CN1188777A - Fire-resistant antistatic modified plastic - Google Patents

Abstract

A modified plastics with flame-retarding and antistatic function uses such components as raw materials as polyvinyl chloride (its K value=100), isooctyl dithioacetate bi-n-octyl tin, calcium stearate, stearic acid, lubricant C7-C4, Sb2O3 or Sb2O5, epoxy bean oil, conducting carbon black, and copolymer of methyl methacrylate, butadiene and styrene, and features flame-retarding and antistatic nature, and high strength and toughness. It is suitable to make plugger of explosive in underground pore for mine, supporting roller of conveying belt, and pipes.

Description

A kind of fire-resistant antistatic modified plastic

The present invention relates to a kind of fire-retardant, antistatic modified plastics that have, be applicable to the sealer of making down-hole, mine blast-hole explosives, rotary conveyor carrying roller, pipe etc.

The embrasure plugging of drilling and blasting in the down-hole, mine, traditional method is remaining space beyond the powder stick or passage tight blocking up fully with yellow mud, to guarantee the stability of explosive, improve explosive power, but will just transporting to the down-hole through a plurality of links, the yellow mud that this method needs to use the place, not only consumption is big for it, labour intensity is big, and need to preserve in the down-hole, be the dry ground shape local preservation of exsiccant again, and from working face in nearer place, mine for no loess, spend strength to purchase again, promptly destroy land resources from the other places, very inconvenient again, adopt yellow mud because misoperation is violating the regulations, cause security incident to take place, and the carrying roller that rotary conveyor uses at present all is the iron material making, though it has the flame-retardant and anti-static effect, it contacts with the belt that the rafter moulding material is made to use under coal mine and easily produces spark, cause disaster hidden-trouble, simultaneously not wear-resisting, not anticorrosion, intensity is low.

Purpose of the present invention is the shortcoming and deficiency in order to overcome above-mentioned prior art just, and provide a kind of non-metallic material to have the modified plastics of flame-retardant and anti-static function, can make sealer, rotary conveyor carrying roller, pipe of down-hole, mine blast-hole explosives etc., can replace yellow mud plugged perforation explosive, the carrying roller made from iron material, pipe etc. guarantee Mine Safety in Production.

The objective of the invention is to realize by following scheme:

A kind of fire-resistant antistatic modified plastic is characterized in that it adopts the raw material of following component and by following proportioning (by weight):

100 parts of polyvinyl chloride (k value 100), disulfide group 2-ethyl hexyl ethanoate dioctyltin 1-3 part, calcium stearate 0.1-0.3 part, hard fat acid 0.3-0.8 part, lubricant G-74 0.01-0.02 part, antimonous oxide or antimony peroxide 5-8 part, epoxidized soybean oil 3-5 part, graphitized carbon black 5-10 part, methyl methacrylate and divinyl and styrol copolymer 5-8 part.

Raw material of the present invention is the industrial Chemicals of market sale.The different monooctyl ester dioctyltin of two thin guanidine-acetic acid that adds in polyvinyl chloride (the K value 100) raw material is a kind of compound of organotin, it has function of stabilizer, prevent plastic degradation, anti-aging, gain in strength, improve thermostability, product, the trade mark produced by Beijing Chemical Factory No. 3 are capital tin 8831 organotins.Antimonous oxide or antimony peroxide are a kind of fire retardants, it can improve the flame retardant of plastic performance, through measuring, with the spirit lamp flameless combustion time be 1-3 second, the alcohol blast burner flameless combustion time is 1-8 second, meets country fully about using the standard of performance of on-metallic article under the coal mine, and adopting graphitized carbon black is a kind of static inhibitor, require carbon content at the Industrial products more than 90%, through measuring, its conductivity: make electric shape body, its upper surface surface resistivity is＜3.0 * 10 ⁸Ω, the lower surface surface resistivity is＜3.0 * 10 ⁸Ω meets country's mark property.Methymethacrylate and divinyl and cinnamic multipolymer, its product grade is toughener M-BS, it is a kind of anti-impact modifier, can improve the plastics strength and toughness, be internal lubricant, and G-74 is a lubricant, stearic acid is the stablizer lubricant of holding concurrently, produced by Shijiazhuang City, Hebei Province chemical industry nine factories, calcium stearate is the non-toxic stabilizer lubricant of holding concurrently, and epoxidized soybean oil is softening agent and stablizer.

Supervision detects plastics of the present invention through national departments concerned, and its test result is shown in table 1, table 2.

