CN103289360A - Calendering thermoplastic polyurethane and preparation method thereof - Google Patents
Calendering thermoplastic polyurethane and preparation method thereof Download PDFInfo
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- CN103289360A CN103289360A CN2013102069384A CN201310206938A CN103289360A CN 103289360 A CN103289360 A CN 103289360A CN 2013102069384 A CN2013102069384 A CN 2013102069384A CN 201310206938 A CN201310206938 A CN 201310206938A CN 103289360 A CN103289360 A CN 103289360A
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Abstract
The invention discloses calendering thermoplastic polyurethane and a preparation method thereof for solving the technical problem that roll banding occurs in the existing preparation method of calendering thermoplastic polyurethane. The technical scheme is as follows: long-chain polyhydric alcohol, diisocyanate, a chain extender, an antioxidant, an ultraviolet light absorber, whale fat wax and long-chain fatty acid salt are added into a twin screw reactor to form a TPU (Thermoplastic Polyurethane) melt; and then, whale fat wax and long-chain fatty acid salt are added into the twin screw reactor to be mixed, so that whale fat wax and long-chain fatty acid salt are uniformly dispersed in the TPU melt, and then, the mixture is extruded and pelleted. According to the method, an additive is added into the TPU melt and is separated out from the TPU melt in the process. An isolating layer is formed between the TPU melt and a metal roller of a calender, so that the adhesive force between the TPU melt and the metal roller of the calender is reduced. Thus, the TPU melt can be completely peeled from the surface of the metal roller, therefore, the technical problem of roll banding is solved.
Description
Technical field
The present invention relates to a kind of thermoplastic polyurethane, particularly a kind of calendering type thermoplastic polyurethane.The preparation method who also relates to this calendering type thermoplastic polyurethane.
Background technology
Thermoplastic polyurethane (TPU) but have good elasticity body performance and thermoplastic processibility, therefore be widely used in the industrial production.Wherein a kind of purposes is to adopt rolling press melt technology, makes TPU film or TPU coated fabric.
Document " patent publication No. is the Chinese invention patent of CN1408768A " discloses a kind of prescription of full environment-friendly type TPU film and the manufacture method of calendering.But its way is that desired additives is mixed in homogenizer with the TPU major ingredient, this method has increased the difficulty of TPU rolling processing preparation work, constantly measure each component in the prescription as need, the suitability for industrialized production that is unfavorable for quick serialization, and can cause the amount loss of additive bigger, as be attached on the stirrer wall.
Summary of the invention
In order to overcome the deficiency that roll banding appears in the preparation method who has calendering type thermoplastic polyurethane now, the invention provides a kind of calendering type thermoplastic polyurethane and preparation method thereof.This method adds additive in the TPU melt, separate out additive in the TPU melt in the course of processing, between TPU melt and rolling press metallic roll, form sealing coat, thereby reduce the adhesive power of TPU melt and rolling press metallic roll, make the TPU melt solve the technical problem of background technology roll banding intactly from the metallic roll sur-face peeling.
The technical solution adopted for the present invention to solve the technical problems is: a kind of calendering type thermoplastic polyurethane is characterized in being prepared from according to following component and ratio.
A kind of preparation method of above-mentioned calendering type thermoplastic polyurethane is characterized in may further comprise the steps:
According to following component and ratio, each component concentration sum equals 100%.
Above-mentioned raw materials is added double-screw reactor, react 30～80 seconds after, form the TPU melt.Add the cured and hard soap of whale fat that accounts for TPU melt 0.5%～3% then in the double-screw reactor, mixed 3～10 seconds, the cured and hard soap of whale fat is evenly spread in the TPU melt, then with the mixture extruding pelletization.
The invention has the beneficial effects as follows: because this method adds additive in the TPU melt, separate out additive in the TPU melt in the course of processing, between TPU melt and rolling press metallic roll, form sealing coat, thereby reduce the adhesive power of TPU melt and rolling press metallic roll, make the TPU melt solve the technical problem of background technology roll banding intactly from the metallic roll sur-face peeling.
Describe the present invention in detail below in conjunction with embodiment.
Embodiment
Below by the realization of the specific embodiment the present invention that further sharpens understanding, but the present invention is not limited to following specific embodiment.
A kind of calendering type thermoplastic polyurethane comprises the TPU synthesis material, regulates the additive of TPU melt and metal adhesion, and system component calculates with part by weight:
Industrialization calendering TPU preparation process of the present invention may further comprise the steps:
Step 1: utilize the TPU synthesis material to prepare the TPU melt;
Step 2: the additive that will regulate TPU melt and metal adhesion joins in the prepared melt of step 1, and the consumption of additive is 0.5%～3% of TPU melt quality, after mixing, with the mixture extruding pelletization.
