Electric wire is with 70 ℃ of insulation-grade environment-friendly type soft pvc plastics
Technical field
The present invention relates to the insulation-grade soft pvc plastics that a kind of cable is used, particularly electric wire is with 70 ℃ of insulation-grade environment-friendly type soft pvc plastics.
Background technology
In the insulation and sheath material of electric wire, PVC is more cheap, and mechanical property is good, and is easy to process, so that it becomes the maximum material of wires and cables industry usage quantity for a long time.Since 20 end of the centurys, the environmental problem of PVC material extensively is familiar with, and some developed countries have proposed restriction or completely forbidden the decree suggestion of using the PVC cable.Have data to show, the Western European countries are at the consumption of cable field PVC, and 1994 is 441kt, the line is busy 58% of the used resin of cable, and 2000, PVC is 398kt at the total consumption of West Europe cable industry, the line is busy 48% of the used resin of cable, total amount and proportion are all on a declining curve.In recent years, control and ban use of the PVC material to form strong trend.
Although replace the cry of PVC material with the Halogen material more and more higher, but PVC itself has the advantage that also can't replace in a short time (as cheap, good flame resistance, processing units, technique are simple, the hardness variable range is wide, electrical insulating property is good, oil resistant, chemical-resistant reagent etc.), so the use of short-term internal world scope total ban PVC and unrealistic.
In China, PVC CABLE MATERIALS development early, kind, model are more.In the recent period, because the raising that Environmental Protection in China requires, the development of China PVC CABLE MATERIALS is also on a declining curve gradually.But because the PVC CABLE MATERIALS is cheap, the in addition multiple advantage such as mechanical property excellence is so that China PVC CABLE MATERIALS still has certain development prospect in the recent period.At present, although also can not eliminate the PVC electric wire abroad at once, this must cause the great attention of domestic wires and cables industry, domesticly should pay attention to studying non-leaded PVC or the not halogen-containing environment-friendly type electric wire of development of new.Although the environment-friendly type electric wire replaces the PVC cable also to want considerable time at home on a large scale, this is trend of the times.More domestic high-grade projects have proposed requirement to this.
The patent disclosure of publication number CN101377967A " a kind of novel environment protection PVC cable sheath material " a kind of environment protection PVC cable sheath material that uses common calcium zinc stabilizer, its volume specific resistance requires low, reduces although realized the environmental protection insulating property; The patent disclosure of publication number CN101230171A " high electric-property high temperature resistant wearable environment protection plastic insulating material " use the insulating material of common calcium zinc stabilizer, high temperature plasticization agent and water-ground limestone, but use its volume specific resistance of common calcium zinc stabilizer do not reach requirement yet, use its cost of high temperature plasticization agent high, use water-ground limestone its than great.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned prior art, the electric wire that the performance requriements of J-70 type among a kind of environmental requirement that can satisfy the ROHS standard and " soft PVC plastic for electric wire and cable " standard GB/T-2008 is provided is with 70 ℃ of insulation-grade environment-friendly type soft pvc plastics.
The technical scheme that realizes the object of the invention is: a kind of electric wire 70C insulation-grade environment-friendly type soft pvc plastics, and the composition of described soft pvc plastics and proportioning are (mass parts meter):
100 parts of polyvinyl chloride resins;
6~10 parts of calcium-zinc composite stabilizing agents;
55~65 parts in softening agent;
40~55 parts of weighting agents;
1.5~3 parts of lubricants;
0.5~1.5 part of processing aid.
Above-mentioned electric wire is with 70 ℃ of insulation-grade environment-friendly type soft pvc plastics, and described calcium-zinc composite stabilizing agent is the calcium zinc stabilizer of high electrical performance.
Above-mentioned electric wire is height insulation and the high Congo red type DA-970 that Shenzhen Xing Yonghui plastic material company limited produces with 70 ℃ of insulation-grade environment-friendly type soft pvc plastics, described calcium-zinc composite stabilizing agent.
