CN110563982A - Preparation method of flame-retardant optical cable filler - Google Patents
Preparation method of flame-retardant optical cable filler Download PDFInfo
- Publication number
- CN110563982A CN110563982A CN201910816546.7A CN201910816546A CN110563982A CN 110563982 A CN110563982 A CN 110563982A CN 201910816546 A CN201910816546 A CN 201910816546A CN 110563982 A CN110563982 A CN 110563982A
- Authority
- CN
- China
- Prior art keywords
- asphalt
- flame
- straw powder
- balls
- optical cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4486—Protective covering
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2395/00—Bituminous materials, e.g. asphalt, tar or pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2421/00—Characterised by the use of unspecified rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
Abstract
The invention discloses a preparation method of a flame-retardant optical cable filler, which is characterized in that ash generated after straw combustion is attached to the surface of an asphalt strip, the asphalt strip is used as the filler to produce an optical cable protective layer containing the asphalt strip, when an optical cable fires, the asphalt strip plays a physical barrier role to prevent the fire from spreading, and the problems that the conventional flame-retardant filler is limited in flame-retardant effect, cannot achieve an ideal flame-retardant effect and needs to be improved are solved.
Description
Technical Field
The invention relates to the field of optical cables, in particular to a preparation method of a flame-retardant optical cable filler.
Background
Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups as telecommunication cable assemblies.
The flame-retardant filler is required to be added in the manufacturing process of the existing optical cable so as to improve the flame-retardant property of the optical cable, however, the existing flame-retardant filler has limited flame-retardant effect, cannot achieve ideal flame-retardant effect, and needs to be improved.
Disclosure of Invention
The invention aims to provide a preparation method of a flame-retardant optical cable filler, which aims to solve the technical problems.
In order to solve the technical problems, the invention adopts the following technical scheme:
The preparation method of the flame-retardant optical cable filler comprises the following steps:
(1) Smashing ash generated after straw combustion into straw powder, simultaneously manufacturing a plurality of asphalt balls with the diameter of 1 cm, uniformly mixing the asphalt balls and the straw powder to obtain a mixture, putting the mixture into heating equipment for heating, observing the state of the asphalt balls, stopping heating when the asphalt balls begin to soften, shaking the heating equipment to roll the asphalt balls in the straw powder, fully mixing the asphalt balls and the straw powder, and completely covering the surfaces of the asphalt balls with the straw powder;
(2) Taking the asphalt balls out of the straw powder, pressing the asphalt balls into long-strip-shaped asphalt strips, heating and melting the flame-retardant rubber, immersing the asphalt strips into the flame-retardant rubber, controlling the immersion time to be 3-5 seconds, taking the asphalt strips out after the immersion is finished, drying the asphalt strips under a fan, and pulling out rubber wires on the surfaces of the asphalt strips while drying the asphalt strips.
Preferably, in the step (1), after the ash generated by burning the straws is smashed into straw powder, the straw powder is filtered by a sieve with 80-100 meshes, and the straw powder which does not pass through the sieve with 80-100 meshes is removed.
Preferably, after the ash generated by burning the straws is smashed into straw powder, the straw powder is filtered by a 90-mesh screen, and the straw powder which does not pass through the 90-mesh screen is removed.
Preferably, in the step (1), the heating temperature of the heating device is 200 ℃.
Preferably, in the step (2), an iron comb is used for scraping the asphalt strip along two sides of the asphalt strip during wire drawing, so that the drawn rubber wire is perpendicular to the rubber strip, and the length of the rubber wire is controlled to be 1-3 cm.
Preferably, in the step (2), before the asphalt strip is immersed in the flame-retardant rubber, a plurality of grooves are cut on the surface of the asphalt strip along the length direction of the asphalt strip.
Preferably, the length of the asphalt strip in the step (2) is 2-3 cm.
Preferably, in the step (1), when the heating device is shaken to roll the asphalt balls in the straw powder, the rolling time needs to be controlled within 2-3 minutes, and the heating device needs to be started every 30 seconds to heat the asphalt balls for 10 seconds to prevent the asphalt balls from solidifying and hardening.
