CN109942970A

CN109942970A - A kind of fire-retardant PS composite material

Info

Publication number: CN109942970A
Application number: CN201811387251.4A
Authority: CN
Inventors: 任静儿
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-19
Filing date: 2018-11-19
Publication date: 2019-06-28

Abstract

The present invention relates to a kind of fire-retardant PS composite materials, are made of the component of following parts by weight: PS is 50 parts -80 parts；Organic siliconresin is 3 parts -5 parts；Modified paligorskite is 20 parts -30 parts；Fire retardant is 20 parts -30 parts；Synergistic flame retardant is 6 parts -12 parts；Antioxidant is 0.1 part -0.5 part；Lubricant is 0.1 part -0.3 part.Natural palygorskite specific surface area is small, and the technical program is modified it by HCI, H⁺Instead of Mg⁺, Si-O-Mg-O-Si becomes two Si-O-H keys, and inner passage is connected to, and specific surface area is increased, and palygorskite can be made to be better dispersed in PS matrix；Meanwhile Cetyltrimethylammonium bromide can be reacted with the hydroxyl on palygorskite, and organic matter is grafted to palygorskite surface, improves the consistency problem between palygorskite and PS, this also improves the physical property of PS composite material indirectly.

Description

A kind of fire-retardant PS composite material

Technical field

The invention belongs to technical field of polymer materials, particularly relate to a kind of fire-retardant PS composite material.

Background technique

Polystyrene (PS) is widely used in various electric appliances, automobile, medical treatment etc. as a kind of common engineering plastics On the material in field, but since it is inflammable and burning velocity is fast, so fire-retardant problem is always to limit PS composite material to be applied to One factor in other fields.

It is organically-modified to palygorskite, obtain organically-modified palygorskite；Improve the fire-retardant of PS with fire retardant, modified paligorskite again Good mechanical properties are finally made in performance and physical property, and the PS composite material of excellent fireproof performance, this material is so far not yet See report.

Summary of the invention

The object of the present invention is to provide a kind of fire-retardant PS composite materials, to improve the physical property of PS composite material.

The present invention is achieved by the following technical solutions:

A kind of fire-retardant PS composite material, is made of the component of following parts by weight:

The preparation method of the modified paligorskite, comprising the following steps:

1) 6-10h is reacted in heating in 80-100 DEG C of oil bath after mixing hydrochloric acid and palygorskite, and gained is precipitated and is filtered, Drying obtains product A；The ratio of the amount of the substance of hydrochloric acid and the palygorskite is 6-12: 3-7；

2) reaction is heated in 60-80 DEG C of oil bath after weighing a certain amount of A and Cetyltrimethylammonium bromide mixing Products therefrom is centrifuged and filters by 8-14h, and drying both obtains modified paligorskite；

The ratio of the amount of the substance of the A and the Cetyltrimethylammonium bromide in step 2) is 20-28:8-15.

The fire retardant is ammonium polyphosphate.

The synergistic flame retardant is melamine.

The antioxidant is three (2,4- di-t-butyl) phenyl-phosphites, four [β-(3,5- di-tert-butyl-hydroxy phenyl) Propionic acid] pentaerythritol ester or 1,3,5- trimethyls -2,4, one of 6- (3,5- di-t-butyl -4- hydroxyphenylmethyl) benzene or several The mixing of kind.

The lubricant is one of zinc stearate, calcium stearate or potassium stearate or a variety of.

The preparation method of fire-retardant PS composite material described in any of the above embodiments, comprising the following steps:

1) 50 parts -80 parts of PS, 3 parts -5 parts of organic siliconresin, 20 parts -30 parts of modified paligorskite, 20 part -30 are weighed Part APP, 6 parts -12 parts of melamine, 0.1 part of -0.5 part of antioxidant, 0.1 part of -0.3 part of mix lubricant and stir evenly, Obtain mixture；

2) by mixture extruding pelletization obtained in step 1) to get arrive PS composite material.

Preferably, the step 2) specifically:

Mixture obtained in step 1) is put into extruding pelletization in the hopper of double screw extruder, wherein described double Screw extruder includes six humidity provinces sequentially arranged, 160~180 DEG C of area's temperature, two 180~220 DEG C of area's temperature, 3rd area 180~220 DEG C of temperature, four 180~220 DEG C of area's temperature, five 180~220 DEG C of area's temperature, six 180~220 DEG C of area's temperature, head 180~220 DEG C of temperature；180~260r/min of screw speed.

The beneficial effects of the present invention are:

Natural palygorskite specific surface area is small, and the technical program is modified it by HCl, H⁺Instead of Mg⁺, Si-O- Mg-O-Si becomes two Si-O-H keys, and inner passage is connected to, and specific surface area is increased, and palygorskite can be made preferably to divide It is dispersed in PS matrix, the physical property of PS composite material can be promoted.

