CN103540060A - PVC (polyvinyl chloride) shielding threading pipe material for heating cables - Google Patents
PVC (polyvinyl chloride) shielding threading pipe material for heating cables Download PDFInfo
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- CN103540060A CN103540060A CN201310452581.8A CN201310452581A CN103540060A CN 103540060 A CN103540060 A CN 103540060A CN 201310452581 A CN201310452581 A CN 201310452581A CN 103540060 A CN103540060 A CN 103540060A
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- pvc
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- tube material
- wiring tube
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Abstract
The invention discloses a PVC (polyvinyl chloride) shielding threading pipe material for heating cables, which comprises the following main raw materials: a polyvinyl chloride resin with the particle size of 0.1-0.2mm, dioctyl phthalate, diphenyl phthalate, bromobenzene and a nano inorganic flame retardant. The threading pipe prepared from the material has favorable shielding property, and can substitute a shielding layer of a heating cable, thereby lowering the preparation cost of the heating cable; and the oxygen index of the threading pipe by a combustibility test is greater than 40, and thus, the threading pipe satisies the safe use requirements. Meanwhile, the test proves that the bending resistance, impact resistance, pressure resistance and other mechanical properties of the threading tube prepared from the material satisfy the use requirements.
Description
Technical field
The present invention relates to a kind of penetration pipe, be specifically related to a kind of PVC screened wiring tube material for heating cable.
Background technology
It is warm that heating cable is that enter in recent years China a kind of be take the electricity that heating can generate heat after object, energising, it is electric heating product, heating cable is joined by cold line and hot line, wherein, hot line is comprised of insulation layer, grounding wire, screen layer and oversheath, after heating cable energising, hot line heating, and move between the temperature of 40～60 ℃, be embedded in the heating cable in packing layer, heat energy is passed to heated body by the mode of thermal conduction (convection current) with the far infrared radiation mode of the 7-14um sending.
Heating cable is often used penetration pipe outdoor need during for industrial circle, now fire-retardant the and shielding properties of penetration pipe is had relatively high expectations.Penetration pipe has two types of the fire-retardant and halogen-free flameproofs of halogen by fire-retardant being divided into, and wherein, although have, the fire-retardant addition of halogen is little, flame retardant properties is high, during its burning, can volatilize a large amount of poison gas, causes " secondary disaster ".The matrix of bittern-free flame-proof material is generally metal oxide, organometallics, hydration metal hydroxides etc., and fire retardant is the compound of magnesium hydroxide, aluminium hydroxide, antimonous oxide, molybdenum etc.If fire retardant formula is unreasonable, flame retardant effect is not ideal, if improve flame retardant properties by increasing addition, can improve again the cost and the bending performance that has affected material, the regulation that is difficult to be up to state standards of product.In addition, existing heating cable need arrange independent screen layer, and screen layer is mostly multiple film aluminum foil material, multiple film copper foil material or braiding copper mesh, and this has improved the preparation cost of heating cable undoubtedly.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of PVC screened wiring tube material for heating cable is provided, because the penetration pipe that uses this material to prepare has good function of shielding, thereby the screen layer of alternative heating cable.
Above-mentioned purpose of the present invention is achieved by the following scheme:
A PVC screened wiring tube material for heating cable, described screened wiring tube material is comprised of the raw material of following weight parts:
For further improving flame retardant properties of the present invention and mechanical property, above-mentioned screened wiring tube material is comprised of the raw material of following weight parts:
Above-mentioned nano grade inorganic fire retardant is comprised of nanostructure modified aluminium hydroxide, micron order magnesium hydroxide and the auxiliary flame retardant of following weight parts:
Particle diameter is 40～80 parts of 100～150 nanostructure modified aluminium hydroxides
Particle diameter is 20～40 parts of the magnesium hydroxides of 1～10 micron
5～20 parts of auxiliary flame retardants
Described auxiliary flame retardant is comprised of zinc borate, zinc oxide, ferric oxide, phosphoric acid salt and carbonate.
Above-mentioned complex lead salt stabilizer is comprised of tribasic lead sulfate and dibasic Lead Phosphite.
