A matt ps diffusion optical laminated sheet and a preparation method thereof

Abstract

The application relates to the field of extinction PS diffusion optical board materials, and particularly discloses an extinction PS diffusion optical laminated board material and a preparation method thereof. The extinction PS diffusion optical laminated board material comprises a laminated A layer: 85-95 parts of HIPS, 1-4 parts of butadiene styrene rubber, 1-6 parts of a compatilizer, 0.5-2 parts of a chain extender, 0.30-0.60 parts of a dispersing agent, 0.30-0.60 parts of a heat stabilizer and 0.5-1 part of an anti-aging agent; and a laminated B layer: 98-99 parts of GPPS and 0.8-2 parts of an organic silicon diffusion agent. The extinction PS diffusion optical laminated board material is prepared in the following manner: preparing A layer extrusion materials; preparing B layer extrusion materials; and calendering into AB or ABA laminated board materials. The extinction effect of the laminated A layer reaction can reduce the surface gloss of the PS board material while not affecting the light transmittance of the PS board material, the material cost of the PS extinction diffusion optical board material can be reduced through double-layer lamination, and the obtained PS extinction diffusion optical board material has the advantages of good extinction effect, adjustable light transmittance, more stable and uniform gloss, higher toughness and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of extinction PS diffusion optical board, more particularly, it relates to an extinction PS diffusion optical laminated board and a preparation method thereof. BACKGROUND

[0002] In the related art, PS board is often used to make matte lampshade, and the PS board is often made by adding inorganic or organic matte particles on the basis of the substrate or by arranging the array of micro-feature structures on the surface of the substrate to artificially adjust light, so that the light is refracted, reflected and scattered in different directions, thereby reducing the ability of the matte lampshade surface to reflect light, reducing the interference of reflected light, and further making the matte lampshade surface present a matte effect.

[0003] However, the structure type board achieving the matte effect by arranging the array of micro-feature structures on the surface of the substrate is prone to causing the lines to disappear due to the collapse of the structure during secondary processing, i.e., heating. Thus, although the matte effect of the PS board is good, the matte effect of the matte lampshade processed from the structure type board is not good, and the lampshade is obviously brightened.

[0004] In addition, the extinction diffusion optical by adding inorganic matte particles on the basis of the PS substrate has the problems of poor compatibility between the inorganic matte particles and the PS substrate due to the heavy weight of the inorganic matte particles, and the mechanical properties of the lampshade, such as toughness, are also affected. Moreover, the light transmittance of the inorganic matte particles is not adjustable, and too many inorganic matte particles will result in poor light transmittance. SUMMARY

[0005] In order to make the PS board have good extinction effect when making a lampshade, the light transmittance is adjustable, the gloss is more stable and uniform, and the toughness is higher, the present application provides an extinction PS diffusion optical laminated board and a preparation method thereof.

[0006] The extinction PS diffusion optical laminated board and the preparation method thereof provided by the present application adopt the following technical scheme: in a first aspect, the present application provides an extinction PS diffusion optical laminated board, which adopts the following technical scheme:

[0007] The extinction PS diffusion optical laminated board comprises a laminated A layer and a laminated B layer, the laminated A layer comprises the following components by weight fraction: HIPS 85-95 parts, styrene-butadiene rubber 1-4 parts, a compatibilizer 1-6 parts, a chain extender 0.5-2 parts, a dispersing agent 0.30-0.60 parts, a heat stabilizer 0.30-0.60 parts, and an anti-aging agent 0.5-1 part; the laminated B layer comprises the following components by weight fraction: GPPS 98-99 parts and an organic silicon diffusion agent 0.8-2 parts.

[0008] By adopting the technical scheme, in the covering A layer, the HIPS is the modified benzene, and the butadiene styrene rubber is dispersed in the HIPS, and under the action of the chain extender, the butadiene styrene rubber reacts with the HIPS to generate a plurality of small crosslinking polymer particles, the crosslinking polymer particles make the matt PS diffusion optical covering plate form an internal concave-convex feeling, thereby reducing the ability of the matt PS diffusion optical covering plate surface to reflect light, reducing the interference of the reflected light, and further making the surface of the matte lampshade present a matt effect, the compatilizer improves the compatibility and combination of the HIPS and the butadiene styrene rubber, the dispersing agent makes the butadiene styrene rubber more uniformly dispersed, so that the plurality of small crosslinking polymer particles are finer and more uniform, the heat stabilizer reduces the sensitivity of the butadiene styrene rubber and the HIPS to heating in the screw cylinder, prevents yellowing, and improves stability; the anti-aging agent improves the anti-aging property of the covering A layer. In the covering B layer, the GPPS is the transparent benzene, and under the action of the organic silicon diffusing agent, the diffusion effect is good, the light transmission is good, and the toughness is good. The matt effect of the covering A layer is formed by reaction, which reduces the gloss of the PS plate surface while not affecting the light transmission rate of the PS plate, and the covering A layer is double-covered with the covering B layer to reduce the material cost of the PS matt diffusion optical plate. Moreover, the crosslinking polymer particles generated in the covering A layer have a higher melting point, and when the matt PS diffusion optical covering plate is heated, the crosslinking polymer particles in the lampshade obtained by blow molding still stably exist, the crosslinking polymer particles make the lampshade form an internal concave-convex feeling, thereby reducing the ability of the matt PS diffusion optical covering plate surface to reflect light, reducing the interference of the reflected light, and further making the surface of the matte lampshade present a matt effect, so that the reflectivity of the lampshade is low, and the matte effect is good. Since the matte effect does not disappear from the matt PS diffusion optical covering plate to the matte lampshade, it is not necessary to additionally increase the process to realize the matte effect, the process is simplified, and the yield is improved; moreover, in the production process, the matte degree of the matt PS diffusion optical covering plate and the matte lampshade can be controlled by controlling the amount of the reactant and the reaction temperature, and the reflectivity of the matt PS diffusion optical covering plate and the matte lampshade is adjustable.