The invention has the beneficial effects that:
1. Through the ashes of the attached straw burning in pitch strip surface, produce the optical cable protective layer that contains the pitch strip as the filler with the pitch strip, when the optical cable is on fire, the pitch strip plays the physics separation effect, prevents the intensity of a fire to spread, and it is limited to have solved current fire-retardant filler flame retardant efficiency, can't reach the flame retardant efficiency of ideal, needs to make the modified problem.
2. The rubber wires are pulled out of the surface of the asphalt strip, so that the asphalt strip and the optical cable protective layer are combined more tightly when the asphalt strip is used as a filler and put into optical cable protective layer production equipment.
Detailed Description
The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
the preparation method of the flame-retardant optical cable filler comprises the following steps:
(1) Smashing ash generated after straw combustion into straw powder, simultaneously manufacturing a plurality of asphalt balls with the diameter of 1 cm, uniformly mixing the asphalt balls and the straw powder to obtain a mixture, putting the mixture into heating equipment for heating, observing the state of the asphalt balls, stopping heating when the asphalt balls begin to soften, shaking the heating equipment to roll the asphalt balls in the straw powder, fully mixing the asphalt balls and the straw powder, and completely covering the surfaces of the asphalt balls with the straw powder;
(2) Taking the asphalt balls out of the straw powder, pressing the asphalt balls into long-strip-shaped asphalt strips, heating and melting the flame-retardant rubber, immersing the asphalt strips into the flame-retardant rubber, controlling the immersion time to be 3-5 seconds, taking the asphalt strips out after the immersion is finished, drying the asphalt strips under a fan, and pulling out rubber wires on the surfaces of the asphalt strips while drying the asphalt strips.
In the step (1), the ash generated after the straw is burnt is smashed into straw powder, the straw powder is filtered by a sieve with 80-100 meshes, and the straw powder which does not pass through the sieve with 80-100 meshes is removed.
Smashing the ash generated after the straw is burnt into straw powder, filtering the straw powder through a 90-mesh screen, and removing the straw powder which does not pass through the 90-mesh screen.
in the step (1), the heating temperature of the heating equipment is 200 ℃.
in the step (2), when drawing the wire, scraping the asphalt strips along two sides of the asphalt strips by using an iron comb, so that the pulled rubber wires are perpendicular to the rubber strips, and the length of the rubber wires is controlled to be 1-3 cm.
In the step (2), before the asphalt strip is immersed in the flame-retardant rubber, a plurality of grooves are required to be cut on the surface of the asphalt strip along the length direction of the asphalt strip.
The length of the asphalt strip in the step (2) is 2-3 cm.
In the step (1), when the heating equipment is shaken to roll the asphalt balls in the straw powder, the rolling time needs to be controlled to be 2-3 minutes, and the heating equipment needs to be started every 30 seconds to heat the asphalt balls for 10 seconds to prevent the asphalt balls from solidifying and hardening.
the foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. the preparation method of the flame-retardant optical cable filler is characterized by comprising the following steps of: the method comprises the following steps:
(1) Smashing ash generated after straw combustion into straw powder, simultaneously manufacturing a plurality of asphalt balls with the diameter of 1 cm, uniformly mixing the asphalt balls and the straw powder to obtain a mixture, putting the mixture into heating equipment for heating, observing the state of the asphalt balls, stopping heating when the asphalt balls begin to soften, shaking the heating equipment to roll the asphalt balls in the straw powder, fully mixing the asphalt balls and the straw powder, and completely covering the surfaces of the asphalt balls with the straw powder;
(2) taking the asphalt balls out of the straw powder, pressing the asphalt balls into long-strip-shaped asphalt strips, heating and melting the flame-retardant rubber, immersing the asphalt strips into the flame-retardant rubber, controlling the immersion time to be 3-5 seconds, taking the asphalt strips out after the immersion is finished, drying the asphalt strips under a fan, and pulling out rubber wires on the surfaces of the asphalt strips while drying the asphalt strips.
