CN101935402A - Preparation method of waterproof and ventilated PU (Polyurethane) plastic films - Google Patents
Preparation method of waterproof and ventilated PU (Polyurethane) plastic films Download PDFInfo
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- CN101935402A CN101935402A CN200910069500XA CN200910069500A CN101935402A CN 101935402 A CN101935402 A CN 101935402A CN 200910069500X A CN200910069500X A CN 200910069500XA CN 200910069500 A CN200910069500 A CN 200910069500A CN 101935402 A CN101935402 A CN 101935402A
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- breathable
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Abstract
The invention relates to a preparation method of waterproof and ventilated PU (Polyurethane) plastic films, which is mainly characterized in that PU high polymers are prepared into colloids; then a cation drying agent and a cation bridging agent of 1% to 10% corresponding to the colloids are mixed and fully stirred with the PU colloids to form standby materials; and finally, the standby materials are prepared into plastic films with the thickness greater than or equal to 0.01mm so that the films have waterproof and ventilated properties.
Description
Technical field
The present invention relates to a kind of water infiltration of can not making, but can make the PU plastic film manufacture method of the waterproof and breathable of air penetration.
Background technology
Polyamine base ethyl formate resin (poly-urethane is called for short PU) is one of macromolecular material that develops in the last thirty years; PU uses very general water-proof material, for example is used in the waterproof on roof etc.The PU material also is used goods such as making film or artificial leather; Yet, no matter be to utilize PU polymeric particles hot melt molding, or use the PU polymeric sol, or the diffusing made finished product of liquid of water-soluble PU polymer, as waterproof membrane, foaming cotton, leather elastomerics, fiber etc., all can't produce ventilative character, if in the PU material, add whipping agent as pore-forming material, then can become too big,, can't reach water-proof function so that cause the infiltration of water in the formed ventilative aperture of PU material.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcomes the above-mentioned defective that prior art exists, and a kind of PU plastic film manufacture method of waterproof and breathable is provided, and it can reach water pressure resistance, waterproof, gas-pervious effect.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of PU plastic film manufacture method of waterproof and breathable is characterized in that, comprising:
(d) the PU high molecular polymer is made colloid;
(e) will be that 1%～10% positively charged ion dryingagent and positively charged ion bridging agent are mixed in this PU colloid and fill part to stir and become stand-by material with respect to the per-cent of this colloid;
(f) described stand-by material is made the plastic film of thickness 〉=0.01mm, promptly made this film possess the character of waterproof and breathable.
The PU plastic film manufacture method of aforesaid waterproof and breathable, wherein in (a) step, PU high molecular polymer processing treatment become the PU particle after, again with more than this PU particle heat to 100 ℃, to form described PU colloid.
The PU plastic film manufacture method of aforesaid waterproof and breathable wherein in (a) step, becomes PU solvent-borne type adhesive paste with PU high molecular polymer processing treatment, adds alcohol ether solvents again it is diluted to form the PU colloid.
The PU plastic film manufacture method of aforesaid waterproof and breathable wherein in (a) step, becomes PU water solvent dispersion agent with PU high molecular polymer processing treatment, adds thickening material and stiffening agent again to form the PU colloid.
The PU plastic film manufacture method of aforesaid waterproof and breathable, wherein the stirring in (b) step is to carry out in the environment of normal temperature.
The PU plastic film manufacture method of aforesaid waterproof and breathable, the wherein stirring in (b) step is to carry out in Heating temperature is environment below 100 ℃.
Feature of the present invention, be high molecular PU material breakdown is become dispersed, glue or the aqueous solution and contain the part negatively charged ion, other material that adds cation again in this material, by negatively charged ion and positively charged ion adsorb mutually and make polymer bond molecule produce from, and then form and to pass through for air molecule, but water molecules can't through hole the material of micro-pore, when being film more than the thickness 0.01mm, can reach water pressure resistance, waterproof, gas-pervious effect with this forming materials.
Borrow the made film of preceding method, can be applicable to the interlayer of physiology patch, waterproof and breathable overcoat or raincoat that therapeutic medical patch, baby or adult use with paper diaper, women etc., range of application is very extensive.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the manufacturing process synoptic diagram of first embodiment of the invention.
Fig. 2 is the manufacturing process synoptic diagram of second embodiment of the invention.
Fig. 3 is the manufacturing process synoptic diagram of third embodiment of the invention.
Embodiment
The PU plastic film manufacture method of waterproof and breathable provided by the invention, it includes following step::
(a) the PU high molecular polymer is made colloid;
(b) will be that 1%～10% positively charged ion dryingagent and positively charged ion bridging agent are mixed in this PU colloid and fill part to stir and become stand-by material with respect to the per-cent of this colloid;
(c) described stand-by material is made the plastic film of thickness 〉=0.01mm, promptly made this film possess the character of waterproof and breathable.
