Preparation method of flame-retardant fabric

Abstract

The invention relates to the technical field of flame-retardant fabric preparation, in particular to a flame-retardant fabric preparation method, and relates to fabric flame-retardant performance testing equipment which comprises an equipment body and a clamping mechanism. The equipment body is composed of a box body, a box door and a visible window formed in the box door; a supporting plate is fixedly connected to the middles of the inner walls of the left side and the right side of the equipment body, a clamping mechanism is arranged on the front side wall of the supporting plate and comprises a supporting piece, and the supporting piece rotationally penetrates through the interior of the supporting plate and is composed of a rotating shaft and an L-shaped plate; the fabric is clamped and limited through the clamping mechanism, so that the fabric can be quickly fixed by paving and closing the fabric, and the stability in the subsequent testing process is kept; through cooperation of the first angle adjusting mechanism and the clamping mechanism, the angle of a fabric sample is adjusted, through the second angle adjusting mechanism, the angle of the ignition device is adjusted, and a vertical combustion test method experiment and a 45-degree combustion test method experiment can be conveniently carried out.

Description

Technical Field

[0001] The invention relates to the technical field of flame retardant fabric preparation, and in particular to a method for preparing flame retardant fabric. Background Art

[0002] Flame-retardant fabric is a kind of fabric that has been specially treated or made of special materials. It can slow down the burning speed when it comes into contact with a fire source, or even extinguish itself, thereby protecting the wearer from fire damage. Flame-retardant fabric can be divided into two categories: permanent flame-retardant fabric and post-finishing flame-retardant fabric. Post-finishing flame-retardant fabric refers to a layer of flame retardant coated on the fabric or a flame retardant film formed on the fabric surface through chemical reaction, giving the fabric flame retardant properties.

[0003] In the current post-finishing flame-retardant fabric preparation process, the following steps are usually included: the prepared fabric is impregnated, extruded and dried, cured, and post-treated, and finally the treated fabric is subjected to a flame retardant performance test to detect whether the fabric sample meets the predetermined flame retardant standard; the current fabric flame retardant performance test is usually tested by a test device, usually a fabric sample of a specified size is first clamped by a plate-shaped clamp, fixed with a clamp, and then placed in the test device for hanging, and then the ignition device is moved to the lower end of the fabric sample for ignition, and finally the fabric is taken out for measurement after the flame is extinguished; however, first the clamp needs to be clamped in the test device first, and then placed in the test device, the clamping steps are complicated, resulting in low clamping efficiency, and the suspended clamp and fabric sample are not stable during the test process, which will affect the test results; secondly, the equipment is not convenient for adjusting the angle of the clamp, fabric sample and ignition device, resulting in inconvenience for multi-angle testing, and the practicability of the equipment for multi-angle testing needs to be improved; finally, measuring the test results requires a certain waiting time, which is not convenient for quickly obtaining the damage range value after burning.

[0004] Therefore, in order to improve the clamping efficiency and the stability during the test and to improve the practicability of the equipment, the present invention provides a method for preparing a flame retardant fabric. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a method for preparing a flame retardant fabric, the preparation method comprising the following steps:

[0006] S1. Fabric preparation: Select natural fiber, synthetic fiber or their blended fabrics as the base material, pre-treat the fabric and remove impurities and grease on the surface.

[0007] S2. Fabric impregnation: Immerse the fabric pretreated in step S1 into the flame retardant solution, and control the impregnation time according to the thickness of the fabric and the concentration of the flame retardant.

[0008] S3, squeezing and drying: the fabric soaked in step S2 is subjected to an extruder to remove excess liquid, and then dried in a dryer.

[0009] S4, curing treatment: curing treatment is performed on the fabric after extrusion and drying in step S3 to improve the adhesion and stability of the flame retardant. After the curing treatment is completed, the fabric is naturally cooled to room temperature.

[0010] S5. Post-treatment: Soften and anti-wrinkle the fabrics that have been cured and naturally cooled in step S4, and test the flame retardant properties of the finished fabrics.

[0011] The process of preparing the flame-retardant fabric using the above-mentioned step S5 also specifically involves a fabric flame-retardant performance testing device, which includes: a device main body and a clamping mechanism, wherein the device main body is composed of a box body, a box door and a visual window opened on the box door, and a support plate is fixedly connected to the middle of the left and right inner walls of the device main body, and the front side wall of the support plate is provided with a clamping mechanism, and the clamping mechanism includes a support member, the support plate is internally rotated through the support member, and the support member is composed of a rotating shaft and an L-shaped plate, the top wall of the support member is fixedly connected to a clamping seat one, and the left side wall of the clamping seat one is rotatably connected to a clamping seat two through a rotating shaft.