[0009] Optionally, the compatilizer is selected from a combination of one or more of maleic anhydride grafted POE of type CH905, 4,4'-(hexafluoroisopropylidene) diphthalic anhydride, glycidyl methacrylate, and poly(2-ethyl-2-oxazoline).

[0010] By adopting the technical scheme, the maleic anhydride grafted POE, 4,4'-(hexafluoroisopropylidene) diphthalic anhydride, glycidyl methacrylate and poly(2-ethyl-2-oxazoline) of model CH905 all belong to reactive compatibilizers, the maleic anhydride ester is a high molecular substance and is not easy to decompose and destroy at high temperature, and the 4,4'-(hexafluoroisopropylidene) diphthalic anhydride, glycidyl methacrylate and poly(2-ethyl-2-oxazoline) are also not easy to decompose and destroy at high temperature, so that the compatibilizer is selected as the combination of one or more of the maleic anhydride grafted POE, 4,4'-(hexafluoroisopropylidene) diphthalic anhydride, glycidyl methacrylate and poly(2-ethyl-2-oxazoline) of model CH905, so that the HIPS and the styrene-butadiene rubber can be more stable in compatibility at high temperature, and then the styrene-butadiene rubber can be more stable in reaction with the HIPS to generate crosslinked polymer particles.

[0011] Optionally, the chain extender is selected as the combination of one or more of dichloroethane, xylene and acrylonitrile.

[0012] By adopting the technical scheme, under the action of dichloroethane, xylene and acrylonitrile, the styrene-butadiene rubber is more easy to react with the HIPS to generate numerous tiny crosslinked polymer particles, the crosslinked polymer particles make the matt PS diffusion optical laminated board of the application form an internal concave-convex feeling, so as to reduce the ability of the matt PS diffusion optical laminated board surface to reflect light, reduce the interference of reflected light, and then make the surface of the matte lampshade present a matt effect.

[0013] Optionally, the dispersant is selected as the combination of sodium stearate, polyvinyl alcohol and epoxy ethane propane copolymer.

[0014] By adopting the technical scheme, the sodium stearate is an ionic dispersant, which can make the styrene-butadiene rubber dispersed in the HIPS in the form of particles, and facilitate subsequent processing. The polyvinyl alcohol is a non-ionic dispersant, which can be used to enhance the dispersion effect and improve the uniformity of the size of the styrene-butadiene rubber particles in the preparation process of the laminated A layer. The epoxy ethane propane copolymer helps to maintain the dispersion state of the styrene-butadiene rubber particles. The sodium stearate, polyvinyl alcohol and epoxy ethane propane copolymer synergistically make the styrene-butadiene rubber stably and uniformly dispersed in the HIPS in the form of particles, and then react with the HIPS to generate crosslinked polymer particles with more obvious internal concave-convex feeling, so that the matt PS diffusion optical laminated board has better and more stable matt effect. Thus, the matt effect of the matte lampshade after secondary processing is better.

[0015] Optionally, the ratio of the sodium stearate, polyvinyl alcohol and epoxy ethane propane copolymer is 1:(0.5-2):(1-3).

[0016] The experiment found that when the ratio of sodium stearate, polyvinyl alcohol and oxirane propane copolymer is 1:(0.5-2):(1-3), the dispersion effect of styrene-butadiene rubber in HIPS is the best, and the extinction effect of the extinction PS diffusion optical laminated sheet is better and more stable. Therefore, the extinction effect of the secondary processed extinction lampshade is better.

[0017] Optionally, the heat stabilizer is selected from a combination of one or more of triphenyl phosphate, hexadecyl phosphate, dibutyl diphenyl phosphate, diisooctyl diphenyl phosphate, hexamethyl triammonium phosphate, and trimethyl phosphate.

[0018] By adopting the above technical solution, triphenyl phosphate, hexadecyl phosphate, dibutyl diphenyl phosphate, diisooctyl diphenyl phosphate, hexamethyl triammonium phosphate, and trimethyl phosphate can effectively reduce the risk of oxidation and decomposition reaction of styrene-butadiene rubber reacting with HIPS to generate cross-linked polymer particles at high temperature, improve the stability of the laminated A layer at high temperature, and thus prolong the service life of the extinction PS diffusion optical laminated sheet.

[0019] Optionally, the anti-aging agent is selected from a combination of bis(4-tert-butyl-m-phenylenediamine) methane, diphenyl disulfide, and 2-aminobenzophenone.

