CN104109383A - Light scattering agent with high light transmission and high haze used for PP and light scattering PP material prepared by light scattering agent - Google Patents
Light scattering agent with high light transmission and high haze used for PP and light scattering PP material prepared by light scattering agent Download PDFInfo
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- CN104109383A CN104109383A CN201410292543.5A CN201410292543A CN104109383A CN 104109383 A CN104109383 A CN 104109383A CN 201410292543 A CN201410292543 A CN 201410292543A CN 104109383 A CN104109383 A CN 104109383A
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- 238000000149 argon plasma sintering Methods 0.000 title claims abstract description 66
- 239000000463 material Substances 0.000 title claims abstract description 40
- 230000005540 biological transmission Effects 0.000 title abstract description 4
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 75
- 239000002245 particle Substances 0.000 claims abstract description 74
- -1 polysiloxane Polymers 0.000 claims abstract description 73
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 108
- 238000007710 freezing Methods 0.000 claims description 39
- 230000008014 freezing Effects 0.000 claims description 39
- 238000009792 diffusion process Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 16
- 239000006096 absorbing agent Substances 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 14
- 239000003595 mist Substances 0.000 claims description 12
- PWGJDPKCLMLPJW-UHFFFAOYSA-N 1,8-diaminooctane Chemical compound NCCCCCCCCN PWGJDPKCLMLPJW-UHFFFAOYSA-N 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 8
- 238000007639 printing Methods 0.000 claims description 8
- JBIROUFYLSSYDX-UHFFFAOYSA-M benzododecinium chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 JBIROUFYLSSYDX-UHFFFAOYSA-M 0.000 claims description 7
- 150000002148 esters Chemical class 0.000 claims description 7
- 230000009514 concussion Effects 0.000 claims description 6
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 6
- 230000002745 absorbent Effects 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 230000035939 shock Effects 0.000 abstract description 5
- 238000000889 atomisation Methods 0.000 abstract description 2
- 230000003064 anti-oxidating effect Effects 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 abstract 1
- 239000004743 Polypropylene Substances 0.000 description 45
- 230000000052 comparative effect Effects 0.000 description 21
- 238000011056 performance test Methods 0.000 description 8
- 230000032683 aging Effects 0.000 description 7
- 238000002834 transmittance Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 4
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- 238000005286 illumination Methods 0.000 description 3
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- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920000548 poly(silane) polymer Polymers 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention discloses a light scattering agent with high light transmission and high haze used for PP, which comprises the following raw materials of frozen fine crushing polysiloxane particles, a light scattering agent 1), a light scattering agent 2 and a compatilizer. According to the invention, low temperature refrigeration and supersonic wave crushing are combined, polysiloxane particles sold in the market are conversed to the low temperature micro crushing polysiloxane particles, and then added in the PP material, PP material can obtain the excellent atomization effect; the low temperature micro crushing polysiloxane particles can overcome the influence of current organosilicon light scattering agents to the PP material performance, so that the prepared light scattering PP material can keep excellent shock resistance, antioxidation and treatment thermal stability.
Description
Technical field
The present invention relates to technical field of polymer materials, be specifically related to light diffusing agent and the light prepared therefrom diffusion PP for PP of the high mist degree of a kind of high printing opacity.
