CN104592928A - Synthesis method of polyurethane communication cable pouring sealant - Google Patents
Synthesis method of polyurethane communication cable pouring sealant Download PDFInfo
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- CN104592928A CN104592928A CN201410848421.XA CN201410848421A CN104592928A CN 104592928 A CN104592928 A CN 104592928A CN 201410848421 A CN201410848421 A CN 201410848421A CN 104592928 A CN104592928 A CN 104592928A
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Abstract
The invention relates to a synthesis method of a polyurethane communication cable pouring sealant. The synthesis method comprises the following steps: adding HTPB, an active diluent, an anti-aging agent and sub-nanometer superfine hollow bead carbon to a reaction kettle and hydrating under certain excess pressure; cooling until a room temperature is achieved and adding a defoamer, stirring under the certain excess pressure and discharging the material into an airtight container for later use, thereby obtaining a component A; adding the blended liquefied MDI and a catalyst to the reaction kettle, stirring under the certain excess pressure, discharging the material into the airtight container for later use, thereby containing a component B; evenly mixing the components A and B and pouring the mixture into a branched communication cable jacket, and thoroughly curing to obtain the polyurethane communication cable pouring sealant. According to the synthesis method of the polyurethane communication cable pouring sealant, the operation is convenient, the control is easy, the steps are optimized, the formula is reasonable and the cost is low; the number of air pores can be reduced effectively and the pouring defects can be reduced; the sub-nanometer superfine hollow bead carbon is added to the prepared polyurethane communication cable pouring sealant to effectively improve the mechanical properties of the pouring sealant and the adjustment of the curing speed can be realized.
Description
Technology neck and
The present invention relates to polymer joint sealant material synthesis technology, particularly relate to a kind of urethane telecommunication cable joint sealant synthetic method.
Background technology
Polyurethane material is widely used in the embedding of electrical equipment and cable.There is low solidification internal stress, the cold-hot cycle performance of good stability to hydrolysis resistance, electrical property and excellence, overcome epoxy resin cold-hot circulation and shock-resistant etc. in Problems existing.
Polyurethane pouring sealant preparation method has two kinds usually, and one is single stage method (also claiming direct method), and one is pre-polymerization method.Single stage method is that elastic polyurethane Embedding Material is made in direct for the auxiliary agents such as multi-hydroxy polyether or polyester, polyisocyanates, chainextender, catalyzer hybrid reaction solidification.Pre-polymerization method first polyethers or polyester and excessive polyisocyanates is reacted to make ending isocyanate prepolymer, and then prepolymer and other auxiliary agent hybrid reaction are solidified and make elasticity Embedding Material.
Existing one-step technology is simple, and formula adjustment is easy, and quick solidifying, prepares joint sealant viscosity little, good leveling property, and forming operation is simple, but reaction is sometimes wayward.Pre-polymerization method technique is more complicated, and after mixing, liquid viscosity is large, easily bring a large amount of bubble into, but product performance is better.