[0020] By adopting the above technical solution, bis(4-tert-butyl-m-phenylenediamine) methane can effectively prevent the formation of free radicals and polymerization reaction, delay the aging process of HIPS, diphenyl disulfide can react with free radicals in polystyrene to slow down the aging process, and 2-aminobenzophenone has the ability to absorb ultraviolet rays, which can prevent polystyrene from aging caused by ultraviolet radiation. Bis(4-tert-butyl-m-phenylenediamine) methane, diphenyl disulfide, and 2-aminobenzophenone can synergistically improve the anti-aging ability of the laminated A layer.

[0021] Optionally, the ratio of the total thickness of the laminated A layer to the total thickness of the laminated B layer is 1:(0.5-3).

[0022] By adopting the above technical solution, the ratio of the thickness of the laminated A layer to the thickness of the laminated B layer is 1:(0.5-3), and the extinction PS diffusion optical laminated sheet formed by laminating the laminated A layer and the laminated B layer has good extinction effect and good light transmission.

[0023] In a second aspect, the application provides a preparation method of an extinction PS diffusion optical laminated sheet, which adopts the following technical solution:

[0024] A preparation method of the extinction PS diffusion optical laminated sheet described above, comprising the following steps:

[0025] Preparation of A layer extrusion material: HIPS, styrene butadiene rubber, compatibilizer, chain extender, dispersant, heat stabilizer, anti-aging agent are added into a mixing blender in proportion and mixed uniformly;

[0026] Preparation of B layer extrusion material: GPPS, silicone diffuser are mixed uniformly in proportion by a blender;

[0027] Molding: the A layer extrusion material and the B layer extrusion material are simultaneously laminated and extruded by a double-layer plate laminating calender to form AB or ABA laminated plate.

[0028] By adopting the above technical scheme, the matt PS diffusion optical laminated plate can be prepared through the three steps of preparation of A layer extrusion material, preparation of B layer extrusion material and molding, and the process is simple, which is conducive to cost saving. In the molding step, the A layer extrusion material and the B layer extrusion material are simultaneously laminated and extruded by a double-layer plate laminating calender to form AB or ABA laminated plate, the plate is integrally formed, the laminated A layer and the laminated B layer can be tightly combined, and the prepared matt PS diffusion optical laminated plate has good quality.

[0029] Optionally, in the molding step, the molding temperature is 180-220℃, and the molding pressure is 5-12Mpa.

[0030] By adopting the above technical scheme, the molding temperature is 180-220℃, and the molding pressure is 5-12Mpa, and the molding effect is good.

[0031] In summary, the present application has the following advantages:

[0032] 1. The matt effect of the laminated A layer reaction in the present application reduces the surface gloss of the PS plate without affecting the light transmittance of the PS plate, and the material cost of the PS matt diffusion optical plate can be reduced through double-layer lamination, and the obtained PS matt diffusion optical plate has the advantages of good matt effect, adjustable light transmittance, more stable and uniform gloss, and higher toughness.

[0033] 2. The cross-linked polymer particles generated in the laminated A layer have a higher melting point, and when the matt PS diffusion optical laminated plate of the present application is heated, the cross-linked polymer particles in the lampshade obtained by blow molding still exist stably, the cross-linked polymer particles make the lampshade form an internal concave-convex feeling, thereby reducing the ability of the matt PS diffusion optical laminated plate surface to reflect light, reducing the interference of reflected light, and further making the matte lampshade surface present a matte effect, so that the reflectivity of the lampshade is low and the matte effect is good. Since the matte effect does not disappear from the matt PS diffusion optical laminated plate to the matte lampshade, there is no need to add additional process to achieve the matte effect, which simplifies the process and improves the yield;

[0034] 3、The application can control the degree of matting of the matting PS diffusion optical laminated sheet and the matting lampshade by controlling the amount of reactant and the reaction temperature in the production process, and the degree of matting of the matting PS diffusion optical laminated sheet and the matting lampshade can be adjusted.

[0035] 4、The matting PS diffusion optical laminated sheet can be prepared by the three steps of preparing the A layer extrusion material, preparing the B layer extrusion material and molding, and the process is simple and conducive to cost saving. In the molding step, the A layer extrusion material and the B layer extrusion material are simultaneously extruded by a double-layer sheet laminating calender to form an AB or ABA laminated sheet, and the laminated sheet is integrally formed. The laminated A layer and the laminated B layer can be tightly combined, and the matting PS diffusion optical laminated sheet prepared has good quality. DETAILED DESCRIPTION

[0036] The application will be further described below.

[0037] Raw material introduction

[0038] The following is the raw material introduction of Examples 1-3, Comparative Examples 1-6, Application Examples 1-3 and Comparative Application Examples 1-6.

