous chloride is 400 * 10 of a butanediol amount ^-6The consumption of delustering agent silica is 3 of butanediol amount～5 ‰, the consumption of stabilizing agent phosphoric acid is 3 of butanediol amount～5 ‰, the consumption of fire retardant bromoacrylic acid is 5 of butanediol amount～8 ‰, the consumption of synergist sodium antimonate is 1 of butanediol amount～3 ‰, catalyst and polymer raw enter esterification together, and delustering agent, stabilizing agent, synergist and fire retardant then add in the final stage of polycondensation reaction;

Then with the common spinning of polyethylene terephthalate, two kinds of different polymer fusions respectively separately during spinning, extrude by spinnerets at the eleventh hour and be combined into the parallel type bicomponent fibers, the draft temperature of polyester fondant spinning is 240 ℃, spinning speed is 1000～2000m/min, the draw ratio that stretches is 2.5～3.5 together, and draft temperature is 150 ℃, and heat setting temperature is at 90～100 ℃; The draw ratio that two roads stretch is 1.15～1.50, and draft temperature is 110 ℃, and curling temperature is 70～80 ℃, through HEAT SETTING fiber temperature is reached below 65 ℃ again, cuts off.

2. according to claim 1, it is characterized in that: by regulating the separating element in the manifold and the relation of spinnerets, can obtaining the shared mass ratio of polyethylene terephthalate is dissimilar bilateral fibres such as 30～35%, 35～40%, 40～45%, 45～50%.