[0012] The rear side walls of the clamping seat 1 and the clamping seat 2 are both slidably connected to the clamping piece 1 through a No. 1 spring, and the front side walls of the clamping seat 1 and the clamping seat 2 are both slidably connected to the clamping piece 2 through a No. 2 spring. The clamping piece 1 and the clamping piece 2 are both composed of a cross bar and an adjustment block fixed to the side wall of the cross bar.

[0013] The inner bottom wall of the equipment body is provided with an angle adjustment mechanism 1 for adjusting the fabric test angle, and the angle adjustment mechanism 1 is provided with a height adjustment mechanism, the height adjustment mechanism is provided with an angle adjustment mechanism 2 for adjusting the flame source test angle, and the angle adjustment mechanism 2 is provided with an ignition device, and the clamping mechanism is provided with a measuring mechanism.

[0014] In one possible implementation, the adjustment block of clamp one consists of a block and two wedges fixed to the front wall of the block, and the adjustment block of clamp two consists of a block and a wedge fixed to the rear wall of the block, and the two wedges of the adjustment block of clamp one and the one wedge of the adjustment block of clamp two are alternately distributed.

[0015] In one possible implementation, the top wall of clamping seat one is fixedly connected with a positioning pin one, and clamping seat two is provided with a hole that matches the positioning pin one, the clamping member one on clamping seat two and the side wall of clamping member two are fixedly connected with a plurality of positioning pins two, and the clamping member one on clamping seat one and the top wall of clamping member two are provided with holes that match the positioning pins two.

[0016] In one possible implementation, a width adjustment member is slidably connected to both clamping seat one and clamping seat two, and the width adjustment member is composed of an extrusion block and a No. 1 positioning protrusion fixed to the side wall of the extrusion block, the extrusion block of the width adjustment member is arrow-shaped on one side close to clamping member one and clamping member two, and the arrow-shaped outer wall of the extrusion block of the width adjustment member is slidably connected to the top wall of the wedge block of clamping member one and clamping member two, and the clamping seat two, the clamping seat one and the corresponding No. 2 fixed protrusion of the width adjustment member are threadedly connected with bolts.

[0017] In one possible implementation, the angle adjustment mechanism includes an electric push rod, and the electric push rod is installed on the right inner wall of the equipment body, and the left output end of the electric push rod is fixedly connected to an L-shaped sliding seat, the bottom wall of the L-shaped sliding seat is slidably connected to the inner top wall of the equipment body, the middle part of the L-shaped sliding seat is fixedly connected to a balance plate, and the top wall of the L-shaped sliding seat is fixed with a rack, the top wall of the rack is meshed with a gear, and the rear side wall of the rack is slidably connected to the front side wall of the equipment body, and the front side wall of the gear is connected to the rear side wall of the shaft of the support member.

[0018] In one possible implementation, the height adjustment mechanism includes a cylinder seat, and the top wall of the L-shaped sliding seat is symmetrically fixed with the cylinder seat, the top wall of the cylinder seat is slidably connected to the height adjustment plate through a No. 3 spring, and the side walls adjacent to the two height adjustment plates are jointly fixed with a supporting member, and the supporting member is composed of a rectangular section and a semicircular plate symmetrically arranged on the top wall of the rectangular section, an arc groove is provided on the top wall of the rectangular section of the supporting member, the left bottom portion of the supporting member is inclined to the right, and the right bottom wall of the supporting member is horizontal, a trapezoidal member is fixedly connected to the left inner wall of the equipment body, and the right top wall of the trapezoidal member is inclined to the right, and the left top wall of the trapezoidal member is horizontal.

[0019] In one possible implementation, the second angle adjustment mechanism includes a rotating seat, which is slidably connected to the inside of the arc-shaped groove on the top wall of the rectangular section of the supporting member, and the rotating seat is composed of a cylindrical section facing front and back and a rectangular section fixed to the top wall of the cylindrical section, the ignition device is installed on the top wall of the rectangular section of the rotating seat, and the middle part of the rotating seat is rotatably connected to an adjustment shaft, and the adjustment shaft is fixedly connected to the front and rear side walls of the supporting member.

[0020] In one possible implementation, the right side wall of the adjustment shaft is fixedly connected to a traction plate, and the traction plate is slidably connected to the right inner wall of the equipment body, the right inner wall of the equipment body is provided with a slot that matches the traction plate, the right side wall of the adjustment shaft is rotatably connected to an angle adjustment plate 1, and the right side wall of the rotating seat is provided with a slot that matches the angle adjustment plate 1, and the angle adjustment plate 1 and the traction plate are connected via a reset spring.

[0021] In one possible implementation, a motor is installed on the rear inner wall of the device body, and an angle adjustment plate 2 is fixed to the front output end of the motor. The angle adjustment plate 2 is composed of an arc plate and a square bar fixed on the top wall of the arc plate, and a positioning key is fixed to the right side wall of the square bar of the angle adjustment plate 2, and a positioning hole matching the positioning key is opened on the left side wall of the rectangular section of the rotating seat.

