CN103694603A

CN103694603A - Flame retardant composition in PVC (polyvinyl chloride) cable material

Info

Publication number: CN103694603A
Application number: CN201310700420.6A
Authority: CN
Inventors: 李根贵; 沈劲松
Original assignee: JIANGSU SHUANGBAO TECHNOLOGY Co Ltd
Current assignee: JIANGSU SHUANGBAO TECHNOLOGY Co Ltd
Priority date: 2013-12-19
Filing date: 2013-12-19
Publication date: 2014-04-02

Abstract

The invention relates to a flame retardant composition in a PVC (polyvinyl chloride) cable material. One dose of the original antimony trioxide flame retardant is prepared from equal amounts of antimony trioxide and sodium antimonide (1:1), i.e. prepared from 0.5 part of antimony trioxide and 0.5 part of sodium antimonide. A preparation method comprises the following processing steps: 1) respectively stirring antimony trioxide and sodium antimonide with plasticizer according to a weight ratio of 1:1, and milling; and 2) weighing and adding: weighing the milled flame retardant according to a antimony trioxide/sodium antimonide ratio of 1:1, mixing, and adding into a high-speed stirrer, wherein the time for respectively milling the antimony trioxide and the sodium antimonide with the plasticizer on a double-roller machine is 5 minutes. According to the invention, the flame-retardant effect of one dose of flame retardant exceeds that of two doses of antimony trioxide, and the oxygen index of a PVC wire/cable material can be increased. The sodium antimonide material is wide in resources and 1/5 of the antimony trioxide in price; and while the purpose of flame-retardant modification is achieved, the mechanical property and flame retardancy of the material are enhanced.

Description

The formula of the fire retardant in PVC CABLE MATERIALS

Technical field

The present invention relates to wire cable material field, particularly relate to the formula of the fire retardant in PVC CABLE MATERIALS.

Background technology

Fire safety standard-required along with domestic and international increasingly stringent, the environmental requirement of Nonpoisonous, non-environmental-pollution, the rapid growth of plastics, rubber, engineering plastics usage quantity, the consumption of fire retardant is anxious poly-increasing also, and fire retardant has become one of important raw materials for production of plastics, rubber, engineering plastics.Especially the goods such as electric wire, due in high pressure heating, are worked under the conditions such as electric discharge, once presence of fire just produces a large amount of smog and toxic gas, cause damage to property and loss of life and personal injury.For this reason, each state all in the resistance to combustion of active development, press down cigarette, fire retardant that price is low.

Fire retardant in PVC CABLE MATERIALS is mainly the compositions such as antimonous oxide, clorafin; ANTIMONY TRIOXIDE SB 203 99.8 PCT, is commonly called as stibium trioxide, is a kind of intermediate oxide, and pulverability is little, heat-resisting, and heating flavescence look cooling returns white after.Antimonous oxide coordinates with halogen contained compound, in their thermal decomposition process, plays fire retardation, and fire retardant rate is high, little for base material Effect on Mechanical Properties, is widely used in as fire retardant, applying in the plastics such as PVC, PP, PE, ABS.But the exploitation of antimony ore is but restricted at present, Guo Shi Resources Department has issued the notice > > of < < tungsten ore antimony ore in 2009 and rare-earth mineral exploitation overall control index at 2009 4 days, represent national antimony ore exploitation overall control index 90l80 ton in 2009, Ministry of Land and Resources determines in March, 2010, continues antimony ore to carry out exploitation overall control management; Within 2010, national antimony ore (amount of metal) exploitation overall control index is 1OOOOO ton; Before 30 days June in 2011, time-out is accepted new antimony ore and is reconnoitred, exploits application for registration in principle.

Along with country lists antimony in the enforcement of restriction resource exploitation list policy, the price of antimonous oxide is increasingly surging.Market price approaches 100,000 yuan/ton.Use separately antimonous oxide, consumption is large, cost is high, need to have other fire retardants reasonably to coordinate, and reduces costs, in the urgent need to releasing the novel environment friendly fire retardant that can substitute ANTIMONY TRIOXIDE SB 203 99.8 PCT.Through looking into publication number, be CN103073825A, name is called the application documents of " solid plasticising high flame retardant PVC sheath material composition and method of making the same "; According to related documents and experiment showed, in 1. embodiment mono-, in formula, adding 25% tritolyl phosphate is colourless or light yellow oily liquid, slightly phenol smell.Industrial goods are the mixture of three kinds of isomer, conventionally remove as far as possible the ortho isomer that toxicity is very large, viscosity (20 ℃) 78～185mPas.Be dissolved in benzene, ethers, alcohols, oils.Water insoluble, inflammable, hypertoxic, when adding this tittle, operative employee is had to very large injury, this formula is not fertile.

