CN104072900B - A kind of heat-insulating flame-retardant PS porous plastics and its preparation method - Google Patents

Abstract

The present invention discloses a kind of heat-insulating flame-retardant PS porous plastics and its preparation method, take PS, '-diphenylmethane diisocyanate, resol, nanmeter antimong trioxide, decabromodiphynly oxide, pentane, 2, raw material, for thing, sulfuric acid, benzoyl peroxide, refrigeration agent, diatomite, tolyl diphenyl phosphoester and stablizer, is passed through and stirs even after fixing by 4-dihydroxyl quinoline, methane chlorine; Product relative density 0.026-0.028, porosity 97-98%; Compressive strength 3-5MPa, cell diameter 0.08-0.12mm; Thermal conductivity 0.014-0.017W/(m k), oxygen index 29%-32%, it is possible to the widespread production not division of history into periods is for current material.

Description

A kind of heat-insulating flame-retardant PS porous plastics and its preparation method

Technical field

The present invention relates to a kind of PS porous plastics, particularly relate to a kind of heat-insulating flame-retardant PS porous plastics and its preparation method, belong to plastic material technical field.

Background technology

PS refers to that macromolecular chain comprises class plastics of styryl, comprising vinylbenzene and multipolymer thereof, concrete kind comprises ordinary polystyrene (GPPS), high-impact polystyrene (HIPS), Expandable Polystyrene (EPS) (EPS) and metallocene polystyrene (SPS) etc. General purpose grade polystyrene is a kind of thermoplastic resin, for colourless, without smelly, tasteless and glossy, transparent pearl or granular solid. Density 1.04��1.09, transparency 88%��92%, specific refractory power 1.59��1.60. Under stress, produce double refraction, i.e. so-called stress-optical effect. The melt temperature of product 150��180 DEG C, heat decomposition temperature 300 DEG C, heat-drawn wire 70��100 DEG C, life-time service temperature is 60��80 DEG C. At low 5��6 DEG C of relatively heat-drawn wire, after anneal, can eliminate stress, heat-drawn wire is increased. If adding a little alpha-methyl styrene in production process, the temperature classification of general purpose polystyrene can be improved.

PS is widely used in optics industry, this is because it has caused by good light transmission, can manufacture opticglass and opticinstrument, it is possible to make transparent or brightly painted, such as lampshade, lighting fixtures etc. PS also can make the many electric components and instrument etc. that work in high frequency environment. Owing to PS plastics belong to difficult inactive surfaces material, laminating in industry, it is necessary to use specialty PS glue bonding.

Polystyrene is the thermoplastics of a kind of water white transparency, has the glass transition temp higher than 100 DEG C, and therefore often being used to make various needs the one-trip container bearing the temperature of boiling water, and disposable foam food boxes etc. Ordinary polystyrene resin belongs to amorphous macromolecule polymkeric substance, the side base of polystyrene macromolecular chain is phenyl ring, large volume side base is the physicochemical property that the random arrangement of phenyl ring determines polystyrene, such as transparency height. and rigidity is big. and second-order transition temperature height, property is crisp. Expandable Polystyrene (EPS) is made for flooding lower boiling pneumatogen in ordinary polystyrene, by heat foamable in the course of processing, special in making foam article. High-impact polystyrene is the multipolymer of vinylbenzene and divinyl, divinyl is disperse phase, it is to increase the shock strength of material, but product is opaque. Syndiotactic polystyrene is isostructure, adopts metallocene catalyst to produce, and the polystyrene new variety of development, performance is good, belongs to engineering plastics.

Polystyrene maximum operating temperature is 60��80 DEG C. When being heated to more than Tg, PS is changed into elastomeric state, and keeps this kind of state in wider scope, and this just makes its thermoforming provide convenience. The heat-drawn wire of PS is 70��80 DEG C, and embrittlement temperature is-30 DEG C, and PS acutely degrades at high vacuum and 330��380 DEG C.

Chinese patent CN103665619A, publication date is on March 26th, 2014, disclose the bent adiabatic PS porous plastics of a kind of bending resistance and its preparation method, mainly adopt PS, aluminium powder, talcum powder, butane, methyl chloride, whiteruss and stablizer are made, solve the defect that resistance to bending can exist with heat-insulating property, but relative density, porosity, compressive strength and cell diameter etc. do not improve, along with society's urbanization, technicalization, the development of hommization, a kind of relative density of design, porosity, the heat-insulating flame-retardant PS porous plastics of compressive strength and cell diameter excellence and its preparation method, to meet the need of market, it is very important.

