JPS62227638A - Manufacture of implanted automobile interior material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a flocked automobile interior material, and particularly to a method for producing a flocked automobile interior material in which foam 1 is served.

(Prior Art) For automobile interior materials such as front pillars, garnishes, and center pillars, injection molded or vacuum molded materials such as ABS% PP are widely used.

The high-end specs are made of ABS, PPK flocking, fabric wrapping with urethane pads, and other secondary processing.
The former is often adopted due to its cost advantage.

(Problem to be solved by the invention) The pile of the trim, which is flocked to ABS and PP using adhesive, is made of nylon material, and the fleece is directly flocked to the resin surface, so it has a soft appearance. is hard to the touch.

For this reason, there is a need to add a soft feel to the flocked hair in terms of design.

(Means for Solving the Problems) In order to solve the above problems, the present inventors have thoroughly investigated a method of intervening foam noise between the surface of a synthetic resin or metal interior material and the flocking, and as a result, the present inventors have published this book. invention has been achieved.

That is, the present invention is a foam r characterized in that electrostatic flocking is performed while the flexible polyurethane foam obtained by spraying a foamable composition comprising a polyol, an organic polyisocyanate, and other auxiliary agents onto a substrate has adhesive properties. - Ik of the hair transplant product with It is a construction method.

For example, Japanese Patent Application Laid-Open No. 57-1987
The stock solution for soft, highly elastic sprayed polyurethane foam described in No. 22 is used. The foamable composition starts foaming as soon as it is sprayed onto the substrate, and loses its fluidity in a short period of time. The foamable composition also acts as a pile adhesive. It is therefore necessary to spray the pile while the foaming composition is tacky, ie before the tack-free time is reached. Once the foam is cured, the pile is adhesively secured to the foam. Since the foamable composition is a two-component type, it can be easily atomized during spraying, the two components have good compatibility, the sprayed solution does not drip, and the sprayed surface remains flat. It is necessary to finish it. In addition, from the viewpoint of flocking work, it is better to have a longer adhesive time, but if this time is longer, the increase in viscosity of the foaming composition will be delayed, and the sprayed liquid will tend to drip. Therefore, the tack-free time of the foamable composition is 60~
90 seconds is preferred.

According to the method of the present invention, the urethane foam contacts the substrate and the pile while it is in the process of foaming and has sufficient adhesiveness. Therefore, a major feature is that the substrate and the urethane foam are bonded together much more strongly than when ordinary adhesives are used. Another advantage of the present invention is that it is possible to implant hair on interior parts with complex shapes. The pile used in the present invention is made with a long fiber cutter such as rayon, nylon, vinylon, polyester, acrylic, or vinylidene chloride.
It can be used by cutting it into lengths of 5 to 20 m, or by crushing cotton waste, hair waste, etc. These piles can be used as they are, but they can also be immersed in solutions such as inorganic salts to improve their flying properties, and they can be treated with a silane coupling agent to increase the adhesive strength to 7-ohm urethane. You can also do it.

The polyols used in the present invention include water, ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, dipropylene glycol, trimethylene glycol, 1,3- and 1,4-7' tanediol, and 1.5-bentanediol. , 1.2-hexylene glycol, 1.10-decanediol, 1.2-cyclohexanediol, glycerin, 1.2.6-hexandriol, 1.1.1-)limethylolpropane,
1.1.1-) Polyhydroxy compounds such as limethylolethane, pentaerythritol, turbitol, and sucrose; Phosphoric acid, phosphoric acid derivatives such as polyphosphate; ethylenediamine, diethylenetriamine, triethylenetetramine, diphenylmethanediamine, tolylene diamine Polyamines such as amines; alkanolamines such as triethanolamine and jetanol 9! AK is a polyether polyol obtained by addition polymerizing one or more of ethylene oxide, propylene oxide, styrene oxide, etc. Polytetramethylene glycol 971/tri-11 can also be used, including ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, propanediol, butanediol, neopentyl glycol, glycerin,
One or more compounds having at least two hydroxyl groups, such as trimethylolpropane, and one or two polycarboxylic acids, such as malonic acid, maleic acid, adipic acid, sebacic acid, phthalic acid, and terephthalic acid. Ring-opened polymers of cyclic esters such as polyester polyols and polycaprolactone can also be used.