[0039] Table 1 Raw material introduction

[0040]

[0041]

[0042] Examples

[0043] Example 1

[0044] The matt PS diffusion optical laminated plate material comprises a laminated A layer and a laminated B layer, and the laminated A layer comprises the following components in parts by weight: HIPS 85 parts, butadiene styrene rubber 4 parts, a compatibilizer 1 part, a chain extender 2 parts, a dispersing agent 0.30 part, a heat stabilizer 0.60 part, and an anti-aging agent 0.5 part; the compatibilizer is a combination of maleic anhydride grafted POE of type CH905, 4,4'-(hexafluoroisopropylidene) diphthalic anhydride, glycidyl methacrylate, and poly(2-ethyl-2-oxazoline), and the ratio of maleic anhydride grafted POE of type CH905, 4,4'-(hexafluoroisopropylidene) diphthalic anhydride, glycidyl methacrylate, and poly(2-ethyl-2-oxazoline) is 1:2:1:0.5; the chain extender is dichloroethane; the dispersing agent is a combination of sodium stearate, polyvinyl alcohol, and an ethylene oxide-propane copolymer, and the ratio of sodium stearate, polyvinyl alcohol, and an ethylene oxide-propane copolymer is 1:0.5:3; the heat stabilizer is a combination of triphenyl phosphate, hexadecyl phosphate, dibutyl diphenyl phosphate, diisooctyl diphenyl phosphate, hexamethyl triammonium phosphate, and trimethyl phosphate, and the ratio of triphenyl phosphate, hexadecyl phosphate, dibutyl diphenyl phosphate, diisooctyl diphenyl phosphate, hexamethyl triammonium phosphate, and trimethyl phosphate is 1:1:1:1:1:1; the anti-aging agent is a combination of bis(4-tert-butyl-m-phenylenediamine) methane, diphenyl disulfide, and 2-aminobenzophenone, and the ratio of bis(4-tert-butyl-m-phenylenediamine) methane, diphenyl disulfide, and 2-aminobenzophenone is 1:1.2:0.8; the laminated B layer comprises the following components in parts by weight: GPPS 99 parts and silicone diffusion agent 0.8 part. In the embodiment, the total thickness of the matt PS diffusion optical laminated plate material is 4 mm, and the ratio of the total thickness of the laminated A layer to the total thickness of the laminated B layer is 1:0.5.

[0045] The preparation method of the matt PS diffusion optical laminated plate material described above comprises the following steps:

[0046] Preparation of A layer extrusion material: HIPS, butadiene styrene rubber, compatibilizer, chain extender, dispersing agent, heat stabilizer, and anti-aging agent are added into a mixing stirrer in proportion and mixed and stirred uniformly;

[0047] Preparation of B layer extrusion material: GPPS and silicone diffusion agent are mixed and stirred uniformly in a stirrer in proportion;

[0048] Molding: the A layer extrusion material and the B layer extrusion material are simultaneously laminated and extruded through a double-layer plate laminating calender to form an ABA laminated plate, the molding temperature is 180℃, and the molding pressure is 12Mpa.

[0049] Example 2

[0050] The matt PS diffusion optical laminated plate material comprises a laminated A layer and a laminated B layer, and the laminated A layer comprises the following components in parts by weight: 95 parts of HIPS, 1 part of butadiene styrene rubber, 6 parts of a compatibilizer, 0.5 parts of a chain extender, 0.60 parts of a dispersing agent, 0.30 parts of a heat stabilizer, and 1 part of an anti-aging agent; the compatibilizer is a combination of a POE grafted with maleic anhydride of type CH905 and 4,4'-(hexafluoroisopropylidene) diphthalic anhydride, and the ratio of the POE grafted with maleic anhydride of type CH905 and 4,4'-(hexafluoroisopropylidene) diphthalic anhydride is 1:0.5; the chain extender is a combination of dichloroethane, dimethylbenzene, and acrylonitrile, and the ratio of dichloroethane, dimethylbenzene, and acrylonitrile is 1:1:1; the dispersing agent is a combination of sodium stearate, polyvinyl alcohol, and an ethylene oxide-propane copolymer; the ratio of sodium stearate, polyvinyl alcohol, and the ethylene oxide-propane copolymer is 1:2:1; the heat stabilizer is triphenyl phosphate; and the anti-aging agent is a combination of bis(4-tert-butyl-m-phenylenediamine) methane, diphenyl disulfide, and 2-aminobenzophenone, and the ratio of bis(4-tert-butyl-m-phenylenediamine) methane, diphenyl disulfide, and 2-aminobenzophenone is 1:0.5:0.6; the laminated B layer comprises the following components in parts by weight: 98 parts of GPPS and 2 parts of an organic silicon diffusion agent.

[0051] The preparation method of the matt PS diffusion optical laminated plate material comprises the following steps:

[0052] Preparation of the A layer extrusion material: the HIPS, butadiene styrene rubber, compatibilizer, chain extender, dispersing agent, heat stabilizer, and anti-aging agent are added into a mixing stirrer in proportion and mixed and stirred uniformly;

[0053] Preparation of the B layer extrusion material: the GPPS and organic silicon diffusion agent are mixed and stirred uniformly in a stirrer in proportion;

[0054] Molding: the A layer extrusion material and the B layer extrusion material are simultaneously laminated and extruded through a double-layer plate laminating calender to form an AB laminated plate, the molding temperature is 220℃, and the molding pressure is 5Mpa.