At present, also there is not a kind of synthetic method can taking into account the performances such as control convenience, process optimization, constant product quality.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of simple operation, control is easy, process optimization, formula are reasonable, be easy to industrialization, with low cost, effectively can reduce pore, reduce pouring defect, add the ultra-fine hollow bead charcoal of Ya Na meter in prepared urethane telecommunication cable joint sealant, effectively can improve the mechanical property of joint sealant, and the urethane telecommunication cable joint sealant synthetic method of the adjustment to curing speed can be realized.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
A kind of urethane telecommunication cable joint sealant synthetic method, comprises the steps:
HTPB, reactive thinner, anti-aging agent, the ultra-fine hollow bead charcoal of Ya Na meter are added reactor, dewaters under certain overbottom pressure;
Be down to room temperature and add defoamer, continue to stir under certain overbottom pressure, discharging is for subsequent use in encloses container, obtains component A;
Hybrid liguid MDI and catalyzer are added reactor, stirs under certain overbottom pressure, discharging is for subsequent use in encloses container, obtains B component;
A, B component are mixed and after being poured into separated time in telecommunications cable jackets, solidifying completely, obtain urethane telecommunication cable joint sealant.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described HTPB, reactive thinner, anti-aging agent, the ultra-fine hollow bead charcoal of Ya Na meter are added reactor, dewater under certain overbottom pressure.Being implemented as follows of step:
According to massfraction ratio, be the HTPB of 1.0mmol/g by 10 ~ 15% hydroxyl values, 18 ~ 22% hydroxyl values are the reactive thinner of 3.0mmol/g, anti-aging agent, the ultra-fine hollow bead charcoal of 5 ~ 10% sub-nanometer of 6 ~ 8% add reactor, be warming up to 100 ~ 110 DEG C, dewater 50 ~ 60min under 1.5 ~ 2.0kPa overbottom pressure.
Further, described in be down to room temperature and add defoamer, continue to stir under certain overbottom pressure, discharging is for subsequent use in encloses container, obtains being implemented as follows of component A step:
Be down to room temperature and add the defoamer that massfraction is 4.2 ~ 5.6%, continue stirring 20 ~ 30min under 1.5 ~ 2.0kPa overbottom pressure, discharging is for subsequent use in encloses container, obtains component A.
Further, described Hybrid liguid MDI and catalyzer are added reactor, stir under certain overbottom pressure, discharging is for subsequent use in encloses container, obtains being implemented as follows of B component step:
According to massfraction, be that the Hybrid liguid MDI of 27.6 ~ 28.6% and the catalyzer of 7 ~ 9% add reactor by 56 ~ 63%NCO content, under 1.5 ~ 2.0kPa overbottom pressure, stir 20 ~ 30min, discharging is for subsequent use in encloses container, obtains B component.
Further, describedly A, B component are mixed and after being poured into separated time in telecommunications cable jackets, solidifying completely, obtain being implemented as follows of urethane telecommunication cable joint sealant step:
Be 1:1 according to mass ratio, A, B component mixed and after being poured into separated time in telecommunications cable jackets, solidifying 2 ~ 24h completely, obtain urethane telecommunication cable joint sealant.
The invention has the beneficial effects as follows: method provided by the invention, simple operation, control easily, process optimization, formula be reasonable, be easy to industrialization, cost is low, effectively can reduce pore in preparation process, reduces pouring defect; In prepared urethane telecommunication cable joint sealant, add the ultra-fine hollow bead charcoal of Ya Na meter, effectively can improve the mechanical property of joint sealant, and the adjustment to curing speed can be realized.
Embodiment
Be described principle of the present invention and feature below in conjunction with example, example, only for explaining the present invention, is not intended to limit scope of the present invention.
A kind of urethane telecommunication cable joint sealant synthetic method, comprises the steps:
HTPB, reactive thinner, anti-aging agent, the ultra-fine hollow bead charcoal of Ya Na meter are added reactor, dewaters under certain overbottom pressure;
Be down to room temperature and add defoamer, continue to stir under certain overbottom pressure, discharging is for subsequent use in encloses container, obtains component A;
Hybrid liguid MDI and catalyzer are added reactor, stirs under certain overbottom pressure, discharging is for subsequent use in encloses container, obtains B component;
A, B component are mixed and after being poured into separated time in telecommunications cable jackets, solidifying completely, obtain urethane telecommunication cable joint sealant.