Furthermore, polymer polyols obtained by graft polymerizing ethylenically unsaturated compounds such as acrylonitrile and styrene in these polyether polyols or polyester polyols can be used, and polybutadiene polyols can also be used.

The various polyols mentioned above may be used alone or in combination. Among these polyols, the polyols particularly used in the present invention are polyether polyols and polymer polyols. The suitable hydroxyl value is 28-60, and the content of @primary hydroxyl group is 60-60.
80 mol% is preferred.

A crosslinking agent may be used in the present invention if necessary. Examples of crosslinking agents include polyhydric alcohols such as ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol, dipropylene glycol, furopanediol, butanediol; triethanolamine;
Ethylene oxide, propylene oxide, etc. are added to these active hydrogen compounds; This compound has a hydroxyl value of 200 KOH/'9 or more. Other human loxyl value 20 oi19K obtained by adding ethylene oxide, propylene oxide, etc. to hydroquinone, resorcinol, ryoniline, etc.
Compounds with OH/9 or higher can also be used. The appropriate amount of the crosslinking agent to be used is 1 to 10 weight parts per 100 weight parts of the polyol.

The organic polyisocyanate used in the present invention is, for example, 2
．． 4-) lylene diisocyanate, 2,6-lylene diisocyanate, 80/20 of both (TDI-8
0) or a mixture in a 65/35 (TDI-65) weight ratio, crude tolylene diisocyanate, diphenylmethane diisocyanate, polymethylene polyphenyl polyisocyanate, also referred to as crude MDI, and dimers thereof,
These include trimers, carbodiimide-modified products, and prepolymers.

These organic polyisocyanates may be used alone or in combination of two or more. The amount used is that the equivalent ratio (NCO/H) between NC01 in the organic polyisocyanate and active hydrogen contained in the polyol, crosslinking agent, etc. is 0.7 to 1.4n.
Use it as follows.

Catalysts used in the present invention include, for example, amine catalysts such as triethylamine, triisopropanolamine, tripropylamine, tributylamine, trioctylamine, hexadecyldimethylamine, N-methylmorpholine, N-ethylmorpholine, -octadecylmorpholine, monoethanolamine, jetanolamine, triethanolamine, N-methyljetanolamine, N,
N-dimethylethanolamine, diethylenetriamine, N, N, Nl, Nl-tetramethylethylenediamine, N, N, Nl, Nf-tetramethylpropylenediamino N.

N, Nl, Nl-tetramethylbutanediamine, N, N
,Nl.

N Hibiki-tetramethyl-1,3-butanediamine, N,N
.

Nl, Nl-tetramethylhexamethylenediamine,
Bis(2-(N,N-dimethylamino)ethyl]ether, N,N-dimethylbenzylamine, N,N-dimethylcyclohexylamine, N,N,Nl,N",N
-Azacyclic compounds such as pentamethyldiethylenetriamine, triethylenediamine, formates and other salts of triethylenediamine, oxyalkylene adducts of amino groups of primary and secondary amines, N,N-dialkylpiperazines, various N, N1.N”-) Realkylaminoalkylhexahydrotridine, Japanese Patent Publication No. 1987-435
17 β-Aminocarbonyl Catalyst, Japanese Patent Publication No. 142-1983
79 β-amino nitrile catalyst, etc.), organometallic urethanation catalysts (tin acetate, octyl tin, tin oleate, lauric chain saw, diptyl tin diacetate, diptyl tin dilaurate, dibutyl tin dichloride, lead octoate, naphthenic acid) (lead, +phthenic nickel, cobalt naphthenate, etc.)
etc. These catalysts are used alone or in combination, and the amount used is Q, 0001 to 10.
It is 0 copies.

The blowing agent in the present invention is a mixture of one or more of water, trichloromonofluoromethane, dichlorodifluoromethane, methylene chloride, trichlorotrioleoethane, dibromotetrafluoroethane, trichloroethane, pentane, n-hexane, and the like.

