Background technology
Polyvinyl chloride cable material is taking polyvinyl chloride as base resin, add stablizer, dioctyl phthalate (DOP), Di Iso Decyl Phthalate, the inorganic fillers such as the softening agent such as dioctyl terephthalate, trioctyl trimellitate and calcium carbonate, the additive such as auxiliary agent and lubricant, mediates the particle of extruding and prepare through mixture.
Conventional P VC wire cable material is because having become the important factor of restriction electric wire in applications such as electric installation, Infrastructure, fundamental construction containing objectionable impuritiess such as a certain amount of heavy metal elements.For reducing exploitation that threat to social environment and pollution realize the Sustainable development environment-friendly PVC CABLE MATERIALS of enterprise, to protect mankind health maintenance ecotope becomes the theme of current cable material exploitation.
Enter 21 century, along with the raising of mankind's environmental consciousness and the people concern to self health, environmental problem becomes the focus that human society is paid close attention to, and the use of objectionable impurities is limited in many countries, area and organize and formulated one after another strict standard and regulation.Particularly European Union specifies that the product that later enters European Union member countries on July 1st, 2006 must meet environmental protection ROHS regulation, otherwise product cannot enter European Union member countries at all.Tradition material, because of containing objectionable impuritiess such as a certain amount of heavy metal elements, has become the important factor of restriction in applications such as electric installation, Infrastructure, fundamental construction.For to protect mankind health, safeguard ecotope, reduce threat and pollution to social environment, realize Sustainable development, the exploitation of environment-friendly cable material has become the theme of current cable material exploitation.
And, polyvinyl chloride cable material of the prior art, flame retardant effect is unsatisfactory.
Summary of the invention
For above shortcomings in prior art, technical problem to be solved by this invention is to provide a kind of fire retardant insulating grade polyvinyl chloride CABLE MATERIALS.
Technical problem to be solved by this invention is achieved by the following technical solution:
A kind of fire retardant insulating grade polyvinyl chloride CABLE MATERIALS, comprise following weight parts raw material: 100 parts of polyvinyl chloride resins, PETO 20-30 part, trioctyl trimellitate 5-15 part, clorafin 2-10 part, calcium stearate 2-6 part, Zinic stearas 2-6 part, lubricant 1-3 part, oxidation inhibitor 0.2-0.8 part, calcium carbonate 3-9 part, antimonous oxide 3-7 part.
The preferred PVC-SG3 resin of polyvinyl chloride resin.
The Main Function of softening agent is melt temperature and the melt viscosity that reduces polymkeric substance, and then reduces the processing temperature of polymkeric substance; Give polymer product with flexibility and resistance to low temperature.In the present invention, select PETO, clorafin and the composite plasticizer combinations of trioctyl trimellitate, its comprehensive plasticizing efficiency is high, volatility is very little, transport property is little.
PETO, English name: Pentaerythritol Oleate, is called for short PETO, No. CAS: 19321-40-5.Clorafin, No. CAS: 63449-39-8.Trioctyl trimellitate, No. CAS: 3319-33-1.
The present invention is as the formulating of recipe of environment protection PVC insulation material; its stablizer should be containing the heavy metal element such as plumbous Pb, cadmium Cd, mercury Hg, sexavalent chrome Cr6 that human body is had to harm; the present invention selects calcium stearate and its thermostability of Zinic stearas one package stabilizer to approach or exceedes some barium/cadmium stabilizer, Pb stabilizer and can substitute poisonous stablizer, and good weatherability is nontoxic has the good transparency is of value to HUMAN HEALTH and environment protection.
Adding of weighting agent calcium carbonate, is mainly the consumption that reduces product cost minimizing resin, can also improve the electrical property of plastics simultaneously.
Lubricant, preferably polyethylene wax.
Adding of oxidation inhibitor, can effectively suppress ageing of plastics, in the present invention, can select the oxidation inhibitor that the industry is general, as antioxidant 1010, antioxidant 1076, irgasfos 168, DSTDP, DLTDP, BHT, CA oxidation inhibitor etc.
Antimonous oxide, a kind of effectively fire-retardant for plastic.