Background technology
Photodiffusion material refers to point, line source to be changed into the material of line, area source, it is general by the light diffusion particle from the different specific refractions of base material is dispersed in transparent substrate and is prepared, be used in early days the backlight source material of liquid-crystal display, be called again light-scattering material or diffusion material.By photodiffusion material, for photodiode (LED) illumination, be a new Application Areas of opening up in recent years.LED illumination is stronger compared with liquid crystal backlight, and fill light linearity can be higher; The photodiffusion material throwing light on for LED, in diffusion light, must reduce light loss as far as possible, and have good toughness.At present, the light that has generally using spreads PC, PMMA and PS etc.PP(polypropylene) material is compared PC, PMMA cost is low, and proportion is low.Some kind light transmission is good simultaneously, and resistance to chemical attack is easy to process.Existing employing has the PP material (polymethylmethacrylate) of high mist degree as matrix, with blending method, silicone based light scattering agent is prepared into it to the light transmissive material for LED illuminating product.This material is all having good performance aspect transmittance and specific refractory power, but the indexs such as the ageing resistance of material, resistance to impact shock, hot-work stability are all subject to certain impact.Under hot conditions, work long hours, existing light diffusion PP material easily aging and become fragile, resistance to impact shock declines, transparence declines, and finally makes product rejection.When silicone based light scattering agent consumption is higher, the problems referred to above show more obviously, and organosilicon light diffusing agent consumption is too low, likely causes decline or the disappearance of light scattering effect.
Summary of the invention
In view of this, the present invention discloses a kind of light diffusing agent that can make PP material possess stable high transmission rate and high atomization degree.
Object of the present invention is achieved through the following technical solutions: the PP light diffusing agent of the high mist degree of a kind of high printing opacity, and its raw material comprises following component by weight:
40～70 parts of freezing Crushing of Ultrafine polysiloxane particles;
1 1～5 parts of light scattering agents;
2 5～10 parts of light scattering agents;
0.1～1 part of compatilizer;
Wherein, described light scattering agent 1 is diacetone-acryloamide(DAA); Described light scattering agent 2 is 1,8-octamethylenediamine; Described compatilizer comprises and accounts for the dodecyl benzyl dimethyl ammonium chloride of its gross weight 5-15% and the phthalic ester of surplus; The polysiloxane particle that it is 2 μ m that described freezing Crushing of Ultrafine polysiloxane particle refers to median size is cooled to after-10 ℃～-20 ℃, the polysiloxane particle obtaining with the ultrasonic grinding of 60-100KHz.
Described polysiloxane particle is commercially available polysiloxane particle product.Designer finds, under low temperature environment, polysiloxane particle is carried out to ultrasonic grinding, can make granule interior produce many tiny slight cracks.By in these fine cracks, will there is repeatedly refraction in light, the final effect that improves its fogging degree that realizes.This atomizing effect must adopt the polysiloxane particle after freezing and pulverizing to realize.Transmittance above-mentioned but this freezing Crushing of Ultrafine polysiloxane particle declines comparatively serious, when designer is surprised to find that in described crack the light scattering agent 1 that has described in full and light scattering agent 2, can fill up fine cracks as the medium of conducting light, thereby significantly promote the transmittance of above-mentioned freezing Crushing of Ultrafine polysiloxane particle, reduce its light loss.Described light scattering agent 1 is diacetone-acryloamide(DAA), is commercially available prod.Described light scattering agent 2 is commercially available 1,8-octamethylenediamine.For improving light scattering agent 1, the stability of light scattering agent 2 in freezing Crushing of Ultrafine polysiloxane particle, the present invention uses the compatilizer being comprised of dodecyl benzyl dimethyl ammonium chloride and phthalic ester simultaneously, it can improve freezing Crushing of Ultrafine polysiloxane particle, diacetone-acryloamide(DAA) and 1, combination degree between 8-octamethylenediamine, make three form stable system, under high light, hot conditions, still do not occur aging.
The present invention also provides a kind of method of preparing described light diffusing agent, comprise following operation: polysiloxane particle is cooled to-10 ℃～-20 ℃, keep after 2min～5min, proportion is that the ultrasonic wave of 60～100KHz is pulverized 15min～20min, makes described freezing Crushing of Ultrafine polysiloxane particle;
After described light scattering agent 1 and compatilizer are mixed, add described freezing Crushing of Ultrafine polysiloxane particle, adopt rotary shaking table with rotating speed concussion 30～40min of 200～400 turn/min; Add described light scattering agent 2 to make the two and be uniformly mixed 15～30min at 50～60 ℃, and make it to be cooled to 1 ℃ of ﹣ 5～﹣ in 0.5～1min, at 30～40 ℃, drying 20～30min, making described light diffusing agent.