2. the plasticizer A M-168 that adds in formula, AM-168 be a kind of be the softening agent of solid powdery at normal temperatures.Be mainly used in the aspects such as plastics, senior ink, paint, thermosol, coating, protection against the tide, pottery, artificial marble.AM-168 is applied in plastics: AM-168 has good consistency with a lot of resins, there is good consistency with the resin such as polyvinyl chloride, acrylic resin, chlorinated rubber, polystyrene, urethane, nitrocellulose, cellulose acetate, can be used as secondary plasticizer and use.This product consumption is unsuitable excessive, is generally the 10-20% of softening agent total amount.Consumption is excessive, can make goods hardness strengthen, and adds 5%-7.5% in formula, is the 20-30% of whole softening agent.Product is very hard.

3. product performance: 1) tritolyl phosphate cryogenic effect is poor, cannot meet the low temperature requirement in GB/T8815 national standard.

2) tritolyl phosphate aging resistance is poor, cannot meet aging requirement in GB/T8815 national standard.So the application of " solid plasticising high flame retardant PVC sheath material composition and method of making the same " does not have practicality, can not implement to produce.

Summary of the invention

Object of the present invention is exactly the fire retardant that will provide in a kind of PVC CABLE MATERIALS, and it can reduce the expense that adopts ANTIMONY TRIOXIDE SB 203 99.8 PCT material.The object of the present invention is achieved like this, and the formula of the fire retardant in PVC CABLE MATERIALS, is characterized in that: the fire retardant of former a antimonous oxide, and the formula that equivalent adopts antimonous oxide and antimony sodium to press 1:1 forms; Be 0.5 part of antimonous oxide, 0.5 part, antimony sodium.

Its procedure of processing is 1). antimonous oxide, antimony sodium are stirred, milled according to the weight ratio of 1:1 with softening agent respectively.

2). weigh, reinforced: the fire retardant of milling to be weighed according to the ratio of antimonous oxide and antimony sodium 1:1, mix, add in homogenizer.

Described antimonous oxide, antimony sodium are 5 minutes with softening agent grinding time on two rod machines respectively.

The a fire retardant effect of the present invention surpasses the effect of the antimonous oxide of two parts, can improve the oxygen index of PVC wire cable material.Antimony sodium material resources is extensive, price is 1/5th of antimonous oxide, and to take other performance of damaging this material when improving fire-retardant object be cost reaching to have changed traditional fire retardant, and antimony sodium is due to the characteristic of self structure and composition, reaching the flame-retardant modified object while, do not affect material body performance, consistency and bonding force with plastic cement have greatly been improved, good dispersity, can increase and fill out the amount that permits, dipping property is good, mixing time is short, flows evenly, forming in mould.Mechanical property and the flame retardant properties of material have been strengthened simultaneously.

Embodiment

The formula of the fire retardant in PVC CABLE MATERIALS, is characterized in that: the fire retardant of former a antimonous oxide, and the formula that equivalent adopts antimonous oxide and antimony sodium to press 1:1 forms; Be 0.5 part of antimonous oxide, 0.5 part, antimony sodium.

3). weigh, reinforced: the fire retardant of milling to be weighed according to the ratio of antimonous oxide and antimony sodium 1:1, mix, add in homogenizer.

PVC CABLE MATERIALS formula is as follows: take oxygen index as 29 being example:

By relatively, newly fill a prescription cost-saving nearly 1.1 yuan/kilogram, on the not impact of the performance of product, oxygen index has improved 0.3, and general oxygen index > 27 belongs to nonflammable material.

Claims

The formula of the fire retardant in 1.PVC CABLE MATERIALS, is characterized in that: the fire retardant of former a antimonous oxide, and the formula that equivalent adopts antimonous oxide and antimony sodium to press 1:1 forms; Be 0.5 part of antimonous oxide, 0.5 part, antimony sodium.
2. the formula of the fire retardant in PVC CABLE MATERIALS according to claim 1, is characterized in that: its procedure of processing is 1). antimonous oxide, antimony sodium are stirred, milled according to the weight ratio of 1:1 with softening agent respectively;

2). weigh, reinforced: the fire retardant of milling to be weighed according to the ratio of antimonous oxide and antimony sodium 1:1, mix, add in homogenizer.
3. the formula of the fire retardant in PVC CABLE MATERIALS according to claim 2, is characterized in that: described antimonous oxide, antimony sodium are 5 minutes with softening agent grinding time on two rod machines respectively.