[0055] Example 3

[0056] The matt PS diffusion optical laminated plate material comprises a laminated A layer and a laminated B layer, and the laminated A layer comprises the following components in parts by weight: 90 parts of HIPS, 2.5 parts of butadiene-styrene rubber, 3.5 parts of a compatibilizer, 1.5 parts of a chain extender, 0.45 parts of a dispersant, 0.45 parts of a heat stabilizer, and 0.6 parts of an anti-aging agent; the compatibilizer is CH905 maleic anhydride grafted POE; the chain extender is a combination of dimethylbenzene and acrylonitrile, and the ratio of dimethylbenzene to acrylonitrile is 1:2; the dispersant is a combination of sodium stearate, polyvinyl alcohol, and an ethylene oxide-propane copolymer, and the ratio of sodium stearate to polyvinyl alcohol to the ethylene oxide-propane copolymer is 1:1.3:2; the heat stabilizer is a combination of cetyl phosphate and dibutyl diphenyl phosphate, and the ratio of cetyl phosphate to dibutyl diphenyl phosphate is 1:1; and the anti-aging agent is a combination of bis(4-tert-butyl-m-phenylenediamine) methane, diphenyl disulfide, and 2-aminobenzophenone, and the ratio of bis(4-tert-butyl-m-phenylenediamine) methane to diphenyl disulfide to 2-aminobenzophenone is 1:1:1. The laminated B layer comprises the following components in parts by weight: 98.5 parts of GPPS and 1.4 parts of an organic silicon diffusion agent. In the embodiment, the total thickness of the matt PS diffusion optical laminated plate material is 4 mm, and the ratio of the total thickness of the laminated A layer to the total thickness of the laminated B layer is 1:1.5.

[0057] The preparation method of the matt PS diffusion optical laminated plate material comprises the following steps:

[0058] Preparation of the A layer extrusion material: the HIPS, butadiene-styrene rubber, compatibilizer, chain extender, dispersant, heat stabilizer, and anti-aging agent are added into a mixing stirrer in proportion and mixed and stirred uniformly;

[0059] Preparation of the B layer extrusion material: the GPPS and organic silicon diffusion agent are mixed and stirred uniformly in a stirrer in proportion;

[0060] Molding: the A layer extrusion material and the B layer extrusion material are simultaneously laminated and extruded through a double-layer plate laminating calender to form an AB laminated plate, the molding temperature is 200 DEG C, and the molding pressure is 8.5 MPa.

[0061] Implementation of the comparative example

[0062] Implementation of the comparative example 1

[0063] The matt PS plate material comprises the following components in parts by weight: HIPS 90 parts, talcum powder 2.5 parts, compatibility agent 3.5 parts, chain extender 1.5 parts, dispersing agent 0.45 parts, heat stabilizer 0.45 parts, and anti-aging agent 0.6 parts; the compatibility agent is maleic anhydride grafted POE with model CH905; the chain extender is a combination of dimethylbenzene and acrylonitrile, and the ratio of dimethylbenzene to acrylonitrile is 1:2; the dispersing agent is a combination of sodium stearate, polyvinyl alcohol and ethylene oxide propane copolymer, and the ratio of sodium stearate to polyvinyl alcohol to ethylene oxide propane copolymer is 1:1.3:2; the heat stabilizer is a combination of hexadecyl phosphate and dibutyl diphenyl phosphate, and the ratio of hexadecyl phosphate to dibutyl diphenyl phosphate is 1:1; and the anti-aging agent is a combination of bis(4-tert-butyl-m-phenylenediamine) methane, diphenyl disulfide and 2-aminobenzophenone, and the ratio of bis(4-tert-butyl-m-phenylenediamine) methane to diphenyl disulfide to 2-aminobenzophenone is 1:1:1.

[0064] The preparation method of the matt PS plate material comprises the following steps:

[0065] Preparation of the mixture: HIPS, talcum powder, compatibility agent, chain extender, dispersing agent, heat stabilizer and anti-aging agent are added into a mixing stirrer in proportion and mixed and stirred uniformly to obtain the mixture;

[0066] Molding: the mixture is extruded and calendered into the matt PS plate material with a thickness of 4 mm by a calendering machine, the molding temperature is 200℃, and the molding pressure is 8.5Mpa.

[0067] Implementation of Comparative Example 2

[0068] The matt PS plate material comprises the following components in parts by weight: HIPS 90 parts, polycarbonate particles 2.5 parts, compatibility agent 3.5 parts, chain extender 1.5 parts, dispersing agent 0.45 parts, heat stabilizer 0.45 parts, and anti-aging agent 0.6 parts; the compatibility agent is maleic anhydride grafted POE with model CH905; the chain extender is a combination of dimethylbenzene and acrylonitrile, and the ratio of dimethylbenzene to acrylonitrile is 1:2; the dispersing agent is a combination of sodium stearate, polyvinyl alcohol and ethylene oxide propane copolymer, and the ratio of sodium stearate to polyvinyl alcohol to ethylene oxide propane copolymer is 1:1.3:2; the heat stabilizer is a combination of hexadecyl phosphate and dibutyl diphenyl phosphate, and the ratio of hexadecyl phosphate to dibutyl diphenyl phosphate is 1:1; and the anti-aging agent is a combination of bis(4-tert-butyl-m-phenylenediamine) methane, diphenyl disulfide and 2-aminobenzophenone, and the ratio of bis(4-tert-butyl-m-phenylenediamine) methane to diphenyl disulfide to 2-aminobenzophenone is 1:1:1.