Embodiment 1:
According to massfraction ratio, be the HTPB of 1.0mmol/g by 10% hydroxyl value, 18% hydroxyl value is the reactive thinner of 3.0mmol/g, anti-aging agent, the ultra-fine hollow bead charcoal of 5% sub-nanometer of 6% add reactor, be warming up to 100 DEG C, dewater 50min under 1.5kPa overbottom pressure; Be down to room temperature and add the defoamer that massfraction is 4.2%, continue stirring 20min under 1.5kPa overbottom pressure, discharging is for subsequent use in encloses container, obtains component A; According to massfraction, be that the Hybrid liguid MDI of 27.6% and the catalyzer of 7% add reactor by 56%NCO content, under 1.5Pa overbottom pressure, stir 20min, discharging is for subsequent use in encloses container, obtains B component; Be 1:1 according to mass ratio, A, B component mixed and after being poured into separated time in telecommunications cable jackets, solidifying 2h completely, obtain urethane telecommunication cable joint sealant.
Embodiment 2:
According to massfraction ratio, be the HTPB of 1.0mmol/g by 12% hydroxyl value, 20% hydroxyl value is the reactive thinner of 3.0mmol/g, anti-aging agent, the ultra-fine hollow bead charcoal of 8% sub-nanometer of 7% add reactor, be warming up to 105 DEG C, dewater 55min under 1.8kPa overbottom pressure; Be down to room temperature and add the defoamer that massfraction is 4.8%, continue stirring 20 ~ 30min under 1.8kPa overbottom pressure, discharging is for subsequent use in encloses container, obtains component A; According to massfraction, be that the Hybrid liguid MDI of 27.9% and the catalyzer of 8% add reactor by 58%NCO content, under 1.8kPa overbottom pressure, stir 25min, discharging is for subsequent use in encloses container, obtains B component; Be 1:1 according to mass ratio, A, B component mixed and after being poured into separated time in telecommunications cable jackets, solidifying 10h completely, obtain urethane telecommunication cable joint sealant.
Embodiment 3:
According to massfraction ratio, be the HTPB of 1.0mmol/g by 15% hydroxyl value, 22% hydroxyl value is the reactive thinner of 3.0mmol/g, anti-aging agent, the ultra-fine hollow bead charcoal of 10% sub-nanometer of 8% add reactor, be warming up to 110 DEG C, dewater 60min under 2.0kPa overbottom pressure; Be down to room temperature and add the defoamer that massfraction is 5.6%, continue stirring 30min under 2.0kPa overbottom pressure, discharging is for subsequent use in encloses container, obtains component A; According to massfraction, be that the Hybrid liguid MDI of 28.6% and the catalyzer of 9% add reactor by 63%NCO content, under 2.0kPa overbottom pressure, stir 30min, discharging is for subsequent use in encloses container, obtains B component; Be 1:1 according to mass ratio, A, B component mixed and after being poured into separated time in telecommunications cable jackets, solidifying 24h completely, obtain urethane telecommunication cable joint sealant.
The present invention adds the ultra-fine microballon of Ya Na meter, has remarkable lifting, (see table 1) to the mechanical property performance of joint sealant.
Table 1:
Simple operation of the present invention, control easily, process optimization, formula be reasonable, be easy to industrialization, cost is low, and prepared urethane telecommunication cable joint sealant, compared with similar products at home and abroad, performance has significant lifting (see table 2).
Table 2:
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a urethane telecommunication cable joint sealant synthetic method, is characterized in that, comprise the steps:
HTPB, reactive thinner, anti-aging agent, the ultra-fine hollow bead charcoal of Ya Na meter are added reactor, dewaters under certain overbottom pressure;
Be down to room temperature and add defoamer, continue to stir under certain overbottom pressure, discharging is for subsequent use in encloses container, obtains component A;
Hybrid liguid MDI and catalyzer are added reactor, stirs under certain overbottom pressure, discharging is for subsequent use in encloses container, obtains B component;
A, B component are mixed and after being poured into separated time in telecommunications cable jackets, solidifying completely, obtain urethane telecommunication cable joint sealant.
