CN101775705A - Manufacture method of biodegradable non-woven material - Google Patents
Manufacture method of biodegradable non-woven material Download PDFInfo
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- CN101775705A CN101775705A CN200910247374A CN200910247374A CN101775705A CN 101775705 A CN101775705 A CN 101775705A CN 200910247374 A CN200910247374 A CN 200910247374A CN 200910247374 A CN200910247374 A CN 200910247374A CN 101775705 A CN101775705 A CN 101775705A
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Abstract
The invention provides a manufacture method of a biodegradable non-woven material, which is characterized in that the method comprises the following steps: slicing and drying polyethylene succinate-co-p-benzene dicarboxylic acid butanediol ester; heating and fusing polymer slices in a screw rod extruding press; extruding fused mass from spinneret holes of a mold head; using high-pressure air flow for spraying and blowing at both sides of the spinneret holes when the fused mass is extruded from the spinneret holes of the mold head; tensioning the fused mass into superfine fiber; receiving the superfine fiber through a receiving roller; and forming a biodegradable PBST fused spraying non-woven material through the self adhesive effect of the superfine fiber. The non-woven material manufactured by the method of the invention has good thermodynamic performance, fine fiber diameter, good ventilation performance, soft hand feeling and the like, and also has excellent biodegrading capability. The product can be used in the fields of filtering materials, sanitation materials, package materials and the like, and belongs to a product with good development prospects and high added value.
Description
Technical field
The invention belongs to polymeric material field, being specifically related to a kind of is the manufacture method that raw material adopts a kind of degradable nonwoven material of melt blown webbing technology acquisition with biodegradable poly-succinic acid-butanediol-common-mutual-phenenyl two acid bromide two alcohol ester (PBST).
Background technology
Along with improving constantly of human environmental protection and oil crisis consciousness, a large amount of usefulness of using are promptly abandoned the feature of environmental protection of product and the attention that sustainability obtains people gradually.In recent years, very active to the research and development of Biodegradable material both at home and abroad, degradable polyester has become the focus of domestic and international research owing to its biological degradability and economy, poly-succinic-altogether-mutual-phenenyl two acid bromide two alcohol ester (PBST) is exactly one of them.At present existing scholar has done a large amount of research to PBST, and Korea S benevolence lotus university is with succinic acid, 1, and 4-butanediol, dimethyl terephthalate (DMT) are monomer, and the PBST copolyesters is synthesized in copolymerization; Tsing-Hua University forms the PBST copolyesters by the ester exchange offspring copolycondensation of the esterification products of aliphatic dibasic acid, dihydroxylic alcohols and dimethyl terephthalate (DMT), dihydroxylic alcohols.They have studied molecular structure, thermodynamic property and the degradation property etc. of PBST copolyesters.Its molecular weight is relatively low, mainly as plastic products, and is not suitable for being used for spinning fibre.And Donghua University adopts the ester exchange route, and disposable feeding intake prepared high molecular biodegradation PBST copolyesters, and with its melt spinning, the PBST fiber of preparation has good mechanical performance and biodegradability.
Melt blown non-woven technology is to be developed by US Naval Research Laboratory the fifties in last century, realizes industrialization by Exxon company, develops rapidly afterwards.Its technological principle is that the polymer melt that will extrude forms superfine staple fibre by thermal air current at a high speed or other means (for example centrifugal force, electrostatic force etc.), and agglomerating to perforated cylinder or curtain is online, bonding or heat pressure adhesive is reinforced and is made non-weaving cloth by self.Various aspects such as its product is widely used in filtering, warming, health care.With promptly abandoning in the product, melt-blown non-woven material occupies sizable ratio, and therefore biodegradable melt-blowing nonwoven has become research emphasis.What research was more at present is the non-manufacturing cloth of PLA (PLA), but the PLA poor heat stability, molecule is easily degraded during melt-processed, and cost is more expensive.And PBST had both had biological degradability preferably, had higher heat endurance again, was convenient to processing.
Summary of the invention
The objective of the invention is to utilize the melt blown webbing technology, provide the manufacture method of a kind of poly-succinic-common-mutual-phenenyl two acid bromide two alcohol ester (PBST) biodegradable non-woven material, to satisfy the demand of present people for degradation material.