[0022] In one possible implementation, the measuring mechanism includes an operating rod, and the operating rod is slidably connected to the box door of the equipment body, the clamping piece 1 and the clamping piece 2 on the clamping seat 2 are slidably connected to a measuring ruler, and a positioning block compatible with the operating rod is fixed to the top wall of the measuring ruler, the clamping piece 1, the clamping piece 2 on the clamping seat 2 and the top wall of the measuring ruler are all provided with scale lines, and the right side wall of the measuring ruler is symmetrically fitted with limit keys front and back, and the limit keys are slidably connected to the clamping piece 1 and the clamping piece 2 on the clamping seat 2 up and down through a No. 4 spring.

[0023] Beneficial effects:

[0024] 1. Place the fabric sample horizontally on the clamping seat 1 and the clamping piece 1 and the top wall of the clamping piece 2 on the clamping seat 1, flip the clamping seat 2 close to the clamping seat 1, clamp and limit the fabric through the clamping mechanism, and it can be quickly fixed by laying and closing, so as to maintain stability in the subsequent testing process; and before clamping fabric samples of different sizes specified by different test standards, adjust the width adjustment piece to slide on the clamping seat 1 and the clamping seat 2, so as to adjust the distance between the clamping piece 1 and the clamping piece 2, so as to facilitate the adjustment of the clamping size.

[0025] 2. Through the cooperation of the angle adjustment mechanism 1 and the clamping mechanism, the output end of the electric push rod moves to the left and drives, and the rack and the gear cooperate to rotate the clamped fabric sample, so as to adjust the angle of the fabric sample, which is convenient for vertical combustion test method experiments and forty-five degree combustion test method experiments; through the angle adjustment mechanism 2, the angle adjustment plate 1 rotates forty-five degrees close to the traction plate, driving the ignition device to rotate forty-five degrees, so as to realize the combustion test of the fabric sample inclined at forty-five degrees, which is convenient for the angle adjustment of the fabric sample ignition device when the equipment is conducting various combustion test experiments, and increases the practicality of the device.

[0026] 3. Through the cooperation of the angle adjustment mechanism, the clamping mechanism and the height adjustment mechanism, when the clamping mechanism drives the fabric sample to rotate from a horizontal state to a vertical state, the electric push rod drives the ignition device to move the position. When the ignition device is located directly below the fabric sample, a vertical combustion test method is performed; through the adjustment and cooperation of the supporting member and the trapezoidal member of the height adjustment mechanism, the height adjustment of the ignition device is achieved to adapt to the height required in the 45-degree combustion test method experiment.

[0027] 4. Through the cooperation of the measuring mechanism with the clamping parts one and two, the measuring ruler is moved by the operating rod to measure the damage range of the fabric sample after burning, and the measurement scale of the damage range after burning is directly read. It is safe, fast and intuitive, and it is easy to quickly obtain effective test information without manual contact, reducing the safety hazard of scalding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0029] Figure 1 It is a process flow chart of the present invention.

[0030] Figure 2 This is a schematic diagram of the external structure of the equipment body of a fabric flame retardant performance testing equipment proposed by the present invention.

[0031] Figure 3 This is a schematic diagram of the internal structure of the equipment body of a fabric flame retardant performance testing equipment proposed by the present invention.

[0032] Figure 4 This is a schematic diagram of the structure of the support plate, clamping mechanism and L-shaped sliding seat of a fabric flame retardant performance testing device proposed by the present invention.

[0033] Figure 5 for Figure 4 A schematic diagram of the structure from another perspective.

[0034] Figure 6 This is one of the partial structural schematic diagrams of the clamping mechanism of a fabric flame retardant performance testing device proposed by the present invention.

[0035] Figure 7 This is the second partial structural schematic diagram of the clamping mechanism of the fabric flame retardant performance testing equipment proposed by the present invention.

[0036] Figure 8 This is a schematic structural diagram of the first and second clamps of a fabric flame retardant performance testing device proposed by the present invention when they are adjusted.

[0037] Fig. 9 This is a structural schematic diagram of a height adjustment mechanism and an angle adjustment mechanism 2 of a fabric flame retardant performance testing device proposed by the present invention.

[0038] Fig.10 This is a schematic diagram of the exploded structure of a supporting member and a rotating seat of a fabric flame retardant performance testing device proposed by the present invention.

[0039] Fig.11 for Figure 3 Schematic diagram of the structure at A in the middle.

[0040] Fig.12 for Fig. 9 Schematic diagram of the structure at B in the figure.