The present invention adds described freezing Crushing of Ultrafine polysiloxane particle after first described light scattering agent 1 and compatilizer being mixed, and makes light scattering agent 1 and compatilizer enter the gap of described freezing Crushing of Ultrafine polysiloxane particle.Then add described light scattering agent 2 to make the two and be uniformly mixed at 50～60 ℃, after light diffusing agent is softening, can enter the gap of described freezing Crushing of Ultrafine polysiloxane particle, being wrapped in light scattering agent 1 outside.And making it to be cooled to 1 ℃ of ﹣ 5～﹣ in 0.5～1min, cooling fast can make light scattering agent 2 again solidify, and prevents 1 escape of liquid light scattering agent, and then improves the stability of light diffusing agent.And light scattering agent 1, light scattering agent 2 and freezing Crushing of Ultrafine polysiloxane particle are in fact to have formed a system that comprises the three-phase of polysiloxane phase, 1,8 octamethylenediamine phase, diacetone-acryloamide(DAA) phase.A light alternate repeatedly refraction repeatedly that enters freezing Crushing of Ultrafine polysiloxane particle, there is larger deflection in the angle of final emergent ray.And the repeatedly refraction of light also can make through the light of prepared light diffusion PP diffusion softlyer, show good light sensation.
The present invention also provides a kind of light diffusion PP material, and its raw material packet contains light diffusing agent as claimed in claim 1.
Its raw material comprises following component by weight:
30～40 parts of PP;
5～15 parts of light diffusing agents;
1～5 part of toughner;
0.2～0.5 part of UV light absorber.
Described toughner is polyolefin elastomer class toughner; Described UV light absorber is ultraviolet absorbent UV-531.
Described toughner can be selected any commercially available polyolefin elastomer class toughner, such as POE 8150, this type of toughner and PP, light diffusing agent all have good consistency.Can prevent light diffusing agent from reuniting, precipitating and cannot fully mix with PP.Described UV light absorber is UV-531, is commercially available prod.UV light absorber can strengthen the ageing resistance of PP and light diffusing agent simultaneously, prevents prepared light diffusion PP under strong illumination and aging, is conducive to extend the work-ing life of light diffusion PP.Light diffusion PP material of the present invention can be used any published blending method preparation.
The present invention, with respect to prior art, has following beneficial effect:
1. the present invention adopts the method for cryogenic freezing and ultrasonic grinding, and commercially available polysiloxane particle is converted into the broken polysiloxane particle of low-temperature fine powder, and it is added in PP material, can make PP material obtain outstanding atomizing effect; Simultaneously the broken polysiloxane particle of low-temperature fine powder of the present invention has also overcome the impact of existing silicone based light diffusing agent on PP material property, makes the prepared light diffusion of the present invention PP material can keep the performances such as outstanding shock resistance, processing heat stability.
2. the present invention has selected light scattering agent 1, light scattering agent 2 to be filled in the gap of the broken polysiloxane particle of low-temperature fine powder, solve the larger problem of the broken polysiloxane particle light loss of low-temperature fine powder, make the PP material that is added with light diffusing agent of the present invention can keep higher transparence.The present invention is simultaneously defined as octamethylenediamine and diacetone-acryloamide(DAA) to the kind of light scattering agent 1, light scattering agent, the two can form stable three-phase system under the effect of compatilizer, light, in the repeatedly refraction of three alternate generation random directions, has further improved the atomizing effect of light diffusing agent.The method of the employing octamethylenediamine parcel diacetone-acryloamide(DAA) of the present invention's design can effectively prevent liquid diacetone-acryloamide(DAA) escape, is conducive to maintain the stability of light diffusing agent.