Cetyltrimethylammonium bromide can be reacted with the hydroxyl on palygorskite, and organic matter is grafted to palygorskite table The consistency problem between palygorskite and PS is improved in face, this also improves the physical property of PS composite material indirectly.

Polymer molecular chain is inserted in the palygorskite spacing to organise, limits the Large Amplitude Motion of strand, is improved The thermal stability of composite material, also has certain barrier action to air, improves the flame retardant property of PS composite material.

Specific embodiment

Carry out the technical solution that the present invention will be described in detail by the following examples, embodiment below is merely exemplary, only It can be used to explanation and illustration technical solution of the present invention, and be not to be construed as the limitation to technical solution of the present invention.

Embodiment 1

(1) 50 parts of PS, 3 parts of organic siliconresins, 20 parts of modified paligorskites, 20 parts of APP, 6 parts of melamines, 0.1 part are weighed Irganox168,0.1 part of calcium stearate are mixed and stirred for uniformly, obtaining mixture；

(2) by mixture extruding pelletization obtained in step (1) to get arrive PS composite material P1.

Wherein each area's temperature of double screw extruder and screw speed are respectively as follows: 160 DEG C of area's temperature, two 180 DEG C of area's temperature, Three 180 DEG C of area's temperature, four 180 DEG C of area's temperature, five 180 DEG C of area's temperature, six 180 DEG C of area's temperature, 180 DEG C of head temperature；Screw rod turns Fast 180r/min.

Embodiment 2

(1) 80 parts of PS, 5 parts of organic siliconresins, 30 parts of modified paligorskites, 30 parts of APP, 12 parts of melamines, 0.1 part are weighed Irganox168,0.2 part of Irganox1010,0.2 part of Irganox1330,0.1 part of calcium stearate, 0.2 part of zinc stearate mixing And stir evenly, obtain mixture；

(2) by mixture extruding pelletization obtained in step (1) to get arrive PS composite material P2.

Wherein each area's temperature of double screw extruder and screw speed are respectively as follows: 180 DEG C of area's temperature, two 220 DEG C of area's temperature, Three 220 DEG C of area's temperature, four 220 DEG C of area's temperature, five 220 DEG C of area's temperature, six 220 DEG C of area's temperature, 220 DEG C of head temperature；Screw rod turns Fast 260r/min.

Embodiment 3

(1) 65 parts of PS, 4 parts of organic siliconresins, 25 parts of modified paligorskites, 25 parts of APP, 9 parts of melamines, 0.1 part are weighed Irganox168,0.2 part of Irganox1010,0.1 part of potassium stearate, 0.1 part of zinc stearate are mixed and stirred for uniformly, being mixed Close material；

(2) by mixture extruding pelletization obtained in step (1) to get arrive PS composite material P3.

Wherein each area's temperature of double screw extruder and screw speed are respectively as follows: 170 DEG C of area's temperature, two 200 DEG C of area's temperature, Three 200 DEG C of area's temperature, four 200 DEG C of area's temperature, five 200 DEG C of area's temperature, six 200 DEG C of area's temperature, 200 DEG C of head temperature；Screw rod turns Fast 220r/min.

The above is only the descriptions of the preferred embodiment of the present invention, it is noted that due to the finiteness of literal expression, and Objectively there is unlimited specific structure, for those skilled in the art, is not departing from the principle of the invention Under the premise of, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.

Claims

1. a kind of fire-retardant PS composite material, which is characterized in that be made of the component of following parts by weight:

2. fire-retardant PS composite material according to claim 1, which is characterized in that the preparation method of the modified paligorskite, The following steps are included:

1) 6-10h is reacted in heating in 80-100 DEG C of oil bath after mixing hydrochloric acid and palygorskite, and gained is precipitated and is filtered, drying Obtain product A；The ratio of the amount of the substance of hydrochloric acid and the palygorskite is 6-12: 3-7；

2) reaction 8- is heated in 60-80 DEG C of oil bath after weighing a certain amount of A and Cetyltrimethylammonium bromide mixing Products therefrom is centrifuged and filters by 14h, and drying both obtains modified paligorskite；

The ratio of the amount of the substance of the A and the Cetyltrimethylammonium bromide in step 2) is 20-28: 8-15.

3. fire-retardant PS composite material according to claim 1, which is characterized in that the fire retardant is ammonium polyphosphate.

4. fire-retardant PS composite material according to claim 1, which is characterized in that the synergistic flame retardant is melamine.

5. fire-retardant PS composite material according to claim 1, which is characterized in that the antioxidant is three (2,4- bis- tertiary fourths Base) phenyl-phosphite, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters or 1,3,5- trimethyl -2, The mixing of one or more of 4,6- (3,5- di-t-butyl -4- hydroxyphenylmethyl) benzene.

6. fire-retardant PS composite material according to claim 1, which is characterized in that the lubricant is zinc stearate, tristearin One of sour calcium or potassium stearate are a variety of.