In order to achieve the above object, technical scheme of the present invention provides a kind of manufacture method of biodegradable non-woven material, it is characterized in that, concrete steps are:
The first step: with poly-succinic-altogether-mutual-phenenyl two acid bromide two alcohol ester's chip drying, dry initial temperature is 60 ℃, and the speed with 10 ℃/min rises to 100 ℃ with temperature afterwards, freeze-day with constant temperature 20～24h, and moisture content is lower than 30ppm to guarantee to cut into slices;
Second step: with polymer chips heating and melting in screw extruder, extrude from the spinneret orifice of die head, wherein, extruded velocity is 3.1～6.7rpm, the temperature in screw extruder Zhong Yi district, two districts, three districts, four districts, five districts, six districts is respectively 170～190 ℃, 230～270 ℃, 260～290 ℃, 260～290 ℃, 265～290 ℃, 265～290 ℃, and die head temperature is 260～290 ℃;
The 3rd step: when melt when the spinneret orifice of die head is extruded, utilize the high pressure air flow winding-up of spinneret orifice both sides, melt is drawn into superfine fibre, wherein, the pressure of spinneret orifice both sides high pressure air flow is 0.1～0.35MPa, temperature is 280～330 ℃;
The 4th step: receive superfine fibre with receiving cylinder, utilize the autoadhesion effect of superfine fibre to form biodegradable PBST melt-blown non-woven material, wherein, meltblown beam and the receiving range that receives between the cylinder are 200～400mm.
Compare with prior art and product, advantage of the present invention is as follows:
The invention solves and how to adopt poly-succinic-common-mutual-phenenyl two acid bromide two alcohol ester (PBST) to make the problem of biodegradable non-woven material for raw material, method equipment of the present invention is simple, technological process short, thermodynamic property is good except having for the nonwoven material of manufacturing, fibre diameter is thin, good permeability and the advantage such as soft, also have good biodegradability.Its product can be used for fields such as filtering material, hygienic material, packaging material, be a kind of have fine development prospect, high value-added product.
The specific embodiment
The selected poly-succinic of the present invention-altogether-mutual-phenenyl two acid bromide two alcohol ester (PBST) is as a kind of novel aliphatic/aromatic copolyesters, have fibre-forming performance preferably, the nonwoven material that utilizes fiber that melt spinning makes and melt blown webbing technology to make all has good mechanical performance and biodegradability.By the following examples the present invention is specifically described, will helps to understand the present invention, but do not limit content of the present invention.
Embodiment 1
Method by above-mentioned manufacturing poly-succinic of the present invention-altogether-mutual-phenenyl two acid bromide two alcohol ester (PBST) biodegradable non-woven material mainly comprises chip drying, melt extrudes, air drawing and fibre web reinforce four procedure of processings.Each procedure of processing adopts following process conditions:
The first step: with poly-succinic-altogether-mutual-phenenyl two acid bromide two alcohol ester's chip drying, dry initial temperature is 60 ℃, and the speed with 10 ℃/min rises to 100 ℃ with temperature afterwards, freeze-day with constant temperature 20h, and moisture content is lower than 30ppm to guarantee to cut into slices;
Second step: with polymer chips heating and melting in screw extruder, extrude from the spinneret orifice of die head, wherein, extruded velocity is 3.1rpm, the temperature in screw extruder Zhong Yi district, two districts, three districts, four districts, five districts, six districts is respectively 170,230 ℃, 260 ℃, 260 ℃, 265 ℃, 265 ℃, and die head temperature is 260 ℃;
The 3rd step: when melt when the spinneret orifice of die head is extruded, utilize the high pressure air flow winding-up of spinneret orifice both sides, melt is drawn into superfine fibre, wherein, the pressure of spinneret orifice both sides high pressure air flow is 0.1MPa, temperature is 280 ℃;
The 4th step: receive superfine fibre with receiving cylinder, utilize the autoadhesion effect of superfine fibre to form biodegradable PBST melt-blown non-woven material, wherein, meltblown beam and the receiving range that receives between the cylinder are 200mm.