2. urethane telecommunication cable joint sealant synthetic method according to claim 1, is characterized in that, described HTPB, reactive thinner, anti-aging agent, the ultra-fine hollow bead charcoal of Ya Na meter is added reactor, dewaters under certain overbottom pressure.Being implemented as follows of step:
According to massfraction ratio, be the HTPB of 1.0mmol/g by 10 ~ 15% hydroxyl values, 18 ~ 22% hydroxyl values are the reactive thinner of 3.0mmol/g, anti-aging agent, the ultra-fine hollow bead charcoal of 5 ~ 10% sub-nanometer of 6 ~ 8% add reactor, be warming up to 100 ~ 110 DEG C, dewater 50 ~ 60min under 1.5 ~ 2.0kPa overbottom pressure.
3. urethane telecommunication cable joint sealant synthetic method according to claim 1, is characterized in that, described in be down to room temperature and add defoamer, continue to stir under certain overbottom pressure, discharging is for subsequent use in encloses container, obtains being implemented as follows of component A step:
Be down to room temperature and add the defoamer that massfraction is 4.2 ~ 5.6%, continue stirring 20 ~ 30min under 1.5 ~ 2.0kPa overbottom pressure, discharging is for subsequent use in encloses container, obtains component A.
4. urethane telecommunication cable joint sealant synthetic method according to claim 1, it is characterized in that, described Hybrid liguid MDI and catalyzer are added reactor, stir under certain overbottom pressure, discharging is for subsequent use in encloses container, obtains being implemented as follows of B component step:
According to massfraction, be that the Hybrid liguid MDI of 27.6 ~ 28.6% and the catalyzer of 7 ~ 9% add reactor by 56 ~ 63%NCO content, under 1.5 ~ 2.0kPa overbottom pressure, stir 20 ~ 30min, discharging is for subsequent use in encloses container, obtains B component.
5. urethane telecommunication cable joint sealant synthetic method according to claim 1, it is characterized in that, describedly A, B component are mixed and after being poured into separated time in telecommunications cable jackets, solidifying completely, obtain being implemented as follows of urethane telecommunication cable joint sealant step:
Be 1:1 according to mass ratio, A, B component mixed and after being poured into separated time in telecommunications cable jackets, solidifying 2 ~ 24h completely, obtain urethane telecommunication cable joint sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410848421.XA CN104592928A (en) | 2014-12-30 | 2014-12-30 | Synthesis method of polyurethane communication cable pouring sealant |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701002A (en) * | 2016-12-15 | 2017-05-24 | 烟台德邦科技有限公司 | Polyurethane embedding adhesive material with low hardness, low shrinkage and ageing resistance |
| PL423352A1 (en) * | 2017-11-03 | 2019-05-06 | Wojskowy Inst Techniczny Uzbrojenia | Elastic seal |
| CN111258145A (en) * | 2020-03-19 | 2020-06-09 | 深圳市润贝化工有限公司 | Electrochromic glass for aviation and preparation method thereof |
-
2014
- 2014-12-30 CN CN201410848421.XA patent/CN104592928A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701002A (en) * | 2016-12-15 | 2017-05-24 | 烟台德邦科技有限公司 | Polyurethane embedding adhesive material with low hardness, low shrinkage and ageing resistance |
| PL423352A1 (en) * | 2017-11-03 | 2019-05-06 | Wojskowy Inst Techniczny Uzbrojenia | Elastic seal |
| CN111258145A (en) * | 2020-03-19 | 2020-06-09 | 深圳市润贝化工有限公司 | Electrochromic glass for aviation and preparation method thereof |
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Address after: Tianhe District Huang Cun Guangdong province Guangzhou City Daguan road 523000 No. 26 B313 Applicant after: Guangdong High Technology Co., Ltd. Address before: 523000 Guangdong province Dongguan Nancheng District week Xilong Xi Road No. 5, Goldman science and Technology Park of the two fifteenth storey commercial building room 07 Applicant before: Dongguan high magnetic Technology Co., Ltd. |
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Application publication date: 20150506 |