As shown in Figure 1, wherein, in (a) step, PU high molecular polymer processing treatment can be become the PU particle after, again this PU particle is hot melt to more than 100 ℃, to form described PU colloid.Also can as shown in Figure 2 PU high molecular polymer processing treatment be become PU solvent-borne type adhesive paste, add alcohol ether solvents again it is diluted to form the PU colloid.Also can as shown in Figure 3 PU high molecular polymer processing treatment be become PU water solvent dispersion agent, add thickening material and stiffening agent again to form the PU colloid.The viscosity of this colloid all can between the scope of 1000～30000P.
Stirring in aforementioned (b) step can be carried out in the environment of normal temperature, also can carry out in Heating temperature is environment below 100 ℃.
Described dryingagent can be to be cationic silicon dryingagent, silicon drying bridging agent, fluorine dryingagent, fluorine drying bridging agent etc.
After the present invention becomes dispersed, glue or the aqueous solution with high molecular PU material breakdown, it is the negatively charged ion that contains part, therefore, add the dryingagent and bridging agent of cation at this material after, can by negatively charged ion and positively charged ion adsorb mutually and make polymer bond molecule produce from, and then form and to pass through for air molecule, but water molecules can't through hole the material of micro-pore, when being film more than the thickness 0.01mm, can reach water pressure resistance, waterproof, gas-pervious effect with this forming materials.In addition, described film except have can the character of natural permeable because PU glue itself has elasticity, therefore, be subjected to hydraulic pressure and do the time spent, gas-pervious PU colloid can press hole, strengthens the water-proof function of PU glue on the contrary.
The aforementioned PU colloid of making can also be recovered when having flaw (if) and be reprocessed into aforesaid PU granular solid polymer, PU flux type adhesive paste or PU water soluble dispersing agent, makes new waterproof breathable membrane to repeat aforesaid processing procedure.
By the made film of preceding method, can be applicable to the interlayer of physiology patch, waterproof and breathable overcoat or raincoat that therapeutic medical patch, baby or adult use with paper diaper, women etc., range of application is very extensive.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (6)
1. the PU plastic film manufacture method of a waterproof and breathable is characterized in that, comprising:
(a) the PU high molecular polymer is made colloid;
(b) will be that 1%～10% positively charged ion dryingagent and positively charged ion bridging agent are mixed in this PU colloid and fill part to stir and become stand-by material with respect to the per-cent of this colloid;
(c) described stand-by material is made the plastic film of thickness 〉=0.01mm, promptly made this film possess the character of waterproof and breathable.
2. the PU plastic film manufacture method of waterproof and breathable according to claim 1 is characterized in that: in described (a) step, PU high molecular polymer processing treatment become the PU particle after, again with more than this PU particle heat to 100 ℃, to form described PU colloid.
3. the PU plastic film manufacture method of waterproof and breathable according to claim 1 is characterized in that: in described (a) step, PU high molecular polymer processing treatment is become PU solvent-borne type adhesive paste, add alcohol ether solvents again it is diluted to form the PU colloid.
4. the PU plastic film manufacture method of waterproof and breathable according to claim 1 is characterized in that: in described (a) step, PU high molecular polymer processing treatment is become PU water solvent dispersion agent, add thickening material and stiffening agent again to form the PU colloid.
5. according to the PU plastic film manufacture method of each described waterproof and breathable in the claim 1 to 4, it is characterized in that: the stirring in described (b) step is to carry out in the environment of normal temperature.
6. according to the PU plastic film manufacture method of each described waterproof and breathable in the claim 1 to 4, it is characterized in that: the stirring in described (b) step is to carry out in Heating temperature is environment below 100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910069500XA CN101935402A (en) | 2009-06-30 | 2009-06-30 | Preparation method of waterproof and ventilated PU (Polyurethane) plastic films |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910069500XA CN101935402A (en) | 2009-06-30 | 2009-06-30 | Preparation method of waterproof and ventilated PU (Polyurethane) plastic films |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101935402A true CN101935402A (en) | 2011-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910069500XA Pending CN101935402A (en) | 2009-06-30 | 2009-06-30 | Preparation method of waterproof and ventilated PU (Polyurethane) plastic films |
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| CN (1) | CN101935402A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113288160A (en) * | 2021-06-02 | 2021-08-24 | 华南理工大学 | Multi-information acquisition equipment based on conductive fabric and manufacturing method |
-
2009
- 2009-06-30 CN CN200910069500XA patent/CN101935402A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113288160A (en) * | 2021-06-02 | 2021-08-24 | 华南理工大学 | Multi-information acquisition equipment based on conductive fabric and manufacturing method |
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Open date: 20110105 |