Summary of the invention

The technical problem solved:

The application does not have the technical problem of significant improvement for existing PS porous plastics relative density, porosity, compressive strength and cell diameter, it is provided that one utilizes heat-insulating flame-retardant PS porous plastics and its preparation method.

Technical scheme:

A kind of heat-insulating flame-retardant PS porous plastics, raw materials by weight portion proportioning is as follows: PS100 part, '-diphenylmethane diisocyanate 60-80 part, resol 10-20 part, nanmeter antimong trioxide 5-25 part, decabromodiphynly oxide 5-15 part, pentane 1-10 part, 2,4-dihydroxyl quinoline 5-25 part, methane chlorine for thing 5-15 part, sulfuric acid 10-30 part, benzoyl peroxide 0.2-0.8 part, refrigeration agent 40-60 part, diatomite 2-8 part, tolyl diphenyl phosphoester 15-35 part, stablizer 2-8 part.

As a preferred technical solution of the present invention: the raw materials by weight portion proportioning of described heat-insulating flame-retardant PS porous plastics is as follows: PS100 part, '-diphenylmethane diisocyanate 65-75 part, resol 13-17 part, nanmeter antimong trioxide 10-20 part, decabromodiphynly oxide 8-12 part, pentane 3-7 part, 2,4-dihydroxyl quinoline 10-20 part, methane chlorine is for thing 7-13 part, sulfuric acid 15-25 part, benzoyl peroxide 0.4-0.6 part, refrigeration agent 45-55 part, diatomite 4-6 part, tolyl diphenyl phosphoester 20-30 part, stablizer 3-7 part.

As a preferred technical solution of the present invention: the raw materials by weight portion proportioning of described heat-insulating flame-retardant PS porous plastics is as follows: PS100 part, '-diphenylmethane diisocyanate 70 parts, 15 parts, resol, nanmeter antimong trioxide 15 parts, decabromodiphynly oxide 10 parts, pentane 5 parts, 15 parts, 2,4-dihydroxyl quinoline, methane chlorine is for thing 10 parts, 20 parts, sulfuric acid, benzoyl peroxide 0.5 part, refrigeration agent 50 parts, 5 parts, diatomite, tolyl diphenyl phosphoester 25 parts, stablizer 5 parts.

As a preferred technical solution of the present invention: described refrigeration agent adopts HCFC-141b or perfluor Skellysolve A.

As a preferred technical solution of the present invention: described stablizer adopts calcium stearate or barium stearate.

Preparation method's step of described heat-insulating flame-retardant PS porous plastics is:

The first step: proportioning takes PS, benzoyl peroxide and nanmeter antimong trioxide and mixes at 200-220 DEG C by weight, adds pentane, diatomite, 2,4-dihydroxyl quinoline and methane chlorine for thing, stirs evenly;

2nd step: be cooled to 110-130 DEG C, add surplus stock, stirs 20-60min;

3rd step: the material after the 2nd step being stirred solidifies 2-4h after injecting mould at 50 DEG C, more at room temperature puts 3-5 days.

Useful effect:

Compared to the prior art a kind of heat-insulating flame-retardant PS porous plastics of the present invention and its preparation method adopt above technical scheme, have following technique effect: 1, product relative density 0.026-0.028, porosity 97-98%; 2, compressive strength 3-5MPa, cell diameter 0.08-0.12mm; 3, thermal conductivity 0.014-0.017W/(m k), oxygen index 29%-32%, it is possible to the widespread production not division of history into periods is for current material.

Embodiment

Embodiment 1:

Proportioning takes PS100 part by weight, '-diphenylmethane diisocyanate 60 parts, 10 parts, resol, nanmeter antimong trioxide 5 parts, decabromodiphynly oxide 5 parts, pentane 1 part, 2, 5 parts, 4-dihydroxyl quinoline, methane chlorine is for thing 5 parts, 10 parts, sulfuric acid, benzoyl peroxide 0.2 part, perfluor Skellysolve A 40 parts, 2 parts, diatomite, tolyl diphenyl phosphoester 15 parts, calcium stearate 2 parts, proportioning takes PS by weight, benzoyl peroxide and nanmeter antimong trioxide mix at 200 DEG C, add pentane, diatomite, 2, 4-dihydroxyl quinoline and methane chlorine are for thing, stir evenly, it is cooled to 110 DEG C, add surplus stock, stir 20min, after material after stirring injects mould, 2h is solidified at 50 DEG C, at room temperature put 3 days again.

