CN102758356B - Process for enhancing hygiene performance of superfine-fiber synthetic leather - Google Patents
Process for enhancing hygiene performance of superfine-fiber synthetic leather Download PDFInfo
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- CN102758356B CN102758356B CN201210251070.5A CN201210251070A CN102758356B CN 102758356 B CN102758356 B CN 102758356B CN 201210251070 A CN201210251070 A CN 201210251070A CN 102758356 B CN102758356 B CN 102758356B
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Abstract
The invention relates to a process for enhancing hygiene performance of superfine-fiber synthetic leather. The process comprises the following steps of: firstly, adding 10%-15% of concentrated sulfuric acid with mass concentration of 98% under the situation that a liquor ratio is 50, and repeatedly washing resultant at a normal temperature after the reaction; adjusting the pH value of the resultant to 6-8, reacting glutaraldehyde with mass concentration of 25% with base cloth at a temperature of 20-50 DEG C, and repeatedly washing resultant with saline at the normal temperature; adding multi-amino polymer in the resultant, and performing crosslink on the mutli-amino polymer and the resultant at a temperature of 20-50 DEG C and with the pH being 6-8, wherein the mole ratio of the multi-amino polymer to the glutaraldehyde is 1:1-1:2; and finally, adding 1%-4% of aldehyde eliminating agent in resultant, reacting the agent and the resultant for 1-2 hours at a temperature of 30-50 DEG C, washing the resultant in water at a temperature of 30-50 DEG C, and drying the resultant. The process provided by the invention utilizes the two-step glutaraldehyde method to crosslink the base cloth and the multi-amino polymer to form the composite of the base cloth, the glutaraldehyde and the multi-amino polymer, so that active functional groups of the base cloth are enhanced, and the hygiene performance of the superfine fiber composition leather is permanently enhanced.
Description
Technical field
The present invention relates to synthesis of polymer material and Application Areas, be specifically related to a kind of technique that improves sanitation performance of superfine fibre chemical leather.
Background technology
Superfine fiber chemical leather (being called for short super fine leather) is the elastomeric composite of superfine fibre and PU.Structure, be generally divided into two-layer: surface layer and base layer.Surface layer is generally PU membrane structure, and base layer is superfine fibre bundle three-dimensional braided structure.Because base cloth adopts superfine fibre, good springiness, good permeability, intensity is high, soft, and the many inherent physical property of product has substantially exceeded natural leather, and external manifestation has natural leather apparent property.And due to the space between fibre bundle and PU is narrow and fiber on active function groups less, the sanitation performance that improves superfine fiber chemical leather makes the focus that its comfort increase is industry research always.
At present, the method that improves sanitation performance of superfine fibre chemical leather is varied, but most method of modifying is just filled the material containing active functional group by physical method, can not permanently improve its sanitation performance, is mainly because physics is filled not water-fastness.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of technique that improves sanitation performance of superfine fibre chemical leather, can increase superfine fiber chemical leather reactive group content, thereby improve lastingly its sanitation performance.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A technique that improves sanitation performance of superfine fibre chemical leather, comprises the steps:
Step 1: in the situation that liquor ratio is 50, add the concentrated sulfuric acid of superfine fiber chemical leather and mass concentration 98% in rotary drum, concentrated sulfuric acid addition is 10%～15% of superfine fiber synthetic leather base cloth weight, acts on 2～5h at 35～50 ℃;
Step 2: base cloth that step 1 was processed is repeatedly washed at normal temperatures;
Step 3: regulate body lotion pH to 6～8, the base cloth 3～8h after the glutaraldehyde action step that is 25% by mass concentration at 20～50 ℃ two washings, glutaraldehyde consumption is 9%～18% of base cloth weight;
Step 4: repeatedly salt washing under the base cloth normal temperature that step 3 was processed;
Step 5: be the crosslinked 3～6h of base cloth adding in rotary drum under 6～8 conditions after polyamino polymer and the washing of step 4 salt at 20～50 ℃, pH, and in polyamino polymer and step 3, the mol ratio of glutaraldehyde is 1 ︰ 1～1 ︰ 2;
Step 6: add aldehyde remover effect 1～2h at 30～50 ℃ in rotary drum, addition is 1%～4% of superfine fiber synthetic leather base cloth weight;
Step 7: the base cloth that step 6 was processed is washed and dries in 30～50 ℃ of water.
The frequency of washing at normal temperatures in described step 2 is 0.5～1h/ time, washes 2 ~ 4 times; The frequency of carrying out at normal temperatures salt washing in described step 4 is 0.5～2h/ time, salt washing 2 ~ 4 times; The frequency of washing in 30～50 ℃ of water in described step 7 is 0.5～2h/ time, washes 2 ~ 4 times.