Above-mentioned electric wire is with 70 ℃ of insulation-grade environment-friendly type soft pvc plastics, and described polyvinyl chloride resin is the universal polyvinyl chloride resin of suspension method.
Above-mentioned electric wire is with 70 ℃ of insulation-grade environment-friendly type soft pvc plastics, described softening agent is the mixture of dioctyl terephthalate, epoxy soybean oil, o-phthalic acid dibutyl ester and 52 degree clorafins, in the total component of prescription, dioctyl terephthalate is that 20~25 mass parts, epoxy soybean oil are that 10~12 mass parts, o-phthalic acid dibutyl ester are that 9~15 mass parts, 52 degree clorafins are 10~20 mass parts.
Above-mentioned electric wire is with 70 ℃ of insulation-grade environment-friendly type soft pvc plastics, and described weighting agent is the mixture of calcinated argil and calcium carbonate, and in the total component of prescription, calcinated argil is that 10~25 mass parts, calcium carbonate are 20~40 mass parts.
Above-mentioned electric wire is with 70 ℃ of insulation-grade environment-friendly type soft pvc plastics, described lubricant is the mixture of barium stearate, stearic acid and paraffin, in the total component of prescription, barium stearate is that 1~1.5 mass parts, stearic acid are that 0~1 mass parts, paraffin are 0~1 mass parts.
Above-mentioned electric wire is with 70 ℃ of insulation-grade environment-friendly type soft pvc plastics, and described processing aid is ACR401.
Above-mentioned electric wire is with 70 ℃ of insulation-grade environment-friendly type soft pvc plastics, and the composition of described soft pvc plastics and proportioning are (mass parts meter):
100 parts of polyvinyl chloride resins;
7.5 parts of calcium-zinc composite stabilizing agents;
60 parts in softening agent;
42 parts of weighting agents;
2.5 parts of lubricants;
1 part of processing aid.
DA-970 is calcium-zinc composite stabilizing agent, and photo and thermal stability is good, and anti-sulfide staining is better with the collaborative result of use of other nontoxic auxiliary agent.Can be used for producing country's CABLE MATERIALS or the comparatively harsh PVC goods of other requirement, particularly require high insulation and high Congo red goods.The volume specific resistance of the PVC material of common calcium zinc stabilizer is 10
10To 10
11Ω .m does not reach 10
12Ω .m; And the calcium zinc stabilizer of the high electrical performance that this patent adopts, the volume specific resistance of its PVC material reaches 10 easily
12Ω .m.
Technical characteristic:
Outward appearance: white powder
Metal content: 〉=16%
First fusing point: 〉=95 ℃
Weight loss on heating:<1%
After having adopted technique scheme, the present invention has following beneficial effect: (1) the present invention adopts high electrical performance and high Congo red type calcium-zinc composite stabilizing agent DA-970 to improve volume specific resistance and the Congo red heat-stable time of soft pvc plastics; (2) soft pvc plastics of the present invention meet the environmental requirement of ROHS standard; (3) soft pvc plastics performance of the present invention satisfies the index request of J-70 type among standard " soft PVC plastic for electric wire and cable " GB/T-2008.
Embodiment
(embodiment 1)
The composition of the soft pvc plastics of present embodiment, proportioning umber and model see Table one:
Table one
In the present embodiment:
The performance of pellet compressing tablet:
(embodiment 2)
The composition of the soft pvc plastics of present embodiment, proportioning umber and model see Table two:
Table two
In the present embodiment:
The performance of pellet compressing tablet:
(embodiment 3)
The composition of the soft pvc plastics of present embodiment, proportioning umber and model see Table three:
Table three
In the present embodiment:
The performance of pellet compressing tablet:
(embodiment 4)
The composition of the soft pvc plastics of present embodiment, proportioning umber and model see Table four:
Table four
In the present embodiment:
The performance of pellet compressing tablet:
(embodiment 5)
The composition of the soft pvc plastics of present embodiment, proportioning umber and model see Table five:
Table five
In the present embodiment:
The performance of pellet compressing tablet:
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.