CN103483544A - Polyurethane foam filled with glass beads - Google Patents

Abstract

The invention relates to polyurethane foam filled with glass beads. The polyurethane foam is characterized by being prepared through mixing, pouring, reacting and curing A materials and a B material in parts by weight, wherein the A materials include 100 parts of polyether polyol, 10-12 parts of the glass beads, 5-6 parts of nanocarbon, 1-2 parts of urotropin, 2-3 parts of triethanolamine, 3-4 parts of water, 1-3 parts of vanadium pentoxide, 3-5 parts of aluminium hydroxide, 2-3 parts of sodium tripolyphosphate, 2-4 parts of poval and 6-8 parts of modified attapulgite; the B material includes 20-23 parts of diphenylmethane diisocyanate. The modified attapulgite is added, so that the polyurethane foam has the adsorption function, is an excellent physical fire retardant, has excellent fire retardance, has excellent thermal insulation effect and greatly improves the hardness of the polyurethane foam as the glass beads are filled, and is low in heat conductivity coefficient, the production period is short, the process is simple, and the realization of industrial production is facilitated.

Description

A kind of polyurethane foamed material of filling glass bead

Technical field

The present invention relates to a kind of foam materials, particularly a kind of polyurethane foamed material of filling glass bead.

Background technology

Urethane foam is that isocyanic ester and oxy-compound are made through the polymerization foaming, by its hardness, can be divided into soft and hard two classes, and wherein soft is principal item.In general, it has splendid elasticity, flexibility, elongation and compressive strength; Chemical stability is good, anti-many solvents and oils; High abrasion resistance, large 20 times than 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.

As the urethane foam in the application of bearing structure material, except thering is above-mentioned advantage, also requiring has higher intensity, modulus and deformation stable, the technical indicators such as the flexural strength of polyurethane foamed material and shock strength often can not meet service requirements, thereby have limited being widely used of it.Adopt in recent years reinforced materials to prepare polyurethane foam composite and obtained research widely, this method has reduced cost in the mechanical property that has improved material.The strongthener adopted at present mainly comprises these two kinds of particle and fibers, and wherein particle comprises glass microballon, silicon dioxide granule, calcium carbonate and graphite etc.; Fiber comprises glass fibre, organic fibre, vegetable fibre, and carbon fiber, steel fiber etc.Although described filler makes moderate progress to the mechanical property of polyurethane foamed material and incendivity etc., but it is high to be limited to the polyurethane foam material volume expansion ratio, the raw material volumetric usage is little, traditional directly toward the fill method of sneaking into the filling phase in raw material, often can only insert the weighting material of minute quantity, not have the purpose reduced costs.In addition, the heat-insulating property of inserting in a large number meeting reduction compound polyurethane material of filler, make to make material heat insulation effect variation as mentioned above.

Attapulgite is containing Shuifu County's magnesium silicate crystal mineral, has 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, if you would take off stone, 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.Contain zeolite water and crystal water in attapulgite, the water discharged 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 generated during burning covers the Foam Plastic Surface starvation, thereby reaches fire-retardant purpose.

Summary of the invention

The object of the present invention is to provide a kind of intensity high, rigidity and shock resistance are good, and the low and manufacturing process of thermal conductivity is simply filled the polyurethane foamed material of glass bead.

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

A kind of polyurethane foamed material of filling glass bead, by the mixing of A, B material, cast, reaction, the slaking of following weight part, made:

A material: polyether glycol 100, glass bead 10-12, nano-sized carbon 5-6, urotropine 1-2, trolamine 2-3, water 3-4, Vanadium Pentoxide in FLAKES 1-3, aluminium hydroxide 3-5, tripoly phosphate sodium STPP 2-3, polyvinyl alcohol 2-4, attapulgite modified 6-8;

B material: diphenylmethanediisocyanate 20-23.

Described attapulgite modified preparation by the following method: the raw material that takes following weight part: attapulgite 150-155, jade 3-4, Flos Rosae Rugosae quintessence oil 1-2, stalk ashes 50-55, Silane coupling agent KH550 1-2, sodium bicarbonate 2-3, pentaerythritol triacrylate 2-3, Vanay 1-2, linking agent TAC1-2, aluminium hydroxide 3-4; The preparation method puts into calcining furnace by attapulgite, jade, and under 610-630 ℃, calcining 3-4 hour, take out, with stalk ashes, sodium bicarbonate, mix, be ground to and obtain 300-400 order powder, then, then add pentaerythritol triacrylate, aluminium hydroxide, Silane coupling agent KH550 to mix, continue to grind 30-45 minute, to fully disperseing, then add other remaining component, continue to grind after 30-45 minute, stir 15-30 minute under 1500-1800 rev/min, obtain attapulgite modified.