[0041] In the figure: 1. Equipment body; 2. Support plate; 3. Clamping mechanism; 31. Support member; 32. Clamping seat 1; 33. Clamping seat 2; 34. Clamping member 1; 35. Clamping 2; 36. Positioning pin 1; 37. Positioning pin 2; 38. Width adjustment member; 39. Bolt; 4. Angle adjustment mechanism 1; 41. Electric push rod; 42. L-shaped sliding seat; 43. Balance plate; 44. Rack; 45. Gear; 5. Height adjustment mechanism; 51 , cylinder seat; 52, height adjustment plate; 53, supporting member; 54, trapezoidal member; 6, angle adjustment mechanism 2; 61, rotating seat; 62, adjusting shaft; 63, traction plate; 64, angle adjustment plate 1; 65, reset spring; 66, motor; 67, angle adjustment plate 2; 68, positioning key; 69, positioning hole; 7, ignition device; 8, measuring mechanism; 81, operating lever; 82, positioning block; 83, measuring ruler; 84, limit key. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0043] See also Figures 1 to 4 , a method for preparing a flame retardant fabric, the preparation method comprising the following steps:

[0044] S1. Fabric preparation: Select natural fiber, synthetic fiber or their blended fabrics as the base material, pre-treat the fabric and remove impurities and grease on the surface.

[0045] S2. Fabric impregnation: Immerse the fabric pretreated in step S1 into the flame retardant solution, and control the impregnation time according to the thickness of the fabric and the concentration of the flame retardant.

[0046] S3, squeezing and drying: the fabric soaked in step S2 is subjected to an extruder to remove excess liquid, and then dried in a dryer.

[0047] S4, curing treatment: curing treatment is performed on the fabric after extrusion and drying in step S3 to improve the adhesion and stability of the flame retardant. After the curing treatment is completed, the fabric is naturally cooled to room temperature.

[0048] S5. Post-treatment: Soften and anti-wrinkle the fabrics that have been cured and naturally cooled in step S4, and test the flame retardant properties of the finished fabrics.

[0049] The process of preparing the flame-retardant fabric using the above-mentioned step S5 also specifically involves a fabric flame-retardant performance testing device, which includes: a device main body 1 and a clamping mechanism 3, the device main body 1 is composed of a box body, a box door and a visual window opened on the box door, a support plate 2 is fixedly connected to the middle of the left and right inner walls of the device main body 1, and the front side wall of the support plate 2 is provided with a clamping mechanism 3, and the inner bottom wall of the device main body 1 is provided with an angle adjustment mechanism 1 4 for adjusting the fabric test angle, and the angle adjustment mechanism 1 4 is provided with a height adjustment mechanism 5, and the height adjustment mechanism 5 is provided with an angle adjustment mechanism 2 6 for adjusting the flame source test angle, and the angle adjustment mechanism 2 6 is provided with an ignition device 7, the ignition device 7 is a prior art, and its specific structure and working principle are not described here, and the clamping mechanism 3 is provided with a measuring mechanism 8.

[0050] First, the flame retardant performance test of the fabric is carried out inside the equipment body 1. During the test, observation is made through the visual window of the equipment body 1. The fabric sample of the specified size is cut according to the test standard requirements, and the box door of the equipment body 1 is opened. The support plate 2 plays a supporting role for the clamping mechanism 3. The fabric sample is clamped and limited by adjusting the clamping mechanism 3 to maintain stability during the test; the clamped fabric sample is rotated and adjusted by adjusting the angle adjustment mechanism 1 4; the height of the ignition device 7 is adjusted by adjusting the height adjustment mechanism 5; the angle of the ignition device 7 is adjusted by adjusting the angle adjustment mechanism 2 6; this facilitates the vertical combustion test method experiment and the forty-five-degree combustion test method experiment, and increases the practicality of the equipment; the damage range of the fabric sample after combustion is measured by the measuring mechanism 8.

[0051] See also Figure 3 , Figure 4 and Figure 6 The clamping mechanism 3 includes a support member 31, and the support member 31 is rotated inside the support plate 2. The support member 31 is composed of a rotating shaft (not shown in the figure) and an L-shaped plate. The top wall of the support member 31 is fixedly connected to a clamping seat 1 32, and the left side wall of the clamping seat 1 32 is rotatably connected to a clamping seat 2 33 through a rotating shaft.

[0052] See also Figure 7 and Figure 8The rear side walls of clamping seat 1 32 and clamping seat 2 33 are slidably connected with clamping piece 1 34 through spring No. 1 (not shown in the figure), and the front side walls of clamping seat 1 32 and clamping seat 2 33 are slidably connected with clamping piece 2 35 through spring No. 2 (not shown in the figure). Clamping piece 1 34 and clamping piece 2 35 are both composed of adjustment blocks fixed by a cross bar and the side walls of the cross bar; the adjustment block of clamping piece 1 34 is composed of two wedge blocks fixed by a square and the front wall of the square, and the adjustment block of clamping piece 2 35 is composed of a wedge block fixed by a square and the rear wall of the square, and the two wedge blocks of the adjustment block of clamping piece 1 34 and one wedge block of the adjustment block of clamping piece 2 35 are alternately distributed.