3. light provided by the invention spreads PP material, the type of its feed composition and consumption are all optimized for the performance of light diffusing agent of the present invention, guarantee that light diffusing agent can evenly, stably be present in PP material, and be that the light diffusion PP material that finally makes has good shock resistance, higher thermostability and outstanding processing characteristics, ageing resistance etc.
Embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1
The present embodiment provides the PP light diffusing agent of the high mist degree of a kind of high printing opacity, and its raw material comprises following component by weight:
55 parts of freezing Crushing of Ultrafine polysiloxane particles;
14 parts of light scattering agents;
27 parts of light scattering agents;
0.8 part of compatilizer;
Wherein, described light scattering agent 1 is diacetone-acryloamide(DAA); Described light scattering agent 2 is 1,8-octamethylenediamine; Described compatilizer comprises and accounts for the dodecyl benzyl dimethyl ammonium chloride of its gross weight 9% and the phthalic ester of surplus; The polysiloxane particle that it is 2 μ m that described freezing Crushing of Ultrafine polysiloxane particle refers to median size is cooled to after-15 ℃, the polysiloxane particle obtaining with the ultrasonic grinding of 70KHz.
The present embodiment provides a kind of method of preparing above-mentioned light diffusing agent simultaneously, comprise following operation: polysiloxane particle is cooled to-15 ℃, keep after 4min, the ultrasonic wave that proportion is 70KHz is pulverized 18min, makes described freezing Crushing of Ultrafine polysiloxane particle;
After described light scattering agent 1 and compatilizer are mixed, add described freezing Crushing of Ultrafine polysiloxane particle, adopt rotary shaking table with rotating speed concussion 30～40min of 350 turn/min; Add described light scattering agent 2 to make the two and be uniformly mixed 20min at 55 ℃, and make it to be cooled to 2 ℃ of ﹣ in 1min, at 35 ℃, drying 25min, making described light diffusing agent.
Embodiment 2
The present embodiment provides the PP light diffusing agent of the high mist degree of a kind of high printing opacity, and its raw material comprises following component by weight:
40 parts of freezing Crushing of Ultrafine polysiloxane particles;
15 parts of light scattering agents;
25 parts of light scattering agents;
1 part of compatilizer;
Wherein, described light scattering agent 1 is diacetone-acryloamide(DAA); Described light scattering agent 2 is 1,8-octamethylenediamine; Described compatilizer comprises and accounts for the dodecyl benzyl dimethyl ammonium chloride of its gross weight 5% and the phthalic ester of surplus; The polysiloxane particle that it is 2 μ m that described freezing Crushing of Ultrafine polysiloxane particle refers to median size is cooled to after-20 ℃, the polysiloxane particle obtaining with the ultrasonic grinding of 60KHz.
The present embodiment provides a kind of method of preparing above-mentioned light diffusing agent simultaneously, comprise following operation: polysiloxane particle is cooled to-20 ℃, keep after 2min, the ultrasonic wave that proportion is 60KHz is pulverized 15min, makes described freezing Crushing of Ultrafine polysiloxane particle;
After described light scattering agent 1 and compatilizer are mixed, add described freezing Crushing of Ultrafine polysiloxane particle, adopt rotary shaking table with the rotating speed concussion 30min of 400 turn/min; Add described light scattering agent 2 to make the two and be uniformly mixed 15min at 60 ℃, and make it to be cooled to 5 ℃ of ﹣ in 1min, at 40 ℃, drying 20min, making described light diffusing agent.
Embodiment 3
The present embodiment provides the PP light diffusing agent of the high mist degree of a kind of high printing opacity, and its raw material comprises following component by weight:
70 parts of freezing Crushing of Ultrafine polysiloxane particles;
11 parts of light scattering agents;
2 10 parts of light scattering agents;
0.1 part of compatilizer;
Wherein, described light scattering agent 1 is diacetone-acryloamide(DAA); Described light scattering agent 2 is 1,8-octamethylenediamine; Described compatilizer comprises and accounts for the dodecyl benzyl dimethyl ammonium chloride of its gross weight 15% and the phthalic ester of surplus; The polysiloxane particle that it is 2 μ m that described freezing Crushing of Ultrafine polysiloxane particle refers to median size is cooled to after-10 ℃, the polysiloxane particle obtaining with the ultrasonic grinding of 100KHz.
