CN103554896A - Novel flame-retardant polyurethane hard foam - Google Patents

Abstract

The invention relates to novel flame-retardant polyurethane hard foam which comprises the materials A and B, wherein the material A comprises the following components of 100 parts of polyether polyol, 3-4 parts of fibrilia, 4.0-5.0 parts of jade flour, 35-45 parts of aluminum nitride powder, 1-2 parts of potassium acetate, 3-4 parts of water, 10-12 parts of dimyristyl alcohol ester, 3-4 parts of propanediol phenyl ether, 1-2 parts of soybean oil, 2-3 parts of ethyl acrylate, 10-12 parts of diatomite powder and 6-8 parts of modified attapulgite; the material B comprises the following component of 20-30 parts of diphenylmethane diisocyanate. According to the foam disclosed by the invention, the modified attapulgite is added, so that the foam not only has the adsorption effect, but also is a good physical flame retardant which has an excellent flame retarding effect. The foam provided by the invention has good dimensional stability, bending strength, light weight, sound insulation and heat insulation and is low in production cost and simple in process.

Description

A kind of novel flame-retardant hard polyurethane foam

Technical field

The present invention relates to a kind of foam, particularly a kind of novel flame-retardant hard polyurethane foam.

Background technology

Urethane foam is that isocyanic ester and oxy-compound are made through polymerization foaming, by its hardness, can be divided into soft and hard two classes.In general, it has splendid elasticity, flexibility, elongation and compressive strength; Chemical stability is good, resistance to many solvents and oils; High abrasion resistance, large 20 times compared with natural sponge; Also having the performances such as good processibility, heat insulating ability, binding property, be a kind of cushioning material of excellent property, but price is higher.Urethane foam is general only for buffering package or the cushion material of high-grade precision instrument, valuable apparatus, high-grade artwork etc., also can be made into packaging vessel exquisite, that protectiveness is fabulous; Also can adopt foam-in-place to carry out buffering package to article.

Attapulgite Shi Han Shuifu County magnesium silicate crystal mineral, have unique layer chain-like structure, unusual colloidal property and powerful adsorptive power; In addition, attapulgite has numerous nano level zeolite cavities that are parallel to excellent brilliant direction, thereby has sizable internal surface area; Its crystal grain is very little simultaneously, and outer surface area is also very large.The adsorption of attapulgite is divided into physical adsorption and chemisorption.Natural attapulgite clay comprises some dirts, as montmorillonite, kaolinite, carbonate, a small amount of particulate quartz and feldspar, may stop up duct, reduce surface-area, weakened whole physical and chemical performance, thereby colloidality, adsorptivity of making attapulgite clay etc. are greatly affected in industrial application.The method of activation modification can be removed the impurity of natural attapulgite clay, increases specific surface area, improves its absorption and ion-exchange performance, makes attapulgite clay be widely used in the fields such as absorption, decolouring, dytory, catalyzer and carrier.In attapulgite, contain zeolite water and crystal water, the water discharging when porous plastics burns can reduce the temperature of porous plastics, thereby plays certain fire retardation; In addition, contain Mg, Si element in attapulgite, the oxide compound generating during burning covers Foam Plastic Surface starvation, thereby reaches fire-retardant object.

Summary of the invention

The object of this invention is to provide the good novel flame-retardant hard polyurethane foam of a kind of flame retardant properties.

In order to realize object of the present invention, the present invention passes through following scheme implementation:

A hard polyurethane foam, by the mixing of A, B material, cast, reaction, the slaking of following weight part, made:

A material: polyether glycol 100, flaxen fiber 3-4, jade powder 4.0-5.0, aluminum nitride powder 35-45, Potassium ethanoate 1-2, water 3-4, two ten four carbon alcohols ester 10-12, propylene glycol phenylate 3-4, soybean oil 1-2, ethyl propenoate 2-3, diatomite in powder 10-12, attapulgite modified 6-8;

B material: diphenylmethanediisocyanate 20-30;

Described attapulgite modified preparation by the following method: the raw material that takes following weight part: attapulgite 95-110, Iron-ore Slag 1-2, stalk ashes 50-55, gypsum 3-4, vinylbenzene 2-3, xitix 2-3, Dyhard RU 100 1-2, bicarbonate of ammonia 3-4, ethyl acetate 3-4, dioctyl ester 4-5, Sodium Selenite 5-6, borax 3-4, clorafin 1-2; Preparation method puts into calcining furnace by attapulgite, Iron-ore Slag, gypsum, at 570-590 ℃, calcines 4-5 hour, takes out, mix with stalk ashes, bicarbonate of ammonia, borax, be ground to and obtain 300-400 order powder, then, then add vinylbenzene, xitix, Dyhard RU 100 to mix, continue to grind 30-45 minute, to fully disperseing, then add other remaining component, continue to grind after 30-45 minute, under 1500-1800 rev/min, stir 15-30 minute, obtain attapulgite modified.