[0053] See also Figure 6 The top wall of the clamping seat 1 32 is fixedly connected with a positioning pin 1 36, and the clamping seat 2 33 is provided with a hole that is compatible with the positioning pin 1 36. The side walls of the clamping piece 1 34 and the clamping piece 2 35 on the clamping seat 2 33 are fixedly connected with a plurality of positioning pins 2 37, and the top walls of the clamping piece 1 34 and the clamping piece 2 35 on the clamping seat 1 32 are provided with holes that are compatible with the positioning pins 2 37.

[0054] See also Figure 7 and Figure 8 A width adjusting piece 38 is slidably connected to both the clamping seat 1 32 and the clamping seat 2 33. The width adjusting piece 38 consists of an extrusion block and a No. 1 positioning protrusion fixed to the side wall of the extrusion block. The extrusion block of the width adjusting piece 38 is arrow-shaped on one side close to the clamping piece 1 34 and the clamping piece 2 35. The arrow-shaped outer wall of the extrusion block of the width adjusting piece 38 is slidably connected to the top wall of the wedge block of the clamping piece 1 34 and the clamping piece 2 35. The clamping seat 2 33, the clamping seat 1 32 and the corresponding No. 2 fixed protrusion of the width adjusting piece 38 are threadedly connected with a bolt 39.

[0055] See also Figures 3 to 5 The angle adjustment mechanism 4 includes an electric push rod 41, which is installed on the right inner wall of the equipment body 1, and the left output end of the electric push rod 41 is fixedly connected with an L-shaped sliding seat 42, the bottom wall of the L-shaped sliding seat 42 is slidably connected to the inner top wall of the equipment body 1, and the middle part of the L-shaped sliding seat 42 is fixedly connected with a balance plate 43, and the top wall of the L-shaped sliding seat 42 is fixed with a rack 44, and the top wall of the rack 44 is meshed with a gear 45, and the rear side wall of the rack 44 is slidably connected to the front side wall of the equipment body 1, and the front side wall of the gear 45 is connected to the rear side wall of the shaft of the support member 31.

[0056] Place the fabric sample horizontally on the clamping seat 1 32 and the clamping piece 1 34 and the top wall of the clamping piece 2 35 on the clamping seat 1 32, rotate the clamping seat 2 33 close to the clamping seat 1 32, the positioning pin 1 36 pierces the fabric sample and engages into the corresponding hole position of the clamping seat 2 33, the positioning pin 2 37 pierces the fabric sample and engages into the corresponding hole position of the clamping piece 1 34 and the top wall of the clamping piece 2 35, the clamping seat 2 33 corresponds to the clamping seat 1 32, the clamping piece 1 34 and the clamping piece 2 35 above the clamping seat 2 33 correspond to the clamping piece 1 34 and the clamping piece 2 35 on the clamping seat 1 32, clamp and limit the fabric, and it can be quickly fixed by laying and closing it to maintain stability in the subsequent testing process.

[0057] Before clamping fabric samples of different sizes specified by different test standards, the width adjusting member 38 is adjusted to slide on the clamping seat 1 32 and the clamping seat 2 33 by screwing the bolt 39, and the width adjusting member 38 is adjusted to move upward to release the squeezing of the wedge blocks of the clamping member 1 34 and the clamping member 2 35. The clamping member 1 34 and the clamping member 2 35 approach each other as the No. 1 spring and the No. 2 spring rebound. The width adjusting member 38 is adjusted to move downward to squeeze the wedge blocks of the clamping member 1 34 and the clamping member 2 35, and the clamping member 1 34 and the clamping member 2 35 move away from each other, thereby realizing the adjustment of the distance between the clamping member 1 34 and the clamping member 2 35, which is convenient for adjusting the clamping size and increasing the practicality of the device.

[0058] The output end of the electric push rod 41 moves to the left to drive the L-shaped sliding seat 42 to slide to the left on the inner bottom wall of the equipment body 1, driving the rack 44 to move to the left. The movement of the rack 44 drives the gear 45 to rotate, and the gear 45 drives the support 31 and the clamped fabric sample to rotate, thereby adjusting the angle of the fabric sample to facilitate the vertical combustion test method experiment and the forty-five-degree combustion test method experiment.

[0059] See also Figures 9 and 10 The height adjustment mechanism 5 includes a cylinder seat 51, and the cylinder seat 51 is symmetrically fixed to the top wall of the L-shaped sliding seat 42. The top wall of the cylinder seat 51 is slidably connected to the height adjustment plate 52 through a No. 3 spring (not shown in the figure). The side walls of the two height adjustment plates 52 that are close to each other are commonly fixed with a supporting member 53. The supporting member 53 consists of a rectangular section and a semicircular plate with symmetry on the top wall of the rectangular section. An arc groove is provided on the top wall of the rectangular section of the supporting member 53. The left bottom portion of the supporting member 53 is inclined to the right, and the right bottom wall of the supporting member 53 is horizontal. A trapezoidal member 54 is fixedly connected to the left inner wall of the equipment body 1. The right top wall of the trapezoidal member 54 is inclined to the right, and the left top wall of the trapezoidal member 54 is horizontal.