The present embodiment provides a kind of method of preparing above-mentioned light diffusing agent simultaneously, comprise following operation: polysiloxane particle is cooled to-10 ℃, keep after 5min, the ultrasonic wave that proportion is 100KHz is pulverized 20min, makes described freezing Crushing of Ultrafine polysiloxane particle;
After described light scattering agent 1 and compatilizer are mixed, add described freezing Crushing of Ultrafine polysiloxane particle, adopt rotary shaking table with the rotating speed concussion 40min of 200 turn/min; Add described light scattering agent 2 to make the two and be uniformly mixed 15～30min at 50 ℃, and make it to be cooled to 1 ℃ of ﹣ 5～﹣ in 0.5min, at 40 ℃, drying 20min, making described light diffusing agent.
Embodiment 4
The present embodiment provides the PP light diffusing agent of the high mist degree of a kind of high printing opacity, and its raw material comprises following component by weight:
45 parts of freezing Crushing of Ultrafine polysiloxane particles;
12 parts of light scattering agents;
26 parts of light scattering agents;
0.4 part of compatilizer;
Wherein, described light scattering agent 1 is diacetone-acryloamide(DAA); Described light scattering agent 2 is 1,8-octamethylenediamine; Described compatilizer comprises and accounts for the dodecyl benzyl dimethyl ammonium chloride of its gross weight 10% and the phthalic ester of surplus; The polysiloxane particle that it is 2 μ m that described freezing Crushing of Ultrafine polysiloxane particle refers to median size is cooled to after-19 ℃, the polysiloxane particle obtaining with the ultrasonic grinding of 64KHz.
The present embodiment provides a kind of method of preparing above-mentioned light diffusing agent simultaneously, comprise following operation: polysiloxane particle is cooled to-19 ℃, keep after 3min, the ultrasonic wave that proportion is 64KHz is pulverized 19min, makes described freezing Crushing of Ultrafine polysiloxane particle;
After described light scattering agent 1 and compatilizer are mixed, add described freezing Crushing of Ultrafine polysiloxane particle, adopt rotary shaking table with the rotating speed concussion 33min of 250 turn/min; Add described light scattering agent 2 to make the two and be uniformly mixed 17min at 59 ℃, and make it to be cooled to 2 ℃ of ﹣ in 0.6min, at 32 ℃, drying 22min, making described light diffusing agent.
Embodiment 5
The present embodiment provides a kind of light diffusion PP material, and its raw material comprises following component by weight:
38 parts of PP;
10 parts of light diffusing agents;
4 parts of toughner;
0.4 part of UV light absorber.
The light diffusing agent of wherein said light diffusing agent for providing in embodiment 1.
Described toughner is polyolefin elastomer class toughner; Described UV light absorber is ultraviolet absorbent UV-531.
Adopt ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 1:
The performance test results of table 1 embodiment 5
| Character | Method | Unit | Data |
| Proportion | ASTMD792 | — | 1.18 |
| Mould shrinks | ASTMD955 | % | 0.8-1.2 |
| Unit elongation | ASTMD638 | % | 8 |
| Tensile strength | ASTMD638 | Mpa | 48 |
| Flexural strength | ASTMD790 | Mpa | 52 |
| Bending modulus | ASTMD790 | Mpa | 2000 |
| Notched Izod impact strength (1/8 ") | ASTMD256 | J/M | 75 |
| Heat-drawn wire | ASTMD648 | ℃ | 150 |
| Flame resistivity | UL94 | (1/8") | HB |
| Drying temperature | — | ℃ | 90 |
| Time of drying | — | HR | 4 |
| Melt temperature | — | ℃ | 190-230 |
| Suggestion mould temperature | — | ℃ | 50 |
Embodiment 6
The present embodiment provides a kind of light diffusion PP material, and its raw material comprises following component by weight:
30 parts of PP;
15 parts of light diffusing agents;
1 part of toughner;
0.5 part of UV light absorber.