The foam stabilizer in the present invention is a conventionally known organosilicon surfactant, such as L-520 manufactured by Nippon Unicar Co., Ltd.
L-532, L-540, L-544, L-550, L
-355 (1, L-5305, L-3600, L-36
01, L-5305, L-5307, L-5309, L
-5710, L-5720, L-5740M%L-62
02, etc., and 5H-19 manufactured by Tone Silicone Co., Ltd.
0,5H-192,5H-194,5H-200,5R
X-253,5RX-274C%5F-2961.5F
-2962,5RX-280A%5FtX-294A, etc. F-114, F-12 manufactured by Shin-Etsu Silicone Co., Ltd.
1, F-122, F-220, F-230, F-258
, F-2608%F-317. F-341, F-601
, F-606, X-20-200,
It is TFA-4202nato.

The amount of these foam stabilizers to be used is 0.1 to 2 parts per 100 parts of the total of the compound with active hydrogen and the organic polyisocyanate.
It is 0 copies.

In the present invention, dyes, coloring agents, etc. can be included as necessary.

(Operations and Effects) According to the present invention, a foam layer can be formed on the debris of the pile and the substrate when flocking an automobile interior material having a surface with a complicated shape, giving it a soft feel when touched. , Does it feel like a luxury car without making any noise when you hit it? I can put it out.

(Example) Examples of the present invention will be described below.

Example 1 Polyether polyol 8 with a hydroxyl value of 55119 KOH/g obtained by addition polymerizing propylene oxide to glycerin and then addition polymerizing ethylene oxide.
0 parts by weight, 2.0 parts by weight of jetanolamine crosslinking agent, 2.2 parts by weight of water, 0.4 parts by weight of bis(dimethylaminoethyl)ether catalyst, 0.7 parts by weight of tetramethylhexamethylenediamine catalyst [tfltS, L-3601 foam stabilizer n,
The sit portion was mixed to form a resin solution.

Separately, crude 11MDI was used as an organic polyisocyanate.

Next, using a high-pressure blow foaming machine manufactured by Gasmer, a pressure of 50~
Spray painting was performed at 70/9/cd. Resin liquid and rough 11
jMDI and the like, and sprayed uniformly onto an ABS resin center pillar. 45 nylon piles with a length of 1fi
It was immediately sprayed onto this under AV static voltage. The expanded polyurethane foam cured within a few minutes. The surface of the resulting flocked hair had no irregularities, the pile was evenly adhered, it felt soft when pressed, and no shedding of the flocked hair was observed even after repeated friction tests.

Example 2 80 parts by weight of the polyether polyol used in Example 1, hydroxyl number 281119KOH/9 obtained by polymerizing acrylonitrile in the polyether polyol
Polymer polyol 203 parts by weight, jetanolamine crosslinking agent 2.0 fi 4 parts, water 2.3 parts by weight, bis(dimethylaminoethyl)ether catalyst 0.4 parts by weight, tetramethylhexamethylene diamine catalyst 0.7 m blue Department, L
0.5 parts by weight of -3601 foam stabilizer was mixed to prepare a resin liquid.

Separately, a mixture of equal amounts of diphenylmethane diisocyanate and crude MDI as an organic polyisocyanate? Using.

Next, using a Gasmar high pressure blow foaming machine, the pressure was 50 to 7.
I performed a blow-up kesa at 0Ic9Aj. Resin liquid and crude MD
I and I were mixed in equal proportions and sprayed uniformly onto a hard PVC board.

A 1 m long nylon pile was immediately spread over this under an electrostatic voltage of 45 AV. The expanded polyurethane foam cured within a few minutes. The surface of the resulting flocked hair is flat, the pile is evenly attached, and it feels soft when pressed, so it can be used repeatedly! @ Even when a rubbing test was performed, no pile was observed to fall off.

Example 3 In Example 2, 70 parts by weight of the polyether polyol of Example 1 was used, propylene oxide was added to ethylene glycol in place of the polymer polyol, and then ethylene oxide was further added and polymerized to obtain a hydroxyl value of 28. KO1 (/ri no polyether diol +1
The treatment was carried out in exactly the same manner as in Example 2, except that -30 parts were used.

The obtained flocked hair was uniform, had a flat surface, felt soft when pressed, and no pile was observed to fall off in the friction test.

Claims (1)

[Claims] Flocked hair having a foam layer characterized in that electrostatic flocking is performed while the flexible polyurethane foam obtained by spraying a foamable composition comprising a polyol, an organic polyisocyanate and other auxiliary agents onto a substrate has tackiness. Manufacturing method for automobile interior materials.