[0060] See also Figures 9 and 10The angle adjustment mechanism 2 6 includes a rotating seat 61, and the rotating seat 61 is slidably connected inside the arc groove of the top wall of the rectangular section of the supporting member 53. The rotating seat 61 is composed of a cylindrical section facing front and back and a rectangular section fixed on the top wall of the cylindrical section. The ignition device 7 is installed on the top wall of the rectangular section of the rotating seat 61. The middle part of the rotating seat 61 is rotatably connected with an adjustment shaft 62, and the adjustment shaft 62 is fixedly connected to the front and rear side walls of the supporting member 53.

[0061] See also Fig.10 The right side wall of the adjusting shaft 62 is fixedly connected with a traction plate 63, and the traction plate 63 is slidably connected to the right inner wall of the equipment body 1. The right inner wall of the equipment body 1 is provided with a slot adapted to the traction plate 63. The right side wall of the adjusting shaft 62 is rotatably connected with an angle adjustment plate 64. The right side wall of the rotating seat 61 is provided with a slot adapted to the angle adjustment plate 64. The angle adjustment plate 64 and the traction plate 63 are connected by a reset spring 65.

[0062] See also Fig. 9 and Fig.11 A motor 66 is installed on the rear inner wall of the equipment body 1, and an angle adjustment plate 67 is fixed to the front output end of the motor 66. The angle adjustment plate 67 is composed of an arc plate and a square bar fixed on the top wall of the arc plate. A positioning key 68 is fixed to the right side wall of the square bar of the angle adjustment plate 67, and a positioning hole 69 compatible with the positioning key 68 is opened on the left side wall of the rectangular section of the rotating seat 61.

[0063] The L-shaped sliding seat 42 drives the height adjustment mechanism 5, the rotating seat 61 and the ignition device 7 to move. When the L-shaped sliding seat 42 drives the rotating seat 61 and the ignition device 7 to move to the middle of the equipment body 1, the clamping mechanism 3 drives the fabric sample to rotate from a horizontal state to a vertical state. At this time, the ignition device 7 is located directly below the fabric sample, ignites the flame, and applies it to the lower edge of the sample. After removing the flame, the time required for the fabric sample to extinguish itself is recorded, so as to perform the vertical combustion test method.

[0064] If a 45-degree combustion test is to be conducted, the ignition device 7 is driven to move to the left by the L-shaped sliding seat 42 until it exceeds the middle of the equipment body 1. At this time, the bottom wall of the supporting member 53 gradually fits against the top wall of the trapezoidal member 54, and the height is adjusted as the top wall of the trapezoidal member 54 tilts. The height adjustment plate 52 slides upward on the top wall of the cylinder seat 51, and the No. 3 spring on the top wall of the cylinder seat 51 is stretched to adapt to the height adjustment of the supporting member 53, thereby realizing the height adjustment of the ignition device 7.

[0065] The L-shaped sliding seat 42 moves to push the rack 44 to move, and the gear 45 rotates to drive the clamping mechanism 3 to rotate to a vertical state and then continue to rotate to an inclined angle of forty-five degrees. At this time, the L-shaped sliding seat 42 pushes the supporting member 53 to move to the horizontal surface of the top wall of the trapezoidal member 54, and the height of the ignition device 7 no longer changes.

[0066] The arc plate of the angle adjustment plate 2 67 is close to the left arc-shaped side wall of the supporting member 53, and the positioning key 68 on the square strip of the angle adjustment plate 2 67 is engaged with the positioning hole 69 provided on the left side of the rotating seat 61. The motor 66 rotates clockwise to drive the angle adjustment plate 2 67 and the rotating seat 61. The rotating seat 61 rotates to drive the angle adjustment plate 1 64 to rotate around the adjustment shaft 62. The reset spring 65 is compressed, and the traction plate 63 plays a limiting role. The angle adjustment plate 1 64 rotates at an angle of forty-five degrees to approach the traction plate 63, driving the ignition device 7 to rotate at an angle of forty-five degrees, thereby realizing a combustion test on a fabric sample tilted at a forty-five degree angle.

[0067] See also Figure 2 and Fig.12 The measuring mechanism 8 includes an operating rod 81, the operating rod 81 is slidably connected to the box door of the equipment body 1, the clamping piece 1 34 and the clamping piece 2 35 on the clamping seat 2 33 are slidably connected to a measuring ruler 83, and a positioning block 82 adapted to the operating rod 81 is fixed to the top wall of the measuring ruler 83, and the clamping piece 1 34, the clamping piece 2 35 on the clamping seat 2 33 and the top wall of the measuring ruler 83 are all provided with scale lines, and the right side wall of the measuring ruler 83 is symmetrically fitted with a limit key 84, and the limit key 84 is slidably connected to the clamping piece 1 34 and the clamping piece 2 35 on the clamping seat 2 33 up and down through a No. 4 spring.