The light diffusing agent of wherein said light diffusing agent for providing in embodiment 2.
Described toughner is polyolefin elastomer class toughner; Described UV light absorber is ultraviolet absorbent UV-531.
Adopt ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 1:
The performance test results of table 2 embodiment 6
| Character | Method | Unit | Data |
| Proportion | ASTMD792 | — | 1.18 |
| Mould shrinks | ASTMD955 | % | 0.8-1.2 |
| Unit elongation | ASTMD638 | % | 8 |
| Tensile strength | ASTMD638 | Mpa | 51 |
| Flexural strength | ASTMD790 | Mpa | 60 |
| Bending modulus | ASTMD790 | Mpa | 2300 |
| Notched Izod impact strength (1/8 ") | ASTMD256 | J/M | 80 |
| Heat-drawn wire | ASTMD648 | ℃ | 150 |
| Flame resistivity | UL94 | (1/8") | HB |
| Drying temperature | — | ℃ | 90 |
| Time of drying | — | HR | 4 |
| Melt temperature | — | ℃ | 190-230 |
| Suggestion mould temperature | — | ℃ | 50 |
Embodiment 7
The present embodiment provides a kind of light diffusion PP material, and its raw material comprises following component by weight:
40 parts of PP;
5 parts of light diffusing agents;
5 parts of toughner;
0.2 part of UV light absorber.
The light diffusing agent of wherein said light diffusing agent for providing in embodiment 3.
Described toughner is polyolefin elastomer class toughner; Described UV light absorber is ultraviolet absorbent UV-531.
Adopt ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 1:
The performance test results of table 3 embodiment 7
| Character | Method | Unit | Data |
| Proportion | ASTMD792 | — | 1.18 |
| Mould shrinks | ASTMD955 | % | 0.8-1.2 |
| Unit elongation | ASTMD638 | % | 8 |
| Tensile strength | ASTMD638 | Mpa | 61 |
| Flexural strength | ASTMD790 | Mpa | 55 |
| Bending modulus | ASTMD790 | Mpa | 2500 |
| Notched Izod impact strength (1/8 ") | ASTMD256 | J/M | 80 |
| Heat-drawn wire | ASTMD648 | ℃ | 150 |
| Flame resistivity | UL94 | (1/8") | HB |
| Drying temperature | — | ℃ | 90 |
| Time of drying | — | HR | 4 |
| Melt temperature | — | ℃ | 190-230 |
| Suggestion mould temperature | — | ℃ | 50 |
Comparative example 1
This comparative example provides a kind of light diffusion PP, and its raw material comprises by weight
38 parts of PP;
10 parts of light diffusing agents;
4 parts of toughner;
0.4 part of UV light absorber.
Above-mentioned light diffusing agent is commercially available polysiloxane particle.All the other conditions are all consistent with embodiment 5.
Adopt ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 1:
The performance test results of table 4 comparative example 1
| Character | Method | Unit | Data |
| Proportion | ASTMD792 | — | 1.18 |
| Mould shrinks | ASTMD955 | % | 0.8-1.2 |
| Unit elongation | ASTMD638 | % | 8 |
| Tensile strength | ASTMD638 | Mpa | 30 |
| Flexural strength | ASTMD790 | Mpa | 45 |
| Bending modulus | ASTMD790 | Mpa | 1700 |
| Notched Izod impact strength (1/8 ") | ASTMD256 | J/M | 75 |
| Heat-drawn wire | ASTMD648 | ℃ | 150 |
| Flame resistivity | UL94 | (1/8") | HB |
| Drying temperature | — | ℃ | 90 |
| Time of drying | — | HR | 4 |
| Melt temperature | — | ℃ | 190-230 |
| Suggestion mould temperature | — | ℃ | 50 |
Comparative example 2
This comparative example provides a kind of light diffusion PP, and its raw material comprises by weight
38 parts of PP;
10 parts of light diffusing agents;
4 parts of toughner;
0.4 part of UV light absorber.