In described step 3, regulate pH to 6～8th, adopt Na
2cO
3or NaHCO
3regulate.
The mesohalobic mass concentration of described step 4 is 1.5%.
In described step 5, polyamino polymer is PAMAM 1G, and structural formula is as follows:
Or be PAMAM 2G, structural formula is as follows:
Or be PAMAM 3G, structural formula is as follows:
Or be HBP-NH2, structural formula is as follows:
It is at room temperature to hang and dry in the air more than 24h that described step 7 kind is dried.
Compared with prior art, advantage of the present invention is:
Utilize the crosslinked base cloth of glutaraldehyde two-step method and polyamino polymer, form the bond of base cloth-glutaraldehyde-polyamino polymer, increase to a great extent the active function groups on base cloth, the sanitation performance of permanent raising superfine fiber chemical leather.
Base cloth water vapor permeability and every physical index after PROCESS FOR TREATMENT in application the present invention are all better than untreated base cloth.
Table 1 is each performance comparison before and after processing
Accompanying drawing explanation
Accompanying drawing is the cross-linking process schematic diagram of embodiment 1.
The specific embodiment
Below in conjunction with drawings and Examples, describe embodiments of the present invention in detail.
Embodiment 1:
A kind of concrete implementation step of technique that improves sanitation performance of superfine fibre chemical leather is as follows:
The superfine fiber synthetic leather base cloth of opening after fibre is carried out drying after acid treatment, washing, glutaraldehyde modification, salt washing, crosslinked 1G PAMAM, aldehydes removal processing, Warm Wash successively, specifically comprise the steps:
Step 1: in the situation that liquor ratio is 50, adding the concentrated sulfuric acid effect base cloth 2h of superfine fiber chemical leather and mass concentration 98% and temperature in rotary drum is 35 ℃, and wherein the amount of the concentrated sulfuric acid is 10% of base cloth weight;
Step 2: the base cloth that step 1 was processed is washed 3 times (0.5h/ time) at normal temperatures;
Step 3: regulating body lotion pH is 6, the base cloth 3h after washing with water with the glutaraldehyde that mass concentration is 25% at 25 ℃, glutaraldehyde consumption is that 9%(is with base cloth weighing scale);
Step 4: by 3 times (0.5h/ time) of step 3 gained base cloth salt washing at normal temperatures;
Step 5: the base cloth 3h after washing with 1G PAMAM effect salt in rotary drum under 25 ℃, pH=6 condition, and mol ratio 1 ︰ 1 of 1G PAMAM and glutaraldehyde;
Step 6: add aldehyde remover 2%(at 35 ℃ with base cloth weighing scale in rotary drum) effect base cloth 1h;
Step 7: finally step 6 gained base cloth is washed to 2 times (0.5h/ time) in rotary drum in 30 ℃ of water.
Crosslinked schematic diagram as shown in drawings.
Embodiment 2:
A kind of concrete implementation step of technique that improves sanitation performance of superfine fibre chemical leather is as follows:
The superfine fiber synthetic leather base cloth of opening after fibre is carried out drying after acid treatment, washing, glutaraldehyde modification, salt washing, crosslinked 2G PAMAM, aldehydes removal processing, Warm Wash successively;
Step 1: in the situation that liquor ratio is 50, adding the concentrated sulfuric acid effect base cloth 4h of superfine fiber chemical leather and mass concentration 98% and temperature in rotary drum is 45 ℃, and wherein the amount of the concentrated sulfuric acid is 15% of base cloth weight;
Step 2: the base cloth that step 1 was processed is washed 4 times (0.5h/ time) at normal temperatures;
Step 3: regulating body lotion pH is 7, the base cloth 5h after washing with water with the glutaraldehyde that mass concentration is 25% at 25 ℃, glutaraldehyde consumption is that 15%(is with base cloth weighing scale);
Step 4: by 4 times (0.5h/ time) of step 3 gained base cloth salt washing at normal temperatures;
Step 5: the base cloth 6h after washing with 1G PAMAM effect salt in rotary drum under 25 ℃, pH=7 condition, and mol ratio 1 ︰ 1.1 of 2G PAMAM and glutaraldehyde;
Step 6: add aldehyde remover 1.5%(at 35 ℃ with base cloth weighing scale in rotary drum) effect 1.5h;
Step 7: finally step 6 gained base cloth is washed to 4 times (0.5h/ time) in rotary drum in 30 ℃ of water.
