Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of environment-friendly flame-retardant PVC/NBR foam material and preparation method thereof

A foaming material and an environmentally friendly technology, which is applied in the field of polymer materials and its preparation, can solve the problem that PVC/NBR foaming materials cannot meet the needs of engineering fire protection applications, produce a large amount of smoke and toxic and harmful gases, and calcium carbonate fillers do not have barrier properties. Combustibility and other issues, to meet the needs of engineering fire protection applications, uniform and stable cell size, good environmental protection and flame retardant performance

Active Publication Date: 2020-12-04
WINCELL INSULATION CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the flame retardant performance of PVC / NBR foam material is greatly reduced after adding a large amount of plasticizer, and at the same time, a large amount of smoke and toxic and harmful gases will be generated during the combustion process, calcium carbonate filler does not have flame retardant effect
Therefore, in specific occasions, PVC / NBR foam materials cannot meet the needs of engineering fire protection applications.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of environment-friendly flame-retardant PVC/NBR foam material and preparation method thereof
  • A kind of environment-friendly flame-retardant PVC/NBR foam material and preparation method thereof
  • A kind of environment-friendly flame-retardant PVC/NBR foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The preparation method of the above-mentioned environmentally friendly flame-retardant PVC / NBR foam material has the following steps:

[0026] (1) Preparation of environmentally friendly flame-retardant PVC / NBR foam material high-temperature glue:

[0027] According to the formula, NBR, compound halogen-free flame retardant, reinforcing agent, compound lubricant, anti-aging agent, plasticizer (accounting for 71% of the total amount of plasticizer), and PVC resin are sequentially added to the internal mixer. The rotor speed of the mixer is 50n / min. The material is mixed in the internal mixer, relying on its own friction to generate heat to 120°C, and then the material is discharged (the material is in a semi-molten state). The above-mentioned materials were mixed for 5 minutes with a double-roll mill, the roll torque was 4mm, and the material was cut three times through a thin pass, and cooled into sheets, and the two-roll mill was cooled by cooling water. Store for 48...

Embodiment 2～ Embodiment 6

[0032] The preparation method of the environment-friendly flame-retardant PVC / NBR foam material of each embodiment is the same as that of Example 1, the difference lies in the weight ratio of each component, see Table 1 for details.

[0033] Table 1: The formula ratio of embodiment 1~6

[0034]

[0035]

[0036] The environment-friendly flame-retardant PVC / NBR foam material that embodiment 1~embodiment 6 makes is prepared standard sample, and this standard sample is carried out flame-retardant property, mechanical property, density test according to national standard, and test result is shown in table 2.

[0037] Table 2: Example 1~6 group formula test results

[0038] test performance Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Tensile strength / MPa 0.88 0.90 0.78 0.83 0.79 0.92 Elongation at break / % 225 194 243 248 264 204 Density / g·cm -3

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an environment-friendly flame-retardant PVC / NBR foaming material and a preparation method thereof. The material consists of 100 parts of PVC resin (emulsion polymerization) / NBR compound, 4 to 12 parts of a composite foaming agent, and 0.3 to 10 parts of a crosslinking agent. 0.8 parts, composite accelerator 1.8-2.5 parts, composite halogen-free flame retardant 70-120 parts, plasticizer 25-40 parts, composite lubricant 2.0-4.0 parts, reinforcing agent 6-12 parts, anti-aging agent 0.3- 0.6 part composition. The environment-friendly flame-retardant PVC / NBR foam material of the present invention has low smoke density, non-toxicity and light specific gravity.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to an environment-friendly flame-retardant PVC / NBR foam material. Background technique [0002] The solubility parameters and polarity of polyvinyl chloride (PVC) and nitrile rubber (NBR) are similar, and the compatibility between the two is good. Using its blend as the matrix of the foaming material can make the foamed product have both rubber foaming properties. The elasticity of the product and the good stiffness and small shrinkage of plastic foam products, and PVC has good flame retardancy and weather resistance, which can improve the shortcomings of NBR inflammability and poor weather resistance. PVC / NBR blended material has excellent comprehensive properties. PVC / NBR foam materials have been widely used in air-conditioning insulation pipes, sporting goods, life-saving supplies, shock absorption, heat insulation, sound insulation and many other aspects. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L9/02C08L91/06C08L71/02C08K13/02C08K3/06C08K5/09C08K3/22C08K3/38C08K5/523C08K3/04C08J9/10
CPCC08J9/0023C08J9/0038C08J9/0061C08J9/0066C08J9/103C08J2203/04C08J2203/20C08J2309/02C08J2327/06C08J2471/02C08J2491/06C08K3/04C08K3/06C08K5/09C08K5/523C08K13/02C08K2003/2224C08K2003/387
Inventor 周健秦伯军
Owner WINCELL INSULATION CO LTD