Above-mentioned light diffusing agent is the freezing Crushing of Ultrafine polysiloxane particle in embodiment 1.All the other conditions are all consistent with embodiment 5.
Comparative example 3
This comparative example provides a kind of light diffusion PP, and its raw material comprises by weight
38 parts of PP;
10 parts of light diffusing agents;
4 parts of toughner;
0.4 part of UV light absorber.
Above-mentioned light diffusing agent is freezing Crushing of Ultrafine polysiloxane particle and the diacetone-acryloamide(DAA) mixture of making in embodiment 1.All the other conditions are all consistent with embodiment 5.
Adopt mist degree, the transmittance of GB/T 2410-2008 couples of embodiment 5-7, comparative example 1-3 to test, its result is as shown in table 5.
Table 5
| Numbering | Mist degree/% | Transmittance/% | Transmittance/% (xenon lamp aging case was processed after 3000 hours) |
| Embodiment 5(1mm) | 94.2 | 88.5 | 88.5 |
| Embodiment 5(2mm) | 94.5 | 88.4 | 88.4 |
| Embodiment 6(1mm) | 93.3 | 89.9 | 89.9 |
| Embodiment 6(2mm) | 93.5 | 89.8 | 89.8 |
| Embodiment 7(1mm) | 91.5 | 91.1 | 91.1 |
| Embodiment 7(2mm) | 92.8 | 90.0 | 90.0 |
| Comparative example 1(1mm) | 82.4 | 83.5 | 81.1 |
| Comparative example 1(2mm) | 82.5 | 83.1 | 82.4 |
| Comparative example 2(1mm) | 94.8 | 78.5 | 77.4 |
| Comparative example 2(2mm) | 95.0 | 77.2 | 77.2 |
| Comparative example 3(1mm) | 93.3 | 89.1 | 81.6 |
| Comparative example 3(2mm) | 94.1 | 88.1 | 81.4 |
The test of incident beam refraction angle
Get the LED light source of Radius 1cm, thereunder apart from the PP plate of material of 2cm place parallel placement thickness homogeneous, in the PP plate of material that the light vertical irradiation that makes LED light source is h at thickness, measure the spot radius r that PMMA plate of material bottom forms.Try to achieve refraction angle: arctan[(r-1)/h].
Refraction angle to the mist degree of embodiment 5-7, comparative example 1-3 is tested, and its result is as shown in table 7.
| Numbering | Refraction angle/° |
| Embodiment 5(1mm) | 44.3 |
| Embodiment 5(2mm) | 44.7 |
| Embodiment 6(1mm) | 43.1 |
| Embodiment 6(2mm) | 44.6 |
| Embodiment 7(1mm) | 44.3 |
| Embodiment 7(2mm) | 44.3 |
| Comparative example 1(1mm) | 27.6 |
| Comparative example 1(2mm) | 30.5 |
| Comparative example 2(1mm) | 33.5 |
| Comparative example 2(2mm) | 34.8 |
| Comparative example 3(1mm) | 35.9 |
| Comparative example 3(2mm) | 35.9 |
The property the held test of freezing Crushing of Ultrafine polysiloxane particle gap.
Polysiloxane particle is dried after 5 hours at 40 ℃, weighs, obtain its mass M 1; Polysiloxane particle is soaked in deionized water to 5 hours, after draining away the water, weighs, obtain its mass M 2; Try to achieve it and hold Coefficient m=(M2-M1)/M1.