Embodiment 3:
A kind of concrete implementation step of technique that improves sanitation performance of superfine fibre chemical leather is as follows:
The superfine fiber synthetic leather base cloth of opening after fibre is carried out drying after acid treatment, washing, glutaraldehyde modification, salt washing, crosslinked 3G PAMAM, Warm Wash successively;
Step 1: in the situation that liquor ratio is 50, adding the concentrated sulfuric acid effect base cloth 4h of superfine fiber chemical leather and mass concentration 98% and temperature in rotary drum is 45 ℃, and wherein the amount of the concentrated sulfuric acid is 12% of base cloth weight;
Step 2: the base cloth that step 1 was processed is washed 3 times (0.5h/ time) at normal temperatures;
Step 3: regulating body lotion pH is 7, the base cloth 3h after the glutaraldehyde that mass concentration is 25% at 25 ℃ washes with water, glutaraldehyde consumption is that 12%(is with base cloth weighing scale);
Step 4: by 3 times (0.5h/ time) of salt washing under step 3 gained base cloth normal temperature;
Step 5: the base cloth 3h after washing with 3G PAMAM effect salt in rotary drum under 25 ℃, pH=7 condition, and mol ratio 1 ︰ 1.2 of 3G PAMAM and glutaraldehyde;
Step 6: add aldehyde remover 2%(at 35 ℃ with base cloth weighing scale in rotary drum) effect 1h;
Step 7: finally step 6 gained base cloth is washed to 3 times (0.5h/ time) in 30 ℃ of water in rotary drum.
Embodiment 4:
A kind of concrete implementation step of technique that improves sanitation performance of superfine fibre chemical leather is as follows:
The superfine fiber synthetic leather base cloth of opening after fibre is carried out drying after acid treatment, washing, glutaraldehyde modification, salt washing, crosslinked HBP-NH2, aldehydes removal processing, Warm Wash successively;
Step 1: in the situation that liquor ratio is 50, adding the concentrated sulfuric acid effect base cloth 4h of superfine fiber chemical leather and mass concentration 98% and temperature in rotary drum is 50 ℃, and wherein the amount of the concentrated sulfuric acid is 15% of base cloth weight;
Step 2: the base cloth that step 1 was processed is washed 4 times (0.5h/ time) at normal temperatures;
Step 3: regulating body lotion pH is 8, the base cloth 6h after washing with water with the glutaraldehyde that mass concentration is 25% at 25 ℃, glutaraldehyde consumption is that 15%(is with base cloth weighing scale);
Step 4: step 3 gained base cloth water at normal temperature is washed to 4 times (0.5h/ time);
Step 5: use HBP-NH under 25 ℃, pH=8 condition in rotary drum
2base cloth 6h after the washing of effect salt, and HBP-NH
2mol ratio 1 ︰ 1.2 with glutaraldehyde;
Step 6: add aldehyde remover 1.5%(at 40 ℃ with base cloth weighing scale in rotary drum) effect base cloth 1h;
Step 7: finally step 6 gained base cloth is washed to 4 times (0.5h/ time) in 30 ℃ of water in rotary drum.
Embodiment 5:
A kind of concrete implementation step of technique that improves sanitation performance of superfine fibre chemical leather is as follows:
The superfine fiber synthetic leather base cloth of opening after fibre is carried out drying after acid treatment, washing, glutaraldehyde modification, salt washing, crosslinked 3G PAMAM, aldehydes removal processing, Warm Wash successively;
Step 1: in the situation that liquor ratio is 50, adding the concentrated sulfuric acid effect base cloth 4h of superfine fiber chemical leather and mass concentration 98% and temperature in rotary drum is 50 ℃, and wherein the amount of the concentrated sulfuric acid is 15% of base cloth weight;
Step 2: the base cloth that step 1 was processed is washed 4 times (0.5h/ time) at normal temperatures;
Step 3: regulating body lotion pH is 8, the base cloth 6h after washing with water with the glutaraldehyde that mass concentration is 25% at 25 ℃, glutaraldehyde consumption is that 15%(is with base cloth weighing scale);
Step 4: by 4 times (0.5h/ time) of step 3 gained base cloth salt washing at normal temperatures;
Step 5: the base cloth 6h after washing with 3G PAMAM effect salt in rotary drum under 25 ℃, pH:8 condition, and mol ratio 1 ︰ 1.5 of 3G PAMAM and glutaraldehyde;
Step 6: add aldehyde remover 2%(at 35 ℃ with base cloth weighing scale in rotary drum) effect 1.5h;
Step 7: finally step 6 gained base cloth is washed to 4 times (0.5h/ time) in 30 ℃ of water in rotary drum.
