ABS containing phosphogypsum modified with a novel silane coupling agent containing hindered phenol and a preparation method thereof

A technology of silane coupling agent and hindered phenol, which is applied in the field of modified ABS and its preparation, can solve the problem of not being able to suppress the breakage of polyene molecular chains, the difficulty of dispersing antioxidants and inorganic fillers, and the problems of antioxidants and inorganic fillers. Fillers are difficult to mix evenly, so as to reduce the surface energy, avoid uneven dispersion and reduce the process

Inactive Publication Date: 2018-09-25
GUIZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when inorganic fillers are added to ABS, the antioxidant, inorganic fillers, and polymer matrix form a multiphase system, and the dispersion of antioxidants and inorganic fillers is difficult to solve, which affects the performance of polymers.
At the same time, in the ABS processing process, it is usually necessary to modify the inorganic filler with various modifiers first, and then add antioxidants during the processing to prevent the oxidation of the polymer during processing and use. Therefore, filler modification and Adding antioxidant is an independent process. It is difficult to mix the antioxidant and inorganic filler evenly, and the oxidative fracture of ABS around the filler is often the most serious. Therefore, adding antioxidant sometimes cannot well inhibit the polyene molecules around the filler. chain break

Method used

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  • ABS containing phosphogypsum modified with a novel silane coupling agent containing hindered phenol and a preparation method thereof
  • ABS containing phosphogypsum modified with a novel silane coupling agent containing hindered phenol and a preparation method thereof
  • ABS containing phosphogypsum modified with a novel silane coupling agent containing hindered phenol and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Benzyl chloride hindered phenol The preparation method is the same as CN104744813A.

[0022] (2) Synthesis of a new type of silane coupling agent for hindered phenol: in N 2 Under protection, add 10 parts of the above synthetic benzyl chloride hindered phenol, 5 parts of dimethyl sulfoxide, and 10 parts of diethylaminomethyl triethoxy into a 250mL three-necked flask equipped with mechanical stirring, condenser and thermometer. Silane Raise the oil temperature to 80℃, react for 10-48h, wash with 20 parts of petroleum ether, vacuum dry at 30℃ for 12h to obtain the hindered phenol new silane coupling agent, fractionate and recover the solvent, label it as hindered phenol new silane coupling agent 1

[0023] Infrared analysis of the synthesized hindered phenol new silane coupling agent (FT-IR, figure 1 ) And thermogravimetry (TG, figure 2 )analysis. Correct figure 1 Conduct analysis by figure 1 The curves a and b show that the wave number is 2980cm -1 The peaks on the l...

Embodiment 2

[0030] The difference between this example and Example 1 is that in the synthesis step (1) of the hindered phenol novel silane coupling agent 1, the temperature is changed to 90°C, the reaction time is 8h, and the diethylaminomethyltriethoxysilane is changed to 12 parts, 10 parts of solvent, 40 parts of petroleum ether. The vacuum drying temperature is 25°C, and the drying time is 14h; (2) The processing ingredients are changed to 30 parts by mass of phosphogypsum by adding 0.25 parts of a hindered phenol new silane coupling agent, and the modification process is 70°C high-speed stirring for 20 minutes.

[0031] See Table 1 for resistance to thermal oxidative aging. It can be seen from Table 1 that ABS with 0.25 parts of hindered phenol new silane coupling agent modified phosphogypsum has a slight increase in melt index after different times of extrusion, but there is little change, indicating that the molecular chain of ABS is slightly different. Fracture, but will not affect i...

Embodiment 3

[0034] The difference between this implementation and Example 1 is that in the synthesis step (1) of the hindered phenol novel silane coupling agent 1, the temperature is changed to 100°C, the reaction time is 12h, and the amount of diethylaminomethyltriethoxysilane is 15 parts. , The solvent is changed to 20 parts of toluene and 50 parts of petroleum ether. The vacuum drying temperature is 45℃ and the drying time is 10h; (2) The processing ingredients are changed to 30 parts by mass of phosphogypsum by adding 0.1 part of hindered phenol new silane coupling agent 1, and the modification process is 80℃ and high-speed stirring for 25 minutes .

[0035] See Table 1 for resistance to thermal oxidative aging. It can be seen from Table 1 that after adding 0.1 part of hindered phenol new silane coupling agent 1 modified phosphogypsum, the melt index of ABS increased slightly after being extruded for different times, but the change was not large, indicating that the molecular chain of A...

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Abstract

The invention discloses acrylonitrile-butadiene-styrene (ABS) containing phosphogypsum modified with a novel silane coupling agent containing hindered phenol. The ABS is characterized in that 0.1-1 part by mass of the novel silane coupling agent having a hindered phenol structure is added into 30-40 parts by mass of phosphogypsum, the mixture is stirred at a high speed at 60-80 DEG C for 20-30 min, then 100 parts of ABS is added into the mixture, and the mixture is stirred for another 30 min and is extruded by a twin-screw extruder to obtain the ABS containing phosphogypsum modified with the novel silane coupling agent containing hindered phenol.

Description

Technical field [0001] The invention relates to a modified ABS and a preparation method thereof, in particular to a new silane coupling agent-modified phosphogypsum ABS containing hindered phenol and a preparation method thereof. Background technique [0002] ABS plastic is a terpolymer of three monomers of acrylonitrile (A), butadiene (B) and styrene (S). The relative content of the three monomers can be changed at will to make various resins. ABS has the common properties of three components. A makes it resistant to chemical corrosion, heat resistance, and has a certain surface hardness, B makes it have high elasticity and toughness, and S makes it have the processing and molding characteristics of thermoplastics and improve electrical properties . ABS plastic is a kind of "tough, hard and rigid" material with easy-to-obtain raw materials, good comprehensive performance, low price and wide range of uses. ABS, as a common injection moldable thermoplastic, can be used to make L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08K9/06C08K3/30C07F7/18
CPCC08K9/06C07F7/1892C08K3/30C08K2003/3045C08L55/02
Inventor 尹晓刚陈卓龚维吴小云尹书琴付海班大明田琴
Owner GUIZHOU NORMAL UNIVERSITY
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