Adopt aforesaid method to test the freezing Crushing of Ultrafine polysiloxane particle of embodiment 1～3 and 2 commercially available μ m polysilane particles, its result is as shown in table 8.
| Numbering | Hold coefficient |
| Embodiment 1 | 0.81 |
| Embodiment 2 | 0.85 |
| Embodiment 3 | 0.78 |
| 2 commercially available μ m polysilane particles | 0.01 |
Be more than wherein specific implementation of the present invention, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these apparent replacement forms all belong to protection scope of the present invention.
Claims (5)
1. a PP light diffusing agent for the high mist degree of high printing opacity, its raw material comprises following component by weight:
40～70 parts of freezing Crushing of Ultrafine polysiloxane particles;
1 1～5 parts of light scattering agents;
2 5～10 parts of light scattering agents;
0.1～1 part of compatilizer;
Wherein, described light scattering agent 1 is diacetone-acryloamide(DAA); Described light scattering agent 2 is 1,8-octamethylenediamine; Described compatilizer comprises and accounts for the dodecyl benzyl dimethyl ammonium chloride of its gross weight 5～15% and the phthalic ester of surplus; The polysiloxane particle that it is 2 μ m that described freezing Crushing of Ultrafine polysiloxane particle refers to median size is cooled to after-10 ℃～-20 ℃, the polysiloxane particle obtaining with the ultrasonic grinding of 60～100KHz.
2. a method of preparing light diffusing agent described in claim 1, comprise following operation: polysiloxane particle is cooled to-10 ℃～-20 ℃, keep after 2min～5min, proportion is that the ultrasonic wave of 60～100KHz is pulverized 15min～20min, makes described freezing Crushing of Ultrafine polysiloxane particle;
After described light scattering agent 1 and compatilizer are mixed, add described freezing Crushing of Ultrafine polysiloxane particle, adopt rotary shaking table with rotating speed concussion 30～40min of 200～400 turn/min; Add described light scattering agent 2 to make the two and be uniformly mixed 15～30min at 50～60 ℃, and make it to be cooled to 1 ℃ of ﹣ 5～﹣ in 0.5～1min, at 30～40 ℃, drying 20～30min, making described light diffusing agent.
3. a light diffusion PP material, is characterized in that: its raw material packet contains light diffusing agent as claimed in claim 1.
4. light as claimed in claim 3 spreads PP material, it is characterized in that: its raw material comprises following component by weight:
30～40 parts of PP;
5～15 parts of light diffusing agents;
1～5 part of toughner;
0.2～0.5 part of UV light absorber.
5. light diffusion PP material according to claim 4, is characterized in that: described toughner is polyolefin elastomer class toughner; Described UV light absorber is ultraviolet absorbent UV-531.
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| CN104896422A (en) * | 2015-06-12 | 2015-09-09 | 李兆圻 | Lampshade of LED color-matching lamp tube and LED color-matching lamp tube |
| CN105419099A (en) * | 2015-12-24 | 2016-03-23 | 常州普莱克红梅色母料有限公司 | Polypropylene high-effect photo-diffusing master batch and preparation method thereof |
| CN108350223A (en) * | 2015-11-02 | 2018-07-31 | Sabic环球技术有限责任公司 | Light diffusing articles |
| CN109553858A (en) * | 2018-12-06 | 2019-04-02 | 重庆颖锋兴瑞光电科技有限公司 | A kind of PP diffuser plate |
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| CN103012966A (en) * | 2012-12-06 | 2013-04-03 | 上海日之升新技术发展有限公司 | Photodiffusion modified polypropylene material and preparation method thereof |
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| CN104896422A (en) * | 2015-06-12 | 2015-09-09 | 李兆圻 | Lampshade of LED color-matching lamp tube and LED color-matching lamp tube |
| CN108350223A (en) * | 2015-11-02 | 2018-07-31 | Sabic环球技术有限责任公司 | Light diffusing articles |
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