The performance of table 1 poly-succinic-be total to-mutual-phenenyl two acid bromide two alcohol ester (PBST) degradable nonwoven material
Embodiment 2
Method by above-mentioned manufacturing poly-succinic of the present invention-altogether-mutual-phenenyl two acid bromide two alcohol ester (PBST) biodegradable non-woven material mainly comprises chip drying, melt extrudes, air drawing and fibre web reinforce four procedure of processings.Each procedure of processing adopts following process conditions:
The first step: with poly-succinic-altogether-mutual-phenenyl two acid bromide two alcohol ester's chip drying, dry initial temperature is 60 ℃, and the speed with 10 ℃/min rises to 100 ℃ with temperature afterwards, freeze-day with constant temperature 24h, and moisture content is lower than 30ppm to guarantee to cut into slices;
Second step: with polymer chips heating and melting in screw extruder, extrude from the spinneret orifice of die head, wherein, extruded velocity is 6.7rpm, the temperature in screw extruder Zhong Yi district, two districts, three districts, four districts, five districts, six districts is respectively 190 ℃, 270 ℃, 290 ℃, 290 ℃, 290 ℃, 290 ℃, and die head temperature is 290 ℃;
The 3rd step: when melt when the spinneret orifice of die head is extruded, utilize the high pressure air flow winding-up of spinneret orifice both sides, melt is drawn into superfine fibre, wherein, the pressure of spinneret orifice both sides high pressure air flow is 0.35MPa, temperature is 330 ℃;
The 4th step: receive superfine fibre with receiving cylinder, utilize the autoadhesion effect of superfine fibre to form biodegradable PBST melt-blown non-woven material, wherein, meltblown beam and the receiving range that receives between the cylinder are 400mm.
The performance of table 2 poly-succinic-be total to-mutual-phenenyl two acid bromide two alcohol ester (PBST) degradable nonwoven material
Embodiment 3
Method by above-mentioned manufacturing poly-succinic of the present invention-altogether-mutual-phenenyl two acid bromide two alcohol ester (PBST) biodegradable non-woven material mainly comprises chip drying, melt extrudes, air drawing and fibre web reinforce four procedure of processings.Each procedure of processing adopts following process conditions:
The first step: with poly-succinic-altogether-mutual-phenenyl two acid bromide two alcohol ester's chip drying, dry initial temperature is 60 ℃, and the speed with 10 ℃/min rises to 100 ℃ with temperature afterwards, freeze-day with constant temperature 22h, and moisture content is lower than 30ppm to guarantee to cut into slices;
Second step: with polymer chips heating and melting in screw extruder, extrude from the spinneret orifice of die head, wherein, extruded velocity is 3.1rpm, the temperature in screw extruder Zhong Yi district, two districts, three districts, four districts, five districts, six districts is respectively 175 ℃, 240 ℃, 280 ℃, 280 ℃, 285 ℃, 285 ℃, and die head temperature is 265 ℃;
The 3rd step: when melt when the spinneret orifice of die head is extruded, utilize the high pressure air flow winding-up of spinneret orifice both sides, melt is drawn into superfine fibre, wherein, the pressure of spinneret orifice both sides high pressure air flow is 0.15MPa, temperature is 300 ℃;
The 4th step: receive superfine fibre with receiving cylinder, utilize the autoadhesion effect of superfine fibre to form biodegradable PBST melt-blown non-woven material, wherein, meltblown beam and the receiving range that receives between the cylinder are 250mm.
The performance of table 3 poly-succinic-be total to-mutual-phenenyl two acid bromide two alcohol ester (PBST) degradable nonwoven material
Embodiment 4
Method by above-mentioned manufacturing poly-succinic of the present invention-altogether-mutual-phenenyl two acid bromide two alcohol ester (PBST) biodegradable non-woven material mainly comprises chip drying, melt extrudes, air drawing and fibre web reinforce four procedure of processings.Each procedure of processing adopts following process conditions:
The first step: with poly-succinic-altogether-mutual-phenenyl two acid bromide two alcohol ester's chip drying, dry initial temperature is 60 ℃, and the speed with 10 ℃/min rises to 100 ℃ with temperature afterwards, freeze-day with constant temperature 24h, and moisture content is lower than 30ppm to guarantee to cut into slices;
Second step: with polymer chips heating and melting in screw extruder, extrude from the spinneret orifice of die head, wherein, extruded velocity is 4.3rpm, the temperature in screw extruder Zhong Yi district, two districts, three districts, four districts, five districts, six districts is respectively 180 ℃, 240 ℃, 285 ℃, 285 ℃, 290 ℃, 290 ℃, and die head temperature is 275 ℃;
The 3rd step: when melt when the spinneret orifice of die head is extruded, utilize the high pressure air flow winding-up of spinneret orifice both sides, melt is drawn into superfine fibre, wherein, the pressure of spinneret orifice both sides high pressure air flow is 0.2MPa, temperature is 310 ℃;
The 4th step: receive superfine fibre with receiving cylinder, utilize the autoadhesion effect of superfine fibre to form biodegradable PBST melt-blown non-woven material, wherein, meltblown beam and the receiving range that receives between the cylinder are 300mm.