[0069] The preparation method of the matt PS plate material comprises the following steps:

[0070] Preparation of the mixture: HIPS, polycarbonate particles, compatibilizer, chain extender, dispersant, heat stabilizer, anti-aging agent are added into the mixing blender in proportion and mixed evenly to obtain the mixture;

[0071] Molding: the mixture is extruded and calendered into a matt PS plate with a thickness of 4 mm by a calendering machine, the molding temperature is 200℃, and the molding pressure is 8.5Mpa.

[0072] Example 3

[0073] A matt PS plate, by weight, comprises the following components: HIPS 90 parts, heat stabilizer 0.45 parts, anti-aging agent 0.6 parts; the heat stabilizer is selected from the combination of cetyl phosphate and dibutyl diphenyl phosphate, the ratio of cetyl phosphate and dibutyl diphenyl phosphate is 1:1; the anti-aging agent is selected from the combination of bis(4-tert-butyl-m-phenylenol) methane, diphenyl disulfide, and 2-aminobenzophenone, the ratio of bis(4-tert-butyl-m-phenylenol) methane, diphenyl disulfide, and 2-aminobenzophenone is 1:1:1.

[0074] The preparation method of the above-mentioned matt PS plate comprises the following steps:

[0075] Preparation of the mixture: HIPS, heat stabilizer, anti-aging agent are added into the mixing blender in proportion and mixed evenly to obtain the mixture;

[0076] Molding: the mixture is extruded and calendered into a matt PS plate with a thickness of 4 mm by a calendering machine, the molding temperature is 200℃, and the molding pressure is 8.5Mpa.

[0077] Example 4

[0078] The difference between Example 4 and Example 3 is that inorganic matte particles are used instead of styrene-butadiene rubber in the coating A layer, and the inorganic matte particles are selected from talc.

[0079] Example 5

[0080] The difference between Example 5 and Example 3 is that organic matte particles are used instead of styrene-butadiene rubber in the coating A layer, and the organic matte particles are selected from polycarbonate particles.

[0081] Example 6

[0082] The difference between Example 6 and Example 3 is that no styrene-butadiene rubber is added in the coating A layer.

[0083] Application Example

[0084] Application Example 1

[0085] The mat PS diffusion optical laminated sheet material of Application Example 1 was heated and blow molded into a lampshade.

[0086] Application Example 2

[0087] The mat PS diffusion optical laminated sheet material of Application Example 2 was heated and blow molded into a lampshade.

[0088] Application Example 3

[0089] The mat PS diffusion optical laminated sheet material of Application Example 1 was heated and blow molded into a lampshade.

[0090] Application Comparative Example

[0091] Application Comparative Example 1

[0092] The mat PS sheet material of Application Comparative Example 1 was heated and blow molded into a lampshade.

[0093] Application Comparative Example 2

[0094] The mat PS sheet material of Application Comparative Example 2 was heated and blow molded into a lampshade.

[0095] Application Comparative Example 3

[0096] The mat PS sheet material of Application Comparative Example 3 was heated and blow molded into a lampshade.

[0097] Application Comparative Example 4

[0098] The mat PS diffusion optical laminated sheet material of Application Comparative Example 4 was heated and blow molded into a lampshade.

[0099] Application Comparative Example 5

[0100] The mat PS diffusion optical laminated sheet material of Application Comparative Example 5 was heated and blow molded into a lampshade.

[0101] Application Comparative Example 6

[0102] The mat PS diffusion optical laminated sheet material of Application Comparative Example 6 was heated and blow molded into a lampshade.

[0103] Performance Test

[0104] (1) The sheet materials of Examples 1-3 and Comparative Examples 1-6 were tested for mechanical properties and optical properties.

[0105] The mechanical properties of the sheet materials were tested for tensile strength, bending modulus, and notched impact strength. The optical properties of the sheet materials were tested for gloss, light transmittance, and uniformity of matting.

[0106] Tensile strength was tested according to GB / T 1040-2006 "Determination of tensile properties of plastics" at a tensile speed of 100 mm / min.

[0107] Flexural modulus: tested according to GB / T9341-2008 "Determination of flexural properties of plastics", the flexural speed is 2mm / min.

[0108] Notched impact strength: tested according to GB / T1043-2008 "Determination of Izod impact properties of plastics", the sample notch is processed according to ISO2818:1994, the notch type is A type notch, the notch bottom radius is 0.25mm, and the notch bottom remaining width is 8mm.

[0109] Gloss: the gloss tester is used to test the gloss of the matte surface according to GB / T8807-1988 "Test method of specular gloss of plastics".

[0110] Transmittance: tested according to GB / T2410-2008 "Determination of transmittance and haze of transparent plastics".

[0111] Matte uniformity determination: the surface of the plate is observed with naked eyes to determine whether the matte is uniform.

[0112] (2) The lampshade of application examples 1-3 and application comparative examples 1-6 is subjected to mechanical property and optical property tests.

