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Weather-proof and low temperature-resistant organosilicone impact modifier as well as preparation method and application thereof

An impact modifier and low-temperature resistant technology, which is applied in the field of plastic additives, can solve problems such as poor impact resistance, thermal stability and weather resistance degradation, and limited application, and achieve the effect of improving impact resistance

Active Publication Date: 2017-06-20
铨盛聚碳科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although these impact modifiers increase the impact strength of polycarbonate resins, the use of such impact modifiers further leads to problems
For example, butadiene rubber-based impact modifiers commonly used in polycarbonate resins tend to degrade or burn during the molding process above 300°C, which leads to deterioration of thermal stability and weather resistance, so the application restricted
In the case of acrylate rubber-based impact modifiers, can provide good thermal stability and weatherability, but poor colorability and impact resistance at low temperatures

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A weather-resistant and low-temperature resistant silicone impact modifier, the weather-resistant and low-temperature resistant silicone impact modifier includes an inner core layer, a graft layer and an outer shell layer from the inside to the outside, and the inner core layer is composed of organosiloxane The body is polymerized, the graft layer is polymerized from soft monomers with low glass transition temperature, and the shell layer is polymerized from hard monomers with high glass transition temperature.

[0053] The organosiloxane monomer is a mixture of cyclic siloxane monomer, multifunctional group siloxane monomer and vinyl siloxane monomer in a weight ratio of 20:0.1:0.5.

[0054] The cyclic siloxane monomer is hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane or trihydrotrisiloxane Methylcyclotrisiloxane;

[0055] The multifunctional siloxane monomer is methyltrimethoxysilane, methyltrieth...

Embodiment 2

[0072] A weather-resistant and low-temperature resistant silicone impact modifier, the weather-resistant and low-temperature resistant silicone impact modifier includes an inner core layer, a graft layer and an outer shell layer from the inside to the outside, and the inner core layer is composed of organosiloxane The body is polymerized, the graft layer is polymerized from soft monomers with low glass transition temperature, and the shell layer is polymerized from hard monomers with high glass transition temperature.

[0073] The organosiloxane monomer is a mixture of cyclic siloxane monomers, multifunctional group siloxane monomers and vinyl siloxane monomers in a weight ratio of 30:0.3:0.8.

[0074] The cyclic siloxane monomer is trimethyltriphenylcyclotrisiloxane, trimethyltrivinylcyclotrisiloxane, trivinyltriphenylcyclotrisiloxane or tetrahydrotetramethyl Cyclotetrasiloxane;

[0075] The multifunctional siloxane monomer is ethyltrimethoxysilane, ethyltriethoxysilane, vin...

Embodiment 3

[0092] A weather-resistant and low-temperature resistant silicone impact modifier, the weather-resistant and low-temperature resistant silicone impact modifier includes an inner core layer, a graft layer and an outer shell layer from the inside to the outside, and the inner core layer is composed of organosiloxane The body is polymerized, the graft layer is polymerized from soft monomers with low glass transition temperature, and the shell layer is polymerized from hard monomers with high glass transition temperature.

[0093] The organosiloxane monomer is a mixture of cyclic siloxane monomer, multifunctional group siloxane monomer and vinyl siloxane monomer in a weight ratio of 40:0.5:1.

[0094] The cyclic siloxane monomer is tetramethyltetraphenylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane, tetravinyltetraphenylcyclotetrasiloxane or octaphenyl ring Tetrasiloxane;

[0095] Described multifunctional siloxane monomer is tetraethoxysilane, 1,3-bis[2-(dimethoxym...

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PUM

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Abstract

The invention relates to the technical field of plastic additives, in particular to a weather-proof and low temperature-resistant organosilicone impact modifier as well as a preparation method and application thereof. The weather-proof and low temperature-resistant organosilicone impact modifier comprises an inner core layer, a grafting layer and a shell layer from inside to outside, wherein the inner core layer is formed by polymerizing organo-siloxane monomers, the grafting layer is formed by polymerizing soft monomers with low glass transition temperature, and the shell layer is formed by polymerizing hard monomers with high glass transition temperature. The weather-proof and low temperature-resistant organosilicone impact modifier is excellent in weather fastness, high in low temperature resistance, good in impact resisting effect, and excellent in impact resistance under low temperature.

Description

technical field [0001] The invention relates to the technical field of plastic additives, in particular to a weather-resistant and low-temperature-resistant silicone impact modifier and a preparation method and application thereof. Background technique [0002] Polycarbonate resins have been used as engineering plastics due to their superior impact strength, self-extinguishing properties, dimensional stability and heat resistance compared to other resins, and have been widely used in office automation equipment, electrical products or electronic products and other fields. [0003] However, polycarbonate resins have poor fluidity due to their high melting point, so that the resins require higher processing temperatures. Such a higher processing temperature causes a problem that the resulting molded article has deterioration in impact resistance. Therefore, polycarbonate resins are mixed with various impact modifiers to improve impact resistance. [0004] Although these imp...

Claims

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Application Information

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IPC IPC(8): C08G77/20C08F283/12C08F285/00C08F220/18C08F220/06C08F212/08C08F212/12C08F220/56C08F220/44C08F220/58C08L69/00C08L51/00
CPCC08F283/124C08F285/00C08G77/20C08L69/00C08L51/00C08F220/1812C08F222/102C08F220/1808C08F220/1804C08F220/58C08F220/18
Inventor 王启瑶冯猛
Owner 铨盛聚碳科技股份有限公司
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