The performance of table 4 poly-succinic-be total to-mutual-phenenyl two acid bromide two alcohol ester (PBST) degradable nonwoven material
Embodiment 5
Method by above-mentioned manufacturing poly-succinic of the present invention-altogether-mutual-phenenyl two acid bromide two alcohol ester (PBST) biodegradable non-woven material mainly comprises chip drying, melt extrudes, air drawing and fibre web reinforce four procedure of processings.Each procedure of processing adopts following process conditions:
The first step: with poly-succinic-altogether-mutual-phenenyl two acid bromide two alcohol ester's chip drying, dry initial temperature is 60 ℃, and the speed with 10 ℃/min rises to 100 ℃ with temperature afterwards, freeze-day with constant temperature 24h, and moisture content is lower than 30ppm to guarantee to cut into slices;
Second step: with polymer chips heating and melting in screw extruder, extrude from the spinneret orifice of die head, wherein, extruded velocity is 5.2rpm, the temperature in screw extruder Zhong Yi district, two districts, three districts, four districts, five districts, six districts is respectively 180 ℃, 240 ℃, 285 ℃, 285 ℃, 290 ℃, 290 ℃, and die head temperature is 275 ℃;
The 3rd step: when melt when the spinneret orifice of die head is extruded, utilize the high pressure air flow winding-up of spinneret orifice both sides, melt is drawn into superfine fibre, wherein, the pressure of spinneret orifice both sides high pressure air flow is 0.22MPa, temperature is 310 ℃;
The 4th step: receive superfine fibre with receiving cylinder, utilize the autoadhesion effect of superfine fibre to form biodegradable PBST melt-blown non-woven material, wherein, meltblown beam and the receiving range that receives between the cylinder are 400mm.
The performance of table 5 poly-succinic-be total to-mutual-phenenyl two acid bromide two alcohol ester (PBST) degradable nonwoven material
Claims (1)
1. the manufacture method of a biodegradable non-woven material is characterized in that, concrete steps are:
The first step: with poly-succinic-altogether-mutual-phenenyl two acid bromide two alcohol ester's chip drying, dry initial temperature is 60 ℃, and the speed with 10 ℃/min rises to 100 ℃ with temperature afterwards, freeze-day with constant temperature 20～24h, and moisture content is lower than 30ppm to guarantee to cut into slices;
Second step: with polymer chips heating and melting in screw extruder, extrude from the spinneret orifice of die head, wherein, extruded velocity is 3.1～6.7rpm, the temperature in screw extruder Zhong Yi district, two districts, three districts, four districts, five districts, six districts is respectively 170～190 ℃, 230～270 ℃, 260～290 ℃, 260～290 ℃, 265～290 ℃, 265～290 ℃, and die head temperature is 260～290 ℃;
The 3rd step: when melt when the spinneret orifice of die head is extruded, utilize the high pressure air flow winding-up of spinneret orifice both sides, melt is drawn into superfine fibre, wherein, the pressure of spinneret orifice both sides high pressure air flow is 0.1～0.35MPa, temperature is 280～330 ℃;
The 4th step: receive superfine fibre with receiving cylinder, utilize the autoadhesion effect of superfine fibre to form biodegradable PBST melt-blown non-woven material, wherein, meltblown beam and the receiving range that receives between the cylinder are 200～400mm.
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| WO2020134444A1 (en) * | 2018-12-28 | 2020-07-02 | 佛山科学技术学院 | Preparation method for biological tissue engineering stent by solution spraying |
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