[0113] The mechanical property test of the lampshade includes impact test and elasticity test. The optical property test of the lampshade includes gloss test, transmittance test, and matte uniformity determination.

[0114] Impact test: a 0.35J impact hammer is used to impact the thinnest part of the lampshade for 3 times, and whether the shell is damaged is observed.

[0115] Elasticity test: the top center of the lampshade is pressed by hand, the lampshade is concave, and whether the lampshade returns to the original shape or is damaged is observed after the hand is removed.

[0116] Gloss: tested according to GB / T8807-1988 "Test method of specular gloss of plastics".

[0117] Transmittance: tested according to GB / T2410-2008 "Determination of transmittance and haze of transparent plastics".

[0118] Matte uniformity determination: the surface of the plate is observed with naked eyes to determine whether the matte is uniform.

[0119] The test results are as follows:

[0120] Table 2 is the test results of the plate. Table 3 is the test results of the lampshade.

[0121] Table 2 is the test results of the plate of examples 1-3 and comparative examples 1-6.

[0122] Table 3 Test results of lampshade of application examples 1-3 and application comparative examples 1-6

[0123]

[0124] Comparing application examples 1-3 with application comparative example 1, the tensile strength of application examples 1-3 is obviously greater than that of application comparative example 1, the bending modulus of application examples 1-3 is obviously greater than that of application comparative example 1, and the notched impact strength of application examples 1-3 is obviously greater than that of application comparative example 1, which indicates that the mechanical properties, especially the toughness, of application examples 1-3 are obviously superior to those of application comparative example 1. The glossiness of application examples 1-3 is all below 6GU. The glossiness of application comparative example 1 is 9GU, and both application examples 1-3 and application comparative example 1 have good matte effects. However, the light transmittance of application examples 1-3 is obviously higher than that of application comparative example 1, and the matte of application examples 1-3 is uniform, while the matte of application comparative example 1 is not uniform. This may be because the inorganic matte particles are heavy in weight, and the inorganic matte particles are not compatible with the PS substrate, which affects the mechanical properties, such as toughness, of the plate. Moreover, the light transmittance of the inorganic matte particles is not adjustable, and too many inorganic matte particles will affect the light transmittance. The extinction PS diffusion optical laminated plate of the present application can reduce the glossiness of the plate surface without affecting the light transmittance, has good extinction effect, and has the advantages of more stable and uniform glossiness and higher toughness.

[0125] Comparing application examples 1-3 with application comparative example 1, application examples 1-3 are not damaged in impact test, and can restore to original shape and are not damaged in elasticity test, while application comparative example 1 is damaged in impact test and elasticity test, and cannot restore to original shape. The optical properties of application examples 1-3 and application comparative example 1 are the same before and after secondary processing into lampshades. This indicates that the extinction effect of the extinction PS diffusion optical laminated plate of the present application is still good when it is secondary processed into a lampshade, which is because the crosslinked polymer particles generated by reaction in the laminated A layer have a higher melting point. When the extinction PS diffusion optical laminated plate of the present application is heated during secondary processing, the crosslinked polymer particles in the blow-molded lampshade still exist stably. The crosslinked polymer particles make the lampshade form an internal concave-convex feeling, thereby reducing the ability of the surface of the extinction PS diffusion optical laminated plate to reflect light, reducing the interference of reflected light, and further making the surface of the matte lampshade present a matte effect, so that the reflectivity of the lampshade is low and the matte effect is good.

[0126] Comparing Example 1-3 with Comparative Example 2, the tensile strength of Example 1-3 is obviously greater than that of Comparative Example 2, the bending modulus of Example 1-3 is obviously greater than that of Comparative Example 2, and the notched impact strength of Example 1-3 is obviously greater than that of Comparative Example 2, indicating that the mechanical properties, especially the toughness, of Example 1-3 are obviously superior to those of Comparative Example 2. The gloss of Example 1-3 is all below 6GU. The gloss of Comparative Example 2 is 9GU, and both Example 1-3 and Comparative Example 2 have good matte effects, and the matte effects are uniform, but the light transmittance of Comparative Example 2 is lower than that of Example 1-3. It is indicated that the organic matte particles also have an adverse effect on the light transmittance of the plate.

[0127] Comparing Application Example 1-3 with Comparative Application Example 2, the lampshade matte effect of Comparative Application Example 2 is not uniform, which may be due to the uneven distribution of the organic matte particles in the lampshade during the secondary processing into the lampshade. However, the cross-linked polymer particles of the present application are generated by reaction, and during the secondary processing into the lampshade, the cross-linked polymer particles are still uniformly distributed, and the matte effect is still good.

[0128] Comparing Example 1-3 with Comparative Example 3, the tensile strength, bending modulus, and notched impact strength of Example 1-3 and Comparative Example 3 are not much different, indicating that the mechanical properties, especially the toughness, of Example 1-3 and Comparative Example 3 are both good. Moreover, the matte effect of Comparative Example 3 is also good, the matte is uniform, and the light transmittance is also high.

[0129] However, comparing Application Example 1-3 with Comparative Application Example 3, it can be found that after the plate is secondarily processed into a lampshade, the matte effect of Comparative Application Example 3 is obviously deteriorated, which may be due to the collapse of the structure during heating, which easily leads to the disappearance of the stripe part.