With lamellar body test one, the burning performance test of the thick 1.2mm of 500 * 500mm, test result sees Table 1

Table with test results 1

Testing tool	Spirit lamp					Alcohol blast burner
										Sample type	The sample sequence number	The flaming combustion time (s)	The flameless combustion time (s)	Extension length (mm)	Whether qualified	The flaming combustion time (s)	The flameless combustion time (s)	Extension length (mm)	Whether qualified
The end immersion	????1	??1.18	??1.26	Less than 280	Qualified	1.32	?2.45	Less than 280	Qualified
										????2	??0.89	??1.38	Qualified	2.68	?4.22	Qualified
	????3	??1.42	??1.40		Qualified	3.78	?7.11		Qualified
										????4	??1.47	??1.55	Qualified	5.62	?4.32	Qualified
	????5	??2.70	??2.17		Qualified	2.04	?2.35		Qualified
										????6	??1.68	??2.66	Qualified	1.10	?3.56	Qualified
	Immersion	????1	All do not burn				All do not burn
????2
		????3
????4
		????5
????6

Two, the conductivity test determination the results are shown in Table 2

Table with test results 2

Testing laboratory's temperature	??????????????25℃		Testing laboratory's temperature	???????????70％
						Sequence number resistance	?????1	?????2	????3	On average	Whether qualified
Upper surface surface resistivity (Ω)	???1.8×10 8	??1.3×10 8	??1.5×10 8	??＜3.0×10 8	Qualified
						Lower surface surface resistivity (Ω)	???1.5×10 8	??1.4×10 8	???1.3×10 8	??＜3.0×10 8	Qualified

The result shows: combustion time, the spirit lamp non-flaming combustion time of not soaking is 1-3 second, and the alcohol blast burner non-flaming combustion time is 1-8 second, and immersion is not all burnt.

Conductive resistance: upper surface surface resistivity＜3.0 * 10 ⁸Ω, lower surface surface resistivity＜3.0 * 10 ⁸The above test result of Ω all meets national standard, belongs to qualified product.

Compared with the prior art technology of the present invention has following advantage and effect:

A) the product good flame retardation effect made from modified plastics of the present invention resists and earns good electrical property, has the intensity height simultaneously, good toughness.Be used to make the device of blocking up that the explosive perforation diameter is 40-50mm, the similar shuttlecock shape that cuts off feather, at mobile pulling force inside and outside the borehole about 7 kilograms, simultaneously can improve blasting effect, blast hole utilization factor reduces labor intensity more than 90%, and volume is little easy to carry, stifled simultaneously eye contractility is big, closely cooperates by self tension force and borehole perisporium;

B) raw material is easy to get, scientific formulation, and cost is low;

C) can be used for the goods such as explosive borehole sealer, belt roller, pipe of coal mine operation, also can be used for other mine and use.

Embodiment 1

Get polyvinyl chloride (k value 100) 100kg, disulfide group 2-ethyl hexyl ethanoate dioctyltin 1kg, calcium stearate 0.3kg, stearic acid 0.3kg, toughener M-BS 8kg, lubricant G-74 0.02kg, antimonous oxide 5kg, epoxidized soybean oil 3kg, graphitized carbon black 10kg.With making sample after the above-mentioned raw materials mixing, measure flame retardant properties, immersion, the spirit lamp non-flaming combustion time is 1.26 seconds, 2.45 seconds alcohol blast burner non-flaming combustion time, conductive resistance: upper surface surface resistivity 1.8 * 10 ⁸Ω, lower surface surface resistivity 1.5 * 10 ⁸Ω is qualified product.

Embodiment 2

Get polyvinyl chloride (k value 100) 100kg, disulfide group 2-ethyl hexyl ethanoate dioctyltin 2kg calcium stearate 0.2kg, stearic acid 0.5kg, toughener M-BS 8kg, lubricant G-74 0.015kg, antimonous oxide 7kg, epoxidized soybean oil 4kg, graphitized carbon black 7kg.With making sample after the above-mentioned raw materials mixing, measure fire-retardant burning performance, the spirit lamp non-flaming combustion time of not soaking is 2.17 seconds, the alcohol blast burner non-flaming combustion time is 2.35 seconds mensuration conductive resistances, upper surface surface resistivity 1.3 * 10 ⁸Ω, lower surface surface resistivity 1.4 * 10 ⁸Ω belongs to qualified product.

Embodiment 3

Get polyvinyl chloride (k value 100) 100kg, disulfide group 2-ethyl hexyl ethanoate dioctyltin 3kg, calcium stearate 0.1kg, stearic acid 0.8kg, toughener M-BS 5kg, lubricant G-740.01kg, antimony peroxide 8kg, epoxidized soybean oil 5kg, graphitized carbon black 5kg, above-mentioned raw materials is made sample after mixing, measure flame retardant properties, not immersion, 6.44 seconds alcohol blast burner non-flaming combustion time, 3.78 seconds alcohol blast burner non-flaming combustion time.

Measure the conduction resistance, upper surface surface resistivity 1.5 * 10 ⁸Ω, lower surface surface resistivity 1.3 * 10 ⁸Ω belongs to qualified product.

Claims (1)

1, a kind of fire-resistant antistatic modified plastic.It is characterized in that it adopts the raw material of following component and by following proportioning (by weight):

100 parts of polyvinyl chloride (k value 100), disulfide group 2-ethyl hexyl ethanoate dioctyltin 1-3 part, calcium stearate 0.1-0.3 part, hard fat acid 0.3-0.8 part, lubricant G-74 0.01-0.02 part, antimonous oxide or antimony peroxide 5-8 part, epoxidized soybean oil 3-5 part, graphitized carbon black 5-10 part, methyl methacrylate and divinyl and styrol copolymer 5-8 part.