The polyurethane foamed material of filling glass bead 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; The B material is added in the A material, 200-300 rev/min is stirred 30-45 second again; Be poured into free foaming in mould, obtain the mould base; Then, together with mould, the mould base is sent in tunnel type baking oven to temperature-gradient method: under 40-45 ℃, reaction 15-25 minute; Under 55-65 ℃, react 10-15 minute again; Under 75-85 ℃, react 5-10 minute again; Finally at 90-100 ℃ of lower slaking 5-7 hour.

The present invention adds attapulgite modified, not only has adsorption, and is a kind of good physics fire retardant, has excellent fire retardation; Fill glass bead in the present invention, have good heat insulation effect, and increased substantially the hardness of foam materials, thermal conductivity is low, with short production cycle, and technique is simple, is convenient to realize suitability for industrialized production.

Specific embodiments

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

A kind of polyurethane foamed material of filling glass bead, by the mixing of A, B material, cast, reaction, the slaking of following weight part, made:

The A material: each parts by weight of raw materials is (weight part is kilogram): polyether glycol 100, glass bead 10, nano-sized carbon 5, urotropine 1, trolamine 2, water 3, Vanadium Pentoxide in FLAKES 1, aluminium hydroxide 3, tripoly phosphate sodium STPP 2, polyvinyl alcohol 2, attapulgite modified 6;

The B material: each parts by weight of raw materials is (weight part is kilogram): diphenylmethanediisocyanate 20.

Described attapulgite modified preparation by the following method: the raw material that takes following weight part (kilogram): attapulgite 150, jade 3, Flos Rosae Rugosae quintessence oil 1, stalk ashes 50, Silane coupling agent KH550 1, sodium bicarbonate 2, pentaerythritol triacrylate 2, Vanay 1, linking agent TAC1, aluminium hydroxide 3; The preparation method puts into calcining furnace by attapulgite, jade, and under 610-630 ℃, calcining 3-4 hour, take out, with stalk ashes, sodium bicarbonate, mix, be ground to and obtain 300-400 order powder, then, then add pentaerythritol triacrylate, aluminium hydroxide, Silane coupling agent KH550 to mix, continue to grind 30-45 minute, to fully disperseing, then add other remaining component, continue to grind after 30-45 minute, stir 15-30 minute under 1500-1800 rev/min, obtain attapulgite modified.

The polyurethane foamed material of filling glass bead 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; The B material is added in the A material, 200-300 rev/min is stirred 30-45 second again; Be poured into free foaming in mould, obtain the mould base; Then, together with mould, the mould base is sent in tunnel type baking oven to temperature-gradient method: under 40-45 ℃, reaction 15-25 minute; Under 55-65 ℃, react 10-15 minute again; Under 75-85 ℃, react 5-10 minute again; Finally at 90-100 ℃ of lower slaking 5-7 hour.

Each functional parameter of the material of gained is as follows: compressive strength (MPa): 0.26, and oxygen index: 29, thermal conductivity (W/mK): 0.035.

Claims (1)

1. a polyurethane foamed material of filling glass bead 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, glass bead 10-12, nano-sized carbon 5-6, urotropine 1-2, trolamine 2-3, water 3-4, Vanadium Pentoxide in FLAKES 1-3, aluminium hydroxide 3-5, tripoly phosphate sodium STPP 2-3, polyvinyl alcohol 2-4, attapulgite modified 6-8;

B material: diphenylmethanediisocyanate 20-23;

Described attapulgite modified preparation by the following method: the raw material that takes following weight part: attapulgite 150-155, jade 3-4, Flos Rosae Rugosae quintessence oil 1-2, stalk ashes 50-55, Silane coupling agent KH550 1-2, sodium bicarbonate 2-3, pentaerythritol triacrylate 2-3, Vanay 1-2, linking agent TAC1-2, aluminium hydroxide 3-4; The preparation method puts into calcining furnace by attapulgite, jade, and under 610-630 ℃, calcining 3-4 hour, take out, with stalk ashes, sodium bicarbonate, mix, be ground to and obtain 300-400 order powder, then, then add pentaerythritol triacrylate, aluminium hydroxide, Silane coupling agent KH550 to mix, continue to grind 30-45 minute, to fully disperseing, then add other remaining component, continue to grind after 30-45 minute, stir 15-30 minute under 1500-1800 rev/min, obtain attapulgite modified.