Product relative density 0.026, porosity 98%; Compressive strength 3MPa, cell diameter 0.08mm; Thermal conductivity 0.017W/(m k), oxygen index 29%%.

Embodiment 2:

Proportioning takes PS100 part by weight, '-diphenylmethane diisocyanate 80 parts, 20 parts, resol, nanmeter antimong trioxide 25 parts, decabromodiphynly oxide 15 parts, pentane 10 parts, 2, 25 parts, 4-dihydroxyl quinoline, methane chlorine is for thing 15 parts, 30 parts, sulfuric acid, benzoyl peroxide 0.8 part, perfluor Skellysolve A 60 parts, 8 parts, diatomite, tolyl diphenyl phosphoester 35 parts, calcium stearate 8 parts, proportioning takes PS by weight, benzoyl peroxide and nanmeter antimong trioxide mix at 220 DEG C, add pentane, diatomite, 2, 4-dihydroxyl quinoline and methane chlorine are for thing, stir evenly, it is cooled to 130 DEG C, add surplus stock, stir 60min, after material after stirring injects mould, 4h is solidified at 50 DEG C, at room temperature put 5 days again.

Product relative density 0.0265, porosity 98%; Compressive strength 3.5MPa, cell diameter 0.12mm; Thermal conductivity 0.016W/(m k), oxygen index 30%.

Embodiment 3:

Proportioning takes PS100 part by weight, '-diphenylmethane diisocyanate 65 parts, 13 parts, resol, nanmeter antimong trioxide 10 parts, decabromodiphynly oxide 8 parts, pentane 3 parts, 2, 10 parts, 4-dihydroxyl quinoline, methane chlorine is for thing 7 parts, 15 parts, sulfuric acid, benzoyl peroxide 0.4 part, perfluor Skellysolve A 45 parts, 4 parts, diatomite, tolyl diphenyl phosphoester 20 parts, barium stearate 3 parts, proportioning takes PS by weight, benzoyl peroxide and nanmeter antimong trioxide mix at 205 DEG C, add pentane, diatomite, 2, 4-dihydroxyl quinoline and methane chlorine are for thing, stir evenly, it is cooled to 115 DEG C, add surplus stock, stir 30min, after material after stirring injects mould, 2h is solidified at 50 DEG C, at room temperature put 3 days again.

Product relative density 0.027, porosity 98%; Compressive strength 4MPa, cell diameter 0.09mm; Thermal conductivity 0.016W/(m k), oxygen index 30%.

Embodiment 4:

Proportioning takes PS100 part by weight, '-diphenylmethane diisocyanate 75 parts, 17 parts, resol, nanmeter antimong trioxide 20 parts, decabromodiphynly oxide 12 parts, pentane 7 parts, 2, 20 parts, 4-dihydroxyl quinoline, methane chlorine is for thing 13 parts, 25 parts, sulfuric acid, benzoyl peroxide 0.6 part, HCFC-141b55 part, 6 parts, diatomite, tolyl diphenyl phosphoester 30 parts, barium stearate 7 parts, proportioning takes PS by weight, benzoyl peroxide and nanmeter antimong trioxide mix at 215 DEG C, add pentane, diatomite, 2, 4-dihydroxyl quinoline and methane chlorine are for thing, stir evenly, it is cooled to 125 DEG C, add surplus stock, stir 50min, after material after stirring injects mould, 3h is solidified at 50 DEG C, at room temperature put 4 days again.

Product relative density 0.0275, porosity 98%; Compressive strength 4.5MPa, cell diameter 0.11mm; Thermal conductivity 0.015W/(m k), oxygen index 31%.