[0130] Comparing Example 1-3 with Comparative Example 4, the mechanical properties and optical properties of Example 1-3 are superior to those of Comparative Example 4, indicating that inorganic matte particles cannot replace styrene-butadiene rubber, and talc cannot react with HIPS to generate cross-linked polymer particles, thereby improving the mechanical properties and optical properties of the plate.

[0131] Comparing Application Example 1-3 with Comparative Application Example 4, it is indicated that inorganic matte particles cannot replace styrene-butadiene rubber, and inorganic matte particles, i.e., talc, cannot react with HIPS to generate cross-linked polymer particles, thereby making the lampshade after secondary processing still have good mechanical properties and optical properties.

[0132] Comparing Example 1-3 with Comparative Example 5, the mechanical properties and optical properties of Example 1-3 are superior to those of Comparative Example 4, indicating that organic matte particles cannot replace styrene-butadiene rubber, and polycarbonate particles cannot react with HIPS to generate cross-linked polymer particles, thereby improving the mechanical properties and optical properties of the plate.

[0133] Comparing application examples 1-3 with application comparative example 5, it is illustrated that organic matte particles cannot replace styrene-butadiene rubber, polycarbonate particles cannot react with HIPS to form cross-linked polymer particles, and further the lampshade after secondary processing still has good mechanical properties and optical properties.

[0134] Comparing examples 1-3 with implementation comparative example 6, the mechanical properties and optical properties of examples 1-3 are better than those of implementation comparative example 6, which illustrates that styrene-butadiene rubber plays an important role in the mechanical properties and optical properties of the plate, and styrene-butadiene rubber can react with HIPS to form cross-linked polymer particles, and further improve the mechanical properties and optical properties of the plate.

[0135] Comparing application examples 1-3 with application comparative example 6, styrene-butadiene rubber plays an important role in the mechanical properties and optical properties of the lampshade, and styrene-butadiene rubber can react with HIPS to form cross-linked polymer particles, and further the lampshade after secondary processing still has good mechanical properties and optical properties.

[0136] The above specific embodiments are only an explanation of the present application, and are not a limitation of the present application, and those skilled in the art can make modifications to the present application without creative contribution after reading the present specification, but all should be covered in the protection scope of the present application.

Claims

1. A matte PS diffusion optical composite material, characterized in that, The product includes a composite layer A and a composite layer B. The composite layer A, by weight, comprises the following components: 85-95 parts HIPS, 1-4 parts styrene-butadiene rubber, 1-6 parts compatibilizer, 0.5-2 parts chain extender, 0.30-0.60 parts dispersant, 0.30-0.60 parts heat stabilizer, and 0.5-1 parts anti-aging agent. The composite layer B, by weight, comprises the following components: 98-99 parts GPPS and 0.8-2 parts silicone dispersant.

2. The matting PS diffusion optical composite material according to claim 1, characterized in that: The compatibilizer is selected from one or more combinations of maleic anhydride grafted with POE, 4,4'-(hexafluoroisopropene)phthalic anhydride, glycidyl methacrylate, and poly(2-ethyl-2-oxazoline) of model CH905.

3. The matting PS diffusion optical composite material according to claim 1, characterized in that: The chain extender is selected from one or more of dichloroethane and acrylonitrile.

4. The matting PS diffusion optical composite material according to claim 1, characterized in that: The dispersant is a combination of sodium stearate, polyvinyl alcohol, and ethylene oxide-propane copolymer.

5. The matting PS diffusion optical composite material according to claim 4, characterized in that: The ratio of sodium stearate, polyvinyl alcohol, and ethylene oxide propane copolymer is 1:(0.5-2):(1-3).

6. The matting PS diffusion optical composite material according to claim 1, characterized in that: The heat stabilizer is selected from one or more of the following: triphenyl phosphate, hexadecyl phosphate, diphenyl dibutyl phosphate, diphenyl diisooctyl phosphate, hexamethyl triphosphate, and trimethyl phosphate.

7. The matting PS diffusion optical composite material according to claim 1, characterized in that: The anti-aging agent is a combination of bis(4-tert-butylresorcinol)methane, diphenyl disulfide, and 2-aminobenzophenone.

8. The matting PS diffusion optical composite material according to claim 1, characterized in that: The ratio of the total thickness of the composite A layer to the total thickness of the composite B layer is 1:(0.5~3).

9. A method for preparing an extinction PS diffusion optical composite material according to any one of claims 1 to 8, characterized in that: It includes the following steps: Preparation of A-layer extrusion material: HIPS, styrene-butadiene rubber, compatibilizer, chain extender, dispersant, heat stabilizer, and anti-aging agent are added to a mixer in proportion and mixed evenly; Preparation of B-layer extrusion material: Mix GPPS and organosilicon dispersant in a mixer according to the specified ratio until homogeneous; Molding: The A-layer extrusion material and the B-layer extrusion material are simultaneously laminated and extruded through a double-layer sheet lamination calender to form AB or ABA laminated sheets.

10. The method for preparing the matte PS diffusion optical composite material according to claim 9, characterized in that: In the molding step, the molding temperature is 180-220℃ and the molding pressure is 5-12 MPa.

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