CN102863925A - Sealant for communication optical cable joint box - Google Patents

Abstract

The invention discloses a sealant for a communication optical cable joint box. The sealant is prepared from the following materials in percentage by weight: 45-55 percent of butyl adhesive, 0-3 percent of zinc oxide, 5-26 percent of carbon black, 5-21 percent of calcium carbonate, 10-15 percent of engine oil, 0-5 percent of beef fat and 1-6 percent of imidacloprid, wherein the sum of the weight percent of all the materials is equal to 100 percent. The sealant prepared by the invention has good sealing performance, is convenient to use and is nontoxic and harmful to a human body and environment through European Union ROHS6 item heavy metal detection.

Description

A kind of communications optical cable connector box seal gum

Technical field

The present invention relates to a kind of communications optical cable connector box seal gum.

Background technology

In today of Fibre Optical Communication Technology high speed development, the cable splice closure seal gum also reaches certain height to the requirement of sealing property, most of seal gum of at present domestic production does not all satisfy the index of connector box industry standard on sealing property, be badly in need of in the industry a kind of novel seal gum and make the cable splice closure optical cable reach the effect of industry standard in the middle sealing property that continues.

Summary of the invention

The purpose of this invention is to provide a kind of Novel Communication cable splice closure seal gum, solve existing seal gum in the technical deficiency of stopping property, a kind of seal gum that can satisfy sealing property between cable splice closure and the cable jacket is provided.

In order to reach above-mentioned purpose, solution of the present invention is:

A kind of communications optical cable connector box seal gum, formulated by weight percentage by following material:

Butyl rubber 45%～55%;

Zinc oxide 0%～3%;

Carbon black 5%～26%;

Calcium carbonate 5%～21%;

Machine oil 10%～15%;

Butter 0%～5%;

Give a tongue-lashing worm quinoline 1%～6%;

Above each material weight per-cent sum equals 100%.

After adopting such scheme, the sealant sealing performance that the present invention makes is good, easy to use, detects human body and environment toxicological harmless through the ROHS6 of European Union item heavy metal.

Embodiment

The technology of the present invention requires:

Tensile strength	σ 〉=250kpa
		Elongation at break	ε 〉=300%
Hardness	6≤HA≤10
		Volume specific resistance	ρ 〉=1 * 10 12Ω cm
Dielectric strength	E 〉=2KV/mm
		Autohension	Zai ?in 40 ℃～+ 60 ℃ scopes, apply the pressure of 20N/cm 2 between two samples of same material after, can not peel off along adhesive face.
Acid-and base-resisting, salt	Can bear the immersion of 5%HCl, NaOH, NaCl solution, without weightless, corrode without swelling, nothing behind the immersion 24h.

Butyl rubber is that its advantage is by iso-butylene and the synthetic multipolymer of isoprene: resistance to air loss is good, heat-resisting, ageing-resistant, corrosion-resistant, electrical insulation capability is good, be difficult for sulfuration.

Seal gum of the present invention also can be adjusted in above-mentioned formula rate flexibly, can make several seal gums, and its physical property is substantially constant.Below illustrate with two examples:

Embodiment 1:Adopt the preparation communications optical cable connector box seal gum of following ratio:

Butyl rubber 55%;

Zinc oxide 3%;

Carbon black 21%;

Calcium carbonate 10%;

Machine oil 10%;

Give a tongue-lashing worm quinoline 1%.

Has hardness with the seal gum of aforementioned proportion refining high, good toughness, the characteristics that viscosity is strong.The level that is in a leading position in the seal gum technology of the same trade at home, it has following advantage:

1. convenient encapsulation: this seal gum adopts mechanical seal, twines glue convenient when sealing cable splice closure and cable jacket, and encapsulation rationally can protect the safety of cable connection point, again can be convenient and swift aspect safeguarding.

2. physical property: this seal gum has good toughness and viscosity, and its physics, stable chemical performance can be compatible with cable splice closure and all cable materials that may touch.

3. use range is wide, can use in-40 ℃～65 ℃ temperature ranges, does not affect the performance of seal gum.

4. stopping property: this seal gum press the schedule of operation encapsulation cable splice closure of rower regulation complete after, in box body, be filled with 60kpa air pressure, put into constant temperature machine through 15 circulations of high low temperature (40 ℃ of 65 ℃ of low temperature ﹣ of high temperature) test above (the cable splice closure industry standard is 10 circulations namely 80 hours), observe 15min in the immersion clear water and overflow without bubble, recording at normal temperatures air pressure is that 60kpa is air tight.Other environmental performance and measuring mechanical property in also all meet and exceed the index of connector box industry standard.

5. termite-proof property: the special trace that adds is given a tongue-lashing the worm quinoline in this seal gum composition, can effectively prevent biting of white ant when buried, effectively prevents under non-natural disaster the destruction to the cable splice closure box body.

Embodiment 2:Adopt the preparation communications optical cable connector box seal gum of following ratio:

Butyl rubber 50%;

Zinc oxide 3%;

Carbon black 11%;

Calcium carbonate 20%;

Machine oil 10%;

Butter 5%;

Give a tongue-lashing worm quinoline 1%.

Reduced the ratio of carbon black in the aforementioned proportion, increased the ratio of calcium carbonate, and added butter, the seal gum of refining has reduced hardness and toughness like this, improves the viscosity of seal gum, has strengthened simultaneously the tensile strength of seal gum, and its advantage is as follows:

1. convenient encapsulation: this seal gum adopts mechanical seal, twines glue convenient when sealing cable splice closure and cable jacket, and encapsulation rationally; can protect the safety of cable connection point; again can be convenient and swift aspect safeguarding, when repeating to open, pull out glue easy, again simple and fast during the housed joint box.

2. physical property: this seal gum has good toughness and viscosity, and its physics, stable chemical performance can be compatible with cable splice closure and all cable materials that may touch.

3. use range is wide, can use in-40 ℃～65 ℃ temperature ranges, does not affect the performance of seal gum.

4. stopping property: this seal gum press the schedule of operation encapsulation cable splice closure of rower regulation complete after, in box body, be filled with 60kpa air pressure, put into constant temperature machine through 15 circulations of high low temperature (40 ℃ of 65 ℃ of low temperature ﹣ of high temperature) test above (the cable splice closure industry standard is 10 circulations namely 80 hours), observe 15min in the immersion clear water and overflow without bubble, recording at normal temperatures air pressure is that 60kpa is air tight.Other environmental performance and measuring mechanical property in also all meet and exceed the index of connector box industry standard.

5. termite-proof property: the special trace that adds is given a tongue-lashing the worm quinoline in this seal gum composition, can effectively prevent biting of white ant when buried, effectively prevents under non-natural disaster the destruction to the cable splice closure box body.

In a word; product of the present invention has very strong plasticity-; can make the joint strip of different shape; the optical cable for communication connector box that can be applicable to various models needs the product of good seal performance with some other; allly utilize this design that this seal gum is carried out the change of unsubstantiality, all should belong to the behavior of invading this Novel seal gum protection domain.

Claims (1)

1. communications optical cable connector box seal gum is characterized in that: formulated by weight percentage by following material:

Butyl rubber 45%～55%;

Zinc oxide 0%～3%;

Carbon black 5%～26%;

Calcium carbonate 5%～21%;

Machine oil 10%～15%;

Butter 0%～5%;

Give a tongue-lashing worm quinoline 1%～6%;

Above each material weight per-cent sum equals 100%.