Embodiment 5:

Proportioning takes PS100 part by weight, '-diphenylmethane diisocyanate 70 parts, 15 parts, resol, nanmeter antimong trioxide 15 parts, decabromodiphynly oxide 10 parts, pentane 5 parts, 2, 15 parts, 4-dihydroxyl quinoline, methane chlorine is for thing 10 parts, 20 parts, sulfuric acid, benzoyl peroxide 0.5 part, HCFC-141b50 part, 5 parts, diatomite, tolyl diphenyl phosphoester 25 parts, barium stearate 5 parts, proportioning takes PS by weight, benzoyl peroxide and nanmeter antimong trioxide mix at 210 DEG C, add pentane, diatomite, 2, 4-dihydroxyl quinoline and methane chlorine are for thing, stir evenly, it is cooled to 120 DEG C, add surplus stock, stir 40min, after material after stirring injects mould, 3h is solidified at 50 DEG C, at room temperature put 4 days again.

Product relative density 0.028, porosity 97%; Compressive strength 5MPa, cell diameter 0.1mm; Thermal conductivity 0.014W/(m k), oxygen index 32%.

All components in above embodiment all can business be bought.

Above-described embodiment is just for setting forth the content of the present invention, instead of restriction, and the therefore any change in the implication suitable with the claim book of the present invention and scope, all it is believed that be included in the scope of claim book.

Claims (6)

1. a heat-insulating flame-retardant PS porous plastics, it is characterized in that, the raw materials by weight portion proportioning of described heat-insulating flame-retardant PS porous plastics is as follows: PS100 part, '-diphenylmethane diisocyanate 60-80 part, resol 10-20 part, nanmeter antimong trioxide 5-25 part, decabromodiphynly oxide 5-15 part, pentane 1-10 part, 2,4-dihydroxyl quinoline 5-25 part, methane chlorine is for thing 5-15 part, sulfuric acid 10-30 part, benzoyl peroxide 0.2-0.8 part, refrigeration agent 40-60 part, diatomite 2-8 part, tolyl diphenyl phosphoester 15-35 part, stablizer 2-8 part.

2. a kind of heat-insulating flame-retardant PS porous plastics according to claim 1, it is characterized in that, the raw materials by weight portion proportioning of described heat-insulating flame-retardant PS porous plastics is as follows: PS100 part, '-diphenylmethane diisocyanate 65-75 part, resol 13-17 part, nanmeter antimong trioxide 10-20 part, decabromodiphynly oxide 8-12 part, pentane 3-7 part, 2, 4-dihydroxyl quinoline 10-20 part, methane chlorine is for thing 7-13 part, sulfuric acid 15-25 part, benzoyl peroxide 0.4-0.6 part, refrigeration agent 45-55 part, diatomite 4-6 part, tolyl diphenyl phosphoester 20-30 part, stablizer 3-7 part.

3. a kind of heat-insulating flame-retardant PS porous plastics according to claim 1, it is characterized in that, the raw materials by weight portion proportioning of described heat-insulating flame-retardant PS porous plastics is as follows: PS100 part, '-diphenylmethane diisocyanate 70 parts, 15 parts, resol, nanmeter antimong trioxide 15 parts, decabromodiphynly oxide 10 parts, pentane 5 parts, 15 parts, 2,4-dihydroxyl quinoline, methane chlorine is for thing 10 parts, 20 parts, sulfuric acid, benzoyl peroxide 0.5 part, refrigeration agent 50 parts, 5 parts, diatomite, tolyl diphenyl phosphoester 25 parts, stablizer 5 parts.

4. a kind of heat-insulating flame-retardant PS porous plastics according to claim 1, it is characterised in that, described refrigeration agent adopts HCFC-141b or perfluor Skellysolve A.

5. a kind of heat-insulating flame-retardant PS porous plastics according to claim 1, it is characterised in that: described stablizer adopts calcium stearate or barium stearate.

6. the preparation method of heat-insulating flame-retardant PS porous plastics described in a claim 1, it is characterised in that, comprise the steps:

The first step: proportioning takes PS, benzoyl peroxide and nanmeter antimong trioxide and mixes at 200-220 DEG C by weight, adds pentane, diatomite, 2,4-dihydroxyl quinoline and methane chlorine for thing, stirs evenly;

2nd step: be cooled to 110-130 DEG C, add surplus stock, stirs 20-60min;

3rd step: the material after the 2nd step being stirred solidifies 2-4h after injecting mould at 50 DEG C, more at room temperature puts 3-5 days.