Studies show that TPU melt and metal have stronger adhesivity.The present invention is namely based on this principle, the additive that employing can be separated out in the TPU melt, between TPU melt and rolling press metallic roll, form sealing coat, thereby reduce the adhesive power of TPU melt and rolling press metallic roll, can reach intactly from the metallic roll sur-face peeling.
Adopt the calendering TPU of the present invention's preparation, regulated the adhesivity of TPU melt and metallic roll, improved the stability in the TPU rolling processing process, can enough carry out large batch of suitability for industrialized production, thereby solve the problem of roll banding substantially.
At first the TPU synthesis material is added double-screw reactor by a certain percentage, react 30～80 seconds after, form the TPU melt.Add the cured and hard soap of whale fat that accounts for TPU melt 0.5%～3% then in the double-screw reactor, mixed 3～10 seconds, the cured and hard soap of whale fat is evenly spread in the TPU melt.At last with this mixture extruding pelletization.
The invention has the beneficial effects as follows: by the TPU pellet of the present invention's preparation, contained and regulated TPU melt and the adhering additive of metallic roll, add man-hour in the downstream, do not need to mix in stirrer with additive, namely can carry out rolling processing, so additive can not be attached on the stirrer wall, simplified processing preparation work simultaneously, improved production efficiency.
Claims (2)
1. a calendering type thermoplastic polyurethane is characterized in that being prepared from according to following component and ratio;
2. the preparation method of the described calendering type of claim 1 thermoplastic polyurethane, it is characterized in that may further comprise the steps: according to following component and ratio, each component concentration sum equals 100%;
Above-mentioned raw materials is added double-screw reactor, react 30～80 seconds after, form the TPU melt; Add the cured and hard soap of whale fat that accounts for TPU melt 0.5%～3% then in the double-screw reactor, mixed 3～10 seconds, the cured and hard soap of whale fat is evenly spread in the TPU melt, then with the mixture extruding pelletization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102069384A CN103289360A (en) | 2013-05-30 | 2013-05-30 | Calendering thermoplastic polyurethane and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102069384A CN103289360A (en) | 2013-05-30 | 2013-05-30 | Calendering thermoplastic polyurethane and preparation method thereof |
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| CN103289360A true CN103289360A (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102069384A Pending CN103289360A (en) | 2013-05-30 | 2013-05-30 | Calendering thermoplastic polyurethane and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104119496A (en) * | 2014-07-14 | 2014-10-29 | 高鼎精细化工(昆山)有限公司 | Preparation method of internally mixed and rolled TPU elastomer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6538075B1 (en) * | 1999-08-18 | 2003-03-25 | Basf Aktiengesellschaft | Thermoplastic polyurethane |
| CN102558830A (en) * | 2012-02-10 | 2012-07-11 | 上海联景高分子材料有限公司 | Preparation method of transparent film-grade thermoplastic polyurethane elastomer |
| CN103059553A (en) * | 2012-12-27 | 2013-04-24 | 奥斯汀新材料（张家港）有限公司 | A method for preparing a non-blomming thermoplastic polyurethane elastomer |
| CN103073697A (en) * | 2013-01-08 | 2013-05-01 | 东莞市吉鑫高分子科技有限公司 | Processing technology of thermoplastic polyurethane elastomer |
-
2013
- 2013-05-30 CN CN2013102069384A patent/CN103289360A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6538075B1 (en) * | 1999-08-18 | 2003-03-25 | Basf Aktiengesellschaft | Thermoplastic polyurethane |
| CN102558830A (en) * | 2012-02-10 | 2012-07-11 | 上海联景高分子材料有限公司 | Preparation method of transparent film-grade thermoplastic polyurethane elastomer |
| CN103059553A (en) * | 2012-12-27 | 2013-04-24 | 奥斯汀新材料（张家港）有限公司 | A method for preparing a non-blomming thermoplastic polyurethane elastomer |
| CN103073697A (en) * | 2013-01-08 | 2013-05-01 | 东莞市吉鑫高分子科技有限公司 | Processing technology of thermoplastic polyurethane elastomer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104119496A (en) * | 2014-07-14 | 2014-10-29 | 高鼎精细化工(昆山)有限公司 | Preparation method of internally mixed and rolled TPU elastomer |
| CN104119496B (en) * | 2014-07-14 | 2016-05-11 | 高鼎精细化工(昆山)有限公司 | Banburying calendering type TPU method for producing elastomers |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130911 |
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| WD01 | Invention patent application deemed withdrawn after publication |