Novel flame-retardant hard polyurethane foam of the present invention, is prepared from by following concrete steps:

A is expected to each raw material mixes, grind at normal temperatures 20-30 minute, obtain slurry; B material is added in A material, 200-300 rev/min is stirred 30-45 second again; Be poured into free foaming in mould, obtain mould base; Then, together with mould, mould base is sent in tunnel type baking oven to temperature-gradient method: at 40-45 ℃, reaction 15-25 minute; At 55-65 ℃, react 10-15 minute again; At 75-85 ℃, react 5-10 minute again; Last slaking 5-7 hour at 90-100 ℃.

The present invention adds attapulgite modified, not only has adsorption, and is a kind of good physics fire retardant, has excellent fire retardation; The present invention has good dimensional stability, flexural strength, lightweight, sound insulation, insulation; Production cost is low, and technique is simple.

Specific embodiments

Below by specific examples, the present invention is described in detail.

A hard polyurethane foam, by the mixing of A, B material, cast, reaction, the slaking of following weight part, made:

A material: each parts by weight of raw materials be (weight part be kilogram): polyether glycol 100, flaxen fiber 3, jade powder 4.0, aluminum nitride powder 35, Potassium ethanoate 1, water 3, two ten four carbon alcohols esters 10, propylene glycol phenylate 3, soybean oil 1, ethyl propenoate 2, diatomite in powder 10, attapulgite modified 6;

B material: each parts by weight of raw materials be (weight part be kilogram): diphenylmethanediisocyanate 20;

Described attapulgite modified by the following method preparation: take following weight part (kilogram) raw material: attapulgite 95, Iron-ore Slag 1, stalk ashes 50, gypsum 3, vinylbenzene 2, xitix 2, Dyhard RU 100 1, bicarbonate of ammonia 3, ethyl acetate 3, dioctyl ester 4, Sodium Selenite 5, borax 3, clorafin 1; Preparation method puts into calcining furnace by attapulgite, Iron-ore Slag, gypsum, at 570-590 ℃, calcines 4-5 hour, takes out, mix with stalk ashes, bicarbonate of ammonia, borax, be ground to and obtain 300-400 order powder, then, then add vinylbenzene, xitix, Dyhard RU 100 to mix, continue to grind 30-45 minute, to fully disperseing, then add other remaining component, continue to grind after 30-45 minute, under 1500-1800 rev/min, stir 15-30 minute, obtain attapulgite modified.

Novel flame-retardant hard polyurethane foam of the present invention, is prepared from by following concrete steps:

A is expected to each raw material mixes, grind at normal temperatures 20-30 minute, obtain slurry; B material is added in A material, 200-300 rev/min is stirred 30-45 second again; Be poured into free foaming in mould, obtain mould base; Then, together with mould, mould base is sent in tunnel type baking oven to temperature-gradient method: at 40-45 ℃, reaction 15-25 minute; At 55-65 ℃, react 10-15 minute again; At 75-85 ℃, react 5-10 minute again; Last slaking 5-7 hour at 90-100 ℃.

Each functional parameter of the material of gained is as follows: compressive strength (MPa): 0.27, and oxygen index: 23, thermal conductivity (W/mK): 0.033.

Claims (1)

1. a novel flame-retardant hard polyurethane foam, is characterized in that being made by the mixing of A, B material, cast, reaction, the slaking of following weight part:

A material: polyether glycol 100, flaxen fiber 3-4, jade powder 4.0-5.0, aluminum nitride powder 35-45, Potassium ethanoate 1-2, water 3-4, two ten four carbon alcohols ester 10-12, propylene glycol phenylate 3-4, soybean oil 1-2, ethyl propenoate 2-3, diatomite in powder 10-12, attapulgite modified 6-8;

B material: diphenylmethanediisocyanate 20-30;

Described attapulgite modified preparation by the following method: the raw material that takes following weight part: attapulgite 95-110, Iron-ore Slag 1-2, stalk ashes 50-55, gypsum 3-4, vinylbenzene 2-3, xitix 2-3, Dyhard RU 100 1-2, bicarbonate of ammonia 3-4, ethyl acetate 3-4, dioctyl ester 4-5, Sodium Selenite 5-6, borax 3-4, clorafin 1-2; Preparation method puts into calcining furnace by attapulgite, Iron-ore Slag, gypsum, at 570-590 ℃, calcines 4-5 hour, takes out, mix with stalk ashes, bicarbonate of ammonia, borax, be ground to and obtain 300-400 order powder, then, then add vinylbenzene, xitix, Dyhard RU 100 to mix, continue to grind 30-45 minute, to fully disperseing, then add other remaining component, continue to grind after 30-45 minute, under 1500-1800 rev/min, stir 15-30 minute, obtain attapulgite modified.