Preferably, a kind of fire retardant insulating grade polyvinyl chloride CABLE MATERIALS, also comprises following weight parts raw material: anti-termite agent 1-3 part.
Described anti-termite agent is a kind of or its mixture in Avrmectin, Asarinin and Dihydrocapsaicin.
Preferably, described anti-termite agent, is made up of by weight following component: Avrmectin 70-90 part, Asarinin 5-15 part and Dihydrocapsaicin 5-15 part.
Avrmectin, No. CAS: 71751-41-2; Asarinin, No. CAS: 133-05-1; Dihydrocapsaicin, No. CAS: 19408-84-5.
Fire retardant insulating grade polyvinyl chloride CABLE MATERIALS of the present invention, can adopt this area universal method to be prepared from, for example adopt following preparation technology: each starting material are mixed to 6-10min on mixing machine, be to plastify granulation on two rank screw extrusion press of 130-160 DEG C at extrusion temperature, can make fire retardant insulating grade polyvinyl chloride CABLE MATERIALS of the present invention.
Fire retardant insulating grade polyvinyl chloride CABLE MATERIALS of the present invention, fire-retardant and insulating property are better, and there is good moulding processability.
Embodiment
Embodiment 1-5
Take each raw material according to corresponding embodiment 1-5 data in table 1.Each starting material are mixed to 8min on high-speed mixer, are to plastify granulation on two rank screw extrusion press of 150 DEG C at extrusion temperature, can make fire retardant insulating grade polyvinyl chloride CABLE MATERIALS of the present invention.
Again this fire retardant insulating grade polyvinyl chloride CABLE MATERIALS mold pressing 15min on 170 DEG C of presses is made to test piece, for experiment.
Table 1: fire retardant insulating grade polyvinyl chloride CABLE MATERIALS formula table unit: kilogram
Embodiment 1 |
Embodiment 2 |
Embodiment 3 |
Embodiment 4 |
Embodiment 5 |
PVC-SG3 resin 100 |
100 |
100 |
100 |
100 |
PETO 25 |
25 |
25 |
25 |
25 |
Trioctyl trimellitate 10 |
10 |
10 |
10 |
10 |
Clorafin 6 |
6 |
6 |
6 |
6 |
Calcium stearate 4 |
4 |
4 |
4 |
4 |
Zinic stearas 4 |
4 |
4 |
4 |
4 |
Polyethylene wax 2 |
2 |
2 |
2 |
2 |
Antioxidant 1010 0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
Calcium carbonate 6 |
6 |
6 |
6 |
6 |
Antimonous oxide 5 |
5 |
5 |
5 |
5 |
Avrmectin/ |
1.6 |
1.6 |
1.6 |
/ |
Asarinin |
/ |
0.2 |
0.4 |
/ |
1 |
Dihydrocapsaicin |
/ |
0.2 |
/ |
0.4 |
1 |
Test case 1
Table 2: CABLE MATERIALS performance test table
Test event |
Embodiment 1 |
Embodiment 2 |
Blank example |
Oxygen index, % |
36.2 |
36.0 |
33.5 |
200 DEG C of heat-stable times, min |
188 |
185 |
125 |
Blank example and embodiment 1 fill a prescription basic identical, and difference is only: blank example is not added fire retardant antimonous oxide.
Test case 2:
Adopt GB/T2951.38-1986 electric wire termite test method, knock down method test.Test piece: 50mm × 50mm × 1mm.
Table 3: anti-ant performance test table
? |
Termite is knocked down time KT50, min |
Embodiment 1 |
Termite is without knocking down, invalid |
Embodiment 2 |
123 |
Embodiment 3 |
155 |
Embodiment 4 |
137 |
Embodiment 5 |
424 |
Avrmectin has stronger toxic action to termite; Asarinin and Dihydrocapsaicin belong to biological anti-termite agent, and the toxicity of raw material own is less, but anti-ant effect is all obviously poor than Avrmectin.The present invention is after Avrmectin, Asarinin and three kinds of composite uses of anti-termite agent of Dihydrocapsaicin, synergy, and the termite time of knocking down obviously reduces, and anti-ant performance is good.