Embodiment 6:
A kind of concrete implementation step of technique that improves sanitation performance of superfine fibre chemical leather is as follows:
The superfine fiber synthetic leather base cloth of opening after fibre is carried out to acid treatment, washing, glutaraldehyde modification, salt washing, crosslinked HBP-NH successively
2, dry after aldehydes removal processing, Warm Wash;
Step 1: in the situation that liquor ratio is 50, adding the concentrated sulfuric acid effect base cloth 4h of superfine fiber chemical leather and mass concentration 98% and temperature in rotary drum is 50 ℃, and wherein the amount of the concentrated sulfuric acid is 12% of base cloth weight;
Step 2: the base cloth that step 1 was processed is washed 4 times (0.5h/ time) at normal temperatures;
Step 3: regulating body lotion pH is 8, the base cloth 6h after washing with water with the glutaraldehyde that mass concentration is 25% at 30 ℃, glutaraldehyde consumption is that 15%(is with base cloth weighing scale);
Step 4: by 4 times (0.5h/ time) of salt washing under step 3 gained base cloth normal temperature;
Step 5: use HBP-NH under 30 ℃, pH=8 condition in rotary drum
2base cloth 6h after the washing of effect salt, and HBP-NH
2mol ratio 1 ︰ 1.5 with glutaraldehyde;
Step 6: add aldehyde remover 1%(at 40 ℃ with base cloth weighing scale in rotary drum) effect 2h;
Step 7: finally step 6 gained base cloth is washed to 4 times (0.5h/ time) in 30 ℃ of water in rotary drum.
Claims (5)
1. a technique that improves sanitation performance of superfine fibre chemical leather, is characterized in that, comprises the steps:
Step 1: in the situation that liquor ratio is 50, add the concentrated sulfuric acid of superfine fiber chemical leather and mass concentration 98% in rotary drum, concentrated sulfuric acid addition is 10%～15% of superfine fiber synthetic leather base cloth weight, acts on 2～5h at 35～50 ℃;
Step 2: the base cloth that step 1 was processed is repeatedly washed at normal temperatures;
Step 3: regulate body lotion pH to 6～8, the base cloth 3～8h after the glutaraldehyde action step that is 25% by mass concentration at 20～50 ℃ two washings, glutaraldehyde consumption is 9%～18% of base cloth weight;
Step 4: repeatedly salt washing under the base cloth normal temperature that step 3 was processed;
Step 5: be the crosslinked 3～6h of base cloth adding in rotary drum under 6～8 conditions after polyamino polymer and the washing of step 4 salt at 20～50 ℃, pH, and in polyamino polymer and step 3, the mol ratio of glutaraldehyde is 1 ︰ 1～1 ︰ 2;
Step 6: add aldehyde remover effect 1～2h at 30～50 ℃ in rotary drum, addition is 1%～4% of superfine fiber synthetic leather base cloth weight;
Step 7: the base cloth that step 6 was processed is washed and dries in 30～50 ℃ of water;
Wherein, in described step 5, polyamino polymer is PAMAM 1G, and structural formula is as follows:
Or be PAMAM 2G, structural formula is as follows
Or be PAMAM 3G, structural formula is as follows
Or be HBP-NH
2, structural formula is as follows
2. the technique of raising sanitation performance of superfine fibre chemical leather according to claim 1, is characterized in that: the frequency of washing at normal temperatures in described step 2 is 0.5～1h/ time, washes 2～4 times; The frequency of carrying out at normal temperatures salt washing in described step 4 is 0.5～2h/ time, salt washing 2～4 times; The frequency of washing in 30～50 ℃ of water in described step 7 is 0.5～2h/ time, washes 2～4 times.
3. the technique of raising sanitation performance of superfine fibre chemical leather according to claim 1, is characterized in that: in described step 3, regulate pH to 6～8th, adopt Na
2cO
3or NaHCO
3regulate.
4. the technique of raising sanitation performance of superfine fibre chemical leather according to claim 1, is characterized in that: the mesohalobic mass concentration of described step 4 is 1.5%.
5. the technique of raising sanitation performance of superfine fibre chemical leather according to claim 1, is characterized in that: in described step 7, drying is at room temperature to hang and dry in the air more than 24h.
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| CN105970664B (en) * | 2016-05-03 | 2018-10-19 | 安安(中国)有限公司 | A kind of processing method of the superfine fiber chemical leather with higher sanitation performance quality |
| CN107541078A (en) * | 2017-09-17 | 2018-01-05 | 钱景 | A kind of silk fibre composite of graphene oxide parcel and preparation method thereof |
| CN107556762A (en) * | 2017-09-17 | 2018-01-09 | 钱景 | A kind of titanic oxide/zinc oxide/silk/salix monogolica composite and preparation method |
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