2. The method for preparing the flame-retardant optical cable filler according to claim 1, wherein the method comprises the following steps: in the step (1), after the ash generated by burning the straws is smashed into straw powder, filtering the straw powder through a sieve of 80-100 meshes, and removing the straw powder which does not pass through the sieve of 80-100 meshes.
3. the method for preparing the flame-retardant optical cable filler according to claim 2, wherein the method comprises the following steps: smashing the ash generated after the straw is burnt into straw powder, filtering the straw powder through a 90-mesh screen, and removing the straw powder which does not pass through the 90-mesh screen.
4. The method for preparing the flame-retardant optical cable filler according to claim 1, wherein the method comprises the following steps: in the step (1), the heating temperature of the heating equipment is 200 ℃.
5. The method for preparing the flame-retardant optical cable filler according to claim 1, wherein the method comprises the following steps: in the step (2), when drawing the wire, scraping the asphalt strip along two sides of the asphalt strip by using an iron comb, so that the pulled rubber wire is vertical to the rubber strip, and the length of the rubber wire is controlled to be 1-3 cm.
6. The method for preparing the flame-retardant optical cable filler according to claim 1, wherein the method comprises the following steps: in the step (2), before the asphalt strip is immersed in the flame-retardant rubber, a plurality of grooves need to be cut on the surface of the asphalt strip along the length direction of the asphalt strip.
7. The method for preparing the flame-retardant optical cable filler according to claim 1, wherein the method comprises the following steps: the length of the asphalt strip in the step (2) is 2-3 cm.
8. the method for preparing the flame-retardant optical cable filler according to claim 1, wherein the method comprises the following steps: in the step (1), when the heating equipment is shaken to roll the asphalt balls in the straw powder, the rolling time needs to be controlled to be 2-3 minutes, and the heating equipment needs to be started every 30 seconds to heat the asphalt balls for 10 seconds to prevent the asphalt balls from solidifying and hardening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816546.7A CN110563982A (en) | 2019-08-30 | 2019-08-30 | Preparation method of flame-retardant optical cable filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816546.7A CN110563982A (en) | 2019-08-30 | 2019-08-30 | Preparation method of flame-retardant optical cable filler |
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| Publication Number | Publication Date |
|---|---|
| CN110563982A true CN110563982A (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910816546.7A Pending CN110563982A (en) | 2019-08-30 | 2019-08-30 | Preparation method of flame-retardant optical cable filler |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102443228A (en) * | 2011-10-18 | 2012-05-09 | 安徽金田通信科技实业有限公司 | Fire resistant cable filler and preparation method thereof |
| CN107915947A (en) * | 2017-12-01 | 2018-04-17 | 安徽渡江电缆集团有限公司 | A kind of Novel cable stuffing material |
| CN108017822A (en) * | 2017-12-01 | 2018-05-11 | 安徽渡江电缆集团有限公司 | A kind of cable packing material |
| US20180172938A1 (en) * | 2015-06-19 | 2018-06-21 | Corning Optical Communications LLC | Optical fiber cable and method of forming an optical fiber cable |
-
2019
- 2019-08-30 CN CN201910816546.7A patent/CN110563982A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102443228A (en) * | 2011-10-18 | 2012-05-09 | 安徽金田通信科技实业有限公司 | Fire resistant cable filler and preparation method thereof |
| US20180172938A1 (en) * | 2015-06-19 | 2018-06-21 | Corning Optical Communications LLC | Optical fiber cable and method of forming an optical fiber cable |
| CN107915947A (en) * | 2017-12-01 | 2018-04-17 | 安徽渡江电缆集团有限公司 | A kind of Novel cable stuffing material |
| CN108017822A (en) * | 2017-12-01 | 2018-05-11 | 安徽渡江电缆集团有限公司 | A kind of cable packing material |
Non-Patent Citations (1)
| Title |
|---|
| 慕成斌 等: "《通信光纤光缆制造设备及产业发展》", 31 July 2017, 同济大学出版社 * |
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Application publication date: 20191213 |
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| RJ01 | Rejection of invention patent application after publication |