[0068] After the electric push rod 41 is reset and the fabric sample and the ignition device 7 are driven to reset, the damage range of the fabric sample after combustion is measured by the measuring mechanism 8, so as to quickly read the effective test information. The operating rod 81 is inserted from the outside of the box door of the equipment body 1 into the internal positioning block 82, and slides to the right, driving the measuring ruler 83 to push the limit key 84 to the right. The bottom wall of the measuring ruler 83 and the top wall of the limit key 84 are both chamfered. When the measuring ruler 83 is pushed to the right, the limit key 84 is pressed downward to release the obstruction to the measuring ruler 83, and the measuring ruler 83 slides to the right to the combustion position of the fabric sample. The measuring ruler 83 cooperates with the clamping piece 1 34 and the clamping piece 2 35 to directly read the measurement scale of the damage range after combustion, which is safe, fast and intuitive.

[0069] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a flame retardant fabric, characterized in that: A method for preparing a flame retardant fabric comprises the following steps: S1. Fabric preparation: Select natural fiber, synthetic fiber or their blended fabrics as the base material, pre-treat the fabric and remove impurities and grease on the surface; S2, fabric impregnation: immersing the fabric pretreated in step S1 into the flame retardant solution, and controlling the impregnation time according to the thickness of the fabric and the concentration of the flame retardant; S3, extrusion and drying: the fabric soaked in step S2 is subjected to an extruder to remove excess liquid, and then dried in a dryer; S4, curing treatment: curing treatment is performed on the fabric after extrusion and drying in step S3 to improve the adhesion and stability of the flame retardant. After the curing treatment is completed, the fabric is naturally cooled to room temperature; S5, post-processing: performing softening and anti-wrinkle finishing on the fabric cured and naturally cooled in step S4, and performing flame retardant performance test on the finished fabric; The process of preparing the flame-retardant fabric using the above step S5 also specifically involves a fabric flame-retardant performance testing device, which includes: The device body (1) and the clamping mechanism (3) are composed of a box body, a box door and a visual window provided on the box door, and a support plate (2) is fixedly connected to the middle of the left and right inner walls of the device body (1), and the front side wall of the support plate (2) is provided with the clamping mechanism (3), and the clamping mechanism (3) includes a support member (31), the support member (31) is rotatably penetrated inside the support plate (2), and the support member (31) is composed of a rotating shaft and an L-shaped plate, the top wall of the support member (31) is fixedly connected to a clamping seat 1 (32), and the left side wall of the clamping seat 1 (32) is rotatably connected to a clamping seat 2 (33) via a rotating shaft; The rear side walls of the clamping seat 1 (32) and the clamping seat 2 (33) are both slidably connected to the clamping piece 1 (34) through a No. 1 spring, and the front side walls of the clamping seat 1 (32) and the clamping seat 2 (33) are both slidably connected to the clamping piece 2 (35) through a No. 2 spring, and the clamping piece 1 (34) and the clamping piece 2 (35) are both composed of a cross bar and an adjustment block fixed to the side wall of the cross bar; The inner bottom wall of the device body (1) is provided with an angle adjustment mechanism (4) for adjusting the fabric test angle, and the angle adjustment mechanism (4) is provided with a height adjustment mechanism (5), and the height adjustment mechanism (5) is provided with an angle adjustment mechanism (6) for adjusting the flame source test angle, and the angle adjustment mechanism (6) is provided with an ignition device (7), and the clamping mechanism (3) is provided with a measuring mechanism (8).

2. The method for preparing a flame retardant fabric according to claim 1, characterized in that: The adjusting block of the clamping piece 1 (34) is composed of two wedge blocks fixed to the front wall of the block, and the adjusting block of the clamping piece 2 (35) is composed of a wedge block fixed to the rear wall of the block, and the two wedge blocks of the adjusting block of the clamping piece 1 (34) and the one wedge block of the adjusting block of the clamping piece 2 (35) are staggered.

3. The method for preparing a flame retardant fabric according to claim 1, characterized in that: The top wall of the clamping seat 1 (32) is fixedly connected with a positioning pin 1 (36), and the clamping seat 2 (33) is provided with a hole position matched with the positioning pin 1 (36). The side walls of the clamping piece 1 (34) and the clamping piece 2 (35) on the clamping seat 2 (33) are fixedly connected with a plurality of positioning pins 2 (37), and the top walls of the clamping piece 1 (34) and the clamping piece 2 (35) on the clamping seat 1 (32) are provided with holes matched with the positioning pins 2 (37).