Compared with prior art, the present invention has following beneficial effect:
Penetration pipe advantages of good shielding performance prepared by the present invention, the screen layer of alternative heating cable, thus having reduced the preparation cost of heating cable, the combustibility test test oxygen index >40 of penetration pipe, meets safe handling requirement.The mechanical index such as the bending resistance of the penetration pipe that meanwhile, after tested prepared by the present invention, shock resistance, anti-pressure ability meet service requirements.
Embodiment
Provide embodiment below so that the present invention is specifically described; be necessary to be pointed out that at this following examples are only used to further illustrate the present invention; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field some nonessential improvement that content is made the present invention according to the present invention and adjustment still belong to protection scope of the present invention.
The component of threading shell material and weight part table look-up in embodiment 1～4:
By the raw material configuration of above-described embodiment than raw material is mixed 4～6 minutes, at 190～200 ℃ by after twin screw extruder granulation, extruding pipe material at 180～190 ℃.
After tested, mechanical property, rigidity, thermotolerance and the ageing resistance of threading sleeve pipe prepared by the present invention are good, and the shield effectiveness of this threading sleeve pipe is good, and combustibility test test oxygen index can reach more than 40.
Claims (4)
1. for a PVC screened wiring tube material for heating cable, it is characterized in that, described screened wiring tube material is comprised of the raw material of following weight parts:
2. a kind of PVC screened wiring tube material for heating cable according to claim 1, is characterized in that, described screened wiring tube material is comprised of the raw material of following weight parts:
3. a kind of PVC screened wiring tube material for heating cable according to claim 1 and 2, is characterized in that: described nano grade inorganic fire retardant is comprised of nanostructure modified aluminium hydroxide, micron order magnesium hydroxide and the auxiliary flame retardant of following weight parts:
Particle diameter is 40～80 parts of 100～150 nanostructure modified aluminium hydroxides
Particle diameter is 20～40 parts of the magnesium hydroxides of 1～10 micron
5～20 parts of auxiliary flame retardants
Described auxiliary flame retardant is comprised of zinc borate, zinc oxide, ferric oxide, phosphoric acid salt and carbonate.
4. a kind of PVC screened wiring tube material for heating cable according to claim 1 and 2, is characterized in that: described complex lead salt stabilizer is comprised of tribasic lead sulfate and dibasic Lead Phosphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310452581.8A CN103540060A (en) | 2013-09-27 | 2013-09-27 | PVC (polyvinyl chloride) shielding threading pipe material for heating cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310452581.8A CN103540060A (en) | 2013-09-27 | 2013-09-27 | PVC (polyvinyl chloride) shielding threading pipe material for heating cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103540060A true CN103540060A (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310452581.8A Pending CN103540060A (en) | 2013-09-27 | 2013-09-27 | PVC (polyvinyl chloride) shielding threading pipe material for heating cables |
Country Status (1)
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| CN (1) | CN103540060A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064275A (en) * | 2014-07-09 | 2014-09-24 | 常熟市谷雷特机械产品设计有限公司 | High voltage transmission cable |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397389A (en) * | 2008-10-16 | 2009-04-01 | 韩燕� | Method for manufacturing PVC flame-retardant and screening cable pipes |
| CN102504447A (en) * | 2011-12-09 | 2012-06-20 | 重庆鸽牌电工材料有限公司 | Low-smoke low-halogen flame-retardant threading pipe material and manufacture method |
| CN102875932A (en) * | 2012-10-18 | 2013-01-16 | 合肥安诺新型建材有限公司 | PVC (polyvinyl chloride) power pipeline material and preparation method thereof |
-
2013
- 2013-09-27 CN CN201310452581.8A patent/CN103540060A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397389A (en) * | 2008-10-16 | 2009-04-01 | 韩燕� | Method for manufacturing PVC flame-retardant and screening cable pipes |
| CN102504447A (en) * | 2011-12-09 | 2012-06-20 | 重庆鸽牌电工材料有限公司 | Low-smoke low-halogen flame-retardant threading pipe material and manufacture method |
| CN102875932A (en) * | 2012-10-18 | 2013-01-16 | 合肥安诺新型建材有限公司 | PVC (polyvinyl chloride) power pipeline material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064275A (en) * | 2014-07-09 | 2014-09-24 | 常熟市谷雷特机械产品设计有限公司 | High voltage transmission cable |
| CN104064275B (en) * | 2014-07-09 | 2016-08-31 | 国网山东省电力公司菏泽供电公司 | A kind of high-voltage transmission cable |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140129 |