4. The method for preparing a flame retardant fabric according to claim 1, characterized in that: The clamping seat 1 (32) and the clamping seat 2 (33) are both slidably connected with a width adjustment member (38), and the width adjustment member (38) is composed of an extrusion block and a No. 1 positioning protrusion fixed to the side wall of the extrusion block, the extrusion block of the width adjustment member (38) is arrow-shaped on one side close to the clamping member 1 (34) and the clamping member 2 (35), and the arrow-shaped outer wall of the extrusion block of the width adjustment member (38) is slidably connected to the top wall of the wedge block of the clamping member 1 (34) and the clamping member 2 (35), and the No. 2 fixed protrusion of the clamping seat 2 (33), the clamping seat 1 (32) and the corresponding width adjustment member (38) are commonly threadedly connected with a bolt (39).

5. The method for preparing a flame retardant fabric according to claim 1, characterized in that: The angle adjustment mechanism (4) comprises an electric push rod (41), and the right inner wall of the device body (1) is equipped with the electric push rod (41), and the left output end of the electric push rod (41) is fixedly connected to an L-shaped sliding seat (42), the bottom wall of the L-shaped sliding seat (42) is slidably connected to the inner top wall of the device body (1), the middle part of the L-shaped sliding seat (42) is fixedly connected to a balance plate (43), and the top wall of the L-shaped sliding seat (42) is fixedly connected to a rack (44), the top wall of the rack (44) is meshedly connected to a gear (45), and the rear side wall of the rack (44) is slidably connected to the front side wall of the device body (1), and the front side wall of the gear (45) is connected to the rear side wall of the shaft of the support member (31).

6. The method for preparing a flame retardant fabric according to claim 5, characterized in that: The height adjustment mechanism (5) comprises a cylinder seat (51), and the top wall of the L-shaped sliding seat (42) is symmetrically fixed with the cylinder seat (51), the top wall of the cylinder seat (51) is slidably connected with a height adjustment plate (52) through a No. 3 spring, and the adjacent side walls of the two height adjustment plates (52) are commonly fixed with a supporting member (53), and the supporting member (53) is composed of a rectangular section and a semicircular plate with symmetry on the top wall of the rectangular section, an arc groove is opened on the top wall of the rectangular section of the supporting member (53), the left bottom part of the supporting member (53) is inclined to the right, and the right bottom wall part of the supporting member (53) is horizontal, and the left inner wall of the equipment body (1) is fixedly connected with a trapezoidal member (54), and the right top wall part of the trapezoidal member (54) is inclined to the right, and the left top wall part of the trapezoidal member (54) is horizontal.

7. The method for preparing a flame retardant fabric according to claim 6, characterized in that: The angle adjustment mechanism 2 (6) comprises a rotating seat (61), the rotating seat (61) is slidably connected inside the arc-shaped groove of the top wall of the rectangular section of the supporting member (53), and the rotating seat (61) is composed of a cylindrical section facing forward and backward and a rectangular section fixed on the top wall of the cylindrical section, the ignition device (7) is installed on the top wall of the rectangular section of the rotating seat (61), and the middle part of the rotating seat (61) is rotatably connected with an adjustment shaft (62), and the adjustment shaft (62) is fixedly connected to the front and rear side walls of the supporting member (53).

8. The method for preparing a flame retardant fabric according to claim 7, characterized in that: The right side wall of the adjustment shaft (62) is fixedly connected with a traction plate (63), and the traction plate (63) is slidably connected to the right inner wall of the equipment body (1), and the right inner wall of the equipment body (1) is provided with a slot matched with the traction plate (63), the right side wall of the adjustment shaft (62) is rotatably connected with an angle adjustment plate (64), and the right side wall of the rotating seat (61) is provided with a slot matched with the angle adjustment plate (64), and the angle adjustment plate (64) and the traction plate (63) are connected via a return spring (65).

9. The method for preparing a flame retardant fabric according to claim 7, characterized in that: A motor (66) is installed on the rear inner wall of the device body (1), and an angle adjustment plate (67) is fixed to the front output end of the motor (66). The angle adjustment plate (67) is composed of an arc-shaped plate and a square bar fixed to the top wall of the arc-shaped plate, and a positioning key (68) is fixed to the right side wall of the square bar of the angle adjustment plate (67). A positioning hole (69) matching the positioning key (68) is opened on the left side wall of the rectangular section of the rotating seat (61).

10. The method for preparing a flame retardant fabric according to claim 1, characterized in that: The measuring mechanism (8) comprises an operating rod (81), and the operating rod (81) is slidably connected to the box door of the equipment body (1), the clamping piece (34) and the clamping piece (35) on the clamping seat (33) are slidably connected to a measuring ruler (83), and a positioning block (82) matched with the operating rod (81) is fixed on the top wall of the measuring ruler (83), the clamping piece (34) and the clamping piece (35) on the clamping seat (33) and the top wall of the measuring ruler (83) are all provided with scale lines, and the right side wall of the measuring ruler (83) is symmetrically fitted with a limit key (84) front and back, and the limit key (84) is slidably connected to the clamping piece (34) and the clamping piece (35) on the clamping seat (33) through a No. 4 spring.

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